WO2013150604A1 - Image display apparatus and abnormality notifying method - Google Patents

Image display apparatus and abnormality notifying method Download PDF

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Publication number
WO2013150604A1
WO2013150604A1 PCT/JP2012/059034 JP2012059034W WO2013150604A1 WO 2013150604 A1 WO2013150604 A1 WO 2013150604A1 JP 2012059034 W JP2012059034 W JP 2012059034W WO 2013150604 A1 WO2013150604 A1 WO 2013150604A1
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WO
WIPO (PCT)
Prior art keywords
light source
abnormality
error
control unit
image
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Application number
PCT/JP2012/059034
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French (fr)
Japanese (ja)
Inventor
山本　賢治
Original Assignee
Ｎｅｃディスプレイソリューションズ株式会社
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Priority to PCT/JP2012/059034 priority Critical patent/WO2013150604A1/en
Publication of WO2013150604A1 publication Critical patent/WO2013150604A1/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/04—Display protection
    • G09G2330/045—Protection against panel overheating
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source

Definitions

  • the present invention relates to an image display device capable of notifying abnormality.
  • Image display devices such as projectors and liquid crystal displays are usually provided with a cooling system such as an air cooling system that blows air using a fan or a water cooling system that circulates liquid using a pump so that the internal temperature does not become too high.
  • a cooling system such as an air cooling system that blows air using a fan or a water cooling system that circulates liquid using a pump so that the internal temperature does not become too high.
  • the cooling system generally adjusts the internal temperature of the image display device to a specified value or less. However, if an abnormality occurs in the light source or cooling system, the internal temperature is the specified value even if a cooling system is provided. May be exceeded. If the internal temperature exceeds the specified value, the image display device may be damaged. Therefore, when an abnormality is detected, the image display device has a power-down function that turns off the power and stops the operation. There is something.
  • the power down function has a problem that it is difficult for the user to confirm the cause of the operation stop of the image display device because the image display device does not operate unless the abnormality is resolved.
  • an abnormality notification method in which when an abnormality is detected, a display function for displaying an image is stopped and an abnormality notification light source such as an LED is turned on.
  • the user can be notified of the content of the abnormality by changing the color of the light source for abnormality notification, the number of blinks, etc. according to the content of the abnormality.
  • the user can respond to the color of the abnormality notification light source or the number of blinks using the instruction manual.
  • the trouble of investigating the contents of abnormalities is generated.
  • the image display device is away from the user, or when the abnormality notification light source is hidden behind a wall or other equipment, it is difficult for the user to visually recognize the abnormality notification light source. is there. For example, if the image display device is a projector and the projector is used while being suspended from the ceiling, the image display device is separated from the user, making it difficult to visually recognize the abnormality notification light source.
  • Patent Document 1 includes a plurality of fluorescent tubes as a backlight, and when any of the fluorescent tubes fails, only the failed fluorescent tube is turned off, and then a predetermined button is pressed. And a display device that uses other fluorescent tubes to display information that identifies the failed fluorescent tube and the date and time that the failure occurred.
  • the internal temperature may exceed the specified value.
  • the image display device is stopped using the power-down function, or the abnormality content is notified to the user using the abnormality notification light source.
  • the user cannot immediately grasp the content of the abnormality.
  • An object of the present invention is to provide an image display apparatus and an abnormality notification method that can allow a user to immediately grasp the contents of an abnormality while suppressing breakage.
  • An image display device detects a content of an abnormality when a failure occurs, and a display unit that displays an image indicated by an input video signal using light from each of the light sources. Based on the error control unit and the content of the abnormality, select one of the plurality of light sources, turn on the selected light source, and indicate an abnormality notification image that notifies the content of the abnormality as the video signal A display control unit for inputting a notification video signal to the display unit.
  • An abnormality notification method is an abnormality notification method by an image display device having a plurality of light sources and a display unit that displays an image indicated by an input video signal using light from each light source,
  • an abnormality occurs, the content of the abnormality is detected, one of the light sources is selected based on the content of the abnormality, the selected light source is turned on, and the content of the abnormality is used as the video signal.
  • An abnormality notification video signal indicating an abnormality notification image to notify is input to the display unit.
  • FIG. 1 is a block diagram illustrating a projector according to a first embodiment of the present invention. It is a figure which shows an example of an abnormality notification image. It is a flowchart for demonstrating an example of operation
  • FIG. 1 is a block diagram showing a projector according to a first embodiment of the present invention.
  • a projector 100 includes a light source unit 1, an image projection unit 2, a substrate error control unit 3, a cooling error control unit 4, a temperature error control unit 5, a light source error control unit 6, an image / light source. And a control unit 7.
  • the light source unit 1 has a plurality of light sources.
  • the light source unit 1 includes a light source 1R that emits red light, a light source 1G that emits green light, and a light source 1B that emits blue light.
  • the light sources 1R, 1G, and 1B are constituted by solid light sources such as LEDs (Light Emitting Diodes) and solid laser light sources, or high-pressure lamps, for example. Below, light source 1R, 1G, and 1B are demonstrated as a solid light source.
  • the image projection unit 2 is a display unit that displays an image indicated by an input video signal using each color light emitted from each of the light sources 1R, 1G, and 1B of the light source unit 1. For example, the image projection unit 2 modulates each color light according to the input video signal, synthesizes each modulated color light, and projects it on a screen (not shown), thereby displaying an image indicated by the video signal on the screen. Display above.
  • the substrate error control unit 3, the cooling error control unit 4, the temperature error control unit 5 and the light source error control unit 6 constitute an error control unit.
  • the error control unit detects whether or not an abnormality has occurred in the projector 100. When an abnormality occurs, the error control unit detects the content of the abnormality and generates an error code indicating the content of the abnormality.
  • the board error control unit 3 detects whether or not a board error that is an abnormality related to the control board (not shown) of the projector 100 has occurred.
  • Board errors include, for example, breakage of electronic components on the control board, disconnection of the cable connector for connecting multiple control boards, abnormality of the power supply voltage supplied to the control board, communication error due to the communication circuit on the control board Etc.
  • the board error control unit 3 determines the contents of the board error and generates a board code indicating the contents of the board error as an error code.
  • the board code indicates, for example, that the board error has occurred and the type of the board error (for example, damage to the electronic component, cable connector not connected, power supply voltage abnormality, communication error, etc.). Show.
  • the cooling error control unit 4 detects whether or not a cooling error that is an abnormality related to a cooling system (not shown) provided in the projector 100 has occurred.
  • the cooling system is a system that adjusts the internal temperature of the projector 100.
  • Examples of the cooling system include an air cooling system that blows air into the projector 100 using an air cooling fan, a water cooling system that circulates liquid in a pipe provided in the projector 100 using a water cooling pump, and a thermoelectric device such as a Peltier element.
  • the thermoelectric cooling system which adjusts internal temperature using an element is mentioned.
  • the cooling error is, for example, a rotation error in which the rotation speed of the air cooling fan or the water cooling pump is out of a predetermined rotation control range, or an element error in which the temperature of the thermoelectric element is out of a predetermined temperature control range.
  • the cooling error control unit 4 includes a temperature sensor provided in the vicinity of the thermoelectric element, and monitors the temperature detected by the temperature sensor as the temperature of the thermoelectric element. When the temperature of the element is out of the temperature control range, it is detected that an element error has occurred.
  • the cooling error control unit 4 determines the content of the cooling error and generates a cooling code indicating the content of the cooling error as an error code.
  • the cooling code indicates, as the content of the cooling error, for example, that a cooling error has occurred, and an air cooling fan or water cooling pump in which a cooling error has occurred, or a thermoelectric element in which an element error has occurred.
  • the temperature error control unit 5 detects whether or not a temperature error that is an abnormality related to the internal temperature of the projector 100 has occurred.
  • the temperature error is, for example, that the internal temperature of the projector 100 is out of a predetermined operating temperature range.
  • the cooling error control unit 4 includes a temperature sensor, monitors the temperature detected by the temperature sensor, and detects that a temperature error has occurred when the temperature is out of the operating temperature range.
  • the installation location where the temperature sensor is installed includes the inside of a ventilation path affected by the cooling system, and the vicinity of the light sources 1R, 1G, and 1B serving as heat generation sources.
  • the temperature sensor is installed at least near each of the light sources 1R, 1G, and 1B, and the cooling error control unit 4 is detected by the temperature sensor installed near each of the light sources 1R, 1G, and 1B. It is assumed that the detected temperature is monitored as the temperature of each light source 1R, 1G, and 1B.
  • the temperature sensor includes a temperature detection thermistor, bimetal, and IC (Integrated Circuit). Further, when the cooling error control unit 4 monitors the temperature of the thermoelectric element using the temperature sensor, an abnormality relating to the thermoelectric element is detected as a cooling error and is not included in the temperature error.
  • the temperature error control unit 5 detects the content of the temperature error and generates a temperature code indicating the content of the temperature error as an error code.
  • the temperature code indicates the content of the temperature error, for example, that a temperature error has occurred and the light source in which the temperature error has occurred.
  • the light source error control unit 6 detects whether or not a light source error related to the luminance of each of the light sources 1R, 1G, and 1B has occurred.
  • the light source error is, for example, that the brightness of each light source 1R, 1G, and 1B is out of a predetermined lighting control range when each light source 1R, 1G, and 1B is controlled to light.
  • the light source error control unit 6 is provided with a color sensor that measures luminance near each of the light sources 1R, 1G, and 1B, and monitors the luminance detected by the color sensor as the luminance of each light source 1R, 1G, and 1B. If at least one of the luminances is out of the lighting control range, it is detected that a light source error has occurred.
  • the light source error control unit 6 detects the content of the light source error and generates a light source code indicating the content of the light source error as an error code.
  • the light source code indicates, for example, that the light source error has occurred and the light source in which the light source error has occurred as the content of the light source error.
  • the light source code may further indicate the luminance of the light source in which the light source error has occurred as the content of the light source error.
  • the image / light source control unit 7 is a display control unit that controls the light source unit 1 and the image projection unit 2 to display an image.
  • the image / light source control unit 7 selects the light sources 1R, 1G. And 1B are turned on. Then, when a video signal is input, the image / light source control unit 7 outputs the input video signal to the image projection unit 2 so that the image indicated by the input video signal is displayed on the screen. Make the projection.
  • the image / light source control unit 7 temporarily turns off all of the light sources 1R, 1G, and 1B.
  • the image / light source control unit 7 selects one of the light sources 1R, 1G, and 1B based on the error code generated by the error control unit, and turns on the selected light source.
  • the image / light source control unit 7 checks, for each of the light sources 1R, 1G, and 1B, whether the content of the abnormality indicated by the error code satisfies a failure determination condition for determining that the light source is failed. Inspect whether the light source is broken or not. The image / light source control unit 7 determines that the light source has failed when the content of the abnormality satisfies the failure determination condition, and determines that the light source has not failed when the content of the abnormality does not satisfy the failure determination condition. judge.
  • the image / light source control unit 7 selects a light source determined not to have a failure.
  • the light source 1R is the highest, and is assumed to be lower in the order of 1G and 1B.
  • the failure determination condition is, for example, that at least one of a temperature error and a light source error has occurred in the light source.
  • the failure determination condition may include a condition in which even if a light source error has occurred in the light source, the light source is not determined to be defective when the luminance of the light source is higher than a predetermined luminance. In this case, if a temperature error has occurred in the light source, the image / light source control unit 7 determines that the failure determination condition is satisfied. If no temperature error occurs in the light source, the image / light source control unit 7 determines that the failure determination condition is satisfied when the light source error occurs and the luminance of the light source is less than the predetermined luminance. Thereby, when the luminance of the light source is too low, it is determined that the light source is out of order, and when the luminance of the light source is slightly deviated from the lighting control range, the light source is not determined as out of order.
  • the failure determination condition is set in advance in the image / light source control unit 7. Further, the failure determination condition is appropriately set according to the component specifications of the projector 100, particularly the component specifications of the light sources 1R, 1G, and 1B.
  • the image / light source control unit 7 When the selected light source is turned on, the image / light source control unit 7 inputs an abnormality notification video signal indicating an abnormality notification image for notifying the content of the abnormality to the image projection unit 2 as a video signal, and inputs it to the image projection unit 2. By displaying the abnormality notification image, the user is notified of the content of the abnormality.
  • the abnormality notification image 202 may include not only the content of the abnormality but also a solution to the abnormality and a contact information (such as a URL or an e-mail address) of the support center.
  • a large amount of data such as an abnormality solution or a support center contact may be represented by a two-dimensional barcode that can be read by a mobile phone or the like.
  • FIG. 2 is a diagram illustrating an example of an abnormality notification image indicated by the abnormality notification video signal.
  • the image / light source control unit 7 uses the OSD (On-Screen Display) function to superimpose the abnormality notification video signal on the input video signal and input it to the image projection unit 2, thereby causing the screen 200.
  • An abnormality notification image 202 is displayed in the upper projected image 201.
  • the abnormality notification image 202 indicates that an abnormality has occurred, “WARNIG error has occurred”, the content of the abnormality “ERROR_No [3] Temperature is abnormal”, and a method for contacting the support center “Contacting the support center... http: // www ... ".
  • the image / light source control unit 7 turns off all of the light sources 1R, 1G, and 1B when a predetermined time has elapsed since the abnormality notification video signal was input to the image projection unit 2.
  • FIG. 3 is a flowchart for explaining an operation related to an error detection process for detecting an abnormality by the projector 100.
  • the image / light source control unit 7 turns on an error detection processing flag for executing error detection processing (step S301).
  • the image / light source control unit 7 determines whether an error is detected by the error control unit (step S302).
  • the image / light source control unit 7 checks each part in the error control unit in a predetermined order, and determines whether a substrate error, a cooling error, a temperature error, and a light source error are detected. .
  • the image / light source control unit 7 checks the substrate error control unit 3, the cooling error control unit 4, the temperature error control unit 5, and the light source error control unit 6 in this order to check the substrate error, cooling error, temperature error, and light source. It is determined whether or not they are detected in the order of errors.
  • the image / light source control unit 7 may simultaneously check each unit of the error control unit instead of checking each unit of the error control unit in a predetermined order.
  • the image / light source control unit 7 determines that an abnormality has been detected, and all of the substrate error, the cooling error, the temperature error, and the light source error are detected. If not detected, the image / light source controller 7 determines that no abnormality has been detected.
  • the image / light source control unit 7 returns to the process of step S302.
  • the image / light source control unit 7 acquires an error code indicating the content of the abnormality from the error control unit (step S303). More specifically, the image / light source control unit 7 obtains an error code from the part in which the error is detected among the units of the error control unit.
  • the image / light source controller 7 stops all of the light sources 1R, 1G, and 1B (step S304).
  • the image / light source control unit 7 executes an error notification process for notifying the user of the error content based on the acquired error code (step S305), and ends the error detection process.
  • FIG. 4 is a flowchart for explaining the error notification process executed in step S305 in more detail.
  • the image / light source control unit 7 first checks whether or not the content of the abnormality indicated by the error code satisfies a failure determination condition for determining that the light source 1R is failed, and whether the light source 1R has failed. Is determined (step S401).
  • the image / light source control unit 7 checks whether or not the content of the abnormality indicated by the error code satisfies a failure determination condition for determining that the light source 1G is failed, and the light source 1G has failed. It is determined whether or not (step S402).
  • the image / light source control unit 7 checks whether or not the content of the abnormality indicated by the error code satisfies a failure determination condition for determining that the light source 1B is failed, and the light source 1B has failed. It is determined whether or not (step S403).
  • the image / light source control unit 7 ends the error notification process. If the projector 100 has a light source for abnormality notification such as an LED, the image / light source control unit 7 may notify the user of the content of the abnormality by turning on the light source for abnormality notification.
  • a light source for abnormality notification such as an LED
  • the image / light source control unit 7 selects the light source determined not to be abnormal, and turns on only the selected light source. (Step S404).
  • the image / light source control unit 7 turns on the selected light source with a predetermined luminance.
  • the predetermined luminance is desirably a minimum luminance at which the user can visually recognize the abnormality notification image or a luminance slightly higher than the minimum luminance. Since each of the light sources 1R, 1G, and 1B is formed of a solid light source, the image / light source control unit 7 adjusts the value of the current supplied to each of the light sources 1R, 1G, and 1B, or each light source 1R, 1G And 1B are driven by PWM (pulse width modulation) and the duty ratio of the PWM drive is adjusted to adjust the brightness of the light source.
  • PWM pulse width modulation
  • the image / light source control unit 7 When the selected light source is turned on, the image / light source control unit 7 generates an abnormality notification video signal using the OSD function, superimposes the abnormality notification video signal and the input video signal, and superimposes the superimposed superimposed video. A signal is input to the image projection unit 2 (step S405). As a result, the image projection unit 2 displays a superimposed image including the abnormality notification image.
  • the image / light source control unit 7 starts measuring time, and when the measurement time reaches a predetermined time, the light source turned on in step S404 is turned off.
  • the predetermined time is preferably about several seconds to several minutes in order to prevent the projector 100 from operating for a long time in a state where an abnormality has occurred.
  • the present embodiment when an abnormality occurs, one of the plurality of light sources is turned on, and an abnormality notification image is displayed using the light of the light source. For this reason, when an abnormality occurs, it is possible to display the contents of the abnormality to the user by turning on a smaller number of light sources than during normal times, so that the contents of the abnormality can be displayed to the user while preventing damage. It becomes possible to grasp immediately. Further, since it is not necessary to provide the projector 100 with an abnormality notification light source such as an LED, the cost of the projector 100 can be reduced. In addition, since it is not necessary to provide a space for providing an abnormality notification light source in the projector 100 housing, the design of the projector 100 can be improved.
  • the light source it is inspected whether or not the light source has a failure in order from the highest priority, and it is possible to turn on the light source when it is determined as a failure, so that the light source can be turned on quickly. It becomes possible to notify the user of the content of the abnormality more quickly.
  • the selected light source when a predetermined time has elapsed since the abnormality notification image is displayed, the selected light source is turned off, so that it is possible to prevent the image from being displayed for a long time in a state where an abnormality has occurred. It becomes possible to suppress damage more accurately.
  • the selected light source is lit with a predetermined luminance, it is possible to reduce the rise in internal temperature and power consumption.
  • the image / light source control unit 7 determines whether or not the content of the abnormality for all the light sources 1R, 1G, and 1B satisfies the failure determination condition. If there are a plurality of light sources that do not satisfy the failure determination condition, the failure determination is performed. A plurality of light sources that do not satisfy the conditions may be sequentially selected at regular time intervals. In this case, since these light sources are lit at regular time intervals, the user can determine that the light source that is not lit is out of order, so that the failed light source can be intuitively grasped. .
  • the substrate control error, the cooling error, the temperature error, and the light source error are exemplified as the abnormality detected by the error control unit.
  • the abnormality detected by the error control unit is not limited to this example, and is appropriately determined according to the specifications of the projector 100. It can be changed.
  • the image display device is not limited to the projector 100.
  • the image display device may be a liquid crystal display or a digital camera using a solid light source as a backlight.

Abstract

Provided is an image display apparatus which is capable of quickly notifying a user of the contents of an abnormality, while suppressing breakage. A display unit (2) displays, using light emitted from each of a plurality of light sources (1R, 1G, 1B), an image indicated by means of inputted image signals. In the cases where an abnormality is generated, substrate error units (3, 4, 5, 6) detect the contents of the abnormality. On the basis of the contents of the abnormality, a display control unit (7) selects one of the light sources, lights the selected light source, and inputs, as image signals, abnormality notifying image signals to the display unit (7), said abnormality notifying image signals indicating an abnormality notifying image that notifies the user of the contents of the abnormality.

Description

画像表示装置および異常通知方法Image display device and abnormality notification method
　本発明は、異常を通知することが可能な画像表示装置に関する。 The present invention relates to an image display device capable of notifying abnormality.
　プロジェクタや液晶ディスプレイなどの画像表示装置は、通常、内部温度が高くなりすぎないように、ファンで送風する空冷システムや、ポンプで液体を循環させる水冷システムのような冷却システムを備えている。 Image display devices such as projectors and liquid crystal displays are usually provided with a cooling system such as an air cooling system that blows air using a fan or a water cooling system that circulates liquid using a pump so that the internal temperature does not become too high.
　冷却システムは、一般的に、画像表示装置の内部温度を規定値以下に調整しているが、光源や冷却システムなどで異常が発生した場合、冷却システムが備わっていても、内部温度が規定値を超えてしまうことがある。内部温度が規定値を超えると、画像表示装置が破損してしまう可能性があるため、画像表示装置には、異常を検出すると、電源をオフにして動作を停止するパワーダウン機能を備えているものがある。 The cooling system generally adjusts the internal temperature of the image display device to a specified value or less. However, if an abnormality occurs in the light source or cooling system, the internal temperature is the specified value even if a cooling system is provided. May be exceeded. If the internal temperature exceeds the specified value, the image display device may be damaged. Therefore, when an abnormality is detected, the image display device has a power-down function that turns off the power and stops the operation. There is something.
　しかしながら、パワーダウン機能では、異常が解消されない限り、画像表示装置が動作しないので、ユーザは、画像表示装置の動作が停止した原因を確認することが難しいという問題がある。 However, the power down function has a problem that it is difficult for the user to confirm the cause of the operation stop of the image display device because the image display device does not operate unless the abnormality is resolved.
　この問題を解決するための技術としては、異常を検出すると、画像を表示する表示機能を停止して、ＬＥＤのような異常通知用光源を点灯させる異常通知方法が知られている。この異常通知方法では、異常の内容に応じて、異常通知用光源の色や点滅回数などを変えることで、ユーザに異常の内容を通知することができる。 As a technique for solving this problem, there is known an abnormality notification method in which when an abnormality is detected, a display function for displaying an image is stopped and an abnormality notification light source such as an LED is turned on. In this abnormality notification method, the user can be notified of the content of the abnormality by changing the color of the light source for abnormality notification, the number of blinks, etc. according to the content of the abnormality.
　しかしながら、ユーザは、異常通知用光源の色や点滅回数などから、異常の内容を直ぐに把握することは困難であるため、取扱説明書などを用いて、異常通知用光源の色や点滅回数に対応する異常の内容を調べるといった手間が発生する。また、ユーザから画像表示装置が離れている場合や、異常通知用光源が壁や他の機器などに隠れている場合には、ユーザが異常通知用光源を視認することが困難になるという問題もある。例えば、画像表示装置がプロジェクタであり、そのプロジェクタが天井から吊り下げられた状態で使用されると、ユーザから画像表示装置が離れてしまい、異常通知用光源を視認することが困難になる。 However, since it is difficult for the user to immediately understand the content of the abnormality from the color of the abnormality notification light source or the number of blinks, the user can respond to the color of the abnormality notification light source or the number of blinks using the instruction manual. The trouble of investigating the contents of abnormalities is generated. In addition, when the image display device is away from the user, or when the abnormality notification light source is hidden behind a wall or other equipment, it is difficult for the user to visually recognize the abnormality notification light source. is there. For example, if the image display device is a projector and the projector is used while being suspended from the ceiling, the image display device is separated from the user, making it difficult to visually recognize the abnormality notification light source.
　これに対して特許文献１には、複数の蛍光管をバックライトとして備え、それらの蛍光管のいずれかが故障すると、その故障した蛍光管のみを消灯させ、その後、所定のボタンが押下されると、他の蛍光管を用いて、故障した蛍光管を特定する情報と故障が発生した故障発生日時とを表示する表示装置が記載されている。 On the other hand, Patent Document 1 includes a plurality of fluorescent tubes as a backlight, and when any of the fluorescent tubes fails, only the failed fluorescent tube is turned off, and then a predetermined button is pressed. And a display device that uses other fluorescent tubes to display information that identifies the failed fluorescent tube and the date and time that the failure occurred.
特開２００４－０５３９８８号公報JP 2004-053988 A
　画像表示装置では、光源の異常だけでなく、光源以外の電子部品や冷却システムに異常が発生した場合でも、内部温度が規定値を超えてしまうことがある。 In the image display apparatus, not only the abnormality of the light source but also the occurrence of an abnormality in the electronic components other than the light source or the cooling system, the internal temperature may exceed the specified value.
　しかしながら特許文献１に記載の表示装置では、蛍光管のいずれかが故障した場合に、その故障した蛍光管を消灯させているだけなので、蛍光管の故障以外の異常が発生しても、全ての蛍光管が点灯したままとなり、内部温度が上昇しやすくなり、画像表示装置が破損しやすいという問題がある。 However, in the display device described in Patent Document 1, when one of the fluorescent tubes fails, only the failed fluorescent tube is extinguished. There is a problem that the fluorescent tube remains lit, the internal temperature easily rises, and the image display device is easily damaged.
　なお、蛍光管の故障以外の異常が発生した際には、パワーダウン機能を用いて、画像表示装置を停止したり、異常通知用光源を用いて、ユーザに異常の内容も通知したりすることも考えられるが、これらの方法では、ユーザは異常の内容を直ぐに把握することができない。 When an abnormality other than a failure of the fluorescent tube occurs, the image display device is stopped using the power-down function, or the abnormality content is notified to the user using the abnormality notification light source. However, with these methods, the user cannot immediately grasp the content of the abnormality.
　本発明の目的は、破損を抑制しつつ、ユーザに異常の内容を直ぐに把握させることが可能な画像表示装置および異常通知方法を提供することである。 An object of the present invention is to provide an image display apparatus and an abnormality notification method that can allow a user to immediately grasp the contents of an abnormality while suppressing breakage.
　本発明による画像表示装置は、複数の光源と、各光源からの光を用いて、入力された映像信号が示す画像を表示する表示部と、異常が発生した場合、前記異常の内容を検出するエラー制御部と、前記異常の内容に基づいて、前記複数の光源のいずれかを選択し、当該選択した光源を点灯させ、前記映像信号として、前記異常の内容を通知する異常通知画像を示す異常通知映像信号を前記表示部に入力する表示制御部と、を有する。 An image display device according to the present invention detects a content of an abnormality when a failure occurs, and a display unit that displays an image indicated by an input video signal using light from each of the light sources. Based on the error control unit and the content of the abnormality, select one of the plurality of light sources, turn on the selected light source, and indicate an abnormality notification image that notifies the content of the abnormality as the video signal A display control unit for inputting a notification video signal to the display unit.
　本発明による異常通知方法は、複数の光源と、各光源からの光を用いて、入力された映像信号が示す画像を表示する表示部とを有する画像表示装置による異常通知方法であって、前記異常が発生した場合、前記異常の内容を検出し、前記異常の内容に基づいて、前記複数の光源のいずれかを選択し、当該選択した光源を点灯させ、前記映像信号として、前記異常の内容を通知する異常通知画像を示す異常通知映像信号を前記表示部に入力する。 An abnormality notification method according to the present invention is an abnormality notification method by an image display device having a plurality of light sources and a display unit that displays an image indicated by an input video signal using light from each light source, When an abnormality occurs, the content of the abnormality is detected, one of the light sources is selected based on the content of the abnormality, the selected light source is turned on, and the content of the abnormality is used as the video signal. An abnormality notification video signal indicating an abnormality notification image to notify is input to the display unit.
　本発明によれば、破損を抑制しつつ、ユーザに異常の内容に直ぐ把握させることが可能になる。 According to the present invention, it is possible to allow the user to immediately grasp the content of the abnormality while suppressing breakage.
本発明の第１の実施形態のプロジェクタを示すブロック図である。1 is a block diagram illustrating a projector according to a first embodiment of the present invention. 異常通知画像の一例を示す図である。It is a figure which shows an example of an abnormality notification image. 本発明の第１の実施形態のプロジェクタの動作の一例を説明するためのフローチャートである。It is a flowchart for demonstrating an example of operation | movement of the projector of the 1st Embodiment of this invention. 本発明の第１の実施形態のプロジェクタの動作の他の例を説明するためのフローチャートである。It is a flowchart for demonstrating the other example of operation | movement of the projector of the 1st Embodiment of this invention.
　以下、本発明の実施形態について図面を参照して説明する。なお、以下の説明では、同じ機能を有するものには同じ符号を付け、その説明を省略する場合がある。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, components having the same function may be denoted by the same reference numerals and description thereof may be omitted.
　図１は、本発明の第１の実施形態のプロジェクタを示すブロック図である。図１において、プロジェクタ１００は、光源部１と、画像投写部２と、基板エラー制御部３と、冷却エラー制御部４と、温度エラー制御部５と、光源エラー制御部６と、画像・光源制御部７とを有する。 FIG. 1 is a block diagram showing a projector according to a first embodiment of the present invention. In FIG. 1, a projector 100 includes a light source unit 1, an image projection unit 2, a substrate error control unit 3, a cooling error control unit 4, a temperature error control unit 5, a light source error control unit 6, an image / light source. And a control unit 7.
　光源部１は、複数の光源を有する。本実施形態では、光源部１は、赤色光を出射する光源１Ｒと、緑色光を出射する光源１Ｇと、青色光を出射する光源１Ｂを有するものとする。なお、光源１Ｒ、１Ｇおよび１Ｂは、例えば、ＬＥＤ（Light　Emitting　Diode）や固体レーザー光源などの固体光源、または、高圧ランプなどで構成される。以下では、光源１Ｒ、１Ｇおよび１Ｂは固体光源であるとして説明する。 The light source unit 1 has a plurality of light sources. In the present embodiment, the light source unit 1 includes a light source 1R that emits red light, a light source 1G that emits green light, and a light source 1B that emits blue light. The light sources 1R, 1G, and 1B are constituted by solid light sources such as LEDs (Light Emitting Diodes) and solid laser light sources, or high-pressure lamps, for example. Below, light source 1R, 1G, and 1B are demonstrated as a solid light source.
　画像投写部２は、光源部１の各光源１Ｒ、１Ｇおよび１Ｂから出射された各色光を用いて、入力された映像信号が示す画像を表示する表示部である。例えば、画像投写部２は、入力された映像信号に応じて各色光を変調し、その変調した各色光を合成して、スクリーン（不図示）に投写することで、映像信号が示す画像をスクリーン上に表示する。 The image projection unit 2 is a display unit that displays an image indicated by an input video signal using each color light emitted from each of the light sources 1R, 1G, and 1B of the light source unit 1. For example, the image projection unit 2 modulates each color light according to the input video signal, synthesizes each modulated color light, and projects it on a screen (not shown), thereby displaying an image indicated by the video signal on the screen. Display above.
　基板エラー制御部３、冷却エラー制御部４、温度エラー制御部５および光源エラー制御部６は、エラー制御部を構成する。 The substrate error control unit 3, the cooling error control unit 4, the temperature error control unit 5 and the light source error control unit 6 constitute an error control unit.
　エラー制御部は、プロジェクタ１００に異常が発生したか否かを検出する。異常が発生した場合、エラー制御部は、異常の内容を検出し、その異常の内容を示すエラーコードを生成する。 The error control unit detects whether or not an abnormality has occurred in the projector 100. When an abnormality occurs, the error control unit detects the content of the abnormality and generates an error code indicating the content of the abnormality.
　基板エラー制御部３は、プロジェクタ１００の制御基板（不図示）に関する異常である基板エラーが発生したか否かを検出する。基板エラーは、例えば、制御基板上の電子部品の破損、複数の制御基板を接続するためのケーブルコネクタの未接続、制御基板に供給される電源電圧の異常、制御基板上の通信回路による通信エラーなどである。 The board error control unit 3 detects whether or not a board error that is an abnormality related to the control board (not shown) of the projector 100 has occurred. Board errors include, for example, breakage of electronic components on the control board, disconnection of the cable connector for connecting multiple control boards, abnormality of the power supply voltage supplied to the control board, communication error due to the communication circuit on the control board Etc.
　基板エラーが発生した場合、基板エラー制御部３は、基板エラーの内容を判定し、その基板エラーの内容を示す基板コードをエラーコードとして生成する。基板コードは、基板エラーの内容として、例えば、基板エラーが発生した旨と、その基板エラーの種類（例えば、電子部品の破損、ケーブルコネクタの未接続、電源電圧の異常、通信エラーなど）とを示す。 When a board error occurs, the board error control unit 3 determines the contents of the board error and generates a board code indicating the contents of the board error as an error code. The board code indicates, for example, that the board error has occurred and the type of the board error (for example, damage to the electronic component, cable connector not connected, power supply voltage abnormality, communication error, etc.). Show.
　冷却エラー制御部４は、プロジェクタ１００に備わった冷却システム（不図示）に関する異常である冷却エラーが発生したか否かを検出する。 The cooling error control unit 4 detects whether or not a cooling error that is an abnormality related to a cooling system (not shown) provided in the projector 100 has occurred.
　冷却システムは、プロジェクタ１００の内部温度を調整するシステムである。冷却システムとしては、例えば、空冷ファンを用いてプロジェクタ１００内部に送風する空冷システム、水冷ポンプを用いてプロジェクタ１００に設けられた配管内の液体を循環させる水冷システム、および、ペルチェ素子のような熱電素子を用いて内部温度を調整する熱電冷却システムが挙げられる。 The cooling system is a system that adjusts the internal temperature of the projector 100. Examples of the cooling system include an air cooling system that blows air into the projector 100 using an air cooling fan, a water cooling system that circulates liquid in a pipe provided in the projector 100 using a water cooling pump, and a thermoelectric device such as a Peltier element. The thermoelectric cooling system which adjusts internal temperature using an element is mentioned.
　冷却エラーは、例えば、空冷ファンまたは水冷ポンプの回転数が所定の回転制御範囲から外れる回転エラー、または、熱電素子の温度が所定の温度制御範囲から外れる素子エラーである。なお、冷却システムが熱電冷却システムの場合、冷却エラー制御部４は、熱電素子付近に設けられた温度センサを備え、その温度センサにて検出される温度を熱電素子の温度として監視し、その熱電素子の温度が温度制御範囲から外れると、素子エラーが発生したことを検出する。 The cooling error is, for example, a rotation error in which the rotation speed of the air cooling fan or the water cooling pump is out of a predetermined rotation control range, or an element error in which the temperature of the thermoelectric element is out of a predetermined temperature control range. When the cooling system is a thermoelectric cooling system, the cooling error control unit 4 includes a temperature sensor provided in the vicinity of the thermoelectric element, and monitors the temperature detected by the temperature sensor as the temperature of the thermoelectric element. When the temperature of the element is out of the temperature control range, it is detected that an element error has occurred.
　冷却エラーが発生した場合、冷却エラー制御部４は、冷却エラーの内容を判定し、その冷却エラーの内容を示す冷却コードをエラーコードとして生成する。冷却コードは、冷却エラーの内容として、例えば、冷却エラーが発生した旨と、冷却エラーが発生した空冷ファンや水冷ポンプまたは素子エラーが発生した熱電素子とを示す。 When a cooling error has occurred, the cooling error control unit 4 determines the content of the cooling error and generates a cooling code indicating the content of the cooling error as an error code. The cooling code indicates, as the content of the cooling error, for example, that a cooling error has occurred, and an air cooling fan or water cooling pump in which a cooling error has occurred, or a thermoelectric element in which an element error has occurred.
　温度エラー制御部５は、プロジェクタ１００の内部温度に関する異常である温度エラーが発生したか否かを検出する。 The temperature error control unit 5 detects whether or not a temperature error that is an abnormality related to the internal temperature of the projector 100 has occurred.
　温度エラーは、例えば、プロジェクタ１００の内部温度が所定の使用温度範囲から外れることである。この場合、冷却エラー制御部４は、温度センサを備え、その温度センサにて検出された温度を監視し、その温度が使用温度範囲から外れると、温度エラーが発生したことを検出する。 The temperature error is, for example, that the internal temperature of the projector 100 is out of a predetermined operating temperature range. In this case, the cooling error control unit 4 includes a temperature sensor, monitors the temperature detected by the temperature sensor, and detects that a temperature error has occurred when the temperature is out of the operating temperature range.
　温度センサが設置される設置場所としては、冷却システムの影響を受ける通気経路内や、熱発生源となる光源１Ｒ、１Ｇおよび１Ｂ付近などが挙げられる。本実施形態では、温度センサは、少なくとも、各光源１Ｒ、１Ｇおよび１Ｂ付近に設置されており、冷却エラー制御部４は、各光源１Ｒ、１Ｇおよび１Ｂ付近に設置されている温度センサにて検出される温度を各光源１Ｒ、１Ｇおよび１Ｂの温度として監視しているものとする。 The installation location where the temperature sensor is installed includes the inside of a ventilation path affected by the cooling system, and the vicinity of the light sources 1R, 1G, and 1B serving as heat generation sources. In the present embodiment, the temperature sensor is installed at least near each of the light sources 1R, 1G, and 1B, and the cooling error control unit 4 is detected by the temperature sensor installed near each of the light sources 1R, 1G, and 1B. It is assumed that the detected temperature is monitored as the temperature of each light source 1R, 1G, and 1B.
　なお、温度センサは、温度検出用のサーミスタ、バイメタルおよびＩＣ（Integrated　Circuit）などを含む。また、冷却エラー制御部４が温度センサを用いて熱電素子の温度を監視している場合、熱電素子に関する異常は、冷却エラーとして検出されるものとし、温度エラーには含まれないものとする。 The temperature sensor includes a temperature detection thermistor, bimetal, and IC (Integrated Circuit). Further, when the cooling error control unit 4 monitors the temperature of the thermoelectric element using the temperature sensor, an abnormality relating to the thermoelectric element is detected as a cooling error and is not included in the temperature error.
　温度エラーが発生した場合、温度エラー制御部５は、温度エラーの内容を検出し、その温度エラーの内容を示す温度コードをエラーコードとして生成する。温度コードは、温度エラーの内容として、例えば、温度エラーが発生した旨と、その温度エラーが発生した光源とを示す。 When a temperature error occurs, the temperature error control unit 5 detects the content of the temperature error and generates a temperature code indicating the content of the temperature error as an error code. The temperature code indicates the content of the temperature error, for example, that a temperature error has occurred and the light source in which the temperature error has occurred.
　光源エラー制御部６は、各光源１Ｒ、１Ｇおよび１Ｂの輝度に関する光源エラーが発生したか否かを検出する。 The light source error control unit 6 detects whether or not a light source error related to the luminance of each of the light sources 1R, 1G, and 1B has occurred.
　光源エラーは、例えば、各光源１Ｒ、１Ｇおよび１Ｂが点灯するように制御されている場合に、各光源１Ｒ、１Ｇおよび１Ｂの輝度が所定の点灯制御範囲から外れていることである。この場合、光源エラー制御部６は、各光源１Ｒ、１Ｇおよび１Ｂ付近に、輝度を測定するカラーセンサを備え、そのカラーセンサにて検出された輝度を各光源１Ｒ、１Ｇおよび１Ｂの輝度として監視し、それらの輝度の少なくとも一つが点灯制御範囲から外れると、光源エラーが発生したことを検出する。 The light source error is, for example, that the brightness of each light source 1R, 1G, and 1B is out of a predetermined lighting control range when each light source 1R, 1G, and 1B is controlled to light. In this case, the light source error control unit 6 is provided with a color sensor that measures luminance near each of the light sources 1R, 1G, and 1B, and monitors the luminance detected by the color sensor as the luminance of each light source 1R, 1G, and 1B. If at least one of the luminances is out of the lighting control range, it is detected that a light source error has occurred.
　光源エラーが発生した場合、光源エラー制御部６は、光源エラーの内容を検出し、その光源エラーの内容を示す光源コードをエラーコードとして生成する。光源コードは、光源エラーの内容として、例えば、光源エラーが発生した旨と、その光源エラーが発生した光源を示す。また、光源コードは、光源エラーの内容として、光源エラーが発生した光源の輝度をさらに示してもよい。 When a light source error has occurred, the light source error control unit 6 detects the content of the light source error and generates a light source code indicating the content of the light source error as an error code. The light source code indicates, for example, that the light source error has occurred and the light source in which the light source error has occurred as the content of the light source error. The light source code may further indicate the luminance of the light source in which the light source error has occurred as the content of the light source error.
　画像・光源制御部７は、光源部１および画像投写部２を制御して、画像を表示する表示制御部である。 The image / light source control unit 7 is a display control unit that controls the light source unit 1 and the image projection unit 2 to display an image.
　エラー制御部（基板エラー制御部３、冷却エラー制御部４、温度エラー制御部５および光源エラー制御部６）にて異常が検出されていない場合、画像・光源制御部７は、光源１Ｒ、１Ｇおよび１Ｂを点灯させる制御を行う。そして、画像・光源制御部７は、映像信号が入力されると、その入力された入力映像信号を画像投写部２に出力することで、画像投写部２に入力映像信号が示す画像をスクリーンに対して投写させる。 When no error is detected in the error control unit (substrate error control unit 3, cooling error control unit 4, temperature error control unit 5 and light source error control unit 6), the image / light source control unit 7 selects the light sources 1R, 1G. And 1B are turned on. Then, when a video signal is input, the image / light source control unit 7 outputs the input video signal to the image projection unit 2 so that the image indicated by the input video signal is displayed on the screen. Make the projection.
　また、エラー制御部にて異常が検出された場合、画像・光源制御部７は、光源１Ｒ、１Ｇおよび１Ｂの全てを一旦消灯させる。 If an error is detected by the error control unit, the image / light source control unit 7 temporarily turns off all of the light sources 1R, 1G, and 1B.
　その後、画像・光源制御部７は、エラー制御部にて生成されたエラーコードに基づいて、光源１Ｒ、１Ｇおよび１Ｂのいずれかを選択し、その選択した光源を点灯させる。 Thereafter, the image / light source control unit 7 selects one of the light sources 1R, 1G, and 1B based on the error code generated by the error control unit, and turns on the selected light source.
　具体的には、画像・光源制御部７は、各光源１Ｒ、１Ｇおよび１Ｂに対して、エラーコードが示す異常の内容がその光源を故障と判定する故障判定条件を満たすか否かを検査し、その光源が故障しているか否かを検査する。なお、画像・光源制御部７は、異常の内容が故障判定条件を満たす場合、光源は故障していると判定し、異常の内容が故障判定条件を満たさない場合、光源は故障していないと判定する。 Specifically, the image / light source control unit 7 checks, for each of the light sources 1R, 1G, and 1B, whether the content of the abnormality indicated by the error code satisfies a failure determination condition for determining that the light source is failed. Inspect whether the light source is broken or not. The image / light source control unit 7 determines that the light source has failed when the content of the abnormality satisfies the failure determination condition, and determines that the light source has not failed when the content of the abnormality does not satisfy the failure determination condition. judge.
　そして、画像・光源制御部７は、故障していないと判定された光源を選択する。 Then, the image / light source control unit 7 selects a light source determined not to have a failure.
　異常が発生した場合に、プロジェクタ１００の内部温度の上昇を抑制するためには、同時に点灯する光源は一つだけであることが望ましい。 In order to suppress an increase in the internal temperature of the projector 100 when an abnormality occurs, it is desirable that only one light source is turned on at the same time.
　このため、本実施形態では、各光源１Ｒ、１Ｇおよび１Ｂに対して予め設定された優先順位が高い方から順番に、異常の内容が故障判定条件を満たすか否かを検査していき、故障判定条件を満たさないと判定された時点で、その故障判定条件を満たさない光源のみを選択する。なお、優先順位は、特に限定されないが、本実施形態では、光源１Ｒが最も高く、１Ｇ、１Ｂの順に低くなっているものとする。 For this reason, in the present embodiment, in order from the highest priority set in advance for each of the light sources 1R, 1G, and 1B, it is checked whether or not the content of the abnormality satisfies the failure determination condition. When it is determined that the determination condition is not satisfied, only the light source that does not satisfy the failure determination condition is selected. Although the priority order is not particularly limited, in the present embodiment, the light source 1R is the highest, and is assumed to be lower in the order of 1G and 1B.
　故障判定条件は、例えば、光源に温度エラーと光源エラーの少なくとも一方が発生していることである。 The failure determination condition is, for example, that at least one of a temperature error and a light source error has occurred in the light source.
　また、故障判定条件は、光源に光源エラーが発生していても、その光源の輝度が所定輝度よりも高い場合には、光源を故障と判定しないような条件が含まれていてもよい。この場合、光源に温度エラーが発生していると、画像・光源制御部７は、故障判定条件が満たされると判断する。また、光源に温度エラーが発生していないと、画像・光源制御部７は、光源エラーが発生し、かつ、光源の輝度が所定輝度未満であると、故障判定条件を満たされると判断する。これにより、光源の輝度が低すぎる場合には、光源が故障と判断され、光源の輝度が点灯制御範囲から少しずれているだけの場合には、光源は故障と判断されない。 Further, the failure determination condition may include a condition in which even if a light source error has occurred in the light source, the light source is not determined to be defective when the luminance of the light source is higher than a predetermined luminance. In this case, if a temperature error has occurred in the light source, the image / light source control unit 7 determines that the failure determination condition is satisfied. If no temperature error occurs in the light source, the image / light source control unit 7 determines that the failure determination condition is satisfied when the light source error occurs and the luminance of the light source is less than the predetermined luminance. Thereby, when the luminance of the light source is too low, it is determined that the light source is out of order, and when the luminance of the light source is slightly deviated from the lighting control range, the light source is not determined as out of order.
　なお、故障判定条件は、画像・光源制御部７に予め設定されているものとする。また、故障判定条件は、プロジェクタ１００の部品仕様、特に光源１Ｒ、１Ｇおよび１Ｂの部品仕様に応じて適宜設定されるものとする。 Note that the failure determination condition is set in advance in the image / light source control unit 7. Further, the failure determination condition is appropriately set according to the component specifications of the projector 100, particularly the component specifications of the light sources 1R, 1G, and 1B.
　選択した光源を点灯させると、画像・光源制御部７は、映像信号として、異常の内容を通知する異常通知画像を示す異常通知映像信号を画像投写部２に入力して、画像投写部２に異常通知画像を表示させることで、異常の内容をユーザに通知する。なお、異常通知画像２０２は、異常の内容だけでなく、異常の解決策や、サポートセンターの連絡先（ＵＲＬや電子メールアドレスなど）を含んでいてもよい。また、異常の解決策やサポートセンターの連絡先のようにデータ量が多いものについては、携帯電話機などで読み取り可能な二次元バーコードで表されていてもよい。 When the selected light source is turned on, the image / light source control unit 7 inputs an abnormality notification video signal indicating an abnormality notification image for notifying the content of the abnormality to the image projection unit 2 as a video signal, and inputs it to the image projection unit 2. By displaying the abnormality notification image, the user is notified of the content of the abnormality. Note that the abnormality notification image 202 may include not only the content of the abnormality but also a solution to the abnormality and a contact information (such as a URL or an e-mail address) of the support center. In addition, a large amount of data such as an abnormality solution or a support center contact may be represented by a two-dimensional barcode that can be read by a mobile phone or the like.
　図２は、異常通知映像信号が示す異常通知画像の一例を示す図である。図２の例では、画像・光源制御部７は、ＯＳＤ（On-Screen　Display）機能を用いて、異常通知映像信号を入力映像信号に重畳して画像投写部２に入力することで、スクリーン２００上の投写画像２０１の中に異常通知画像２０２を表示している。なお、異常通知画像２０２は、異常が発生した旨「ＷＡＲＮＩＧ　エラーが発生しました」、異常の内容「ＥＲＲＯＲ＿Ｎｏ［３］　温度異常です」およびサポートセンターへの連絡方法「サポートセンターへの連絡…ｈｔｔｐ：／／ｗｗｗ…」を含んでいる。 FIG. 2 is a diagram illustrating an example of an abnormality notification image indicated by the abnormality notification video signal. In the example of FIG. 2, the image / light source control unit 7 uses the OSD (On-Screen Display) function to superimpose the abnormality notification video signal on the input video signal and input it to the image projection unit 2, thereby causing the screen 200. An abnormality notification image 202 is displayed in the upper projected image 201. The abnormality notification image 202 indicates that an abnormality has occurred, “WARNIG error has occurred”, the content of the abnormality “ERROR_No [3] Temperature is abnormal”, and a method for contacting the support center “Contacting the support center… http: // www ... ".
　図１の説明に戻る。画像・光源制御部７は、異常通知映像信号を画像投写部２に入力してから所定時間が経過すると、光源１Ｒ、１Ｇおよび１Ｂの全てを消灯させる。 Returning to the explanation of FIG. The image / light source control unit 7 turns off all of the light sources 1R, 1G, and 1B when a predetermined time has elapsed since the abnormality notification video signal was input to the image projection unit 2.
　次に動作を説明する。 Next, the operation will be described.
　図３は、プロジェクタ１００による異常を検出するエラー検出処理に係る動作を説明するためのフローチャートである。 FIG. 3 is a flowchart for explaining an operation related to an error detection process for detecting an abnormality by the projector 100.
　先ず、プロジェクタ１００の電源がオンになり、プロジェクタ１００が起動すると、画像・光源制御部７は、エラー検出処理を実行するエラー検出処理フラグをオンにする（ステップＳ３０１）。 First, when the power of the projector 100 is turned on and the projector 100 is activated, the image / light source control unit 7 turns on an error detection processing flag for executing error detection processing (step S301).
　エラー検出処理フラグをオンにすると、画像・光源制御部７は、エラー制御部にて異常が検出されたか否かを判断する（ステップＳ３０２）。 When the error detection processing flag is turned on, the image / light source control unit 7 determines whether an error is detected by the error control unit (step S302).
　より具体的には、画像・光源制御部７は、エラー制御部内の各部を所定の順番に確認して、基板エラー、冷却エラー、温度エラーおよび光源エラーのそれぞれが検出されたか否かを判断する。例えば、画像・光源制御部７は、基板エラー制御部３、冷却エラー制御部４、温度エラー制御部５、光源エラー制御部６の順番に確認して、基板エラー、冷却エラー、温度エラー、光源エラーの順に、検出された否かを判断していく。なお、画像・光源制御部７は、エラー制御部の各部を所定の順番に確認する代わりに、エラー制御部の各部を同時に確認してもよい。 More specifically, the image / light source control unit 7 checks each part in the error control unit in a predetermined order, and determines whether a substrate error, a cooling error, a temperature error, and a light source error are detected. . For example, the image / light source control unit 7 checks the substrate error control unit 3, the cooling error control unit 4, the temperature error control unit 5, and the light source error control unit 6 in this order to check the substrate error, cooling error, temperature error, and light source. It is determined whether or not they are detected in the order of errors. Note that the image / light source control unit 7 may simultaneously check each unit of the error control unit instead of checking each unit of the error control unit in a predetermined order.
　基板エラー、冷却エラー、温度エラーおよび光源エラーの少なくとも一つが検出された場合、画像・光源制御部７は、異常が検出されたと判断し、基板エラー、冷却エラー、温度エラーおよび光源エラーの全てが検出されていない場合、画像・光源制御部７は、異常が検出されていないと判断する。 When at least one of a substrate error, a cooling error, a temperature error, and a light source error is detected, the image / light source control unit 7 determines that an abnormality has been detected, and all of the substrate error, the cooling error, the temperature error, and the light source error are detected. If not detected, the image / light source controller 7 determines that no abnormality has been detected.
　異常が検出されていない場合、画像・光源制御部７は、ステップＳ３０２の処理に戻る。 If no abnormality is detected, the image / light source control unit 7 returns to the process of step S302.
　一方、異常が検出された場合、画像・光源制御部７は、エラー制御部から異常の内容を示すエラーコードを取得する（ステップＳ３０３）。より具体的には、画像・光源制御部７は、エラー制御部の各部のうち、エラーを検出したものからエラーコードを取得する。 On the other hand, when an abnormality is detected, the image / light source control unit 7 acquires an error code indicating the content of the abnormality from the error control unit (step S303). More specifically, the image / light source control unit 7 obtains an error code from the part in which the error is detected among the units of the error control unit.
　エラーコードを取得すると、画像・光源制御部７は、光源１Ｒ、１Ｇおよび１Ｂの全てを停止する（ステップＳ３０４）。 When the error code is acquired, the image / light source controller 7 stops all of the light sources 1R, 1G, and 1B (step S304).
　その後、画像・光源制御部７は、取得したエラーコードに基づいて、エラーの内容をユーザに通知するエラー通知処理を実行し（ステップＳ３０５）、エラー検出処理を終了する。 Thereafter, the image / light source control unit 7 executes an error notification process for notifying the user of the error content based on the acquired error code (step S305), and ends the error detection process.
　図４は、ステップＳ３０５で実行されるエラー通知処理をより詳細に説明するためのフローチャートである。 FIG. 4 is a flowchart for explaining the error notification process executed in step S305 in more detail.
　エラー通知処理では、画像・光源制御部７は、先ず、エラーコードが示す異常の内容が光源１Ｒを故障と判定する故障判定条件を満たすか否かを検査して、光源１Ｒが故障しているかを判定する（ステップＳ４０１）。 In the error notification process, the image / light source control unit 7 first checks whether or not the content of the abnormality indicated by the error code satisfies a failure determination condition for determining that the light source 1R is failed, and whether the light source 1R has failed. Is determined (step S401).
　光源１Ｒが故障している場合、画像・光源制御部７は、エラーコードが示す異常の内容が光源１Ｇを故障と判定する故障判定条件を満たすか否かを検査して、光源１Ｇが故障しているか否かを判定する（ステップＳ４０２）。 When the light source 1R has failed, the image / light source control unit 7 checks whether or not the content of the abnormality indicated by the error code satisfies a failure determination condition for determining that the light source 1G is failed, and the light source 1G has failed. It is determined whether or not (step S402).
　光源１Ｇが故障している場合、画像・光源制御部７は、エラーコードが示す異常の内容が光源１Ｂを故障と判定する故障判定条件を満たすか否かを検査して、光源１Ｂが故障しているか否かを判定する（ステップＳ４０３）。 When the light source 1G has failed, the image / light source control unit 7 checks whether or not the content of the abnormality indicated by the error code satisfies a failure determination condition for determining that the light source 1B is failed, and the light source 1B has failed. It is determined whether or not (step S403).
　光源１Ｂが故障している場合、画像・光源制御部７は、エラー通知処理を終了する。なお、プロジェクタ１００がＬＥＤのような異常通知用光源を有している場合、画像・光源制御部７は、異常通知用光源を点灯することで、ユーザに異常の内容を通知してもよい。 When the light source 1B is out of order, the image / light source control unit 7 ends the error notification process. If the projector 100 has a light source for abnormality notification such as an LED, the image / light source control unit 7 may notify the user of the content of the abnormality by turning on the light source for abnormality notification.
　また、ステップＳ４０１～Ｓ４０３のいずれかにおいて、光源が故障されていないと判断された場合、画像・光源制御部７は、その異常がないと判定した光源を選択し、その選択した光源のみを点灯させる（ステップＳ４０４）。 If it is determined in any of steps S401 to S403 that the light source has not failed, the image / light source control unit 7 selects the light source determined not to be abnormal, and turns on only the selected light source. (Step S404).
　このとき、画像・光源制御部７は、選択した光源を所定の輝度で点灯させるものとする。なお、所定の輝度は、プロジェクタ１００の内部温度の上昇を抑制するために、ユーザが異常通知画像を視認できる最低限度の輝度や、最低限度の輝度より少し高い輝度であることが望ましい。なお、各光源１Ｒ、１Ｇおよび１Ｂが固体光源で構成されているので、画像・光源制御部７は、各光源１Ｒ、１Ｇおよび１Ｂに投入する電流の値を調整したり、各光源１Ｒ、１Ｇおよび１ＢをＰＷＭ（pulse　width　modulation：パルス幅変調）駆動させ、そのＰＷＭ駆動のデューティー比を調整したりすることで、光源の輝度を調整することができる。 At this time, the image / light source control unit 7 turns on the selected light source with a predetermined luminance. In addition, in order to suppress an increase in the internal temperature of the projector 100, the predetermined luminance is desirably a minimum luminance at which the user can visually recognize the abnormality notification image or a luminance slightly higher than the minimum luminance. Since each of the light sources 1R, 1G, and 1B is formed of a solid light source, the image / light source control unit 7 adjusts the value of the current supplied to each of the light sources 1R, 1G, and 1B, or each light source 1R, 1G And 1B are driven by PWM (pulse width modulation) and the duty ratio of the PWM drive is adjusted to adjust the brightness of the light source.
　選択した光源を点灯させると、画像・光源制御部７は、ＯＳＤ機能を用いて、異常通知映像信号を生成し、その異常通知映像信号と入力映像信号とを重畳し、その重畳された重畳映像信号を画像投写部２に入力する（ステップＳ４０５）。これにより、画像投写部２は、異常通知画像を含む重畳画像を表示することになる。 When the selected light source is turned on, the image / light source control unit 7 generates an abnormality notification video signal using the OSD function, superimposes the abnormality notification video signal and the input video signal, and superimposes the superimposed superimposed video. A signal is input to the image projection unit 2 (step S405). As a result, the image projection unit 2 displays a superimposed image including the abnormality notification image.
　重畳映像信号を画像投写部２に入力すると、画像・光源制御部７は、時間の計測を開始し、その計測時間が所定時間になると、ステップＳ４０４で点灯させた光源を消灯させる。なお、所定時間は、異常が発生した状態でプロジェクタ１００が長時間動作することを防止するために、数秒～数分程度が望ましい。 When the superimposed video signal is input to the image projection unit 2, the image / light source control unit 7 starts measuring time, and when the measurement time reaches a predetermined time, the light source turned on in step S404 is turned off. The predetermined time is preferably about several seconds to several minutes in order to prevent the projector 100 from operating for a long time in a state where an abnormality has occurred.
　以上説明したように本実施形態によれば、異常が発生すると、複数の光源のいずれかが点灯され、その光源の光を用いて異常通知画像が表示される。このため、異常が発生した場合、通常時よりも少ない数の光源を点灯させることで、ユーザに異常の内容を表示することが可能になるので、破損を抑制しつつ、ユーザに異常の内容を直ぐに把握させることが可能になる。また、ＬＥＤのような異常通知用光源をプロジェクタ１００に設ける必要がないので、プロジェクタ１００のコストを低くすることが可能になる。また、プロジェクタ１００筐体に異常通知用光源を設けるスペースが必要なくなるので、プロジェクタ１００のデザイン性を向上させることが可能になる。 As described above, according to the present embodiment, when an abnormality occurs, one of the plurality of light sources is turned on, and an abnormality notification image is displayed using the light of the light source. For this reason, when an abnormality occurs, it is possible to display the contents of the abnormality to the user by turning on a smaller number of light sources than during normal times, so that the contents of the abnormality can be displayed to the user while preventing damage. It becomes possible to grasp immediately. Further, since it is not necessary to provide the projector 100 with an abnormality notification light source such as an LED, the cost of the projector 100 can be reduced. In addition, since it is not necessary to provide a space for providing an abnormality notification light source in the projector 100 housing, the design of the projector 100 can be improved.
　また、本実施形態では、優先順位が高い方から順に光源が故障か否かが検査され、故障と判定された時点でその光源を点灯させることが可能になるので、迅速に光源を点灯させることが可能になり、異常の内容をより迅速にユーザに通知することが可能になる。 Further, in this embodiment, it is inspected whether or not the light source has a failure in order from the highest priority, and it is possible to turn on the light source when it is determined as a failure, so that the light source can be turned on quickly. It becomes possible to notify the user of the content of the abnormality more quickly.
　また、本実施形態では、異常が発生した場合、光源１Ｒ、１Ｇおよび１Ｂの全てが一旦消灯されるので、破損をより正確に抑制することが可能になる。 Further, in the present embodiment, when an abnormality occurs, all of the light sources 1R, 1G, and 1B are temporarily turned off, so that damage can be more accurately suppressed.
　また、本実施形態では、異常通知画像が表示されてから所定時間が経過すると、選択された光源が消灯されるので、異常が発生している状態で、長時間画像が表示されることを抑制することが可能になり、破損をより正確に抑制することが可能になる。 In the present embodiment, when a predetermined time has elapsed since the abnormality notification image is displayed, the selected light source is turned off, so that it is possible to prevent the image from being displayed for a long time in a state where an abnormality has occurred. It becomes possible to suppress damage more accurately.
　また、本実施形態では、選択された光源が所定の輝度で点灯されるので、内部温度の上昇や電力の消費を軽減することが可能になる。 Further, in the present embodiment, since the selected light source is lit with a predetermined luminance, it is possible to reduce the rise in internal temperature and power consumption.
　次に本発明の他の実施形態について説明する。 Next, another embodiment of the present invention will be described.
　画像・光源制御部７は、全ての光源１Ｒ、１Ｇおよび１Ｂに対して異常の内容が故障判定条件を満たすか否かを判定し、故障判定条件を満たさない光源が複数ある場合、その故障判定条件を満たさない複数の光源を一定時間間隔で順番に選択してもよい。この場合、それらの光源が一定時間間隔で点灯するため、ユーザは、点灯しない光源が故障していると判断することが可能になるので、故障した光源を直感的に把握させることが可能になる。 The image / light source control unit 7 determines whether or not the content of the abnormality for all the light sources 1R, 1G, and 1B satisfies the failure determination condition. If there are a plurality of light sources that do not satisfy the failure determination condition, the failure determination is performed. A plurality of light sources that do not satisfy the conditions may be sequentially selected at regular time intervals. In this case, since these light sources are lit at regular time intervals, the user can determine that the light source that is not lit is out of order, so that the failed light source can be intuitively grasped. .
　また、エラー制御部が検出する異常として、基板エラー、冷却エラー、温度エラーおよび光源エラーを例示したが、エラー制御部が検出する異常は、この例に限らず、プロジェクタ１００の仕様に応じて適宜変更可能である。 Further, the substrate control error, the cooling error, the temperature error, and the light source error are exemplified as the abnormality detected by the error control unit. However, the abnormality detected by the error control unit is not limited to this example, and is appropriately determined according to the specifications of the projector 100. It can be changed.
　また、画像表示装置としてプロジェクタ１００を例示したが、画像表示装置は、プロジェクタ１００に限らない。例えば、画像表示装置は、固体光源をバックライトとした液晶ディスプレイやデジカメなどでもよい。 Further, although the projector 100 is exemplified as the image display device, the image display device is not limited to the projector 100. For example, the image display device may be a liquid crystal display or a digital camera using a solid light source as a backlight.
　以上説明した各実施形態において、図示した構成は単なる一例であって、本発明はその構成に限定されるものではない。 In each embodiment described above, the illustrated configuration is merely an example, and the present invention is not limited to the configuration.
　１　　　　光源部
　１Ｒ、１Ｇ、１Ｂ　　光源
　２　　　　画像投写部
　３　　　　基板エラー制御部
　４　　　　冷却エラー制御部
　５　　　　温度エラー制御部
　６　　　　光源エラー制御部
　７　　　　画像・光源制御部
　１００　　プロジェクタ DESCRIPTION OF SYMBOLS 1 Light source part 1R, 1G, 1B Light source 2 Image projection part 3 Board | substrate error control part 4 Cooling error control part 5 Temperature error control part 6 Light source error control part 7 Image and light source control part 100 Projector

Claims (8)

  1. 　複数の光源と、
    　各光源からの光を用いて、入力された映像信号が示す画像を表示する表示部と、
    　異常が発生した場合、前記異常の内容を検出するエラー制御部と、
    　前記異常の内容に基づいて、前記複数の光源のいずれかを選択し、当該選択した光源を点灯させ、前記映像信号として、前記異常の内容を通知する異常通知画像を示す異常通知映像信号を前記表示部に入力する表示制御部と、を有する画像表示装置。     Multiple light sources;
    A display unit that displays an image indicated by the input video signal using light from each light source;
    When an abnormality occurs, an error control unit that detects the content of the abnormality,
    Based on the content of the abnormality, select one of the plurality of light sources, turn on the selected light source, and as the video signal, an abnormality notification video signal indicating an abnormality notification image that notifies the content of the abnormality An image display apparatus comprising: a display control unit that inputs to the display unit.
  2. 　請求項１に記載の画像表示装置において、
    　前記表示制御部は、各光源に対して、前記異常の内容が当該光源を故障と判定する故障判定条件を満たすか否かを検査し、前記故障判定条件を満たさない光源を選択する、画像表示装置。     The image display device according to claim 1,
    The display control unit checks, for each light source, whether or not the content of the abnormality satisfies a failure determination condition for determining the light source as a failure, and selects a light source that does not satisfy the failure determination condition. apparatus.
  3. 　請求項２に記載の画像表示装置において、
    　前記表示制御部は、各光源に対して予め設定された優先順位が高い方から順番に、前記異常の内容が前記故障判定条件を満たすか否かを検査していき、前記故障判定条件を満たさないと判定されると、当該光源を選択する、画像表示装置。     The image display device according to claim 2,
    The display control unit sequentially checks whether or not the content of the abnormality satisfies the failure determination condition in order from the highest priority set in advance for each light source, and satisfies the failure determination condition. An image display device that selects the light source when it is determined that there is no.
  4. 　請求項２に記載の画像表示装置において、
    　前記表示制御部は、前記故障判定条件を満たさない光源が複数ある場合、当該複数の光源のそれぞれを一定時間間隔で順番に選択する、画像表示装置。     The image display device according to claim 2,
    When there are a plurality of light sources that do not satisfy the failure determination condition, the display control unit selects each of the plurality of light sources in order at regular time intervals.
  5. 　請求項１ないし４のいずれか１項に記載の画像表示装置において、
    　前記表示制御部は、前記異常が発生した場合、前記複数の光源の全てを消灯させてから、前記複数の光源のいずれかを選択する、画像表示装置。     The image display device according to any one of claims 1 to 4,
    The display control unit, when the abnormality occurs, turns off all of the plurality of light sources and then selects one of the plurality of light sources.
  6. 　請求項１ないし５のいずれか１項に記載の画像表示装置において、
    　前記表示制御部は、前記異常通知映像信号を前記表示部に入力してから所定時間が経過すると、前記複数の光源の全てを消灯させる、画像表示装置。     In the image display device according to any one of claims 1 to 5,
    The display control unit is an image display device that turns off all of the plurality of light sources when a predetermined time elapses after the abnormality notification video signal is input to the display unit.
  7. 　請求項１ないし６のいずれか１項に記載の画像表示装置において、
    　前記表示制御部は、前記選択した光源を所定の輝度で点灯させる、画像表示装置。     The image display device according to any one of claims 1 to 6,
    The display control unit is an image display device that turns on the selected light source with a predetermined luminance.
  8. 　複数の光源と、各光源からの光を用いて、入力された映像信号が示す画像を表示する表示部とを有する画像表示装置による異常通知方法であって、
    　前記異常が発生した場合、前記異常の内容を検出し、
    　前記異常の内容に基づいて、前記複数の光源のいずれかを選択し、
    　当該選択した光源を点灯させ、
    　前記映像信号として、前記異常の内容を通知する異常通知画像を示す異常通知映像信号を前記表示部に入力する、異常通知方法。     An abnormality notification method by an image display device having a plurality of light sources and a display unit that displays an image indicated by an input video signal using light from each light source,
    When the abnormality occurs, the content of the abnormality is detected,
    Based on the content of the abnormality, select one of the plurality of light sources,
    Turn on the selected light source,
    An abnormality notification method, wherein an abnormality notification video signal indicating an abnormality notification image for notifying the content of the abnormality is input to the display unit as the video signal.
PCT/JP2012/059034 2012-04-03 2012-04-03 Image display apparatus and abnormality notifying method WO2013150604A1 (en)

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