WO2005088908A1 - 画像伝送システムおよび画像伝送方法 - Google Patents
画像伝送システムおよび画像伝送方法 Download PDFInfo
- Publication number
- WO2005088908A1 WO2005088908A1 PCT/JP2005/003951 JP2005003951W WO2005088908A1 WO 2005088908 A1 WO2005088908 A1 WO 2005088908A1 JP 2005003951 W JP2005003951 W JP 2005003951W WO 2005088908 A1 WO2005088908 A1 WO 2005088908A1
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- WIPO (PCT)
- Prior art keywords
- image
- information
- projection device
- projector
- image projection
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/14—Display of multiple viewports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
Definitions
- the present invention relates to a transmission system and a transmission method of an image transmitted from an image generation device such as a personal computer (hereinafter, referred to as “PC”) to an image projection device such as a projector.
- an image generation device such as a personal computer (hereinafter, referred to as “PC”)
- an image projection device such as a projector.
- a PC and a projector exchange image signals by analog connection via an RGB cable.
- a wireless transmission system for simultaneously displaying image signals on one projector has also been disclosed (for example, see Patent Document 1).
- Patent Document 1 JP 2003-330436 A
- the present invention has been made in view of the above problems, and has as its object to provide an image transmission system that allows a user to grasp the communication state between a PC and a projector.
- an image transmission system includes a plurality of image generation devices that generate images, and an image projection device that projects a plurality of images transmitted from the image generation devices.
- An image transmission system configured, wherein the image projection device generates state monitoring means for monitoring a communication state with a plurality of the image generation apparatuses, and information about a communication state monitored by the state monitoring means.
- a display means for displaying an analysis result of the analysis means. This allows the PC to receive and display information on the communication state of the projector that is constantly distributed from the projector, so that the user can grasp the communication state between the PC and the projector.
- the analysis unit specifies an image projection device that is a source of the information, and the image generation device further notifies the specified image projection device that the information has been received.
- Notifying means wherein the state monitoring means counts the number of the notifications as the number of the image generating apparatuses connected to the image projecting apparatus, and the beacon generating means includes the number in the information.
- the information may be generated.
- the PC connects to the projector with the projector power, and receives and displays information including the number of PCs. Therefore, the user can determine how many other users are connected to the projector. You can know ⁇ .
- the image projection device may further include a unique device for identifying the image projection device.
- ID assigning means for assigning a unique identifier, wherein the beacon generating means generates the information by including the identifier in the information, the receiving means receives the information from the plurality of image projection devices, It is preferable that the analysis unit specifies an image projection device that is a source of the information based on the identifier, and the display unit displays the identifier of the specified image projection device. This allows the PC to determine which projector to connect to even in an environment where a plurality of projectors exist.
- the image generation device accepts designation of an identifier of the image projection device, generates a confirmation packet for inquiring the location of the image projection device, and assigns the identifier to the image projection device.
- the image projection device further includes a confirmation packet receiving unit that receives the confirmation packet, and, when the confirmation packet is received, outputs a response to the reception of the confirmation packet. And response output means for performing the response. Accordingly, the PC transmits a confirmation packet to the projector side, and the projector receiving the confirmation packet responds, so that the user can know the location of the projector to which the PC screen is to be transmitted.
- the present invention not only can be realized as such an image transmission system, but also
- the PC displays the information regarding the communication status of the projector that is constantly delivered from the projector, so that the user can control the communication status between the PC and the projector. Can be grasped.
- the PC transmits a confirmation packet to the projector side, and the projector receiving the confirmation packet responds with a buzzer, an LED lamp, or the like, so that the user can know the projector to which the PC screen should be transmitted.
- FIG. 1 is a diagram showing an external configuration of an image transmission system according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing a hardware configuration of a PC and a projector constituting the image transmission system.
- FIG. 3 is a block diagram showing a functional configuration of a PC and a projector constituting the image transmission system according to the present embodiment.
- FIG. 4 is a diagram showing a state where screens of a plurality of PCs are projected on one projector.
- FIG. 5 is a diagram showing a state in which the screen of one PC is projected on the entire screen of the projector.
- FIG. 6 is a communication sequence diagram between a PC and a projector.
- FIG. 7 is a diagram for explaining a case in which communication is performed with a plurality of PC power projectors.
- FIG. 8 is a diagram for explaining a case where one PC communicates with a plurality of projectors.
- FIG. 9 is a diagram for explaining a case where a confirmation packet is transmitted to a PC power projector.
- FIG. 1 is a diagram showing an external configuration of an image transmission system according to the present embodiment.
- This image transmission system is a system in which a screen displayed on a display device of PC 100 is transmitted from PC 100 to projector 200, and projector 200 projects the received screen on screen 20.
- PC 100 is a wireless LAN.
- a wireless LAN card 10 in which a chip is stored is attached, so that an image signal is transmitted to projector 200 via a network.
- FIG. 2 is a block diagram showing a hardware configuration of PC 100 and projector 200 constituting the image transmission system according to the present embodiment.
- the PC 100 includes a CPU 101, a main memory 102, a storage device 103, a graphics chip 104, a VRAM 105, an output IF 106 to be output to a display 110, and input device power such as a keyboard 111 and a mouse 112.
- the projector 200 includes a CPU 201, a main memory 202, a storage device 203, a graphics chip 204, a resize LSI 205, a VRAM 206, a network IF 207, and an output device 208.
- FIG. 3 is a block diagram showing a functional configuration of a PC and a projector constituting the image transmission system according to the present embodiment.
- PC 300 includes a PC communication unit 301, a beacon analysis unit 302, and a display output unit 303, and projector 400 includes a projector communication unit 401, a state monitoring unit 402, a host ⁇ An ID assigning unit 403 and a response output unit 404 are provided.
- PC communication unit 301 transmits information regarding the communication state of projector 400 to projector 400.
- connection request packet for requesting connection to the projector 400
- communication status for requesting connection to the projector 400
- confirmation packet for matching
- the beacon analysis unit 302 is a processing unit that acquires and analyzes a beacon received by the PC communication unit 301, and is realized by the CPU 101, the main memory 102, and the like.
- the display output unit 303 is a processing unit that outputs the analysis result of the beacon analysis unit 302 to a display device, and is realized by the graphics chip 104 or the like.
- the projector communication unit 401 is a processing unit that transmits a beacon to the PC 300 and receives a connection request packet and the like from the PC 300, and is realized by the network IF 207 and the like.
- the state monitoring unit 402 is a processing unit that monitors the communication state of the projector 400 to generate a beacon, obtains a confirmation packet, and outputs a response signal to the response output unit 404. Is achieved.
- the host ID assigning unit 403 is a processing unit that assigns a host name and projector ID as identification information of the projector 400, and is realized by the CPU 201 and the like. For example, in the initial setting of the projector 400, the host ID assignment unit 403 receives an input of a host name from a user and assigns the input host name. Also, the host ID assigning unit 403 assigns a unique projector ID based on the MAC address or IP address assigned to the network IF 207 each time the projector 400 is started.
- the response output unit 404 is an alarm that operates when a response signal is obtained from the state monitoring unit 402, and is implemented by a buzzer, an LED lamp, or the like.
- the PC communication section 301 and the projector communication section 401 can communicate with one or more projectors 400 and one or more PCs 300, respectively.
- a split screen in which the projection screen is divided and the screens of a plurality of PCs are simultaneously projected, and the screen of one PC is projected on the entire screen of the projector Switching between full screen display and projection is possible.
- the projector 400 may be configured to temporally divide the entire screen of the projector and project the screens of a plurality of PCs. In this case, for example, the screens of a plurality of PCs are switched every predetermined time and projected on the entire screen of the projector, or the screens of a plurality of PCs are switched by operation from the PC and projected on the full screen of the projector. Or it is possible.
- FIG. 4 is a diagram showing a state where the screens of a plurality of PCs are projected on one projector.
- PCs 500, 500a, 500b, and 500c are each transmitted to one projector 600, and the PC image received by the projector 600 on the screen 20 is displayed.
- the surface is projected by dividing it into four parts.
- FIG. 5 is a diagram showing a state where the screen of one PC is projected on the entire screen of the projector.
- the display screen of PC 500 is displayed as a full screen display on projector 600 side.
- FIG. 6 is a communication sequence diagram between PC 300 and projector 400.
- the host 'ID assigning unit 403 sets a unique projector ID based on the MAC address @ IP address (S32). Note that the host name set at the initial setting stage of the projector 400 is the main memory.
- the state monitoring unit 402 starts monitoring the communication state (S
- the PC 300 that has received the beacon prays for the received beacon in the beacon analysis unit 302, and displays the communication state with the projector 400 via the display output unit 303 (S38).
- the PC 300 receiving the beacon similarly analyzes the beacon and updates the updated projector 4.
- the status of communication with 00 is displayed via the display output unit 303 (S46).
- Projector 400 transmits a beacon to each PC 300 at a predetermined interval T1 (for example, every one second) (S48), and constantly notifies each PC 300 of the communication state of projector 400.
- T1 for example, every one second
- FIG. 7 is a diagram for explaining a case where a plurality of PCs communicate with one projector.
- FIG. 7 a connection between one projector 400 and projector 400 is established, and The connection between the PC 300 being connected to the projector 400 and the projector 400 has been established!
- connection is established means that beacon transmission / reception is possible
- connection is not established means that beacon transmission / reception is not possible.
- connection means a state in which a PC screen can be transmitted to projector 400
- not connected means a state in which a PC screen cannot be transmitted to projector 400 immediately.
- launcher 71 in PC screen 70 is provided with communication status display section 72 for indicating the status of communication with projector 400. That is, the user of PC 300 can know that the PC screen can be transmitted to projector 400 by the display mode of communication status display section 72.
- the communication status display section 72a is provided on the launcher 71a in the PC screen 70a of the PC 300a, and the user of the PC 300a To know that the PC screen cannot be sent.
- a pattern is used as a display mode of the communication status display sections 72 and 72a (polka dot for establishing connection, cross for non-establishing connection), but various displays such as using colors or blinking are used. Embodiments can be used.
- the power of explaining two types of communication status, connection established and connection unestablished For example, (1) own PC is also transmitting the screen to the projector, (2) the projector Screen transmission possible, (3) Connection established Forced screen transmission not possible because another user is transmitting the screen to the projector, (4) Status established such as connection established,,, etc. in the above display mode It can also be attached.
- FIG. 8 is a diagram for explaining a case where one PC communicates with a plurality of projectors.
- FIG. 8 shows one PC 300 and a plurality of projectors 400 and 400a that can communicate with PC 300. That is, PC 300 is connected to projector 400 and And 400a power, respectively, to receive beacons.
- the beacons transmitted from projectors 400 and 400a include the host names and projector IDs assigned to the respective projectors. Judge whether it is a beacon transmitted from the projector of!
- PC 300 displays a list of the projectors that have transmitted the received beacon in communication status display window 81 in PC screen 80.
- the communication status display window 81 includes a connection destination field 82 for displaying a host name, an ID field 83 for displaying a projector ID, and a status field 84 for indicating a communication status of the projector.
- Status field 84 visually indicates the number of PCs connected to the projector.
- the projector 400a is assigned a host name of “Meeting Room 1”, a projector ID of “Proj6 19”, and is connected to any PC, and is in a standby state. This is shown in the communication status display window 81.
- the host name “Meeting Room 2” and the projector ID “Proj0377” are assigned to the projector 400, and the communication status display window 81 indicates that three PCs are being connected.
- the projector 400 counts the number of responses from the connected PC to the transmitted beacon, and uses the number of responses as the number of connected users in the communication status display window 81. Is shown. For example, if the PC is turned off, the PC will not respond to the beacon, and the number of connected PCs will decrease.
- connection may be made to the projector by periodically transmitting a packet to the connected PC power projector.
- the PC responds if the connection is established, and the number of PCs established after the connection is established may be shown in the communication status display window 81 as the number of connected users. You can receive the image and display the number of PCs.
- FIG. 9 is a diagram for explaining a case where a confirmation packet is transmitted to the PC power projector.
- FIG. 9 one PC 300, a PC screen is received from PC 300 and projected on screen 20 a, and projector 400 is in communication with PC 300! /, Projector 400. a is shown.
- PC 300 when PC 300 receives an operation of pressing connection confirmation button 92 included in launcher 91 in the PC screen, PC 300 transmits a confirmation packet to projector 400. Then, upon receiving the confirmation packet, the projector 400 responds to the confirmation packet by turning on the LED lamp 410 or sounding the buzzer 420. At this time, projector 400 may display a screen indicating that a response has been made, such as displaying the assigned projector ID on ID display section 93 of screen 20a.
- the PC 300 also accepts the designation of the desired projector as the projector list displayed in the communication status display window 81 shown in FIG. 8, and presses the connection confirmation button included in the communication status display window 81. By accepting the operation, the confirmation packet may be transmitted to the specified projector.
- the projector constantly distributes information on the communication state of the projector to a communicable PC, and transmits the information on the communication state of the projector distributed on the PC side. Since the information is displayed, the user can grasp the communication status between his / her PC and the projector.
- the projector that has received the confirmation packet responds with a buzzer, an LED lamp, or the like. You can know the projector to be used.
- the communication between the PC and the projector is performed by a wireless LAN, but may be performed by a wired LAN!
- the display device such as the plasma display panel described with the projector as the image projection device may be used.
- the image transmission system according to the present invention can be applied to a system for transmitting an image from a PC or the like as an image generation device to a projector or the like as an image projection device, and in particular, a presentation using a wireless projector or the like. It is suitable when performing.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020067006516A KR101078962B1 (ko) | 2004-03-10 | 2005-03-08 | 화상 전송 시스템 및 화상 전송 방법 |
JP2006519399A JP4960089B2 (ja) | 2004-03-10 | 2005-03-08 | 画像伝送システム |
US10/590,967 US7682028B2 (en) | 2004-03-10 | 2005-03-08 | Image transmission system and image transmission method |
EP05720223.6A EP1724967B1 (en) | 2004-03-10 | 2005-03-08 | Image transmission system and image transmission method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004068061 | 2004-03-10 | ||
JP2004-068061 | 2004-03-10 |
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WO2005088908A1 true WO2005088908A1 (ja) | 2005-09-22 |
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PCT/JP2005/003951 WO2005088908A1 (ja) | 2004-03-10 | 2005-03-08 | 画像伝送システムおよび画像伝送方法 |
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US (1) | US7682028B2 (ja) |
EP (1) | EP1724967B1 (ja) |
JP (1) | JP4960089B2 (ja) |
KR (1) | KR101078962B1 (ja) |
CN (1) | CN100471149C (ja) |
WO (1) | WO2005088908A1 (ja) |
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- 2005-03-08 WO PCT/JP2005/003951 patent/WO2005088908A1/ja not_active Application Discontinuation
- 2005-03-08 KR KR1020067006516A patent/KR101078962B1/ko not_active IP Right Cessation
- 2005-03-08 CN CNB2005800027376A patent/CN100471149C/zh active Active
- 2005-03-08 EP EP05720223.6A patent/EP1724967B1/en active Active
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JP2007108560A (ja) * | 2005-10-17 | 2007-04-26 | Casio Comput Co Ltd | 表示制御装置及び表示制御方法 |
JP2007170988A (ja) * | 2005-12-22 | 2007-07-05 | Keyence Corp | 検出器およびこれを用いた測定システム |
CN101102443B (zh) * | 2006-07-06 | 2010-07-14 | 精工爱普生株式会社 | 图像显示系统 |
CN101145998B (zh) * | 2006-09-11 | 2010-09-29 | 联想(北京)有限公司 | 建立无线投影网络的方法及网络 |
JP2008139607A (ja) * | 2006-12-04 | 2008-06-19 | Seiko Epson Corp | プロジェクタ、投写システムおよび通知方法 |
US8608318B2 (en) | 2009-11-13 | 2013-12-17 | Panasonic Corporation | Wireless projector apparatus and wireless LAN adapter |
JP2012118559A (ja) * | 2012-01-20 | 2012-06-21 | Seiko Epson Corp | 投写システムおよび通知方法 |
JP2013191986A (ja) * | 2012-03-13 | 2013-09-26 | Ricoh Co Ltd | 無線通信システム |
JP2014120090A (ja) * | 2012-12-19 | 2014-06-30 | Fujitsu Component Ltd | 切替装置及び情報システム |
JP2014013407A (ja) * | 2013-09-02 | 2014-01-23 | Seiko Epson Corp | 投写システムおよび通知方法 |
JP2018014082A (ja) * | 2016-07-06 | 2018-01-25 | 株式会社リコー | 情報処理システム、表示処理装置、表示処理方法、および、表示プログラム |
Also Published As
Publication number | Publication date |
---|---|
EP1724967A1 (en) | 2006-11-22 |
KR20060116191A (ko) | 2006-11-14 |
US20080158438A1 (en) | 2008-07-03 |
EP1724967B1 (en) | 2019-03-06 |
KR101078962B1 (ko) | 2011-11-01 |
CN1910865A (zh) | 2007-02-07 |
JP4960089B2 (ja) | 2012-06-27 |
EP1724967A4 (en) | 2013-01-16 |
US7682028B2 (en) | 2010-03-23 |
JPWO2005088908A1 (ja) | 2008-01-31 |
CN100471149C (zh) | 2009-03-18 |
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