CN104299542B - Head-up display and display delay control method - Google Patents
Head-up display and display delay control method Download PDFInfo
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- CN104299542B CN104299542B CN201310624428.9A CN201310624428A CN104299542B CN 104299542 B CN104299542 B CN 104299542B CN 201310624428 A CN201310624428 A CN 201310624428A CN 104299542 B CN104299542 B CN 104299542B
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Abstract
The invention relates to a head-up display and a display delay control method, and belongs to the technical field of airborne display equipment. FPGA logic design in a symbol generator module is used to replace a hardware delay circuit, and delayed display of the head-up display is realized by controlling overall backward shift and lagging edge extension of a brightness signal. By making use of high flexibility and stability of digital logic, the influence of temperature drift of an RC circuit is avoided, the character display smoothing effect of the head-up display is improved, and the quality of character display and the reliability of the product are improved.
Description
Technical field
The present invention relates to a kind of head up displays and display delayed control method, belong to airborne display devices technical field.
Background technology
Head up displays project the symbol needing display in the dead ahead visual field of driver exactly, make various information
Together with real outdoor scene information superposition, observe for driver and judge state of flight, so the symbol showing thereon must be clear
Clear, stable.The x defection signal of symbol generator module output, y defection signal, z high-lightness signal amplify through driver module
Drive crt pipe to light after process, character is shown on head up displays.
Wherein the x defection signal of symbol generator module output and y defection signal control character on head up displays crt pipe
Display location；Z high-lightness signal controls the display of head up displays character, and the corresponding character of signal high level shows, signal low level
Corresponding character blanking.Because symbol generator module is synchronism output x defection signal, y defection signal and z high-lightness signal, output
Processing speed is very fast, and driver module below and crt pipeline circle are slower to the response of x defection signal, y defection signal,
It is thus desirable to the character z high-lightness signal of output is carried out suitable delay process to synchronously arrive at crt pipe with defection signal.This portion
Divide delay circuit to realize on driver module, z brightness is controlled by the rc circuit of pulse-width regulated chip 54ls123 cooperation periphery
The pulse-width regulated of bright signal, reaches the effective cooperation and defection signal between.Different product needs repeatedly to adjust manually potentiometer
Satisfied character display effect is reached on head up displays, because rc circuit is due to having temperature drift, often results in character and go out
The phenomenons such as existing breakpoint, bright spot, discontinuous, not blanking, hangover, serious impact product stability.
Content of the invention
It is an object of the invention to provide a kind of head up displays and display delayed control method, to solve current head-up display
Device occur when being shown using the led to character of the delay control circuit with rc in time delay display control end points, bright spot, discontinuous,
Not blanking or tailing problem.
The present invention is to solve above-mentioned technical problem to additionally provide a kind of head up displays, occurs including the symbol being sequentially connected
Device module, driver module and crt pipe, described symbol generator module includes character and produces logical block and high-lightness time delay control
Clamp dog, described high-lightness delays time to control block is used for high-lightness signal being carried out move after entirety and tailing edge extension, so that high-lightness signal is carried out
Delay process is to synchronously arrive at crt pipe with defection signal.
Described high-lightness signal lag scope is adjusted between 0～t us, and t is freely arranged.
Described character produces the high-lightness signal that logical block is used for producing defection signal and synchronizing.
Described character produces defection signal produced by logical block, through da transducer, digital quantity is converted into analogue signal
Amplify output, to control character display location on head up displays crt pipe.
The present invention is to solve above-mentioned technical problem to additionally provide a kind of head up displays display delayed control method, this time delay
Control method is moved after controlling high-lightness signal to carry out entirety and tailing edge extension is realized.
Described high-lightness signal lag scope is adjusted between 0～t us, and t is freely arranged.
The time delay of described high-lightness signal is produced by the high-lightness delays time to control block in symbol generator module.
Described high-lightness signal is used for controlling the display of head up displays character, is produced by the character in symbol generator module
Raw logic module produces, and this character produces logical block and produces defection signal simultaneously.
The invention has the beneficial effects as follows: the present invention utilizes fpga logical design in symbol generator module to replace hardware time delay
Circuit, is moved and tailing edge extension after controlling high-lightness signal entirety, and the time delay realizing head up displays shows, the present invention utilizes number
The good stability of the motility of word logic solves rc circuit temperature drift effect, improves head up displays character and shows smooth effect
Really, thus improving the reliability of symbol display quality and product.
Brief description
Fig. 1 is that head up displays character of the present invention generates the structural representation driving；
Fig. 2 is high-lightness delays time to control time diagram；
Fig. 3 is that in the embodiment of the present invention, high-lightness adjusts uncomfortable design sketch；
Fig. 4 is suitable high-lightness regulating effect figure in the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is further described.
A kind of embodiment of the head up displays of the present invention
As shown in figure 1, the head up displays of the present invention mainly include symbol generator module, the display driving being sequentially connected
Module and crt pipe, symbol generator module includes character and produces logical block and high-lightness delays time to control block, and character produces logical block and uses
Produce x defection signal, y defection signal and z high-lightness signal in synchronous, above-mentioned signal is through driver module processing and amplifying rear-guard
Dynamic crt pipe is lighted, and shows character on head up displays, and in symbol generator module, character produces logical block and produces parallel two
Through da transducer, digital quantity is converted into analogue signal after x, y deflection coordinate digital quantity of 12, road and amplifies output, control is looked squarely aobvious
Show character display location on device crt pipe, the character in symbol generator module produces logical block and synchronously produces the control of z high-lightness signal
The display of head up displays character, the corresponding character of signal high level shows, signal low level corresponds to character blanking, sends out using vector
High-lightness delays time to control logic in raw device carries out to high-lightness signal moving after entirety and tailing edge extension.
The time delay display control of the head up displays of the present invention utilizes fpga logical design in symbol generator module to replace
Hardware delay circuit, cooperation software design patterns can flexibly control head up displays character display effect, this head-up display implement body
Control process is as follows:
1. the character in the vector generator of stroke type symbol generator is produced logic module and produce parallel two-way x, y
Deflection coordinate digital quantity is converted into analogue signal and amplifies output, controls CSD on head up displays crt pipe.
2. utilize character in vector generator to produce logic module and synchronously produce z high-lightness signal control head up displays character
Display, signal high level corresponding character show, the corresponding character blanking of signal low level.
3. z high-lightness signal is carried out move and tailing edge after entirety using the high-lightness delays time to control logic module in vector generator
Extension, high-lightness signal lag scope is adjusted between 0～t us, and t is freely arranged.
A kind of embodiment of the head up displays display delayed control method of the present invention
The head up displays display delayed control method of the present invention is moved and tailing edge after controlling high-lightness signal to carry out entirety
Extension is realized.High-lightness delays time to control sequential in the present embodiment is as shown in Fig. 2 as a example the symbol generator module shown in by Fig. 1
Illustrate, the high-lightness time delay front signal of 21 expression vector generator outputs in Fig. 2,22 represent the brightness of vector generator output
Signal after bright time delay.Character writing clock frequency in the present embodiment is 10mhz, and former vector generator exports z high-lightness signal
Width is hlt, moves and will high-lightness signal elapse backward after entirety, totally 32 grades, every grade of 100ns, and the 0th grade is 0ns, and the 31st grade is
3.1us, that is, z high-lightness signal can integrally backward time delay tf be 0～3.1us, tailing edge extension will z high-lightness signal tailing edge (decline
Edge) elapse backward, the width of prolongation z high-lightness signal significant level, totally 32 grades, every grade of 100ns, the 0th grade is 0ns, and the 31st grade is
3.1us, that is, the effectively comment of z high-lightness signal can extend tb backward is 0～3.1us, moves and the series of tailing edge extension can lead to after entirety
Cross particular command position setting in application software.
As shown in Figure 3 and Figure 4, head up displays display picture sectional drawing contrast, circled is at display difference, does not pass through
The effect of high-lightness delays time to control is shown in Fig. 3, occurs in that including character bright spot phenomenon a, character conditions of streaking b and character breakpoint phenomenon c；
Through high-lightness delays time to control effect as shown in figure 4, improve after display character aa, bb and cc character substantially round and smooth and uniform.
Therefore the present invention can improve head up displays character display smooth effect, thus improving the reliability of symbol display quality and product
Property.
, only with illustrating and not to limit technical scheme, different instances parameter value is different for above example, although
With reference to above-described embodiment, the present invention is described in detail, it will be understood by those within the art that, still can be right
The present invention modifies or equivalent, and any modification without departing from the spirit and scope of the present invention or local are replaced,
It all should be covered in the middle of scope of the presently claimed invention.
Claims (8)
1. a kind of head up displays, including the symbol generator module being sequentially connected, driver module and crt pipe, its feature
It is, described symbol generator module includes character and produces logical block and high-lightness delays time to control block, described high-lightness time delay control
Clamp dog is used for high-lightness signal being carried out move after entirety and tailing edge extension, makes high-lightness signal carry out delay process with same with defection signal
Step reaches crt pipe.
2. head up displays according to claim 1 are it is characterised in that described high-lightness signal lag scope is in 0～t
Adjust between us, t is freely arranged.
3. head up displays according to claim 1 are it is characterised in that described character generation logical block is used for producing partially
Rotaring signal and the high-lightness signal synchronizing.
4. head up displays according to claim 2 are it is characterised in that described character produces produced by logical block partially
Digital quantity is converted into analogue signal through da transducer and amplifies output by rotaring signal, to control character on head up displays crt pipe to show
Show position.
5. a kind of display delayed control method of head up displays described in employing claim 1 is it is characterised in that this delays time to control
Method is moved after controlling high-lightness signal to carry out entirety and tailing edge extension is realized.
6. head up displays delay control method according to claim 5 is it is characterised in that described high-lightness signal lag
Scope is adjusted between 0～t us, and t is freely arranged.
7. head up displays delay control method according to claim 6 is it is characterised in that the time delay of described high-lightness signal
Produced by the high-lightness delays time to control block in symbol generator module.
8. head up displays display delayed control method according to claim 7 is it is characterised in that described high-lightness signal
For controlling the display of head up displays character, logic module is produced by the character in symbol generator module and produces, this character
Produce logical block and produce defection signal simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310624428.9A CN104299542B (en) | 2013-11-28 | 2013-11-28 | Head-up display and display delay control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310624428.9A CN104299542B (en) | 2013-11-28 | 2013-11-28 | Head-up display and display delay control method |
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| Publication Number | Publication Date |
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| CN104299542A CN104299542A (en) | 2015-01-21 |
| CN104299542B true CN104299542B (en) | 2017-02-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60179715A (en) * | 1984-02-28 | 1985-09-13 | Nec Corp | Head-up display device |
| US5214413A (en) * | 1987-06-23 | 1993-05-25 | Nissan Motor Company, Limited | Head-up display apparatus for vehicular display |
| JPH09274462A (en) * | 1996-04-03 | 1997-10-21 | Shimadzu Corp | Head-up display device |
| CN102968949A (en) * | 2012-10-23 | 2013-03-13 | 中国航空工业集团公司洛阳电光设备研究所 | Stroke type symbol generator and method for improving display effect of stroke type symbol generator |
-
2013
- 2013-11-28 CN CN201310624428.9A patent/CN104299542B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60179715A (en) * | 1984-02-28 | 1985-09-13 | Nec Corp | Head-up display device |
| US5214413A (en) * | 1987-06-23 | 1993-05-25 | Nissan Motor Company, Limited | Head-up display apparatus for vehicular display |
| JPH09274462A (en) * | 1996-04-03 | 1997-10-21 | Shimadzu Corp | Head-up display device |
| CN102968949A (en) * | 2012-10-23 | 2013-03-13 | 中国航空工业集团公司洛阳电光设备研究所 | Stroke type symbol generator and method for improving display effect of stroke type symbol generator |
Non-Patent Citations (1)
| Title |
|---|
| 平视显示器的设计;杨秀芝;《福州大学学报（自然科学版）》;20000831;第28卷(第4期);29-32 * |
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| CN104299542A (en) | 2015-01-21 |
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