CN104299546A - Head-up displayer and method for realizing same-source thereof - Google Patents
Head-up displayer and method for realizing same-source thereof Download PDFInfo
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- CN104299546A CN104299546A CN201310634973.6A CN201310634973A CN104299546A CN 104299546 A CN104299546 A CN 104299546A CN 201310634973 A CN201310634973 A CN 201310634973A CN 104299546 A CN104299546 A CN 104299546A
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Abstract
The invention relates to a head-up displayer and a method for realizing same-source thereof and belongs to the technical field of airborne display equipment. Through dividing X and Y coordinate data generated by a symbol generation module in the head-up displayer into two paths, wherein one path of data is converted, through an DA conversion circuit, into a deflection signal which, together with a brightness signal, is subjected to character display through a display driver module; and the other path of X and Y coordinate data, after being processed, is stored as recording pictures, the source of the picture data displayed in the head-up displayer is the same with that of the recorded picture data, and recording pictures of the head-up displayer are guaranteed to reflect the real states of the head-up displayer in real time.
Description
Technical field
The present invention relates to a kind of head-up display and realize the method for its homology, belong to airborne display devices technical field.
Background technology
Head-up display projects need the symbol of display in the visual field, dead ahead of driver exactly, make various information together with real outdoor scene information superposition, and these displaying symbols are generated by symbol generation module, amplify after process through driver module and send CRT pipe to show.
In early stage head-up display system, passenger cabin video camera is installed on above the control panel of head-up display dead ahead, consistent with head-up display optical axis.Recording picture under any state is exactly the picture that the head-up display that photographs of passenger cabin video camera superposes with outer what comes into a driver's physics, and the two is installed to correct by physics and ensures that precision is consistent.In current head-up display system, the installation site of passenger cabin video camera changes, and record picture is the picture after outer what comes into a driver's picture that passenger cabin video camera photographs superposes with head-up display character frames software.The two calculates fidelity by software, ensures that precision is consistent.The display frame of this framework head-up display is inconsistent with record picture source, causes record can not reflect head-up display real-time status really.
Summary of the invention
The object of this invention is to provide a kind of head-up display and realize the method for its homology, to solve current head-up display display frame and record picture source, inconsistent cause recording can not the real-time status of actual response display at ordinary times.
The present invention provides a kind of head-up display for solving the problems of the technologies described above, comprise the symbol generation module connected successively, driver module and CRT pipe, character is set in symbol generation module and produces logical block, it is characterized in that, homology logical block is also provided with in described symbol generation module, the output terminal that input end and the character of this homology logical block produce logical block is connected, the coordinate signal produced for producing logical block to character in symbol generation module processes, the output terminal of homology logical block is also connected with image card, for storing data after the process of homology logical block.
The coordinate signal received, using character writing clock as write clock, is packaged into the memory block of definition by described homology logical block when high-lightness signal is effective, and at the end of picture is write by image transmitting to image card.
Described symbol generation module adopts FPGA or CPLD to realize the generation of character logic and the process of same source data.
D/A change-over circuit is also provided with in described character generation module, the output terminal that input end and the character of this D/A change-over circuit produce logical block is connected, input end is connected with driver module, and the coordinate signal produced for character being produced logical block is converted to defection signal.
The present invention solves the problems of the technologies described above to additionally provide a kind of method realizing display and record the data of same source in head-up display, the method is divided into two-way by character being produced logic module generation coordinate data, a wherein road is made to carry out Charactes Display by driving head-up display together with high-lightness signal after D/A conversion, another road stores after homology process, as record picture data.
Described homology process refers to using character writing clock as write clock, is deposited in the memory block of definition when high-lightness signal is effective by coordinate data, at the end of picture is write, gives corresponding storage unit by image transmitting.
Described symbol generation module adopts FPGA or CPLD to realize the generation of character logic and the process of same source data.
The invention has the beneficial effects as follows: the present invention is by being divided into two-way by the X of symbol generation module generation in head-up display, Y-coordinate data, DA change-over circuit of leading up to generates defection signal, Charactes Display is carried out by driver module together with high-lightness signal, another road X, Y-coordinate data store after treatment, as record picture, thus the picture data realizing showing in head-up display is same source with the picture data recorded, ensure that the state of real-time, the real reflection head-up display of head-up display record picture.
Accompanying drawing explanation
Fig. 1 is the principle assumption diagram of head-up display of the present invention with source circuit.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
A kind of head-up display of the present invention is with the embodiment of source circuit
As shown in Figure 1, head-up display in the present embodiment comprises the symbol generation module, driver module, CRT pipe and the image card that connect successively with source circuit, wherein symbol generation module comprises vector generator and D/A circuit unit, vector generator comprises character and produces logical block and homology logical block, the output terminal that character produces logical block is connected with homology logical block with D/A circuit unit respectively, the output terminal of homology logical block is connected with image card by PCI_e bus, and the output terminal of D/A circuit unit to be managed with CRT by driver module and is connected.This principle of work with source circuit is as follows:
Character produces logical block for generation of X, Y-coordinate data, and the X that will produce, Y-coordinate data are divided into two-way, one tunnel sends D/A circuit unit to, another road sends homology logical block to, the X that D/A circuit unit will receive, Y-coordinate signal is converted to X, y deflection signal, inputting together with high-lightness after driver module drives process send CRT pipe to show, the coordinate signal on another road writes in the video memory of image card after the process of homology logical block, generate DVI video to show for head-up display grating for record and Pal video, homology logical block process time using character writing clock as write clock, state according to high-lightness signal processes the coordinate signal received, when high-lightness signal is effective, by the X received, Y-coordinate signal is packaged in the memory block of definition, after a secondary complete picture writes end, start transmission mark, by in the transmission mode write image card internal memory of display DMA according to this, so far image card completes symbol plotting.
A kind of embodiment realizing head-up display display and record the data of same source method of the present invention
Utilize the character in symbol generation module to produce logical block and generate 12 bit digital quantity X, Y position data, Jiang Yilu send DA change-over circuit to generate X and drive head-up display Charactes Display together with y deflection signal, cooperation high-lightness signal Z; Another road 12 bit digital quantity X, Y position data are write in the video memory of image card after the process of homology logical block, generates record picture.Wherein homology process refers to when a secondary picture starts to write, using character writing clock as write clock, high 10 bit digital quantity X when being 1 by high-lightness signal Z, Y position data are packaged into the memory block of definition, after a secondary complete picture writes end, start transmission mark, to show data block with after DMA transmission mode write graphics card internal memory, graphics card completes symbol plotting.Vector generator (realizing with FPGA or CPLD) in symbol generation module completes character logic and produces and same source data process.Present invention achieves display and the record same source of data in head-up display, ensure that head-up display record picture real-time, real reflection head-up display state.
Claims (7)
1. a head-up display, comprise symbol generation module, driver module and the CRT pipe connected successively, character is set in symbol generation module and produces logical block, it is characterized in that, homology logical block is also provided with in described symbol generation module, the output terminal that input end and the character of this homology logical block produce logical block is connected, the coordinate signal produced for producing logical block to character in symbol generation module processes, the output terminal of homology logical block is also connected with image card, for storing data after the process of homology logical block.
2. head-up display according to claim 1, it is characterized in that, the coordinate signal received, using character writing clock as write clock, is packaged into the memory block of definition by described homology logical block when high-lightness signal is effective, and at the end of picture is write by image transmitting to image card.
3. head-up display according to claim 2, is characterized in that, described symbol generation module adopts FPGA or CPLD to realize the generation of character logic and the process of same source data.
4. head-up display according to claim 2, it is characterized in that, D/A change-over circuit is also provided with in described character generation module, the output terminal that input end and the character of this D/A change-over circuit produce logical block is connected, input end is connected with driver module, and the coordinate signal produced for character being produced logical block is converted to defection signal.
5. one kind realizes display and the method recording the data of same source in head-up display, it is characterized in that, the method is divided into two-way by character being produced logic module generation coordinate data, a wherein road is made to carry out Charactes Display by driving head-up display together with high-lightness signal after D/A conversion, another road stores after homology process, as record picture data.
6. the method realizing display and record the data of same source in head-up display according to claim 5, it is characterized in that, described homology process refers to using character writing clock as write clock, when high-lightness signal is effective, coordinate data is deposited in the memory block of definition, at the end of picture is write, give corresponding storage unit by image transmitting.
7. the method realizing display and record data source homology in head-up display according to claim 6, it is characterized in that, described symbol generation module adopts FPGA or CPLD to realize the generation of character logic and the process of same source data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310634973.6A CN104299546B (en) | 2013-11-28 | 2013-11-28 | A kind of head-up display and realize its homologous method |
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| CN201310634973.6A CN104299546B (en) | 2013-11-28 | 2013-11-28 | A kind of head-up display and realize its homologous method |
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| CN104299546B CN104299546B (en) | 2018-01-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110609389A (en) * | 2019-10-11 | 2019-12-24 | 中国航空工业集团公司洛阳电光设备研究所 | Head-mounted display system of civil aircraft |
| CN112422769A (en) * | 2020-11-22 | 2021-02-26 | 中国航空工业集团公司洛阳电光设备研究所 | Head-up display for realizing synchronous recording control of characters and videos |
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| CN110609389A (en) * | 2019-10-11 | 2019-12-24 | 中国航空工业集团公司洛阳电光设备研究所 | Head-mounted display system of civil aircraft |
| CN112422769A (en) * | 2020-11-22 | 2021-02-26 | 中国航空工业集团公司洛阳电光设备研究所 | Head-up display for realizing synchronous recording control of characters and videos |
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| Publication number | Publication date |
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| CN104299546B (en) | 2018-01-02 |
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