CN101844517B - Whole-painting automobile instrument system and implement method - Google Patents
Whole-painting automobile instrument system and implement method Download PDFInfo
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Abstract
The invention discloses a whole-painting automobile instrument system and an implement method. The system comprises a soft processer core A, a multi-path memory controller, a video frame cache controller, a video storage space selector and a display controller, wherein the soft processer core A is used for describing display image data corresponding to an automobile parameter according to an input automobile parameter; the multi-path memory controller is used for applying and processing multiple paths; the video frame cache controller is used for displaying the switching control of a buffer area; the video storage space selector is used for reading the display image data, mixing image data by a mixing and stack algorithm and selecting the video storage space; and the display controller is used for displaying images in real time according to the mixed image data. The implement method comprises the following steps: S1, according to the input automobile parameter, describing the display image data corresponding to the automobile parameter; S2, reading the display image data, and mixing the display image data by the mixing and stack algorithm; and S3, displaying the image in real time according to the mixed image data.
Description
Technical field
The present invention relates to the auto meter field, particularly a kind of whole-painting automobile instrument and implementation method.
Background technology
At present auto meter mainly contains two kinds of technology, and the one, traditional simulation shows that it is also larger to use share in Chinese market at present, but great majority are used in the vehicle introduced early stage or lorry, minicar is first-class; The 2nd, digital instrument at present and the joint or wholly foreign-owned enterprise of China, some digital instruments occur.Digital instrument adopts the stepping motor structure form, the analog or digital signal of all the sensors all changes into the digital signal of Driving Stepping Motor, after being handled by central processor CPU, be transported to step motor type indicating instrument separately and make it work driving signal.
Domestic employed meter for car is divided into digital watch and simulation table substantially at present, but is which kind of instrument all exists several problems:
1, the pointer of instrument all is the structure of machinery. owing to be the structure of machinery, so often mechanical breakdown can occur, cause instrument can accurately not express present running information.
2, the dial plate pattern of instrument can not change. and the impact of being produced, the image of instrument are in case after determining and producing, want to change image, and the expense that spend can be very high.
3, often can only be suitable for and a vehicle with a instrument.In a single day a instrument is produced basically can only corresponding a vehicle, if want applicable and other vehicles, needs so again layout, physical construction, and then die sinking is produced.
In recent years, along with the CAN bus is popularized, existing numerous automobile vendors integrate various sensors, the control module of automobile, make the in-use performances such as the discharging of automobile, energy-conservation, safety and comfort require to improve constantly, simultaneously, along with the development of large-scale integration circuit technology, can the millions of up to ten million gate circuits of integrated as many as in the single-chip, the function that needs a lot of chips just can finish before can realizing in a chip has greatly improved reliability, has reduced cost; The development technique of the embedded software of many CPU is ripe simultaneously, application in a lot of fields has all obtained success, like this, solved technically the high reliability of restriction auto meter technology upgrading and the bottleneck of cost, made the digital graphics instrument become possibility as the display platform of the various information of automobile.But at present automobile vendor is also few for the work of auto meter, realizes that really the auto meter that the digital graphics of commercial prod shows is also few, more only is to show as auxiliary, shows some Word messages.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of whole-painting automobile instrument system.
Whole-painting automobile instrument system provided by the invention comprises: the soft processor nuclear A that is used for drawing according to the automobile parameter of input the display image data corresponding with this automobile parameter; Be used for multi-channel and use the multichannel memory controller of processing; The frame of video cache controller that is used for the display buffer switching controls; Be used for reading this display image data, utilize mixing, superposition algorithm blended image data, and select the video storage space finder in video storage space; And for the display control switch that shows in real time image according to blended image data; Described soft processor nuclear A, multichannel memory controller, frame of video cache controller, display control switch and video storage space finder connect successively.
According to whole-painting automobile instrument system one optimal technical scheme provided by the invention be: described whole-painting automobile instrument system further comprises: some soft processor nuclear B for draw the display image data corresponding with this automobile parameter according to the automobile parameter of input; Described some soft processor nuclear B are connected with program operation CPU processor A and multichannel memory controller respectively.
According to whole-painting automobile instrument system one optimal technical scheme provided by the invention be: described whole-painting automobile instrument system further comprises: the LCD that is used for display image data; Be used for the parallel image data are converted to the modular converter of the receivable Low Voltage Differential Signal of LCD; Reach the clock supplying module that is used for display control switch and modular converter, this clock supplying module sends 7 times to the clock of display control switch to modular converter; Described display control switch, modular converter and LCD connect successively, and described clock supplying module is connected with modular converter with display control switch respectively.
According to whole-painting automobile instrument system one optimal technical scheme provided by the invention be: described soft processor nuclear A comprises: program operation CPU processor A, local data bus controller A (202), local instruction bus controller A and the embedded RAM memory device A of FPGA; Described RAM memory device A respectively with local data bus controller A be connected instruction bus controller A and be connected; Described local data bus controller A be connected instruction bus controller A and move the CPU processor A by Data Cache bus A_DLMB and Instruction Cache bus A_ILMB with program respectively and be connected; Described program operation CPU processor A is connected with the quick one way link B_A_FSL that treater local bus A_PLB, cpu instruction Cache bus A_IXCL, cpu data Cache bus A_DXCL, program operation CPU processor A move the CPU processor A to quick one way link A_B_FSL and the program operation CPU processor B of program operation CPU processor B to program respectively.
According to whole-painting automobile instrument system one optimal technical scheme provided by the invention be: described soft processor nuclear B comprises: program operation CPU processor B, local data bus controller B (302), local instruction bus controller B and the embedded RAM memory device B of FPGA; Described RAM memory device B respectively with local data bus controller B be connected instruction bus controller B and be connected; Described local data bus controller B be connected instruction bus controller B and be connected ILMB and program with the Instruction Cache bus B by Data Cache bus B _ DLMB respectively and move the CPU processor B and be connected; Described program operation CPU processor B is connected to the quick one way link A_B_FSL that quick one way link B_A_FSL and the program operation CPU processor A of program operation CPU processor A moves the CPU processor B to program with treater local bus B_PLB, cpu instruction Cache bus B _ IXCL, cpu data Cache bus B _ DXCL, program operation CPU processor B respectively.
According to whole-painting automobile instrument system one optimal technical scheme provided by the invention be: described multichannel memory controller comprises: SDRAM memory device on multi-interface memory controller and the plate; This SDRAM memory device is connected with the multi-interface memory controller, and this multi-interface memory controller is connected with NPI interface, treater local bus B_PLB, cpu instruction Cache bus B _ IXCL, cpu data Cache bus B _ DXCL, treater local bus A_PLB, cpu instruction Cache bus A_IXCL and cpu data Cache bus A_DXCL respectively.
According to whole-painting automobile instrument system one optimal technical scheme provided by the invention be: described display control switch is connected with video data bus VDB, frame of video cache controller bus VFBCB, clock signal clk 1 and frame count GPIO signal Frame Count respectively; Described display control switch is determined current viewing area by frame count GPIO signal Frame Count.
According to whole-painting automobile instrument system one optimal technical scheme provided by the invention be: described video storage space finder is connected with frame count GPIO signal Frame Count with treater local bus A_PLB respectively.
The present invention also provides a kind of whole-painting automobile instrument implementation method, may further comprise the steps: the first step: the automobile parameter according to input is drawn the display image data corresponding with this automobile parameter; Second step: read this display image data, and utilize mixing, superposition algorithm blended image data; The 3rd step. show in real time image according to blended image data.
According to whole-painting automobile instrument implementation method one optimal technical scheme provided by the invention be: the described first step comprises following substep: at first, soft processor nuclear B waits for rotating speed, turns to data; Then, soft processor nuclear A obtains data, comprises rotating speed, water temperature, and oil mass turns to data; Secondly, soft processor nuclear A sends rotating speed to soft processor nuclear B, turns to data; Again, soft processor nuclear A refresh rate, water temperature, oil mass image; Then, soft processor nuclear B refreshes rotating speed, turns to image; Afterwards, soft processor nuclear A waits for that soft processor nuclear B finishes; At last, soft processor nuclear B sends to refresh and finishes data.
According to whole-painting automobile instrument implementation method one optimal technical scheme provided by the invention be: the described process of drawing is specific as follows: at first, read background image; Secondly, the zone that needs renewal with the background image drawing; Again, read foreground image; At last, the mixed foreground image of stack and background image.
According to whole-painting automobile instrument implementation method one optimal technical scheme provided by the invention be: described second step comprises following substep: at first, soft processor nuclear A and soft processor nuclear B describe the display buffer; Secondly, video storage space finder switches the display buffer; At last, display control switch control display data.
According to whole-painting automobile instrument implementation method one optimal technical scheme provided by the invention be: video storage space finder switches the display buffer concrete steps and is: at first, soft processor nuclear A revises the controlling valu of video storage space finder; Then, video storage space finder sends order to display control switch according to controlling valu by frame count GPIO signal.
According to whole-painting automobile instrument implementation method one optimal technical scheme provided by the invention be: described the 3rd step comprises following substep: at first, display control switch is by multichannel memory controller reading displayed buffer data; Secondly, display control switch produces liquid crystal control sequential; At last, display control switch is controlled sequential to liquid crystal display LCD transmitting display data according to liquid crystal.
Useful technique effect of the present invention is: whole-painting automobile instrument system of the present invention by a plurality of soft processors examine, the module such as multichannel memory controller, frame of video cache controller, display control switch, video storage space finder realized whole whole-painting automobile instrument system, this system is total digitalization, thereby realized full drawing Presentation Function, realized that really the digital graphics of commercial prod shows.
Description of drawings
Fig. 1 is the frame diagram of whole-painting automobile instrument system of the present invention;
Fig. 2 is the soft processor nuclear A-Frame figure of whole-painting automobile instrument system of the present invention;
Fig. 3 is the soft processor nuclear B frame diagram of whole-painting automobile instrument system of the present invention;
Fig. 4 is the multichannel memory controller frame figure of whole-painting automobile instrument system of the present invention;
Fig. 5 is the display control switch frame diagram of whole-painting automobile instrument system of the present invention;
Fig. 6 is the video storage space finder frame diagram of whole-painting automobile instrument system of the present invention;
Fig. 7 is whole-painting automobile instrument implementation method overview flow chart of the present invention;
Fig. 8 is whole-painting automobile instrument implementation method step S1 diagram of circuit of the present invention;
Fig. 9 is whole-painting automobile instrument implementation method step S1 sequential chart of the present invention;
Figure 10 is that whole-painting automobile instrument implementation method of the present invention is drawn the procedure module block diagram;
Figure 11 is that whole-painting automobile instrument implementation method of the present invention is drawn diagram of circuit;
Figure 12 is whole-painting automobile instrument implementation method step S2 diagram of circuit of the present invention;
Figure 13 is whole-painting automobile instrument implementation method step S22 diagram of circuit of the present invention;
Figure 14 is whole-painting automobile instrument implementation method step S3 diagram of circuit of the present invention.
The specific embodiment
Below in conjunction with drawings and the specific embodiments the present invention is elaborated.
Please refer to Fig. 1 and table 1, the whole-painting automobile instrument system of present embodiment comprises: the soft processor nuclear A101 that is used for drawing according to the automobile parameter of input the display image data corresponding with this automobile parameter; Be used for multi-channel and use the multichannel memory controller 102 of processing; The frame of video cache controller 103 that is used for the display buffer switching controls; Be used for reading this display image data, utilize mixing, superposition algorithm blended image data, and select the video storage space finder 105 in video storage space; And for the display control switch 104 that shows in real time image according to blended image data; Some soft processor nuclear B106 for draw the display image data corresponding with this automobile parameter according to the automobile parameter of input; The LCD109 that is used for display image data; Be used for the parallel image data are converted to the modular converter 108 of the receivable Low Voltage Differential Signal of LCD109; Reach the clock supplying module 107 that is used for display control switch 104 and modular converter 108.
Described soft processor nuclear A101, multichannel memory controller 102, frame of video cache controller 103, display control switch 104 and video storage space finder 105 connect successively; Described some soft processor nuclear B106 are connected with program operation CPU processor A 101 and multichannel memory controller 102 respectively; Described display control switch 104, modular converter 108 and LCD109 connect successively, and described clock supplying module 107 is connected with modular converter with display control switch 104 respectively and is connected.
Table 1
Please refer to Fig. 2 and table 2, described soft processor nuclear A comprises: program operation CPU processor A 201, local data bus controller A202, local instruction bus controller A203 and the embedded RAM memory device A204 of FPGA; Described RAM memory device A204 respectively with local data bus controller A202 be connected instruction bus controller A203 and be connected; Described local data bus controller A202 be connected instruction bus controller A203 and move CPU processor A 201 by Data Cache bus A_DLMB and Instruction Cache bus A_ILMB with program respectively and be connected; Described program operation CPU processor A 201 is connected with the quick one way link B_A_FSL that treater local bus A_PLB, cpu instruction Cache bus A_IXCL, cpu data Cache bus A_DXCL, program operation CPU processor A 201 move CPU processor A 201 to quick one way link A_B_FSL and the program operation CPU processor B 301 of program operation CPU processor B 301 to program respectively.
Table 2
Please refer to Fig. 3 and table 3, described soft processor nuclear B comprises: program operation CPU processor B 301, local data bus controller B302, local instruction bus controller B303 and the embedded RAM memory device B304 of FPGA; Described RAM memory device B304 respectively with local data bus controller B302 be connected instruction bus controller B303 and be connected; Described local data bus controller B302 be connected instruction bus controller B303 and be connected ILMB and program with the Instruction Cache bus B by Data Cache bus B _ DLMB respectively and move CPU processor B 301 and be connected; Described program operation CPU processor B 301 is connected to the quick one way link A_B_FSL that quick one way link B_A_FSL and the program operation CPU processor A 201 of program operation CPU processor A 201 moves CPU processor B 301 to program with treater local bus B_PLB, cpu instruction Cache bus B _ IXCL, cpu data Cache bus B _ DXCL, program operation CPU processor B 301 respectively.
Table 3
Please refer to Fig. 4 and table 4, described multichannel memory controller 102 comprises: SDRAM memory device 402 on multi-interface memory controller 401 and the plate; This SDRAM memory device 402 is connected with multi-interface memory controller 401, and this multi-interface memory controller 401 is connected with NPI interface, treater local bus B_PLB, cpu instruction Cache bus B _ IXCL, cpu data Cache bus B _ DXCL, treater local bus A_PLB, cpu instruction Cache bus A_IXCL and cpu data Cache bus A_DXCL respectively.
| NO | Title | Describe |
| 1 | MPMC | The |
| 2 | DDR SDRAM | SDRAM memory device on the |
| 3 | NPI | The NPI interface of MPMC connects the VFBC |
| 4 | B_PLB | Treater local bus B |
| 5 | B_IXCL | Cpu instruction Cache bus |
| 6 | B_DXCL | Cpu data Cache bus |
| 7 | A_PLB | Treater local bus A |
| 8 | A_IXCL | Cpu instruction Cache bus |
| 9 | A_DXCL | Cpu data Cache bus |
Table 4
Please refer to Fig. 5 and table 5, described display control switch 104 is connected with video data bus VDB, frame of video cache controller bus VFBCB, clock signal clk 1 and frame count GPIO signal Frame Count respectively; Described display control switch 104 is determined current viewing area by frame count GPIO signal FrameCount.
Table 5
Please refer to Fig. 6 and table 6, described video storage space finder 105 is connected with frame count GPIO signal Frame Count with treater local bus A_PLB respectively.
Table 6
Please refer to Fig. 7, utilize the method for the whole-painting automobile instrument system realization whole-painting automobile instrument of present embodiment, may further comprise the steps: S1. draws the display image data corresponding with this automobile parameter according to the automobile parameter of input; S2. read this display image data, and utilize mixing, superposition algorithm blended image data; S3. show in real time image according to blended image data.
Please refer to Fig. 8 to Figure 10 and table 7, described step S1 comprises following substep: S11. soft processor nuclear B waits for rotating speed, turns to data; S12. soft processor nuclear A obtains data, comprises rotating speed, water temperature, and oil mass turns to data; S13. soft processor nuclear A sends rotating speed to soft processor nuclear B, turns to data; S14. soft processor is examined A refresh rate, water temperature, oil mass image; S15. soft processor nuclear B refreshes rotating speed, turns to image; S16. soft processor nuclear A waits for that soft processor nuclear B finishes; S17. soft processor nuclear B sends to refresh and finishes data.
Table 7
Please refer to Figure 11, the described process of drawing is specific as follows: (1) DisplayControllerA and DisplayControllerB read background image; (2) DisplayControllerA and DisplayControllerB need the zone of renewal with the background image drawing; (3) DisplayControllerA and DisplayControllerB read foreground image; (4) the mixed foreground image of DisplayControllerA and DisplayControllerB stack and background image.
Please refer to Figure 12, described step S2 comprises following substep: S21. soft processor nuclear A and soft processor nuclear B describe the display buffer; S22. video storage space finder switches the display buffer; S23. display control switch control display data.
Please refer to Figure 13, described step S22 comprises following substep: S221. soft processor nuclear A revises the controlling valu of video storage space finder; S222. video storage space finder sends order to display control switch according to controlling valu by frame count GPIO signal.
Please refer to Figure 14, described step S3 comprises following substep: the S31. display control switch is by multichannel memory controller reading displayed buffer data; S32. display control switch produces liquid crystal control sequential; S33. display control switch is controlled sequential to liquid crystal display LCD transmitting display data according to liquid crystal.
Above content is the further description of the present invention being done in conjunction with concrete optimal technical scheme, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (13)
1. a whole-painting automobile instrument system is characterized in that, described whole-painting automobile instrument system comprises: the soft processor nuclear A (101) that is used for drawing according to the automobile parameter of input the display image data corresponding with this automobile parameter; Be used for multi-channel and use the multichannel memory controller (102) of processing; The frame of video cache controller (103) that is used for the display buffer switching controls; Be used for reading this display image data, utilize mixing, superposition algorithm blended image data, and select the video storage space finder (105) in video storage space; And for the display control switch (104) that shows in real time image according to blended image data; Described soft processor nuclear A (101), multichannel memory controller (102), frame of video cache controller (103), display control switch (104) and video storage space finder (105) connect successively.
2. whole-painting automobile instrument system according to claim 1, it is characterized in that described whole-painting automobile instrument system further comprises: some soft processor nuclear B (106) for draw the display image data corresponding with this automobile parameter according to the automobile parameter of input; Described some soft processor nuclear B (106) are connected with program operation CPU processor A (101) and multichannel memory controller (102) respectively.
3. whole-painting automobile instrument system according to claim 1 and 2 is characterized in that, described whole-painting automobile instrument system further comprises: the LCD (109) that is used for display image data; Be used for the parallel image data are converted to the modular converter (108) of the receivable Low Voltage Differential Signal of LCD (109); Reach the clock supplying module (107) that is used for display control switch (104) and modular converter (108), this clock supplying module (107) sends 7 times to the clock of display control switch (104) to modular converter (108); Described display control switch (104), modular converter (108) and LCD (109) connect successively, and described clock supplying module (107) is connected 108 with display control switch (104) with modular converter respectively) be connected.
4. whole-painting automobile instrument system according to claim 3, it is characterized in that described soft processor nuclear A comprises: program operation CPU processor A (201), local data bus controller A (202), local instruction bus controller A (203) and the embedded RAM memory device A (204) of FPGA; Described RAM memory device A (204) respectively with local data bus controller A (202) be connected instruction bus controller A (203) and be connected; Described local data bus controller A (202) be connected instruction bus controller A (203) and move CPU processor A (201) by Data Cache bus A_DLMB and Instruction Cache bus A_ILMB with program respectively and be connected; Described program operation CPU processor A (201) is connected with the quick one way link B_A_FSL that treater local bus A_PLB, cpu instruction Cache bus A_IXCL, cpu data Cache bus A_DXCL, program operation CPU processor A (201) move CPU processor A (201) to quick one way link A_B_FSL and the program operation CPU processor B (301) of program operation CPU processor B (301) to program respectively.
5. whole-painting automobile instrument system according to claim 3, it is characterized in that described soft processor nuclear B comprises: program operation CPU processor B (301), local data bus controller B (302), local instruction bus controller B (303) and the embedded RAM memory device B (304) of FPGA; Described RAM memory device B (304) respectively with local data bus controller B (302) be connected instruction bus controller B (303) and be connected; Described local data bus controller B (302) be connected instruction bus controller B (303) and be connected ILMB and program with the Instruction Cache bus B by Data Cache bus B _ DLMB respectively and move CPU processor B (301) and be connected; Described program operation CPU processor B (301) is connected to the quick one way link A_B_FSL that quick one way link B_A_FSL and the program operation CPU processor A (201) of program operation CPU processor A (201) moves CPU processor B (301) to program with treater local bus B_PLB, cpu instruction Cache bus B _ IXCL, cpu data Cache bus B _ DXCL, program operation CPU processor B (301) respectively.
6. whole-painting automobile instrument system according to claim 3 is characterized in that, described multichannel memory controller (102) comprising: SDRAM memory device (402) on multi-interface memory controller (401) and the plate; This SDRAM memory device (402) is connected with multi-interface memory controller (401), and this multi-interface memory controller (401) is connected with NPI interface, treater local bus B_PLB, cpu instruction Cache bus B _ IXCL, cpu data Cache bus B _ DXCL, treater local bus A_PLB, cpu instruction Cache bus A_IXCL and cpu data Cache bus A_DXCL respectively.
7. whole-painting automobile instrument system according to claim 3, it is characterized in that described display control switch (104) is connected with video data bus VDB, frame of video cache controller bus VFBCB, clock signal clk 1 and frame count GPIO signal Frame Count respectively; Described display control switch (104) is determined current viewing area by frame count GPIO signal Frame Count.
8. whole-painting automobile instrument system according to claim 3 is characterized in that, described video storage space finder (105) is connected with frame count GPIO signal Frame Count with treater local bus A_PLB respectively.
9. whole-painting automobile instrument implementation method may further comprise the steps:
S1. draw the display image data corresponding with this automobile parameter according to the automobile parameter of input;
S2. read this display image data, and utilize mixing, superposition algorithm blended image data;
S3. show in real time image according to blended image data;
Described step S1 comprises following substep:
S11. soft processor nuclear B waits for rotating speed, turns to data;
S12. soft processor nuclear A obtains data, comprises rotating speed, water temperature, and oil mass turns to data;
S13. soft processor nuclear A sends rotating speed to soft processor nuclear B, turns to data;
S14. soft processor is examined A refresh rate, water temperature, oil mass image;
S15. soft processor nuclear B refreshes rotating speed, turns to image;
S16. soft processor nuclear A waits for that soft processor nuclear B finishes;
S17. soft processor nuclear B sends to refresh and finishes data.
10. whole-painting automobile instrument implementation method according to claim 9 is characterized in that, the described process of drawing is specific as follows:
(1) soft processor nuclear A and soft processor nuclear B read background image;
(2) soft processor nuclear A and soft processor nuclear B need the zone of renewal with the background image drawing;
(3) soft processor nuclear A and soft processor nuclear B read foreground image;
(4) soft processor nuclear A and the mixed foreground image of soft processor nuclear B stack and background image.
11. whole-painting automobile instrument implementation method according to claim 9 is characterized in that, described step S2 comprises following substep:
S21. soft processor nuclear A and soft processor nuclear B describe the display buffer;
S22. video storage space finder switches the display buffer;
S23. display control switch control display data.
12. whole-painting automobile instrument implementation method according to claim 11 is characterized in that, described step S22 comprises following substep:
S221. soft processor nuclear A revises the controlling valu of video storage space finder;
S222. video storage space finder sends order to display control switch according to controlling valu by frame count GPIO signal.
13. whole-painting automobile instrument implementation method according to claim 10 is characterized in that, described step S3 comprises following substep:
S31. display control switch is by multichannel memory controller reading displayed buffer data;
S32. display control switch produces liquid crystal control sequential;
S33. display control switch is controlled sequential to liquid crystal display LCD transmitting display data according to liquid crystal.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141549A (en) * | 1995-04-25 | 1997-01-29 | 索尼公司 | Display apparatus, auto-video navigation system, displaying method and car |
| CN1964866A (en) * | 2004-06-11 | 2007-05-16 | 大众汽车有限公司 | Display device for a motor vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1706195A (en) * | 2002-10-18 | 2005-12-07 | 沙诺夫股份有限公司 | Method and system to allow panoramic visualization using multiple cameras |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141549A (en) * | 1995-04-25 | 1997-01-29 | 索尼公司 | Display apparatus, auto-video navigation system, displaying method and car |
| CN1964866A (en) * | 2004-06-11 | 2007-05-16 | 大众汽车有限公司 | Display device for a motor vehicle |
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