CN103188480A - Car backing display system and car backing display method - Google Patents
Car backing display system and car backing display method Download PDFInfo
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- CN103188480A CN103188480A CN201110457436XA CN201110457436A CN103188480A CN 103188480 A CN103188480 A CN 103188480A CN 201110457436X A CN201110457436X A CN 201110457436XA CN 201110457436 A CN201110457436 A CN 201110457436A CN 103188480 A CN103188480 A CN 103188480A
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Abstract
The invention provides a car backing display system and a car backing display method. The car backing display system comprises a camera unit, a video chip and a display unit, wherein the camera unit is used for obtaining a car backing video so as to generate video signals; the video chip is used for processing the video signals based on preset gain data, the gain data are values which are larger than zero, the values of the preset gain data are relative to the degree of decay of the video signals in the process of transmission; and the display unit is used for displaying the processed video signals. The car backing display system enables a user to adjust the degree of decay for processing the video signals by changing the values of the preset gain data according to practical circumstances, displaying sharpness of the car backing video is confirmed according to practical circumstances of an automobile, and therefore the displaying sharpness is high.
Description
Technical field
The present invention relates to vehicle-mounted technical field, particularly a kind of reversing display system and reversing display packing.
Background technology
Video vehicle back radar is generally speaking upgraded on common radar for backing car basis exactly, has added the reversing visual function.Implementation mainly is to have increased display and the first-class accessory of shooting, the hardware main frame also changes thereupon, this kind radar for backing car is the situation behind the car when reaction and display is moveed backward more intuitively in reversing, camera collection to be material picture behind the car, be transferred on the LCD that is installed in the driver's cabin by host process, allow the image behind the car have a panoramic view, the great like this level of security when having improved reversing reduces the accident that takes place because of reversing.
Publication number provides a kind of reversing automatic display unit for the Chinese patent literature of CN 2683457Y, formed by display, video camera, reversing lamp and reversing switch, be characterized in that video camera is located in the afterbody or reversing lamp outer cover of vehicle, display is located at the anterior easy observed position of driver in the driver's cabin, use this reversing automatic display unit, the driver is as long as one hang reverse gear, just can see behind the car all by display.
But prior art has just realized the Presentation Function of reverse image, has defective aspect the display resolution of reverse image, and for example flower shields, noise is serious etc.
Summary of the invention
What technical solution of the present invention solved is that the definition that the prior art reverse image shows exists defective.
The invention provides a kind of reversing display system, comprising:
The camera unit is suitable for obtaining reverse image, produces vision signal;
Video chip is suitable for handling described vision signal based on default gain data, and wherein, described default gain data is the numerical value greater than zero, and the numerical value of described default gain data is associated with the degree of decay of described vision signal in transmission course;
Display unit is suitable for showing the vision signal of described processing.
Concrete, described reversing display system also comprises: signal acquiring unit is suitable for sending enable signal to the camera unit getting access to when reversing gear signal;
Described camera unit is suitable for obtaining reverse image based on described enable signal.
Concrete, described reversing display system also comprises: the first gain data register is suitable for preserving described default gain data;
Described video chip is suitable for obtaining default gain data from the described first gain data register and handles described vision signal.
Concrete, described reversing display system also comprises: the second gain data register, be suitable for preserving the automatic gain data, and wherein said automatic gain data are zero;
It is zero that described video chip is suitable for based on described automatic gain data, obtains described default gain data from the described first gain data register and handles described vision signal.
Concrete, described vision signal is the CVBS signal.
Concrete, described video chip is suitable for increasing described CVBS signal strength signal intensity based on default gain data.
Concrete, described display unit is LCD, is suitable for showing described CVBS signal of gaining in strength.
Concrete, the degree of decay of described vision signal in transmission course is associated with the wire harness length of the described vision signal of transmission.
Concrete, the hexadecimal numerical value that described default gain data is 0X10 to 0X20.
The present invention also provides a kind of reversing display packing, comprising:
Obtain reverse image, produce vision signal;
Handle described vision signal based on default gain data, wherein, described default gain data is the numerical value greater than zero, and the numerical value of described default gain data is associated with the degree of decay of described vision signal in transmission course;
The vision signal that shows described processing.
Compared with prior art, technical solution of the present invention has the following advantages:
The default gain data of technical solution of the present invention utilization is handled vision signal, the numerical value of described default gain data is associated with the degree of decay of described vision signal in transmission course, make that the user can be according to actual conditions, regulate the gain degree that vision signal is handled by the numerical values recited that changes default gain data, the display resolution of reverse image is definite according to the actual conditions of automobile, thereby display resolution is higher.
And, technical solution of the present invention is zero by the automatic gain data are set, utilize default gain data to handle described vision signal when the automatic gain data are zero getting access to, the automatic gain control of prior art that made the technical solution of the present invention compatibility is so execution mode is fairly simple.
Description of drawings
Fig. 1 is an example structure schematic diagram of the reversing display system of technical solution of the present invention;
Fig. 2 is another example structure schematic diagram of the reversing display system of technical solution of the present invention;
Fig. 3 is the another example structure schematic diagram of the reversing display system of technical solution of the present invention;
Fig. 4 is an embodiment flow chart of the reversing display packing of technical solution of the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.In the following passage, with way of example the present invention is described more specifically with reference to accompanying drawing.According to following explanation, advantages and features of the invention will be clearer.
As shown in Figure 1, in one embodiment, technical solution of the present invention provides a kind of reversing display system, comprising:
Described camera unit 1 can be installed in automobile tail, and for example the car plate of automobile tail top so conveniently obtains reverse image.The vision signal that camera unit 1 produces can for the CVBS signal (Composite Video Broadcast Signal, CVBS).Camera unit 1 can be sent to video chip 2 by coaxial cable with this CVBS signal.
The vision signal that camera unit 1 produces is analog signal, and video chip 2 can carry out the A/D conversion to vision signal.Video chip 2 can also carry out clamp and filtering to vision signal to be handled, and the separation of signals such as brightness/chroma, horizontal/vertical synchronization.
Because camera unit more than 1 is installed in automobile tail, and display unit 3 is installed in automotive interior, so the vision signal that camera unit 1 produces need can show at display unit 3 through transmission and the complicated processing of longer distance.In this process, vision signal can decay gradually, if without gain process, vision signal intensity is lower, and the image that display unit 3 shows can be very fuzzy.One of reason of video attenuation is that the wire harness length of transmission video signal is long.The wire harness length of transmission video signal is more long, and the video attenuation degree is more high, and vision signal intensity is more low, and the image of display unit 3 demonstrations is more fuzzy thereupon.Therefore, the default gain data that the technical solution of the present invention utilization is kept in the first gain data register 4 is handled vision signal, CVBS signal for example, and the numerical value of described default gain data is associated with the degree of decay of described vision signal in transmission course.Concrete, the degree of decay of vision signal in transmission course is more high, and the numerical value of default gain data is more big; Otherwise the degree of decay of vision signal in transmission course is more low, and the numerical value of default gain data is more little.In the practical application, dissimilar vehicle structures are different, and vision signal transfers to the wire harness length of display unit 3 from camera unit 1 also inequality, video signal transmission length is more long, the video attenuation degree is more high, and video signal transmission length is more short, and the video attenuation degree is more low.Therefore, the numerical value of the default gain data of technical solution of the present invention can be associated with the wire harness length of the described vision signal of transmission.Concrete, the wire harness length of transmitting described vision signal is more long, and the numerical value of default gain data is more big, and the wire harness length of transmitting described vision signal is more short, and the numerical value of default gain data is more little.Described default gain data can be the hexadecimal numerical value of 0X10 to 0X20.
As shown in Figure 2, in another embodiment, the reversing display system of technical solution of the present invention also comprises: the first gain data register 4 that is connected with described video chip 2 and the second gain data register 5.The first gain data register 4 is suitable for preserving described default gain data, and the second gain data register 5 is suitable for preserving the automatic gain data.
Technical solution of the present invention adopts the first gain data register 4 to preserve described default gain data, the second gain data register 5 is preserved the automatic gain data, after video chip 2 receives the vision signal of camera unit 1 transmission, from the second gain data register 5, obtain automatic gain data earlier.Video chip 2 gets access to the automatic gain data when being zero, does not utilize described automatic gain data to handle described vision signal, but obtains default gain data from the first gain data register 4, utilizes default gain data to handle described vision signal then.
Because prior art utilizes the automatic gain data to carry out automatic gain control (Automatic Gain Control more, AGC) vision signal of the described decay of processing, for with the prior art compatibility, technical solution of the present invention makes video chip 2 utilize default gain data to handle vision signal automatically by the automatic gain data being set to zero.The user can regulate the gain degree that vision signal is handled according to actual conditions by the numerical values recited that changes the default gain data in the first gain data register 4.Described user can be the producer of automobile making personnel or reversing display system.Described user can be the user of automobile, and described reversing display system can provide the interface corresponding to the described first gain data register, and the user utilizes described interface to preset the setting of gain data.For example, measure vision signal transfers to display unit 3 from camera unit 1 wire harness length, transfer to the degree of decay of display unit 3 from camera unit 1 according to this wire harness length computation vision signal, the numerical values recited of the default gain data in the first gain data register 4 is set based on the video attenuation degree that calculates then.So, because the display resolution of display unit 3 is definite according to the actual conditions of automobile, so display resolution is higher; And, the execution mode compatibility of technical scheme the automatic gain control of prior art, so execution mode is fairly simple.
In other embodiments, the reversing display system of technical solution of the present invention also can not comprise the second gain data register 5.Video chip 2 directly obtains default gain data from the first gain data register 4 after receiving the vision signal of camera unit 1 transmission, utilizes default gain data to handle described vision signal then.
As shown in Figure 3, in another embodiment, the reversing display system of technical solution of the present invention also comprises: the signal acquiring unit 6 that is connected with camera unit 1, be suitable for getting access to when reversing gear signal, and send enable signal to camera unit 1.Described camera unit 1 is suitable for obtaining reverse image based on described enable signal.
As shown in Figure 4, the present invention also provides a kind of reversing display packing, comprising:
Step S1 obtains reverse image, produces vision signal;
Step S2 handles described vision signal based on default gain data, and wherein, described default gain data is the numerical value greater than zero, and the numerical value of described default gain data is associated with the degree of decay of described vision signal in transmission course;
Step S3 shows the vision signal of described processing.
In the present embodiment, described reversing display packing can also comprise: by the described default gain data of the first gain data register holds;
Describedly handle described vision signal based on default gain data and can comprise: obtain default gain data from the described first gain data register and handle described vision signal.
Described reversing display packing can also comprise: by the second gain data register holds automatic gain data;
Describedly obtain default gain data from the described first gain data register and handle described vision signal and comprise: be zero based on described automatic gain data, obtain described default gain data from the described first gain data register and handle described vision signal.
Described vision signal can be the CVBS signal.Describedly handle described vision signal based on default gain data and can comprise: increase described CVBS signal strength signal intensity based on default gain data.The vision signal of the described processing of described demonstration can comprise: show described CVBS signal of gaining in strength by LCD.
The degree of decay of described vision signal in transmission course is associated with the wire harness length of the described vision signal of transmission.The wire harness length of transmitting described vision signal is more long, and the degree of decay of described vision signal in transmission course is more high, and the wire harness length of transmitting described vision signal is more short, and the degree of decay of described vision signal in transmission course is more low.
In an other embodiment, described reversing display packing can also comprise: getting access to when reversing gear signal, sending enable signal;
The described reverse image that obtains comprises: obtain reverse image based on described enable signal.
Though the present invention discloses as above with preferred embodiment, the present invention is defined in this.Any those skilled in the art without departing from the spirit and scope of the present invention, all can do various changes and modification, so protection scope of the present invention should be with claim institute limited range.
Claims (18)
1. a reversing display system is characterized in that, comprising:
The camera unit is suitable for obtaining reverse image, produces vision signal;
Video chip is suitable for handling described vision signal based on default gain data, and wherein, described default gain data is the numerical value greater than zero, and the numerical value of described default gain data is associated with the degree of decay of described vision signal in transmission course;
Display unit is suitable for showing the vision signal of described processing.
2. reversing display system as claimed in claim 1 is characterized in that, also comprises: signal acquiring unit, be suitable for getting access to when reversing gear signal, and send enable signal to the camera unit;
Described camera unit is suitable for obtaining reverse image based on described enable signal.
3. reversing display system as claimed in claim 1 is characterized in that, also comprises: the first gain data register is suitable for preserving described default gain data;
Described video chip is suitable for obtaining default gain data from the described first gain data register and handles described vision signal.
4. reversing display system as claimed in claim 3 is characterized in that, also comprises: the second gain data register is suitable for preserving the automatic gain data;
It is zero that described video chip is suitable for based on described automatic gain data, obtains described default gain data from the described first gain data register and handles described vision signal.
5. reversing display system as claimed in claim 1 is characterized in that, described vision signal is the CVBS signal.
6. reversing display system as claimed in claim 5 is characterized in that, described video chip is suitable for increasing described CVBS signal strength signal intensity based on default gain data.
7. reversing display system as claimed in claim 6 is characterized in that, described display unit is LCD, is suitable for showing the CVBS signal of gaining in strength.
8. reversing display system as claimed in claim 1 is characterized in that, the degree of decay of described vision signal in transmission course is associated with the wire harness length of the described vision signal of transmission.
9. reversing display system as claimed in claim 1 is characterized in that, the hexadecimal numerical value that described default gain data is 0X10 to 0X20.
10. a reversing display packing is characterized in that, comprising:
Obtain reverse image, produce vision signal;
Handle described vision signal based on default gain data, wherein, described default gain data is the numerical value greater than zero, and the numerical value of described default gain data is associated with the degree of decay of described vision signal in transmission course;
The vision signal that shows described processing.
11. reversing display packing as claimed in claim 10 is characterized in that, also comprises: getting access to when reversing gear signal, sending enable signal;
The described reverse image that obtains comprises: obtain reverse image based on described enable signal.
12. reversing display packing as claimed in claim 10 is characterized in that, also comprises: by the described default gain data of the first gain data register holds;
Describedly handle described vision signal based on default gain data and comprise: obtain default gain data from the described first gain data register and handle described vision signal.
13. reversing display packing as claimed in claim 12 is characterized in that, also comprises: by the second gain data register holds automatic gain data, wherein said automatic gain data are zero;
Describedly obtain default gain data from the described first gain data register and handle described vision signal and comprise: be zero based on described automatic gain data, obtain described default gain data from the described first gain data register and handle described vision signal.
14. reversing display packing as claimed in claim 10 is characterized in that, described vision signal is the CVBS signal.
15. reversing display packing as claimed in claim 14 is characterized in that, describedly handles described vision signal based on default gain data and comprises: increase described CVBS signal strength signal intensity based on default gain data.
16. reversing display packing as claimed in claim 15 is characterized in that, the vision signal of the described processing of described demonstration comprises: show the CVBS signal of gaining in strength by LCD.
17. reversing display packing as claimed in claim 10 is characterized in that, the degree of decay of described vision signal in transmission course is associated with the wire harness length of the described vision signal of transmission.
18. reversing display packing as claimed in claim 10 is characterized in that, the hexadecimal numerical value that described default gain data is 0X10 to 0X20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110457436.XA CN103188480B (en) | 2011-12-30 | 2011-12-30 | Display system of moving backward and reversing display methods |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110457436.XA CN103188480B (en) | 2011-12-30 | 2011-12-30 | Display system of moving backward and reversing display methods |
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| CN103188480A true CN103188480A (en) | 2013-07-03 |
| CN103188480B CN103188480B (en) | 2018-03-06 |
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| CN201110457436.XA Active CN103188480B (en) | 2011-12-30 | 2011-12-30 | Display system of moving backward and reversing display methods |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105667399A (en) * | 2016-01-08 | 2016-06-15 | 蔡伟英 | Car backing system and implementation method thereof |
| CN108566529A (en) * | 2018-04-08 | 2018-09-21 | 深圳市沃特沃德股份有限公司 | The method and device of the adaptive camera video format of onboard system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1114488A (en) * | 1994-08-04 | 1996-01-03 | 沈来沛 | Corrector for video transmission on wire and cable |
| CN201369794Y (en) * | 2009-03-03 | 2009-12-23 | 国民技术股份有限公司 | Wireless reverse backsight system |
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2011
- 2011-12-30 CN CN201110457436.XA patent/CN103188480B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1114488A (en) * | 1994-08-04 | 1996-01-03 | 沈来沛 | Corrector for video transmission on wire and cable |
| CN201369794Y (en) * | 2009-03-03 | 2009-12-23 | 国民技术股份有限公司 | Wireless reverse backsight system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105667399A (en) * | 2016-01-08 | 2016-06-15 | 蔡伟英 | Car backing system and implementation method thereof |
| CN108566529A (en) * | 2018-04-08 | 2018-09-21 | 深圳市沃特沃德股份有限公司 | The method and device of the adaptive camera video format of onboard system |
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| CN103188480B (en) | 2018-03-06 |
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Denomination of invention: Car backing display system and car backing display method Effective date of registration: 20190404 Granted publication date: 20180306 Pledgee: Jiading Branch of Shanghai Bank Co., Ltd. Pledgor: Shanghai Botai Yuezhen Electrical Equipment Manufacturing Co., Ltd. Registration number: 2019110000002 |
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Address after: 201815 208, building 4, No. 1411, Yecheng Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee after: Botai vehicle networking technology (Shanghai) Co.,Ltd. Address before: Room 2302-2307, 23rd floor, Meiluo building, No. 30, Tianyaoqiao Road, Xuhui District, Shanghai 200030 Patentee before: SHANGHAI PATEO ELECTRONIC EQUIPMENT MANUFACTURING Co.,Ltd. |
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Change date: 20220329 Registration number: 2019110000002 Pledgor after: Botai vehicle networking technology (Shanghai) Co.,Ltd. Pledgor before: SHANGHAI PATEO ELECTRONIC EQUIPMENT MANUFACTURING Co.,Ltd. |