CN110611747A - System supporting simultaneous use of multiple cameras - Google Patents
System supporting simultaneous use of multiple cameras Download PDFInfo
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- CN110611747A CN110611747A CN201910964605.5A CN201910964605A CN110611747A CN 110611747 A CN110611747 A CN 110611747A CN 201910964605 A CN201910964605 A CN 201910964605A CN 110611747 A CN110611747 A CN 110611747A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 78
- 238000004891 communication Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/90—Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
Abstract
The invention relates to a system for supporting multiple cameras to be used simultaneously, which comprises a main control module and a multi-channel analog-to-digital conversion module, wherein the main control module supports one channel of ISP (Internet service provider) and is provided with multiple virtual channels, the multi-channel analog-to-digital conversion module is connected with the main control module through a communication interface, the multi-channel analog-to-digital conversion module is externally connected with multiple cameras to receive video data shot by the multiple cameras, the multi-channel analog-to-digital conversion module is used for respectively carrying out analog-to-digital conversion processing on the video data shot by the multiple cameras, and transmitting the processed data to the main control module through the communication interface and the multiple virtual channels respectively and simultaneously, and the main control module is also used for processing image signals in the received video data shot by the multiple cameras through the one channel of ISP. The main control module supporting only a single ISP with a virtual channel is matched with an analog-to-digital conversion module to realize the simultaneous use of multiple cameras.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted camera systems, in particular to a system for supporting simultaneous use of multiple cameras.
Background
Currently, vehicle-mounted cameras have been widely used in automobiles because they can provide required images for the automobiles to allow drivers to view information. In the prior art, products supporting multiple camera inputs exist, but in the prior art, the products supporting multiple camera inputs basically select a master supporting multiple ISPs. The defects mainly comprise high main control price and poor model selection; the periphery needs to be increased by more analog-to-digital conversion chips, so that the cost and the occupied space of the PCB are large.
Disclosure of Invention
In view of this, it is necessary to provide a system supporting simultaneous use of multiple cameras, which supports a single ISP main control and one analog-to-digital conversion chip, and reduces the number of analog-to-digital conversion chips.
The utility model provides a system for support multichannel camera to use simultaneously, its includes host system and multichannel analog-to-digital conversion module, host system supports ISP of the same way and has multichannel virtual passageway, multichannel analog-to-digital conversion module with host system passes through communication interface connection, multichannel analog-to-digital conversion module is external to have multichannel camera in order to receive the multichannel video data that the camera was shot, multichannel analog-to-digital conversion module is used for the multichannel video data that the camera was shot carry out analog-to-digital conversion respectively and handle to pass through after will handling data communication interface and multichannel virtual passageway respectively simultaneous transmission give host system, host system still is used for handling the multichannel received through ISP the same way image signal in the video data that the camera was shot.
Preferably, the main control module has an AC8257 main control chip, the multi-channel analog-to-digital conversion module has a multi-channel analog-to-digital conversion chip, the AC8257 main control chip has a plurality of MIPI interfaces, one or two MIPI interfaces are used for connecting the multi-channel analog-to-digital conversion chip, and one MIPI interface is used for connecting an LCD display screen to display shot video data on the LCD display screen.
Preferably, the multi-channel analog-to-digital conversion chip includes a plurality of input units and a plurality of analog-to-digital conversion units, the plurality of input units are respectively connected with the plurality of channels of cameras to receive the video data, the plurality of analog-to-digital conversion units are respectively connected with the plurality of input units, and the analog-to-digital conversion units are used for performing analog-to-digital conversion on the received video data.
Preferably, the multi-channel analog-to-digital conversion chip further includes a plurality of video separation units, the plurality of video separation units are respectively connected to the plurality of analog-to-digital conversion units to receive the video data after analog-to-digital conversion, and the video separation unit is configured to separate the video data after analog-to-digital conversion.
Preferably, the multi-channel analog-to-digital conversion chip further includes a plurality of processor units, the plurality of processor units are respectively connected to the plurality of video separation units to receive separated video data, and the processor unit is configured to perform chrominance and luminance processing on the separated video data.
Preferably, the multi-channel analog-to-digital conversion chip further includes a plurality of output units and an MIPI interface unit, the plurality of output units are connected to the plurality of processor units to receive processed chrominance and luminance video data, the output units are configured to output the processed video data, and the plurality of output units are respectively connected to the MIPI interface unit to respectively send the processed video data to the AC8257 main control chip.
Preferably, the AC8257 main control chip further has a mery unit, and the mery unit is configured to store operation data of the system supporting simultaneous use of multiple cameras.
Preferably, one MIPI interface connecting the AC8257 main control chip and the multi-channel analog-to-digital conversion chip supports simultaneous reception of multiple paths of video data shot by the cameras.
Preferably, the AC8257 main control chip further has a CPU unit and a graphics processor unit, the CPU unit is configured to process the work of the system supporting simultaneous use of multiple cameras, the graphics processor unit is configured to process images, and the MIPI interface and the graphics processor unit are respectively connected to the CPU unit.
Preferably, the AC8257 main control chip further has a communication unit, the communication unit is connected to the CPU unit, and the communication unit is configured to communicate with an external device.
In the system for supporting the simultaneous use of the multiple cameras, the multiple cameras are arranged to shoot video data, the multiple paths of video data are sent to the multi-channel analog-to-digital conversion module at the same time, the multi-channel analog-to-digital conversion module processes the video data and sends the processed data to the main control module through the communication interface, the main control module is provided with the virtual channel, the multi-path camera data are received by the communication interface and the virtual channel at the same time, the simultaneous use of the multiple paths of cameras can be realized only by using the multi-channel analog-to-digital conversion module and the main control module only supporting a single ISP, the use of analog-to-digital conversion chips is effectively reduced, the profit is increased, the higher customer demand is met, and.
Drawings
Fig. 1 is a schematic block diagram of a system supporting simultaneous use of multiple cameras according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an AC8257 main control chip module of a system supporting simultaneous use of multiple cameras according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a multi-channel analog-to-digital conversion chip module of a system supporting simultaneous use of multiple cameras according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of an RN6864M multi-channel analog-to-digital conversion chip of a system supporting simultaneous use of multiple cameras according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and the accompanying drawings.
Referring to fig. 1, a system 100 for supporting simultaneous use of multiple cameras according to an embodiment of the present invention is shown, the system comprises a main control module 1 and a multi-channel analog-to-digital conversion module 2, wherein the main control module 1 supports an ISP (image signal processing) and is provided with a plurality of virtual channels, the multi-channel analog-to-digital conversion module 2 is connected with the main control module 1 through a communication interface, a plurality of cameras 3 are externally connected with the multi-channel analog-to-digital conversion module 2 to receive a plurality of video data shot by the cameras 3, the multi-channel analog-to-digital conversion module 2 is used for respectively performing analog-to-digital conversion processing on the video data shot by the multi-channel camera 3, and transmits the processed data to the main control module 1 through the communication interface and the plurality of virtual channels respectively and simultaneously, the main control module 1 is further configured to process, through an ISP, image signals in the received multiple paths of video data captured by the cameras 3. Preferably, the embodiment of the invention supports simultaneous use of four cameras.
Referring to fig. 2 and fig. 3 in conjunction with fig. 1, the multi-channel analog-to-digital conversion module 2 has a multi-channel analog-to-digital conversion chip 21. Further, in the embodiment of the present invention, the multichannel analog chip 21 is an RN6864M multichannel analog-to-digital conversion chip, and simultaneously supports analog-to-digital conversion of 4 cameras.
Preferably, the main control module 1 has an AC8257 main control chip 11, the AC8257 main control chip 11 has a plurality of MIPI interfaces 111, one or two of the MIPI interfaces 111 are used to connect the multi-channel analog-to-digital conversion chip 21, the AC8257 main control chip has a virtual channel, and one MIPI interface 111 supports receiving multiple channels of video data captured by the camera 3 at the same time.
Preferably, the MIPI interface 111 is also used for connecting the LCD display screen 4 to transmit the shot video data to the LCD display screen 4 for displaying.
Preferably, the multi-channel analog-to-digital conversion chip 21 includes a plurality of input units 211 and a plurality of analog-to-digital conversion units 212, the plurality of input units 211 are respectively connected to the plurality of channels of cameras 3 to receive the video data, and are preferably connected in a one-to-one manner, the plurality of analog-to-digital conversion units 212 are respectively connected to the plurality of input units 211, and the analog-to-digital conversion units 212 are configured to perform analog-to-digital conversion on the received video data.
Preferably, the multi-channel analog-to-digital conversion chip 21 further includes a plurality of video separation units 213, the plurality of video separation units 213 are respectively connected to the plurality of analog-to-digital conversion units 212 to receive the analog-to-digital converted video data, and the video separation unit 213 is configured to separate the analog-to-digital converted video data.
Preferably, the multi-channel analog-to-digital conversion chip 21 further includes a plurality of processor units 214, the plurality of processor units 214 are respectively connected to the plurality of video separation units 213 to receive separated video data, and the processor unit 214 is configured to perform chrominance and luminance processing on the separated video data.
Preferably, the multi-channel analog-to-digital conversion chip 21 further includes a plurality of output units 215 and a MIPI interface unit 216, the plurality of output units 215 are connected to the plurality of processor units 214 to receive processed chrominance and luminance video data, the output units 215 are configured to output the processed video data, and the plurality of output units 215 are respectively connected to the MIPI interface unit 216 to respectively send the processed video data to the AC8257 main control chip 11.
Further, in the embodiment of the present invention, the multi-channel analog-to-digital conversion chip 21 has 4 input units 211, 4 analog-to-digital conversion units 212, 4 video separation units 213, 4 processor units 214, and 4 output units 215.
Preferably, the AC8257 main control chip 11 further has a mery unit 112, and the mery unit 112 is configured to store the operation data of the system 100 that supports simultaneous use of multiple cameras.
Preferably, the AC8257 main control chip 11 further has a CPU unit 113 and a graphics processor unit 114, where the CPU unit 113 is configured to process the operation of the system 100 supporting simultaneous use of multiple cameras, the graphics processor unit 114 is configured to process images, and the MIPI interface 111 and the graphics processor 114 are respectively connected to the CPU unit 113.
Preferably, the AC8257 main control chip 1 further has a communication unit 115, the communication unit 115 is connected to the CPU unit 113, and the communication unit 115 is used for communicating with an external device, so as to ensure that the system 100 supporting simultaneous use of multiple cameras and the external device perform normal wired or wireless communication.
Referring to fig. 4, the RN6864M multichannel analog-to-digital conversion chip has 49 pins, specifically, pins 1 to 49, where the pin 2, the pin 3, the pin 5, and the pin 6 are respectively connected in series with a capacitor and then connected with two resistors connected in parallel, one of the two resistors connected in parallel has another end used for connecting four cameras 3 for receiving video data captured by the cameras 3, and another end of the other resistor is grounded.
Preferably, the 19 th pin, the 20 th pin, the 21 st pin, the 22 nd pin, the 23 rd pin, the 24 th pin, the 25 th pin, the 26 th pin, the 28 th pin, the 29 th pin, the 30 th pin and the 31 th pin are respectively connected with the AC8257 main control chip 11 after being connected with a chip resistor with a resistance value of 33 Ω in series, so as to send the video data after analog-to-digital conversion processing to the AC8257 main control chip 11.
Preferably, the 8 th pin and the 9 th pin are used for connecting an RC oscillation starting circuit, and are used for converting direct current electric energy into alternating current electric energy; the 10 th pin and the 11 th pin are respectively connected with a zero ohm resistor, and the other ends of the two zero ohm resistors are respectively connected with a control memory; the 1 pin, the 13 th pin and the 44 th pin are respectively used for connecting a power management unit; the 17 th pin, the 18 th pin, the 27 th pin, the 32 th pin and the 39 th pin are used for inputting power supply voltage, the 49 th pin is a grounding pin, and the rest pins are empty pins.
In the system 100 for supporting the simultaneous use of multiple cameras, the system is responsible for completing the analog-to-digital conversion of multiple cameras 3 through a multi-channel analog-to-digital conversion chip 21, and then the multi-channel analog-to-digital conversion chip is sent to the AC8257 main control chip 11 through one or two MIPI interfaces 111 and other virtual channels together to complete the conversion input function of signals of the multiple cameras, so that the simultaneous use of multiple cameras is realized by matching the main control chip supporting only a single ISP with a virtual channel with one analog-to-digital conversion chip, the analog-to-digital conversion chips are effectively reduced, the resource is saved, the profit is improved, meanwhile, the selling points are increased, and the system can be widely applied to the technical fields of network appointment cars, two-passenger and one-dangerous vehicles.
It should be noted that the present invention is not limited to the above-mentioned embodiments, and other changes and modifications can be made by those skilled in the art according to the spirit of the present invention, and these changes and modifications made according to the spirit of the present invention should be included in the scope of the present invention as claimed.
Claims (10)
1. The utility model provides a system for support multichannel camera to use simultaneously which characterized in that, includes host system and multichannel analog-to-digital conversion module, host system supports ISP of the same way and has multichannel virtual passageway, multichannel analog-to-digital conversion module with host system passes through communication interface connection, multichannel analog-to-digital conversion module is external to have multichannel camera in order to receive the multichannel video data that the camera was shot, multichannel analog-to-digital conversion module is used for carrying out analog-to-digital conversion processing respectively with the multichannel video data that the camera was shot to with the data after will handling through communication interface and multichannel virtual passageway transmit respectively simultaneously host system, host system still is used for handling the multichannel that receives through ISP of the same way image signal in the video data that the camera was shot.
2. The system for supporting the simultaneous use of multiple cameras according to claim 1, wherein the main control module has an AC8257 main control chip, the multi-channel analog-to-digital conversion module has a multi-channel analog-to-digital conversion chip, the AC8257 main control chip has multiple MIPI interfaces, one or two MIPI interfaces are used for connecting the multi-channel analog-to-digital conversion chip, and one MIPI interface is used for connecting an LCD display screen to send the shot video data to the LCD display screen for display.
3. The system according to claim 2, wherein the multi-channel analog-to-digital conversion chip comprises a plurality of input units and a plurality of analog-to-digital conversion units, the plurality of input units are respectively connected to the plurality of cameras to receive the video data, the plurality of analog-to-digital conversion units are respectively connected to the plurality of input units, and the analog-to-digital conversion units are configured to perform analog-to-digital conversion on the received video data.
4. The system of claim 3, wherein the multi-channel ADC chip further comprises a plurality of video separation units, the plurality of video separation units are respectively connected to the plurality of ADC units to receive the ADC video data, and the video separation unit is configured to separate the ADC video data.
5. The system of claim 4, wherein the multi-channel ADC chip further comprises a plurality of processor units, the plurality of processor units are respectively connected to the plurality of video separation units to receive the separated video data, and the processor units are configured to perform chrominance and luminance processing on the separated video data.
6. The system of claim 5, wherein the multi-channel ADC chip further comprises a plurality of output units and an MIPI unit, the plurality of output units are connected to the plurality of processor units for receiving processed chrominance and luminance video data, the output units are used for outputting the processed video data, and the plurality of output units are respectively connected to the MIPI unit for respectively transmitting the processed video data to the AC8257 main control chip.
7. The system for supporting the simultaneous use of multiple cameras according to claim 2, wherein the AC8257 main control chip further has a merry unit for storing operation data of the system for supporting the simultaneous use of multiple cameras.
8. The system of claim 2, wherein one of the MIPI interfaces connecting the AC8257 main control chip and the multi-channel analog-to-digital conversion chip supports simultaneous reception of multiple video data captured by the cameras.
9. The system for supporting the simultaneous use of multiple cameras according to claim 2, wherein the AC8257 main control chip further has a CPU unit for processing the operation of the system for supporting the simultaneous use of multiple cameras and a graphics processor unit for processing images, and the MIPI interface and the graphics processor unit are respectively connected to the CPU unit.
10. The system for supporting the simultaneous use of multiple cameras according to claim 9, wherein the AC8257 main control chip further has a communication unit, the communication unit is connected to the CPU unit, and the communication unit is used for communicating with an external device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910964605.5A CN110611747A (en) | 2019-10-11 | 2019-10-11 | System supporting simultaneous use of multiple cameras |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910964605.5A CN110611747A (en) | 2019-10-11 | 2019-10-11 | System supporting simultaneous use of multiple cameras |
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| CN110611747A true CN110611747A (en) | 2019-12-24 |
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| CN201910964605.5A Pending CN110611747A (en) | 2019-10-11 | 2019-10-11 | System supporting simultaneous use of multiple cameras |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206966A (en) * | 2021-04-30 | 2021-08-03 | 杭州海康威视数字技术股份有限公司 | Multi-channel image data transmission system, method and equipment |
| WO2023000903A1 (en) * | 2021-07-23 | 2023-01-26 | Oppo广东移动通信有限公司 | Data transmission method and apparatus, data receiving method and apparatus, chip, device, and storage medium |
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- 2019-10-11 CN CN201910964605.5A patent/CN110611747A/en active Pending
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| WO2011046246A1 (en) * | 2009-10-16 | 2011-04-21 | 삼성전자 주식회사 | Image photographing apparatus and method using image stored in camera |
| CN109309784A (en) * | 2017-07-28 | 2019-02-05 | 展讯通信（上海）有限公司 | Mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113206966A (en) * | 2021-04-30 | 2021-08-03 | 杭州海康威视数字技术股份有限公司 | Multi-channel image data transmission system, method and equipment |
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