CN200962651Y - A radio car rearview device - Google Patents
A radio car rearview device Download PDFInfo
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- CN200962651Y CN200962651Y CN 200620138134 CN200620138134U CN200962651Y CN 200962651 Y CN200962651 Y CN 200962651Y CN 200620138134 CN200620138134 CN 200620138134 CN 200620138134 U CN200620138134 U CN 200620138134U CN 200962651 Y CN200962651 Y CN 200962651Y
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Abstract
The utility model discloses a wireless automobile backsight device which comprises a pick-up device and a display device, wherein the imaging sensor of the pick-up device, a picture processing compressed module, a Blue Tooth module, a Balun circuit, a radio frequency circuit and an antenna are sequentially connected with each other, which transmit video signals to the antenna of the display device through wirelessly. The antenna of the display device, the radio frequency circuit, the Balun circuit, the Blue Tooth module, a picture decode module and a display are sequentially connected with each other, which make the video signals displayed on the display at real time, a keyboard is connected with the Blue Tooth module for inputting starting and controlling signals. The utility model can help drivers improve viewing field without modifying automobile, thereby being convenient to back and berth the automobile. If the mobile phone with the function of the Blue Tooth and video recording playback, PDA or PMP is used, thereby the cost of buying the display device can be saved.
Description
Technical field
The utility model relates to a kind of automobile backsight device, particularly a kind of radio vehicle rear-view device.
Background technology
Automobile is the indispensable vehicles of modern society, because developing of automobile industry, the price of automobile is in continuous decline, expanding economy on the other hand, urban population to increase the vehicle that causes in the city more and more.Can be more and more littler for the space of stopping.This driving technology to the driver requires more and more higher.How in a narrow space, good the vehicle parking of oneself, all be a challenge to each driver.Even this is that the driver also can't see motor vehicle environment in-plant road conditions, especially automotive front and the in-plant road conditions of afterbody clearly, can only rely on the experience estimated distance because under the help of left and right sides rearview mirror and side mirror.The appearance of radar for backing car, the collision that helps the driver to avoid some reversings to cause.But radar for backing car can only give a warning to potential danger, still can not give driver's visual information intuitively, and the guiding driver is good vehicle parking.
Publication number is that the utility model patent of CN 1621272A discloses a kind of automobile backsight device, and the utilization of this device is installed in the camera of automobile outside and the display screen in the driver's cabin, and links to each other with lead and to reach the purpose of eliminating driver's visual dead angle.But the shortcoming of doing like this is:
1. need reequip so that the transmission of vision signal by lead automobile.
2. need to look for the professional person to help to automobile maintenance station.
3. there is potential safety hazard and influences automobile appearance.
4. equipment and cost of labor costliness.
The utility model content
In order to address the above problem, the utility model does not need just can help the driver to improve the visual field of observation to automobile repacking, makes things convenient for the operation in vehicle backing, berth.
The utility model is realized by following scheme: a kind of radio vehicle rear-view device comprises camera head and display unit; Wherein said camera head comprises imageing sensor, image processing compression module, bluetooth module, Balun circuit (unbalance voltage device), radio circuit, antenna; Described display unit comprises antenna, radio circuit, Balun circuit, bluetooth module, picture decoding module, display, keyboard; The imageing sensor of camera head, image processing compression module, bluetooth module, Balun circuit, radio circuit, antenna connect in turn, vision signal are given the antenna of display unit by wireless transmission; The antenna of display unit, radio circuit, Balun circuit, bluetooth module, picture decoding module, display connect in turn, and vision signal is presented on the display in real time, and keyboard is connected with bluetooth module, are used for input and start and control signal.
Described image processing compression module can comprise sensor interface module, image processing module, image compression encoding module, buffer, Microprocessor Interface; Wherein sensor interface module, image processing module, image compression encoding module, buffer, Microprocessor Interface connect in turn; Sensor interface module receives view data from imageing sensor, and sends to image processing module; Image processing module carries out a series of processing to view data, such as Automatic white balance, and colour correction, GAMMA calibrations etc. are carried out pro rata convergent-divergent according to the requirement of system to image then; The image compression encoding module is compressed data, sends to buffer; Buffer is used for the compressed view data of buffer memory, waits for that bluetooth module reads; Microprocessor Interface is used to transmit read-write requirement and the data of bluetooth module for the image processing compression module.
Described bluetooth module can comprise microprocessor, bluetooth baseband module, bluetooth transceiver, transmit/receive switch, clock/power management module.
For the bluetooth module of camera head, microprocessor connects and control image processing compression module, receives the output signal of image processing compression module; Microprocessor also connects control bluetooth baseband module; The bluetooth baseband module connects bluetooth transceiver, carries out Bluetooth baseband protocol(BBP); Bluetooth transceiver connects transmit/receive switch, and transmit/receive switch connects the Balun circuit; Clock/power management module connects microprocessor, bluetooth baseband module, bluetooth transceiver, transmit/receive switch, is used for the control of clock and power supply.
For the bluetooth module of display unit, microprocessor connection and control chart are carried vision signal as decoder module to the picture decoding module; Microprocessor also connects control bluetooth baseband module; The bluetooth baseband module connects bluetooth transceiver, carries out Bluetooth baseband protocol(BBP); Bluetooth transceiver connects transmit/receive switch, and transmit/receive switch connects the Balun circuit; Clock/power management module connects microprocessor, bluetooth baseband module, bluetooth transceiver, transmit/receive switch, is used for the control of clock and power supply.
Described picture decoding module can comprise Microprocessor Interface, buffer, picture decoding module, display controller; Wherein Microprocessor Interface is connected with buffer, and buffer is connected respectively with picture decoding module, display controller; Microprocessor Interface receives the control signal and the data of bluetooth module, passes to buffer; Buffer is used for the compressed view data of buffer memory, waits for that the picture decoding module reads; The picture decoding module is decoded to the data of compression, and data are put into buffer, and display controller is read decoded image data and is shown on the display from buffer.
The utility model can also comprise a fixture, and this fixture is a rectangle, and there are two holes both sides, and the hole is corresponding with the fixing hole of license plate; Fixing camera head on this fixture.
Display unit of the present utility model can be with the mobile phone with bluetooth and video recording/reproducing function, or PDA (palmtop computer), or PMP (portable electronic device) replaces, this mobile phone (or PDA or PMP) is gone up embedded with bluetooth chip and image encoding and decoding chips, this mobile phone (or PDA or PMP) receives the signal of camera head, with image data decoding and output on mobile phone (or PDA or PMP) screen.
The course of work of the present utility model is: the user starts display unit by keyboard, display unit sends starting command to camera head, after camera head is received starting command, start imageing sensor, the image processing compression module compresses video data, sends to display unit by bluetooth module again; Display unit receives vision signal, decompresses, and is presented on the display.
The utility model does not need just can help the driver to improve the visual field of observation to automobile repacking, makes things convenient for the operation in vehicle backing, berth.As use existing mobile phone with bluetooth and video recording/reproducing function, or PDA (palmtop computer), or PMP (portable electronic device), the cost of buying display unit can also be saved.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is the utility model camera head structured flowchart.
Fig. 3 is the utility model display device structure block diagram.
Fig. 4 is the utility model scheme of installation.
Fig. 5 is the flow chart of camera head of the present utility model.
Fig. 6 is the flow chart of display unit of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in more detail.
As shown in Figure 1, the utility model comprises camera head and display unit, the imageing sensor of camera head, image processing compression module, bluetooth module, Balun circuit, radio circuit, antenna connect in turn, vision signal are given the antenna of display unit by wireless transmission; The antenna of display unit, radio circuit, Balun circuit, bluetooth module, picture decoding module, display connect in turn, be presented at vision signal on the display in real time, keyboard is connected with bluetooth module, being used for input starts and control signal, it can have only 1 or several button, is used for starting, ceasing and desisting order or other control command.
As Fig. 2 camera head structured flowchart, imageing sensor can be the CMOS/CCD camera, and it is used for taking Lu Condition, and light signal is converted to digital signal, and (YUV422 or BAYER) sends view data to the image processing compression module with certain form.
Image processing compression module and bluetooth module can by two independently chip constitute (use the S3C24A0A chip of VINNO II or Samsung as the image processing compression module, bluetooth module uses the BRF6150 chip), also can use a chip to realize.Certainly, also can use a plurality of chips to finish image processing compression of the present utility model and Bluetooth protocol processing capacity.
As shown in Figure 2, the image processing compression module comprises sensor interface module, image processing module, image compression encoding module, buffer, Microprocessor Interface.
Sensor interface module receives the view data that sends from imageing sensor, and data format can be YUV422 or Bayer form.The resolution of the image maximum that transmits from imageing sensor is 640 * 480.Captive image can by scaled be arbitrary dimension.Sensor interface module utilizes I
2The C agreement is come the control chart image-position sensor.Sensor interface module sends to image processing module to view data again.
If view data is the Bayer form, image processing module at first is converted to the YUV422 form to it, and other modules can only very be grasped the YUV422 form and do like this.Image processing module carries out a series of processing to view data, such as Automatic white balance, and colour correction, GAMMA calibration etc.According to the requirement of system image is carried out pro rata convergent-divergent then, send to the image compression encoding module then.
Because the maximum valid data transmission rate that Bluetooth protocol can be supported is 723kbit/s.And can be QCIF (176 * 144) by the picture size of the minimum of clear identification.If the QCIF of uncompressed image needs 4Mbit/s with the speed rates of per second ten frames, is more than 5 times of maximum rate that Bluetooth protocol can be supported.So, need utilize the image compression encoding module that data are compressed for view data is sent out in real time.Compression coding mode can adopt Motion JPEG, MPEG2, MPEG4, H.264 wait, and their compression ratio can reach more than ten times.Wherein Motion JPEG is the simplest, and operand is minimum.H.264 operand maximum.After the image compression, deposit buffer in.
Buffer is used for the compressed view data of buffer memory, waits for that the microprocessor of bluetooth module reads.
Microprocessor Interface is used for transmitting read-write requirement and the data of microprocessor for the image processing compression section, and the configuration of control register.It supports for example ARM of modal microprocessor, XSCALE.Bus standard is AMBA.
The microprocessor of bluetooth module is ARM or XSCALE CPU, is responsible for the control to all modules, the read-write of register, the read-write of view data, the read-write of internal memory, the processing of interruption, the execution of software.And be used for realizing logical link control and adaptation protocol (L2CAP) and service discovery protocol (SDP) and serial port agreement (SPP).
The bluetooth baseband module is mainly used to carry out Bluetooth baseband protocol(BBP).Baseband layer is positioned on the Bluetooth RF of bluetooth protocol repertory, and constitutes the physical layer of bluetooth with radio layer.In essence, it is as a link controller, the Digital Signal Processing standard of base band link controller has been described, and with the link manager collaborative work, responsible execution resembles link layers such as connecting foundation and power control, and baseband module is responsible for digital signal being write and reading in data from transceiver.Main managing physical channel and link, be responsible for frequency hopping selection and blue-teeth data and information frame transmission, resemble error code correction, data albefaction, bluetooth safety etc.Base band is also managed synchronously and asynchronous link, processing grouping bag, and execution paging, inquiry are come to visit and are obtained bluetooth equipment etc.
Bluetooth transceiver will be divided (time-division) time in frequency hopping (frequency division), adopt time division duplex (TDD) working method (alternately send and receive), and transmits and accept data to the bluetooth baseband module.
Bluetooth transceiver connects transmit/receive switch, and transmit/receive switch is used for the transmitting-receiving of control data.Transmit/receive switch connects the Balun circuit;
Clock/power management module connects microprocessor, bluetooth baseband module, bluetooth transceiver, transmit/receive switch, is used for the control of clock and power supply.
As Fig. 3 display device structure block diagram, display can be a LCD display.
The bluetooth module of display unit and the bluetooth module of camera head are similar, also can use the BRF6150 chip.The picture decoding module is the same with above-mentioned image processing compression module, can use the S3C24A0A of integrated chip VINNO II or Samsung.Certainly, also can use one or more different chips to finish picture decoding of the present utility model and Bluetooth protocol processing capacity.
The microprocessor of bluetooth module connects keyboard, receives the control signals such as startup that keyboard sends; Microprocessor connection and control chart are as decoder module, to the picture decoding module output signal; Microprocessor also connects control bluetooth baseband module; The bluetooth baseband module connects bluetooth transceiver, carries out Bluetooth baseband protocol(BBP); Bluetooth transceiver connects transmit/receive switch, and transmit/receive switch connects the Balun circuit; Clock/power management module connects microprocessor, bluetooth baseband module, bluetooth transceiver, transmit/receive switch, is used for the control of clock and power supply.
The picture decoding module of display unit can comprise Microprocessor Interface, buffer, picture decoding module, display controller; Wherein Microprocessor Interface is connected with buffer, and buffer is connected respectively with picture decoding module, display controller; Microprocessor Interface receives the control signal and the data of bluetooth module, passes to buffer; Buffer is used for the compressed view data of buffer memory, waits for that the picture decoding module reads; The picture decoding module is decoded to the data of compression, sends in the buffer, and display controller takes out decoded image data and outputs on the display from buffer.
Display unit can be with the mobile phone with bluetooth and video recording/reproducing function, or PDA (palmtop computer), or PMP (portable electronic device) replaces, this mobile phone (or PDA or PMP) is gone up embedded with bluetooth chip and image encoding and decoding chips, this mobile phone (or PDA or PMP) receives the signal of camera head, with image data decoding and output on mobile phone (or PDA or PMP) screen.
As shown in Figure 4, the utility model can also comprise a fixture 402, and this fixture is a rectangle, and there are two holes 403 both sides, and hole 403 is corresponding with the fixing hole 405 of license plate 404; Fixing camera head 402 on this fixture 402.The installation of camera head 402 of the present utility model like this is just very easy, only back out the set bolt 406 of license plate 404, the hole 403 of fixture is overlapped with license plate fixing hole 405, set up set bolt 406 again, then camera head 402 just installs, do not need to destroy any position of automobile, and dismounting is also very convenient.
As shown in Figure 5, the course of work of the utility model camera head is: step 501, and after the beginning, step 502, the bluetooth module of camera head starts and initialization, waits for that display unit sends to its open command, and other module enters power down mode; Step 503, bluetooth module judge whether to receive the open command of display unit, as receive open command, then enter step 504, as do not have, and then continue step 503 and judge.Step 504 starts imageing sensor, and the image processing compression module compresses video data; Step 505 is put into buffer with the data of compression; Step 506 is given display unit with the video data of compression by bluetooth module and Balun circuit thereof, radio circuit, antenna transmission; Wherein data are crossed SPP (Serial Port Profile, serial port contextual model) layer protocol, RFCOMM (the linear emulation of serial) layer protocol, L2CAP (logical link control and adaptation protocol) layer protocol, hostcontroller interface (host computer control layer), HCI Transport Driver (host computer control transmission Drive Layer), blue tooth link Manager protocol, Radio module andbaseband (linking bluetooth layer of management protocols, Bluetooth RF module and baseband layer) at the bluetooth module back warp and are handled successively; Step 507 judges whether bluetooth module receives the termination order, as not, then continues execution in step 506, in this way, then returns step 503.
As shown in Figure 6, the course of work of the utility model display unit is: step 601, and after the beginning, step 602 judges whether the user starts display unit by keyboard; As not, continue to judge that this step can adopt the mode of interruption to realize; As be judged as and be, then carry out step 603, send starting command to camera head; Wherein starting command is crossed SPP layer protocol, RFCOMM layer protocol, L2CAP layer protocol, host controller interface, HCI Transport Driver, blue tooth link Manager protocol, Radio moduleand baseband at the bluetooth module back warp and is transmitted successively, goes out by antenna transmission; Step 604 receives the compressed video data that camera head transmits; Wherein data are handled successively through Radio module and baseband, blue tooth link Manager protocol, HCI Transport Driver, host controllerinterface, L2CAP layer protocol, RFCOMM layer protocol, SPP layer protocol, then data are put into buffer; Step 605, the picture decoding module is to being that video data decompresses; Step 606 is presented at data on the screen of display or mobile phone (or PDA or PMP); Step 607 judges whether user's keyboard stops order, as not, continues to judge, in this way, and execution in step 608, the also available interruption of this step realizes; Step 608 sends the termination order to camera head, returns step 602.
More than to radio vehicle rear-view device provided by the utility model, be described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and realizing thought; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (6)
1. a radio vehicle rear-view device comprises camera head and display unit; Wherein camera head comprises imageing sensor, and described display unit comprises display, it is characterized in that: described camera head also comprises image processing compression module, bluetooth module, Balun circuit, radio circuit, antenna; Described display unit also comprises antenna, radio circuit, Balun circuit, bluetooth module, picture decoding module, keyboard; The imageing sensor of described camera head, image processing compression module, bluetooth module, Balun circuit, radio circuit, antenna connect in turn, vision signal are given the antenna of display unit by wireless transmission; The antenna of described display unit, radio circuit, Balun circuit, bluetooth module, picture decoding module, display connect in turn, and vision signal is presented on the display in real time, and keyboard is connected with bluetooth module, are used for input and start and control signal.
2. radio vehicle rear-view device according to claim 1 is characterized in that: described image processing compression module comprises sensor interface module, image processing module, image compression encoding module, buffer, Microprocessor Interface; Wherein sensor interface module, image processing module, image compression encoding module, buffer, Microprocessor Interface connect in turn.
3. radio vehicle rear-view device according to claim 1 is characterized in that: described bluetooth module comprises microprocessor, bluetooth baseband module, bluetooth transceiver, transmit/receive switch, clock/power management module; Wherein microprocessor, bluetooth baseband module, bluetooth transceiver, transmit/receive switch connect in turn, and the clock/power management module that is used for clock and power supply control is connected with microprocessor, bluetooth baseband module, bluetooth transceiver, transmit/receive switch.
4. radio vehicle rear-view device according to claim 1 is characterized in that: described picture decoding module comprises Microprocessor Interface, buffer, picture decoding module, display controller; Wherein Microprocessor Interface is connected with buffer, and buffer is connected respectively with picture decoding module, display controller.
5. radio vehicle rear-view device according to claim 1 is characterized in that: also comprise a fixture, this fixture is a rectangle, and there are two holes both sides, and the hole is corresponding with the fixing hole of license plate; Fixing camera head on this fixture.
6. radio vehicle rear-view device according to claim 1 is characterized in that: described display unit is mobile phone or palmtop computer or the portable electronic device with bluetooth and video recording/reproducing function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620138134 CN200962651Y (en) | 2006-09-12 | 2006-09-12 | A radio car rearview device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620138134 CN200962651Y (en) | 2006-09-12 | 2006-09-12 | A radio car rearview device |
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| Publication Number | Publication Date |
|---|---|
| CN200962651Y true CN200962651Y (en) | 2007-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620138134 Expired - Fee Related CN200962651Y (en) | 2006-09-12 | 2006-09-12 | A radio car rearview device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303221A (en) * | 2013-05-16 | 2013-09-18 | 郭荣 | Vehicle-mounted wireless data image sending and mobile phone display system |
| WO2024037454A1 (en) * | 2022-08-13 | 2024-02-22 | 长春捷翼汽车科技股份有限公司 | Automobile audiovisual system employing wireless network transmission |
-
2006
- 2006-09-12 CN CN 200620138134 patent/CN200962651Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303221A (en) * | 2013-05-16 | 2013-09-18 | 郭荣 | Vehicle-mounted wireless data image sending and mobile phone display system |
| WO2024037454A1 (en) * | 2022-08-13 | 2024-02-22 | 长春捷翼汽车科技股份有限公司 | Automobile audiovisual system employing wireless network transmission |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |