CN204517977U - A kind of handheld device, external picture pick-up device and data transmission system - Google Patents
- ️Wed Jul 29 2015
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Publication number
- CN204517977U CN204517977U CN201520261159.9U CN201520261159U CN204517977U CN 204517977 U CN204517977 U CN 204517977U CN 201520261159 U CN201520261159 U CN 201520261159U CN 204517977 U CN204517977 U CN 204517977U Authority
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- China Prior art keywords
- transmission line
- interface chip
- picture pick
- handheld device
- external picture Prior art date
- 2015-04-27 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 description 16
- 238000012545 processing Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 238000004590 computer program Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 241000931705 Cicada Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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Abstract
The utility model embodiment discloses a kind of handheld device, external picture pick-up device and data transmission system.This system comprises: handheld device, external picture pick-up device and differential digital transmission line; Described handheld device and described external picture pick-up device are respectively arranged with interface chip; One end of described differential digital transmission line connects the interface chip of described handheld device, and the other end of described differential digital transmission line connects the interface chip of described external picture pick-up device.Because the serial data throughput of differential digital transmission line is very high, compared with above-mentioned existing transmission line, improve the resolution of image data transmission, and, because differential digital transmission line can simultaneously transportation simulator data and control data, do not need additionally to increase transmission line, make transmission line interface simple, wire diameter is thin.
Description
Technical field
The utility model relates to communication technical field, particularly relates to a kind of handheld device, external picture pick-up device and data transmission system.
Background technology
Handheld device can realize extra function by external accessories, such as connects external picture pick-up device for realizing the functions such as shooting.This traditional approach realizing connecting external picture pick-up device is, by handheld device end spare interface, according to data transfer demands configuration handheld device and the external picture pick-up device transmission line of external picture pick-up device.
The view data of external picture pick-up device is generally realize transmission by composite video baseband signal (Composite VideoBaseband Signal, CVBS).CVBS, as a kind of traditional image data transfer method, has simple advantage, but can only support the resolution of 768 × 576 at most, and its resolution supported is low.Further, CVBS transmission be analog picture signal, can only transmit image data, can not transmitting control data (as universal input/output interface (General Purpose Input/Output Interface, GPIO) data).If need transmitting control data, need additionally to increase transmission line, transmission line as shown in Figure 1, between external camera and handheld device, use CVBS and GPIO two kinds of transmission line data, this mode makes the transmission line complex interfaces between handheld device and external picture pick-up device, and wire diameter is thick.
Utility model content
The object of the utility model embodiment is to provide a kind of handheld device, external picture pick-up device and data transmission system, for addressing the problem: when transmitting data between handheld device and external picture pick-up device, use traditional CVBS transmission line, the view data resolution of transmission is low, and need the extra transmission line increasing control data, make transmission line complex interfaces, wire diameter is thick.
The object of the utility model embodiment is achieved through the following technical solutions:
A kind of data transmission system, described system comprises:
Handheld device, external picture pick-up device and differential digital transmission line;
Described handheld device and described external picture pick-up device are respectively arranged with interface chip;
One end of described differential digital transmission line connects the interface chip of described handheld device, and the other end of described differential digital transmission line connects the interface chip of described external picture pick-up device.
Optionally, the interface chip of described handheld device and described external picture pick-up device is serioparallel exchange interface chip;
Described handheld device and described external picture pick-up device are also respectively arranged with serial ports and parallel port, one end of described serial ports connects described differential digital transmission line, the other end of described serial ports connects one end of described serioparallel exchange interface chip, and described parallel port connects the other end of described serioparallel exchange interface chip.
Optionally, described serial ports is the one in general-purpose serial bus USB interface, low-voltage differential small computer system interface LVDS and flat panel display FPD-Link interface.
A kind of handheld device, described equipment comprises:
Interface chip;
When handheld device communicates with external picture pick-up device, described interface chip is connected with one end of differential digital transmission line, and the other end of described differential digital transmission line connects external picture pick-up device.
Optionally, described interface chip is serioparallel exchange interface chip;
Described handheld device and described external picture pick-up device are also respectively arranged with serial ports and parallel port, one end of described serial ports connects described differential digital transmission line, the other end of described serial ports connects one end of described serioparallel exchange interface chip, and described parallel port connects the other end of described serioparallel exchange interface chip.
Optionally, described serial ports is the one in USB interface, LVDS and FPD-Link interface.
A kind of external picture pick-up device, described equipment comprises:
Interface chip;
When external picture pick-up device communicates with handheld device, described interface chip is connected with one end of differential digital transmission line, and the other end of described differential digital transmission line connects handheld device.
Optionally, described interface chip is serioparallel exchange interface chip;
Described handheld device and described external picture pick-up device are also respectively arranged with serial ports and parallel port, one end of described serial ports connects described differential digital transmission line, the other end of described serial ports connects one end of described serioparallel exchange interface chip, and described parallel port connects the other end of described serioparallel exchange interface chip.
Optionally, described serial ports is the one in USB interface, LVDS and FPD-Link interface.
In the utility model embodiment, data transmission system comprises handheld device, external picture pick-up device and differential digital transmission line, handheld device and external picture pick-up device are respectively arranged with interface chip, one end of differential digital transmission line connects the interface chip of handheld device, and the other end connects the interface chip of external picture pick-up device.Because the serial data throughput of differential digital transmission line is very high, compared with above-mentioned existing transmission line, improve the resolution of image data transmission, and, because differential digital transmission line can simultaneously transportation simulator data and control data, do not need additionally to increase transmission line, make transmission line interface simple, wire diameter is thin.
Accompanying drawing explanation
Fig. 1 is data transmission system of the prior art;
A kind of data transmission system that Fig. 2 provides for the utility model embodiment;
The another kind of data transmission system that Fig. 3 provides for the utility model embodiment.
Embodiment
A kind of handheld device, external picture pick-up device and the data transmission system that there is provided the utility model below in conjunction with drawings and Examples illustrate in greater detail.
As shown in Figure 2, the utility model embodiment provides a kind of data transmission system, and this system comprises: handheld device, external picture pick-up device and differential digital transmission line;
Handheld device and external picture pick-up device are respectively arranged with interface chip;
One end of differential digital transmission line connects the interface chip of handheld device, and the other end of differential digital transmission line connects the interface chip of external picture pick-up device.
In the utility model embodiment, data transmission system comprises handheld device, external picture pick-up device and differential digital transmission line, handheld device and external picture pick-up device are respectively arranged with interface chip, one end of differential digital transmission line connects the interface chip of handheld device, and the other end connects the interface chip of external picture pick-up device.Because the serial data throughput of differential digital transmission line is very high, compared with above-mentioned existing transmission line, improve the resolution of image data transmission, and, because differential digital transmission line can simultaneously transportation simulator data and control data, do not need additionally to increase transmission line, make transmission line interface simple, wire diameter is thin.
Optionally, in above-mentioned utility model embodiment, the interface chip of handheld device and external picture pick-up device is serioparallel exchange interface chip; Handheld device and external picture pick-up device are also respectively arranged with serial ports and parallel port, and one end of serial ports connects differential digital transmission line, and the other end of serial ports connects one end of serioparallel exchange interface chip, and parallel port connects the other end of serioparallel exchange interface chip.
Optionally, in above-mentioned utility model embodiment, serial ports is USB (Universal SerialBus, USB) interface, low-voltage differential small computer system interface (Low Voltage Differential SmallComputer System Interface, LVDS) one in (Flat Panel Display Link, FPD-Link) interface is connected with flat panel display.
Optionally, in above-mentioned utility model embodiment, parallel port is Parallel image data interface, such as, a brightness two colourities (one Luminance and two Chrominance, YUV) Parallel image data interface, TV broadcasting service standard 656 (Broadcasting service for Television Version 656, BT.656) interface or TV broadcasting service standard 1120 (Broadcasting service for TelevisionVersion 656, BT.1120) interface.
Fig. 3 shows the hardware configuration of a kind of handheld device that the utility model embodiment provides and external picture pick-up device.
Handheld device, except above-mentioned interface chip, parallel port and serial ports, at least also comprises display screen and primary processor etc., and its annexation is as follows: primary processor connects display screen and parallel port respectively.
Wherein, interface chip is serioparallel exchange chip, and serial ports is FPD-Link interface, and parallel port is YUV Parallel image data interface.
Primary processor, for receiving the view data that external picture pick-up device sends, and sends control data and configuration data to external picture pick-up device.
External picture pick-up device is except above-mentioned interface chip, outside parallel port and serial ports, also comprise camera, picture processing chip, single-chip microcomputer, infrared lamp and button etc., its annexation is as follows: single-chip microcomputer is all connected with parallel port with picture processing chip, camera is connected with picture processing chip, and infrared lamp is connected with single-chip microcomputer respectively with button.
Wherein, interface chip is serioparallel exchange chip, and serial ports is FPD-Link interface, and parallel port is YUV Parallel image data interface.
Wherein, camera, for responding to optical signalling, producing view data, and sending it to picture processing chip.Because coffret is to the support of high definition, optionally, this camera is high-definition camera.
Picture processing chip, for processing original image, sends to handheld device by the view data after process.Image pixel coordinates stronger picture processing chip, can present better image display effect after promoting.
Single-chip microcomputer, for mutual with handheld device, obtains the instruction that handheld device sends to external picture pick-up device, and can the actuation of keys of the external picture pick-up device detected, notice handheld device, handheld device can make corresponding response according to by key definition.
Interface chip, for view data (as CVBS data), configuration data (as universal serial bus (Inter-Integrated Circuit, I2C) data), control data (as GPIO data) is encoded on differential digital transmission line, serial data throughput is up to 1.4Gbps.Also for the data decode be encoded to together out, for the process of handheld device main control unit with show.
Differential digital transmission line, for transmitting high speed differential serial data, data transfer rate can reach 1.4Gbps, and a pair twisted-pair feeder can satisfy the demands, and simplifies cable designs.Interface chip is used for the view data be encoded to together, I2C, GPIO data decode out, for the process of handheld device main control unit with show.
On the basis of such scheme, for the view data of 1080P, 720P and transmission time 30 frames per second, to transmission data volume calculate:
1080P original pixels is counted: 1920*1080=2073600, each pixel 8 (bit), so the data volume in 1 second is 2073600*8*30=49766400bit, be approximately 497 megabyte per second Mbps, YUV422 (16bbit) data volume exported through picture processing chip is 2073600*16*30=99532800bit, is approximately 995Mbps.
720P original pixels is counted: 1080*720=777600, and the data volume obtained according to the method described above is about 186Mbps, and the YUV422 (16bit) exported through picture processing chip is about 373Mbps.
Because the data throughout of interface chip and differential digital transmission line is 1.4Gbps, can meet the demand completely, the resolution image quality of the 768*576 that can transmit than CVBS can have obvious lifting.
Based on same design, the utility model embodiment provides a kind of handheld device, and this equipment comprises: interface chip; When handheld device communicates with external picture pick-up device, this interface chip is connected with one end of differential digital transmission line, and the other end of differential digital transmission line connects external picture pick-up device.
Optionally, in above all utility model embodiments, interface chip is serioparallel exchange interface chip; Handheld device and external picture pick-up device are also respectively arranged with serial ports and parallel port, and one end of serial ports connects differential digital transmission line, and the other end of serial ports connects one end of serioparallel exchange interface chip, and parallel port connects the other end of serioparallel exchange interface chip.
Optionally, in above all utility model embodiments, serial ports is the one in USB interface, LVDS and FPD-Link interface.
Based on same design, the utility model example provides a kind of outer shooting to install standby, and this equipment comprises: interface chip; When external picture pick-up device communicates with handheld device, this interface chip is connected with one end of differential digital transmission line, and the other end of differential digital transmission line connects handheld device.
Optionally, in above-mentioned utility model embodiment, interface chip is serioparallel exchange interface chip; Handheld device and external picture pick-up device are also respectively arranged with serial ports and parallel port, and one end of serial ports connects differential digital transmission line, and the other end of serial ports connects one end of serioparallel exchange interface chip, and parallel port connects the other end of serioparallel exchange interface chip.
Optionally, in above all utility model embodiments, this serial ports is the one in USB interface, LVDS and FPD-Link interface.
Those skilled in the art should understand, embodiment of the present utility model can be provided as method, system or computer program.Therefore, the utility model can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the utility model can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The utility model describes with reference to according to the flow chart of the method for the utility model embodiment, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although described preferred embodiment of the present utility model, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (9)
1. a data transmission system, is characterized in that, described system comprises:
Handheld device, external picture pick-up device and differential digital transmission line;
Described handheld device and described external picture pick-up device are respectively arranged with interface chip;
One end of described differential digital transmission line connects the interface chip of described handheld device, and the other end of described differential digital transmission line connects the interface chip of described external picture pick-up device.
2. system according to claim 1, is characterized in that, the interface chip of described handheld device and described external picture pick-up device is serioparallel exchange interface chip;
Described handheld device and described external picture pick-up device are also respectively arranged with serial ports and parallel port, one end of described serial ports connects described differential digital transmission line, the other end of described serial ports connects one end of described serioparallel exchange interface chip, and described parallel port connects the other end of described serioparallel exchange interface chip.
3. system according to claim 2, is characterized in that, described serial ports is the one in general-purpose serial bus USB interface, low-voltage differential small computer system interface LVDS and flat panel display FPD-Link interface.
4. a handheld device, is characterized in that, described equipment comprises:
Interface chip;
When handheld device communicates with external picture pick-up device, described interface chip is connected with one end of differential digital transmission line, and the other end of described differential digital transmission line connects external picture pick-up device.
5. equipment according to claim 4, is characterized in that, described interface chip is serioparallel exchange interface chip;
Described handheld device and described external picture pick-up device are also respectively arranged with serial ports and parallel port, one end of described serial ports connects described differential digital transmission line, the other end of described serial ports connects one end of described serioparallel exchange interface chip, and described parallel port connects the other end of described serioparallel exchange interface chip.
6. equipment according to claim 5, is characterized in that, described serial ports is the one in USB interface, LVDS and FPD-Link interface.
7. an external picture pick-up device, is characterized in that, described equipment comprises:
Interface chip;
When external picture pick-up device communicates with handheld device, described interface chip is connected with one end of differential digital transmission line, and the other end of described differential digital transmission line connects handheld device.
8. equipment according to claim 7, is characterized in that, described interface chip is serioparallel exchange interface chip;
Described handheld device and described external picture pick-up device are also respectively arranged with serial ports and parallel port, one end of described serial ports connects described differential digital transmission line, the other end of described serial ports connects one end of described serioparallel exchange interface chip, and described parallel port connects the other end of described serioparallel exchange interface chip.
9. equipment according to claim 8, is characterized in that, described serial ports is the one in USB interface, LVDS and FPD-Link interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261159.9U CN204517977U (en) | 2015-04-27 | 2015-04-27 | A kind of handheld device, external picture pick-up device and data transmission system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520261159.9U CN204517977U (en) | 2015-04-27 | 2015-04-27 | A kind of handheld device, external picture pick-up device and data transmission system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106454224A (en) * | 2016-09-08 | 2017-02-22 | 延锋伟世通电子科技（上海）有限公司 | Vehicle-mounted rear view camera system |
| CN106488094A (en) * | 2016-09-30 | 2017-03-08 | 浙江吉利控股集团有限公司 | Vehicle-mounted camera and the image transfer method based on this vehicle-mounted camera |
| CN106803903A (en) * | 2017-03-10 | 2017-06-06 | 成都振芯科技股份有限公司 | The decoding circuit of video control signal in a kind of FPD LINK transmission of video |
| CN106921597A (en) * | 2017-03-10 | 2017-07-04 | 成都振芯科技股份有限公司 | A kind of direction Control System in FPD LINK low-voltage differential signal transmission of video |
-
2015
- 2015-04-27 CN CN201520261159.9U patent/CN204517977U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106454224A (en) * | 2016-09-08 | 2017-02-22 | 延锋伟世通电子科技（上海）有限公司 | Vehicle-mounted rear view camera system |
| CN106488094A (en) * | 2016-09-30 | 2017-03-08 | 浙江吉利控股集团有限公司 | Vehicle-mounted camera and the image transfer method based on this vehicle-mounted camera |
| CN106803903A (en) * | 2017-03-10 | 2017-06-06 | 成都振芯科技股份有限公司 | The decoding circuit of video control signal in a kind of FPD LINK transmission of video |
| CN106921597A (en) * | 2017-03-10 | 2017-07-04 | 成都振芯科技股份有限公司 | A kind of direction Control System in FPD LINK low-voltage differential signal transmission of video |
| CN106921597B (en) * | 2017-03-10 | 2020-04-10 | 成都振芯科技股份有限公司 | Bidirectional control system in FPD-LINK low-voltage differential signal video transmission |
| CN106803903B (en) * | 2017-03-10 | 2020-09-29 | 成都振芯科技股份有限公司 | Decoding circuit of video control signal in FPD-LINK video transmission |
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Legal Events
| Date | Code | Title | Description |
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| 2015-07-29 | C14 | Grant of patent or utility model | |
| 2015-07-29 | GR01 | Patent grant | |
| 2024-05-10 | CF01 | Termination of patent right due to non-payment of annual fee | |
| 2024-05-10 | CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 |