CN104268116A - Communication mode for vehicle-mounted entertainment host and split type touch screen - Google Patents
Communication mode for vehicle-mounted entertainment host and split type touch screen Download PDFInfo
- Publication number
- CN104268116A CN104268116A CN201410494220.4A CN201410494220A CN104268116A CN 104268116 A CN104268116 A CN 104268116A CN 201410494220 A CN201410494220 A CN 201410494220A CN 104268116 A CN104268116 A CN 104268116A
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- CN
- China
- Prior art keywords
- lvds
- conversion chip
- signal
- split type
- touch screen
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- 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.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a communication mode for a vehicle-mounted entertainment host and a split type touch screen. The communication mode involves the entertainment host and the split type touch screen; the entertainment host comprises an MCU (Microprogrammed Control Unit) and a first LVDS (Low Voltage Differential Signaling) conversion chip; the split type touch screen comprises a second LVDS conversion chip which is connected with the first LVDS conversion chip through an LVDS connecting part; signals transmitted between the first LVDS conversion chip and the second LVDS conversion chip include an RGB (Red-Green-Blue) video signal, a video control signal, a screen on-off control signal, a background light regulating signal and a touch signal; the screen on-off control signal, the background light regulating signal and the touch signal are separated in a communication protocol between the first LVDS conversion chip and the second LVDS conversion chip. With the adoption of the communication mode for the vehicle-mounted entertainment host and the split type touch screen, the problem of delayed response due to the synchronizing of touch and the use of an on-off key can be solved, and the problem that the background light cannot be continuously regulated can also be solved.
Description
Technical field
The invention belongs to the communication technology of automobile, be specifically related to the communication mode of a kind of car entertainment main frame and Split type touch screen.
Background technology
Along with the continuous change of car inner modeling, the more rich change of moulding in automobile middle control region, conventional monolithic amusement main frame cannot satisfy the demands.So there is the setting be separated with amusement main frame by display screen, rgb video signal between amusement main frame and display screen, video control signal, switchboard control signal, bias light conditioning signal and touch signal are all by a pair LVDS conversion chip transmission, but there is touch breaker in middle screen cannot respond in time, and the problem that bias light can not regulate continuously.
Summary of the invention
The object of this invention is to provide the communication mode of a kind of car entertainment main frame and Split type touch screen, to solve after touch-screen and main frame separate, there is touch and use on & off switch to occur the problem of operating lag simultaneously, and the problem that bias light can not regulate continuously.
The communication mode of a kind of car entertainment main frame of the present invention and Split type touch screen, comprise amusement main frame and Split type touch screen, the LVDS conversion chip that described amusement main frame comprises MCU and is connected with MCU, described Split type touch screen comprises the 2nd LVDS conversion chip, a described LVDS conversion chip is connected by LVDS web member with the 2nd LVDS conversion chip, the signal transmitted between a described LVDS conversion chip and the 2nd LVDS conversion chip has rgb video signal, video control signal, switchboard control signal, bias light conditioning signal and touch signal,
In communication protocol between a described LVDS conversion chip and the 2nd LVDS conversion chip, by switchboard control signal, bias light conditioning signal and touch signal separately, bias light conditioning signal is by a road GPIO port transmission, switchboard control signal is by another road GPIO port transmission, and touch signal is by two I2C transmission.
Frame in communication protocol between a described LVDS conversion chip and the 2nd LVDS conversion chip is 32, and the form of this Frame is as follows:
Described LVDS web member comprises the LVDS interface be connected with a LVDS conversion chip, the 2nd LVDS interface be connected with the 2nd LVDS conversion chip, and connect the LVDS order wire of a LVDS interface and the 2nd LVDS interface, a described LVDS interface and the 2nd LVDS interface all adopt full-shield connector, and described LVDS order wire adopts full-shield twisted-pair feeder.Meet the digital transmission of HD video, meet vehicle-mounted EMC standard.
The advantage of car entertainment main frame of the present invention and the communication mode of Split type touch screen: switchboard control signal, bias light conditioning signal and touch signal are separated, solve touch uses on & off switch to occur the problem of operating lag simultaneously, and the problem that bias light can not regulate continuously, and clear and definite requirement be give also to the connector of Physical layer and wire harness, meet the digital transmission of HD video, meet vehicle-mounted EMC standard.
Accompanying drawing explanation
Fig. 1 is electrical connection schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
A kind of car entertainment main frame as shown in Figure 1 and the communication mode of Split type touch screen, comprise amusement main frame 1 and Split type touch screen 2, the LVDS conversion chip 1b that described amusement main frame 1 comprises MCU1a and is connected with MCU1a, described Split type touch screen 2 comprises the 2nd LVDS conversion chip 2b, a described LVDS conversion chip 1b is connected by LVDS web member with the 2nd LVDS conversion chip 2b, the conversion that amusement main frame 1 and Split type touch screen 2 adopt a pair LVDS conversion chip to realize between serial signal and parallel signal.The model that one LVDS conversion chip 1b and the 2nd LVDS conversion chip 2b adopts is DS90UH925Q, and the signal transmitted between a LVDS conversion chip 1b and the 2nd LVDS conversion chip 2b has rgb video signal, video control signal, switchboard control signal, bias light conditioning signal and touch signal.
Frame in communication protocol between one LVDS conversion chip 1b and the 2nd LVDS conversion chip 2b is 32, and the form of this Frame is as follows:
In communication protocol between a described LVDS conversion chip 1b and the 2nd LVDS conversion chip 2b, by switchboard control signal, bias light conditioning signal and touch signal separately, bias light conditioning signal is by a road GPIO port transmission, switchboard control signal is by another road GPIO port transmission, and touch signal is by two I2C transmission.Touch signal is transmitted by I2C, if also transmitted by I2C by bias light conditioning signal simultaneously, then cannot realize the linear change of display screen backgrounds light, therefore adopt PWM ripple by GPIO port transmission.If switchboard control signal to be walked together with touch signal I2C transmission, use on & off switch to occur the problem of operating lag with regard to existing to touch simultaneously, therefore by switchboard control signal also by GPIO port transmission.
Specific works flow process is: after amusement main frame 1 works, video source is decoded as 24 rgb video signals and 4 digital video control signals by MCU1a.Bias light conditioning signal and switchboard control signal are all by a road GPIO port transmission.Touch signal is by two I
2c transmits.Parallel signal is converted to the serial signal of 32 by the one LVDS conversion chip 1b.This signal is transferred to Split type touch screen 2 by a pair LVDS order wire 3, after Split type touch screen 2 receives data, 2nd LVDS conversion chip 2b unstrings to these data, serial signal is changed into rgb video signal, video control signal, bias light conditioning signal, switchboard control signal, touch signal (i.e. I2C control signal) the respective modules transferred to respectively in Split type touch screen 2, each module makes respective response based on the signal received.The touch signal that Split type touch screen 2 exports simultaneously also returns to amusement main frame 1 by I2C.
Described LVDS web member comprises the LVDS interface 1c be connected with a LVDS conversion chip 1b, the 2nd LVDS interface 2a be connected with the 2nd LVDS conversion chip 2b, and connect the LVDS order wire 3 of a LVDS interface 1c and the 2nd LVDS interface 2a, a described LVDS interface 1c and the 2nd LVDS interface 2a all adopts full-shield connector, and described LVDS order wire 3 adopts full-shield twisted-pair feeder.
Claims (3)
1. the communication mode of a car entertainment main frame and Split type touch screen, comprise amusement main frame (1) and Split type touch screen (2), the LVDS conversion chip (1b) that described amusement main frame (1) comprises MCU (1a) and is connected with MCU (1a), described Split type touch screen (2) comprises the 2nd LVDS conversion chip (2b), a described LVDS conversion chip (1b) is connected by LVDS web member with the 2nd LVDS conversion chip (2b), between a described LVDS conversion chip (1b) and the 2nd LVDS conversion chip (2b), the signal of transmission has rgb video signal, video control signal, switchboard control signal, bias light conditioning signal and touch signal,
It is characterized in that:
In communication protocol between a described LVDS conversion chip (1b) and the 2nd LVDS conversion chip (2b), by switchboard control signal, bias light conditioning signal and touch signal separately, bias light conditioning signal is by a road GPIO port transmission, switchboard control signal is by another road GPIO port transmission, and touch signal is by two I2C transmission.
2. the communication mode of car entertainment main frame according to claim 1 and Split type touch screen, it is characterized in that: the Frame in the communication protocol between a described LVDS conversion chip (1b) and the 2nd LVDS conversion chip (2b) is 32, and the form of this Frame is as follows:
3. the communication mode of car entertainment main frame according to claim 1 and 2 and Split type touch screen, it is characterized in that: described LVDS web member comprises the LVDS interface (1c) be connected with a LVDS conversion chip (1b), the 2nd LVDS interface (2a) be connected with the 2nd LVDS conversion chip (2b), and connect the LVDS order wire (3) of a LVDS interface (1c) and the 2nd LVDS interface (2a), a described LVDS interface (1c) and the 2nd LVDS interface (2a) all adopt full-shield connector, described LVDS order wire (3) adopts full-shield twisted-pair feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410494220.4A CN104268116A (en) | 2014-09-24 | 2014-09-24 | Communication mode for vehicle-mounted entertainment host and split type touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410494220.4A CN104268116A (en) | 2014-09-24 | 2014-09-24 | Communication mode for vehicle-mounted entertainment host and split type touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104268116A true CN104268116A (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410494220.4A Pending CN104268116A (en) | 2014-09-24 | 2014-09-24 | Communication mode for vehicle-mounted entertainment host and split type touch screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293434A (en) * | 2015-05-28 | 2017-01-04 | 惠州市德赛西威汽车电子股份有限公司 | The multi-point gesture identification method of vehicular touch screen terminal and device |
| CN111444130A (en) * | 2017-07-12 | 2020-07-24 | 广州视源电子科技股份有限公司 | Integrated machine |
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| US20120076319A1 (en) * | 2010-09-23 | 2012-03-29 | Bose Corporation | System for Accomplishing Bi-Directional Audio Data and Control Communications |
| CN102568418A (en) * | 2011-12-30 | 2012-07-11 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted display system |
| CN103280206A (en) * | 2013-04-27 | 2013-09-04 | 惠州市德赛西威汽车电子有限公司 | Method for monitoring vehicle-mounted LVDS (Low Voltage Differential Signaling) link |
| CN103336664A (en) * | 2013-06-05 | 2013-10-02 | 南京熊猫电子股份有限公司 | Device and method for achieving control of display backlight with soft keyboard |
| CN203350861U (en) * | 2013-07-31 | 2013-12-18 | 惠州市德赛西威汽车电子有限公司 | Vehicle separation screen multimedia system |
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2014
- 2014-09-24 CN CN201410494220.4A patent/CN104268116A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120076319A1 (en) * | 2010-09-23 | 2012-03-29 | Bose Corporation | System for Accomplishing Bi-Directional Audio Data and Control Communications |
| CN102568418A (en) * | 2011-12-30 | 2012-07-11 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted display system |
| CN103280206A (en) * | 2013-04-27 | 2013-09-04 | 惠州市德赛西威汽车电子有限公司 | Method for monitoring vehicle-mounted LVDS (Low Voltage Differential Signaling) link |
| CN103336664A (en) * | 2013-06-05 | 2013-10-02 | 南京熊猫电子股份有限公司 | Device and method for achieving control of display backlight with soft keyboard |
| CN203350861U (en) * | 2013-07-31 | 2013-12-18 | 惠州市德赛西威汽车电子有限公司 | Vehicle separation screen multimedia system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106293434A (en) * | 2015-05-28 | 2017-01-04 | 惠州市德赛西威汽车电子股份有限公司 | The multi-point gesture identification method of vehicular touch screen terminal and device |
| CN111444130A (en) * | 2017-07-12 | 2020-07-24 | 广州视源电子科技股份有限公司 | Integrated machine |
| CN111444130B (en) * | 2017-07-12 | 2021-10-26 | 广州视源电子科技股份有限公司 | Integrated machine |
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Application publication date: 20150107 |
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