CN203165416U - Vehicle-mounted navigation display apparatus - Google Patents
Vehicle-mounted navigation display apparatus Download PDFInfo
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- CN203165416U CN203165416U CN 201320085293 CN201320085293U CN203165416U CN 203165416 U CN203165416 U CN 203165416U CN 201320085293 CN201320085293 CN 201320085293 CN 201320085293 U CN201320085293 U CN 201320085293U CN 203165416 U CN203165416 U CN 203165416U
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Abstract
Disclosed in the application is a vehicle-mounted navigation display apparatus that comprises a navigation core board for outputting digital video signals, a first signal conversion module, a first low-voltage differential signal interface, a second low-voltage differential signal interface, a second signal conversion module, a first digital display screen, a second digital display screen, and a first touch unit. The digital video signals outputted by the navigation core board are divided into two paths of signals for transmission; one path of signals are provided directly for the first digital display screen for displaying; and the other paths of signals are converted into LVDS signals by the first signal conversion module for transmission, the LVDS signals are converted into digital video signals by the second signal conversion module and are zoomed, and the processed signals are provided for the second digital display screen for displaying. Therefore, the signals are displayed by using two display screens with different resolution ratios in one vehicle-mounted navigation display apparatus. An LVDS signal mode is employed during the transmission process and the transmission is free of external interference; and the transmission distance of digital video signals is improved, thereby realizing long-distance displaying of the two display screens.
Description
Technical field
The application relates to the vehicle mounted guidance technical field, particularly relates to a kind of vehicle mounted guidance display device.
Background technology
Figure 1 shows that existing a kind of vehicle mounted guidance shows the structural representation of framework, described vehicle mounted guidance shows that framework comprises navigation core board 101, video d/a converting unit 102, the first analog rgb interface 103, the second analog rgb interface 104, video a/d converting unit 105, first digital display screen 106, second digital display screen 107, touch-screen 108, this vehicle mounted guidance shows that the course of work of framework is: the digital video signal of navigation core board 101 outputs is divided into two-way, wherein one the tunnel directly offer first digital display screen 106 and show, another road utilizes video d/a converting unit 102 will be converted to analog video signal, after transmitting with the analog video signal form, after again analog video signal being converted to digital video signal by video AD converting unit 105, transferring to second digital display screen 107 and show.
Framework shown in Figure 1 can not be supported two digital display screens that resolution is different, they are two years old, because having adopted digital video signal to be converted to analog video signal transmits, again analog video signal is converted to the mode that digital video signal shows, in the transmission course of analog video signal, is subjected to the interference of external interference signal easily.In addition, owing to have only a touch screen interface on the navigation core board, therefore only support the touch operation of a digital display screen, can't realize the touch operation of two digital display screens.
The utility model content
For solving the problems of the technologies described above, the embodiment of the present application provides a kind of vehicle mounted guidance display device, supports two digital display screens that resolution is different with realization, and supports the touch operation of two digital display screens, simultaneously, improves display quality, and technical scheme is as follows:
The application provides a kind of vehicle mounted guidance display device, comprise: the navigation core board of output digital video signal, first signal conversion module, the first Low Voltage Differential Signal interface, the second Low Voltage Differential Signal interface, secondary signal modular converter, first digital display screen, second digital display screen and first touch unit, wherein:
The output terminal of described navigation core board connects described first digital display screen;
The signal input part of described first signal conversion module connects the output terminal of described navigation core board, and the signal output part of described first signal conversion module connects the first Low Voltage Differential Signal interface, and the digital video signal that receives is converted to Low Voltage Differential Signal;
The described second Low Voltage Differential Signal interface connects the described first Low Voltage Differential Signal interface by the Low Voltage Differential Signal cable;
The input end of described secondary signal modular converter connects the described second Low Voltage Differential Signal interface, output terminal connects described second digital display screen, the Low Voltage Differential Signal that receives is converted to digital video signal, and described digital video signal is carried out offering second digital display screen after convergent-divergent is handled shows;
The output terminal of described first touch unit links to each other with the touch screen interface of described navigation core board.
Preferably, above-mentioned vehicle mounted guidance display device also comprises: touch modular converter, and be positioned at second touch unit on described second digital display screen, wherein:
The output terminal of described second touch unit is connected with the signal input part of described touch modular converter;
The signal output part of described touch modular converter is connected with the I/O interface of described navigation core board, and the touch signal that receives is converted to I
2The C signal offers the navigation core board.
Preferably, described touch modular converter is I
2The C touch controller.
Preferably, described first signal conversion module is the Low Voltage Differential Signal serializer.
Preferably, described secondary signal modular converter is the field programmable gate array module, the signal input part of described field programmable gate array module is the input end of described secondary signal modular converter, and the signal output part of described field programmable gate array module is the output terminal of described secondary signal modular converter.
Preferably, described secondary signal modular converter is Low Voltage Differential Signal modular converter, video scaling unit and microprocessor, wherein:
The input end of described Low Voltage Differential Signal modular converter is the input end of described secondary signal modular converter, the output terminal of described Low Voltage Differential Signal modular converter connects the input end of described video scaling unit, Low Voltage Differential Signal is converted to digital video signal offers the video scaling unit;
The output terminal of described video scaling unit is the output terminal of described secondary signal modular converter;
The I/O interface of described microprocessor connects the I/O interface of described video scaling unit, to control the duty of described video scaling unit.
Preferably, described microprocessor is single-chip microcomputer.
The technical scheme that is provided by above the embodiment of the present application as seen, described vehicle mounted guidance display device, the digital video signal of navigation core board output is divided into two-way to be transmitted, one the tunnel directly offers first digital display screen shows, another road is converted to LVDS(Low-Voltage Differential Signaling Low Voltage Differential Signal) transmit, offering second digital display screen after LVDS being converted to digital video signal again and carrying out convergent-divergent shows, use two different display screens of resolution to show in the vehicle mounted guidance display device thereby be presented at, and transmission course adopts the LVDS signal form, be not subject to external interference, and improved the transmission range of digital video signal, realized that the long distance of two display screens shows.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of vehicle mounted guidance display device of prior art;
Fig. 2 is the structural representation of a kind of vehicle mounted guidance display device of the embodiment of the present application;
Fig. 3 is the structural representation of the another kind of vehicle mounted guidance display device of the embodiment of the present application;
Fig. 4 is the structural representation of the another kind of vehicle mounted guidance display device of the embodiment of the present application;
Fig. 5 is the structural representation of the another kind of vehicle mounted guidance display device of the embodiment of the present application.
Embodiment
In order to make those skilled in the art person understand technical scheme among the application better, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all should belong to the scope of the application's protection.
See also Fig. 2, show the structural representation of a kind of vehicle mounted guidance display device of the embodiment of the present application, described device comprises: navigation core board 201, first signal conversion module 202, the first Low Voltage Differential Signal interface 203, the second Low Voltage Differential Signal interface 204, secondary signal modular converter 205, first digital display screen 206, second digital display screen 207, first touch unit 208, wherein:
The output terminal of navigation core board 201 connects first digital display screen 206, digital video signal is offered first digital display screen 206 show.Simultaneously, the output terminal of navigation core board 201 connects the signal input part of first signal conversion module 202, digital video signal for core board 201 outputs of will navigating is converted to LVDS(Low-Voltage Differential Signaling, Low Voltage Differential Signal) signal.
LVDS is a kind of signal transfer mode, also is a kind of level standard, is widely used in the LCDs interface, and LVDS can provide high data transmission rate, and power consumption is very low.In addition, LVDS has also that noise is low, the signal transmission is reliable, strong noise suppresses that ability is strong, the compatible advantage such as good of LVPS.
The LVDS of the output of first signal conversion module 202 is transferred to secondary signal modular converter 205 by the first Low Voltage Differential Signal interface 203 and the second Low Voltage Differential Signal interface 204.
Wherein, first signal conversion module can realize by the LVDS serializer.
Secondary signal modular converter 205 is used for the LVDS signal that receives is converted to digital video signal, and described digital video signal is carried out offering second digital display screen 207 after convergent-divergent is handled.
Wherein, the resolution of first digital display screen is different with the resolution of second digital display screen, and is concrete, such as, the resolution of first digital display screen can be 800*480, the resolution of second digital display screen can be 480*272.
The secondary signal modular converter is corresponding with the resolving power of second digital display screen to the scaling of digital video signal.
The output terminal of first touch unit 208 connects the touch screen interface of navigation core board 201, offers the navigation core board for the trigger pip that the operator is triggered the generation of first touch unit.
The course of work of the vehicle mounted guidance display device that present embodiment provides is as follows:
Navigation core board output digital video signal is divided into two-way by build-out resistor to be transmitted, wherein one the tunnel directly be delivered to first digital display screen and show, simultaneously, offer the navigation core board by first touch unit reception touch signal and handle, realize the touch operation to first digital display screen;
After another road is converted to the LVDS signal through first signal conversion module, transfer to the secondary signal modular converter, by the secondary signal modular converter LVDS signal is converted to digital signal, and the digital signal after will changing is carried out offering second digital display screen after convergent-divergent is handled and is shown.
Said process as can be known, in a vehicle mounted guidance display device, use two different display screens of resolution to show, and, because digital video signal is converted to the LVDS signal to be transmitted, because the LVDS signal has the high and low noise of transmission reliability, suppresses the characteristics of strong noise, therefore, transmission course is not subject to external interference.
The vehicle mounted guidance display device that present embodiment provides, the digital video signal of navigation core board output is divided into two-way to be transmitted, one the tunnel directly offers first digital display screen shows, another road is converted to the LVDS signal and transmits, offering second digital display screen after LVDS being converted to digital video signal again and carrying out convergent-divergent shows, use two different display screens of resolution to show in the vehicle mounted guidance display device thereby be presented at, and transmission course adopts the LVDS signal form, be not subject to external interference, and improved the transmission range of digital video signal, realized that the long distance of two display screens shows.
See also Fig. 3, show the structural representation of the another kind of vehicle mounted guidance display device of the embodiment of the present application, increase by second touch unit 209 and touch modular converter 210 on the basis of the embodiment of Fig. 2 correspondence.
The output terminal of second touch unit 209 connects the signal input part that touches modular converter 210, and the signal output part that touches modular converter 210 connects the I/O interface of navigation core board.
Touch modular converter and specifically can pass through I
2The C touch controller is realized.
Second touch unit and second digital display screen constitute touch-screen, and the trigger action signal that the operator touches 209 generations of second touch unit offers touch modular converter 210, touches modular converter the trigger action signal is converted to I
2The C signal offers the navigation core board, thereby realizes the touch operation to second digital display screen, and need not to take the touch screen interface of navigation core board.
Preferably, secondary signal modular converter among the embodiment of Fig. 2 and Fig. 3 correspondence can pass through FPGA(Field-Programmable Gate Array, field programmable gate array) chip is realized, wherein, fpga chip is the semi-custom circuit in the special IC field, adopts the fpga chip user to need not to throw sheet production and can obtain suitable chip.And fpga chip inside has abundant trigger and I/O pin, and fpga chip adopts high-speed cmos technology, and is low in energy consumption, and can CMOS compatible, advantage such as Transistor-Transistor Logic level.
By the convergent-divergent of FPGA programming realization digital video signal is handled, be after fpga chip receives the LVDS signal, export the digital video signal of another kind of resolution, show for the 480*272 digital video signal offers second digital display screen such as output resolution ratio.
See also Fig. 4, show the structural representation of the another kind of vehicle mounted guidance display device of the application, present embodiment has provided the specific implementation form of the secondary signal modular converter among Fig. 2, concrete, the secondary signal modular converter can pass through Low Voltage Differential Signal modular converter 211, video scaling unit 212, microprocessor 213 realizations.
Concrete, the input end of Low Voltage Differential Signal modular converter 211 is the input end of secondary signal modular converter, the output terminal of Low Voltage Differential Signal modular converter 211 connects the input end of video scaling unit 212, and the output terminal of video scaling unit 212 is the output terminal of secondary signal modular converter;
The I/O interface of microprocessor 213 connects the I/O interface of video scaling unit 213, and little processing is used for the duty of the described video scaling of control unit, and wherein, microprocessor 213 can pass through chip microcontroller.
Low Voltage Differential Signal modular converter 211 is used for the LVDS signal that receives is converted to digital video signal, and offer video scaling unit 212 and carry out video signal scaling and handle, the digital display screens different for resolution show, wherein, the video scaling unit is controlled by microprocessor 213 scaling of described vision signal.
The function of the module that the function of other modules is identical with title in above-described embodiment is identical, repeats no more herein.
The vehicle mounted guidance display device that present embodiment provides realizes the LVDS signal to the conversion of digital video signal by Low Voltage Differential Signal modular converter, video scaling unit and little processing, and to the convergent-divergent of digital signal.
Referring to Fig. 5, show the structural representation of another kind of vehicle mounted guidance display device, the embodiment difference corresponding with Fig. 4 is to increase by second touch unit 209 and touch modular converter 210.
The output terminal of second touch unit 209 connects the signal input part that touches modular converter 210, and the signal output part that touches modular converter 210 connects the I/O interface of navigation core board.
Touching modular converter specifically can pass through I
2The C touch controller is realized.
Second touch unit and second digital display screen constitute touch-screen, and the trigger action signal that the operator touches 209 generations of second touch unit offers touch modular converter 210, touches modular converter the trigger action signal is converted to I
2The C signal offers the navigation core board, thereby realizes the touch operation to second digital display screen, and need not to take the touch screen interface of navigation core board.
The vehicle mounted guidance display device that present embodiment provides realizes the LVDS signal to the conversion of digital video signal by Low Voltage Differential Signal modular converter, video scaling unit and little processing, and to the convergent-divergent of digital signal.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses is difference with other embodiment.Embodiment described above only is schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of unit.Can select wherein some or all of module to realize the purpose of present embodiment scheme according to the actual needs.Those of ordinary skills namely can understand and implement under the situation of not paying creative work.
The above only is the application's embodiment; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection domain.
Claims (7)
1. vehicle mounted guidance display device, it is characterized in that, comprise: the navigation core board of output digital video signal, first signal conversion module, the first Low Voltage Differential Signal interface, the second Low Voltage Differential Signal interface, secondary signal modular converter, first digital display screen, second digital display screen and first touch unit, wherein:
The output terminal of described navigation core board connects described first digital display screen;
The signal input part of described first signal conversion module connects the output terminal of described navigation core board, and the signal output part of described first signal conversion module connects the first Low Voltage Differential Signal interface, and the digital video signal that receives is converted to Low Voltage Differential Signal;
The described second Low Voltage Differential Signal interface connects the described first Low Voltage Differential Signal interface by the Low Voltage Differential Signal cable;
The input end of described secondary signal modular converter connects the described second Low Voltage Differential Signal interface, output terminal connects described second digital display screen, the Low Voltage Differential Signal that receives is converted to digital video signal, and described digital video signal is carried out offering second digital display screen after convergent-divergent is handled shows;
The output terminal of described first touch unit links to each other with the touch screen interface of described navigation core board.
2. vehicle mounted guidance display device according to claim 1 is characterized in that, also comprises: touch modular converter, and be positioned at second touch unit on described second digital display screen, wherein:
The output terminal of described second touch unit is connected with the signal input part of described touch modular converter;
The signal output part of described touch modular converter is connected with the I/O interface of described navigation core board, and the touch signal that receives simulation is converted to I
2The C signal offers the navigation core board.
3. vehicle mounted guidance display device according to claim 2 is characterized in that, described touch modular converter is I
2The C touch controller.
4. vehicle mounted guidance display device according to claim 1 and 2 is characterized in that, described first signal conversion module is the Low Voltage Differential Signal serializer.
5. vehicle mounted guidance display device according to claim 1 and 2, it is characterized in that, described secondary signal modular converter is the field programmable gate array module, the signal input part of described field programmable gate array module is the input end of described secondary signal modular converter, and the signal output part of described field programmable gate array module is the output terminal of described secondary signal modular converter.
6. according to each described vehicle mounted guidance display device of claim 1-3, it is characterized in that described secondary signal modular converter is Low Voltage Differential Signal modular converter, video scaling unit and microprocessor, wherein:
The input end of described Low Voltage Differential Signal modular converter is the input end of described secondary signal modular converter, the output terminal of described Low Voltage Differential Signal modular converter connects the input end of described video scaling unit, Low Voltage Differential Signal is converted to digital video signal offers the video scaling unit;
The output terminal of described video scaling unit is the output terminal of described secondary signal modular converter;
The I/O interface of described microprocessor connects the I/O interface of described video scaling unit, to control the duty of described video scaling unit.
7. vehicle mounted guidance display device according to claim 6 is characterized in that, described microprocessor is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320085293 CN203165416U (en) | 2013-02-25 | 2013-02-25 | Vehicle-mounted navigation display apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320085293 CN203165416U (en) | 2013-02-25 | 2013-02-25 | Vehicle-mounted navigation display apparatus |
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| CN203165416U true CN203165416U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320085293 Expired - Lifetime CN203165416U (en) | 2013-02-25 | 2013-02-25 | Vehicle-mounted navigation display apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371792A (en) * | 2016-10-26 | 2017-02-01 | 深圳市赛格导航科技股份有限公司 | Android vehicle-mounted terminal, and method and deice for double-screen display based on same |
| CN112346688A (en) * | 2020-10-27 | 2021-02-09 | 武汉蓝星科技股份有限公司 | Double-screen display system based on single processor |
| CN112349238A (en) * | 2021-01-06 | 2021-02-09 | 智道网联科技(北京)有限公司 | Vehicle-mounted device, display driving method, and control circuit |
| CN115064133A (en) * | 2022-06-28 | 2022-09-16 | 上海天马微电子有限公司 | Multi-screen display device and driving method thereof |
-
2013
- 2013-02-25 CN CN 201320085293 patent/CN203165416U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371792A (en) * | 2016-10-26 | 2017-02-01 | 深圳市赛格导航科技股份有限公司 | Android vehicle-mounted terminal, and method and deice for double-screen display based on same |
| CN112346688A (en) * | 2020-10-27 | 2021-02-09 | 武汉蓝星科技股份有限公司 | Double-screen display system based on single processor |
| CN112349238A (en) * | 2021-01-06 | 2021-02-09 | 智道网联科技(北京)有限公司 | Vehicle-mounted device, display driving method, and control circuit |
| CN115064133A (en) * | 2022-06-28 | 2022-09-16 | 上海天马微电子有限公司 | Multi-screen display device and driving method thereof |
| CN115064133B (en) * | 2022-06-28 | 2023-08-01 | 上海天马微电子有限公司 | Multi-screen display device and driving method thereof |
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Granted publication date: 20130828 |
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