CN201622821U - Display screen control system - Google Patents
Display screen control system Download PDFInfo
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- CN201622821U CN201622821U CN2010201010991U CN201020101099U CN201622821U CN 201622821 U CN201622821 U CN 201622821U CN 2010201010991 U CN2010201010991 U CN 2010201010991U CN 201020101099 U CN201020101099 U CN 201020101099U CN 201622821 U CN201622821 U CN 201622821U
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Abstract
The utility model provides a display screen control system, which is applicable to the technical field of control. The system comprises a collection card, at least one scanning card and at least one LED driver, wherein at least one LVDS interface is respectively arranged on the collection card and the LED driver, the scanning card is provided with at least two LVDS interfaces, the collection card and the scanning card are connected through LVDS cables and the LVDS interfaces, and the scanning card and the LED driver are also connected through the LVDS cables and the LVDS interfaces. The utility model solves the problems that the video data shift speed of the scanning driving part is limited and the display screen refurbishing rate is influenced by the scanning driver interface technology and the routing. The utility model provides the display screen with high refurbishing rate and high resolution.
Description
Technical field
The utility model belongs to the control technology field, relates in particular to a kind of display screen control system.
Background technology
The big screen LED display screen has brightness height, long service life, scope, rich color and to advantages such as the indoor and outdoor surroundings adaptive faculty are strong with great visual angle, at present it has become the advertising of new generation of tool advantage and the carrier that information is propagated, is widely used in field of information display such as stadiums, road traffic, financial instrument transaction, advertisement media.The main performance index of LED display has sweep frequency, resolution, gray level and brightness etc.As the carrier that a kind of new information is propagated, must pursue better display effect, LED display is just towards high refresh rate at present, high grade grey level, the high brightness direction develops, and the LED control system has direct influence to these several indexs, thereby most important to the display effect of display screen.
At present, general LED display control system as shown in Figure 1, mainly by video frequency collection card, scanning card and drive plate are formed.Video frequency collection card finishes video source data decoding, cut apart and with the PC control signaling interface, by gigabit networking or 100,000,000 nets video data and control signal are sent to the screen body then.Scanning card receives and forwarding video and control signal on the screen body, and will be with video and control signal decoding in year zone, and video data is carried out GAMMA conversion and suitable scan conversion of shielding the body cabling, exports driver to by the multichannel displacement then.Driver receives and the displacement video data, and according to control signal data latching is exported, and lights display screen.
General LED display control system is supported the DVI interface, because of being subjected to the restriction of video data displacement speed, need make compromise selection in gray level and two important indicators of refresh rate, and turntable driving part video data displacement speed is limited by driver interface technology and driver cabling, can be too not high, thus the raising of refresh rate influenced.Too high shifted data speed can be destroyed integrity of data transmission, causes the flicker of screen body, and brings the EMI problem.The restriction of video data displacement speed makes that driver cascade progression can not be too many, and this band that has also limited single scanning card carries width and the dirigibility of driver cabling.
The utility model content
The purpose of this utility model is to provide a kind of display screen control system, is intended to solve the video data displacement speed of scanner driver interfacing of the prior art and cabling restriction turntable driving part, thereby influences the problem of display screen refresh rate.
The utility model is to realize like this, a kind of display screen control system, described system comprises capture card, at least one scanning card and at least one led driver, be respectively arranged with at least one LVDS interface on described capture card and the led driver, described scanning card is provided with at least two LVDS interfaces, be connected with described LVDS interface by the LVDS cable between described capture card and the scanning card, be connected with described LVDS interface equally between described scanning card and the led driver by the LVDS cable.
The display screen control system that the utility model embodiment provides comprises capture card, at least one scanning card and at least one led driver, be respectively arranged with at least one LVDS interface on described capture card and the led driver, described scanning card is provided with at least two LVDS interfaces, be connected with described LVDS interface by the LVDS cable between described capture card and the scanning card, the same LVDS cable that passes through is connected with described LVDS interface between described scanning card and the led driver, solved because the video data displacement speed of scanner driver interfacing and cabling restriction turntable driving part, influence the problem of display screen refresh rate, high refresh rate and high-resolution display screen are provided.
Description of drawings
Fig. 1 is the structured flowchart of the display screen control system that provides of prior art;
Fig. 2 is the structured flowchart of the display screen control system that provides of the utility model embodiment;
Fig. 3 is the structured flowchart of the capture card that provides of the utility model embodiment;
Fig. 4 is the structured flowchart of the scanning card that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The display screen control system that the utility model embodiment provides comprises capture card, at least one scanning card and at least one led driver, be respectively arranged with at least one Low Voltage Differential Signal transmission (Low Voltage Differential Signal on described capture card and the led driver, LVDS) interface, described scanning card is provided with at least two LVDS interfaces, be connected with described LVDS interface by the LVDS cable between described capture card and the scanning card, be connected with described LVDS interface equally between described scanning card and the led driver by the LVDS cable.
Fig. 2 shows the structured flowchart of the display screen control system that the utility model embodiment provides, and for convenience of explanation, has only provided the part relevant with the utility model embodiment among the figure.
The display screen control system that the utility model embodiment provides comprises capture card, at least one scanning card and at least one led driver, wherein, on capture card and led driver, be respectively arranged with at least one LVDS interface, described scanning card is provided with at least two LVDS interfaces, be connected, be connected with described LVDS interface equally between described scanning card and the led driver by LVDS cable and described LVDS interface between capture card and the scanning card by the LVDS cable, wherein, the numeral 1 that identifies among the figure is driver, and driver places on the drive plate; The numeral 2 that identifies among the figure is LVDS interfaces, comprises the LVDS interface on capture card, scanning card and the driver, and this is only being sign, not in order to restriction the utility model; Certainly, other drivers also have the LVDS interface among the figure, do not identify at this.
Last figure only is an embodiment of the present utility model, among the last figure, what be connected with capture card has only one tunnel scanning card, in the utility model embodiment, capture card can connect the multi-channel scanning card, do not repeat them here, connection framework that it is concrete and workflow are similar to the situation of above-mentioned one tunnel scanning card, but not in order to restriction the utility model.
Certainly, when above-mentioned display screen control system comprises a plurality of (more than two) scanning card, be connected with the LVDS cable by the LVDS interface equally between scanning card and the scanning card, at this not in order to restriction the utility model.
Above-mentioned capture card and led driver can be provided with at least one LVDS interface, and scanning card can be provided with at least two LVDS interfaces, down detailed description are arranged, and only are a specific embodiment of the present utility model at this, but not in order to restriction the utility model.
The display screen control system that the utility model embodiment provides can comprise a capture card, several (at least one) scanning card and several (at least one) led drivers, wherein, led driver places on the drive plate, Fig. 2 and followingly be described as embodiment, at this not in order to restriction the utility model.
In the utility model embodiment, capture card will be by pc client transmission vision signal and after control signal handles, output to scanning card by LVDS interface branch multichannel (at least one road), scanning card is transmitted this vision signal, and the vision signal that this scanning cassette tape carries in the zone intercepted and captured, by outputing to led driver by the LVDS interface after certain algorithm process, led driver scans output to the vision signal that receives.
As an embodiment of the present utility model, as shown in Figure 3, the video interface that capture card comprises first process chip, the storer that is connected with described first process chip, be connected with pc client with described first process chip and control interface, at least one the LVDS interface that is connected with scanning card with described first process chip, this first process chip can be a field programmable gate array, can certainly be other processing units, this not in order to the restriction the utility model.
Above-mentioned capture card comprises at least one LVDS interface, and this LVDS interface is connected with the LVDS interface of scanning card by the LVDS cable, realizes the signal transmission of capture card and scanning card.
Above-mentioned capture card also comprises the lvds driver that is connected with LVDS with described first process chip, and this lvds driver makes the LVDS signal be fit to long-distance transmissions in order to the LVDS signal is carried out pre-emphasis.
The video interface of above-mentioned capture card is to decoding video signal, and control interface is a display screen control system parameter configuration passage; Storer can be a high-speed memory, and for vision signal provides buffering, first process chip is handled the various interface signal.The laggard row cache of capture card decoded video signal according to the configuration of display screen, is cut apart vision signal then, and sends and to output to different LVDS interfaces, exports.
As another embodiment of the present utility model, as shown in Figure 4, scanning card comprises second process chip, the storer that is connected with described second process chip and at least two LVDS interfaces that are connected with described second process chip, wherein, this second process chip can be a field programmable gate array, can certainly be other processing units (chips), this not in order to the restriction the utility model.
Above-mentioned scanning card comprises at least two LVDS interfaces, and one of them LVDS interface is used for being connected with the LVDS interface of capture card, carries out the signal transmission by LVDS cable and capture card; Another one LVDS interface is connected with the LVDS interface of led driver or other scanning card by the LVDS cable, carries out the signal transmission, has provided 3 LVDS interfaces among Fig. 4, except above-mentioned two interfaces, also comprises a LVDS interface that is connected with other scanning card.
Above-mentioned scanning card is transmitted video and control signal by LVDS interface and LVDS cable, and intercept and capture the video and the control signal of this scanning card, vision signal is carried out algorithm process, for example GAMMA conversion, pointwise correction and scan-data adjustment are exported the multi-channel scanning data to driver by the LVDS interface then.
In the utility model embodiment, at least one LVDS interface also is set on the led driver, this LVDS interface is connected with scanning card or other led drivers by the LVDS cable, it can use built-in 12bit-16bitPWM brightness regulation, directly cascade between each driver on the drive plate, when transmitting high speed clock and signal data, guarantee the integrality of signal, effectively reduce electromagnetic interference (EMI) (EMI).
The display screen control system that the utility model embodiment provides comprises capture card, at least one scanning card and at least one led driver, be respectively arranged with at least one LVDS interface on described capture card and the led driver, described scanning card is provided with at least two LVDS interfaces, be connected with described LVDS interface by the LVDS cable between described capture card and the scanning card, the same LVDS cable that passes through is connected with described LVDS interface between described scanning card and the led driver, solved because the video data displacement speed of scanner driver interfacing and cabling restriction turntable driving part, influence the problem of display screen refresh rate, high refresh rate and high-resolution display screen are provided, simultaneously, effectively reduce electromagnetic interference (EMI), improve led driver cascade progression.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. display screen control system, described system comprises capture card, at least one scanning card and at least one led driver, it is characterized in that, be respectively arranged with at least one LVDS interface on described capture card and the led driver, described scanning card is provided with at least two LVDS interfaces, be connected with described LVDS interface by the LVDS cable between described capture card and the scanning card, be connected with described LVDS interface equally between described scanning card and the led driver by the LVDS cable.
2. the system as claimed in claim 1, it is characterized in that the video interface that described capture card comprises first process chip, the storer that is connected with described first process chip, be connected with pc client with described first process chip and control interface, at least one the LVDS interface that is connected with scanning card with described first process chip.
3. system as claimed in claim 2 is characterized in that, described capture card also comprises the lvds driver that is connected with LVDS with described first process chip.
4. system as claimed in claim 2 is characterized in that, described first process chip comprises field programmable gate array.
5. the system as claimed in claim 1 is characterized in that, described scanning card comprises second process chip, the storer that is connected with described second process chip and at least two LVDS interfaces that are connected with described second process chip.
6. system as claimed in claim 5 is characterized in that, described second process chip comprises field programmable gate array.
7. the system as claimed in claim 1 is characterized in that, when described system comprises plural scanning card, is connected with the LVDS cable by the LVDS interface between described scanning card and the scanning card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201010991U CN201622821U (en) | 2010-01-22 | 2010-01-22 | Display screen control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201010991U CN201622821U (en) | 2010-01-22 | 2010-01-22 | Display screen control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201622821U true CN201622821U (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201010991U Expired - Lifetime CN201622821U (en) | 2010-01-22 | 2010-01-22 | Display screen control system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034432A (en) * | 2010-12-15 | 2011-04-27 | 广东威创视讯科技股份有限公司 | Light-emitting diode (LED) display screen signal cascade system |
| CN105243968A (en) * | 2015-10-15 | 2016-01-13 | 利亚德光电股份有限公司 | LED (light emitting diode) display, LED television, communication method and communication device |
| CN105609045A (en) * | 2015-12-29 | 2016-05-25 | 西安中颖电子有限公司 | Driving chip cascade system and method of multi-screen driving |
| CN105788521A (en) * | 2014-12-25 | 2016-07-20 | 西安诺瓦电子科技有限公司 | LED display screen system and state detection method |
| CN105788513A (en) * | 2014-12-22 | 2016-07-20 | 西安诺瓦电子科技有限公司 | Scanning card and LED display screen display control system |
| CN112068790A (en) * | 2020-09-03 | 2020-12-11 | 北京华瑞视界科技有限公司 | Tiled display system |
-
2010
- 2010-01-22 CN CN2010201010991U patent/CN201622821U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034432A (en) * | 2010-12-15 | 2011-04-27 | 广东威创视讯科技股份有限公司 | Light-emitting diode (LED) display screen signal cascade system |
| CN105788513A (en) * | 2014-12-22 | 2016-07-20 | 西安诺瓦电子科技有限公司 | Scanning card and LED display screen display control system |
| CN105788521A (en) * | 2014-12-25 | 2016-07-20 | 西安诺瓦电子科技有限公司 | LED display screen system and state detection method |
| CN105788521B (en) * | 2014-12-25 | 2018-07-24 | 西安诺瓦电子科技有限公司 | LED display screen system and condition detection method |
| CN105243968A (en) * | 2015-10-15 | 2016-01-13 | 利亚德光电股份有限公司 | LED (light emitting diode) display, LED television, communication method and communication device |
| CN105609045A (en) * | 2015-12-29 | 2016-05-25 | 西安中颖电子有限公司 | Driving chip cascade system and method of multi-screen driving |
| CN112068790A (en) * | 2020-09-03 | 2020-12-11 | 北京华瑞视界科技有限公司 | Tiled display system |
| CN112068790B (en) * | 2020-09-03 | 2024-06-11 | 北京华瑞视界科技有限公司 | Tiled display system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101103 |
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| CX01 | Expiry of patent term |