CN105516632A - Method and system for converting LVDS video signal into DP1.2 video signal - Google Patents
Method and system for converting LVDS video signal into DP1.2 video signal Download PDFInfo
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- CN105516632A CN105516632A CN201510777335.9A CN201510777335A CN105516632A CN 105516632 A CN105516632 A CN 105516632A CN 201510777335 A CN201510777335 A CN 201510777335A CN 105516632 A CN105516632 A CN 105516632A
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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
- H04N7/0112—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards corresponding to a cinematograph film standard
- H04N7/0115—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards corresponding to a cinematograph film standard with details on the detection of a particular field or frame pattern in the incoming video signal, e.g. 3:2 pull-down pattern
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
The invention relates to a method and system for converting an LVDS video signal into a DP1.2 video signal, and the method comprises the steps: enabling the LVDS video signal to be converted into an RGB video signal; carrying out the buffering and frequency multiplication of the RGB video signal, and the outputting a frequency multiplication signal; carrying out the configuration and transformation of DP1.2 conversion of the outputted frequency multiplication signal according to a DP1.2 conversion configuration command and a DP1.2 conversion starting command, and obtaining a DP1.2 video signal. The method carries out the detection of the maximum DP1.2 video resolution, is high in integration degree, is reliable in operation, is strong in capability of interference resistance, is simple in operation, is economical and practical, can improve the detection reliability and efficiency of a DP1.2 liquid crystal module group, reduces the equipment cost and production cost, and will further facilitate the popularization of related display equipment.
Description
Technical field
The present invention relates to the generation of DP1.2 vision signal, refer to that a kind of LVDS vision signal is converted to the method and system of DP1.2 vision signal particularly, belong to display and the field tests of liquid crystal module.
Background technology
Liquid crystal display module (LiquidCrystalDisplayModule, hereinafter referred to as liquid crystal module) is the critical component that liquid crystal display can normally show, and it is made up of liquid crystal display screen, backlight original paper, Graphics Processing chip and circuit.Liquid crystal display module structure is accurate, processing procedure is complicated, manufacturing technique requirent is high, in order to guarantee yields when producing, need to produce various test video signal by special liquid crystal module testing apparatus to be input in liquid crystal module and to show, thus strictly, comprehensively detect its display effect.
Significantly increase along with people constantly pursue more high definition, display effect more true to nature and biography bandwidth requirements on liquid crystal display module, be used for supporting DP1.1 vision signal and more and more can not meet high standard requirement, cause TV manufacturer to undertake more production costs and complexity, therefore common liquid crystals module cannot meet the need gradually.So market occurs a kind of novel liquid crystal module with ultrahigh resolution, superelevation transmission rate and very-high solution density is meeting the demand of people, this liquid crystal module adopts DP1.2 signaling interface, there is better transmission speed, better transmission range, better EMI is compatible, support higher resolution, the liquid crystal module therefore with DP1.2 interface becomes development trend.
But the testing apparatus of DP1.2 liquid crystal module needs to export same DP1.2 test signal, but existing common liquid crystals module testing apparatus does not have this function, and common liquid crystals module also continue production, its testing apparatus do not enter yet the replacement cycle will continue use.Although module manufacturer also produces DP1.2 liquid crystal module, in order to protect investment, reduce production cost, existing equipment can not be eliminated, again make a big purchase expensive DP1.2 module Special testing device in large quantities.In order to can within short-term low cost production in enormous quantities DP1.2 liquid crystal module and ensure its yields, just still reuse existing common LVDS module testing apparatus on a large scale.
Therefore, need to study a kind of conversion equipment and LVDS vision signal can be converted to DP1.2 vision signal, common LVDS liquid crystal module testing device can be tested DP1.2 module by this conversion equipment, and this conversion equipment is not only wanted dependable performance, integrated efficient but also is wanted low price, easy and simple to handle simultaneously.
The Chinese patent " LVDS vision signal is converted to the method and system of 4LANEDP vision signal " that publication number is " CN104966477A " discloses the method and system that a kind of LVDS vision signal is converted to 4LANEDP vision signal, but the method has the following disadvantages:
1, transmission rate: single Lane maximum transmitted 2.7G.
2, resolution is supported: maximum 2560x1600.
Summary of the invention
The object of the invention is overcome above-mentioned the deficiencies in the prior art and provide a kind of LVDS vision signal to be converted to the method and system of DP1.2 vision signal, and the method can obtain DP1.2 vision signal, and can improve single Lane maximum transfer speed and resolution.
The technical scheme realizing the object of the invention employing is a kind of method that LVDS vision signal is converted to DP1.2 vision signal, and the method comprises:
LVDS vision signal is converted to rgb video signal;
Export after described rgb video signal buffering and frequency multiplication;
Change according to the order of DP1.2 conversion configurations and DP1.2 configuration and the conversion that the frequency-doubled signal of starting command to output carries out DP1.2 conversion, obtain DP1.2 vision signal.
In addition, the present invention also provides a kind of LVDS vision signal to be converted to the system of DP1.2 vision signal, and this system comprises:
LVDS vision signal converting unit, for being converted to rgb video signal by LVDS vision signal;
Buffer memory multiplier unit, for exporting after described rgb video signal buffering and frequency multiplication;
DP1.2 vision signal converting unit, for changing according to the order of DP1.2 conversion configurations and DP1.2 configuration and the conversion that the frequency-doubled signal of starting command to output carries out DP1.2 conversion, obtains DP1.2 vision signal.
The present invention has the following advantages:
1, the data transmission rate of each channel is doubled to 5.4Gbps, and total bandwidth reaches as high as 21.6Gbps, greatly can promote display resolution (Max3840x216060hz), color depth, refresh rate, many display capabilities.
2, support multithread, only need a data lines can transmit multiple independently uncompressed video and audio stream.
3, support high speed and bidirectional data transfers, USB2.0 or Ethernet data can be transmitted in standard DP data wire.
4, support daisy chain link, allow DP input display device to copy the data of input, then output to other display equipment by another one DP.
5, the present invention can detect the DP1.2 vision signal of 1Lane, 2Lane, 4Lane that video source produces, the present invention, by arranging, well can be adapted to the different qualities such as color range, transmission means, coded system of different DP1.2 transmission characteristics, vision signal.
6, the present invention can detect the electrical characteristic of the DP1.2 vision signal that video source produces, and by input DP1.2 electric parameter standard, obtains testing result and output display in the present invention through comparison.
7, the present invention can detect the view data of the DP1.2 vision signal that video source produces, by the every frame image data of buffer memory in advance and and raw video image contrast, thus judge whether each pixel exports correctly, and every two field picture all can detect.
8, the present invention can detect the highest DP1.2 video resolution, not only integrated level is high, reliable operation, antijamming capability are strong, and it is simple to operate, economical and practical, detecting reliability and the efficiency of DP1.2 liquid crystal module can not only be promoted, reduce its equipment cost and production cost, also will improve the universal of related display device further.
9, the present invention is by realizing described repertoire with FPGA (field programmable logic array) chip, DDR (DoubleDateRate double data rate) storage chip, A/D (analog/digital) conversion chip; Above-mentioned device is all the common chips in market, they not only working stability, realize easily, and low price, avoid the problem such as design complexity, poor stability, design cost height caused because using various special chip.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of LVDS video reception unit and LVDS video signal decoding unit;
Fig. 2 is the system architecture diagram that LVDS vision signal of the present invention is converted to DP1.2 vision signal.
In figure, 1.LVDS video reception unit, 1-1.LVDS video signal interface, 1-2.LVDS video reception termination module, the LVDS clock signal demodulation module of 1-3. tetra-LINK, the LVDS demodulated data signal module of 1-4. tetra-LINK, 1-5.LVDS demodulation dynamic calibration module;
2.LVDS video signal decoding unit, 2-1.LVDS audio video synchronization buffer module, the LVDS video signal cable sequence control module of 2-2. tetra-LINK, 2-3.LVDS video synchronization signal decoder module, the LVDS video data decoding module of 2-4. tetra-LINK;
3.RGB vision signal converting unit, 3-1.RGB video signal self-adaptive control module, 3-2.RGB video clock adaptive configuration module, 3-3RGB. video clock generation module, 3-4.RGB video clock exports adjusting module, 3-5. single-link pattern rgb video modular converter, 3-6. dual link pattern rgb video modular converter, 3-7. tetra-link mode rgb video modular converter, about 3-8. span mode rgb video modular converter, 3-9. odd even span mode rgb video modular converter, 3-10.RGB vision signal output module;
4,4-1. left passage rgb video signal buffer memory multiplier unit, 4-2. right passage rgb video signal buffer memory multiplier unit, 4-3.RGB vision signal lock unit;
5, Video Quality Metric dispensing unit, the manual toggle switch of 5-1., 5-2.JTAG interface, 5-3.DP1.2 Video Quality Metric configuration module;
6, DP1.2 vision signal converting unit, 6-1.DP1.2 register module, 6-2. left DP1.2 vision signal modular converter, 6-3. right wing DP1.2 vision signal modular converter, 6-4.DP1.2 shows module connector.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As depicted in figs. 1 and 2, the system that LVDS vision signal of the present invention is converted to DP1.2 vision signal comprises LVDS vision signal converting unit, buffer memory multiplier unit and DP1.2 vision signal converting unit.Wherein,
LVDS vision signal converting unit is used for LVDS vision signal to be converted to rgb video signal, the process that LVDS vision signal is converted to rgb video signal by the present embodiment can be that disclosed in the Chinese patent " LVDS vision signal is converted to the method and system of 4LANEDP vision signal " that publication number is " CN104966477A " LVDS vision signal to be converted to rgb video signal the same, namely by LVDS video reception unit 1, LVDS video signal decoding unit 2, rgb video signal converting unit 3 and Video Quality Metric dispensing unit 5 obtain rgb video signal, this transfer process is prior art, repeat no more herein.
Relative to the Chinese patent that publication number is " CN104966477A ", the system that LVDS vision signal of the present invention is converted to DP1.2 vision signal also comprises for exporting buffer memory multiplier unit 4 to after gained rgb video signal buffering and frequency multiplication, and buffer memory multiplier unit 4 comprises left passage rgb video signal buffer memory multiplier unit 4-1, right passage rgb video signal buffer memory multiplier unit 4-2 and rgb video signal lock unit 4-3.The input of left passage rgb video signal buffer memory multiplier unit 4-1 is connected with rgb video signal output module 3-10, exports and is connected with left DP1.2 vision signal modular converter 6-2; The input of right passage rgb video signal buffer memory multiplier unit 4-2 is connected with rgb video signal output module 3-10 to export and is connected with right wing DP1.2 vision signal modular converter 6-3; Left DP1.2 vision signal modular converter 6-2 shows module connector with DP1.2 respectively with right wing DP1.2 vision signal modular converter 6-3 and is connected, and left DP1.2 vision signal modular converter 6-2 is also connected with DP1.2 register module 6-1 respectively with right wing DP1.2 vision signal modular converter 6-3.
Realizing LVDS vision signal by said system, to be converted to the process of DP1.2 vision signal as follows:
1, LVDS vision signal is converted to rgb video signal, this step is prior art, repeats no more herein.
2, export after gained rgb video signal buffering and frequency multiplication, be specially left passage rgb video signal buffer memory multiplier unit 4-1 and the left passage rgb video signal exported is carried out data buffering and data frequency multiplication, improve left channel data and clock frequency;
The right passage rgb video signal exported is carried out data buffering and data frequency multiplication by right passage rgb video signal buffer memory multiplier unit 4-2, improves right channel data and clock frequency;
Left for gained channel data and right channel data carry out synchronously by rgb video signal lock unit 4-3, enable 2 tunnel RGB data signal synchronism output.
3, change according to the order of DP1.2 conversion configurations and DP1.2 configuration and the conversion that the frequency-doubled signal of starting command to output carries out DP1.2 conversion, obtain DP1.2 vision signal, be specially:
DP1.2 register module 6-1 is according to the configuration of the DP1.2 register command control DP1.2 conversion of write and operation;
Left DP1.2 signal conversion module 6-2 receive left passage rgb video signal buffer memory multiplier unit 4-1 synchronous after left passage rgb video signal, perform the configuration and the conversion operations that the left passage rgb video signal after synchronous are converted to left passage DP1.2 vision signal;
Right wing DP1.2 signal conversion module 6-3 receive right passage rgb video signal buffer memory multiplier unit 4-2 synchronous after right passage rgb video signal, perform the configuration and the conversion operations that the right passage rgb video signal after synchronous are converted to right passage DP1.2 vision signal;
DP1.2 shows module connector 6-4 and receives gained left passage DP1.2 vision signal and right passage DP1.2 vision signal simultaneously, and show module with DP and be connected, and left passage DP1.2 vision signal and right passage DP1.2 vision signal is sent to DP display module.
The present invention is not limited to above-mentioned execution mode; for those skilled in the art, be also considered as within the protection range of patent of the present invention according to know-why of the present invention and scheme or the some improvement made under enlightenment of the present invention, change, retouching, distortion, replacement.
Claims (6)
1. LVDS vision signal is converted to a method for DP1.2 vision signal, it is characterized in that:
LVDS vision signal is converted to rgb video signal;
Export after described rgb video signal buffering and frequency multiplication;
Change according to the order of DP1.2 conversion configurations and DP1.2 configuration and the conversion that the frequency-doubled signal of starting command to output carries out DP1.2 conversion, obtain DP1.2 vision signal.
2. LVDS vision signal is converted to the method for DP1.2 vision signal according to claim 1, it is characterized in that:
The left passage rgb video signal exported is carried out data buffering and data frequency multiplication, improves left channel data and clock frequency;
The right passage rgb video signal exported is carried out data buffering and data frequency multiplication, improves right channel data and clock frequency;
Described left channel data and right channel data are carried out synchronously, enable 2 tunnel RGB data signal synchronism output.
3. LVDS vision signal is converted to the method for DP1.2 vision signal according to claim 2, it is characterized in that:
The configuration changed according to the DP1.2 register command control DP1.2 of write and operation;
Receive synchronous after left passage rgb video signal, perform by described synchronous after left passage rgb video signal be converted to configuration and the conversion operations of left passage DP1.2 vision signal;
Receive synchronous after right passage rgb video signal, perform by described synchronous after right passage rgb video signal be converted to configuration and the conversion operations of right passage DP1.2 vision signal;
Receive left passage DP1.2 vision signal and right passage DP1.2 vision signal simultaneously, and show module with DP and be connected, left passage DP1.2 vision signal and right passage DP1.2 vision signal are sent to DP and show module.
4. LVDS vision signal is converted to a system for DP1.2 vision signal, it is characterized in that comprising:
LVDS vision signal converting unit, for being converted to rgb video signal by LVDS vision signal;
Buffer memory multiplier unit, for exporting after described rgb video signal buffering and frequency multiplication;
DP1.2 vision signal converting unit, for changing according to the order of DP1.2 conversion configurations and DP1.2 configuration and the conversion that the frequency-doubled signal of starting command to output carries out DP1.2 conversion, obtains DP1.2 vision signal.
5. LVDS vision signal is converted to the system of DP1.2 vision signal according to claim 4, it is characterized in that described buffer memory multiplier unit comprises:
Left passage rgb video signal buffer memory multiplier unit, for the left passage rgb video signal exported is carried out data buffering and data frequency multiplication, improves left channel data and clock frequency;
Right passage rgb video signal buffer memory multiplier unit, for the right passage rgb video signal exported is carried out data buffering and data frequency multiplication, improves right channel data and clock frequency;
Rgb video signal lock unit, for being undertaken synchronously by described left channel data and right channel data, enables 2 tunnel RGB data signal synchronism output.
6. LVDS vision signal is converted to the system of DP1.2 vision signal according to claim 4, it is characterized in that described DP1.2 vision signal converting unit comprises:
DP1.2 register module, for configuration and the operation of the DP1.2 register command control DP1.2 conversion according to write;
Left DP1.2 signal conversion module, for receive synchronous after left passage rgb video signal, perform by described synchronous after left passage rgb video signal be converted to configuration and the conversion operations of left passage DP1.2 vision signal;
Right wing DP1.2 signal conversion module, for receive synchronous after right passage rgb video signal, perform by described synchronous after right passage rgb video signal be converted to configuration and the conversion operations of right passage DP1.2 vision signal;
DP1.2 shows module connector, for receiving left passage DP1.2 vision signal and right passage DP1.2 vision signal simultaneously, and show module with DP and is connected, left passage DP1.2 vision signal and right passage DP1.2 vision signal are sent to DP display module.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510777335.9A CN105516632B (en) | 2015-11-13 | 2015-11-13 | LVDS vision signal is converted to the method and system of DP1.2 vision signal |
| PCT/CN2016/087208 WO2017000849A1 (en) | 2015-06-29 | 2016-06-27 | Method and system for converting lvds video signal into dp video signal |
| KR1020187002656A KR102025026B1 (en) | 2015-06-29 | 2016-06-27 | Method and system for converting LVDS video signal to DP video signal |
| JP2017561954A JP6574493B2 (en) | 2015-06-29 | 2016-06-27 | Method and system for converting LVDS video signals to DP video signals |
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| CN201510777335.9A CN105516632B (en) | 2015-11-13 | 2015-11-13 | LVDS vision signal is converted to the method and system of DP1.2 vision signal |
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| CN105516632A true CN105516632A (en) | 2016-04-20 |
| CN105516632B CN105516632B (en) | 2019-04-30 |
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| CN111819621A (en) * | 2018-03-15 | 2020-10-23 | Nec显示器解决方案株式会社 | Display device and multi-display system |
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| US11573758B2 (en) | 2018-03-15 | 2023-02-07 | Sharp Nec Display Solutions, Ltd. | Display device and multi-display system |
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