CN103268752A - LED display screen brightness and chrominance correction system - Google Patents
LED display screen brightness and chrominance correction system Download PDFInfo
- Publication number
- CN103268752A CN103268752A CN2013101942814A CN201310194281A CN103268752A CN 103268752 A CN103268752 A CN 103268752A CN 2013101942814 A CN2013101942814 A CN 2013101942814A CN 201310194281 A CN201310194281 A CN 201310194281A CN 103268752 A CN103268752 A CN 103268752A
- Authority
- CN
- China
- Prior art keywords
- data
- led display
- module
- led
- correct
- Prior art date
- 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.)
- Withdrawn
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses an LED display screen brightness and chrominance correction system which comprises an LED controller, an LED display screen, a data collection module, a PC, a data transmission module, a point-by-point correction module and an alarm module. Original pixel parameters of a work picture, collected by the data collection module, of the LED display screen are transmitted to the PC and the PC transmits the original pixel parameters to the point-by-point correction module through the data transmission module; the original pixel parameters are corrected by the point-by-point correction module and transmitted to the LED controller; corrected data are processed by the LED controller and transmitted to the LED display screen to display, and meanwhile, processing result information is transmitted to the PC to display by the LED controller. If the LED controller breaks down, alarm information is transmitted through the alarm module. The LED display screen brightness and chrominance correction system supports brightness and chrominance correction of a low-side IC display screen, generality is good, and reliability is high.
Description
Technical field
The present invention relates to LED and use and the control field, be specifically related to a kind of LED display YC corrective system.
Background technology
LED display is made up of a large amount of light emitting LED lamp, and these LED lamps are in manufacturing process, and the consistance of YC is restive, causes LED display in production and use, the phenomenon of color and brightness irregularities can occur.Along with the prolongation of service time, its performance is also constantly changing, and the visual effect of LED display becomes very poor.In addition, in the working service process, need to change malfunctioning module, because the LED lamp YC of different batches also exists bigger difference, therefore, the inconsistent phenomenon of display screen color and brightness can occur.Domestic many companies have also released pointwise correction brightness system and have solved this problem, yet these systems all are the high-side driver IC designs at state-of-the art band PWM control, display screen for the common drive IC control of consumption maximum on the market, the domestic system that does not still have to support low side IC pointwise correction brightness simultaneously and colourity, has only the external point-to-point correction system of minority at present, can accomplish the pointwise correction of brightness and colourity simultaneously, and the price of this cover system own is high, utilize the each required expense of this system compensation also very high, limited its application widely.
Summary of the invention
Technical matters to be solved by this invention is: a kind of LED display YC corrective system is provided, the common IC that supports high-side driver IC display screen and market to use in a large number drives the pointwise correction of display screen, native system efficiently solves the problem of LED display YC inequality, greatly reduce and produce and maintenance cost, satisfy numerous LED screen user's demand, promote the development of industry, greatly improve industry level and Chinese LED display in the competitive power of international market.
The present invention adopts following technical scheme for solving the problems of the technologies described above:
A kind of LED display YC corrective system comprises led controller, LED display, data acquisition module, PC, data transmission module, pointwise correction module, alarm module; Wherein, data acquisition module comprises camera, the YC tester that is connected with PC respectively; The camera lens of described camera, the relative LED display setting respectively of YC tester; Described PC is sent to LED display with original video information by controller and shows, the original pixels parameter that described camera, YC tester are gathered LED display work picture, and the original pixels parameter that collects transferred to PC, described PC is vision signal, YC parameter, order data with the original pixels parameter decomposition, and transfers to the pointwise correction module by transport module; After described pointwise correction module is handled the original pixels parameter, the data after obtaining proofreading and correct, and the data after will proofreading and correct are sent to led controller; Described led controller is to original video data and after the data after proofreading and correct handle, data after handling are sent to LED display to be shown, simultaneously processing result information is sent to PC and shows that led controller breaks down, send warning message by alarm module.
Described pointwise correction module comprises FPGA, Video Decoder, video encoder, memory module; Wherein FPGA is connected with Video Decoder, video encoder, memory module respectively; Described Video Decoder receiving video signals, be that binary code inputs to FPGA with video signal decompression, FPGA carries out individual element according to the YC parameter of receiving, order data to the vision signal after decompressing and proofreaies and correct, data after will proofreading and correct then transfer to led controller after by video encoder encodes, the data after storage is proofreaied and correct simultaneously.
Described YC tester comprises optical sensor, color temperature sensor; Wherein optical sensor is used for the brightness of test LED display, and color temperature sensor is used for the colourity of test LED display.
Described camera is the technical grade mm professional camera special.
Described vision signal is transmitted by DVI, HDMI data line; Described chroma luminance parameter, order data transmit by the usb data line.
Compared with prior art, the beneficial effect that has of the present invention is:
Corrective system of the present invention does not rely on the led controller hardware system, supports the conversion of several data form, finishes the YC of the LED display of utilizing general purpose I C driving and proofreaies and correct, and is applicable to that the product of the manufacturing is proofreaied and correct and the product maintenance of having used for a long time.
Native system is proofreaied and correct the LED display individual element, the efficient height, and the brightness of display screen colourity high conformity after the correction is proofreaied and correct the data in real time storage, the reliability height.
Description of drawings
Fig. 1 is the block diagram of system of the present invention.
Embodiment
Be elaborated below in conjunction with the technical scheme of drawings and Examples to invention:
As shown in Figure 1, the present invention includes led controller, LED display, data acquisition module, PC, data transmission module, pointwise correction module, alarm module; Wherein, data acquisition module comprises camera, the YC tester that is connected with PC respectively; The camera lens of described camera, the relative LED display setting respectively of YC tester; Described PC is sent to LED display with original video information by controller and shows, the original pixels parameter that described camera, YC tester are gathered LED display work picture, and the original pixels parameter that collects transferred to PC, described PC is vision signal, YC parameter, order data with the original pixels parameter decomposition, and transfers to the pointwise correction module by transport module; Described vision signal is transmitted by DVI, HDMI data line; Described chroma luminance parameter, order data transmit by the usb data line; After described pointwise correction module is handled the original pixels parameter, the data after obtaining proofreading and correct, and the data after will proofreading and correct are sent to led controller; Described led controller is to original video data and after the data after proofreading and correct handle, data after handling are sent to LED display to be shown, simultaneously processing result information is sent to PC and shows that led controller breaks down, send warning message by alarm module.
Described pointwise correction module comprises FPGA, Video Decoder, video encoder, memory module; Wherein FPGA is connected with Video Decoder, video encoder, memory module respectively; Described Video Decoder receiving video signals, be that binary code inputs to FPGA with video signal decompression, FPGA carries out individual element according to the YC parameter of receiving, order data to the vision signal after decompressing and proofreaies and correct, data after will proofreading and correct then transfer to led controller after by video encoder encodes, the data after storage is proofreaied and correct simultaneously.
Described YC tester comprises optical sensor, color temperature sensor; Wherein optical sensor is used for the brightness of test LED display, and color temperature sensor is used for the colourity of test LED display.
Principle of work of the present invention and process are as follows::
Adopt technical grade high-performance professional camera and YC tester as colourity and brightness acquisition hardware, gather screen body raw data, keep camera to be positioned at the dead ahead of screen, regulate camera heights, make camera aim at screen center.Guarantee that the YC data that collect are undistorted.
The raw data that collects is sent to PC, PC is handled raw data, use level and smooth iteration recursive algorithm, the computing correction coefficient, form the brightness correction parameter of each point of LED display, each point brightness is substantially equal to evenly, and the correction parameter table of each point is deposited in the storer of point-to-point correction system.
Video data is sent in the storer of point-to-point correction system, compare with photo after proofreading and correct, adopt sliding window recursive algorithm, level and smooth iteration recursive algorithm operational data obtains more excellent calibration result, forms the screen body and shows data in real time.
Screen body after proofreading and correct is shown that in real time data send to controller and send card, realize that finally the display screen point by point YC proofreaies and correct this function.
Each module concrete function principle of the present invention is as follows:
Main control module: manage other modules, various data sources are dispatched processing.
The data operation module: the control information that the image information in the DVI reception buffer and host computer were handled compares computing, and YC is compensated, and obtains desirable data, then data is sent to DVI and sends buffer zone.
The DVI receiver module: the video data that sends according to the standard time sequence receiver, video decoding chip of digital video source, and data are put into DVI receive buffer zone.
DVI sending module: the data of DVI buffer zone are sent to video coding chip according to the standard time sequence of digital video source.
Usb communication module: host computer order control data and correction data are received and dispatched and resolved.
SPI access module: SPI Fflash data are read and write control, deposit order data in flash with the correction data and carry out power down protection.
SDRAM data access module: when system normally moves, be used for access and proofread and correct data, call at any time in order to the data operation module, accelerate data operation speed.
Alarm module: led controller or LED display break down, and led controller sends warning message, send sound and light alarm by alarm module.
Claims (5)
1. a LED display YC corrective system is characterized in that: comprise led controller, LED display, data acquisition module, PC, data transmission module, pointwise correction module, alarm module; Wherein, data acquisition module comprises camera, the YC tester that is connected with PC respectively; The camera lens of described camera, the relative LED display setting respectively of YC tester; Described PC is sent to LED display with original video information by controller and shows, the original pixels parameter that described camera, YC tester are gathered LED display work picture, and the original pixels parameter that collects transferred to PC, described PC is vision signal, YC parameter, order data with the original pixels parameter decomposition, and transfers to the pointwise correction module by transport module; After described pointwise correction module is handled the original pixels parameter, the data after obtaining proofreading and correct, and the data after will proofreading and correct are sent to led controller; Described led controller is to original video data and after the data after proofreading and correct handle, data after handling are sent to LED display to be shown, simultaneously processing result information is sent to PC and shows that led controller breaks down, send warning message by alarm module.
2. LED display YC corrective system according to claim 1, it is characterized in that: described pointwise correction module comprises FPGA, Video Decoder, video encoder, memory module; Wherein FPGA is connected with Video Decoder, video encoder, memory module respectively; Described Video Decoder receiving video signals, be that binary code inputs to FPGA with video signal decompression, FPGA carries out individual element according to the YC parameter of receiving, order data to the vision signal after decompressing and proofreaies and correct, data after will proofreading and correct then transfer to led controller after by video encoder encodes, the data after storage is proofreaied and correct simultaneously.
3. LED display YC corrective system according to claim 1, it is characterized in that: described YC tester comprises optical sensor, color temperature sensor; Wherein optical sensor is used for the brightness of test LED display, and color temperature sensor is used for the colourity of test LED display.
4. LED display YC corrective system according to claim 1, it is characterized in that: described camera is the technical grade mm professional camera special.
5. LED display YC corrective system according to claim 1, it is characterized in that: described vision signal is transmitted by DVI, HDMI data line; Described chroma luminance parameter, order data transmit by the usb data line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101942814A CN103268752A (en) | 2013-05-23 | 2013-05-23 | LED display screen brightness and chrominance correction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101942814A CN103268752A (en) | 2013-05-23 | 2013-05-23 | LED display screen brightness and chrominance correction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103268752A true CN103268752A (en) | 2013-08-28 |
Family
ID=49012379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101942814A Withdrawn CN103268752A (en) | 2013-05-23 | 2013-05-23 | LED display screen brightness and chrominance correction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103268752A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464634A (en) * | 2014-12-25 | 2015-03-25 | 西安诺瓦电子科技有限公司 | LED correction effect checking method and relevant correction method and device |
| CN106548749A (en) * | 2017-01-23 | 2017-03-29 | 上海得倍电子技术有限公司 | Independent correction driving means |
| RU2629889C1 (en) * | 2013-09-13 | 2017-09-04 | Сейко Эпсон Корпорейшн | Image display device and method for controlling image display device |
| CN108874597A (en) * | 2017-05-16 | 2018-11-23 | 广达电脑股份有限公司 | Fault detection device and fault detection method |
| CN109003568A (en) * | 2018-09-13 | 2018-12-14 | 天长市辉盛电子有限公司 | LED display point-to-point correction system and method |
| CN110114814A (en) * | 2016-12-20 | 2019-08-09 | 堺显示器制品株式会社 | Correction system, display panel, display device, bearing calibration and program |
| CN112017587A (en) * | 2019-05-30 | 2020-12-01 | 西安诺瓦星云科技股份有限公司 | Display system, display correction method and display correction device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089945A (en) * | 2007-06-20 | 2007-12-19 | 中国科学院长春光学精密机械与物理研究所 | Optical color parameter correction method and device of plane display |
| CN101510393A (en) * | 2009-03-16 | 2009-08-19 | 深圳市元亨光电股份有限公司 | Method for correcting chrominance LED whole colorful display screen based on space vector |
| CN101650914A (en) * | 2009-06-17 | 2010-02-17 | 北京巨数数字技术开发有限公司 | Point-to-point correction system |
| CN101764981A (en) * | 2008-12-23 | 2010-06-30 | 康佳集团股份有限公司 | High-resolution video image controller for embedded LED display screen |
| CN101916539A (en) * | 2010-08-20 | 2010-12-15 | 西安诺瓦电子科技有限公司 | System and method for correcting brightness and chromaticity of LED display screen point by point |
| CN201868072U (en) * | 2009-09-01 | 2011-06-15 | 惠州市德赛智能科技有限公司 | System for correcting brightness and chroma dot by dot on site for whole LED (Light-Emitting Diode) display screen |
-
2013
- 2013-05-23 CN CN2013101942814A patent/CN103268752A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089945A (en) * | 2007-06-20 | 2007-12-19 | 中国科学院长春光学精密机械与物理研究所 | Optical color parameter correction method and device of plane display |
| CN101764981A (en) * | 2008-12-23 | 2010-06-30 | 康佳集团股份有限公司 | High-resolution video image controller for embedded LED display screen |
| CN101510393A (en) * | 2009-03-16 | 2009-08-19 | 深圳市元亨光电股份有限公司 | Method for correcting chrominance LED whole colorful display screen based on space vector |
| CN101650914A (en) * | 2009-06-17 | 2010-02-17 | 北京巨数数字技术开发有限公司 | Point-to-point correction system |
| CN201868072U (en) * | 2009-09-01 | 2011-06-15 | 惠州市德赛智能科技有限公司 | System for correcting brightness and chroma dot by dot on site for whole LED (Light-Emitting Diode) display screen |
| CN101916539A (en) * | 2010-08-20 | 2010-12-15 | 西安诺瓦电子科技有限公司 | System and method for correcting brightness and chromaticity of LED display screen point by point |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2629889C1 (en) * | 2013-09-13 | 2017-09-04 | Сейко Эпсон Корпорейшн | Image display device and method for controlling image display device |
| CN104464634A (en) * | 2014-12-25 | 2015-03-25 | 西安诺瓦电子科技有限公司 | LED correction effect checking method and relevant correction method and device |
| CN110114814A (en) * | 2016-12-20 | 2019-08-09 | 堺显示器制品株式会社 | Correction system, display panel, display device, bearing calibration and program |
| CN106548749A (en) * | 2017-01-23 | 2017-03-29 | 上海得倍电子技术有限公司 | Independent correction driving means |
| CN108874597A (en) * | 2017-05-16 | 2018-11-23 | 广达电脑股份有限公司 | Fault detection device and fault detection method |
| CN108874597B (en) * | 2017-05-16 | 2021-10-08 | 广达电脑股份有限公司 | Fault detection device and fault detection method |
| CN109003568A (en) * | 2018-09-13 | 2018-12-14 | 天长市辉盛电子有限公司 | LED display point-to-point correction system and method |
| CN112017587A (en) * | 2019-05-30 | 2020-12-01 | 西安诺瓦星云科技股份有限公司 | Display system, display correction method and display correction device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103268752A (en) | LED display screen brightness and chrominance correction system | |
| CN203276791U (en) | Brightness and chrominance correction system of LED display screen | |
| CN204705413U (en) | A kind of infreared imaging device of miniaturization | |
| CN104123915B (en) | LED intelligent glass display system unit and system | |
| US10120634B2 (en) | LED display device | |
| CN1263282C (en) | Apparatus for and method of interfacing between an image sensor and an image processor | |
| CN101738827B (en) | USB digital industrial camera | |
| CN101667411A (en) | Dynamic backlight control method and device | |
| CN103065587A (en) | Transmitting-card-free low-cost light emitting diode (LED) synchronous display controlling system | |
| CN108898985B (en) | Master-slave optical fiber video playing system | |
| CN104683773A (en) | Video high-speed transmission method using unmanned aerial vehicle | |
| CN101937654A (en) | LED backlight source device with brightness adaptive function and driving method thereof | |
| US20080048950A1 (en) | LED display system with embedded microprocessors | |
| CN103606363A (en) | LCD type helmet display driving circuit based on FPGA | |
| CN103685884A (en) | Intelligent camera based on on-chip visual system | |
| CN106101530A (en) | A kind of method that high-speed adaptability night vision image strengthens | |
| CN108076295B (en) | Machine vision communication system based on multi-dimensional code | |
| CN202035188U (en) | LED (Light-Emitting Diode) intelligent control system | |
| CN204795295U (en) | Digit high definition camera | |
| CN204090202U (en) | LED intelligent control system | |
| CN103095326B (en) | System and transmission method for data transmission between mobile phone and computer | |
| CN203520411U (en) | Novel two-dimensional bar code scanning platform | |
| CN105338234A (en) | Endoscopic intelligent camera | |
| CN206389459U (en) | Display drive apparatus and display device | |
| CN212624395U (en) | Night vision enhancement intelligent server |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20130828 |