CN1061204C - White balance automatic adjusting system for color TV set - Google Patents
White balance automatic adjusting system for color TV set Download PDFInfo
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- CN1061204C CN1061204C CN98108181A CN98108181A CN1061204C CN 1061204 C CN1061204 C CN 1061204C CN 98108181 A CN98108181 A CN 98108181A CN 98108181 A CN98108181 A CN 98108181A CN 1061204 C CN1061204 C CN 1061204C
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- white balance
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Abstract
The present invention relates to a system for automatically adjusting the white balance of a color TV set, which is composed of a hardware debugging system and debugging software, wherein the hardware debugging system of the system is composed of a microcomputer system, a white balance measuring apparatus, a remote control receiving and transmitting device, a color TV set to be measured and a corresponding connecting cable; the debugging software comprises remote control software and software for automatically debugging the white balance of a color TV set; the remote control software is used for the color TV set to be measured, and the software for automatically debugging the white balance of a color TV set is used for a microcomputer. The present invention has the advantages of obvious effects, speed and precision improvement of white balance debugging of an on-line color TV set, production efficiency improvement, production cost reduction and labor intensity reduction of on-line detecting workers.
Description
The present invention relates to the system debug field of the color television set of online production.
In the total debug process of the machine system of colour TV production line, need debug the white balance circuit (being called for short the colour TV white balance) of the picture tube of television set, make color television set under any brightness and contrast, the black-and-white image that picture tube a presents adularescent, black and grey and do not have other colors all reach predetermined colour temperature.Its objective is that for during normally watching at television set television image black and white part is clear clearly demarcated, the gorgeous mediation of chrominance section, the whole image color is normal, not colour cast.
Colour kinescope white balance debugging process on the existing colour TV production line is basically by manually finishing.Television set has been considered the limitation of production debug process during the design, and perhaps design process is subjected to the television set hardware constraints, makes television set can only adopt manual type debugging colour TV white balance.Concrete method is: the workman is by adjusting five related potential devices of television set video amplifier circuit, correspondingly adjust the cut-ff voltage and the drive current of each primary colour signal video amplifier circuit, be exactly to change the ratio that red-green-blue shows on viewing screen in essence, thereby reach the purpose that the colour TV white balance circuit is adjusted.
Manual debugging colour TV white balance has a lot of weak points, it is evident that debugging speed and accuracy problems most.Adjust several potentiometers that are mutually related by hand, cooperatively interacting reaches the regulation white balance, and the most skilled workman also needed for one, 20 seconds.Human factor influences adjustment accuracy, makes consistency of product unsatisfactory.In addition, increase by five potentiometers, not only increase the complete machine cost, also increase by five out of order factors.
Purpose of the present invention is exactly at above deficiency, provides a kind of color television set white balance Remote Control Automatic Adjustment System.
The object of the present invention is achieved like this:
The present invention is made up of hardware debug system and debugging software.Its hardware debug system is made up of microsystem, white balance measuring instrument, remote control R-T unit, color television set to be measured and corresponding stube cable; Debugging software comprises remote control of colour television set software to be measured and the automatic debugging software of color television set white balance.
The position annexation and the effect of hardware debug of the present invention system are respectively:
One cover microsystem is connected with white balance measuring instrument, remote control R-T unit, is used to control the work of the automatic debugging software of online color television set white balance;
A white balance measuring instrument is connected with the tuner of microsystem, colour TV, the highlighted probe of the white balance meter that links to each other with microcomputer by cable and low bright probe place highlighted, the low bright viewing area in the outside of colour kinescope CRT respectively, be used to the colour temperature measuring the white balance TV signal of online color television set and measure online color television set or with the deviation of standard color temperature;
One cover remote control R-T unit is connected with microsystem, is used to connect microcomputer and online color television set carries out exchanges data, controls the debugging mode of television set white balance, carries out the automatic adjustment of online color television set white balance.
A kind of method of adjustment of color television set white balance adjustment system, contain following steps:
Receive the test data of white balance measuring instrument (117) by RS-232 interface;
Microcomputer carries out data processing, obtains the correction of video processor (104) corresponding registers, and correction is converted to control command, and the infrared remote-control emitter (113) by remote control R-T unit (116) sends remote control command;
The CPU of television set (108) receives above-mentioned remote control command by infrared remote control receiver (110), and execution remote control command, revise the cut-ff voltage of video processor (104) and the value of drive current, send the remote control answer signal by infrared remote-control emitter (111) then, microcomputer receives remote control by receiver of remote-control sytem (112) and replys, and confirms the implementation status of remote control command;
Judge whether white balance measuring instrument (117) test data satisfies the setting requirement;
Repetitive cycling is adjusted, and satisfies until the white balance data and sets requirement, and debugging stops.
The method of adjustment of color television set white balance adjustment system, also contain following content:
Before white balance measuring instrument (117) the acceptance test data, microcomputer sends instruction, the CPU of color television set (108) detects the remote signal from infrared remote control receiver (110), through being decoded as the special guidance command under the production model, carry out debug command by the inner iic bus of television set, it is debugging mode that television set promptly is set.
Debugging software system of the present invention and effect are respectively:
The online remote control of colour television set software of one cover is used for reception, the processing of remote-control transmitting and special remote control command;
The automatic debugging software of the one online color television set white balance of cover is used for the Remote Control Automatic debug process control of online color television set white balance.
Microcomputer sends special remote control mode and receives remote control by the remote control R-T unit and replys, and when television set does not flow down when in place from the last station of production line, microcomputer can not receive replys.In case television set puts in place, the remote control R-T unit is replied normally, and microcomputer makes the relevant parameter of television set initialization by sending special guidance command at once, and promptly white balance related register initial value data is provided with.Microcomputer receives the measurement data of white balance measuring instrument by RS-232 interface, judge on the television set RGB component proportion of all kinds what thus, and extrapolate absolute value and the increase direction that related register should change, microcomputer notifies online television CPU to carry out refreshing of white balance related register by the remote control R-T unit in the mode of guidance command then.After receiving orders, also carries out by television set, finally be presented as the change of black and white image colour temperature on the television screen, the change of colour temperature still is reflected at the change of white balance measuring instrument measurement data, microcomputer can receive measurement data by RS-232 interface, and judge whether the new white balance state of TV has reached desired value, if can't meet the demands then can constantly repeat above step, till the white balance data meet the demands.
Adopt the present invention, effect is that significantly debugging speed and precision that it has improved online colour TV white balance have improved production efficiency, have reduced production cost; Also alleviated simultaneously online detection working strength of workers.Through on probation on the production line of Changhong factory, make and finish the average speed that a color television set white balance is adjusted, by every need second more than 20 of artificial hand wage adjustment examination, being reduced to every only needs about ten seconds.The precision of color television set white balance adjustment is a chromaticity coordinates deviation 1%, and consistency has also obtained improving preferably.If mix abundant class WINDOWS user interface and graphical display,, also can observe the adjustment process of colour TV white balance simultaneously intuitively just configuration-system parameter easily makes the on-line operation personnel can carry out the control of colour TV white balance debugging easily.
Fig. 1 is that hardware debug of the present invention system connects schematic block diagram
Fig. 2 is the circuit connection diagram of remote control R-T unit of the present invention
Fig. 3 is the flow chart of remote control of colour television set software of the present invention
Fig. 4 is the main flow chart of the automatic debugging software of color television set white balance of the present invention
The hardware debug system of Fig. 5 embodiments of the invention connects schematic block diagram
The present invention is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, hardware system of the present invention comprises compositions such as color television set 119, white balance measuring instrument 117, remote control R-T unit 116 and microsystem 118 a cover debug hardware system.The software that relates to comprises remote control of colour television set software and the automatic debugging software of white balance.It is main means that the present invention adopts remote-control communication, and the co-ordination by a plurality of software and hardwares is to reach the self-adjusting purpose of white balance.
Fig. 2 is a remote control R-T unit circuit connection diagram.Standard 25 core parallel port plugs 201 (pass) connect the LPTx ports of microcomputer 119, and another standard 25 core plugs 202 (pin type) not only prolong the microcomputer parallel port relatively, and are connected with infrared remote control receiver 112 with infrared remote-control emitter 113.Infrared remote control receiver 112 is given microcomputer after with the remote signal demodulation that receives, and microcomputer can carry out software decoding by the parallel port, obtains remote information.Microcomputer carries out the modulation of guidance command software by the parallel port, sends guidance command through infrared remote-control emitter 113.Infrared remote control receiver 112 that remote control reception and emitter 116 contain and infrared remote-control emitter 113 are connected with microcomputer 118 by cable; Color television set infrared remote control receiver 110 is connected with the CPU108 of color television set with color television set infrared remote-control emitter 111; Infrared remote control receiver 112 in remote control reception and the emitter 116 and infrared remote-control emitter 113 respectively with color television set in infrared remote control receiver 110 and infrared remote-control emitter 111 form corresponding answering system, finish the communication task of automatic debugging.Microcomputer carries out exchanges data by remote control R-T unit 116 and television set just, and control television set white balance state reaches the self-adjusting purpose of white balance.
The software modulation of remote-control transmitting.It is the effect of infrared signal that infrared remote-control emitter 113 among Fig. 2 only plays electrical signal conversion, and the sequencing control of remote signal and the modulation signal of fixed frequency are finished by microcomputer software.This part program requires microcomputer CPU to have the higher speed of service.
The software decoding that remote control receives.Infrared remote control receiver 112 among Fig. 2 is converted to the signal of telecommunication with the infrared remote-controlled signal that receives, and delivers to the microcomputer parallel port, and microcomputer carries out software decoding according to the remote control coding rule.
The white balance measuring instrument is born two tasks in native system, first generation white balance is measured and use TV signal, its two be the measurement television set colour temperature or with the deviation of standard color temperature.The white balance test signal is given the tuner 101 of tested television set, television set shows corresponding image on CRT106, the highlighted probe 115 of white balance measuring instrument and low bright probe 114 be the high low-light level part of alignment images respectively, and measurement result is delivered to the microcomputer from RS-232 interface after digitlization and handled.In the white balance adjustment process, because the primary color component of television image constantly changes, cause that high low-light level brightness partly changes, therefore require measuring instrument to have the function that high low-light level is followed the tracks of simultaneously, can regulate the high brightness levels of test signal automatically and decide to guarantee high low-light level weighing apparatus.
In the design process of remote control of colour television set software, consider the remote-control communication of white balance self-regulating process, in remote control software, increased the reception of remote-control transmitting and special remote control command, execution of program modules.
The related procedure of remote control software shown in Figure 3 contains following program.In each major cycle that remote control software is carried out, the remote signal (corresponding program circuit S2) that the CPU processor 108 of colour TV detects from infrared remote control receiver 110, after being decoded as special guidance command (debug command under the production model) (corresponding program circuit S3 and S4), carry out debug command (corresponding program circuit S5) by the inner iic bus of television set, revise the related register data of video processor 104, promptly revise the drive current and the cut-ff voltage of each primary colour signal of white balance.The execution result of instruction is presented as that the colour temperature of colour TV television set CRT picture tube 106 changes.After the CPU of colour TV executes remote control command, send remote control answer signal (corresponding program circuit S9) by infrared remote-control emitter 111, whether the sender normally carries out guidance command with the notice guidance command.
Fig. 4 is the main flow process of the automatic debugging software of this white balance.Through repeatedly adjusting cyclic process, adjust (corresponding software control flow process S2A) up to white balance.Finish an adjustment process and will pass through following steps: microcomputer receives the test data (corresponding program circuit S5A) of white balance measuring instrument 117 by RS-232 interface, carry out data processing and obtain the correction (corresponding program circuit S7A) of corresponding registers in the video processor 104, correction is converted to control command (corresponding program circuit S8A), infrared remote-control emitter 113 by remote control R-T unit 116 sends remote control command (corresponding program circuit S9A), the CPU108 of color television set receives guidance command by infrared remote control receiver 110, carry out the cut-ff voltage of guidance command correction video processor 104 and the value of drive current register, send the remote control answer signal by infrared remote-control emitter 111 then, microcomputer is replied by the infrared remote control receiver 112 reception remote controls of infrared remote control R-T unit 116, confirms the implementation status of remote control command.
Its microsystem of a kind of online color television set white balance adjustment system of the present invention adopts dominant frequency 133MHZ and above Pentium 586 microcomputers, and operating system adopts above version of DOS6.0 or the above version of WINDOWS95.
Fig. 5 is that the hardware debug system of embodiments of the invention connects schematic block diagram.
The present invention is through the on probation and checking at Changhong factory colour TV production line, and effect is better.Embodiment adopts the NC-6 movement of the Toshiba Corp's production with the automatic debug hardware of white balance basis, cooperates remote control white balance of the present invention to adjust software; Selecting dominant frequency for use is Pentium 586 microcomputers of 133MHZ, and its operating system is DOS6.0; The 2849 type white balance measuring instruments that the white balance measuring instrument selects for use Japanese Nitsuki company to produce, it is 9300K that white balance is adjusted colour temperature; The RPM-676CBR-S type infrared remote control receiver that the SIR-56SB3F type infrared remote-control emitter that infrared remote-control emitter among the present invention adopts Japanese RDHM company to produce, infrared remote control receiver adopt Japanese RDHM company to produce.
Claims (3)
1, a kind of white balance automatic adjusting system for color TV set comprises colour TV to be measured, white balance measuring instrument, remote control R-T unit, microcomputer, it is characterized in that:
A white balance measuring instrument sends white balance by cable to the colour TV tuner and measures and use TV signal, and by highlighted probe and hang down the online colour TV colour temperature of bright probe measurement or with the deviation of standard color temperature;
The microcomputer that automatic debugging software of color television set white balance and remote control software are housed, it receives the measurement result of white balance measuring instrument by the RS-232 cable, judge that television set is red, the proportional numerical value of edge, blue each colouring component, and extrapolate the absolute value that television set white balance data should the change amount and increase direction; The reception of remote-control transmitting function and special remote control command, processing capacity; Control the Remote Control Automatic debug process of online color television set white balance;
One cover remote control R-T unit, microcomputer sends the absolute value that the white balance data should the change amount and increases the signal of direction to the CPU of television set by this remote control R-T unit;
The annexation of system is that microcomputer is connected with white balance measuring instrument (117), remote control R-T unit; White balance measuring instrument (117) is connected with the tuner (101) of colour TV to be measured, and the highlighted probe (115) of white balance measuring instrument and low bright probe (114) place the outside of colour kinescope CRT to be measured (106) respectively; The infrared remote control receiver (112) of remote control R-T unit (116) and infrared remote-control emitter (113) stand opposite each other at a distance with being subjected to colour TV CPU (108) infrared remote-control emitter (111) and infrared remote control receiver (110) control, colour TV to be measured respectively.
2, a kind of method of adjustment that is used for the described color television set white balance adjustment system of claim 1, contain following steps:
Receive the test data of white balance measuring instrument (117) by RS-232 interface;
Microcomputer carries out data processing, obtains the correction of video processor (104) corresponding registers, and correction is converted to control command, and the infrared remote-control emitter (113) by remote control R-T unit (116) sends remote control command;
The CPU of television set (108) receives above-mentioned remote control command by infrared remote control receiver (110), and execution remote control command, revise the cut-ff voltage of video processor (104) and the value of drive current, send the remote control answer signal by infrared remote-control emitter (111) then, microcomputer receives remote control by receiver of remote-control sytem (112) and replys, and confirms the implementation status of remote control command;
Judge whether white balance measuring instrument (117) test data satisfies the setting requirement;
Repetitive cycling is adjusted, and satisfies until the white balance data and sets requirement, and debugging stops.
3, the method for adjustment of color television set white balance adjustment system as claimed in claim 2 is characterized in that:
Before white balance measuring instrument (117) the acceptance test data, microcomputer sends instruction, the CPU of color television set (108) detects the remote signal from infrared remote control receiver (110), through being decoded as the special guidance command under the production model, carry out debug command by the inner iic bus of television set, it is debugging mode that television set promptly is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98108181A CN1061204C (en) | 1998-05-01 | 1998-05-01 | White balance automatic adjusting system for color TV set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98108181A CN1061204C (en) | 1998-05-01 | 1998-05-01 | White balance automatic adjusting system for color TV set |
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| Publication Number | Publication Date |
|---|---|
| CN1206995A CN1206995A (en) | 1999-02-03 |
| CN1061204C true CN1061204C (en) | 2001-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98108181A Expired - Fee Related CN1061204C (en) | 1998-05-01 | 1998-05-01 | White balance automatic adjusting system for color TV set |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100592807C (en) * | 2005-10-27 | 2010-02-24 | 海尔集团公司 | Method for regulating color temp effect of TV set |
| CN101383978B (en) * | 2007-09-04 | 2010-06-23 | 青岛海信电器股份有限公司 | White balance automatic adjusting system and method for color TV set |
| CN101646098B (en) * | 2008-08-08 | 2012-10-10 | 深圳Tcl新技术有限公司 | Automatic test method and automatic test system |
| CN102136233B (en) * | 2010-01-22 | 2015-02-11 | 康佳集团股份有限公司 | White balance data adjusting system and method as well as single step infrared adjuster thereof |
| CN102364954A (en) * | 2011-11-07 | 2012-02-29 | 天津三星电子有限公司 | Method for automatically regulating picture quality of television |
| CN102790887A (en) * | 2012-07-25 | 2012-11-21 | 广州视源电子科技股份有限公司 | Automatic white balance regulation system and method of liquid crystal television |
| CN104683778A (en) * | 2015-02-10 | 2015-06-03 | 四川长虹电器股份有限公司 | Automatic white balance online regulation system and method for flat-panel display product |
| CN105118408A (en) * | 2015-08-19 | 2015-12-02 | 深圳Tcl新技术有限公司 | Method, device, and system for adjusting white balance of display device |
| CN105611263B (en) * | 2015-12-22 | 2018-06-26 | 广州视源电子科技股份有限公司 | White balance on-line tuning method and its system |
| CN106713980B (en) * | 2016-11-29 | 2019-09-20 | 广州视源电子科技股份有限公司 | Television set attribute adjustment method and device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0800318A2 (en) * | 1996-04-02 | 1997-10-08 | Sony Corporation | White balance control apparatus |
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- 1998-05-01 CN CN98108181A patent/CN1061204C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0800318A2 (en) * | 1996-04-02 | 1997-10-08 | Sony Corporation | White balance control apparatus |
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| CN1206995A (en) | 1999-02-03 |
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