CN101383978B - White balance automatic adjusting system and method for color TV set - Google Patents
White balance automatic adjusting system and method for color TV set Download PDFInfo
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- CN101383978B CN101383978B CN2007101458680A CN200710145868A CN101383978B CN 101383978 B CN101383978 B CN 101383978B CN 2007101458680 A CN2007101458680 A CN 2007101458680A CN 200710145868 A CN200710145868 A CN 200710145868A CN 101383978 B CN101383978 B CN 101383978B
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Abstract
The invention discloses a white balance automatic adjustment system for a color TV set and a method thereof, belonging to the field of system debug of the color TV set, and solving the problem that the white balance of the color TV set is adjusted with low efficiency and high cost. The system comprises a white balance measuring apparatus and the color TV set to be measured, wherein the white balance measuring apparatus is connected with a radio-frequency head of the color TV set to be measured through a cable, and a high-brightness probe and a low-brightness probe of the white balance measuring apparatus are respectively positioned in a high-brightness display area and a low-brightness display area outside a kinescope of the color TV to be measured; and the white balance measuring apparatus is connected with a microprocessor of the color TV to be measured through a communication interface. The method comprises the following steps: a measuring standard for the white balance is set; thewhite balance measuring apparatus sends a television signal used for the measurement of the white balance to the radio-frequency head of the color TV set to be measured; the high-brightness probe andthe low-brightness probe capture white balance measured data; the microprocessor of the color TV set to be measured receives the measured data through the communication interference; and the microprocessor of the color TV set to be measured performs the white balance adjustment according to the measured data and the set measuring standard. The invention is suitable for the white balance adjustment for the color TV set.
Description
Technical field
The present invention relates to the system debug field of color television set, relate in particular to a kind of white balance automatic adjusting system for color TV set and method.
Background technology
Object color can produce color change because of throw light, and the object of shooting under different light rays has different colour temperatures.When we with the naked eye watch this boundless universe, under different light, be identical substantially to the sensation of identical color: during such as rising sun initial rise in the morning, we see the object of a white, feel that it is white; And we are under night dim light, and the white object of seeing feels that it remains white.This is that people's brain has had adaptability to the colour reproduction of the object under the different light rays because human from the later developmental process of being born.But, have no idea can revise the automatically change of light of the picture tube of color television set as human eye, under different light, because the disequilibrium of CCD output causes picture tube colour reproduction distortion: perhaps figure kine bias indigo plant, perhaps red partially or the like.In order to make color television set when normally watching, television image black and white part is clear clearly demarcated, the gorgeous mediation of chrominance section, the whole image color normally, colour cast not, just need debug the white balance circuit of the picture tube of color television set, to reach under any brightness and contrast, the black and white image that picture tube presents has only white, black, grey three looks and does not have other colors, and reaches predetermined colour temperature.
How kinescope white balance adjustment in the existing color television set production process is by manually finishing.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 RGB (RGB) three primary colors show on viewing screen in essence, thereby reach the purpose of adjusting the colour TV white balance circuit.
Manual debugging colour TV white balance, debugging speed is often lower: 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.And human factor also can influence adjustment accuracy, causes the colour TV white balance consistency of being produced relatively poor.
China discloses a kind of white balance automatic adjusting system for color TV set in first to file 98108181.9, as shown in Figure 1.This system is made up of microsystem, white balance measuring instrument, remote control R-T unit, color television set to be measured, corresponding stube cable and debugging software, improve the debugging speed and the precision of colour TV white balance, and then improved the consistency of production efficiency and white balance.But this system need use ancillary equipment such as computer to realize the automatic adjustment of white balance, system complex, and relative cost is higher.
Summary of the invention
Technical problem to be solved by this invention provides a kind of white balance automatic adjusting system for color TV set, can adjust the color television set white balance automatically in high efficiency, low cost ground.
For reaching above-mentioned technical problem, the present invention adopts following technical scheme:
This white balance automatic adjusting system for color TV set comprises white balance measuring instrument and colour TV to be measured;
The white balance measuring instrument is connected with colour TV tuner to be measured by cable, its highlighted probe and low bright probe place highlighted, the low bright viewing area in the colour kinescope to be measured outside respectively, and the microprocessor of colour TV to be measured links to each other with white balance measuring instrument and video register respectively;
The white balance measuring instrument sends white balance measurement TV signal to colour TV tuner to be measured, highlighted probe and low bright probe obtain the white balance measurement data, colour TV microprocessor to be measured receives this measurement data by communication interface, judge the correction of colour TV RGB video register to be measured, adjust the value of corresponding video register according to this correction colour TV microprocessor to be measured.
Further, white balance automatic adjusting system for color TV set of the present invention also comprises the remote control R-T unit, is used for carrying out communication with colour TV microprocessor to be measured, controls the debugging mode of colour TV white balance to be measured.
Wherein, the microprocessor of colour TV to be measured links to each other by serial communication interface with the white balance measuring instrument.
In white balance automatic adjusting system for color TV set of the present invention, the microprocessing systems of colour TV to be measured inside receives measurement data, judge the ratio of red-green-blue, carrying out the colour TV white balance adjusts automatically, thereby improved the efficient of white balance test, and do not need peripheral computer equipment, reduced testing cost.
Another technical problem to be solved by this invention provides a kind of color television set white balance automatic adjusting method, can adjust the color television set white balance automatically in high efficiency, low cost ground.
For achieving the above object, the present invention adopts following technical scheme.
This color television set white balance automatic adjusting method may further comprise the steps:
Set white balance and adjust standard;
The white balance measuring instrument sends white balance measurement TV signal to colour TV tuner to be measured;
Highlighted probe and low bright probe obtain the white balance measurement data from highlighted, the low bright viewing area in the colour kinescope to be measured outside;
Colour TV microprocessor to be measured receives this measurement data by communication interface;
Colour TV microprocessor to be measured is handled described measurement data, obtains the correction of colour TV RGB video register to be measured;
Adjust the value of corresponding video register according to this correction colour TV microprocessor to be measured.
Then, the value of adjusted video register is stored.
In the white balance automatic adjusting system for color TV set of the present invention, the value of adjusted video processor register is stored back further comprising the steps of:
Judge whether to satisfy the setting requirement according to the new measurement data of white balance measuring instrument;
Do not set requirement if satisfy, repeat the white balance adjustment, satisfy until the white balance data and set requirement.
After the white balance adjustment of a passage finishes, further comprising the steps of:
Detect other passage white balance and whether satisfy the setting requirement;
Do not set requirement if a certain passage does not satisfy, then switch to this passage and carry out the white balance adjustment.
The baud rate that the agreement of communication is used between colour TV microprocessor to be measured and the white balance tester is 4800, data bit 8, position of rest 1.
Before the white balance measuring instrument acceptance test data, the remote control R-T unit sends instruction by colour TV microprocessor to be measured, and it is debugging mode that television set is set.
Because color television set white balance automatic adjusting method of the present invention is utilized the microprocessing systems of colour TV to be measured inside to carry out the colour TV white balance and is adjusted automatically, thereby do not need peripheral computer equipment, reduce the link that peripheral computer equipment and colour TV to be measured carry out communication, improved the efficient of producing.
Description of drawings
Fig. 1 is a white balance automatic adjusting system for color TV set schematic diagram in the prior art;
Fig. 2 is a white balance automatic adjusting system for color TV set schematic block diagram of the present invention;
Fig. 3 is a color television set white balance automatic adjusting method flow chart of the present invention.
Embodiment
Be described in detail below in conjunction with the embodiment of accompanying drawing white balance automatic adjusting system for color TV set of the present invention and method.
As shown in Figure 2, white balance automatic adjusting system for color TV set of the present invention comprises white balance measuring instrument and colour TV to be measured, and the white balance measuring instrument is connected with colour TV tuner to be measured by cable, sends white balance measurement TV signal to it; The highlighted probe of white balance measuring instrument and low bright probe place highlighted, the low bright viewing area in the colour kinescope CRT to be measured outside respectively, to obtain the white balance measurement data; Colour TV microprocessor to be measured is connected by communication interface with the white balance measuring instrument, and present embodiment adopts the RS232 serial ports, receives the measurement data that the white balance measuring instrument is obtained.Colour TV microprocessor to be measured also links to each other with video register in the video processor.Present embodiment is adjusted automatically owing to the microprocessing systems that utilizes colour TV to be measured inside carries out the colour TV white balance, thereby does not need peripheral computer equipment, has reduced testing cost.
For the ease of the self-adjusting process of Artificial Control white balance, white balance automatic adjusting system for color TV set of the present invention also comprises the remote control R-T unit with colour TV microprocessor to be measured communication, be used for controlling the white balance adjustment process, as beginning, end or time-out etc.
The interior programming of ROM in the microprocessing systems of colour TV to be measured (read-only memory) has white balance to adjust program and remote control control program software automatically, be used for controlling the CPU (microprocessor) and the remote control R-T unit of microprocessing systems, the measurement data of dialogue balance measuring instrument is carried out data processing and corresponding white balance adjustment.
Color television set white balance automatic adjusting method of the present invention may further comprise the steps as shown in Figure 3:
S1, television set is set is debugging mode, the adjustment of beginning white balance.
S2, setting white balance are adjusted standard.
S3, white balance measuring instrument send white balance measurement TV signal to colour TV tuner to be measured.
The highlighted probe of S4, white balance measuring instrument and low bright probe obtain the white balance measurement data respectively from highlighted, the low bright viewing area of colour TV CRT to be measured.
S5, colour TV microprocessor to be measured receive this measurement data by the RS232 serial ports.
S6, judge that according to described measurement data whether white balance satisfies the requirement of setting, and just finishes the white balance adjustment if meet the demands; Otherwise carry out the white balance adjustment.Again begin white balance adjustment next time from S3 then.
In the present embodiment, when judging that according to described measurement data white balance does not satisfy requiring of setting, the concrete grammar that colour TV microprocessor to be measured carries out the white balance adjustment is: colour TV microprocessor to be measured is handled described measurement data, obtains the correction of the RGB video register of colour TV video processor.According to the value of this correction colour TV microprocessor adjustment to be measured corresponding video register, then the value of adjusted video register is stored.
Further, present embodiment is when beginning, and also will at first determine the agreement of communication between white balance measuring instrument and the colour TV microprocessor to be measured: baud rate is 4800, data bit 8, position of rest 1.
Next write the program of white balance automatic adjusting method, finish writing the interrupt function of serial ports earlier, carry out the setting of initialization PORT COM, the control command code to each RS-232C port defines then, finishes the operation that oneself needs; Write the remote control control of user's operation, adopt factory's remote controller of the present usefulness of electrical equipment limited company of Hisense, take out the control button that some buttons are wherein adjusted as test automatically, white balance.
Then white balance is adjusted program and the programming of remote control control program software automatically in the microprocessing systems of colour TV to be measured.
Certainly, color television set white balance automatic adjusting method of the present invention can become the part of color television set complete machine automatic test:
After color television set complete machine automatic test began, tester detected whether all passage (for example TV passage, video channel) tests finish, if test is not finished, then switches to corresponding passage.
Whether the white balance that detects this passage meets established standards, if do not meet established standards, then the microprocessor adjustment of colour TV to be measured changes the white balance of passage, sets requirement until satisfying, and finishes this passage white balance adjustment.
Color television set white balance automatic adjusting method of the present invention thus can become the part of color television set complete machine automatic test, and other automatic test of color television set and the adjustment of white balance are once finished like this, have improved production efficiency.
Claims (9)
1. a white balance automatic adjusting system for color TV set comprises white balance measuring instrument and colour TV to be measured, it is characterized in that:
The white balance measuring instrument is connected with colour TV tuner to be measured by cable, its highlighted probe and low bright probe place highlighted, the low bright viewing area in the colour kinescope to be measured outside respectively, and the microprocessor of colour TV to be measured links to each other with white balance measuring instrument and video register respectively;
The white balance measuring instrument sends white balance measurement TV signal to colour TV tuner to be measured, highlighted probe and low bright probe obtain the white balance measurement data, colour TV microprocessor to be measured receives this measurement data by communication interface, judge the correction of colour TV RGB video register to be measured, adjust the value of corresponding video register according to this correction colour TV microprocessor to be measured.
2. white balance automatic adjusting system for color TV set according to claim 1 is characterized in that also comprising the remote control R-T unit, is used for carrying out communication with colour TV microprocessor to be measured, controls the debugging mode of colour TV white balance to be measured.
3. white balance automatic adjusting system for color TV set according to claim 1 is characterized in that the microprocessor of colour TV to be measured links to each other by serial communication interface with the white balance measuring instrument.
4. color television set white balance automatic adjusting method is characterized in that may further comprise the steps:
Set white balance and adjust standard;
The white balance measuring instrument sends white balance measurement TV signal to colour TV tuner to be measured;
Highlighted probe and low bright probe obtain the white balance measurement data from highlighted, the low bright viewing area in the colour kinescope to be measured outside;
Colour TV microprocessor to be measured receives this measurement data by communication interface;
Colour TV microprocessor to be measured is handled described measurement data, obtains the correction of colour TV RGB video register to be measured;
Adjust the value of corresponding video register according to this correction colour TV microprocessor to be measured.
5. color television set white balance automatic adjusting method according to claim 4, it is characterized in that colour TV microprocessor to be measured is adjusted the value of corresponding video register after, also need the value of adjusted video register is stored.
6. color television set white balance automatic adjusting method according to claim 5 is characterized in that the value of adjusted video register is stored back further comprising the steps of:
Judge whether to satisfy the setting requirement according to the new measurement data of white balance measuring instrument;
Do not set requirement if satisfy, repeat the white balance adjustment, satisfy until the white balance data and set requirement.
7. according to claim 4,5 or 6 described color television set white balance automatic adjusting method, after the white balance adjustment that it is characterized in that a passage finishes, further comprising the steps of:
Detect other passage white balance and whether satisfy the setting requirement;
If a certain passage does not satisfy, switch to this passage and carry out the white balance adjustment.
8. color television set white balance automatic adjusting method according to claim 4 is characterized in that the baud rate of the agreement use of communication between colour TV microprocessor to be measured and the white balance tester is 4800, data bit 8, position of rest 1.
9. color television set white balance automatic adjusting method according to claim 4 is characterized in that: before the white balance measuring instrument acceptance test data, the remote control R-T unit sends instruction by colour TV microprocessor to be measured, and it is debugging mode that television set is set.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101458680A CN101383978B (en) | 2007-09-04 | 2007-09-04 | White balance automatic adjusting system and method for color TV set |
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| CN2007101458680A CN101383978B (en) | 2007-09-04 | 2007-09-04 | White balance automatic adjusting system and method for color TV set |
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| CN101383978A CN101383978A (en) | 2009-03-11 |
| CN101383978B true CN101383978B (en) | 2010-06-23 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103730096B (en) * | 2013-12-31 | 2016-09-14 | 深圳市华星光电技术有限公司 | White balance adjustment method and system, liquid crystal display manufacture method |
| CN105208459B (en) * | 2015-09-09 | 2019-05-21 | 余芳 | The method of the color reducing power of television set is adjusted by set-top box |
| CN106301922B (en) * | 2016-08-16 | 2020-02-04 | 青岛海信宽带多媒体技术有限公司 | Method and device for adjusting Tuner state |
| CN107454393B (en) * | 2017-09-22 | 2019-12-27 | 上海帆声图像科技有限公司 | Method for setting white balance parameters of television |
| CN107465904A (en) * | 2017-09-22 | 2017-12-12 | 上海帆声图像科技有限公司 | Television set white balance automatic adjusting method |
| CN109361911A (en) * | 2018-12-21 | 2019-02-19 | 广州朗国电子科技有限公司 | Wireless white balance adjusting method and system |
| CN110763935B (en) * | 2019-10-25 | 2021-12-03 | 广州视源电子科技股份有限公司 | Anti-interference test method and test system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206995A (en) * | 1998-05-01 | 1999-02-03 | 四川长虹电子集团公司 | White balance automatic adjusting system for color TV set |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206995A (en) * | 1998-05-01 | 1999-02-03 | 四川长虹电子集团公司 | White balance automatic adjusting system for color TV set |
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Address after: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee after: Hisense Video Technology Co.,Ltd. Address before: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee before: HISENSE ELECTRIC Co.,Ltd. |
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