CN107454393B - Method for setting white balance parameters of television - Google Patents
Method for setting white balance parameters of television Download PDFInfo
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- CN107454393B CN107454393B CN201710866234.8A CN201710866234A CN107454393B CN 107454393 B CN107454393 B CN 107454393B CN 201710866234 A CN201710866234 A CN 201710866234A CN 107454393 B CN107454393 B CN 107454393B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Color Television Image Signal Generators (AREA)
- Processing Of Color Television Signals (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention discloses a method for setting white balance parameters of a television, which comprises the following steps: a first learning mode step: burning the set white balance initial value into a television set as a preset mode; a second learning mode step: reading the x value, y value and Lv value of the television, calculating the gain value and the offset value which are closer to the white point coordinate in the preset mode relative to the current gain value and the current offset value by using the read x value, y value and Lv value of the television, and burning the calculated gain value and offset value back to the television; and repeating the second learning mode step, and stopping repeating the second learning mode step when the current gain value and current offset value of the television set satisfy a predetermined error range with respect to the gain value and offset value of the white point coordinate in the predetermined mode.
Description
Technical Field
The invention relates to the field of television or display detection, in particular to a method for setting a white balance parameter of a television.
Background
At present, in the television manufacturing industry in China, when the assembled television is detected before leaving a factory, workers are used for detecting each function of the television one by one in a production line. The intellectualization of the television becomes the mainstream, and almost the television produced at present carries communication ports such as a network port, a USB and the like, so that conditions are provided for the communication between the host and the television, and the automatic adjustment of white balance is realized.
The existing white balance adjustment adopts two modes, one mode is manual adjustment, the processing speed of the mode is slow, strong professional knowledge is needed, and batch operation cannot be realized; the other mode is automatic adjustment, the adjustment time of the mode is long, the precision is not high, the range cannot be determined for brightness adjustment, and the production efficiency of products is influenced.
Moreover, in the prior art, on one hand, the time for manually adjusting the white balance of the television is long, on the other hand, each television manually adjusts the white balance, and each television screen has certain difference, and if the white balance values in the televisions are the same, the same group of pictures are played in a market after all the televisions are turned on, so that the pictures in the same group have different colors.
In addition, on the production line, different models can be produced in the same production, sometimes two models are changed to three models in one day, and screens adopted by televisions are different due to different models, so that different types of screens are different greatly.
Disclosure of Invention
In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a method for setting white balance parameters of a television, which can replace production line detection workers and provide possibility for realizing a semi-automatic production line and a full-automatic production line.
In order to achieve the above object, the present invention provides a method for setting white balance parameters of a television, comprising:
a first learning mode step: burning the set white balance initial value into a television set as a preset mode;
a second learning mode step: reading the x value, y value and Lv value of the television, calculating the gain value and the offset value which are closer to the white point coordinate in the preset mode relative to the current gain value and the current offset value by using the read x value, y value and Lv value of the television, and burning the calculated gain value and offset value back to the television;
and repeating the second learning mode step, and stopping repeating the second learning mode step when the current gain value and current offset value of the television set satisfy a predetermined error range with respect to the gain value and offset value of the white point coordinate in the predetermined mode.
Preferably, the method for setting the white balance parameter of the television further comprises:
a third learning mode step: and recording the current gain value and the current offset value of the television into a television production line configuration file as initial white balance values under the condition that the current gain value and the current offset value of the television relative to the gain value and the offset value of the white point coordinate in the preset mode meet a preset error range.
Preferably, the second learning mode step is repeatedly performed no more than a first predetermined number of times.
Preferably, the first predetermined number of times is 15.
Preferably, the repeated execution of the second learning mode step is stopped when the number of times the second learning mode step is repeatedly executed reaches a second predetermined number of times.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
A more complete understanding of the present invention, and the attendant advantages and features thereof, will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:
fig. 1 is a flowchart of a television white balance parameter setting method according to a first preferred embodiment of the present invention.
Fig. 2 is a flowchart of a television white balance parameter setting method according to a second preferred embodiment of the present invention.
Fig. 3 is a flowchart of a television white balance parameter setting method according to a third preferred embodiment of the present invention.
It is to be noted, however, that the appended drawings illustrate rather than limit the invention. It is noted that the drawings representing structures may not be drawn to scale. Also, in the drawings, the same or similar elements are denoted by the same or similar reference numerals.
Detailed Description
< first preferred embodiment >
Fig. 1 is a flowchart of a television white balance parameter setting method according to a first preferred embodiment of the present invention.
As shown in fig. 1, the method for setting white balance parameters of a television according to a first preferred embodiment of the present invention includes:
first step S11: a signal source is accessed into a television through a network cable, and is adjusted to be under a corresponding signal source channel of the television, and a factory unique identification code of the television is scanned by a code scanning gun;
specifically, for example, the first step S11 may be performed manually by a line worker.
Second step S12: judging whether the television belongs to a new type or not according to the unique identification code obtained by scanning;
specifically, for example, the new model refers to a model never produced by the production line. Or, for example, the new model refers to a model that has not been produced after a production line is updated (e.g., new instruments are brought online).
Third step S13: entering a learning mode program under the condition that the television is judged to belong to a new type;
fourth step S14: and entering an adjustment mode program under the condition that the television is judged not to belong to the new type.
It can be seen that the white balance adjustment provided by the invention is divided into two algorithms or modes, the first algorithm or mode is a learning mode and is a new model which is not produced by a production line, and because the model is a new model and the first model belongs to a trial production stage, the production beat is slow (for example, about five minutes), and sufficient time is provided for learning and adjusting an optimal parameter; the second algorithm or mode is an adjusting mode which is produced by a production line, and the white balance of the television can be quickly and accurately adjusted through the algorithm and the configuration file generated by the learning mode.
< second preferred embodiment >
Fig. 2 is a flowchart of a television white balance parameter setting method based on a learning mode according to a second preferred embodiment of the present invention. The flow corresponds to the learning mode routine of the third step S13.
As shown in fig. 2, the television white balance parameter setting method based on the learning mode according to the second preferred embodiment of the present invention includes:
first learning mode step S21: burning the set white balance initial value into a television set as a preset mode;
second learning mode step S22: reading the x value, y value and Lv value of the television, calculating the gain value and the offset value which are closer to the white point coordinate in the preset mode relative to the current gain value and the current offset value by using the read x value, y value and Lv value of the television, and burning the calculated gain value and offset value back to the television;
the second learning mode step S22 is repeatedly performed and the second learning mode step S22 is stopped from being repeatedly performed when the current gain value and current offset value of the television set satisfy a predetermined error range with respect to the gain value and offset value of the white point coordinate in the predetermined mode.
Preferably, the second learning mode step S22 is repeatedly performed no more than a first predetermined number of times. For example, the first predetermined number of times is 15 times. It is further preferable that the repeated execution of the second learning mode step S22 is stopped when the number of times the second learning mode step S22 is repeatedly executed reaches a second predetermined number of times.
Third learning mode step S23: and recording the current gain value and the current offset value of the television into a television production line configuration file as initial white balance values under the condition that the current gain value and the current offset value of the television relative to the gain value and the offset value of the white point coordinate in the preset mode meet a preset error range.
In a specific example, for example, the following flow steps may be performed: inserting a signal source into a television, enabling the television to flow into a detection machine, adjusting the television to a preset mode (such as a 'cool mode') through a network cable by a detection host, controlling the signal source to enable the television to print a white field by the detection host, burning a set initial value required by a client into the television through the network cable (generally, the value is a median value of an adjustable range of the television), reading an x value, a y value and an Lv value of the television by using a color analyzer (such as 'CA 310'), calculating the values to obtain a Gain value (Gain value) and an Offset value (Offset value) which are closer to a white point coordinate in the preset mode, controlling the color analyzer to read the x value, the y value and the Lv value once again when the value is burnt back to the television, ending when an error range is met, otherwise, circulating the above steps until the error range is met, if the error range is not in the 15 times of circulation, the manual intervention is reported in error. The successfully learned gain value and offset value can be directly recorded in a television production line configuration file and called for adjusting the mode later, and the other two modes are the same as the preset mode.
< third preferred embodiment >
Fig. 3 is a flowchart of a television white balance parameter setting method based on an adjustment mode according to a third preferred embodiment of the present invention. The flow corresponds to the adjustment mode routine of the fourth step S14.
As shown in fig. 3, the television white balance parameter setting method based on the adjustment mode according to the third preferred embodiment of the present invention includes:
first adjustment mode step S31: burning the white balance initial value in the television production line configuration file into the television set in a preset mode;
second adjustment mode step S32: reading the x value, y value and Lv value of the television, calculating the gain value and the offset value which are closer to the white point coordinate in the preset mode relative to the current gain value and the current offset value by using the read x value, y value and Lv value of the television, and burning the calculated gain value and offset value back to the television;
the second adjustment mode step S32 is repeatedly performed and the second adjustment mode step S32 is stopped from being repeatedly performed when the current gain value and current offset value of the television set satisfy a predetermined error range with respect to the gain value and offset value of the white point coordinate in the predetermined mode.
Preferably, the second adjustment mode step S32 is repeatedly performed no more than a second predetermined number of times. For example, the second predetermined number of times is 2 times. It is further preferred that the repeated execution of the second adjustment mode step S32 is stopped when the number of times the second adjustment mode step S32 is repeatedly executed reaches a second predetermined number of times.
Third adjustment mode step S33: and executing a returning operation according to whether the current gain value and the current offset value of the television set relative to the gain value and the offset value of the white point coordinate in the preset mode meet a preset error range.
Specifically, in the third adjustment mode step S33, an adjustment success signal is returned in the event that the current gain value and current offset value of the television set satisfy a predetermined error range with respect to the gain value and offset value of the white point coordinate in the predetermined mode. Also, for example, in the third adjustment mode step S33, if the current gain value and current offset value of the television set do not satisfy the predetermined error range with respect to the gain value and offset value of the white point coordinate in the predetermined mode, an error signal is returned.
In a specific example, for example, the following flow steps may be performed: inserting a signal source into a television, enabling the television to flow into a detection machine, adjusting the television to a preset mode (such as a 'cool mode') by a detection host through a network cable, controlling the signal source by the detection host to enable the television to print a white field, burning a Gain value (a 'Gain value') and an Offset value (an Offset value) in a configuration file into the television through the network cable, reading the x value, the y value and the Lv value of the television by using a color analyzer, if the error range is met, ending, if the error range is not met, calculating the values by using a software algorithm, obtaining the Gain value and the Offset value which are closer to a white point coordinate in the preset mode, burning the Gain value and the Offset value back to the television, controlling the color analyzer to read the x value, the y value and the Lv value once again, if the error range is met, ending, and if the error range is not met, continuing to calculate the Gain value and the Offset value which are closer to the white point coordinate in the preset mode, and the television is burned back again. And controlling the color analyzer to read the x value, the y value and the Lv value of the television once, judging whether the reading is in the adjustment error, ending the reading if the reading is in the range, returning the adjustment failure if the reading is not in the range, and reporting the error for manual intervention. The other two modes are the same as the predetermined mode.
In summary, as described above, in the prior art, on one hand, the time for manually adjusting the white balance of the television is long, and on the other hand, each television manually adjusts the white balance, and each television screen has a certain difference, if the values of the white balance inside the televisions are the same, then the same group of pictures will be played when all the televisions are turned on in the marketplace, and the colors will be different. Aiming at the problem, in order to ensure that the color display of each television is within a smaller range, the invention develops the white balance automatic adjustment method, compared with the existing algorithm, the new algorithm has the advantages of short time and small error, and can ensure that the error value is within a small range even if the production line is frequently changed.
As described above, in the prior art, in a production line, different models may be produced in the same production, and sometimes two models may be changed to three models in a day, and different models and different screens adopted by televisions are different, so that different types of screens have great difference; in order to ensure that each model can be quickly and accurately adjusted to a white point coordinate, the invention designs an automatic learning mode and solves the problem of slow adjusting tempo caused by frequent model change.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A method for setting white balance parameters of a television is characterized by comprising the following steps:
first step S11: a signal source is accessed into a television through a network cable, and is adjusted to be under a corresponding signal source channel of the television, and a factory unique identification code of the television is scanned by a code scanning gun;
second step S12: judging whether the television belongs to a new type or not according to the unique identification code obtained by scanning;
third step S13: entering a learning mode program under the condition that the television is judged to belong to a new type;
fourth step S14: entering an adjustment mode program under the condition that the television is judged not to belong to the new type;
the learning mode procedure includes the steps of:
a first learning mode step: burning the set white balance initial value into a television set as a preset mode;
a second learning mode step: reading the x value, y value and Lv value of the television, calculating the gain value and the offset value which are closer to the white point coordinate in the preset mode relative to the current gain value and the current offset value by using the read x value, y value and Lv value of the television, and burning the calculated gain value and offset value back to the television;
repeatedly executing the second learning mode step, and stopping repeatedly executing the second learning mode step when the current gain value and the current offset value of the television set relative to the gain value and the offset value of the white point coordinate in the preset mode meet a preset error range;
a third learning mode step: recording the current gain value and the current offset value of the television into a television production line configuration file as initial white balance values under the condition that the current gain value and the current offset value of the television relative to the gain value and the offset value of the white point coordinate in the preset mode meet a preset error range;
the tuning mode procedure comprises the steps of:
first adjustment mode step S31: burning the white balance initial value in the television production line configuration file into the television set in a preset mode;
second adjustment mode step S32: reading the x value, y value and Lv value of the television, calculating the gain value and the offset value which are closer to the white point coordinate in the preset mode relative to the current gain value and the current offset value by using the read x value, y value and Lv value of the television, and burning the calculated gain value and offset value back to the television;
the second adjustment mode step S32 is repeatedly executed, and the second adjustment mode step S32 is stopped from being repeatedly executed when the current gain value and the current offset value of the television set satisfy a predetermined error range with respect to the gain value and the offset value of the white point coordinate in the predetermined mode;
third adjustment mode step S33: and executing a returning operation according to whether the current gain value and the current offset value of the television set relative to the gain value and the offset value of the white point coordinate in the preset mode meet a preset error range.
2. The television white balance parameter setting method according to claim 1, wherein the second learning mode step is repeatedly executed no more than a first predetermined number of times.
3. The television white balance parameter setting method according to claim 2, wherein the first predetermined number of times is 15 times.
4. The television white balance parameter setting method according to claim 2, wherein the repeated execution of the second learning mode step is stopped when the number of times of the repeated execution of the second learning mode step reaches a second predetermined number of times.
5. The method for setting white balance parameters of a television set according to claim 1, wherein the second adjustment mode step is repeatedly performed no more than a predetermined number of times.
6. The television white balance parameter setting method according to claim 5, wherein the predetermined number of times is 2 times.
7. The television white balance parameter setting method according to claim 6, characterized in that: when the number of times of repeatedly performing the second adjustment mode step S32 reaches the predetermined number of times, the repeated performance of the second adjustment mode step S32 is stopped.
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| CN201710866234.8A CN107454393B (en) | 2017-09-22 | 2017-09-22 | Method for setting white balance parameters of television |
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| CN115002436A (en) * | 2021-03-02 | 2022-09-02 | 广州视源电子科技股份有限公司 | White balance adjusting method, system, device and storage medium |
| CN114710654B (en) * | 2022-04-24 | 2024-01-23 | 安谋科技（中国）有限公司 | Image processing method, device, readable storage medium and electronic equipment |
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| CN104113751A (en) * | 2013-04-16 | 2014-10-22 | 纬创资通股份有限公司 | display parameter adjusting method and system |
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