CN108933940B - Television set brightness and contrast automatic debugging system and method - Google Patents
Television set brightness and contrast automatic debugging system and method Download PDFInfo
- Publication number
- CN108933940B CN108933940B CN201810843259.0A CN201810843259A CN108933940B CN 108933940 B CN108933940 B CN 108933940B CN 201810843259 A CN201810843259 A CN 201810843259A CN 108933940 B CN108933940 B CN 108933940B
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- brightness
- television set
- debugging
- contrast
- luminance meter
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4854—End-user interface for client configuration for modifying image parameters, e.g. image brightness, contrast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/57—Control of contrast or brightness
Abstract
The present invention relates to display control technology fields.The present invention seeks unity of standard to solve the problems, such as that existing television image brightness and contrast debugging lack, it is proposed a kind of television set brightness and contrast automatic debugging system and method, homemade debugging signal is imported in signal generator, debugging signal is switched over by control module, control module completes the Read-write Catrol of television set brightness and the corresponding register parameters of contrast according to the brightness value that luminance meter acquires, complete television set brightness and the debugging of contrast, it realizes and television set brightness and contrast debugging is quantified, improve complete machine image quality, furthermore, brightness and contrast are debugged automatically by control module, improve debugging efficiency, it is debugged suitable for television set brightness and the factory of contrast.
Description
Technical field
The present invention relates to display control technology fields, more particularly to a kind of television image brightness and the debugging of contrast
System and method.
Background technique
Digital television is required to carry out brightness, contrast debugging in product development stage, that is, determines custom menu
Middle brightness, contrast correspond to the parameter value of register when being respectively maximum, standard, minimum three kinds of states, and parameter value is written
In register, and it is most of at present be all made of naked eyes to observe the brightness and contrast of picture, debug the mode of register manually
The brightness and contrast of TV set image are debugged, due to the subjective factor of commissioning staff, different commissioning staffs is to bright
The judgement of degree and contrast is different, and leading to multiple television sets, there are larger differences in brightness and contrast, lack unified mark
Standard, and efficiency is lower by the way of debugging manually.
Summary of the invention
The invention aims to solve the problems, such as that existing television image brightness and contrast debugging lack unified standard, mention
A kind of television set brightness and contrast automatic debugging system and method out.
The technical proposal adopted by the invention to solve the above technical problems is that: television set brightness and contrast debug automatically and are
System is applied to television set, comprising: signal generator, luminance meter and control module, the control module occur with signal respectively
Device, luminance meter are connected with television set, and the signal generator is connect with television set, and the luminance meter is set to television display screen
On；
The signal generator, for sending debugging signal to television set；
The luminance meter, for detecting television set actual displayed screen brightness and brightness value being sent to control module；
The control module receives the brightness value that luminance meter is sent for control signal generator switching debugging signal, and
According to the brightness value, television set brightness and the corresponding register parameters of contrast are set.
Further, luminance meter is fixed when debugging for convenience, and self-control debugging signal, the debugging signal includes dark
Debugging signal and 16 grayscale signals, dark field debugging 1.5 component level of signal in television set center, 0.4 rank and 0.8 component level in
1.5 rank two sides, 16 grayscale signal, 16 component level are sequentially reduced in television set center from television set center to two sides brightness.
Further, the luminance meter is set to television display screen center, is easy to implement brightness and contrast is adjusted automatically
Examination.
Television set brightness and the automatic adjustment method of contrast, applied to above-mentioned television set brightness automatic debugging system, packet
Include following steps:
S1. debugging television GAMMA curve；
S2. television set maximum brightness, minimum brightness are tested；
S3. brightness value in custom menu and contrast value are disposed as standard
S4. corresponding when brightness value, contrast value are respectively minimum, standard, maximum in Initialize installation custom menu to post
Storage parameter:
BRI0=0, BRI50=80H, BRI100=FFH,
CON0=0, CON50=80H, CON100=FFH；
In formula, BRI0, BRI50, it is minimum that BRI100, which respectively corresponds brightness value in custom menu, and standard is corresponding when maximum
Register parameters, CON0, CON50, CON100 respectively corresponds in custom menu contrast value as minimum, standard, when maximum pair
The register parameters answered；
S5. control signal generator output dark field debugs signal, and the brightness value satisfaction that debugging BRI50 reads luminance meter is sentenced
Then broken strip part one keeps in BRI50 to function DB；
S6. control signal generator exports 16 grayscale signals, and the brightness value that debugging BRI50 reads luminance meter meets judgement
Then condition two deposits BRI50 to BRI100, function DB is deposited to BRI50；
S7. the brightness value that debugging CON50 reads luminance meter meets Rule of judgment two, then deposits CON50 to CON100,
And CON50 is calculated according to CON100 and is kept in function DC；
S8. the brightness value that debugging BRI50 reads luminance meter meets Rule of judgment three, then deposits BRI50 to BRI0；
S9. the brightness value that debugging CON50 reads luminance meter meets Rule of judgment four, then deposits CON50 to CON0, will
Function DB is deposited to BRI50, and function DC is deposited to CON50.
To improve adjustment accuracy, above-mentioned Rule of judgment is described further；
Specifically, the brightness value that the luminance meter is read meets Rule of judgment one in step S5 are as follows:
MIN≤L≤MIN+0.01；
In formula, MIN is television set minimum brightness, and L is the television set intrinsic brilliance value that luminance meter is read；
Indicate that brightness value is standard in custom menu, dark field is debugged in signal, and 1.5 ranks are just visible.
Specifically, the brightness value that the luminance meter is read meets Rule of judgment two in step S6 and S7 are as follows:
MAX-△T≤L≤MAX+△T；
In formula, MAX is television set maximum brightness, and △ T is the error amount of luminance meter；
It indicates in 16 grayscale signals, 15 ranks are equal with 16 rank brightness, maximum brightness 15 and 16 ranks just clipping.
Specifically, in step S7, the calculation formula of the CON50 are as follows:
CON50=CON100 × 90%.
Specifically, the brightness value that the luminance meter is read meets Rule of judgment three in step S8 are as follows:
MAX×0.5-△T≤L≤MAX×0.5+△T；
When indicating that brightness value is minimum in custom menu, picture maximum brightness is when brightness value is standard in custom menu
The half of picture brightness.
Specifically, the brightness value that the luminance meter is read meets Rule of judgment four in step S9 are as follows:
MIN-△T≤L≤MIN+△T；
At this point, TV set image is completely black not to shine when brightness value in custom menu and contrast value are minimum.
Specifically, to further increase adjustment accuracy, the error information △ T of the luminance meter is 3nits.
The beneficial effects of the present invention are: television set brightness of the present invention and contrast automatic debugging system and method,
Special debugging signal is imported in signal generator, debugging signal is switched over by control module, control module is to television set
The Read-write Catrol of brightness and the corresponding register parameters of contrast, change display screen custom menu in contrast value will lead to it is aobvious
Display screen intrinsic brilliance changes, therefore the brightness value that can be acquired according to luminance meter carries out the tune of television set brightness and contrast
Examination is realized and is quantified to television set brightness and contrast debugging, complete machine image quality improved, in addition, applying corresponding computer
After program, debugging system automatically debugs brightness and contrast, improves debugging efficiency.
Detailed description of the invention
Fig. 1 is television set brightness and contrast automatic debugging system structural schematic diagram described in the embodiment of the present invention；
Fig. 2 is television set brightness and the automatic adjustment method flow diagram of contrast described in the embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are described in detail below in conjunction with attached drawing.
Television set brightness of the present invention and contrast automatic debugging system are applied to television set, comprising: signal occurs
Device, luminance meter and control module, control module are connect with signal generator, luminance meter and television set respectively, signal generator with
Television set connection, luminance meter are set on television display screen；Control module control signal generator switching debugging signal, changes
The value of contrast will lead to display screen intrinsic brilliance and change in display screen custom menu, therefore according to the bright of luminance meter acquisition
Degree evidence debugs television set brightness and the corresponding register parameters of contrast automatically.
Its adjustment method is the following steps are included: S1. debugging television GAMMA curve；S2. television set maximum brightness is tested,
Minimum brightness；S3. brightness value in custom menu and contrast value are disposed as standard；S4. in Initialize installation custom menu
Brightness value, contrast value corresponding register parameters when being respectively minimum, standard, maximum:
BRI0=0, BRI50=80H, BRI100=FFH,
CON0=0, CON50=80H, CON100=FFH；
In formula, BRI0, BRI50, it is minimum that BRI100, which respectively corresponds brightness value in custom menu, and standard is corresponding when maximum
Register parameters, CON0, CON50, CON100 respectively corresponds in custom menu contrast value as minimum, standard, when maximum pair
The register parameters answered；S5. control signal generator output dark field debugs signal, the brightness that debugging BRI50 reads luminance meter
Value meets Rule of judgment one, then keeps in BRI50 to function DB；S6. control signal generator exports 16 grayscale signals, debugging
BRI50 make luminance meter read brightness value meet Rule of judgment two, then BRI50 is deposited to BRI100, by function DB deposit to
BRI50；S7. the brightness value that debugging CON50 reads luminance meter meets Rule of judgment two, then deposits CON50 to CON100, and
CON50 is calculated according to CON100 and is kept in function DC；S8. the brightness value that debugging BRI50 reads luminance meter meets
Then Rule of judgment three is deposited BRI50 to BRI0；S9. the brightness value that debugging CON50 reads luminance meter meets Rule of judgment
Four, then CON50 is deposited to CON0, function DB is deposited to BRI50, function DC is deposited to CON50.
Embodiment
As shown in Figure 1, the television set brightness of the embodiment of the present invention and contrast automatic debugging system include: signal
Device, luminance meter and control module, control module are connect with signal generator, luminance meter and television set respectively, signal generator with
Television set connection, luminance meter are set on television display screen；Control module reads the brightness data of luminance meter, signal hair automatically
The special debugging signal that raw device output imports, and receive the control switching debugging signal of control module, control module are also used to pair
Television set is written and read Communication Control, and television set brightness is arranged according to the brightness data of reading and the corresponding register of contrast is joined
CA310 can be selected in number, luminance meter, and VG876 can be selected in signal generator, different according to the actual situation, does not make herein any
It limits.
Above-mentioned debugging signal includes dark field debugging signal and 16 grayscale signals, and luminance meter is fixed not when debugging for convenience
Dynamic, in the debugging signal of production, dark field debugging signal, which is input to television set, makes its 1.5 component level in television set center, 0.4 rank and
0.8 component level is sequentially reduced in television set center from television set center to two sides brightness in two sides, 16 grayscale signal, 16 component level, this
The television set brightness of inventive embodiments and contrast automatic debugging system, by taking television display screen pixel is 3840*2160 as an example,
Its debugging signal made includes No. 1 debugging signal and No. 2 debugging signals, i.e. dark field debugs signal and 16 grayscale signals, as follows
Shown in table:
Luminance meter is set to television screen center, is at dark field debugging 1.5 rank of signal and 16 grayscale signal, 15 rank
Intersection.
As shown in Fig. 2, the television set brightness of the embodiment of the present invention and the automatic adjustment method of contrast the following steps are included:
S1. debugging television GAMMA curve；
S2. television set maximum brightness, minimum brightness are tested；
S3. brightness value in custom menu and contrast value are disposed as standard；
S4. corresponding when brightness value, contrast value are respectively minimum, standard, maximum in Initialize installation custom menu to post
Storage parameter:
BRI0=0, BRI50=80H, BRI100=FFH,
CON0=0, CON50=80H, CON100=FFH；
In formula, BRI0, BRI50, it is minimum that BRI100, which respectively corresponds brightness value in custom menu, and standard is corresponding when maximum
Register parameters, CON0, CON50, CON100 respectively corresponds in custom menu contrast value as minimum, standard, when maximum pair
The register parameters answered；Custom menu is as shown in the table:
| It is minimum | Standard | It is maximum | |
| Brightness/contrast | 0 | 50 | 100 |
| The corresponding register parameters of brightness | BRI0 | BRI50 | BRI100 |
| The corresponding register parameters of contrast | CON0 | CON50 | CON100 |
S5. control signal generator output dark field debugs signal, and the brightness value satisfaction that debugging BRI50 reads luminance meter is sentenced
Broken strip part: then MIN≤L≤MIN+0.01 keeps in BRI50 to function DB；
In formula, MIN is television set minimum brightness, and L is the television set intrinsic brilliance value that luminance meter is read；
Brightness value is standard in custom menu at this time, and dark field is debugged in signal, and 1.5 ranks are just visible；
If L > MIN, BRI50-1 is deposited to BRI50, if L < MIN, BRI50+1 is deposited to BRI50, then is sentenced again
Whether the brightness data L that disconnected luminance meter is read meets condition, so recycles, until L meets condition, completion BRI50 debugging；
S6. control signal generator exports 16 grayscale signals, and the brightness value that debugging BRI50 reads luminance meter meets judgement
Condition: then BRI50 is deposited to BRI100, function DB is deposited to BRI50 by MAX- △ T≤L≤MAX+ △ T；
In formula, MAX is television set maximum brightness, and △ T is the error amount of luminance meter；
It is indicated in 16 grayscale signals at this time, 15 ranks are equal with 16 rank brightness, maximum brightness 15 and 16 ranks just clipping；
If L is unsatisfactory for condition, BRI50+1 is deposited to BRI50, then rejudge the brightness data L that luminance meter is read to be
It is no to meet condition, it so recycles, until L meets condition, completion BRI100 debugging；
S7. the brightness value that debugging CON50 reads luminance meter meets Rule of judgment: MAX- △ T≤L≤MAX+ △ T, at this time
It indicates in 16 grayscale signals, 15 ranks are equal with 16 rank brightness, then maximum brightness 15 and 16 ranks just clipping are deposited CON50
To CON100, and CON50 is calculated according to CON100 and is kept in function DC, calculation formula is as follows:
CON50=CON100 × 90%；
If L is unsatisfactory for condition, CON50+1 is deposited to CON50, then rejudge the brightness data L that luminance meter is read to be
It is no to meet condition, it so recycles, until L meets condition, completion CON100, CON50 debugging；
S8. the brightness value that debugging BRI50 reads luminance meter meets Rule of judgment: MAX × 0.5- △ T≤L≤MAX ×
0.5+ △ T, then deposits BRI50 to BRI0；
When indicating that brightness value is minimum in custom menu, picture maximum brightness is when brightness value is standard in custom menu
The half of picture brightness；
If L is unsatisfactory for condition, BRI50-1 is deposited to BRI50, then rejudge the brightness data L that luminance meter is read to be
It is no to meet condition, it so recycles, until L meets condition, completion BRI0 debugging；
S9. the brightness value that debugging CON50 reads luminance meter meets Rule of judgment: MIN- △ T≤L≤MIN+ △ T, this
When, when brightness value in custom menu and contrast value are minimum, TV set image is completely black not to shine, and then deposits CON50
To CON0, function DB is deposited to BRI50, function DC is deposited to CON50；
If L is unsatisfactory for condition, CON50-1 is deposited to CON50, then rejudge the brightness data L that luminance meter is read to be
It is no to meet condition, it so recycles, until L meets condition, completion CON0 debugs
Different according to the luminance meter model of selection, error information is also different, and the present embodiment selects luminance meter model
CA310, error information △ T are 3nits, more accurately.
Control module switching signal generator output debugging signal, and to television set brightness and the corresponding register of contrast
Parameter is written and read control, after the brightness that control module is read automatically, which counts, to be met certain condition, joins to above-mentioned register
Number is modified and is saved, and the debugging of television set brightness and comparison is completed.
Claims (10)
1. television set brightness and contrast automatic debugging system are applied to television set characterized by comprising signal generator,
Luminance meter and control module, the control module are connect with signal generator, luminance meter and television set respectively, and the signal occurs
Device is connect with television set, and the luminance meter is set on television display screen；
The signal generator, for sending debugging signal to television set；
The luminance meter, for detecting television set actual displayed screen brightness and brightness value being sent to control module；
The control module, for control signal generator switching debugging signal, the brightness value that reception luminance meter is sent, and according to
The brightness value setting television set brightness and the corresponding register parameters of contrast, specifically: it is bent in debugging television GAMMA
Line tests television set maximum brightness and minimum brightness and brightness value in custom menu and contrast value is disposed as standard
Afterwards:
Corresponding register ginseng when brightness value, contrast value are respectively minimum, standard, maximum in Initialize installation custom menu
Number:
BRI0=0, BRI50=80H, BRI100=FFH,
CON0=0, CON50=80H, CON100=FFH；
In formula, BRI0, BRI50, it is minimum that BRI100, which respectively corresponds brightness value in custom menu, and standard is corresponding when maximum to post
Storage parameter, CON0, CON50, it is minimum that CON100, which respectively corresponds contrast value in custom menu, and standard is corresponding when maximum
Register parameters；
Control signal generator exports dark field and debugs signal, and the brightness value that debugging BRI50 reads luminance meter meets Rule of judgment
After one, BRI50 is kept in function DB；
Control signal generator exports 16 grayscale signals, and the brightness value that debugging BRI50 reads luminance meter meets Rule of judgment two
Afterwards, BRI50 is deposited to BRI100, function DB is deposited to BRI50；
After the brightness value that debugging CON50 reads luminance meter meets Rule of judgment two, CON50 is deposited to CON100, and according to
CON100 calculates CON50 and is kept in function DC；
After the brightness value that debugging BRI50 reads luminance meter meets Rule of judgment three, BRI50 is deposited to BRI0；
After the brightness value that debugging CON50 reads luminance meter meets Rule of judgment four, CON50 is deposited to CON0, function DB is deposited
To BRI50, function DC is deposited to CON50.
2. television set brightness as described in claim 1 and contrast automatic debugging system, which is characterized in that the debugging signal
Signal and 16 grayscale signals are debugged including dark field, dark field debugging 1.5 component level of signal is in television set center, 0.4 rank and 0.8 rank
Positioned at 1.5 rank two sides, 16 grayscale signal, 16 component level successively subtracts in television set center from television set center to two sides brightness
It is small.
3. television set brightness as described in claim 1 and contrast automatic debugging system, which is characterized in that the luminance meter is set
It is placed in television display screen center.
4. television set brightness and the automatic adjustment method of contrast, which is characterized in that be applied to such as any one of claims 1 to 3 institute
The television set brightness automatic debugging system stated, comprising the following steps:
S1. debugging television GAMMA curve；
S2. television set maximum brightness, minimum brightness are tested；
S3. brightness value in custom menu and contrast value are disposed as standard；
S4. corresponding register when brightness value, contrast value are respectively minimum, standard, maximum in Initialize installation custom menu
Parameter:
BRI0=0, BRI50=80H, BRI100=FFH,
CON0=0, CON50=80H, CON100=FFH；
In formula, BRI0, BRI50, it is minimum that BRI100, which respectively corresponds brightness value in custom menu, and standard is corresponding when maximum to post
Storage parameter, CON0, CON50, it is minimum that CON100, which respectively corresponds contrast value in custom menu, and standard is corresponding when maximum
Register parameters；
S5. control signal generator output dark field debugs signal, and the brightness value satisfaction that debugging BRI50 reads luminance meter judges item
Then part one keeps in BRI50 to function DB；
S6. control signal generator exports 16 grayscale signals, and the brightness value that debugging BRI50 reads luminance meter meets Rule of judgment
Two, then BRI50 is deposited to BRI100, function DB is deposited to BRI50；
S7. the brightness value that debugging CON50 reads luminance meter meets Rule of judgment two, then deposits CON50 to CON100, and root
CON50 is calculated according to CON100 and is kept in function DC；
S8. the brightness value that debugging BRI50 reads luminance meter meets Rule of judgment three, then deposits BRI50 to BRI0；
S9. the brightness value that debugging CON50 reads luminance meter meets Rule of judgment four, then deposits CON50 to CON0, by function
DB is deposited to BRI50, and function DC is deposited to CON50.
5. television set brightness as claimed in claim 4 and the automatic adjustment method of contrast, which is characterized in that in step S5, institute
The brightness value for stating luminance meter reading meets Rule of judgment one are as follows:
MIN≤L≤MIN+0.01；
In formula, MIN is television set minimum brightness, and L is the television set intrinsic brilliance value that luminance meter is read；
Indicate that brightness value is standard in custom menu, dark field is debugged in signal, and 1.5 ranks are just visible.
6. television set brightness as claimed in claim 4 and the automatic adjustment method of contrast, which is characterized in that step S6 and S7
In, the brightness value that the luminance meter is read meets Rule of judgment two are as follows:
MAX-△T≤L≤MAX+△T；
In formula, MAX is television set maximum brightness, and △ T is the error amount of luminance meter；
It indicates in 16 grayscale signals, 15 ranks are equal with 16 rank brightness, maximum brightness 15 and 16 ranks just clipping.
7. television set brightness as claimed in claim 4 and the automatic adjustment method of contrast, which is characterized in that in step S7, institute
State the calculation formula of CON50 are as follows:
CON50=CON100 × 90%.
8. television set brightness as claimed in claim 4 and the automatic adjustment method of contrast, which is characterized in that in step S8, institute
The brightness value for stating luminance meter reading meets Rule of judgment three are as follows:
MAX×0.5-△T≤L≤MAX×0.5+△T；
When indicating that brightness value is minimum in custom menu, picture maximum brightness is picture when brightness value is standard in custom menu
The half of brightness.
9. television set brightness as claimed in claim 4 and the automatic adjustment method of contrast, which is characterized in that in step S9, institute
The brightness value for stating luminance meter reading meets Rule of judgment four are as follows:
MIN-△T≤L≤MIN+△T；
At this point, TV set image is completely black not to shine when brightness value in custom menu and contrast value are minimum.
10. such as the described in any item television set brightness of claim 4 to 9 and the automatic adjustment method of contrast, which is characterized in that institute
The error information △ T for stating luminance meter is 3nits.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101695112A (en) * | 2009-10-28 | 2010-04-14 | 四川长虹电器股份有限公司 | Method for regulating luminance and contrast ratio of digital televisions |
| CN106791820A (en) * | 2016-12-28 | 2017-05-31 | 北京泰瑞特检测技术服务有限责任公司 | A kind of gray scale adjusting means of television set limit eight and method |
| CN108322739A (en) * | 2018-02-06 | 2018-07-24 | 四川长虹电器股份有限公司 | A kind of LCD TV gamma adjustment method of reduce brightness loss |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040063379A (en) * | 2003-01-07 | 2004-07-14 | 삼성전자주식회사 | Picture adjustment method using video pattern and DVD player providing video pattern |
| JP2015087413A (en) * | 2013-10-28 | 2015-05-07 | 株式会社東芝 | Electronic apparatus, and display image correction method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101695112A (en) * | 2009-10-28 | 2010-04-14 | 四川长虹电器股份有限公司 | Method for regulating luminance and contrast ratio of digital televisions |
| CN106791820A (en) * | 2016-12-28 | 2017-05-31 | 北京泰瑞特检测技术服务有限责任公司 | A kind of gray scale adjusting means of television set limit eight and method |
| CN108322739A (en) * | 2018-02-06 | 2018-07-24 | 四川长虹电器股份有限公司 | A kind of LCD TV gamma adjustment method of reduce brightness loss |
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