CN100418133C - Self-adaptive control unit and method for display quality of TV - Google Patents
Self-adaptive control unit and method for display quality of TV Download PDFInfo
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- CN100418133C CN100418133C CNB2006100601583A CN200610060158A CN100418133C CN 100418133 C CN100418133 C CN 100418133C CN B2006100601583 A CNB2006100601583 A CN B2006100601583A CN 200610060158 A CN200610060158 A CN 200610060158A CN 100418133 C CN100418133 C CN 100418133C
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Abstract
The present invention discloses a self-adaptive adjusting unit and a method for the display quality of TVs with an LCD. The self-adaptive adjusting unit comprises an LCD display module. The self-adaptive adjusting unit is characterized in that the self-adaptive adjusting unit is also provided with an information collector which can collect correlation parameters and a CPU which can analyze and process the collected information; information collector signals are connected with the CPU; the CPU is used for controlling and connecting a backlight source brightness adjusting port of the LCD display module. As the present invention uses a self controlling method to realize self-adaptive adjustment, backlight source brightness can be well controlled, and the problems because the backlight source brightness is too high or too low can be eliminated. Thus, subjective picture quality can be improved, and energy can be saved.
Description
Technical field
The present invention relates to the television display technology field, more specifically say the regulation technology that relates to the LCD TV display quality.
Background technology
The LCD TV is being subjected to consumer's favor now, progressively enters among the ordinary consumer man.But, because LCD is the passive-type display device, come displayed image by liquid crystal as controlled light valve, because the restriction of liquid crystal characteristic, light valve does not reach desirable closed condition, promptly gives complete black signal yet, and the LCD screen also is to have faint light to send, under the lower situation of ambient brightness, the bad phenomenon of black level performance is obvious especially.For specific LCD display module, have only the back light source brightness of reduction could improve the black level performance.Therefore, the LCD TV has the following disadvantages now: 1, under normal family environment for use, particularly under the situation that evening or ambient brightness are lower, brightness is too high, and eyes are tired easily; Part dark in the image can not deceive, and the black level performance is bad, causes visual stereovision not strong, and image quality is undesirable.2, the consumed power substantially constant of LCD display, the power consumption of backlight is not regulated according to different situations, generally all is set to peak power, not only do not meet energy-conservation theory, and too bright meeting backlight causes the problem of display quality.The LCD TV that has adopts the rearrangeable switch that the control backlight illumination is set to adjust back light source brightness, and still, this method of adjustment needs not very convenient by manual adjustment, seldom has the consumer to use this adjustment function.
Summary of the invention
One of technical matters to be solved by this invention provides a kind of regulating device that can regulate the LCD TV display quality automatically.
The present invention includes one and can collect the information collector that helps the correlation parameter of back light source brightness adjustment, an energy carries out the CPU of analyzing and processing to the information of collecting, the information collector signal connects CPU, the back light source brightness of CPU control linkage LCD display module is adjusted port, it is characterized in that, described information collector comprise one can be to the extraction module of the image content feature extraction information of picture intelligence.
Described information collector also comprise one can the testing environment luminance brightness optical sensor.
Two of technical matters to be solved by this invention provides a kind of method that can regulate the LCD TV display quality automatically.
Described method may further comprise the steps:
A, collection help the image content characteristic parameter to the back light source brightness adjustment;
B, the parameter of collecting is sent to the CPU that presets analysis and processing program;
The back light source brightness of LCD display module is adjusted in C, CPU output control information.
Also comprise the parameter of collecting environmental light brightness in the described steps A, send into the parameter that parameter among the CPU had not only comprised the image content characteristic parameter but also comprised environmental light brightness described in the step B.
Analysis and processing program described in the step B comprises following image information analyzing and processing step:
After the start, extract histogram information, mean value, maximin, the deviate of every frame image;
Estimate the dark space ratio Pdk under the present status then;
Then with Pdk with compare with the dark space ratio Cdk that presets, regulate if Pdk, does not carry out backlight less than Cdk, carry out common image quality enhancement process; Reduce parameter Δ R if Pdk greater than Cdk, calculates and be provided with backlight, calculate and be provided with delay parameter Td.
Analysis and processing program described in the step B also comprises following monochrome information analytical procedure:
Start back per minute circulation primary obtains the environment bright degrees of data;
Then the luminance brightness data are analyzed, be higher than 200LUX, back light source brightness adjusts to 100%; Be higher than 100LUX less than 200LUX, back light source brightness adjusts to 95%; Be higher than 50LUX less than 100LUX, back light source brightness adjusts to 90%; Be higher than 10LUX less than 50LUX, back light source brightness adjusts to 80%; Less than 10LUX, back light source brightness adjusts to 70%.
The back light source brightness adjustment is at interval with 200-300MS among the described step C, from high to low or from low to high, all adopts the mode of approaching gradually to adjust.
The each adjustment at interval needs 1%, 2% or 4% of adjusted value.
The present invention can realize the control of back light source brightness preferably owing to adopt the way of control automatically to realize the self-adaptation adjustment, can eliminate the too high or too low problem of bringing of back light source brightness.Therefore, not only subjective image quality can be improved, and, can reach purpose of energy saving.
Description of drawings
Fig. 1 is the regulating device composition frame chart of the embodiment of the invention 1.
Fig. 2 is the regulating device composition frame chart of the embodiment of the invention 2.
Fig. 3 is the CPU analyzing and processing process flow diagram of the embodiment of the invention 1.
Fig. 4 is the CPU analyzing and processing process flow diagram of the embodiment of the invention 2.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment
Embodiment 1
In the present embodiment, regulating device comprises the LCD display module, photoresistance or other sensor devices and accessory circuit, CPU.Photoresistance or other sensor devices and accessory circuit are used for the detection for environmental light brightness, and photoresistance or other sensor devices and accessory circuit are sent to the parameter of collecting the CPU that presets analysis and processing program; CPU obtains the information of environmental light brightness, and then, according to the controlled quentity controlled variable of optimized Algorithm output back light source brightness, different LCD display modules adopts different controlled quentity controlled variables, can be voltage or pwm pulse.
The analysis and processing program flow process according to the controlled quentity controlled variable of optimized Algorithm output back light source brightness that presets among the CPU is as follows:
Start back per minute circulation primary obtains the environment bright degrees of data, then the luminance brightness data is analyzed, and is higher than 200LUX, and back light source brightness adjusts to 100%; Be higher than 100LUX less than 200LUX, back light source brightness adjusts to 95%; Be higher than 50LUX less than 100LUX, back light source brightness adjusts to 90%; Be higher than 10LUX less than 50LUX, back light source brightness adjusts to 80%; Less than 10LUX, back light source brightness adjusts to 70%.For avoiding occurring flicker, in case determine and need regulate, will be at interval with 200-300MS, adjust 1%, 2% or 4% at every turn, from high to low or from low to high, all adopt the mode of approaching gradually to adjust.
Embodiment 2
Present embodiment comprises the LCD display module, extraction module, CPU.Extraction module can be to the image content feature extraction information of picture intelligence.Extraction module utilizes the image content feature extraction unit of image enhancement inside modules to extract information such as the histogram of image content and mean value, and just correlation parameter is sent to the CPU that presets analysis and processing program then; Then, according to the controlled quentity controlled variable of optimized Algorithm output back light source brightness, different LCD display modules adopts different controlled quentity controlled variables, can be voltage or pwm pulse.
The analysis and processing program flow process according to the controlled quentity controlled variable of optimized Algorithm output back light source brightness that presets among the CPU is as follows:
After the start, extract histogram information, mean value, maximin, the deviate of every frame image.Estimate the dark space ratio Pdk under the present status then.And with Pdk with compare with the dark space ratio Cdk that presets, regulate if Pdk, does not carry out backlight less than Cdk, carry out common image quality enhancement process; If Pdk is greater than Cdk, calculate and be provided with backlight and reduce parameter Δ R, calculate and be provided with delay parameter Td, carry out the adjustment control of adaptive backlight source according to Δ R and Td again, carry out luminance compensation and white level and extend the image quality reduction that causes with compensate for backlight brightness decline.
Claims (8)
1. the self-adaptive regulating of LCD TV display quality, comprise that can be collected an information collector that helps the correlation parameter of back light source brightness adjustment, an energy carries out the CPU of analyzing and processing to the information of collecting, the information collector signal connects CPU, the back light source brightness of CPU control linkage LCD display module is adjusted port, it is characterized in that, described information collector comprise one can be to the extraction module of the image content feature extraction information of picture intelligence.
2. according to right 1 described self-adaptive regulating, it is characterized in that: described information collector also comprise one can the testing environment luminance brightness optical sensor.
3. the adaptive regulation method of LCD TV display quality may further comprise the steps:
A, collection help the image content characteristic parameter to the back light source brightness adjustment;
B, the parameter of collecting is sent to the CPU that presets analysis and processing program;
The back light source brightness of LCD display module is adjusted in C, CPU output control information.
4. according to right 3 described adaptive regulation methods, it is characterized in that: also comprise the parameter of collecting environmental light brightness in the described steps A, send into the parameter that parameter among the CPU had not only comprised the image content characteristic parameter but also comprised environmental light brightness described in the step B.
5. according to right 4 described adaptive regulation methods, it is characterized in that: the analysis and processing program described in the step B comprises following image information analyzing and processing step:
After the start, extract histogram information, mean value, maximin, the deviate of every frame image;
Estimate the dark space ratio Pdk under the present status then;
Then with Pdk with compare with the dark space ratio Cdk that presets, regulate if Pdk, does not carry out backlight less than Cdk, carry out common image quality enhancement process; Reduce parameter Δ R if Pdk greater than Cdk, calculates and be provided with backlight, calculate and be provided with delay parameter Td.
6. according to right 5 described adaptive regulation methods, it is characterized in that: the analysis and processing program described in the step B also comprises following monochrome information analytical procedure:
Start back per minute circulation primary obtains the environment bright degrees of data;
Then the luminance brightness data are analyzed, be higher than 200LUX, back light source brightness adjusts to 100%; Be higher than 100LUX less than 200LUX, back light source brightness adjusts to 95%; Be higher than 50LUX less than 100LUX, back light source brightness adjusts to 90%; Be higher than 10LUX less than 50LUX, back light source brightness adjusts to 80%; Less than 10LUX, back light source brightness adjusts to 70%.
7. according to right 6 described adaptive regulation methods, it is characterized in that: the back light source brightness adjustment is at interval with 200-300MS among the described step C, from high to low or from low to high, all adopts the mode of approaching gradually to adjust.
8. according to right 7 described adaptive regulation methods, it is characterized in that: the each adjustment at interval needs 1%, 2% or 4% of adjusted value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100601583A CN100418133C (en) | 2006-03-31 | 2006-03-31 | Self-adaptive control unit and method for display quality of TV |
| HK07105974.2A HK1098568B (en) | 2007-06-06 | An adaptive adjusting device for lcd tv display quality and its method |
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| CNB2006100601583A CN100418133C (en) | 2006-03-31 | 2006-03-31 | Self-adaptive control unit and method for display quality of TV |
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| CN1873758A CN1873758A (en) | 2006-12-06 |
| CN100418133C true CN100418133C (en) | 2008-09-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102148020B (en) * | 2010-02-10 | 2013-11-06 | 元太科技工业股份有限公司 | Light-to-dark conversion display device, display and brightness adjustment method thereof |
| CN102339590A (en) * | 2010-07-27 | 2012-02-01 | 英华达（上海）科技有限公司 | Power-saving device and method for electronic system |
| CN106297724A (en) * | 2015-06-23 | 2017-01-04 | 展讯通信（上海）有限公司 | Mobile terminal and control method thereof |
| CN106023885B (en) * | 2016-08-12 | 2019-10-29 | 深圳市灵星雨科技开发有限公司 | A kind of LED display automatic brightness adjustment method |
| WO2019028788A1 (en) * | 2017-08-10 | 2019-02-14 | 深圳益创信息科技有限公司 | Smart playback method and smart television |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393728A (en) * | 2001-06-22 | 2003-01-29 | 神达电脑股份有限公司 | Light Sensor Calibration Method for Automatic Brightness Control of Liquid Crystal Display |
| CN1519623A (en) * | 2003-01-20 | 2004-08-11 | 英保达股份有限公司 | Device and method for adjusting backlight brightness of display |
| CN1650220A (en) * | 2002-04-26 | 2005-08-03 | 韩国电子通信研究院 | Apparatus and method for reducing power consumption by adjusting backlight and adjusting visual signals |
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- 2006-03-31 CN CNB2006100601583A patent/CN100418133C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393728A (en) * | 2001-06-22 | 2003-01-29 | 神达电脑股份有限公司 | Light Sensor Calibration Method for Automatic Brightness Control of Liquid Crystal Display |
| CN1650220A (en) * | 2002-04-26 | 2005-08-03 | 韩国电子通信研究院 | Apparatus and method for reducing power consumption by adjusting backlight and adjusting visual signals |
| CN1519623A (en) * | 2003-01-20 | 2004-08-11 | 英保达股份有限公司 | Device and method for adjusting backlight brightness of display |
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| HK1098568A1 (en) | 2007-07-20 |
| CN1873758A (en) | 2006-12-06 |
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Owner name: LCD SKYWORTH (SHENZHEN) CO., LTD. Free format text: FORMER OWNER: SHENZHEN SKYWORTH-RGB ELECTRONIC CO., LTD. Effective date: 20090327 |
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Effective date of registration: 20090327 Address after: First floor, SKYWORTH science and technology industrial complex, Tong Tau Industrial Zone, Shiyan street, Shiyan City, Guangdong, Shenzhen, Baoan District Patentee after: Skyworth LCD Device (Shenzhen) Co., Ltd. Address before: Guangdong city of Shenzhen province Nanshan District Gao Xin Road SKYWORTH building A13-16 Patentee before: Chuangwei-RGB Electronic Co., Ltd., Shenzhen City |
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Effective date of registration: 20160205 Address after: 518057 Guangdong city of Shenzhen province Nanshan District Gao Xin Road SKYWORTH building A block 13-16 Patentee after: Shenzhen Skyworth-RGB Electronics Co., Ltd. Address before: 518000, Shenzhen, Guangdong province Baoan District Shiyan street, Tong Tau Industrial Zone, SKYWORTH science and Technology Industrial Park, the first floor of the building Patentee before: Skyworth LCD Modules (Shenzhen) Co., Ltd. |