CN102377956B - Dynamic backlight regulation method of LCD (liquid crystal display) television - Google Patents
Dynamic backlight regulation method of LCD (liquid crystal display) television Download PDFInfo
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- CN102377956B CN102377956B CN201010248796.4A CN201010248796A CN102377956B CN 102377956 B CN102377956 B CN 102377956B CN 201010248796 A CN201010248796 A CN 201010248796A CN 102377956 B CN102377956 B CN 102377956B
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Abstract
The invention discloses a dynamic backlight regulation method of an LCD (liquid crystal display) television. The method comprises the following steps: firstly acquiring an optimal dynamic backlight value by utilizing a manual mode; then running software, starting a dynamic backlight regulation mode, acquiring the current screen brightness by virtue of an area brightness histogram statistic mode and reading the register value of a brightness histogram; comparing the read data with a preset brightness threshold value, if the read data is not greater than the preset brightness threshold value, continuing reading the data of the brightness histogram, and if the read data is greater than the preset brightness threshold value, carrying out dynamic backlight regulation by utilizing as the obtained optimal dynamic backlight value as a parameter; and writing the changed value into a backlight regulation register. In the method, a dynamic backlight value function part is added in television software, and dynamic backlight regulation is carried out according to the relative ratio of the original brightness and power consumption of different display screens, so that not only can energy star authentication requirements be met, but also higher display brightness can be provided, thereby acquiring the optimal complete machine performance.
Description
Technical field
The present invention relates to technical field of television sets, particularly relate to a kind of method that liquid crystal TV set dynamic backlight regulates.
Background technology
Energy Star authentication ，Ta Shi Yixiangyou U.S. government dominates, mainly for the energy conservation plan of consumption electronic products.Object is in order to reduce energy resource consumption and to reduce the greenhouse gases that power plant discharges.This plans, and tool is not mandatory, and the label of Energy Star just can stick on its qualified products in the manufacturer of spontaneous this plan of cooperation.The external client of present stage part can require product to reach the standard that Energy Star authenticates, the corresponding different energy consumption index requirements of different versions, routine EPA4.0.
EPA is the abbreviation of Environmental Protection Agency, i.e. Environmental Protection Agency.The version that EPA4.0 refers to Energy Star authentication is 4.0, and the product of stamping Energy Star label need meet the standard clause of 4.0 versions.
Because the energy resource consumption of LCD TV depends primarily on display screen, and the energy resource consumption of display screen can be by changing reducing of backlight value, reduces time backlight and will affect the high-high brightness of display screen.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, a kind of method that provides liquid crystal TV set dynamic backlight to regulate, according to the relative ratio of the original brightness of different display screens and power consumption, to be used as optimal dynamic backlight value to carry out dynamic backlight adjusting, both met Energy Star authentication requesting, can provide higher display brightness again, thereby obtain best overall performance.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method that liquid crystal TV set dynamic backlight regulates, comprising:
A, employing manual type are obtained optimal dynamic backlight value;
The micro treatment module operating software of B, liquid crystal TV set, starts dynamic backlight adjustment manner;
C, by the micro treatment module of liquid crystal TV set, by the mode of regional luminance statistics with histogram, obtain current picture brightness, and read the register value of brightness histogram;
D, micro treatment module compare the data that read and predefined luminance threshold, and judge whether the data that read are greater than predefined luminance threshold, if it is carry out next step, otherwise, return to step C;
E, micro treatment module operating software is opened dynamic backlight regulatory function automatically, it is to take optimal dynamic backlight value that steps A obtained to regulate as parameter that this dynamic backlight regulates, in adjustment process, to carry out dynamic backlight numerical computations by micro treatment module, and according to result of calculation, produce corresponding control signal and remove to control backlight electric power, and by the dynamic adjustments of carrying out backlight that regulates backlight circuit to liquid crystal display screen, micro treatment module writes adjusting register backlight by the numerical value after changing simultaneously, after dynamic backlight has regulated, by micro treatment module operating software, close dynamic backlight regulatory function, then return to step C.
The acquisition process of the optimal dynamic backlight value of described steps A, comprising:
A1, play preassigned test collection of illustrative plates, measure high-high brightness;
A2, play preassigned test collection of illustrative plates, measure power consumption;
High-high brightness and power consumption that A3, basis measure, the Location of requirement in conjunction with user goes out corresponding dynamic backlight value simultaneously;
A4, this dynamic backlight value is defined as carrying out according to the pattern of EPA4.0 the optimal dynamic backlight value of dynamic backlight adjusting.
The process of the resolution chart spectrometry high-high brightness of the broadcasting appointment of described steps A 1, comprising:
A11, under darkroom, test, ambient brightness need be less than or equal to 1LUX, allows television set be aged to working stability state, and the various default conditions that dispatch from the factory that are set to;
A12, according to user prompting, menu is set, choice criteria pattern, is switched to HDHI passage, at HDMI passage, receives the dynamic video active signal from DVD player;
A13, at HDMI passage, play to specify figure spectrum signal after ten minutes, the brightness of test television display screen central point, obtains maximum brightness value.
The process of the resolution chart spectrometry power consumption of the broadcasting appointment of described steps A 2, comprising:
After A21, television boot-strap, according to start, prompting menu is set, choice criteria pattern;
A22, do not change any OSD menu setting, be directly switch to HDMI passage, at HDMI passage, receive the dynamic video active signal from DVD player, after complete machine work 1 hour is stable, start test;
A23, television set is normally connected with power meter, starts reading, continue to play active signal ten minutes, the average power content that ten minutes are read is as required magnitude of power.
The invention has the beneficial effects as follows, owing to having adopted, in TV software, increase dynamic backlight value funtion part, by the mode of regional luminance statistics with histogram, obtain current picture brightness, and according to the relative ratio of the original brightness of different display screens and power consumption, be used as optimal dynamic backlight value and carry out dynamic backlight adjusting, both met Energy Star authentication requesting, can provide higher display brightness again, thereby obtain best overall performance.
Below in conjunction with drawings and Examples, the present invention is described in further detail; But the method that a kind of liquid crystal TV set dynamic backlight of the present invention regulates is not limited to embodiment.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present invention;
Fig. 2 is the flow chart of steps of definite optimal dynamic backlight value of the present invention;
Fig. 3 is Software for Design flow chart of the present invention.
Embodiment
Embodiment, shown in Figure 1, Fig. 1 is system architecture diagram of the present invention.The method that a kind of liquid crystal TV set dynamic backlight of the present invention regulates, is to adopt the system configuration shown in Fig. 1 to realize, and the micro treatment module 12 of system configuration comprises dynamic backlight numerical computations 121 and vision signal processes 122; The output of vision signal input 11 is connected to vision signal and processes 122 input; The output of vision signal processing 122 is connected to vision signal output 15; The output of vision signal output 15 is connected to liquid crystal display screen 16; The output of dynamic backlight numerical computations 121 is connected to the input of controlling backlight electric power 13; The output of controlling backlight electric power 13 is connected to the input that regulates backlight 14; Regulate backlight 14 input to be connected to liquid crystal display screen 16.
Shown in Fig. 2 and Fig. 3, the method that a kind of liquid crystal TV set dynamic backlight of the present invention regulates, comprises the steps:
A, employing manual type are obtained optimal dynamic backlight value;
C, by the micro treatment module 12 of liquid crystal TV set, by the mode of regional luminance statistics with histogram, obtain current picture brightness, and read the register value of brightness histogram; (as shown in the frame 301 of Fig. 3);
D, micro treatment module 12 compare the data that read and predefined luminance threshold, and judge whether the data that read are greater than predefined luminance threshold, if it is carry out next step, otherwise, return to step C; (as shown in the frame 302 of Fig. 3); This luminance threshold can be the maximum brightness value of display screen;
E, micro treatment module 12 operating softwares are opened dynamic backlight regulatory function automatically, it is to take optimal dynamic backlight value that steps A obtained to regulate as parameter that this dynamic backlight regulates, in adjustment process, to carry out dynamic backlight numerical computations by micro treatment module 12, and according to result of calculation, produce corresponding control signal and remove to control backlight electric power, and by the dynamic adjustments of carrying out backlight that regulates backlight circuit to liquid crystal display screen, micro treatment module 12 writes adjusting register backlight by the numerical value after changing simultaneously, after dynamic backlight has regulated, by micro treatment module 12 operating softwares, close dynamic backlight regulatory function, then return to step C, (as shown in the frame 303 of Fig. 3).
The acquisition process of the optimal dynamic backlight value of described steps A:
First to carry out equipment connection, the one, TV is normally connected with power meter; The 2nd, by HDMI line, connect DVD equipment to TV; The 3rd, the center of the alignment probe test panel of brightness measuring instrument (CA210);
Its acquisition process, comprises the steps:
A1, play preassigned test collection of illustrative plates Three Bars (ICE62087:200x.60Hz scanvertical scan frequency), measure high-high brightness; (as shown in the frame 201 of Fig. 2);
A2, play preassigned test collection of illustrative plates, measure power consumption; (as shown in the frame 202 of Fig. 2);
A3, according to the high-high brightness and the power consumption that measure, in conjunction with user's demand (such as user is to showing the requirement etc. of image), determine corresponding dynamic backlight value simultaneously; (as shown in the frame 203 of Fig. 2);
A4, this dynamic backlight value is defined as carrying out according to the pattern of EPA4.0 the optimal dynamic backlight value of dynamic backlight adjusting; (as shown in the frame 203 of Fig. 2).
The process of the resolution chart spectrometry high-high brightness of the broadcasting appointment of described steps A 1, comprising:
A11, under darkroom, test, ambient brightness need be less than or equal to 1LUX, allows television set be aged to working stability state, and the various default conditions that dispatch from the factory that are set to;
A12, according to user prompting, menu is set, choice criteria pattern, is switched to HDHI passage, at HDMI passage, receives the dynamic video active signal from DVD player;
A13, at HDMI passage, play to specify figure spectrum signal after ten minutes, the brightness of test television display screen central point, obtains maximum brightness value.
The process of the resolution chart spectrometry power consumption of the broadcasting appointment of described steps A 2, comprising:
After A21, television boot-strap, according to start, prompting menu is set, choice criteria pattern;
A22, do not change any OSD menu setting, be directly switch to HDMI passage, at HDMI passage, receive the dynamic video active signal from DVD player, after complete machine work 1 hour is stable, start test;
A23, television set is normally connected with power meter, starts reading, continue to play active signal ten minutes, the average power content that ten minutes are read is as required magnitude of power.
The method that a kind of liquid crystal TV set dynamic backlight of the present invention regulates, in TV software, to increase dynamic backlight value funtion part, by the mode of regional luminance statistics with histogram, obtain current picture brightness, and according to the relative ratio of the original brightness of different display screens and power consumption, be used as optimal dynamic backlight value and carry out dynamic backlight adjusting, both met Energy Star authentication requesting, can provide higher display brightness again, thereby obtain best overall performance.
Above-described embodiment is only used for further illustrating the method that a kind of liquid crystal TV set dynamic backlight of the present invention regulates; but the present invention is not limited to embodiment; any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all fall in the protection range of technical solution of the present invention.
Claims (2)
1. the method that liquid crystal TV set dynamic backlight regulates, is characterized in that, comprising:
A, employing manual type are obtained optimal dynamic backlight value;
The micro treatment module operating software of B, liquid crystal TV set, starts dynamic backlight adjustment manner;
C, by the micro treatment module of liquid crystal TV set, by the mode of regional luminance statistics with histogram, obtain current picture brightness, and read the register value of brightness histogram;
D, micro treatment module compare the data that read and predefined luminance threshold, and judge whether the data that read are greater than predefined luminance threshold, if it is carry out next step, otherwise, return to step C;
E, micro treatment module operating software is opened dynamic backlight regulatory function automatically, it is to take optimal dynamic backlight value that steps A obtained to regulate as parameter that this dynamic backlight regulates, in adjustment process, to carry out dynamic backlight numerical computations by micro treatment module, and according to result of calculation, produce corresponding control signal and remove to control backlight electric power, and by the dynamic adjustments of carrying out backlight that regulates backlight circuit to liquid crystal display screen, micro treatment module writes adjusting register backlight by the numerical value after changing simultaneously, after dynamic backlight has regulated, by micro treatment module operating software, close dynamic backlight regulatory function, then return to step C,
The acquisition process of the optimal dynamic backlight value of described steps A, comprising:
A1, play preassigned test collection of illustrative plates, measure high-high brightness;
A2, play preassigned test collection of illustrative plates, measure power consumption;
High-high brightness and power consumption that A3, basis measure, the Location of requirement in conjunction with user goes out corresponding dynamic backlight value simultaneously;
A4, this dynamic backlight value is defined as carrying out according to the pattern of EPA4.0 the optimal dynamic backlight value of dynamic backlight adjusting;
The process of the preassigned resolution chart spectrometry of the broadcasting high-high brightness of described steps A 1, comprising:
A11, under darkroom, test, ambient brightness need be less than or equal to 1LUX, allows television set be aged to working stability state, and the various default conditions that dispatch from the factory that are set to;
A12, according to user prompting, menu is set, choice criteria pattern, is switched to HDHI passage, at HDMI passage, receives the dynamic video active signal from DVD player;
A13, at HDMI passage, play to specify figure spectrum signal after ten minutes, the brightness of test television display screen central point, obtains maximum brightness value.
2. the method that a kind of liquid crystal TV set dynamic backlight according to claim 1 regulates, is characterized in that: the process of the preassigned resolution chart spectrometry of the broadcasting power consumption of described steps A 2, comprising:
After A21, television boot-strap, according to start, prompting menu is set, choice criteria pattern;
A22, do not change any OSD menu setting, be directly switch to HDMI passage, at HDMI passage, receive the dynamic video active signal from DVD player, after complete machine work 1 hour is stable, start test;
A23, television set is normally connected with power meter, starts reading, continue to play active signal ten minutes, the average power content that ten minutes are read is as required magnitude of power.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102647832B (en) * | 2012-04-16 | 2014-05-07 | 深圳创维－Rgb电子有限公司 | Dynamic backlight adjustment method, system and television |
| CN103313002B (en) * | 2013-07-05 | 2017-02-22 | 中邮科通信技术股份有限公司 | Situation-based mobile streaming media energy-saving optimization method |
| CN103617791B (en) * | 2013-10-23 | 2016-04-13 | 四川长虹电器股份有限公司 | The LCD screen backlight control method of composite static and Dynamic controlling |
| CN104112430B (en) * | 2014-07-05 | 2016-05-11 | 广东欧珀移动通信有限公司 | A kind of system and method that promotes the black effect of display screen one and dynamic contrast |
| CN104918079B (en) * | 2015-06-04 | 2019-06-11 | Tcl集团股份有限公司 | A kind of natural light realization method and system of module TV |
| CN106991972B (en) | 2017-05-02 | 2019-05-03 | 深圳市华星光电半导体显示技术有限公司 | A kind of booting brightness control method of organic luminous panel |
| CN108281125B (en) | 2018-01-05 | 2021-04-20 | 华为技术有限公司 | Method, device and equipment for adjusting backlight brightness according to human eye characteristics |
| CN112689107B (en) * | 2020-12-16 | 2022-02-08 | 四川长虹电器股份有限公司 | Method for dynamically adjusting backlight |
| CN117192822B (en) * | 2023-09-12 | 2024-05-24 | 深圳市鑫美芝实业有限公司 | Intelligent circuit testing system and method based on backlight module |
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