CN111583875A - Television energy efficiency control method for improving image quality effect - Google Patents

Television energy efficiency control method for improving image quality effect Download PDF

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Publication number
CN111583875A
CN111583875A CN202010342814.9A CN202010342814A CN111583875A CN 111583875 A CN111583875 A CN 111583875A CN 202010342814 A CN202010342814 A CN 202010342814A CN 111583875 A CN111583875 A CN 111583875A
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China
Prior art keywords
backlight
television
brightness
picture
value
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Pending
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CN202010342814.9A
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Chinese (zh)
Inventor
汪琴
程明
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Anhui Konka Electronics Co Ltd
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Anhui Konka Electronics Co Ltd
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Priority to CN202010342814.9A priority Critical patent/CN111583875A/en
Publication of CN111583875A publication Critical patent/CN111583875A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness

Abstract

The invention provides a television energy efficiency control method for improving image quality effect, which is characterized in that a plurality of backlight interface values are set, and each backlight interface value is associated with a brightness interval; and when the movable picture is played, adjusting the backlight brightness of the television according to the backlight boundary value corresponding to the average brightness of the television picture. According to the television energy efficiency control method for improving the image quality effect, when a television plays a moving picture, the backlight brightness can be automatically adjusted according to the preset corresponding relation between the average brightness of the picture and the backlight brightness, so that the backlight is brighter when the television plays a high-brightness picture; when a dark picture is played, the backlight is darker, so that the contrast is increased, and the damage of the energy efficiency index to the picture quality is reduced. The invention achieves the purposes of reducing dynamic power and improving energy efficiency index.

Description

Television energy efficiency control method for improving image quality effect
Technical Field
The invention relates to the technical field of energy-saving televisions, in particular to a television energy efficiency control method for improving the image quality effect.
Background
The existing energy efficiency improvement technology comprises the following steps: when the television plays a static picture, the backlight brightness of the television is unchanged; when the television plays the dynamic picture, the television can recognize the playing state and automatically reduce the backlight brightness through a software algorithm, so that the dynamic power consumption is reduced, and the energy efficiency index of the television is improved.
At present, the backlight brightness of the television is adjusted by pulse width modulation, namely PWM dimming. The specific method is that a PWM control signal is given to a backlight control chip of the television: when the duty ratio of the PWM is 100%, the backlight brightness of the television is highest at the moment; when the duty ratio of the PWM is close to 0, the backlight brightness of the television is lowest at this time. By controlling different duty ratios of the PWM signals, the brightness of the backlight of the television can be adjusted.
The television contrast is an important aspect for measuring the quality of the television image. The contrast of the television is calculated by dividing the brightest brightness of the television by the darkest brightness of the television, and the ratio of the brightness to the darkest brightness is the contrast. The television picture with high contrast has bright color and strong layering sense. Because the method of improving the energy efficiency of the existing television is to reduce the brightness of all pictures when the television plays the movable picture, the contrast of the television is reduced when a user watches the movable picture, and the watching experience of the user is influenced.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a television energy efficiency control method for improving the image quality effect.
The invention provides a television energy efficiency control method for improving image quality effect, which is characterized in that a plurality of backlight interface values are set, and each backlight interface value is associated with a brightness interval; and when the movable picture is played, adjusting the backlight brightness of the television according to the backlight boundary value corresponding to the average brightness of the television picture.
Preferably, the plurality of backlight interface values are respectively: l is1、L2、L3、……L(n-1)、Ln；L1To LnSequentially increase, and, LnIs the maximum backlight value.
Preferably, the backlight interface value LiThe associated brightness interval is (W)i-1,Wi]，|Wi-2×Wi-1+Wi-2|≤2。
Preferably, Fk＝Lk+1-Lk，1≤k≤n-1；
Figure BDA0002469081630000021
Fg-1≤Fg≥Fg+1(ii) a And, Fp≤Fp+1，1≤p≤g-2。；Fq≥Fq+1，g+1≤q≤n-1。
A television energy efficiency control system for improving image quality effect comprises: the device comprises a parameter setting module, a backlight acquisition module and a backlight module;
a plurality of backlight boundary values are preset in the parameter setting module, and each backlight boundary value is associated with a brightness interval;
the backlight acquisition module is respectively connected with the parameter setting module and the television control module;
the backlight acquisition module is used for acquiring the average brightness of the current moving picture through the television control module and acquiring a corresponding backlight boundary value as a target backlight value according to a brightness interval in which the average brightness is positioned;
the backlight module is connected with the backlight acquisition module and used for adjusting the backlight brightness according to the target backlight value.
Preferably, the parameter setting module is further connected to the television control module, and the parameter setting module obtains the parameter adjusting instruction through the television control module and is used for adjusting the backlight interface value and the brightness interval according to the parameter adjusting instruction.
According to the television energy efficiency control method for improving the image quality effect, when a television plays a moving picture, the backlight brightness can be automatically adjusted according to the preset corresponding relation between the average brightness of the picture and the backlight brightness, so that the backlight is brighter when the television plays a high-brightness picture; when a dark picture is played, the backlight is darker, so that the contrast is increased, and the damage of the energy efficiency index to the picture quality is reduced. The invention achieves the purposes of reducing dynamic power and improving energy efficiency index.
The invention integrates functions, and through the correspondence between the backlight boundary value and the brightness interval, the invention ensures that the change range of the image brightness played by the television is small, and the backlight brightness is not changed, thereby avoiding the frequent operation of the backlight, ensuring the stability of the backlight brightness, improving the eye comfort and further reducing the power consumption of the backlight module.
According to the invention, on the basis of not changing hardware, only a software algorithm needs to be adjusted, so that the damage of the energy efficiency index to the image quality of the television can be greatly reduced, the contrast of the television is increased, the watching experience of a user is improved, and economic value is created for the society.
Drawings
Fig. 1 is a flowchart of a method for controlling television energy efficiency to improve image quality according to the present invention.
Detailed Description
Referring to fig. 1, according to the television energy efficiency control method for improving the image quality, firstly, a plurality of backlight interface values are set, and each backlight interface value is associated with a brightness interval; and then, when the movable picture is played, adjusting the backlight brightness of the television according to the backlight boundary value corresponding to the average brightness of the television picture.
Thus, in this embodiment, when the television plays the active picture, the backlight brightness can be automatically adjusted according to the preset correspondence between the average brightness of the picture and the backlight brightness, so that the backlight is brighter when the television plays the high-brightness picture; when a dark picture is played, the backlight is darker, so that the contrast is increased, and the damage of the energy efficiency index to the picture quality is reduced.
In addition, in the embodiment, through the correspondence between the backlight boundary value and the brightness interval, the brightness conversion range of the picture played by the television is small, and the backlight brightness is not changed, so that frequent operation on the backlight is avoided, the stability of the backlight brightness is ensured, the eye comfort is improved, and the power consumption of the backlight module is further reduced.
Specifically, in this embodiment, the backlight interface values are: l is1、L2、L3、……L(n-1)、Ln；L1To LnSequentially increase, and, LnThe maximum backlight value is used to ensure the display requirement of the customer on the highlight picture.
In this embodiment, the backlight interface value LiThe associated brightness interval is (W)i-1,Wi]，Wi-2×Wi-1+Wi-2|≤2。
In this embodiment, Fk＝Lk+1-Lk，1≤k≤n-1；
Figure BDA0002469081630000041
Fg-1≤Fg≥Fg+1(ii) a And, Fp≤Fp+1，1≤p≤g-2。；Fq≥Fq+1，g+1≤q≤n-1。
Therefore, the darker the dark picture backlight is, the brighter the bright picture backlight is, the more stable the backlight is in most of the time, and the eyestrain is avoided while the picture quality is ensured.
The invention is further explained below with reference to a specific embodiment.
In this embodiment, the backlight brightness is varied from 0 to 100, and the specific parameters are set as follows: n is 6 and g is 3.
L1＝5，W0＝0，W1＝42
L2＝10，W2＝85
L3＝20，W3＝128.
L4＝60，W4＝170
L5＝85，W5＝192
L6＝100，W6＝255
Specifically, the parameter settings in this embodiment can be represented by the following table 1:
table 1: correspondence between backlight and average brightness of picture
Luminance interval Back light
(0,42] 5
(42，85] 10
(85，128] 20
(128，170] 60
(170，192] 85
(192，255] 100
The invention also provides a television energy efficiency control system for improving the image quality effect, which comprises the following components: the device comprises a parameter setting module, a backlight obtaining module and a backlight module.
A plurality of backlight boundary values are preset in the parameter setting module, and each backlight boundary value is associated with a brightness interval.
The backlight acquisition module is respectively connected with the parameter setting module and the television control module.
The backlight acquisition module is used for acquiring the average brightness of the current moving picture through the television control module and acquiring a corresponding backlight boundary value as a target backlight value according to a brightness interval where the average brightness is located.
The backlight module is connected with the backlight acquisition module and used for adjusting the backlight brightness according to the target backlight value.
The parameter setting module is also connected with the television control module, and the parameter setting module acquires a parameter adjusting instruction through the television control module and is used for adjusting the backlight boundary value and the brightness interval according to the parameter adjusting instruction. Namely, the backlight boundary value and the brightness interval are added into the menu, so that the parameters are adjusted by tools such as remote control and the like, and the specificity and the flexibility of backlight adjustment are improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.

Claims (6)

1. A television energy efficiency control method for improving image quality effect is characterized in that a plurality of backlight boundary values are set, and each backlight boundary value is associated with a brightness interval; and when the movable picture is played, adjusting the backlight brightness of the television according to the backlight boundary value corresponding to the average brightness of the television picture.
2. The method according to claim 1, wherein the backlight interface values are respectively: l is1、L2、L3、……L(n-1)、Ln；L1To LnSequentially increase, and, LnIs the maximum backlight value.
3. The method of claim 1, wherein the backlight interface value L is a value that is determined by a threshold value of the backlight interface value LiThe associated brightness interval is (W)i-1,Wi]，|Wi-2×Wi-1+Wi-2|≤2。
4. The method of claim 1, wherein F is the energy efficiency control method for improving the image qualityk＝Lk+1-Lk，1≤k≤n-1；
Figure FDA0002469081620000011
Fg-1≤Fg≥Fg+1(ii) a And, Fp≤Fp+1，1≤p≤g-2。；Fq≥Fq+1，g+1≤q≤n-1。
5. A television energy efficiency control system for improving image quality effect is characterized by comprising: the device comprises a parameter setting module, a backlight acquisition module and a backlight module;
a plurality of backlight boundary values are preset in the parameter setting module, and each backlight boundary value is associated with a brightness interval;
the backlight acquisition module is respectively connected with the parameter setting module and the television control module;
the backlight acquisition module is used for acquiring the average brightness of the current moving picture through the television control module and acquiring a corresponding backlight boundary value as a target backlight value according to a brightness interval in which the average brightness is positioned;
the backlight module is connected with the backlight acquisition module and used for adjusting the backlight brightness according to the target backlight value.
6. The system of claim 5, wherein the parameter setting module is further connected to the TV control module, and the parameter setting module obtains the parameter adjustment command through the TV control module and adjusts the backlight interface value and the brightness interval according to the parameter adjustment command.
CN202010342814.9A 2020-04-27 2020-04-27 Television energy efficiency control method for improving image quality effect Pending CN111583875A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112489601A (en) * 2020-12-10 2021-03-12 深圳市瀚达美电子有限公司 MiniLED backlight brightness adjusting method and system and backlight device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592193A (en) * 1994-03-10 1997-01-07 Chunghwa Picture Tubes, Ltd. Backlighting arrangement for LCD display panel
CN101751874A (en) * 2008-11-28 2010-06-23 康佳集团股份有限公司 LCD TV intelligent dynamic backlight control method
CN102402970A (en) * 2011-12-21 2012-04-04 Tcl王牌电器(惠州)有限公司 Method and device for adjusting contrast of display screen
CN103077684A (en) * 2013-01-23 2013-05-01 京东方科技集团股份有限公司 Backlight adjusting method, device and display screen
CN103617791A (en) * 2013-10-23 2014-03-05 四川长虹电器股份有限公司 Liquid crystal display backlight control method with combination of static and dynamic control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592193A (en) * 1994-03-10 1997-01-07 Chunghwa Picture Tubes, Ltd. Backlighting arrangement for LCD display panel
CN101751874A (en) * 2008-11-28 2010-06-23 康佳集团股份有限公司 LCD TV intelligent dynamic backlight control method
CN102402970A (en) * 2011-12-21 2012-04-04 Tcl王牌电器(惠州)有限公司 Method and device for adjusting contrast of display screen
CN103077684A (en) * 2013-01-23 2013-05-01 京东方科技集团股份有限公司 Backlight adjusting method, device and display screen
CN103617791A (en) * 2013-10-23 2014-03-05 四川长虹电器股份有限公司 Liquid crystal display backlight control method with combination of static and dynamic control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112489601A (en) * 2020-12-10 2021-03-12 深圳市瀚达美电子有限公司 MiniLED backlight brightness adjusting method and system and backlight device

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Application publication date: 20200825