CN105321480B - A kind of LCD backlight adjusting method and device - Google Patents
A kind of LCD backlight adjusting method and device Download PDFInfo
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- CN105321480B CN105321480B CN201410351116.XA CN201410351116A CN105321480B CN 105321480 B CN105321480 B CN 105321480B CN 201410351116 A CN201410351116 A CN 201410351116A CN 105321480 B CN105321480 B CN 105321480B
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Abstract
The invention discloses a kind of LCD backlight adjusting method and devices, there is delay to LCD reported datas to solve the problems, such as to exist in the prior art optical sensor, wherein LCD backlight adjusting method, including：The module of LCD includes optical sensor, and the drive module of LCD includes the drive module of optical sensor；Light sensation data are read from the drive module of optical sensor；The backlight illumination that LCD is adjusted according to light sensation data improves the response efficiency of LCD backlight adjusting.
Description
Technical field
The present invention relates to fields of communication technology, in particular to a kind of LCD (Liquid Crystal Display, liquid
Crystal display) backlight adjusting method and device.
Background technology
The automatic adjustment of LCD backlight is the function that current smart mobile phone is all supported, can allow the bright of mobile phone screen
The automatic ambient light for adapting to surrounding of degree, can not only provide more suitable screen intensity to the user, but also save power consumption.At present
LCD backlight automatic adjustment implementation be generally：One loophole is set on mobile phone top, passes through this using optical sensor
Loophole detects the ambient light around mobile phone, then adjusts LCD backlight value according to the value of optical sensor detection.However, this
The effect that backlight automatically adjusts scheme is less desirable, it may occur that the too strong or too dark situation of LCD backlight.Cause this phenomenon
Mainly following several reasons：First, ambient light value and the value that optical sensor detects be not corresponding.Because optical sensor is from LCD
There is a distance, can generally add a silica gel sheath among the two, light is detected by optical sensor to be needed by a silica gel sheath,
This would necessarily affect the consistency of the value and surrounding environment light of optical sensor detection.Secondly as the light-transmitting opening of setting can not
It can guarantee that influence of each mobile phone to optical sensor is consistent, therefore consistent adjustment can not be carried out to LCD backlight, therefore meeting
The LCD backlight effect of different mobile phones is caused to have differences.However, main problem existing for said program is, optical sensor is to LCD
The data that the mode of reported data causes LCD to obtain have the delay, optical sensor to be to the path of LCD reported datas：Light passes
Sensor driving->Hardware abstraction layer->Framework layer->Using data are obtained, the data transfer path of LCD backlight setting is then reached
For：Using acquisition data->Framework layer->LCD driving setting backlights are adjusted, and therefore, this mode can lead to the adjusting of LCD backlight
Reaction is not sensitive enough, influences user experience.
Invention content
The present invention provides a kind of LCD backlight adjusting method and device, to solve to exist in the prior art optical sensor to
There is delay in LCD reported datas.
According to an aspect of the invention, there is provided a kind of LCD backlight adjusting method, the module of LCD includes light sensing
The drive module of device, LCD includes the drive module of optical sensor；Light sensation data are read from the drive module of optical sensor；
The backlight illumination of LCD is adjusted according to light sensation data.
Further, the above method further includes：Before reading light sensation data, when the operating mode for detecting LCD is the back of the body
When light automatically adjusts pattern, enable signal is sent to the drive module of optical sensor, the drive module to control optical sensor is opened
Beginning work.
Wherein, light sensation data include：Light sensation value；The above method further includes：After reading light sensation data and according to light
Before feeling the backlight illumination that data adjust LCD, the variation of light sensation value is read beyond default when the light sensation value read is more last
When value, the backlight illumination of LCD is just adjusted according to light sensation data.
Wherein, include according to the backlight illumination of light sensation data adjusting LCD：From the configuration file of LCD obtain light sensation value with
The mapping table of backlight value；It is bright that backlight corresponding with the light sensation value in light sensation data is searched in the mapping table of light sensation value and backlight value
Degree；Based on the backlight illumination found out, the backlight illumination of LCD is adjusted.
Wherein, the sensitivity speck of optical sensor is uniformly distributed on the glass screen of LCD, sensitivity speck at least two.
According to another aspect of the present invention, a kind of LCD backlight regulating device is provided, the module of LCD includes light sensing
The drive module of device, LCD includes the drive module of optical sensor；Acquisition module, for reading light sensation number from LCD drivings
According to；First adjustment module, the backlight illumination for adjusting LCD according to light sensation data.
Above-mentioned apparatus further includes：Detection module is used for before reading light sensation data, when the operating mode for detecting LCD
When automatically adjusting pattern for backlight, enable signal is sent to the drive module of optical sensor, to control the driving mould of optical sensor
BOB(beginning of block) works.
Wherein, light sensation data include：Light sensation value；Above-mentioned apparatus further includes：Second adjustment module, for reading light sensation number
According to later and according to light sensation data adjust LCD backlight illumination before, when the more last reading light sensation of the light sensation value read
When the variation of value exceeds preset value, the backlight illumination of LCD is just adjusted according to light sensation data.
Further, the first adjustment module is specifically used for, and reflecting for light sensation value and backlight value is obtained from the configuration file of LCD
Firing table；Backlight illumination corresponding with the light sensation value in light sensation data is searched in the mapping table of light sensation value and backlight value；Based on looking into
The backlight illumination of LCD is adjusted in the backlight illumination found out.
Wherein, the sensitivity speck of optical sensor is uniformly distributed on the glass screen of LCD, sensitivity speck at least two.
Optical sensor is arranged in LCD drive modules by the way that optical sensor is arranged in LCD modules in the embodiment of the present invention
Drive module so that LCD drive modules can be directly obtained the light sensation data that optical sensor detects, so as to according to light sensation
Data carry out the adjusting of LCD backlight, solve the problems, such as that optical sensor exists to LCD reported datas in the prior art and are delayed, carry
The speed of response that high LCD backlight is adjusted.
Description of the drawings
Fig. 1 is the flow chart of the LCD backlight adjusting method of the embodiment of the present invention；
Fig. 2 is the structure diagram of the drive module of the LCD of the embodiment of the present invention；
Fig. 3 is the schematic diagram that the sensitivity speck of optical sensor is distributed on the lcd screen；
Fig. 4 is the structure diagram of the LCD backlight regulating device of the embodiment of the present invention.
Specific implementation mode
Further to illustrate the present invention to reach the technological means and effect that predetermined purpose is taken, below in conjunction with attached drawing
And preferred embodiment, the present invention is described in detail as after.
Fig. 1 is the flow chart of the LCD backlight adjusting method of the embodiment of the present invention.Wherein, the module of LCD includes light sensing
The drive module of device, LCD includes the drive module of optical sensor, as shown in Figure 1, this approach includes the following steps：
Step 101：Light sensation data are read from the drive module of optical sensor；
Step 102：The backlight illumination of LCD is adjusted according to light sensation data.
Before above-mentioned steps 101, LCD backlight adjusting method can also include：When the operating mode for detecting LCD is the back of the body
When light automatically adjusts pattern, enable signal is sent to the drive module of optical sensor, the drive module to control optical sensor is opened
Beginning work.That is, if current system be arranged automatic backlight regulatory function when, just enable optical sensor, make its detection LCD around when
Preceding light sensation data.
Wherein above-mentioned light sensation data include：Light sensation value, above-mentioned LCD backlight adjusting method can also include：Reading light
Data are felt later and before the backlight illumination for adjusting LCD according to light sensation data, when the more last reading of light sensation value read
When the variation of light sensation value exceeds preset value, the backlight illumination of LCD is just adjusted according to light sensation data.
Wherein, the backlight illumination that LCD is adjusted according to light sensation data can specifically include：
The mapping table of light sensation value and backlight value is obtained from the configuration file of LCD；
Backlight illumination corresponding with the light sensation value in light sensation data is searched in the mapping table of light sensation value and backlight value；
Based on the backlight illumination found out, the backlight illumination of LCD is adjusted.
Fig. 2 is the structure diagram of the drive module of the LCD of the embodiment of the present invention, as shown in Fig. 2, having in LCD modules 20
Optical sensor, the drive module 21 of LCD include the drive module of optical sensor, i.e. LCD shares a driving with optical sensor
Module, in this way, LCD drive modules can directly acquire the light sensation value around the LCD that sensor detects, i.e., light sensation value is without warp
The i.e. reachable LCD drivings of transmission path for crossing two individual drive modules, avoid delay of the light sensation value in transmission process.
Fig. 3 is the schematic diagram that the sensitivity speck of optical sensor is distributed on the lcd screen, as shown in figure 3, the sensitivity speck of optical sensor
It is uniformly distributed on the glass screen of LCD, Fig. 3 shows distribution situation of three sensitivity specks on LCD glass screens, in the present embodiment
The number for the sensitivity speck that sensor is arranged on LCD glass screens is unlimited, and at least two, sensitivity speck can be arranged directly on LCD
Glass screen on, there is no any interval between such sensitivity speck and glass, make the light sensation around the LCD screen that optical sensor detects
Value is more accurate.
To carry out the LCD backlight adjusting method of the embodiment of the present invention with the program execution flow of LCD drive modules below
It illustrates：
When having selected LCD to automatically adjust the function of backlight in system, the auto-backlight in driving is adjusted back to LCD
() function；
Optical sensor is enabled in auto-backlight () function in LCD drivings, and threshold value is set, which is used for
Indicate the variation of the light sensation value currently obtained and the last light sensation value obtained, that is, the difference between the two, when light sensation value phase twice
Than when variation is more than the threshold value, it is determined that need to adjust the backlight illumination of LCD；
When ambient light around LCD changes, an interruption is generated, calls the als_get_data in LCD drivings
() function reads current light sensation value in als_get_data () function, and reads the configuration file of LCD, according to configuration file
In light sensation value and the mapping table of backlight value the backlight illumination of current LCD is set.
Fig. 4 is the structure diagram of the LCD backlight regulating device of the embodiment of the present invention, wherein the module of LCD includes that light passes
The drive module of sensor, LCD includes the drive module of optical sensor；
As shown, the LCD backlight regulating device includes consisting of part：
Acquisition module 41, for reading light sensation data from LCD drivings；
First adjustment module 42, the backlight illumination for adjusting LCD according to light sensation data.
LCD backlight regulating device provided in this embodiment can be only provided in the case that automatic backlight is adjusted just in system
It carries out backlight and adjusts operation, be based on this, above-mentioned apparatus 40 can also include：
Detection module is used for before reading light sensation data, when the operating mode for detecting LCD automatically adjusts mould for backlight
When formula, enable signal is sent to the drive module of optical sensor, the drive module to control optical sensor is started to work.
Light sensation data can specifically include light sensation value.
Above-mentioned apparatus 40 can also include：Second adjustment module, for after reading light sensation data and according to light sensation
Before data adjust the backlight illumination of LCD, the variation of light sensation value is read beyond preset value when the light sensation value read is more last
When, the backlight illumination of LCD is just adjusted according to light sensation data.
First adjustment module 42 specifically can be used for, and the mapping of light sensation value and backlight value is obtained from the configuration file of LCD
Table；Backlight illumination corresponding with the light sensation value in light sensation data is searched in the mapping table of light sensation value and backlight value；Based on lookup
The backlight illumination of LCD is adjusted in the backlight illumination gone out.
Wherein, the sensitivity speck of optical sensor is uniformly distributed on the glass screen of LCD, sensitivity speck at least two.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of LCD backlight adjusting method, which is characterized in that the module of the LCD includes optical sensor, the drive of the LCD
Dynamic model block includes the drive module of the optical sensor, i.e. LCD shares a drive module with the optical sensor, so that
The drive module of LCD directly acquires the optical sensor and detects light sensation data；
Light sensation data are read from the drive module of the LCD；
The backlight illumination of the LCD is adjusted according to the light sensation data.
2. the method as described in claim 1, which is characterized in that the method further includes：
Before reading light sensation data, when it is that backlight automatically adjusts pattern to detect the operating mode of the LCD, to the light
The drive module of sensor sends enable signal, and the drive module to control the optical sensor is started to work.
3. method as claimed in claim 2, which is characterized in that the light sensation data include：Light sensation value；
The method further includes：It is after reading light sensation data and bright in the backlight for adjusting the LCD according to the light sensation data
Before degree,
When the light sensation value read is more last reads the variation of light sensation value beyond preset value, just according to the light sensation data tune
Save the backlight illumination of the LCD.
4. the method as described in claim 1, which is characterized in that the backlight for adjusting the LCD according to the light sensation data
Brightness includes：
The mapping table of light sensation value and backlight value is obtained from the configuration file of the LCD；
Backlight illumination corresponding with the light sensation value in the light sensation data is searched in the mapping table of the light sensation value and backlight value；
Based on the backlight illumination found out, the backlight illumination of the LCD is adjusted.
5. the method as described in claim 1, which is characterized in that the sensitivity speck of the optical sensor is uniformly distributed in the LCD
Glass screen on, the sensitivity speck at least two.
6. a kind of LCD backlight regulating device, which is characterized in that the module of the LCD includes optical sensor, the drive of the LCD
Dynamic model block includes the drive module of the optical sensor, i.e. LCD shares a drive module with the optical sensor, so that
The drive module of LCD directly acquires the optical sensor and detects light sensation data；
Acquisition module, for reading light sensation data from the drive module of the LCD；
First adjustment module, the backlight illumination for adjusting the LCD according to the light sensation data.
7. device as claimed in claim 6, which is characterized in that described device further includes：
Detection module is used for before reading light sensation data, when the operating mode for detecting the LCD automatically adjusts mould for backlight
When formula, enable signal is sent to the drive module of the optical sensor, the drive module to control the optical sensor starts work
Make.
8. device as claimed in claim 7, which is characterized in that the light sensation data include：Light sensation value；
Described device further includes：
Second adjustment module, for after reading light sensation data and in the backlight for adjusting the LCD according to the light sensation data
Before brightness,
When the light sensation value read is more last reads the variation of light sensation value beyond preset value, just according to the light sensation data tune
Save the backlight illumination of the LCD.
9. device as claimed in claim 6, which is characterized in that first adjustment module is specifically used for, from matching for the LCD
Set the mapping table that light sensation value and backlight value are obtained in file；
Backlight illumination corresponding with the light sensation value in the light sensation data is searched in the mapping table of the light sensation value and backlight value；
Based on the backlight illumination found out, the backlight illumination of the LCD is adjusted.
10. device as claimed in claim 6, which is characterized in that the sensitivity speck of the optical sensor is uniformly distributed in the LCD
Glass screen on, the sensitivity speck at least two.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410351116.XA CN105321480B (en) | 2014-07-22 | 2014-07-22 | A kind of LCD backlight adjusting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410351116.XA CN105321480B (en) | 2014-07-22 | 2014-07-22 | A kind of LCD backlight adjusting method and device |
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| Publication Number | Publication Date |
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| CN105321480A CN105321480A (en) | 2016-02-10 |
| CN105321480B true CN105321480B (en) | 2018-07-27 |
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| CN201410351116.XA Active CN105321480B (en) | 2014-07-22 | 2014-07-22 | A kind of LCD backlight adjusting method and device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109300438B (en) * | 2018-11-12 | 2020-07-10 | 青岛海信移动通信技术股份有限公司 | Method and equipment for adjusting screen brightness |
| CN109801601B (en) | 2019-03-21 | 2020-11-03 | 京东方科技集团股份有限公司 | Backlight driving method, control circuit and display device |
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| CN101404148A (en) * | 2008-11-11 | 2009-04-08 | 宇龙计算机通信科技(深圳)有限公司 | Method for regulating terminal screen display effect and terminal unit |
| CN101789230A (en) * | 2009-01-24 | 2010-07-28 | 联想(北京)有限公司 | Electronic equipment and display device screen brightness adjusting method thereof |
| CN102376265A (en) * | 2010-07-26 | 2012-03-14 | 苹果公司 | Display brightness control temporal response |
| CN103117044A (en) * | 2013-01-07 | 2013-05-22 | 华为终端有限公司 | Terminal backlight brightness adjusting method and terminal backlight brightness adjusting device and terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100810514B1 (en) * | 2003-10-28 | 2008-03-07 | 삼성전자주식회사 | Display apparatus and control method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404148A (en) * | 2008-11-11 | 2009-04-08 | 宇龙计算机通信科技(深圳)有限公司 | Method for regulating terminal screen display effect and terminal unit |
| CN101789230A (en) * | 2009-01-24 | 2010-07-28 | 联想(北京)有限公司 | Electronic equipment and display device screen brightness adjusting method thereof |
| CN102376265A (en) * | 2010-07-26 | 2012-03-14 | 苹果公司 | Display brightness control temporal response |
| CN103117044A (en) * | 2013-01-07 | 2013-05-22 | 华为终端有限公司 | Terminal backlight brightness adjusting method and terminal backlight brightness adjusting device and terminal |
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