WO2016187998A1 - 动态调整背光方法及装置 - Google Patents

动态调整背光方法及装置 Download PDF

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Publication number
WO2016187998A1
WO2016187998A1 PCT/CN2015/090241 CN2015090241W WO2016187998A1 WO 2016187998 A1 WO2016187998 A1 WO 2016187998A1 CN 2015090241 W CN2015090241 W CN 2015090241W WO 2016187998 A1 WO2016187998 A1 WO 2016187998A1
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WO
WIPO (PCT)
Prior art keywords
backlight
parameter
terminal
dynamic
display screen
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PCT/CN2015/090241
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English (en)
French (fr)
Inventor
黄高波
林舜大
Original Assignee
深圳Tcl数字技术有限公司
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Publication of WO2016187998A1 publication Critical patent/WO2016187998A1/zh

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Classifications

    • 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
    • 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
    • G09G3/36—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 using liquid crystals

Definitions

  • the present invention relates to liquid crystal display technology, and more particularly to a method and apparatus for dynamically adjusting backlight.
  • the dynamic backlight of the TV is generally controlled by PWM (Pulse Width) Modulation, pulse width modulation)
  • PWM Pulse Width Modulation, pulse width modulation
  • the duty cycle of the pin to control the voltage of the display to control the brightness and darkness of the TV backlight.
  • Different TV manufacturers have different design algorithms for dynamic backlighting.
  • the entire dynamic backlight algorithm is driven by the scheme vendor, using the PWM initial configuration parameters consistent with the driver.
  • the dynamic backlight algorithm exists in the scheme driver to ensure the dynamic backlight function required by the product.
  • this method is too tightly combined with the specific scheme driver, which makes the transplantation difficult, and each time in different schemes. Take a long time.
  • the main object of the present invention is to provide a method and apparatus for dynamically adjusting backlights.
  • the dynamic backlight algorithm is separately designed from a specific scheme driver, and the technical defects of the backlight mutation are easily caused during the booting process.
  • the present invention provides a method for dynamically adjusting a backlight, the method comprising:
  • the default backlight parameter is read from the data block, and a control signal is output according to the default backlight parameter to illuminate the display screen of the terminal;
  • the dynamic backlight initial value of the terminal is read from the screen parameter configuration file, and the dynamic backlight parameter is generated according to the dynamic backlight initial value; the dynamic backlight initial value is related to the default backlight parameter;
  • a control signal is output according to the generated dynamic backlight parameter to adjust a backlight of a display screen of the terminal.
  • the method further includes:
  • the dynamic backlight initial value is generated when a synchronous operation instruction is received.
  • the step of generating a dynamic backlight initial value when receiving the synchronous operation instruction comprises:
  • the generated dynamic backlight initial value is saved in the screen parameter configuration file.
  • the dynamic backlight initial value is calculated by the following formula:
  • A (duty-duty_min)*255/(duty_max -duty_min);
  • duty represents the default backlight parameter
  • duty_min represents the minimum backlight parameter
  • duty_max represents the maximum backlight parameter
  • the method further includes:
  • the present invention further provides a dynamic adjustment backlight device, the device comprising:
  • the reading module is configured to read the default backlight parameter from the data block in the boot phase after the terminal is booted up, and to read the dynamic backlight initial value of the terminal from the screen parameter configuration file after the system kernel is started. ;
  • a PWM voltage conversion control module configured to output a control signal according to the default backlight parameter to illuminate a display screen of the terminal during the boot phase
  • a backlight driving interface module configured to generate a dynamic backlight parameter according to the dynamic backlight initial value; the dynamic backlight initial value is related to the default backlight parameter;
  • the PWM voltage conversion control module is further configured to output a control signal according to the generated dynamic backlight parameter to adjust a backlight of a display screen of the terminal.
  • the device further comprises a dynamic backlight initial value generating module, configured to generate a dynamic backlight initial value upon receiving the synchronous operation instruction.
  • a dynamic backlight initial value generating module configured to generate a dynamic backlight initial value upon receiving the synchronous operation instruction.
  • the dynamic backlight initial value generating module comprises:
  • a reading unit configured to read a default backlight parameter, a minimum backlight parameter, and a maximum backlight parameter from the screen file when receiving the synchronous operation instruction
  • a generating unit configured to generate a dynamic backlight initial value of the terminal according to the read default backlight parameter, a minimum backlight parameter, and a maximum backlight parameter;
  • a saving unit configured to save the calculated dynamic backlight initial value in a screen parameter configuration file.
  • the dynamic backlight initial value is calculated by the following formula:
  • A (duty-duty_min)*255/(duty_max -duty_min);
  • duty represents the default backlight parameter
  • duty_min represents the minimum backlight parameter
  • duty_max represents the maximum backlight parameter
  • the device further comprises:
  • a detecting module configured to: after the PWM voltage conversion control module outputs a control signal according to the generated dynamic backlight parameter to illuminate a display screen of the terminal, detecting brightness information of the display screen of the terminal;
  • a determining module configured to determine a corresponding backlight parameter according to the detected brightness information
  • the adjustment module is configured to adjust the brightness of the display screen of the terminal according to the determined backlight parameter.
  • the embodiment of the invention provides a method and a device for dynamically adjusting the backlight.
  • the default backlight parameter is read from the data block, and a control signal is output according to the default backlight parameter to illuminate the display screen of the terminal;
  • the system kernel is started, the dynamic backlight initial value of the terminal is read from the screen parameter configuration file, and a dynamic backlight parameter is generated according to the dynamic backlight initial value; the dynamic backlight initial value is related to the default backlight parameter;
  • the generated dynamic backlight parameter outputs a control signal to adjust the backlight of the display screen of the terminal; the generated dynamic backlight parameter is close to the default backlight parameter, so when the control signal is output according to the generated dynamic backlight parameter to illuminate the display screen of the terminal It can prevent the backlight of the terminal from being suddenly changed.
  • FIG. 1 is a schematic flow chart of a first embodiment of a method for dynamically adjusting backlight according to the present invention
  • FIG. 2 is a schematic flow chart of a second embodiment of a method for dynamically adjusting backlight according to the present invention
  • FIG. 3 is a schematic flow chart of a third embodiment of a method for dynamically adjusting backlight according to the present invention.
  • FIG. 4 is a schematic structural view of a first embodiment of a dynamic adjustment backlight device according to the present invention.
  • FIG. 5 is a detailed structural diagram of the dynamic backlight initial value generating module of FIG. 4; FIG.
  • FIG. 6 is a schematic structural view of a second embodiment of a dynamic adjustment backlight device according to the present invention.
  • the present invention provides a method for dynamically adjusting backlights.
  • the method for dynamically adjusting backlights includes:
  • the default backlight parameter is read from the data block, and a control signal is output according to the default backlight parameter to illuminate the display screen of the terminal.
  • the terminal is a liquid crystal television or a liquid crystal display.
  • the terminal is a liquid crystal television as an example.
  • the LCD TV includes some commonly used modules, such as a power-on module, which is responsible for the power switch of the TV set, including PVR in standby mode (Personal video) Recorder, personal video recording) burn start, program scheduled viewing, BGM (Background Music, background music) upgrade, user remote boot, etc. booting is controlled by this power-on module.
  • a power-on module responsible for the power switch of the TV set, including PVR in standby mode (Personal video) Recorder, personal video recording) burn start, program scheduled viewing, BGM (Background Music, background music) upgrade, user remote boot, etc. booting is controlled by this power-on module.
  • the power-on module powers up the LCD TV main chipset, the LCD TV system starts to boot.
  • the LCD TV starts, after some basic DRIVER, IO, interrupt, etc. are initialized, it enters the boot stage.
  • the default backlight parameter is read from the data block, and a control signal is output according to the default backlight parameter to illuminate the display screen of the terminal. Specifically, the timing of the screen is also read from the data block.
  • the step of outputting the control signal according to the default backlight parameter to illuminate the display screen of the terminal includes: transmitting the default backlight parameter to the PWM voltage conversion control module, and the PWM voltage conversion control module outputs a control signal to the backlight according to the default backlight parameter. To illuminate the display of the LCD TV.
  • the default backlight parameters can only be read from the data block.
  • the default backlight parameters are strongly related to the application platform. This value varies widely, that is, the default backlight parameters used in different application platforms are different. In one embodiment, the default backlight parameter is 35,000. This data block is saved in the FLASH partition.
  • the dynamic backlight initial value of the terminal is read from the screen parameter configuration file, and the dynamic backlight parameter is generated according to the dynamic backlight initial value; the dynamic backlight initial value is related to the default backlight parameter.
  • the system kernel starts to be started.
  • the dynamic backlight initial value of the terminal is read from the screen parameter configuration file.
  • the screen parameter configuration file can be a model.ini configuration file.
  • the screen parameter configuration file is stored in the FLASH partition.
  • the step of generating a dynamic backlight parameter according to the dynamic backlight initial value includes: reading a maximum backlight parameter and a minimum backlight parameter from the screen reference file, and generating a dynamic backlight parameter according to the dynamic backlight initial value, the maximum backlight parameter, and the minimum backlight parameter,
  • the dynamic backlight parameter B is calculated by the following formula:
  • B dynamic backlight initial value * (maximum backlight parameter - minimum backlight parameter) / 255 + minimum backlight parameter.
  • the read dynamic backlight initial value is 159
  • the maximum backlight parameter is 50000
  • the minimum backlight parameter is 10000
  • the calculated dynamic backlight parameter is 34941.
  • the dynamic backlight parameter 34941 obtained by this calculation is close to the default backlight parameter 35000 read during the boot phase.
  • the dynamic backlight initial value is related to the default backlight parameter, and the dynamic backlight initial value is calculated according to the default backlight parameter.
  • the data in the data block is derived from the screen file.
  • the generated dynamic backlight parameter is close to the default backlight parameter. Therefore, when the control signal is output according to the generated dynamic backlight parameter to adjust the backlight of the display screen of the terminal, the backlight of the terminal can be prevented from being suddenly changed.
  • the step of outputting the control signal according to the generated dynamic backlight parameter to adjust the backlight of the display screen of the terminal includes: transmitting the dynamic backlight parameter to the PWM voltage conversion control module, and the PWM voltage conversion control module outputs a control signal according to the dynamic backlight parameter A backlight to adjust the backlight of the LCD TV's display.
  • FIG. 2 is a second embodiment of a method for dynamically adjusting backlight according to the present invention.
  • the method further includes:
  • This synchronous operation instruction can be generated by executing a default reset operation of the factory menu.
  • the relevant data is read from the screen file of the ini/txt format of the terminal, and a dynamic backlight initial value is generated.
  • the screen file is saved in the FLASH partition.
  • the step includes:
  • the default backlight parameter, the minimum backlight parameter and the maximum backlight parameter are pre-stored in the screen file, and the default backlight parameter, the minimum backlight parameter and the maximum backlight parameter are provided in advance by the solution provider.
  • the default backlight parameters in the data block are also derived from the screen file.
  • the dynamic backlight initial value of the terminal is generated according to the read default backlight parameter, the minimum backlight parameter and the maximum backlight parameter, and the dynamic backlight initial value and the boot phase of the terminal are implemented after the terminal is started in the system kernel.
  • the default backlight parameters of the display of the illuminated terminal are synchronized to prevent sudden changes in the backlight.
  • the dynamic backlight initial value is calculated by the following formula:
  • A (duty-duty_min)*255/(duty_max -duty_min);
  • duty represents the default backlight parameter
  • duty_min represents the minimum backlight parameter
  • duty_max represents the maximum backlight parameter
  • the dynamic backlight initial value is in a backlight range (such as 0-255, wherein 0 corresponds to the darkest backlight, and 255 corresponds to the brightest backlight). For example, when the default backlight parameter is 35000, the maximum backlight parameter is 50000, When the minimum backlight parameter is 10000, the calculated dynamic backlight initial value is 159.
  • the screen parameter configuration file can be a model.ini configuration file. After the system kernel is started, the screen parameter configuration file can be accessed.
  • FIG. 3 is a third embodiment of a method for dynamically adjusting backlight according to the present invention.
  • the method further includes:
  • the brightness information of the display screen of the terminal is detected in real time to perform dynamic backlight adjustment on the display screen of the terminal.
  • the backlight parameter corresponding to the detected brightness information may be calculated by using a dynamic backlight algorithm.
  • the step includes: determining the detected brightness information according to a preset mapping table of the brightness information and the backlight parameter. Corresponding backlight parameters.
  • the brightness of the display screen of the terminal is adjusted according to the backlight parameter determined in step S60.
  • the determined backlight parameter is sent to the PWM voltage conversion control module, and the PWM voltage conversion control module outputs the control according to the determined backlight parameter.
  • the signal is given to the backlight to adjust the brightness of the display of the terminal.
  • FIG. 4 is a first embodiment of a dynamic adjustment backlight device according to the present invention.
  • the device includes:
  • the reading module 10 is configured to read the default backlight parameter from the data block in the boot phase after the terminal is booted, and to read the dynamic backlight of the terminal from the screen parameter configuration file after the system kernel is started. value;
  • the PWM voltage conversion control module 30 is configured to output a control signal according to the default backlight parameter to illuminate a display screen of the terminal during the boot phase;
  • the backlight driving interface module 20 is configured to generate a dynamic backlight parameter according to the dynamic backlight initial value; the dynamic backlight initial value is related to the default backlight parameter;
  • the PWM voltage conversion control module 30 is further configured to output a control signal according to the generated dynamic backlight parameter to adjust a backlight of a display screen of the terminal.
  • the terminal is a liquid crystal television or a liquid crystal display.
  • the terminal is a liquid crystal television as an example.
  • the LCD TV includes some commonly used modules, such as a power-on module, which is responsible for the power switch of the TV set, including PVR in standby mode (Personal video) Recorder, personal video recording) burn start, program scheduled viewing, BGM (Background Music, background music) upgrade, user remote boot, etc. booting is controlled by this power-on module.
  • a power-on module responsible for the power switch of the TV set, including PVR in standby mode (Personal video) Recorder, personal video recording) burn start, program scheduled viewing, BGM (Background Music, background music) upgrade, user remote boot, etc. booting is controlled by this power-on module.
  • the power-on module powers up the LCD TV main chipset, the LCD TV system starts to boot.
  • the LCD TV starts, after some basic DRIVER, IO, interrupt, etc. are initialized, it enters the boot stage.
  • the read module 10 reads the default backlight parameters from the data block, and in particular, reads the timing of the screen from the data block.
  • the read module 10 can only read the default backlight parameter from the data block.
  • the default backlight parameter is strongly related to the application platform, and the value varies widely, that is, the default is used in different application platforms.
  • the backlight parameters are different. In one embodiment, the default backlight parameter is 35,000.
  • the PWM voltage conversion control module 30 outputs a control signal according to the default backlight parameter to illuminate the display screen of the terminal by: the PWM voltage conversion control module 30 outputs a control signal to the backlight according to the default backlight parameter to illuminate the backlight LCD TV display.
  • the system kernel starts to be started.
  • the read module 10 reads the dynamic backlight initial value of the terminal from the screen parameter configuration file.
  • the screen parameter configuration file can be a model.ini configuration file.
  • the screen parameter configuration file is stored in the FLASH partition.
  • the step of the backlight driving interface module 20 generating the dynamic backlight parameter according to the dynamic backlight initial value comprises: reading the maximum backlight parameter and the minimum backlight parameter from the screen parameter file, and according to the dynamic backlight initial value, the maximum backlight parameter, and the minimum backlight parameter
  • a dynamic backlight parameter is generated, which is calculated by the following formula:
  • B dynamic backlight initial value * (maximum backlight parameter - minimum backlight parameter) / 255 + minimum backlight parameter.
  • the read dynamic backlight initial value is 159
  • the maximum backlight parameter is 50000
  • the minimum backlight parameter is 10000
  • the calculated dynamic backlight parameter is 34941.
  • the dynamic backlight parameter 34941 obtained by this calculation is close to the default backlight parameter 35000 read during the boot phase.
  • the dynamic backlight initial value is related to the default backlight parameter, and the dynamic backlight initial value is calculated according to the default backlight parameter.
  • the data in the data block is derived from the screen file.
  • the generated dynamic backlight parameter is close to the default backlight parameter, so the PWM voltage conversion control module 30 outputs a control signal according to the generated dynamic backlight parameter to adjust the backlight of the display screen of the terminal, thereby preventing the backlight of the terminal from being suddenly changed. .
  • the device further includes a dynamic backlight initial value generating module 40, configured to generate a dynamic backlight initial value when receiving the synchronous operation instruction.
  • This synchronous operation instruction can be generated by executing a default reset operation of the factory menu.
  • the relevant data is read from the screen file of the ini/txt format of the terminal, and a dynamic backlight initial value is generated.
  • the screen file is saved in the FLASH partition.
  • the dynamic backlight initial value generating module 40 includes:
  • the reading unit 41 is configured to read a default backlight parameter, a minimum backlight parameter, and a maximum backlight parameter from the screen file when receiving the synchronous operation instruction;
  • the generating unit 42 is configured to generate a dynamic backlight initial value of the terminal according to the read default backlight parameter, the minimum backlight parameter, and the maximum backlight parameter;
  • the saving unit 43 is configured to save the calculated dynamic backlight initial value in the screen parameter configuration file.
  • the default backlight parameter, the minimum backlight parameter and the maximum backlight parameter are pre-stored in the screen file, and the default backlight parameter, the minimum backlight parameter and the maximum backlight parameter are provided in advance by the solution provider.
  • the default backlight parameters in the data block are also derived from the screen file.
  • the generating unit generates a dynamic backlight initial value of the terminal according to the read default backlight parameter, the minimum backlight parameter and the maximum backlight parameter, so that the dynamic backlight initial value and the boot phase of the terminal are illuminated after the terminal is started in the system kernel.
  • the default backlight parameters of the terminal's display are synchronized to prevent backlight abrupt changes.
  • the dynamic backlight initial value is calculated by the following formula:
  • A (duty-duty_min)*255/(duty_max -duty_min);
  • duty represents the default backlight parameter
  • duty_min represents the minimum backlight parameter
  • duty_max represents the maximum backlight parameter
  • the dynamic backlight initial value is in a backlight range (such as 0-255, where 0 corresponds to the darkest backlight and 255 corresponds to the brightest backlight). If the default backlight parameter is 35000, the maximum backlight parameter is 50000, the minimum When the backlight parameter is 10000, the calculated dynamic backlight initial value is 159.
  • the screen parameter configuration file can be a model.ini configuration file. After the system kernel is started, the screen parameter configuration file can be accessed.
  • FIG. 6 is a second embodiment of a dynamic adjustment backlight device of the present invention.
  • the device further includes:
  • the detecting module 50 is configured to: after the PWM voltage conversion control module 30 outputs a control signal according to the generated dynamic backlight parameter to illuminate the display screen of the terminal, detecting brightness information of the display screen of the terminal;
  • a determining module 60 configured to determine a corresponding backlight parameter according to the detected brightness information
  • the adjusting module 70 is configured to adjust the brightness of the display screen of the terminal according to the determined backlight parameter.
  • the detection module 50 After the display screen of the terminal is illuminated according to the dynamic backlight parameter output control signal, the detection module 50 detects the brightness information of the display screen of the terminal in real time to perform dynamic backlight adjustment on the display screen of the terminal.
  • the determining module 60 can calculate the backlight parameter corresponding to the detected brightness information by using a dynamic backlight algorithm.
  • the backlight parameter corresponding to the detected brightness information can be determined by: according to the preset brightness information and the backlight parameter.
  • the mapping table determines the backlight parameter corresponding to the detected brightness information.
  • the adjusting module 70 adjusts the brightness of the display screen of the terminal according to the backlight parameter determined by the determining unit. Specifically, the determined backlight parameter outputs a control signal to the backlight to adjust the brightness of the display screen of the terminal.
  • the PWM voltage conversion control module 30 outputs a control signal according to the generated dynamic backlight parameter to illuminate the display screen of the terminal, the brightness information of the display screen of the terminal is continuously detected, and the brightness information is determined according to the brightness information.
  • the brightness of the display screen of the terminal is adjusted, the brightness of the display screen of the terminal can be dynamically adjusted in real time, the power consumption of the terminal is reduced, resource waste is reduced, and the display effect of the display screen of the terminal is made. better.

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Abstract

提供了一种动态调整背光方法和装置。该方法包括：终端开机启动后，在boot阶段，从数据块中读取默认背光参数，并根据该默认背光参数输出控制信号以点亮终端的显示屏（S10）；在系统内核启动完成后，从屏参数配置文件中读取终端的动态背光初值，并根据该动态背光初值生成动态背光参数；该动态背光初值与该默认背光参数相关（S20）；根据该生成的动态背光参数输出控制信号以调整终端的显示屏的背光（S30）。采用本方法可防止终端在开机过程中出现背光突变。

Description

动态调整背光方法及装置
技术领域
本发明涉及液晶显示技术，尤其涉及动态调整背光方法及装置。
背景技术
随着科学技术的不断进步，液晶显示装置的背光技术不断得到发展。但是不管是LCD液晶电视，还是LED液晶电视，显示屏对电能的消耗都占去了液晶电视整机能耗中的绝大部分。为了响应全球范围内的绿色节能减排号召，也为通过电视行业节能认证，同时还要保证消费者良好的观看效果，各电视厂商普遍采用了动态背光的设计思想。
电视的动态背光，一般都是通过控制PWM（Pulse Width Modulation，脉冲宽度调制）引脚的占空比，来控制显示屏的电压，从而控制电视背光的明与暗。不同的电视厂商，动态背光都有不同的设计算法。对于采用方案商提供的整机解决方案的电视厂商，整个动态背光的算法都在方案商的驱动中，使用与驱动一致的PWM初始配置参数。这样动态背光算法存在于方案商驱动中的方法也能保证产品所需的动态背光功能，但这种方法因为与具体不同的方案驱动结合太紧密，导致移植困难，每次在不同方案上都要花较长时间。
现有技术中，已经出现了将动态背光的算法与具体方案的驱动完全分开设计。但这又出现了一个新的问题，那就是方案商的BOOT软件在开机显示LOGO时，先设置了显示屏的背光，而电视厂商的中间件软件在运行动态背光算法时，使用的初始背光值与BOOT所设的背光值不相同，从而导致开机过程中显示屏的背光会出现一次突变。
上述内容仅用于辅助理解本发明的技术方案，并不代表承认上述内容是现有技术。
发明内容
本发明的主要目的在于提供一种动态调整背光方法及装置，旨在解决的现有技术中，将动态背光算法与具体方案商驱动分开设计，在开机过程中，容易导致背光突变的技术缺陷。
为实现上述目的，本发明提供一种动态调整背光方法，该方法包括：
终端开机启动后，在boot阶段，从数据块中读取默认背光参数，并根据该默认背光参数输出控制信号以点亮终端的显示屏；
在系统内核启动完成后，从屏参数配置文件中读取终端的动态背光初值，并根据该动态背光初值生成动态背光参数；所述动态背光初值与所述默认背光参数相关；
根据所述生成的动态背光参数输出控制信号以调整终端的显示屏的背光。
优选地，所述终端开机启动后，在boot阶段，从数据块中读取默认背光参数，并根据该默认背光参数输出控制信号以点亮终端的显示屏的步骤之前，该方法还包括：
在接收到同步操作指令时，生成动态背光初值。
优选地，所述在接收到同步操作指令时，生成动态背光初值的步骤包括：
在接收到同步操作指令时，从屏参文件中读取默认背光参数、最小背光参数和最大背光参数；
根据所述读取的默认背光参数、最小背光参数和最大背光参数生成所述终端的动态背光初值；
将所述生成的动态背光初值保存在屏参数配置文件中。
优选地，所述动态背光初值通过以下公式计算：
A=（duty-duty_min）*255/（duty_max -duty_min）；
其中，A表示动态背光初值，duty表示默认背光参数，duty_min表示最小背光参数，duty_max表示最大背光参数。
优选地，所述根据所述生成的动态背光参数输出控制信号以调整终端的显示屏的背光的步骤之后，该方法还包括：
检测所述终端的显示画面的亮度信息；
根据该检测的亮度信息确定对应的背光参数；
根据该确定的背光参数调整终端的显示屏亮度。
此外，为实现上述目的，本发明还提供一种动态调整背光装置，该装置包括：
读取模块，用于在终端开机启动后，在boot阶段，从数据块中读取默认背光参数，及用于在系统内核启动完成后，从屏参数配置文件中读取终端的动态背光初值；
PWM电压转换控制模块，用于在该boot阶段，根据该默认背光参数输出控制信号以点亮终端的显示屏；
背光驱动接口模块，用于根据该动态背光初值生成动态背光参数；所述动态背光初值与所述默认背光参数相关；
所述PWM电压转换控制模块，还用于根据所述生成的动态背光参数输出控制信号以调整终端的显示屏的背光。
优选地，所述装置还包括动态背光初值生成模块，用于在接收到同步操作指令时，生成动态背光初值。
优选地，所述动态背光初值生成模块包括：
读取单元，用于在接收到同步操作指令时，从屏参文件中读取默认背光参数、最小背光参数和最大背光参数；
生成单元，用于根据所述读取的默认背光参数、最小背光参数和最大背光参数生成所述终端的动态背光初值；
保存单元，用于将所述计算的动态背光初值保存在屏参数配置文件中。
优选地，所述动态背光初值通过以下公式计算：
A=（duty-duty_min）*255/（duty_max -duty_min）；
其中，A表示动态背光初值，duty表示默认背光参数，duty_min表示最小背光参数，duty_max表示最大背光参数。
优选地，所述装置还包括：
检测模块，用于在PWM电压转换控制模块根据该所述生成的动态背光参数输出控制信号以点亮终端的显示屏后，检测所述终端的显示画面的亮度信息；
确定模块，用于根据该检测的亮度信息确定对应的背光参数；
调整模块，用于根据该确定的背光参数调整终端的显示屏亮度。
本发明实施例提出了动态调整背光方法及装置，通过终端开机启动后，在boot阶段，从数据块中读取默认背光参数，并根据该默认背光参数输出控制信号以点亮终端的显示屏；在系统内核启动完成后，从屏参数配置文件中读取终端的动态背光初值，并根据该动态背光初值生成动态背光参数；所述动态背光初值与所述默认背光参数相关；根据所述生成的动态背光参数输出控制信号以调整终端的显示屏的背光；该生成的动态背光参数与默认背光参数接近，因此在根据该生成的动态背光参数输出控制信号以点亮终端的显示屏时，可防止该终端的显示屏出现背光突变。
附图说明
图1为本发明动态调整背光方法的第一实施例的流程示意图；
图2为本发明动态调整背光方法的第二实施例的流程示意图；
图3为本发明动态调整背光方法的第三实施例的流程示意图；
图4为本发明动态调整背光装置的第一实施例的结构示意图；
图5为图4中动态背光初值生成模块的详细结构示意图；
图6为本发明动态调整背光装置的第二实施例的结构示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明提供一种动态调整背光方法，参照图1，在一实施例中，该动态调整背光方法包括：
S10、终端开机启动后，在boot阶段，从数据块中读取默认背光参数，并根据该默认背光参数输出控制信号以点亮终端的显示屏。
该终端是液晶电视，也可以是液晶显示器。在本实施例中，以该终端是液晶电视为例。
该液晶电视包括一些常用的模块，如包括一个上电模块，该上电模块负责电视整机的电源的开关，包括待机模式下的PVR（Personal video recorder，个人视频录像）刻录启动、节目预定观看、BGM（Background music，背景音乐）升级、用户遥控开机等开机启动都由这个上电模块控制。上电模块给液晶电视主芯片组上电后，液晶电视系统开始启动，液晶电视电视启动后，经过一些基本的DRIVER、IO、中断等初始化后，进入到boot阶段。
在boot阶段，从数据块中读取默认背光参数，并根据该默认背光参数输出控制信号以点亮终端的显示屏，具体的，还从该数据块中读取屏的时序。根据该默认背光参数输出控制信号以点亮终端的显示屏的步骤包括：将该默认背光参数传送给给PWM电压转换控制模块，该PWM电压转换控制模块根据该默认背光参数输出控制信号给背光灯，以点亮该液晶电视的显示屏。
由于在boot阶段时，系统文件还未初始化，因为在boot阶段不能访问文件。因此在boot阶段，只能从数据块中读取默认背光参数，该默认背光参数与应用平台强相关，这个值的变化范围很大，即在不同的应用平台，使用的默认背光参数不一样，在一个实施例中，该默认背光参数为35000。该数据块保存在FLASH分区中。
S20、在系统内核启动完成后，从屏参数配置文件中读取终端的动态背光初值，并根据该动态背光初值生成动态背光参数；该动态背光初值与该默认背光参数相关。
boot阶段完成后，系统内核开始启动，系统内核启动完成后，从屏参数配置文件中读取终端的动态背光初值。该屏参数配置文件可以为model.ini配置文件。该屏参数配置文件存储在FLASH分区中。
根据该动态背光初值生成动态背光参数的步骤包括：从屏参文件中读取最大背光参数和最小背光参数，并根据该动态背光初值、最大背光参数和最小背光参数生成动态背光参数，该动态背光参数B通过以下公式计算获得：
B＝动态背光初值*（最大背光参数－最小背光参数）/255 + 最小背光参数。
在一个实施例中，该读取的动态背光初值为159，该最大背光参数为50000，该最小背光参数为10000，计算获得的动态背光参数为34941。该计算获得的动态背光参数34941与在boot阶段读取的默认背光参数35000接近。
该动态背光初值与该默认背光参数相关，该动态背光初值根据该默认背光参数计算得到。
数据块中的数据来源于该屏参文件。
S30、根据该生成的动态背光参数输出控制信号以调整终端的显示屏的背光。
该生成的动态背光参数与默认背光参数接近，因此在根据该生成的动态背光参数输出控制信号以调整终端的显示屏的背光，可防止该终端的显示屏出现背光突变。
根据该生成的动态背光参数输出控制信号以调整终端的显示屏的背光的步骤包括：将该动态背光参数发送给PWM电压转换控制模块，该PWM电压转换控制模块根据该动态背光参数输出控制信号给背光灯，以调整该液晶电视的显示屏的背光。
参照图2，图2为本发明动态调整背光方法的第二实施例。
基于上述动态调整背光方法的第一实施例，在步骤S10之前，该方法还包括：
S40、在接收到同步操作指令时，生成动态背光初值。
该同步操作指令可以通过执行工厂菜单的默认复位操作产生。在该步骤中，在接收到同步操作指令时，从终端的ini/txt格式的屏参文件中读取相关数据，生成动态背光初值。该屏参文件保存在FLASH分区中。
在一实施例中，该步骤包括：
S31、在接收到同步操作指令时，从屏参文件中读取默认背光参数、最小背光参数和最大背光参数。
该屏参文件中预先存储了默认背光参数、最小背光参数和最大背光参数，该默认背光参数、最小背光参数和最大背光参数由方案商预先提供。数据块中的默认背光参数也是来源于该屏参文件中。
S32、根据该读取的默认背光参数、最小背光参数和最大背光参数生成该终端的动态背光初值。
在该步骤中，根据该读取的默认背光参数、最小背光参数和最大背光参数生成该终端的动态背光初值，实现在将终端在系统内核启动完成后，终端的动态背光初值与boot阶段点亮终端的显示屏的默认背光参数同步，防止背光突变。
在一实施例中，该动态背光初值通过以下公式计算：
A=（duty-duty_min）*255/（duty_max -duty_min）；
其中，A表示动态背光初值，duty表示默认背光参数，duty_min表示最小背光参数，duty_max表示最大背光参数。
该动态背光初值在一个背光范围内（如0-255，其中，0对应最暗的背光，255对应最亮的背光），如当该默认背光参数为35000，该最大背光参数为50000，该最小背光参数为10000时，计算得到的动态背光初值为159。
S33、将该生成的动态背光初值保存在屏参数配置文件中。
该屏参数配置文件可以为model.ini配置文件，在系统内核启动完成后，可访问该屏参数配置文件。
参照图3，图3为本发明动态调整背光方法的第三实施例。
基于上述动态调整背光方法的第一实施例，在步骤S30之后，该方法还包括：
S50、检测该终端的显示画面的亮度信息。
在对终端的显示屏根据动态背光参数输出控制信号点亮后，实时检测该终端的显示画面的亮度信息，以对该终端的显示屏进行动态背光调整。
S60、根据该检测的亮度信息确定对应的背光参数。
在该步骤中，可通过动态背光算法计算该检测的亮度信息对应的背光参数，在一实施例中，该步骤包括：根据预设的亮度信息与背光参数的映射表，确定该检测的亮度信息对应的背光参数。
S70、根据该确定的背光参数调整终端的显示屏亮度。
在该步骤中，根据步骤S60确定的背光参数调整终端的显示屏亮度，具体的，将该确定的背光参数发送给PWM电压转换控制模块，该PWM电压转换控制模块根据该确定的背光参数输出控制信号给背光灯，以调整终端的显示屏亮度。
参照图4，图4为本发明动态调整背光装置的第一实施例，该装置包括：
读取模块10，用于在终端开机启动后，在boot阶段，从数据块中读取默认背光参数，及用于在系统内核启动完成后，从屏参数配置文件中读取终端的动态背光初值；
PWM电压转换控制模块30，用于在该boot阶段，根据该默认背光参数输出控制信号以点亮终端的显示屏；
背光驱动接口模块20，用于根据该动态背光初值生成动态背光参数；该动态背光初值与该默认背光参数相关；
该PWM电压转换控制模块30，还用于根据该生成的动态背光参数输出控制信号以调整终端的显示屏的背光。
该终端是液晶电视，也可以是液晶显示器。在本实施例中，以该终端是液晶电视为例。
该液晶电视包括一些常用的模块，如包括一个上电模块，该上电模块负责电视整机的电源的开关，包括待机模式下的PVR（Personal video recorder，个人视频录像）刻录启动、节目预定观看、BGM（Background music，背景音乐）升级、用户遥控开机等开机启动都由这个上电模块控制。上电模块给液晶电视主芯片组上电后，液晶电视系统开始启动，液晶电视电视启动后，经过一些基本的DRIVER、IO、中断等初始化后，进入到boot阶段。
在boot阶段，该读取模块10从数据块中读取默认背光参数，具体的，还从该数据块中读取屏的时序。
由于在boot阶段时，系统文件还未初始化，因为在boot阶段不能访问文件。因此在boot阶段，该读取模块10只能从数据块中读取默认背光参数，该默认背光参数与应用平台强相关，这个值的变化范围很大，即在不同的应用平台，使用的默认背光参数不一样，在一个实施例中，该默认背光参数为35000。
该PWM电压转换控制模块30根据该默认背光参数输出控制信号以点亮终端的显示屏通过以下方式实现：该PWM电压转换控制模块30根据该默认背光参数输出控制信号给背光灯，以点亮该液晶电视的显示屏。
boot阶段完成后，系统内核开始启动，系统内核启动完成后，该读取模块10从屏参数配置文件中读取终端的动态背光初值。该屏参数配置文件可以为model.ini配置文件。该屏参数配置文件存储在FLASH分区中。
该背光驱动接口模块20根据该动态背光初值生成动态背光参数的步骤包括：从屏参文件中读取最大背光参数和最小背光参数，并根据该动态背光初值、最大背光参数和最小背光参数生成动态背光参数，该动态背光参数B通过以下公式计算获得：
B＝动态背光初值*（最大背光参数－最小背光参数）/255 + 最小背光参数。
在一个实施例中，该读取的动态背光初值为159，该最大背光参数为50000，该最小背光参数为10000，计算获得的动态背光参数为34941。该计算获得的动态背光参数34941与在boot阶段读取的默认背光参数35000接近。
该动态背光初值与该默认背光参数相关，该动态背光初值根据该默认背光参数计算得到。
数据块中的数据来源于该屏参文件。
该生成的动态背光参数与默认背光参数接近，因此该PWM电压转换控制模块30在根据该生成的动态背光参数输出控制信号以调整终端的显示屏的背光，可防止该终端的显示屏出现背光突变。
进一步的，该装置还包括动态背光初值生成模块40，用于在接收到同步操作指令时，生成动态背光初值。
该同步操作指令可以通过执行工厂菜单的默认复位操作产生。在该步骤中，在接收到同步操作指令时，从终端的ini/txt格式的屏参文件中读取相关数据，生成动态背光初值。该屏参文件保存在FLASH分区中。
进一步的，如图5所示，该动态背光初值生成模块40包括：
读取单元41，用于在接收到同步操作指令时，从屏参文件中读取默认背光参数、最小背光参数和最大背光参数；
生成单元42，用于根据该读取的默认背光参数、最小背光参数和最大背光参数生成该终端的动态背光初值；
保存单元43，用于将该计算的动态背光初值保存在屏参数配置文件中。
该屏参文件中预先存储了默认背光参数、最小背光参数和最大背光参数，该默认背光参数、最小背光参数和最大背光参数由方案商预先提供。数据块中的默认背光参数也是来源于该屏参文件中。
该生成单元根据该读取的默认背光参数、最小背光参数和最大背光参数生成该终端的动态背光初值，实现在将终端在系统内核启动完成后，终端的动态背光初值与boot阶段点亮终端的显示屏的默认背光参数同步，防止背光突变。
在一实施例中，该动态背光初值通过以下公式计算：
A=（duty-duty_min）*255/（duty_max -duty_min）；
其中，A表示动态背光初值，duty表示默认背光参数，duty_min表示最小背光参数，duty_max表示最大背光参数。
该动态背光初值在一个背光范围内（如0-255，其中，0对应最暗的背光，255对应最亮的背光），如该默认背光参数为35000，该最大背光参数为50000，该最小背光参数为10000时，计算得到的动态背光初值为159。
该屏参数配置文件可以为model.ini配置文件，在系统内核启动完成后，可访问该屏参数配置文件。
参照图6，图6为本发明动态调整背光装置的第二实施例。
基于上述动态调整背光装置的第一实施例，该装置还包括：
检测模块50，用于在PWM电压转换控制模块30根据该该生成的动态背光参数输出控制信号以点亮终端的显示屏后，检测该终端的显示画面的亮度信息；
确定模块60，用于根据该检测的亮度信息确定对应的背光参数；
调整模块70，用于根据该确定的背光参数调整终端的显示屏亮度。
在对终端的显示屏根据动态背光参数输出控制信号点亮后，该检测模块50实时检测该终端的显示画面的亮度信息，以对该终端的显示屏进行动态背光调整。
该确定模块60可通过动态背光算法计算该检测的亮度信息对应的背光参数，在一实施例中，可通过以下方式确定该检测的亮度信息对应的背光参数：根据预设的亮度信息与背光参数的映射表，确定该检测的亮度信息对应的背光参数。
该调整模块70根据该确定单元确定的背光参数调整终端的显示屏亮度，具体的，将该确定的背光参数输出控制信号给背光灯，以调整终端的显示屏亮度。
采用上述实施例，用于在PWM电压转换控制模块30根据该该生成的动态背光参数输出控制信号以点亮终端的显示屏后，继续检测该终端的显示画面的亮度信息，根据该亮度信息确定对应的背光参数，再根据确定的背光参数调整终端的显示屏的亮度，可实时动态的调整终端的显示屏的亮度，降低终端的功耗，减少资源浪费，且使得终端的显示屏的显示效果更好。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (16)

  1. 一种动态调整背光方法，其特征在于，该方法包括：
    终端开机启动后，在boot阶段，从数据块中读取默认背光参数，并根据该默认背光参数输出控制信号以点亮终端的显示屏；
    在系统内核启动完成后，从屏参数配置文件中读取终端的动态背光初值，并根据该动态背光初值生成动态背光参数；所述动态背光初值与所述默认背光参数相关；
    根据所述生成的动态背光参数输出控制信号以调整终端的显示屏的背光。
  2. 如权利要求1所述的动态调整背光方法，其特征在于，所述终端开机启动后，在boot阶段，从数据块中读取默认背光参数，并根据该默认背光参数输出控制信号以点亮终端的显示屏的步骤之前，该方法还包括：
    在接收到同步操作指令时，生成动态背光初值。
  3. 根据权利要求2所述的动态调整背光方法，其特征在于，所述在接收到同步操作指令时，生成动态背光初值的步骤包括：
    在接收到同步操作指令时，从屏参文件中读取默认背光参数、最小背光参数和最大背光参数；
    根据所述读取的默认背光参数、最小背光参数和最大背光参数生成所述终端的动态背光初值；
    将所述生成的动态背光初值保存在屏参数配置文件中。
  4. 如权利要求3所述的动态调整背光方法，其特征在于，所述动态背光初值通过以下公式计算：
    A=（duty-duty_min）*255/（duty_max -duty_min）；
    其中，A表示动态背光初值，duty表示默认背光参数，duty_min表示最小背光参数，duty_max表示最大背光参数。
  5. 如权利要求1所述的动态调整背光方法，其特征在于，所述根据所述生成的动态背光参数输出控制信号以调整终端的显示屏的背光的步骤之后，该方法还包括：
    检测所述终端的显示画面的亮度信息；
    根据该检测的亮度信息确定对应的背光参数；
    根据该确定的背光参数调整终端的显示屏亮度。
  6. 如权利要求2所述的动态调整背光方法，其特征在于，所述根据所述生成的动态背光参数输出控制信号以调整终端的显示屏的背光的步骤之后，该方法还包括：
    检测所述终端的显示画面的亮度信息；
    根据该检测的亮度信息确定对应的背光参数；
    根据该确定的背光参数调整终端的显示屏亮度。
  7. 如权利要求3所述动态调整背光方法，其特征在于，所述根据所述生成的动态背光参数输出控制信号以调整终端的显示屏的背光的步骤之后，该方法还包括：
    检测所述终端的显示画面的亮度信息；
    根据该检测的亮度信息确定对应的背光参数；
    根据该确定的背光参数调整终端的显示屏亮度。
  8. 如权利要求4所述动态调整背光方法，其特征在于，所述根据所述生成的动态背光参数输出控制信号以点亮终端的显示屏的步骤之后，该方法还包括：
    检测所述终端的显示画面的亮度信息；
    根据该检测的亮度信息确定对应的背光参数；
    根据该确定的背光参数调整终端的显示屏亮度。
  9. 一种动态调整背光装置，其特征在于，该装置包括：
    读取模块，用于在终端开机启动后，在boot阶段，从数据块中读取默认背光参数，及用于在系统内核启动完成后，从屏参数配置文件中读取终端的动态背光初值；
    PWM电压转换控制模块，用于在该boot阶段，根据该默认背光参数输出控制信号以点亮终端的显示屏；
    背光驱动接口模块，用于根据该动态背光初值生成动态背光参数；所述动态背光初值与所述默认背光参数相关；
    所述PWM电压转换控制模块，还用于根据所述生成的动态背光参数输出控制信号以调整终端的显示屏的背光。
  10. 如权利要求9所述的动态调整背光装置，其特征在于，所述装置还包括动态背光初值生成模块，用于在接收到同步操作指令时，生成动态背光初值。
  11. 如权利要求10所述的动态调整背光装置，其特征在于，所述动态背光初值生成模块包括：
    读取单元，用于在接收到同步操作指令时，从屏参文件中读取默认背光参数、最小背光参数和最大背光参数；
    生成单元，用于根据所述读取的默认背光参数、最小背光参数和最大背光参数生成所述终端的动态背光初值；
    保存单元，用于将所述计算的动态背光初值保存在屏参数配置文件中。
  12. 如权利要求11所述的动态调整背光装置，其特征在于，所述动态背光初值通过以下公式计算：
    A=（duty-duty_min）*255/（duty_max -duty_min）；
    其中，A表示动态背光初值，duty表示默认背光参数，duty_min表示最小背光参数，duty_max表示最大背光参数。
  13. 如权利要求9所述的动态调整背光装置，其特征在于，所述装置还包括：
    检测模块，用于在PWM电压转换控制模块根据该所述生成的动态背光参数输出控制信号以点亮终端的显示屏后，检测所述终端的显示画面的亮度信息；
    确定模块，用于根据该检测的亮度信息确定对应的背光参数；
    调整模块，用于根据该确定的背光参数调整终端的显示屏亮度。
  14. 如权利要求10所述的动态调整背光装置，其特征在于，所述装置还包括：
    检测模块，用于在PWM电压转换控制模块根据该所述生成的动态背光参数输出控制信号以点亮终端的显示屏后，检测所述终端的显示画面的亮度信息；
    确定模块，用于根据该检测的亮度信息确定对应的背光参数；
    调整模块，用于根据该确定的背光参数调整终端的显示屏亮度。
  15. 如权利要求11所述的动态调整背光装置，其特征在于，所述装置还包括：
    检测模块，用于在PWM电压转换控制模块根据该所述生成的动态背光参数输出控制信号以点亮终端的显示屏后，检测所述终端的显示画面的亮度信息；
    确定模块，用于根据该检测的亮度信息确定对应的背光参数；
    调整模块，用于根据该确定的背光参数调整终端的显示屏亮度。
  16. 如权利要求12所述的动态调整背光装置，其特征在于，所述装置还包括：
    检测模块，用于在PWM电压转换控制模块根据该所述生成的动态背光参数输出控制信号以点亮终端的显示屏后，检测所述终端的显示画面的亮度信息；
    确定模块，用于根据该检测的亮度信息确定对应的背光参数；
    调整模块，用于根据该确定的背光参数调整终端的显示屏亮度。
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