WO2017190426A1 - 用于在线调整液晶面板的伽马编码的系统 - Google Patents

用于在线调整液晶面板的伽马编码的系统 Download PDF

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Publication number
WO2017190426A1
WO2017190426A1 PCT/CN2016/089743 CN2016089743W WO2017190426A1 WO 2017190426 A1 WO2017190426 A1 WO 2017190426A1 CN 2016089743 W CN2016089743 W CN 2016089743W WO 2017190426 A1 WO2017190426 A1 WO 2017190426A1
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WIPO (PCT)
Prior art keywords
gamma
enable signal
memory
liquid crystal
crystal panel
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Ceased
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PCT/CN2016/089743
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English (en)
French (fr)
Inventor
陈宥烨
吴宇
谢剑军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US15/303,573 priority Critical patent/US10147385B2/en
Publication of WO2017190426A1 publication Critical patent/WO2017190426A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G09G3/36—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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • 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
    • 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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096—Details of the interface to the display terminal specific for a flat panel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0289—Details of voltage level shifters arranged for use in a driving circuit
    • 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
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/028—Generation of voltages supplied to electrode drivers in a matrix display other than LCD

Definitions

  • the invention belongs to the technical field of liquid crystal displays, and more particularly to a system for adjusting the gamma coding of a liquid crystal panel online.
  • the same batch of panels will burn the same version of gamma code, but there are inter-chip differences between liquid crystal cells.
  • the same version of gamma code is not optimal for each liquid crystal cell, gamma
  • the curve may not meet specifications, resulting in a decline in product grade.
  • the technique of adjusting gamma coding online has been developed to ensure that the gamma coding of each liquid crystal cell is optimal, but since the gamma code is programmed in the gamma register, the technique of adjusting the gamma code on-line must be performed. It is applied to the combined model and therefore cannot be used in the split model.
  • the gamma register needs to be always connected to the interface, and the interference signal of the interface may affect the gamma code in the register, causing the gamma code to be erroneously modified.
  • an exemplary embodiment of the present invention provides a system capable of adjusting a gamma code of a liquid crystal panel online.
  • a system for online adjustment of gamma coding of a liquid crystal panel may comprise: an interface for receiving an adjusted gamma code from an external gamma code adjustment device And generating an enable signal; a memory storing an adjusted gamma code received by the interface based on a level state of the enable signal; and a controller selectively reading the gamma code from the memory based on a level state of the enable signal a gamma encoding register that receives the gamma code read by the controller and outputs a gamma voltage corresponding to the gamma code read by the controller to drive the liquid crystal panel.
  • the memory may be stored when the level state of the enable signal is high The adjusted gamma code received by the interface.
  • the controller may read a gamma code from a memory when a level state of the enable signal is a low level, and receive, by the gamma code register, the read by the controller Gamma coding.
  • the system may further include a switch located between the memory, the controller, the gamma encoding register, and the interface, and configured to be closed based on a level state of the enable signal or disconnect.
  • a switch located between the memory, the controller, the gamma encoding register, and the interface, and configured to be closed based on a level state of the enable signal or disconnect.
  • the switch may be closed when the enable signal level state is high, and open when the enable signal level state is low.
  • the memory may be an electrically erasable programmable read only memory, and the electrically erasable programmable read only memory is stored by the interface when a level state of the enable signal is a low level. Adjusted gamma encoding.
  • system may further include an inverter coupled between the electrically erasable programmable read only memory and the interface and configured to cause input to the electrically erasable The level state of the enable signal of the programmable read only memory is inverted.
  • the memory may be a flash memory that stores the adjusted gamma code received by the interface when the level state of the enable signal is high.
  • the controller may read the gamma code stored in the flash memory via the serial bus when the level state of the enable signal is low.
  • the adjusted gamma code received by the interface may be stored in the memory based on the address information.
  • FIG. 1 is a block diagram of a system for online adjustment of gamma coding of a liquid crystal panel, according to an exemplary embodiment of the present disclosure
  • FIG. 2 is a block diagram of a system for adjusting gamma coding of a liquid crystal panel in-line, according to another exemplary embodiment of the present disclosure
  • FIG. 3 is a flowchart illustrating an operation of adjusting gamma encoding of a liquid crystal panel in-line according to an exemplary embodiment of the present disclosure.
  • FIG. 1 is a block diagram of a system for adjusting gamma coding of a liquid crystal panel in-line, according to an exemplary embodiment of the present disclosure.
  • a system for adjusting gamma coding of a liquid crystal panel in-line includes a controller 101, a gamma register 102, a memory 103, and an interface 104.
  • the controller 101 may be a timing controller of a liquid crystal panel
  • the memory 103 may be an EEPROM of an electrically erasable programmable read only memory (EEPROM) or a timing controller.
  • the system may further include a switch 105 and an inverter 106. The switch 105 is located between the controller 101, the gamma code register 102, the EEPROM 103, and the interface 104.
  • the inverter 106 is connected between the EEPROM 103 and the interface 104 between the controller 101, the gamma register 102, the EEPROM 103, the interface 104, and the switch 105, and can be connected to each other using the I 2 C bus 10.
  • the interface 104 may receive the adjusted gamma code from an external gamma code adjustment device, and the interface 104 may also generate an enable signal that may be transmitted through the signal line 11 to the controller 101, gamma
  • the horse encodes the register 102, the EEPROM 103, and the switch 105.
  • the signal line 11 may be any type of signal line capable of transmitting two level states (a high level state and a low level state), and the signal line 11 is not connected to the outside.
  • the controller 101 can recognize the level state of the enable signal transmitted through the signal line 11 and have a setting for the level state of the enable signal, for example, when the level state of the enable signal is a high level state, The controller 101 can recognize the high state and set its own state to the slave state. In the slave state, the controller 101 can only be written (written to the EEPROM 103), and other components cannot be read and operated. When the level state of the enable signal is a low state, the controller 101 can recognize the low state and set its own state to the master state. In the main state, the controller 101 can read and manipulate other components.
  • EEPROM 103 has a writable/unwritable state corresponding to the level state of the enable signal.
  • the state of the EEPROM 103 is a non-writable state in which information stored in the EEPROM 103 (for example, gamma stored in the EEPROM 103) is stored.
  • the code can only be read by other components (such as controller 101) and cannot be written.
  • the level state of the enable signal is a low state
  • the state of the EEPROM 103 is a writable state in which the EEPROM 103 can be written with new information (e.g., adjusted gamma code).
  • the switch 105 may have a closed/open state corresponding to the level state of the enable signal.
  • switch 105 can be closed when the enable signal is in a high state and open when the enable signal is in a low state.
  • an external gamma encoding adjustment device may be connected to the interface 104 and the level state of the enable signal is set to a high state.
  • the enable signal is high
  • the switch 105 is closed and the I 2 C bus 10 is connected to the interface 104.
  • the controller 101 is in a slave state. Due to the action of the inverter 106, the enable signal input to the EEPROM 103 is in a low state, and therefore, the EEPROM 103 is in a writable state, and the external gamma code adjusting means can write the adjusted gamma code to the EEPROM 103. .
  • controller 101 may each have a unique address.
  • the gamma code can be written to the EEPROM 103 based on the unique address.
  • the switch 105 when the enable signal is in a low-level state, the switch 105 is turned off and the controller 101 is in a master state.
  • the enable signal input to the EEPROM 103 is in a high state by the action of the inverter 106, and therefore, the EEPROM 103 is not writable.
  • the controller 101 can read the gamma code in the EEPROM 103 via the I 2 C bus 10, and the gamma code register 102 can receive the gamma code read by the controller 101 via the I 2 C bus 10 and output according to the gamma code. A corresponding gamma voltage is applied to drive the liquid crystal panel.
  • the gamma encoding can be adjusted online in accordance with the level state of the enable signal.
  • the level state of the enable signal is a low state.
  • the level state of the enable signal is switched to the high state, and the controller 101 is in the slave state, and the enable signal input to the EEPROM 103 via the inverter 106 is in a low state. Therefore, the EEPROM 103 is in a writable state, and the external gamma code adjusting means can write the gamma code to the EEPROM 103 based on the unique address.
  • the level state of the enable signal is switched to the low state, the states of the respective components (the controller 101, the gamma code register 102, the EEPROM 103) are changed correspondingly, and the EEPROM 103 is read by the controller 101.
  • the adjusted gamma encoding is stored, and then the adjusted gamma encoding is received by the gamma encoding register 102, and the liquid crystal panel is driven according to the adjusted gamma encoding.
  • the online adjustment of the gamma code can be realized by the above operation of the level state switching of the enable signal.
  • the switch 105 when the gamma encoding is not required to be adjusted online, since the switch 105 is turned off, the respective components (the controller 101, the gamma encoding register 102, the EEPROM 103) are disconnected from the interface 104, and thus are not externally received. interference.
  • FIG. 2 is a block diagram of a system for adjusting gamma coding of a liquid crystal panel in-line, according to another exemplary embodiment of the present disclosure.
  • a system for adjusting gamma coding of a liquid crystal panel in-line includes a controller 101, a gamma register 102, a memory 203, and an interface 104.
  • the controller may be a timing controller of the liquid crystal panel, and the memory may be a flash memory of a flash memory or a timing controller.
  • the system may further include a switch 105. The switch 105 is located between the controller 101, the gamma code register 102, the flash memory 203, and the interface 104.
  • the interface 104 may receive the adjusted gamma code from an external gamma code adjustment device, and the interface 104 may also generate an enable signal that may be transmitted through the signal line 11 to the controller 101, gamma The horse code register 102, the flash memory 203, and the switch 105.
  • the signal line 11 may be any type of signal line capable of transmitting two level states (a high level state and a low level state), and the signal line 11 is not connected to the outside.
  • the controller 101 can recognize the level state of the enable signal transmitted through the signal line 11 and have a setting for the level state of the enable signal, for example, when the level state of the enable signal is a high level state, The controller 101 can recognize the high state and set its own state to the slave state. In the slave state, the controller 101 can only be written (written to the flash memory 203), and other components cannot be read and operated. When the level state of the enable signal is a low state, the controller 101 can recognize the low state and set its own state to the master state. In the main state, the controller 101 can read and manipulate other components.
  • flash memory 203 has a writable/unwritable state corresponding to the level state of the enable signal.
  • the state of the flash memory 203 is a non-writable state in which information stored in the flash memory 203 (for example, gamma stored in the flash memory 203) is stored.
  • the code can only be read by other components (such as controller 101) and cannot be written.
  • the level state of the enable signal is a high state
  • the state of the flash memory 203 is a writable state in which the flash memory 203 can be written with new information (e.g., adjusted gamma code).
  • the switch 105 may have a closed/open state corresponding to the level state of the enable signal.
  • switch 105 can be closed when the enable signal is in a high state and open when the enable signal is in a low state.
  • an external adjustment device may be connected to the interface 104 and the level state of the enable signal is set to a high state.
  • the enable signal is high
  • the switch 105 is closed and the I 2 C bus 10 is connected to the interface 104.
  • the controller 101 is in a slave state.
  • the flash memory 203 is in a writable state, and the external gamma code adjustment means can write the adjusted gamma code to the flash memory 203.
  • controller 101 via various components (controller 101, gamma encoding register 102, flash memory 203) Each has a unique address.
  • the gamma code can be written to the flash memory 203 of the controller 101 in accordance with the unique address.
  • the controller 101 when the enable signal is in a low state, the switch 105 is turned off, the controller 101 is in a master state, and the flash memory 203 is not writable.
  • the controller 101 may be a flash memory 203 via the gamma encoding reads the serial bus 12, gamma encoding gamma encoding register 102 via I 2 C 10 received by the bus controller 101 read and output the corresponding coded according to a gamma The gamma voltage is used to drive the liquid crystal panel.
  • the gamma encoding can be adjusted online in accordance with the level state of the enable signal.
  • the level state of the enable signal is a low state.
  • the level state of the enable signal is switched to the high state. Therefore, the controller 101 is in the slave state, the flash memory 203 is in the writable state, and the external gamma code adjusting device can be uniquely The address writes the gamma code to the flash memory 203 of the controller 101.
  • the level state of the enable signal is switched to the low state, the states of the respective components (the controller 101, the gamma code register 102, the flash memory 203) are changed correspondingly, the switch 105 is turned off, and the controller is turned off.
  • the read gamma code stored in the flash memory 203 is read 101, and then the adjusted gamma code is received by the gamma code register 102, and the liquid crystal panel is driven according to the adjusted gamma code.
  • the online adjustment of the gamma code can be realized by the above operation of the level state switching of the enable signal.
  • the switch 105 when the gamma encoding is not required to be adjusted online, since the switch 105 is turned off, the respective components (the controller 101, the gamma encoding register 102, the flash memory 203) are disconnected from the interface 104, and thus are not externally received. interference.
  • FIG. 3 is a flowchart illustrating an operation of adjusting gamma encoding of a liquid crystal panel in-line according to an exemplary embodiment of the present disclosure.
  • the gamma register can output a gamma voltage according to the gamma code to drive the liquid crystal panel.
  • the gamma code is stored in a memory (EEPROM 103 or flash memory 203), and the controller 101 can read the memory stored in the memory.
  • the gamma code is written into the gamma register. When the gamma code needs to be adjusted online, the following operations can be performed.
  • an external gamma code adjustment device can be connected to the interface 104.
  • the enable signal level state is converted to a high level state.
  • the level state of the enable signal is switched from the default low state to the high state.
  • the controller 101 The status is from the status. If the memory is the flash memory 203, an enable signal of a high level state is input to the flash memory 203, and therefore, the flash memory 203 is in a writable state. If the memory is the EEPROM 103, the enable signal of the high state is input to the EEPROM 103 via the inverter, and therefore, the state of the enable signal input to the EEPROM 103 is a low state, and the EEPROM 103 is in a writable state. .
  • the switch 105 is closed, and the controller 101, the gamma code register 102, the EEPROM 103 or the flash memory 203 are connected to the interface 104, so that the adjusted gamma code can be received from the external gamma code adjustment device.
  • the adjusted gamma code can be written to the memory according to the address.
  • the controller 101, the gamma code register 102, the EEPROM 103, or the flash memory 203 each have a unique address. Therefore, the adjusted gamma code can be written to the memory (EEPROM 103 or flash memory 203) according to the unique address.
  • the enable signal level state is converted to a low state. After the adjustment of the adjusted gamma code is completed, the level state of the enable signal can be changed to a low state.
  • the state of the controller 101 is the main state. If the memory is the flash memory 203, the enable signal of the low state is input to the flash memory 203, and therefore, the flash memory 203 is in a non-writable state. If the memory is the EEPROM 103, the enable signal of the low state is input to the EEPROM 103 via the inverter, and therefore, the state of the enable signal input to the EEPROM 103 is a high state, and the EEPROM 103 is not writeable. . At the same time, the switch 105 is turned off, and the gamma code is no longer received from the external gamma code adjustment device, and external interference can be avoided, and the gamma code in the memory is prevented from being erroneously modified.
  • the controller 101 can read the adjusted gamma code in the EEPROM 103 via the I 2 C bus 10 or read the adjusted gamma code in the flash memory 203 via the serial bus 12.
  • Gamma encoding gamma encoding via register 102 receives the adjusted I 2 C bus 10, and outputs corresponding gamma voltage to drive the liquid crystal panel.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Picture Signal Circuits (AREA)
  • Liquid Crystal (AREA)

Abstract

一种用于在线调整液晶面板的伽马编码的系统包括：接口(104)，从外部伽马编码调整装置接收调整的伽马编码并产生使能信号；存储器(103)，基于使能信号的电平状态存储由所述接口(104)接收的调整的伽马编码；控制器(101)，基于使能信号的电平状态选择性地从存储器(103)读取伽马编码；伽马编码寄存器(102)，接收由控制器(101)读取的伽马编码，并输出与控制器(101)读取的伽马编码对应的伽马电压以驱动液晶面板。

Description

用于在线调整液晶面板的伽马编码的系统 技术领域
本发明属于液晶显示器技术领域，更具体地说，涉及一种用于在线调整液晶面板的伽马编码的系统。
背景技术
在液晶面板的生产中，同一批面板会烧录同一版伽马编码，但液晶晶元之间存在片间差异，同一版伽马编码并非对于每个液晶晶元都是最佳的，伽马曲线可能会不符合规格，导致产品等级下降。目前，已经开发了在线调整伽马编码的技术，以保证每个液晶晶元的伽马编码为最佳，但由于伽马编码烧录于伽马寄存器内，使得在线调整伽马编码的技术必须应用于合并机种，因此在分离机种中无法使用。并且，由于在线调整的需要，伽马寄存器需要一直连接接口，接口的干扰信号可能会影响寄存器内的伽马编码，导致伽马编码被错误修改。
发明内容
为克服现有技术的不足，本发明的示例性实施例提供一种能够在线调整液晶面板的伽马编码的系统。
根据本发明的示例性实施例，提供一种用于在线调整液晶面板的伽马编码的系统，其特征在于，所述系统可包括：接口，从外部伽马编码调整装置接收调整的伽马编码并产生使能信号；存储器，基于使能信号的电平状态存储由所述接口接收的调整的伽马编码；控制器，基于使能信号的电平状态选择性地从存储器读取伽马编码；伽马编码寄存器，接收由控制器读取的伽马编码，并输出与控制器读取的伽马编码对应的伽马电压以驱动液晶面板。
可选地，所述存储器可在所述使能信号的电平状态为高电平时存储由所述 接口接收的调整的伽马编码。
可选地，所述控制器可在所述使能信号的电平状态为低电平时从存储器读取伽马编码，并由所述伽马编码寄存器接收由所述控制器读取的所述伽马编码。
可选地，所述系统还可包括开关，所述开关位于所述存储器、控制器、伽马编码寄存器与所述接口之间，并被配置为基于所述使能信号的电平状态闭合或断开。
可选地，所述开关可在所述使能信号电平状态为高电平时闭合，在所述使能信号电平状态为低电平时断开。
可选地，所述存储器可以是电可擦除可编程只读存储器，所述电可擦除可编程只读存储器在所述使能信号的电平状态为低电平时存储由所述接口接收的调整的伽马编码。
可选地，所述系统还可包括反相器，所述反相器连接在电可擦除可编程只读存储器和所述接口之间，并被配置为使输入至所述电可擦除可编程只读存储器的使能信号的电平状态反转。
可选地，所述存储器可以是闪存，所述闪存在所述使能信号的电平状态为高电平时存储由所述接口接收的调整的伽马编码。
可选地，所述控制器可在所述使能信号的电平状态为低电平时经由串行总线读取存储在所述闪存中的伽马编码。
可选地，由所述接口接收的调整的伽马编码可根据地址信息存储于所述存储器中。
将在接下来的描述中部分阐述本发明另外的方面和/或优点，还有一部分通过描述将是清楚的，或者可以经过本发明的实施而得知。
附图说明
通过下面结合附图进行的对实施例的描述，本发明的上述和/或其它目的和优点将会变得更加清楚，其中：
图1是根据本公开的示例性实施例示出的用于在线调整液晶面板的伽马编码的系统的框图；
图2是根据本公开的另一示例性实施例示出的用于在线调整液晶面板的伽马编码的系统的框图；
图3是根据本公开的示例性实施例示出的在线调整液晶面板的伽马编码的操作的流程图。
具体实施方式
现将详细描述本发明的示例性实施例，所述实施例的示例在附图中示出，其中，相同的标号指示相同的部分。以下将通过参照附图来说明所述实施例，以便解释本发明。
应理解的是，所公开的实施例仅为示例，并且其它实施例可采用各种可替代形式。附图不必按比例绘制，可夸大或最小化一些特征以示出特定部件的细节。在此公开的具体结构和功能细节不应被解释为限制，而仅为用于教导本领域技术人员以多种形式使用本发明的代表性基础。本领域普通技术人员将理解，参照任一附图说明和描述的各种特征可与一个或更多个其它附图中说明的特征组合以产生未明确说明或描述的实施例。说明的特征的组合提供用于典型应用的代表实施例。然而，与本公开的教导一致的特征的多种组合和变型可被期望用于特定应用或实施方式。
图1是根据本公开的示例性实施例示出的用于在线调整液晶面板的伽马编码的系统的框图。
参照图1，用于在线调整液晶面板的伽马编码的系统包括控制器101、伽马寄存器102、存储器103、接口104。，控制器101可以是液晶面板的时序控制器，存储器103可以是电可擦除可编程只读存储器(EEPROM)或时序控制 器的EEPROM。可选的，所述系统还可包括开关105和反相器106。开关105位于控制器101、伽马编码寄存器102、EEPROM 103与接口104之间。反相器106连接在EEPROM 103和接口104之间控制器101、伽马寄存器102、EEPROM 103、接口104以及开关105之间可使用I2C总线10相互连接。在示例性实施例中，接口104可从外部伽马编码调整设备接收调整的伽马编码，并且，接口104还可产生使能信号，使能信号可通过信号线11传输至控制器101、伽马编码寄存器102、EEPROM 103和开关105。其中，信号线11可以是能够传输具有两种电平状态(高电平状态和低电平状态)的任何类型的信号线，并且信号线11不与外部相连。
控制器101可识别经过信号线11传输的使能信号的电平状态，并具有针对使能信号的电平状态的设定，例如，当使能信号的电平状态为高电平状态时，控制器101可识别所述高电平状态，并将自身的状态设置为从状态。在所述从状态下，控制器101只能被写入(写入EEPROM 103)，不能读取和操作其它组件。当使能信号的电平状态为低电平状态时，控制器101可识别所述低电平状态，并将自身的状态设置为主状态。在所述主状态下，控制器101可以读取和操作其它组件。
在示例性实施例中，EEPROM 103具有对应于使能信号的电平状态的可写/不可写状态。例如，当使能信号的电平状态为高电平状态时，EEPROM 103的状态为不可写状态，在所述不可写状态下，EEPROM 103中存储的信息(例如存储在EEPROM 103中的伽马编码)只能被其他组件(例如控制器101)读取，而不能被写入。当使能信号的电平状态为低电平状态时，EEPROM 103的状态为可写状态，在所述可写状态下，EEPROM 103可被写入新的信息(例如调整的伽马编码)。
可选地，开关105可具有对应于使能信号的电平状态的闭合/断开状态。例如，开关105可在使能信号为高电平状态时闭合，在使能信号为低电平状态时断开。
在示例性实施例中，当在线调整EEPROM 103中的伽马编码时，可将外部伽马编码调整设备连接至接口104，并将使能信号的电平状态设置为高电平状态。在使能信号为高电平状态下，开关105闭合，I2C总线10与接口104接通。 在使能信号为高电平的状态下，控制器101为从状态。由于反相器106的作用，输入至EEPROM 103中的使能信号为低电平状态，因此，EEPROM 103处于可写入状态，外部伽马编码调整装置可将调整的伽马编码写入EEPROM 103。
可选地，各个组件(控制器101、伽马编码寄存器102、EEPROM 103)可分别具有唯一的地址。可根据所述唯一的地址将伽马编码写入EEPROM 103。
在示例性实施例中，当使能信号为低点平状态时，开关105断开，控制器101为主状态。经过反相器106的作用，输入到EEPROM 103的使能信号为高电平状态，因此，EEPROM 103不可写入。控制器101可经由I2C总线10读取EEPROM 103中的伽马编码，伽马编码寄存器102可经由I2C总线10接收由控制器101读取的伽马编码，并根据伽马编码输出相应的伽马电压以驱动液晶面板。
在以上的实施例中，可根据使能信号的电平状态在线地调整伽马编码。例如，在默认状态下，使能信号的电平状态为低电平状态。当需要在线调整伽马编码时，将使能信号的电平状态切换为高电平状态，控制器101为从状态，经由反相器106输入至EEPROM 103的使能信号为低电平状态，因此EEPROM 103为可写入状态，外部伽马编码调整装置可根据唯一的地址将伽马编码写入EEPROM 103。写入完成后，使能信号的电平状态切换为低电平状态，各个组件(控制器101、伽马编码寄存器102、EEPROM 103)的状态相应地改变，并由控制器101读取EEPROM 103中存储的调整的伽马编码，之后由伽马编码寄存器102接收所述调整的伽马编码，并根据调整的伽马编码驱动液晶面板。经由以上的使能信号的电平状态切换的操作，可实现伽马编码的在线调整。此外，在不需要在线调整伽马编码时，由于开关105断开，因此各个组件(控制器101、伽马编码寄存器102、EEPROM 103)与接口104之间是断开的，因此不会受到外部干扰。
图2是根据本公开的另一示例性实施例示出的用于在线调整液晶面板的伽马编码的系统的框图。
参照图2，用于在线调整液晶面板的伽马编码的系统包括控制器101、伽马寄存器102、存储器203、接口104。控制器可以是液晶面板的时序控制器，存储器可以是闪存或时序控制器的闪存。可选的，所述系统还可包括开关105。 开关105位于控制器101、伽马编码寄存器102、闪存203与接口104之间。
在示例性实施例中，接口104可从外部伽马编码调整设备接收调整的伽马编码，并且，接口104还可产生使能信号，使能信号可通过信号线11传输至控制器101、伽马编码寄存器102、闪存203和开关105。其中，信号线11可以是能够传输具有两种电平状态(高电平状态和低电平状态)的任何类型的信号线，并且信号线11不与外部相连。
控制器101可识别经过信号线11传输的使能信号的电平状态，并具有针对使能信号的电平状态的设定，例如，当使能信号的电平状态为高电平状态时，控制器101可识别所述高电平状态，并将自身的状态设置为从状态。在所述从状态下，控制器101只能被写入(写入闪存203)，不能读取和操作其它组件。当使能信号的电平状态为低电平状态时，控制器101可识别所述低电平状态，并将自身的状态设置为主状态。在所述主状态下，控制器101可以读取和操作其它组件。
在示例性实施例中，闪存203具有对应于使能信号的电平状态的可写/不可写状态。例如，当使能信号的电平状态为低电平状态时，闪存203的状态为不可写状态，在所述不可写状态下，闪存203中存储的信息(例如存储在闪存203中的伽马编码)只能被其他组件(例如控制器101)读取，而不能被写入。当使能信号的电平状态为高电平状态时，闪存203的状态为可写状态，在所述可写状态下，闪存203可被写入新的信息(例如调整的伽马编码)。
可选地，开关105可具有对应于使能信号的电平状态的闭合/断开状态。例如，开关105可在使能信号为高电平状态时闭合，在使能信号为低电平状态时断开。
在示例性实施例中，当在线调整闪存203中的伽马编码时，可将外部调整设备连接至接口104，并将使能信号的电平状态设置为高电平状态。在使能信号为高电平状态下，开关105闭合，I2C总线10与接口104接通。在使能信号为高电平的状态下，控制器101为从状态。闪存203处于可写入状态，外部伽马编码调整装置可将调整的伽马编码写入闪存203。
可选地，经由各个组件(控制器101、伽马编码寄存器102、闪存203)可 分别具有唯一的地址。可根据所述唯一的地址将伽马编码写入控制器101的闪存203。
在示例性实施例中，当使能信号为低电平状态时，开关105断开，控制器101为主状态并且闪存203不可写入。控制器101可经由串行总线12读取闪存203中的伽马编码，伽马编码寄存器102可经由I2C总线10接收由控制器101读取的伽马编码，并根据伽马编码输出相应的伽马电压以驱动液晶面板。
在以上的实施例中，可根据使能信号的电平状态在线地调整伽马编码。例如，在默认状态下，使能信号的电平状态为低电平状态。当需要在线调整伽马编码时，将使能信号的电平状态切换为高电平状态，因此，控制器101为从状态，闪存203为可写入状态，外部伽马编码调整装置可根据唯一的地址将伽马编码写入控制器101的闪存203。写入完成后，使能信号的电平状态切换为低电平状态，各个组件(控制器101、伽马编码寄存器102、闪存203)的状态相应地改变，开关105断开，并由控制器101读取闪存203中存储的调整的伽马编码，之后由伽马编码寄存器102接收所述调整的伽马编码，并根据调整的伽马编码驱动液晶面板。经由以上的使能信号的电平状态切换的操作，可实现伽马编码的在线调整。此外，在不需要在线调整伽马编码时，由于开关105断开，因此各个组件(控制器101、伽马编码寄存器102、闪存203)与接口104之间是断开的，因此不会受到外部干扰。
图3是根据本公开的示例性实施例示出的在线调整液晶面板的伽马编码的操作的流程图。
伽马寄存器可根据伽马编码输出伽马电压，从而驱动液晶面板，在以上的实施例中，伽马编码存储于存储器(EEPROM 103或闪存203)中，控制器101可读取存储器中存储的伽马编码，并写入伽马寄存器中，当需要在线调整伽马编码时，可执行以下操作。
在S301中，操作开始。在该步骤中，可将外部伽马编码调整装置连接至接口104。
在操作S302中，将使能信号电平状态转换为高电平状态。在该步骤中，使能信号的电平状态由默认的低电平状态转换为高电平状态，此时，控制器101 的状态为从状态。如果存储器为闪存203，则将高电平状态的使能信号输入至闪存203，因此，闪存203为可写入状态。如果存储器为EEPROM 103，则高电平状态的使能信号经由反相器输入至EEPROM 103，因此，输入至EEPROM 103的使能信号的状态为低电平状态，则EEPROM 103为可写入状态。同时，开关105闭合，将控制器101、伽马编码寄存器102、EEPROM 103或闪存203与接口104连接，因此可从外部伽马编码调整装置接收调整的伽马编码。
在操作S303中，调整的伽马编码可根据地址写入存储器。控制器101、伽马编码寄存器102、EEPROM 103或闪存203均具有唯一的地址。因此可根据唯一的地址将调整的伽马编码写入存储器(EEPROM 103或闪存203)。
在操作S304中，将使能信号电平状态转换为低电平状态。调整的伽马编码的写入完成之后，可将使能信号的电平状态装换为低电平状态。控制器101的状态为主状态。如果存储器为闪存203，则将低电平状态的使能信号输入至闪存203，因此，闪存203为不可写入状态。如果存储器为EEPROM 103，则低电平状态的使能信号经由反相器输入至EEPROM 103，因此，输入至EEPROM 103的使能信号的状态为高电平状态，则EEPROM 103为可不写入状态。同时，开关105断开，不再从外部伽马编码调整装置接收伽马编码，同时可避免受到外部的干扰，避免存储器中的伽马编码被错误地修改。
在操作S305中，操作结束。调整操作结束后，控制器101可经由I2C总线10读取EEPROM 103中的调整的伽马编码，或者经由串行总线12读取闪存203中的调整的伽马编码。伽马编码寄存器102可经由I2C总线10接收调整的伽马编码，并输出相应的伽马电压以驱动液晶面板。
本发明的以上实施例仅仅是示例性的，而本发明并不受限于此。本领域技术人员应该理解：在不脱离本发明的原理和精神的情况下，可对这些实施例进行改变，可将各种实施例的特征进行组合或等效替换以形成本发明的可能未被明确描述或示出的进一步的实施例。其中，本发明的范围在权利要求及其等同物中限定。

Claims (10)

  1. 一种用于在线调整液晶面板的伽马编码的系统，其中，所述系统包括：
    接口，从外部伽马编码调整装置接收调整的伽马编码并产生使能信号；
    存储器，基于使能信号的电平状态存储由所述接口接收的调整的伽马编码；
    控制器，基于使能信号的电平状态选择性地从存储器读取伽马编码；
    伽马编码寄存器，接收由控制器读取的伽马编码，并输出与控制器读取的伽马编码对应的伽马电压以驱动液晶面板。
  2. 根据权利要求1所述的用于在线调整液晶面板的伽马编码的系统，其中，所述存储器在所述使能信号的电平状态为高电平时存储由所述接口接收的调整的伽马编码。
  3. 根据权利要求1所述的用于在线调整液晶面板的伽马编码的系统，其中，所述控制器在所述使能信号的电平状态为低电平时从存储器读取伽马编码，并由所述伽马编码寄存器接收由所述控制器读取的所述伽马编码。
  4. 根据权利要求1所述的用于在线调整液晶面板的伽马编码的系统，其中，所述系统还包括开关，所述开关位于所述存储器、控制器、伽马编码寄存器与所述接口之间，并被配置为基于所述使能信号的电平状态闭合或断开。
  5. 根据权利要求4所述的用于在线调整液晶面板的伽马编码的系统，其中，所述开关在所述使能信号电平状态为高电平时闭合，在所述使能信号电平状态为低电平时断开。
  6. 根据权利要求1所述的用于在线调整液晶面板的伽马编码的系统，其中，所述存储器是电可擦除可编程只读存储器，所述电可擦除可编程只读存储器在所述使能信号的电平状态为低电平时存储由所述接口接收的调整的伽马编码。
  7. 根据权利要求6所述的用于在线调整液晶面板的伽马编码的系统，其中，所述系统还包括反相器，所述反相器连接在电可擦除可编程只读存储器和所述接口之间，并被配置为使输入至所述电可擦除可编程只读存储器的使能信 号的电平状态反转。
  8. 根据权利要求1所述的用于在线调整液晶面板的伽马编码的系统，其中，所述存储器是闪存，所述闪存在所述使能信号的电平状态为高电平时存储由所述接口接收的调整的伽马编码。
  9. 根据权利要求8所述的用于在线调整液晶面板的伽马编码的系统，其中，所述控制器在所述使能信号的电平状态为低电平时经由串行总线读取存储在所述闪存中的伽马编码。
  10. 根据权利要求1所述的用于在线调整液晶面板的伽马编码的系统，其中，由所述接口接收的调整的伽马编码根据地址信息存储于所述存储器中。
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