WO2014047998A1 - 3d电视的调光系统及调光方法 - Google Patents

3d电视的调光系统及调光方法 Download PDF

Info

Publication number
WO2014047998A1
WO2014047998A1 PCT/CN2012/083491 CN2012083491W WO2014047998A1 WO 2014047998 A1 WO2014047998 A1 WO 2014047998A1 CN 2012083491 W CN2012083491 W CN 2012083491W WO 2014047998 A1 WO2014047998 A1 WO 2014047998A1
Authority
WO
WIPO (PCT)
Prior art keywords
comparator
signal
coupled
output
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/083491
Other languages
English (en)
French (fr)
Inventor
杨翔
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
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/698,998 priority Critical patent/US9007366B2/en
Publication of WO2014047998A1 publication Critical patent/WO2014047998A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/816—Monomedia components thereof involving special video data, e.g 3D video
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • G09G2330/021—Power management, e.g. power saving
    • 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
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • 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 the field of liquid crystal display, and more particularly to a dimming system and a dimming method for a 3D television.
  • the dimming of the backlight is also different from the case of displaying the 2D signal.
  • the 3D signal is generally sent by the movement board 5 to the CONTROL BOARD of the television, and the TV control board 2 according to the defined DUTY after receiving the 3D signal.
  • the air ratio) and the DELAY command CONVERTER (converter 3) are dimmed.
  • the current and voltage of LIGHT BAR violent light source 4
  • both converter 3 and power supply board 1 need a fast dynamic response to meet the instantaneous load change (current and voltage change of the light bar).
  • blindly adjusting the response speed will make the entire power system unstable and oscillate. Therefore, there is no need to improve the corresponding speed of the power system in another way.
  • the technical problem to be solved by the present invention is to provide a dimming system and a dimming method for a 3D television with fast response speed.
  • a dimming system for a 3D television comprising:
  • a power board that supplies power to the light source load
  • the TV control board is directly coupled to the power board, and the TV control board feeds the 3D signal to the power board when the output is a 3D signal;
  • the power board includes a first comparator, a second comparator, a third comparator, and an output circuit, and outputs of the first comparator and the second comparator are respectively coupled to an input end of the third comparator, An input end of the first comparator is coupled to the television control board, and an output end of the third comparator is coupled to an input end of the output circuit;
  • the output circuit includes a fourth comparator coupled to an output of the third comparator, and a flip-flop coupled to an output of the fourth comparator;
  • the light source load includes a light source and a converter thereof, the converter is coupled to an output end of the television control board, and the television control board sends a 3D signal to the conversion while feeding a 3D signal to the power board Device.
  • a dimming system for a 3D television comprising: a television control panel; a light source load controlled by a television control panel; a power supply board that supplies power to the light source load; the television control The board is directly coupled to the power board, and the TV board feeds the 3D signal to the power board when the output is a 3D signal.
  • the power board includes a first comparator, a second comparator, a third comparator, and an output circuit, and outputs of the first comparator and the second comparator are respectively coupled to the input ends of the third comparator
  • the input of the first comparator is coupled to the television control board, and the output of the third comparator is coupled to an input of the output circuit.
  • said output circuit includes a fourth comparator coupled to the output of said third comparator, and a flip flop coupled to the output of said fourth comparator.
  • the light source load comprises a light source and a converter thereof, and the converter is coupled to an output end of the television control board, and the television control board sends the 3D signal to the power board when the 3D signal is fed forward to the power board The converter.
  • the 3D signal is an identification potential of a high level.
  • a method of dimming a 3D television comprising the following steps:
  • the 3D signal is sent to the light source load for dimming; and the 3D signal is fed forward to the power board.
  • the 3D signal is simultaneously sent to the power board and the light source load.
  • the TV control board when the TV control board outputs a 3D signal, the TV control board sends the 3D signal to the power board before transmitting the 3D signal to the light source load. Sending the 3D signal to the power board in advance allows the power board to adjust in advance and output the corresponding voltage.
  • the power board includes a first comparator, a second comparator, a third comparator, and an output circuit
  • the first comparator receives the 3D signal sent by the television control board and compares and outputs with a reference voltage.
  • a first comparison signal receives the feedback signal of the light source load feedback and compares with another reference voltage to output a second comparison signal, and the first comparison signal and the second comparison signal are compared in a third comparator
  • the third comparison signal is output to the output circuit for control output.
  • the output circuit includes a fourth comparator, and a flip-flop coupled to an output of the fourth comparator, the third comparison signal being sent to the fourth comparator and coupled to a triangular wave signal After the comparison, a trigger signal is output to the flip-flop, and the output of the power board is directly controlled by the flip-flop.
  • the TV control board sends the 3D signal to the power board in advance, so that the power board does not need to wait for the feedback signal of the light source load, and the corresponding output adjustment can be made in advance, so that the power board accelerates the dynamic response speed. At the same time, it does not affect the stability of the loop.
  • FIG. 1 is a block diagram of a prior art dimming system of the present invention
  • FIG. 2 is a block diagram of a dimming system according to an embodiment of the present invention.
  • Figure 3 is a circuit diagram of the power supply of the embodiment of the board of the present invention.
  • the invention discloses a dimming system for a 3D television and a method thereof, as in the first embodiment, as shown in FIG. 2 and As shown in FIG. 3, the dimming system includes: a television control board 2, a light source load controlled by the television control board 2, and a power supply board 1 for supplying power to the light source load, and the television control board 2 is directly coupled with the power supply board 1.
  • the TV control board 2 When the TV control board 2 outputs a 3D signal, the 3D signal is fed forward to the power board 1; as can be seen from FIG.
  • the power board and the TV board are arranged to send a 3D signal to The circuit of the power board 1; when the TV input is a 3D signal, the television control board 2 sends the 3D signal to the power board 1 through the circuit, so that the power board 1 can be adjusted in advance to speed up the power supply.
  • the dynamic speed of board 1 is corresponding.
  • the 3D signal is simultaneously sent to the power board 1 and the light source load, as shown in FIG. 2, which is a dimming system according to an embodiment of the present invention.
  • the load comprises a light source 4 and its converter 3, said converter 3 being coupled to an output of said television control board 2, said television control board 2 transmitting a 3D signal to the power supply board 1 while feeding the 3D signal to The converter 3.
  • the converter 3 receives the 3D signal sent by the television control board 2, adjusts the light source 4, and then feeds back the adjusted dimming signal to the power board 1, since the television control board 2 is directly coupled to the power board 1, the television
  • the control board 2 outputs a 3D signal
  • the 3D signal is fed forward to the power board 1, so the power board 1 receives the 3D signal transmitted by the TV control board 2 in advance, so that the adjustment can be made in advance and the output light source 4 is output.
  • the required voltage there is no need to wait for the dimming signal fed back by the converter 3 to make adjustments.
  • FIG. 3 is a circuit diagram of a power board receiving output control portion according to an embodiment of the present invention, where the power board includes a first comparator U1A, a second comparator U2B, a third comparator U3B, and is triggered by a fourth comparator U4B.
  • An output circuit composed of components such as the first comparator U1A and the second comparator U2B are respectively coupled to an input end of the third comparator U3B, and the input end of the first comparator U1A is opposite to the television
  • the control board is coupled; the first comparator U1A receives the 3D signal sent by the television control board 2 and compares it with a reference voltage V R EF 2 to output a first comparison signal, and the second comparator U2B receives the light source
  • the dimming signal fed back by the load converter 3 is compared with another reference voltage VREF1 to output a second comparison signal, and the first comparison signal and the second comparison signal are respectively sent to the two inputs of the third comparator U3B for comparison.
  • the third comparison signal is output to the output circuit for control output.
  • the output circuit includes a fourth comparator U4B coupled to the output of the third comparator U3B, and a flip-flop coupled to the output of the fourth comparator 14, the third comparison signal being sent to
  • the fourth comparator U4B compares with a triangular wave signal and outputs a trigger signal to the flip-flop, and the trigger directly controls the output of the power board.
  • the 3D signal is a target potential of a high level/ ⁇ level.
  • the present invention further discloses a dimming method for a 3D television dimming system, including the following steps: When the TV control board 2 outputs a 3D signal, the 3D signal is sent to the light source load for dimming; And feeding the 3D signal to the power board 1.
  • the television control board 2 sends the 3D signal to the power board 1 through the circuit, so that the power board 1 can be adjusted in advance, and the dynamic response of the power board 1 is accelerated. speed.
  • the dimming method of the 3D television of the embodiment can be seen, that is, when the TV control board outputs a 3D signal, the 3D signal is simultaneously sent to the light source load for dimming; and the 3D signal is Feed the power board, and the power board is adjusted in advance to meet the adjusted load.
  • the difference from the first embodiment is that when the television control board outputs a 3D signal, the television control board sends the 3D signal to the power board before transmitting the 3D signal to the light source load. Sending the 3D signal to the power board in advance can further make the power board know the change of the light source load in advance, and make the power board adjust in advance, which further accelerates the dynamic response speed of the power board.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Description

3D电视的调光系统及调光方法
【技术领域】
本发明涉及液晶显示领域， 更具体的说， 涉及一种 3D电视的调光系统及调 光方法。
【背景技术】
3D 电视的电视系统中， 其由于左右眼显示的画面有所不同， 因而在其背 光的调光中也与显示 2D信号时不同。
如图 1所示， 在整个电视系统中， 一般情况下由机芯板 5发送 3D信号给 电视的 CONTROL BOARD (控制板 2 ) , 电视控制板 2在收到 3D信号后根据定 义的 DUTY (占空比） 和 DELAY (延迟）命令 CONVERTER (转换器 3 )进 行调光。 此时 LIGHT BAR (光源 4 ) 的电流、 电压剧烈变化， 转换器 3和电源 板 1 都需要较快的动态响应才能满足此时的瞬间负载变化（灯条的电流、 电压 变化）。 但一味的调节响应速度， 会使得整个电源系统不稳定而发生振荡。 因此 亟需以另一种方式提高电源系统的相应速度。
【发明内容】
本发明所要解决的技术问题是提供一种响应速度快的 3D 电视的调光系统 及调光方法。
本发明的目的是通过以下技术方案来实现的： 一种 3D电视的调光系统， 包 括：
电视控制板；
由电视控制板控制的光源负载；
为光源负载提供电源的电源板；
所述电视控制板与电源板直接耦合， 所述电视控制板在输出为 3D信号时， 将 3D信号前馈给电源板； 所述电源板包括第一比较器、 第二比较器、 第三比较器以及输出电路， 所 述第一比较器、 第二比较器的输出端分别与第三比较器的输入端耦合， 所述第 一比较器的输入端与所述电视控制板耦合， 所述第三比较器的输出端与所述输 出电路的输入端耦合；
所述输出电路包括一与所述第三比较器的输出端耦合的第四比较器， 以及 一与所述第四比较器的输出端耦合的触发器；
所述光源负载包括光源及其转换器， 所述转换器与所述电视控制板的输出 端耦合， 所述电视控制板在将 3D信号前馈给电源板的同时将 3D信号发送给所 述转换器。
本发明的目的还可以通过以下技术方案来实现： 一种 3D电视的调光系统， 包括： 电视控制板； 由电视控制板控制的光源负载； 为光源负载提供电源的电 源板；所述电视控制板与电源板直接耦合，所述电视控制板在输出为 3D信号时， 将 3D信号前馈给电源板。
优选的， 所述电源板包括第一比较器、 第二比较器、 第三比较器以及输出 电路， 所述第一比较器、 第二比较器的输出端分别与第三比较器的输入端耦合， 所述第一比较器的输入端与所述电视控制板耦合， 所述第三比较器的输出端与 所述输出电路的输入端耦合。
优选的， 所述输出电路包括一与所述第三比较器的输出端耦合的第四比较 器， 以及一与所述第四比较器的输出端耦合的触发器。
优选的， 所述光源负载包括光源及其转换器， 所述转换器与所述电视控制 板的输出端耦合， 所述电视控制板在将 3D信号前馈给电源板的同时将 3D信号 发送给所述转换器。
优选的， 所述的 3D信号为一高电平 氏电平的标识电位。
一种 3D电视的调光方法， 包括以下步骤：
电视控制板在输出为 3D信号时， 发送 3D信号到光源负载进行调光； 并将 所述 3D信号前馈给电源板。 优选的， 所述电视控制板在输出为 3D信号时， 同时将 3D信号发送给电源 板及光源负载。
优选的， 所述电视控制板在输出为 3D信号时， 电视控制板将 3D信号发送 给光源负载前， 就先将 3D信号发送给电源板。 将 3D信号提前发送给电源板可 使电源板提前进行调整， 输出相应的电压。
优选的， 所述电源板包括第一比较器、 第二比较器、 第三比较器以及输出 电路，所述第一比较器接收所述电视控制板发送的 3D信号并与一基准电压进行 比较输出第一比较信号， 所述第二比较器接收所述光源负载反馈的反馈信号并 与另一基准电压进行比较输出第二比较信号， 第一比较信号以及第二比较信号 在第三比较器进行比较后输出第三比较信号至输出电路进行控制输出。
优选的， 所述输出电路包括第四比较器， 以及一与所述第四比较器的输出 端耦合的触发器， 所述第三比较信号发送至所述第四比较器上并与一三角波信 号进行比较后输出一触发信号至触发器， 由触发器直接控制电源板的输出。
本发明由于电视控制板提前将 3D信号发送给电源板，使得电源板不需要等 待光源负载的反馈信号而可以提前做好对应的输出调整， 从而使得电源板加快 动态响应的速度。 同时也不会对环路的稳定性造成影响。
【附图说明】
图 1是本发明现有技术中调光系统的框图；
图 2是本发明所述实施例调光系统的框图；
图 3是本发明板实施例所述电源的电路图。
其中： 1、 电源板； 2、 电视控制板； 3、 转换器； 4、 光源； 5、 机芯板。
【具体实施方式】
下面结合附图和较佳的实施例对本发明作进一步说明。
本发明公开一种 3D电视的调光系统及其方法， 作为本实施例一， 如图 2和 图 3所示， 所述的调光系统包括： 电视控制板 2、 由电视控制板 2控制的光源负 载、 为光源负载提供电源的电源板 1 , 所述电视控制板 2与电源板 1直接耦合， 所述电视控制板 2在输出为 3D信号时， 将 3D信号前馈给电源板 1 ; 从图 2可 以看到， 所述的电源板和电视控制板之间设置有用于将 3D信号发送给电源板 1 的电路； 当电视输入的为 3D信号时， 所述的电视控制板 2通过所述的电路将 3D信号发送给电源板 1 , 从而电源板 1就可以提前做出调整， 加快了电源板 1 的动态相应速度。
在本实施例中， 所述电视控制板 2在输出为 3D信号时， 同时将 3D信号发 送给电源板 1及光源负载， 如图 2所示为本发明实施例的调光系统， 所述光源 负载包括光源 4及其转换器 3 ,所述转换器 3与所述电视控制板 2的输出端耦合， 所述电视控制板 2在将 3D信号前馈给电源板 1的同时将 3D信号发送给所述转 换器 3。 转换器 3接收电视控制板 2发送的 3D信号后对光源 4进行调整， 然后 将调整后的调光信号反馈给电源板 1 ,由于所述电视控制板 2与电源板 1直接耦 合， 所述电视控制板 2在输出为 3D信号时， 将 3D信号前馈给电源板 1 , 所以 电源板 1就会提前接收到由电视控制板 2发送的 3D信号，从而就可提前做出调 整进而输出光源 4所需的电压； 而不需要等待接收由转换器 3反馈的调光信号 后再去做出调整。
如图 3 所示为本发明实施例电源板接收输出控制部分的电路图， 所述电源 板包括第一比较器 U1A、 第二比较器 U2B、 第三比较器 U3B以及由第四比较器 U4B、 触发器等组件组成的输出电路， 所述第一比较器 U1A、 第二比较器 U2B 的输出端分别与第三比较器 U3B的输入端耦合，所述第一比较器 U1A的输入端 与所述电视控制板耦合；所述第一比较器 U1A接收所述电视控制板 2发送的 3D 信号并与一基准电压 VREF2进行比较输出第一比较信号，所述第二比较器 U2B 接收所述光源负载的转换器 3反馈的调光信号并与另一基准电压 VREF1进行比 较输出第二比较信号， 第一比较信号以及第二比较信号分别发送至第三比较器 U3B 的两个输入端进行比较后输出第三比较信号至输出电路进行控制输出。 所 述输出电路包括一与所述第三比较器 U3B的输出端耦合的第四比较器 U4B, 以 及一与所述第四比较器 14的输出端耦合的触发器， 所述第三比较信号发送至所 述第四比较器 U4B上并与一三角波信号进行比较后输出一触发信号至触发器， 由触发器直接控制电源板的输出。 在本实施例中， 所述的 3D信号为一高电平 / 氐电平的标只电位。
如图 2和图 3所示， 本发明还公开一种 3D电视调光系统的调光方法， 包括 以下步骤： 电视控制板 2在输出为 3D信号时， 发送 3D信号到光源负载进行调 光； 并将所述 3D信号前馈给电源板 1。 当电视输入的为 3D信号时， 所述的电 视控制板 2通过所述的电路将 3D信号发送给电源板 1 , 从而电源板 1就可以提 前做出调整， 而且加快了电源板 1的动态响应速度。
如图 2所示可看出本实施例 3D电视的调光方法，即当电视控制板在输出为 3D信号时， 同时将该 3D信号发送到光源负载进行调光； 并将所述 3D信号前馈 给电源板， 电源板提前做好调整以符合调节后的负载。
作为本发明的实施例二， 与实施例一的区别在于， 所述电视控制板在输出 为 3D信号时， 电视控制板将 3D信号发送给光源负载前， 就先将 3D信号发送 给电源板。将 3D信号提前发送给电源板可进一步提前使电源板知道光源负载将 要发生的变化， 使电源板提前进行调整， 更进一步的加快了电源板的动态响应 速度。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明， 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干筒单推演或替 换， 都应当视为属于本发明的保护范围。

Claims

权利要求
1、 一种 3D电视的调光系统， 包括：
电视控制板；
由电视控制板控制的光源负载；
为光源负载提供电源的电源板；
所述电视控制板与电源板直接耦合， 所述电视控制板在输出为 3D信号时， 将 3D信号前馈给电源板；
所述电源板包括第一比较器、 第二比较器、 第三比较器以及输出电路， 所 述第一比较器、 第二比较器的输出端分别与第三比较器的输入端耦合， 所述第 一比较器的输入端与所述电视控制板耦合， 所述第三比较器的输出端与所述输 出电路的输入端耦合；
所述输出电路包括一与所述第三比较器的输出端耦合的第四比较器， 以及 一与所述第四比较器的输出端耦合的触发器；
所述光源负载包括光源及其转换器， 所述转换器与所述电视控制板的输出 端耦合， 所述电视控制板在将 3D信号前馈给电源板的同时将 3D信号发送给所 述转换器。
2、 一种 3D电视的调光系统， 包括：
电视控制板；
由电视控制板控制的光源负载；
为光源负载提供电源的电源板；
所述电视控制板与电源板直接耦合， 所述电视控制板在输出为 3D信号时， 将 3D信号前馈给电源板。
3、 如权利要求 2所述的 3D电视的电源系统， 其中， 所述电源板包括第一 比较器、 第二比较器、 第三比较器以及输出电路， 所述第一比较器、 第二比较 器的输出端分别与第三比较器的输入端耦合， 所述第一比较器的输入端与所述 电视控制板耦合， 所述第三比较器的输出端与所述输出电路的输入端耦合。
4、 如权利要求 3所述的 3D电视的电源系统， 其中， 所述输出电路包括一 与所述第三比较器的输出端耦合的第四比较器， 以及一与所述第四比较器的输 出端耦合的触发器。
5、 如权利要求 2所述的 3D电视的电源系统， 其中， 所述光源负载包括光 源及其转换器， 所述转换器与所述电视控制板的输出端耦合， 所述电视控制板 在将 3D信号前馈给电源板的同时将 3D信号发送给所述转换器。
6、 如权利要求 2所述的 3D电视的电源系统， 其中， 所述的 3D信号为一 高电平 氏电平的标识电位。
7、 一种 3D电视的调光方法， 包括以下步骤：
电视控制板在输出为 3D信号时， 发送 3D信号到光源负载进行调光； 并将 所述 3D信号前馈给电源板。
8、 如权利要求 7所述的 3D电视的驱动方法， 其中， 所述电视控制板在输 出为 3D信号时， 同时将 3D信号发送给电源板及光源负载。
9、 如权利要求 7所述的 3D电视的驱动方法， 其中， 所述电视控制板在输 出为 3D信号时， 电视控制板将 3D信号发送给光源负载前， 就先将 3D信号发 送给电源板。
10、 如权利要求 7所述的 3D电视的驱动方法， 其中， 所述电源板包括第一 比较器、 第二比较器、 第三比较器以及输出电路， 所述第一比较器接收所述电 视控制板发送的 3D信号并与一基准电压进行比较后输出第一比较信号，所述第 二比较器接收所述光源负载反馈的反馈信号并与另一基准电压进行比较后输出 第二比较信号， 第一比较信号以及第二比较信号分别发送到第三比较器进行比 较后输出第三比较信号至输出电路进行控制输出。
11、 如权利要求 10所述的 3D电视的驱动方法， 其中， 所述输出电路包括 第四比较器， 以及一与所述第四比较器的输出端耦合的触发器， 所述第三比较 信号发送至所述第四比较器上并与一三角波信号进行比较后输出一触发信号至 触发器， 由触发器直接控制电源板的输出
PCT/CN2012/083491 2012-09-29 2012-10-25 3d电视的调光系统及调光方法 Ceased WO2014047998A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/698,998 US9007366B2 (en) 2012-09-29 2012-10-25 3D TV dimming system and dimming method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210374818.0 2012-09-29
CN201210374818.0A CN102857782B (zh) 2012-09-29 2012-09-29 3d电视的调光系统及调光方法

Publications (1)

Publication Number Publication Date
WO2014047998A1 true WO2014047998A1 (zh) 2014-04-03

Family

ID=47403917

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/083491 Ceased WO2014047998A1 (zh) 2012-09-29 2012-10-25 3d电视的调光系统及调光方法

Country Status (2)

Country Link
CN (1) CN102857782B (zh)
WO (1) WO2014047998A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103259292A (zh) * 2013-05-27 2013-08-21 盖志武 减少迅变负载对电源影响的方法
KR102519570B1 (ko) * 2018-11-12 2023-04-10 삼성디스플레이 주식회사 표시 장치 및 이를 이용한 표시 패널의 구동 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102395230A (zh) * 2011-05-04 2012-03-28 凹凸电子（武汉）有限公司 控制光源调光的控制器和方法及光源驱动电路
CN102510047A (zh) * 2011-11-15 2012-06-20 深圳Tcl新技术有限公司 3d眼镜充放电保护装置
CN102523406A (zh) * 2011-12-07 2012-06-27 青岛海信电器股份有限公司 电源电路结构以及led液晶电视
CN102695074A (zh) * 2012-06-08 2012-09-26 青岛海信电器股份有限公司 三维图像显示方法和三维图像显示装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005101358A1 (ja) * 2004-04-12 2005-10-27 Matsushita Electric Industrial Co., Ltd. プラズマディスプレイパネル表示装置
JP4606502B2 (ja) * 2008-08-07 2011-01-05 三菱電機株式会社 画像表示装置および方法
KR101356248B1 (ko) * 2010-02-19 2014-01-29 엘지디스플레이 주식회사 영상표시장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102395230A (zh) * 2011-05-04 2012-03-28 凹凸电子（武汉）有限公司 控制光源调光的控制器和方法及光源驱动电路
CN102510047A (zh) * 2011-11-15 2012-06-20 深圳Tcl新技术有限公司 3d眼镜充放电保护装置
CN102523406A (zh) * 2011-12-07 2012-06-27 青岛海信电器股份有限公司 电源电路结构以及led液晶电视
CN102695074A (zh) * 2012-06-08 2012-09-26 青岛海信电器股份有限公司 三维图像显示方法和三维图像显示装置

Also Published As

Publication number Publication date
CN102857782A (zh) 2013-01-02
CN102857782B (zh) 2014-12-10

Similar Documents

Publication Publication Date Title
MX2012013502A (es) Dispositivo de control de diodos emisores de luz (led) y aparato de visualizacion de cristal liquido.
CN113299251B (zh) 一种处理器的控制方法及处理器
TWI731587B (zh) 顯示控制方法以及顯示裝置
WO2014075339A1 (zh) 液晶显示时序驱动器
WO2007125804A1 (ja) バックライト制御装置および表示装置
CN114495805A (zh) 用于控制显示面板的设备和方法
JP2017535042A (ja) バックライトユニット及びその駆動方法と、液晶表示装置
CN104124775A (zh) 无线电能传输系统及其智能控制方法、智能控制系统
CN103310740B (zh) 显示装置的影像处理方法及其显示装置
CN115731893B (zh) 面板显示切换电路、面板显示切换方法及显示面板
WO2014047998A1 (zh) 3d电视的调光系统及调光方法
US8680786B2 (en) Method and apparatus for common use of power supply and display apparatus using the same
US20140176021A1 (en) Method and Apparatus for Controlling Light Intensity of Lamp
JP2004258668A (ja) 液晶ディスプレイのバースト・モードの切り換え周波数を調節する方法、および切り換え周波数調節システム
CN102855849A (zh) 一种液晶背光驱动电流控制装置
CN113012650A (zh) 一种背光驱动方法、装置及显示设备
TW201039315A (en) Display control device for flat panel displays and flat display device
US9007366B2 (en) 3D TV dimming system and dimming method
WO2013174119A1 (zh) 背光模组及显示装置
CN100419521C (zh) 液晶显示器
CN117524113A (zh) 显示面板的背光驱动方法、装置及显示设备
KR100674256B1 (ko) 디밍 제어 방법 및 이를 이용하는 조명 시스템
CN101000749A (zh) 能够控制屏幕辉度的lcd及用于控制其辉度的方法
US8981669B2 (en) Lamps and control circuit
CN201138565Y (zh) 一种用于lcd驱动同ccfl驱动锁频的新型电路

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 13698998

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12885191

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12885191

Country of ref document: EP

Kind code of ref document: A1