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公开(公告)号：US08421829B2
公开(公告)日：2013-04-16
申请号：US13405999
申请日：2012-02-27
CPC分类号： G09G3/3696 , G09G3/2014 , G09G3/2022 , G09G3/3611 , G09G2330/021
摘要： The present invention provides a liquid crystal display controller device and method which provides for a full and/or partial display with good display quality and/or low power consumption based on the scanning period for an active scan line being dependent upon a number of reference clock pulses. Some embodiments of the present invention include one or more of the following features: keeping the frequency substantially constant for different numbers of active scan lines, allowing change of the frequency due to characteristics of the LCD, displaying gradation with near linear effective voltage characteristics, displaying graduation data with lower power, or displaying a partial or full screen in a mobile device, for example, a cell phone.
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公开(公告)号：US20100321423A1
公开(公告)日：2010-12-23
申请号：US12869303
申请日：2010-08-26
申请人： Tsutomu Furuhashi , Takeshi Maeda , Atsuhiro Higa , Hisayuki Ohhara , Hiroshi Kurihara , Naruhiko Kasai
发明人： Tsutomu Furuhashi , Takeshi Maeda , Atsuhiro Higa , Hisayuki Ohhara , Hiroshi Kurihara , Naruhiko Kasai
IPC分类号： G09G5/02
CPC分类号： G09G5/005 , G09G3/3611 , G09G3/3685 , G09G3/3688 , G09G5/003 , G09G5/006 , G09G5/391 , G09G5/393 , G09G5/395 , G09G2310/0205 , G09G2310/027 , G09G2340/0407 , G09G2340/0414 , G09G2340/0421 , G09G2340/0435 , G09G2340/0471 , G09G2340/0478 , G09G2340/0485 , G09G2360/18
摘要： There is provided a liquid crystal display control device which can display pictures in a magnification mode by using only a memory having a low-speed access and a low storage capacity. When a video signal has intermediate resolution or less, the enlargement processing is performed by a frame memory, a line memory and an enlargement processing control circuit. If the input operation and the output operation to and from the frame memory are synchronized with each other, it is sufficient for the frame memory to have a storage capacity of two lines. When the video signal has the same high resolution as a liquid crystal display panel, the video signal is output through a gate circuit to a display timing generating circuit, and it is displayed in a through mode. In this case, no processing is performed by the frame memory or the like.
摘要翻译： 提供了一种液晶显示控制装置，其可以仅使用具有低速存取和低存储容量的存储器来以放大模式显示图像。 当视频信号具有中等分辨率或更小时，放大处理由帧存储器，行存储器和放大处理控制电路执行。 如果与帧存储器的输入操作和输出操作相互同步，则帧存储器具有两行的存储容量就足够了。 当视频信号具有与液晶显示面板相同的高分辨率时，视频信号通过门电路输出到显示定时产生电路，并以直通模式显示。 在这种情况下，帧存储器等不进行处理。
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3.发明授权公开(公告)号：US07852358B2
公开(公告)日：2010-12-14
申请号：US11637093
申请日：2006-12-12
IPC分类号： G09G5/10
CPC分类号： G09G3/3685 , G09G3/3696 , G09G5/395 , G09G2310/027 , G09G2310/0272 , G09G2330/021 , G09G2360/18
摘要： A display device for displaying display data includes a display panel having pixel sections in a matrix form, a scanning circuit which selects a line of the pixel sections, a generation circuit which generates a plurality of gray-scale voltages based on a reference voltage, and a selection circuit which selects a gray-scale voltage corresponding to the display data from the plurality of gray-scale voltages, and outputs the gray-scale voltage thus selected to a pixel section of the display panel. The generation circuit one of increases and decreases a steady-state current of the generation circuit at a second period within one scanning period of the scanning circuit.
摘要翻译： 用于显示显示数据的显示装置包括具有矩阵形式的像素部分的显示面板，选择像素部分的一行的扫描电路，基于参考电压产生多个灰度级电压的生成电路，以及 选择电路，其从所述多个灰度级电压中选择与所述显示数据对应的灰度电压，并将所选择的所述灰度电压输出到所述显示面板的像素部。 该发生电路在扫描电路的一个扫描周期内在第二周期增加和减少发电电路的稳态电流。
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公开(公告)号：US07643042B2
公开(公告)日：2010-01-05
申请号：US11109718
申请日：2005-04-20
申请人： Yasuyuki Kudo , Akihito Akai , Kazuo Okado , Toshimitsu Matsudo , Atsuhiro Higa
发明人： Yasuyuki Kudo , Akihito Akai , Kazuo Okado , Toshimitsu Matsudo , Atsuhiro Higa
CPC分类号： G09G3/2051 , G09G3/2018 , G09G3/2092 , G09G3/3648 , G09G5/02 , G09G2330/021 , G09G2360/18
摘要： A display driver for outputting gradation voltages corresponding to gradation data from an external device to pixels. The display driver includes a generator for generating a plurality of gradation voltages having a plurality of levels based on a reference voltage, and a selector for selecting at least one gradation voltage corresponding to the gradation data from the plurality of gradation voltages generated by the generator. The gradation data includes multi-bits for each color of red, green and blue, and the generator outputs or stops outputting each gradation voltage according to data for color reduction from the external device. The generator stops outputting at least one gradation voltage that is unnecessary for displaying as a result of the color reduction, when the color of the gradation data is reduced according to the data for color reduction.
摘要翻译： 一种用于将对应于来自外部设备的灰度数据的灰度电压输出到像素的显示驱动器。 显示驱动器包括：发生器，用于基于参考电压产生具有多个电平的多个灰度电压;以及选择器，用于从由发生器产生的多个灰度电压中选择与灰度数据相对应的至少一个灰度电压。 灰度数据包括红色，绿色和蓝色的每种颜色的多位，并且发生器根据来自外部设备的色彩还原的数据输出或停止输出每个灰度电压。 当根据用于减色的数据减少灰度数据的颜色时，发生器停止输出作为减色的结果而不必要显示的至少一个灰度电压。
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公开(公告)号：US20070257942A1
公开(公告)日：2007-11-08
申请号：US11776158
申请日：2007-07-11
申请人： Yasuyuki KUDO , Akihito Akai , Kazuo Ookado , Kazunari Kurokawa , Atsuhiro Higa
发明人： Yasuyuki KUDO , Akihito Akai , Kazuo Ookado , Kazunari Kurokawa , Atsuhiro Higa
IPC分类号： G09G5/10
CPC分类号： G09G3/2092 , G09G3/20 , G09G3/2011 , G09G3/3614 , G09G3/3688 , G09G3/3696 , G09G2310/027 , G09G2320/0626 , G09G2320/066 , G09G2320/08 , G09G2330/021 , G09G2330/028 , G09G2360/18 , H03F3/347 , H03F3/45475
摘要： A generation circuit generates gray scale voltages having a plurality of levels for positive polarity and gray scale voltages having a plurality of levels for negative polarity; wherein said generation circuit, in the mode in which the number of colors to be displayed on a display panel is small, decreases a current flowing into an internal circuit which generates a gray scale voltage of an intermediate level other than two gray scale voltages of a gray scale voltage of the most lowest level and a gray scale voltage of the most highest level among the gray scale voltages of said plurality of levels, in comparison to a current flowing in the other mode; and wherein said selection circuit, in the mode in which the number of colors to be displayed on said display panel is small, selects said gray scale voltage according to said display data, from the two gray scale voltages of said most lowest level gray scale voltage and said most highest level gray scale voltage which are generated from said generation circuit.
摘要翻译： 一代电路产生具有多个电平的灰度级电压，所述多个电平具有用于负极性的多个电平的正极性和灰度级电压; 其中所述产生电路在显示面板上要显示的颜色数量小的模式中，减少流入内部电路的电流，该内部电路产生除了两个灰度级电压之外的中间电平的灰度电压 与在另一模式中流动的电流相比，最低电平的灰度电压和所述多个电平的灰度级电压中最高电平的灰度级电压; 并且其中所述选择电路在要显示在所述显示面板上的颜色数量小的模式中，根据所述显示数据从所述最低级灰度级电压的两个灰度级电压中选择所述灰度级电压 并且表示从所述发电电路产生的最高等级的灰度级电压。
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公开(公告)号：US06781605B2
公开(公告)日：2004-08-24
申请号：US10161638
申请日：2002-06-05
申请人： Yasuyuki Kudo , Akihito Akai , Kazuo Ookado , Kazunari Kurokawa , Atsuhiro Higa
发明人： Yasuyuki Kudo , Akihito Akai , Kazuo Ookado , Kazunari Kurokawa , Atsuhiro Higa
IPC分类号： G09G510
CPC分类号： G09G3/2092 , G09G3/20 , G09G3/2011 , G09G3/3614 , G09G3/3688 , G09G3/3696 , G09G2310/027 , G09G2320/0626 , G09G2320/066 , G09G2320/08 , G09G2330/021 , G09G2330/028 , G09G2360/18 , H03F3/347 , H03F3/45475
摘要： A reference voltage generating circuit which generates reference voltages at a plurality of levels, a voltage follower circuit for stabilizing the reference voltages at a plurality of levels and a gray scale voltage generating circuit which generates gray scale voltages at a plurality of levels from the stabilized reference voltages are provided. The voltage follower circuit includes a differential amplifier which receives at one input the reference voltages, first and second buffer circuits connected in parallel to each other, and a resistor. Outputs of the first and second buffer circuits are connected to each other through the resistor, with the output of the first buffer circuit being fed back to the other input of the differential amplifier and the output of the second buffer circuit being connected to serve as an output of the voltage follower circuit.
摘要翻译： 产生多个电平的参考电压的参考电压产生电路，用于稳定多个电平的参考电压的电压跟随器电路和产生来自稳定基准的多个电平的灰度电压的灰度电压产生电路 提供电压。 电压跟随器电路包括差分放大器，其在一个输入端接收参考电压，彼此并联连接的第一和第二缓冲电路以及电阻器。 第一和第二缓冲电路的输出通过电阻相互连接，第一缓冲电路的输出被反馈到差分放大器的另一个输入，第二缓冲电路的输出连接起来作为 输出电压跟随电路。
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7.发明授权Low power consumption data transmission circuit and method, and liquid crystal display apparatus using the same 有权低功耗数据传输电路和方法以及使用其的液晶显示装置公开(公告)号：US06625207B1
公开(公告)日：2003-09-23
申请号：US09408516
申请日：1999-09-30
IPC分类号： H04B138
CPC分类号： H04L25/0272 , H04L25/028 , H04L25/0292
摘要： In a low power consumption data transmission circuit and method, and a liquid crystal display apparatus using the same, 24-bit display data is transmitted from a transceiver circuit to a receiver circuit through a transmission line so that the display data is displayed on a liquid crystal panel. The transceiver circuit has a holding circuit including an 8-stage shift register. The transceiver circuit outputs 24-bit data to the transmission line by use of first and second output circuits when data different from data held in the holding circuit is to be transmitted from the transmission line and outputs data indicative of a hold position in the holding circuit from the second output circuit when the same data as that held in the holding circuit is to be transmitted from the transmission line. When the data indicative of a hold position is transmitted and received, the receiver circuit decodes or restores the received hold position indicating data into 24-bit display data by use of data held in a holding circuit provided in the receiver circuit.
摘要翻译： 在低功耗数据传输电路和方法以及使用该低功耗数据传输电路和方法的液晶显示装置中，通过传输线将24位显示数据从收发器电路传送到接收器电路，使得显示数据显示在液体 水晶面板。 收发电路具有包括8级移位寄存器的保持电路。 当从传输线发送与保持电路中保持的数据不同的数据时，收发器电路通过使用第一和第二输出电路将24位数据输出到传输线，并且在保持电路中输出表示保持位置的数据 当从传输线发送与保持电路中保持的数据相同的数据时，从第二输出电路。 当指示保持位置的数据被发送和接收时，接收器电路通过使用保存在接收器电路中提供的保持电路中的数据来将接收的保持位置指示数据解码或恢复为24位显示数据。
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公开(公告)号：US06275207B1
公开(公告)日：2001-08-14
申请号：US09206986
申请日：1998-12-08
IPC分类号： G09G336
CPC分类号： G09G3/2011 , G09G3/3648 , G09G3/3685 , G09G3/3688 , G09G3/3696 , G09G2310/027 , G09G2320/0276 , G09G2320/0606 , G09G2320/0666
摘要： There are provided a liquid crystal driving circuit and a liquid crystal display device in which the display brightness and color variation to input display data values can be adjusted. Input display data of one line period are taken into a latch circuit (1) with a latch signal output from a latch address control circuit, and latch circuit (1) data are taken into a latch circuit (2) at the timing of a line clock. Further, the latch circuit (2) data are input to a decode circuit. In accordance with set data output from a set register which sets the set register setting data with a set register setting clock, a gray-scale voltage which is matched with data of each pixel is selected and output as a selection voltage from the decode circuit. The selection voltage is buffered in an amplifying circuit, and then a liquid crystal applying voltage is output.
摘要翻译： 提供了一种液晶驱动电路和液晶显示装置，其中可以调节显示亮度和对输入显示数据值的颜色变化。 一个行周期的输入显示数据被从闩锁地址控制电路输出的锁存信号插入到锁存电路（1）中，锁存电路（1）在一个线路的定时将数据送入锁存电路（2） 时钟。 此外，锁存电路（2）的数据被输入到解码电路。 根据从设定寄存器输出的设定数据，设定寄存器设定数据与设定寄存器设定时钟，选择与每个像素的数据相匹配的灰度电压，并从解码电路输出作为选择电压。 选择电压被缓冲在放大电路中，然后输出液晶施加电压。
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公开(公告)号：US20120154465A1
公开(公告)日：2012-06-21
申请号：US13405999
申请日：2012-02-27
CPC分类号： G09G3/3696 , G09G3/2014 , G09G3/2022 , G09G3/3611 , G09G2330/021
摘要： The present invention provides a liquid crystal display controller device and method which provides for a full and/or partial display with good display quality and/or low power consumption based on the scanning period for an active scan line being dependent upon a number of reference clock pulses. Some embodiments of the present invention include one or more of the following features: keeping the frequency substantially constant for different numbers of active scan lines, allowing change of the frequency due to characteristics of the LCD, displaying gradation with near linear effective voltage characteristics, displaying graduation data with lower power, or displaying a partial or full screen in a mobile device, for example, a cell phone.
摘要翻译： 本发明提供了一种液晶显示控制器装置和方法，其基于扫描周期提供具有良好显示质量和/或低功耗的全部和/或部分显示，所述扫描周期取决于多个参考时钟 脉冲。 本发明的一些实施例包括以下特征中的一个或多个：为不同数量的有源扫描线保持频率基本恒定，允许由于LCD的特性而改变频率，显示具有接近线性有效电压特性的灰度，显示 具有较低功率的分级数据，或者在移动设备（例如，蜂窝电话）中显示部分或全屏。
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公开(公告)号：US07227560B2
公开(公告)日：2007-06-05
申请号：US11157063
申请日：2005-06-21
申请人： Yasuyuki Kudo , Akihito Akai , Kazuo Ookado , Kazunari Kurokawa , Atsuhiro Higa
发明人： Yasuyuki Kudo , Akihito Akai , Kazuo Ookado , Kazunari Kurokawa , Atsuhiro Higa
IPC分类号： G09G5/10
CPC分类号： G09G3/2092 , G09G3/20 , G09G3/2011 , G09G3/3614 , G09G3/3688 , G09G3/3696 , G09G2310/027 , G09G2320/0626 , G09G2320/066 , G09G2320/08 , G09G2330/021 , G09G2330/028 , G09G2360/18 , H03F3/347 , H03F3/45475
摘要： A display drive circuit for outputting a gray scale voltage according to display data includes a generation circuit generating gray scale voltages of a plurality of levels, and a selection circuit which selects a gray scale voltage according to the display data. When the number of colors to be displayed is small, the generation circuit decreases a current flowing into an internal circuit which generates a gray scale voltage of an intermediate level other than two gray scale voltages of a gray scale voltage of the most lowest level and a gray scale voltage of the most highest level among the gray scale voltages of the plurality of levels, and the selection circuit selects the gray scale voltage according to the display data from the most lowest level gray scale voltage and the most highest level gray scale voltage which are generated.
摘要翻译： 用于根据显示数据输出灰度级电压的显示驱动电路包括产生多个电平的灰度级电压的产生电路和根据显示数据选择灰度级电压的选择电路。 当要显示的颜色数量小时，生成电路减少流入内部电路的电流，该内部电路生成除了最低级别的灰度级电压的两个灰度级电压之外的中间电平的灰度级电压，以及 多个电平的灰度级电压中最高电平的灰度级电压，并且选择电路根据最低电平灰度级电压和最高电平灰度级电压的显示数据选择灰度级电压，其中 被生成。
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