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1.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：US06392619B1
公开(公告)日：2002-05-21
申请号：US09313251
申请日：1999-05-18
IPC分类号： G09G336
CPC分类号： G09G3/3611 , G09G3/3685
摘要： In a data transfer circuit, a hold signal generating circuit generates and outputs a hold signal Hold when transmission data is equal to transmission data one cycle before, and sets a 3-state output buffer for transmission data to high-impedance state, while, in a data reception circuit, when the hold signal Hold is valid, a data reception circuit outputs the reception data held, thereby power consumption in a data bus which is terminated with a terminal resistor is reduced.
摘要翻译： 在数据传输电路中，保持信号发生电路在传输数据等于发送数据之前一个周期产生并输出保持信号Hold，并将发送数据的3状态输出缓冲器设置为高阻抗状态，而在 数据接收电路，当保持信号保持有效时，数据接收电路输出保持的接收数据，从而减少终端电阻终止的数据总线中的功耗。
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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：US06448976B1
公开(公告)日：2002-09-10
申请号：US09044522
申请日：1998-03-19
申请人： Hiroyuki Nitta , Atsuhiro Higa , Masashi Nakamura , Tsutomu Furuhashi , Satoru Tsunekawa , Hiroshi Kurihara
发明人： Hiroyuki Nitta , Atsuhiro Higa , Masashi Nakamura , Tsutomu Furuhashi , Satoru Tsunekawa , Hiroshi Kurihara
IPC分类号： G09G502
CPC分类号： G09G3/3685 , G09G2340/0407 , G09G2340/0485
摘要： A liquid crystal drive circuit, which makes it possible to display low resolution display data on a high resolution liquid crystal panel while expanding and/or centering the display data, is provided. A multiscan control signal is inputted to a latch address control circuit and a data control circuit to control latch signals and the display data so as to latch single pixel data into a plurality of latches at the same time. The display data are latched with the expanding and/or centering operation, and outputted in synchronization with a line clock after being converted to gray scale voltages. Accordingly, it is possible to realize the lateral expansion and/or the centering operation. Further, it is also possible to realize a longitudinal expansion by adding a latch circuit between a latch circuit and a liquid crystal applied voltage generation circuit, and by outputting the data in synchronization with an expanded line clock.
摘要翻译： 提供一种液晶驱动电路，其能够在扩大和/或使显示数据居中的同时在高分辨率液晶面板上显示低分辨率显示数据。 多存储控制信号被输入到锁存地址控制电路和数据控制电路，以控制锁存信号和显示数据，以将单个像素数据同时锁存在多个锁存器中。 显示数据以扩展和/或定心操作被锁存，并且在被转换成灰度级电压之后与行时钟同步地输出。 因此，可以实现横向膨胀和/或定心操作。 此外，还可以通过在锁存电路和液晶施加电压产生电路之间添加锁存电路，并且通过与扩展的线时钟同步地输出数据来实现纵向扩展。
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公开(公告)号：US06549182B2
公开(公告)日：2003-04-15
申请号：US09928424
申请日：2001-08-14
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： A display device for displaying display data including a display panel; a driving circuit which generates a gray-scale voltage corresponding to the display data and outputs the gray-scale voltage to the display panel; a scan driver which scans a line on the display panel to which the gray-scale voltage is output; and a control circuit which outputs the display data to the driving circuit and outputs a display control signal to the scan driver. A gray-scale display characteristic of the display data is changeable between a first state in which a difference in a brightness of the display panel between two adjacent display data values becomes smaller as a display data gray-scale increases, and a second state in which the difference in the brightness of the display panel between two adjacent display data values becomes larger as the display data gray-scale increases.
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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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8.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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