公开(公告)号：US5923312A

公开(公告)日：1999-07-13

申请号：US477789

申请日：1995-06-07

申请人： Hisao Okada ,  Yuji Yamamoto ,  Sunao Etou ,  Kuniaki Tanaka

发明人： Hisao Okada ,  Yuji Yamamoto ,  Sunao Etou ,  Kuniaki Tanaka

IPC分类号： G02F1/133 ,  G09G3/20 ,  G09G3/36

CPC分类号： G09G3/2011 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2320/0209

摘要： A driving circuit used in a display apparatus includes a plurality of output circuits for selecting two reference gradation voltages among a plurality of different reference gradation voltages based on display data and outputting an interpolation voltage corresponding to the display data using the two reference gradation voltages; and a plurality of supply lines for supplying the plurality of reference gradation voltages. The supply lines including a plurality of voltage supply lines and a plurality of signal supply lines. One of the plurality of voltage supply lines supplies a voltage having a minimum difference from the voltage of a common electrode of the display apparatus and another of the plurality of voltage supply lines supplies a voltage having a maximum difference from the voltage of the common electrode. The two reference gradation voltages selected by each of the output circuits are supplied by one of a plurality of pairs of supply lines. At least one of the pair has a signal supply line and a supply line having a voltage higher than the signal supply line, and another of the pairs has a signal supply line and a voltage supply line having a voltage lower than the signal supply line.

摘要翻译： 在显示装置中使用的驱动电路包括多个输出电路，用于根据显示数据选择多个不同基准灰度电压中的两个基准灰度电压，并使用两个基准灰度电压输出与显示数据相对应的内插电压; 以及用于提供多个参考灰度电压的多个供给线。 供电线包括多个电压供给线和多条信号供给线。 多个电压供给线路中的一个供给与显示装置的公共电极的电压具有最小差异的电压，并且多个电压供给线路中的另一个提供与公共电极的电压具有最大差异的电压。 由每个输出电路选择的两个参考灰度电压由多对电源线之一提供。 该对中的至少一个具有信号供给线和电源线，该电源线具有比信号供给线高的电压，另一对具有信号供给线和电压低于信号供给线的电压供给线。

公开(公告)号：US5673061A

公开(公告)日：1997-09-30

申请号：US708784

申请日：1996-09-09

申请人： Hisao Okada ,  Yuji Yamamoto ,  Mitsuyoshi Seo ,  Kuniaki Tanaka

发明人： Hisao Okada ,  Yuji Yamamoto ,  Mitsuyoshi Seo ,  Kuniaki Tanaka

IPC分类号： G09G3/20 ,  G09G3/36

CPC分类号： G09G3/3688 ,  G09G2310/027 ,  G09G3/2011 ,  G09G3/2018

摘要： A driving circuit of the invention is used for driving a display apparatus which includes pixels and data lines for applying voltages to the pixels and which displays an image with multiple gray scales in accordance with video data consisting of a plurality of bits. The driving circuit includes: an oscillating signal specifying section for specifying one of a plurality of oscillating signals having respective mean values which are different from each other in accordance with video data consisting of bits selected from the plurality of bits, and for outputting the specified oscillating signal T and an oscillating signal T-bar which is obtained by inverting the specified oscillating signal T; a gray-scale voltage specifying section for producing gray-scale voltage specifying signals which specify a first gray-scale voltage and a second gray-scale voltage among a plurality of gray-scale voltages supplied from a gray-scale voltage supply section, in accordance with video data consisting of bits other than the selected bits of the plurality of bits; and an output section for outputting the first gray-scale voltage and the second gray-scale voltage specified by the gray-scale voltage specifying signals to the data lines, in accordance with the oscillating signal T and the oscillating signal T-bar.

摘要翻译： 本发明的驱动电路用于驱动显示装置，该显示装置包括用于向像素施加电压的像素和数据线，并且根据由多个位组成的视频数据显示具有多个灰度级的图像。 驱动电路包括：振荡信号指定部分，用于根据由从多个位中选择的位组成的视频数据指定具有彼此不同的各个平均值的多个振荡信号中的一个，并输出指定的振荡 信号T和通过反转指定的振荡信号T而获得的振荡信号T-bar; 灰度电压指定部分，用于产生灰度电压指定信号，所述灰度电压指定信号指定从灰度电压提供部分提供的多个灰度电压中的第一灰度电压和第二灰度电压， 其中视频数据由除所述多个比特的所选位之外的比特组成; 以及输出部分，用于根据振荡信号T和振荡信号T-bar将由灰度电压指定信号指定的第一灰度电压和第二灰度电压输出到数据线。

公开(公告)号：US5635950A

公开(公告)日：1997-06-03

申请号：US415668

申请日：1995-04-05

申请人： Hisao Okada ,  Shigeyuki Uehira ,  Katumi Miki ,  Kuniaki Tanaka ,  Toshihiro Yanagi

发明人： Hisao Okada ,  Shigeyuki Uehira ,  Katumi Miki ,  Kuniaki Tanaka ,  Toshihiro Yanagi

IPC分类号： G09G3/20 ,  G09G3/36 ,  H04N3/12

CPC分类号： G09G3/2011 ,  G09G3/2081 ,  G09G3/3688 ,  H04N3/127 ,  G09G2310/027 ,  G09G3/2014

摘要： In a drive circuit for a display apparatus into which a digital video signal is input and in which a plurality of parallel signal electrodes are provided, one of signal voltages having different levels is output in accordance with the digital video signal, or two adjacent ones of said signal voltages are simultaneously output. Alternatively, one of the signal voltages is supplied to a signal electrode in one portion of one output period, and another one of the signal voltages is supplied to the signal electrode in another portion of the output period. The length ratio of the two portions of one output period is appropriately determined according to the digital video signal, whereby an arbitrary voltage corresponding to the video signal data can be applied to the pixel.

摘要翻译： 在其中输入数字视频信号并且其中设置有多个并行信号电极的显示装置的驱动电路中，根据数字视频信号或两个相邻的数字视频信号输出具有不同电平的信号电压之一 所述信号电压同时输出。 或者，信号电压中的一个在一个输出周期的一部分中被提供给信号电极，并且另一个信号电压在输出周期的另一部分中被提供给信号电极。 根据数字视频信号适当地确定一个输出周期的两个部分的长度比，由此可以将对应于视频信号数据的任意电压施加到像素。

公开(公告)号：US5132794A

公开(公告)日：1992-07-21

申请号：US712873

申请日：1991-06-11

申请人： Hisao Okada ,  Kuniaki Tanaka

发明人： Hisao Okada ,  Kuniaki Tanaka

IPC分类号： H04N5/10

CPC分类号： H04N5/10

摘要： The horizontal synchronizing signal separation circuit extracts pulses indicative of horizontal synchronizing timing from a composite synchronizing signal which includes a horizontal synchronizing signal and a vertical synchronizing signal. When detecting the rising edge of the composite synchronizing signal, a rising edge detection circuit generates a pulse signal. A counter counts the number of the pulses in a clock signal. The output of the counter is supplied to a decoder which decodes the output of the counter and outputs timing signals. Using the timing signals, a control signal is generated to control a gate to which the output of the rising edge detection circuit is supplied. The output of the gate is used for generating a separated horizontal synchronizing signal.

公开(公告)号：US5258841A

公开(公告)日：1993-11-02

申请号：US742034

申请日：1991-08-08

申请人： Hisao Okada ,  Kuniaki Tanaka ,  Shigeyuki Uehira

发明人： Hisao Okada ,  Kuniaki Tanaka ,  Shigeyuki Uehira

IPC分类号： H04N5/10 ,  H04N5/08

CPC分类号： H04N5/10

摘要： In a horizontal synchronizing signal separation circuit, from a composite synchronizing signal which includes a horizontal synchronizing signal and a vertical synchronizing signal, a detection signal indicative of detection of a rising edge of the composite synchronizing signal is generated. A gate is provided through which the detection signal is passed in accordance with a control signal. The control signal is a pulse signal having a predetermined pulse width, which is generated by a circuit to which the output of the gate is input. The output of the gate is also supplied to another circuit which generates a separated horizontal synchronizing signal.

公开(公告)号：US5367314A

公开(公告)日：1994-11-22

申请号：US766724

申请日：1991-09-27

申请人： Hisao Okada ,  Kuniaki Tanaka

发明人： Hisao Okada ,  Kuniaki Tanaka

IPC分类号： G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  H04N3/12

CPC分类号： G09G3/2011 ,  G09G3/3688 ,  H04N3/127 ,  G09G2310/027 ,  G09G2310/0297

摘要： A drive circuit for a display apparatus having parallel signal electrodes has at least one voltage selecting circuit, a plurality of signal voltage circuits, one selection signal circuit, and one control signal circuit. The voltage selecting circuit selects one of voltages having different levels in accordance with an input digital video signal. The signal voltage circuits are respectively provided for the signal electrodes, and include two signal lines which are disposed between the voltage selecting circuit and the respective signal electrode. Each of the two signal lines is provided with a input switch, a capacitor and an output switch. The selection signal circuit generates a signal for controlling the two input switches of one of the signal voltage circuits to alternatingly receive a selected voltage from the voltage selecting circuit. The control signal circuit controls the two output switches of the one signal voltage circuit to alternatingly output the voltages toward the respective signal electrode, in an inverted manner with respect to the control of the selection signal circuit.

摘要翻译： 具有并行信号电极的显示装置的驱动电路具有至少一个电压选择电路，多个信号电压电路，一个选择信号电路和一个控制信号电路。 电压选择电路根据输入的数字视频信号选择具有不同电平的电压之一。 信号电压电路分别设置用于信号电极，并且包括设置在电压选择电路和各个信号电极之间的两条信号线。 两个信号线中的每一个都具有输入开关，电容器和输出开关。 选择信号电路产生用于控制信号电压电路之一的两个输入开关的信号，以交替地从电压选择电路接收所选择的电压。 控制信号电路控制一个信号电压电路的两个输出开关相对于选择信号电路的控制以相反的方式交替地向相应的信号电极输出电压。

公开(公告)号：US5686933A

公开(公告)日：1997-11-11

申请号：US316821

申请日：1994-10-03

申请人： Hisao Okada ,  Shigeyuki Uehira ,  Katumi Miki ,  Kuniaki Tanaka ,  Toshihiro Yanagi

发明人： Hisao Okada ,  Shigeyuki Uehira ,  Katumi Miki ,  Kuniaki Tanaka ,  Toshihiro Yanagi

IPC分类号： G09G3/20 ,  G09G3/36 ,  H04N3/12

CPC分类号： G09G3/2011 ,  G09G3/2081 ,  G09G3/3688 ,  H04N3/127 ,  G09G2310/027 ,  G09G3/2014

摘要： In a drive circuit for a display apparatus into which a digital video signal is input and in which a plurality of parallel signal electrodes are provided, one of signal voltages having different levels is output in accordance with the digital video signal, or two adjacent ones of said signal voltages are simultaneously output. Alternatively, one of the signal voltages is supplied to a signal electrode in one portion of one output period, and another one of the signal voltages is supplied to the signal electrode in another portion of the output period. The length ratio of the two portions of one output period is appropriately determined according to a digital video signal, whereby an arbitrary voltage corresponding to the video signal data can be applied to the pixel.

摘要翻译： 在其中输入数字视频信号并且其中设置有多个并行信号电极的显示装置的驱动电路中，根据数字视频信号或两个相邻的数字视频信号输出具有不同电平的信号电压之一 所述信号电压同时输出。 或者，信号电压中的一个在一个输出周期的一部分中被提供给信号电极，并且另一个信号电压在输出周期的另一部分中被提供给信号电极。 根据数字视频信号适当地确定一个输出周期的两个部分的长度比，由此可以对像素应用与视频信号数据相对应的任意电压。

公开(公告)号：US5623278A

公开(公告)日：1997-04-22

申请号：US416645

申请日：1995-04-05

申请人： Hisao Okada ,  Shigeyuki Uehira ,  Katumi Miki ,  Kuniaki Tanaka ,  Toshihiro Yanagi

发明人： Hisao Okada ,  Shigeyuki Uehira ,  Katumi Miki ,  Kuniaki Tanaka ,  Toshihiro Yanagi

IPC分类号： G09G3/20 ,  G09G3/36 ,  H04N3/12

CPC分类号： G09G3/2011 ,  G09G3/2081 ,  G09G3/3688 ,  H04N3/127 ,  G09G2310/027 ,  G09G3/2014

摘要： In a drive circuit for a display apparatus into which a digital video signal is input and in which a plurality of parallel signal electrodes are provided, one of signal voltages having different levels is output in accordance with the digital video signal, or two adjacent ones of said signal voltages are simultaneously output. Alternatively, one of the signal voltages is supplied to a signal electrode in one portion of one output period, and another one of the signal voltages is supplied to the signal electrode in another portion of the output period. The length ratio of the two portions of one output period is appropriately determined according to a digital video signal, whereby an arbitrary voltage corresponding to the video signal data can be applied to the pixel.

公开(公告)号：US5583531A

公开(公告)日：1996-12-10

申请号：US295038

申请日：1994-08-25

申请人： Hisao Okada ,  Takeshi Takarada ,  Tadatsugu Nisitani ,  Toshihiro Yanagi ,  Hirofumi Fukuoka ,  Yoshiharu Kanatani ,  Kuniaki Tanaka

发明人： Hisao Okada ,  Takeshi Takarada ,  Tadatsugu Nisitani ,  Toshihiro Yanagi ,  Hirofumi Fukuoka ,  Yoshiharu Kanatani ,  Kuniaki Tanaka

IPC分类号： G09G3/20 ,  G09G3/36 ,  G02F1/133

CPC分类号： G09G3/2011 ,  G09G3/3648 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2320/0223 ,  G09G3/2014

摘要： A method of driving a display apparatus includes the steps of receiving output requests at a interval and outputting an oscillating voltage to a source line connected to display section, the oscillating voltage including a component which oscillates during one output period of time defined by the output requests.

摘要翻译： 一种驱动显示装置的方法包括以下步骤：以一定间隔接收输出请求，并将振荡电压输出到连接到显示部分的源极线，振荡电压包括在由输出请求定义的一个输出周期期间振荡的分量 。

公开(公告)号：US5245431A

公开(公告)日：1993-09-14

申请号：US742899

申请日：1991-08-08

申请人： Hisao Okada ,  Shigeyuki Uehira ,  Kuniaki Tanaka ,  Katumi Miki ,  Miki Fukuyama

发明人： Hisao Okada ,  Shigeyuki Uehira ,  Kuniaki Tanaka ,  Katumi Miki ,  Miki Fukuyama

IPC分类号： H04N5/10

CPC分类号： H04N5/10

摘要： In a synchronizing signal selection circuit, in response to the input of a vertical synchronizing signal extracted from a composite synchronizing signal, a control signal is generated. The control signal is in a predetermined state during a period which begins when a first predetermined time period has elapsed after the input of the vertical synchronizing signal, and which terminates when a second predetermined time period has elapsed after the input of the vertical synchronizing signal. The composite synchronizing signal is output when the control signal is in the predetermined state, and a horizontal synchronizing signal separated the composite synchronizing signal is output when the control signal is in a state other than the predetermined state.