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公开(公告)号：US07336124B2
公开(公告)日：2008-02-26
申请号：US11448669
申请日：2006-06-08
IPC分类号： H03F1/02
CPC分类号： H03F3/45753 , G09G3/3688
摘要： An operational amplifier capable of offset cancel in a shorter period, as well as a line driver capable of shortening one horizontal period and a liquid crystal display device are provided. In the operational amplifier of the invention, a time necessary for feed back control can be shortened than usual by a constitution that an output voltage VO in one horizontal period H1 which is one horizontal period before is defined as a reference voltage in an offset cancel preparatory period HC2, thereby changing the output voltage VO(2) only by the offset voltage VO(2) by the feed back control. In the line driver of the invention, the operational amplifier not used for the output of display data D1 to D6 conducts offset cancel operation and it is successively shifted on every one horizontal period. Since it is no more necessary to incorporate the offset cancel preparatory period in the output period, one horizontal period can be shortened further.
摘要翻译： 提供能够在较短时间内抵消抵消的运算放大器以及能够缩短一个水平周期的线路驱动器和液晶显示装置。 在本发明的运算放大器中，通过将一个水平周期的一个水平周期H 1的输出电压VO定义为偏移消除中的基准电压的结构，可以缩短反馈控制所需的时间 准备期间HC 2，从而仅通过反馈控制将偏置电压VO（2）改变输出电压VO（2）。 在本发明的线驱动器中，未用于显示数据D 1至D 6的输出的运算放大器进行偏移消除操作，并且在每一个水平周期上依次移位。 由于不需要在偏移消除准备期间中包含输出期间，所以可以进一步缩短一个水平周期。
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公开(公告)号：US07081792B2
公开(公告)日：2006-07-25
申请号：US10811431
申请日：2004-03-29
IPC分类号： H03F1/02
CPC分类号： H03F3/45753 , G09G3/3688
摘要： An operational amplifier capable of offset cancel in a shorter period, as well as a line driver capable of shortening one horizontal period and a liquid crystal display device are provided. In the operational amplifier of the invention, a time necessary for feed back control can be shortened than usual by a constitution that an output voltage VO in one horizontal period H1 which is one horizontal period before is defined as a reference voltage in an offset cancel preparatory period HC2, thereby changing the output voltage VO(2) only by the offset voltage VO(2) by the feed back control. In the line driver of the invention, the operational amplifier not used for the output of display data D1 to D6 conducts offset cancel operation and it is successively shifted on every one horizontal period. Since it is no more necessary to incorporate the offset cancel preparatory period in the output period, one horizontal period can be shortened further.
摘要翻译： 提供能够在较短时间内抵消抵消的运算放大器以及能够缩短一个水平周期的线路驱动器和液晶显示装置。 在本发明的运算放大器中，通过将一个水平周期的一个水平周期H 1的输出电压VO定义为偏移消除中的基准电压的结构，可以缩短反馈控制所需的时间 准备期间HC 2，从而仅通过反馈控制将偏置电压VO（2）改变输出电压VO（2）。 在本发明的线驱动器中，未用于显示数据D 1至D 6的输出的运算放大器进行偏移消除操作，并且在每一个水平周期上依次移位。 由于不需要在偏移消除准备期间中包含输出期间，所以可以进一步缩短一个水平周期。
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公开(公告)号：US20050077957A1
公开(公告)日：2005-04-14
申请号：US10811431
申请日：2004-03-29
CPC分类号： H03F3/45753 , G09G3/3688
摘要： An operational amplifier capable of offset cancel in a shorter period, as well as a line driver capable of shortening one horizontal period and a liquid crystal display device are provided. In the operational amplifier of the invention, a time necessary for feed back control can be shortened than usual by a constitution that an output voltage VO in one horizontal period H1 which is one horizontal period before is defined as a reference voltage in an offset cancel preparatory period HC2, thereby changing the output voltage VO(2) only by the offset voltage VO(2) by the feed back control. In the line driver of the invention, the operational amplifier not used for the output of display data D1 to D6 conducts offset cancel operation and it is successively shifted on every one horizontal period. Since it is no more necessary to incorporate the offset cancel preparatory period in the output period, one horizontal period can be shortened further.
摘要翻译： 提供能够在较短时间内抵消抵消的运算放大器以及能够缩短一个水平周期的线路驱动器和液晶显示装置。 在本发明的运算放大器中，通过将一个水平周期的一个水平周期H1的输出电压VO定义为偏移消除准备中的基准电压的结构，可以缩短反馈控制所需的时间 从而通过反馈控制仅偏移电压VO（2）来改变输出电压VO（2）。 在本发明的线路驱动器中，未用于显示数据D1至D6的输出的运算放大器进行偏移消除操作，并且每隔一个水平周期依次移位。 由于不需要在偏移消除准备期间中包含输出期间，所以可以进一步缩短一个水平周期。
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公开(公告)号：US07880537B2
公开(公告)日：2011-02-01
申请号：US12000995
申请日：2007-12-19
IPC分类号： H03F1/02
CPC分类号： H03F3/45753 , G09G3/3688
摘要： An operational amplifier capable of offset cancel in a shorter period, as well as a line driver capable of shortening one horizontal period and a liquid crystal display device are provided. In the operational amplifier of the invention, a time necessary for feed back control can be shortened than usual by a constitution that an output voltage VO in one horizontal period H1 which is one horizontal period before is defined as a reference voltage in an offset cancel preparatory period HC2, thereby changing the output voltage VO(2) only by the offset voltage VO(2) by the feed back control. In the line driver of the invention, the operational amplifier not used for the output of display data D1 to D6 conducts offset cancel operation and it is successively shifted on every one horizontal period. Since it is no more necessary to incorporate the offset cancel preparatory period in the output period, one horizontal period can be shortened further.
摘要翻译： 提供能够在较短时间内抵消抵消的运算放大器以及能够缩短一个水平周期的线路驱动器和液晶显示装置。 在本发明的运算放大器中，通过将一个水平周期的一个水平周期H1的输出电压VO定义为偏移消除准备中的基准电压的结构，可以缩短反馈控制所需的时间 从而通过反馈控制仅偏移电压VO（2）来改变输出电压VO（2）。 在本发明的线路驱动器中，未用于显示数据D1至D6的输出的运算放大器进行偏移消除操作，并且每隔一个水平周期依次移位。 由于不需要在偏移消除准备期间中包含输出期间，所以可以进一步缩短一个水平周期。
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公开(公告)号：US20060226899A1
公开(公告)日：2006-10-12
申请号：US11448669
申请日：2006-06-08
IPC分类号： H03F1/02
CPC分类号： H03F3/45753 , G09G3/3688
摘要： An operational amplifier capable of offset cancel in a shorter period, as well as a line driver capable of shortening one horizontal period and a liquid crystal display device are provided. In the operational amplifier of the invention, a time necessary for feed back control can be shortened than usual by a constitution that an output voltage VO in one horizontal period H1 which is one horizontal period before is defined as a reference voltage in an offset cancel preparatory period HC2, thereby changing the output voltage VO(2) only by the offset voltage VO(2) by the feed back control. In the line driver of the invention, the operational amplifier not used for the output of display data D1 to D6 conducts offset cancel operation and it is successively shifted on every one horizontal period. Since it is no more necessary to incorporate the offset cancel preparatory period in the output period, one horizontal period can be shortened further.
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公开(公告)号：US20080252369A1
公开(公告)日：2008-10-16
申请号：US12000995
申请日：2007-12-19
IPC分类号： H03F1/30
CPC分类号： H03F3/45753 , G09G3/3688
摘要： An operational amplifier capable of offset cancel in a shorter period, as well as a line driver capable of shortening one horizontal period and a liquid crystal display device are provided. In the operational amplifier of the invention, a time necessary for feed back control can be shortened than usual by a constitution that an output voltage VO in one horizontal period H1 which is one horizontal period before is defined as a reference voltage in an offset cancel preparatory period HC2, thereby changing the output voltage VO(2) only by the offset voltage VO(2) by the feed back control. In the line driver of the invention, the operational amplifier not used for the output of display data D1 to D6 conducts offset cancel operation and it is successively shifted on every one horizontal period. Since it is no more necessary to incorporate the offset cancel preparatory period in the output period, one horizontal period can be shortened further.
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公开(公告)号：US06940338B2
公开(公告)日：2005-09-06
申请号：US10706664
申请日：2003-11-12
申请人： Yoshihiro Kizaki , Osamu Kudo , Shinya Udo , Toshihiko Kasai
发明人： Yoshihiro Kizaki , Osamu Kudo , Shinya Udo , Toshihiko Kasai
CPC分类号： G05F3/30
摘要： A bias circuit generates a first voltage at a first node. A second current source generates, according to the first voltage, a power supply current to be supplied to an internal circuit including transistors. A correcting transistor in a correcting circuit supplies the first node with a correcting current generated according to a constant voltage. Because of this, the first voltage is adjusted according to the correcting current. Therefore, the operating speed of the internal circuit is prevented from changing, being dependent on the variation of the threshold voltage and temperature variation of a transistor. As a result, the yield can be improved, independently of the variation of the threshold voltage among semiconductor integrated circuit chips, which occurs in a fabrication process. Further, temperature dependency of the operating speed of the internal circuit can be reduced, which can improve the yield of the semiconductor integrated circuit.
摘要翻译： 偏置电路在第一节点处产生第一电压。 第二电流源根据第一电压产生要提供给包括晶体管的内部电路的电源电流。 校正电路中的校正晶体管向第一节点提供根据恒定电压产生的校正电流。 因此，根据校正电流来调整第一电压。 因此，防止内部电路的工作速度发生变化，这取决于晶体管的阈值电压和温度变化的变化。 结果，与制造过程中发生的半导体集成电路芯片之间的阈值电压的变化无关，可以提高产量。 此外，可以降低内部电路的工作速度的温度依赖性，这可以提高半导体集成电路的产量。
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公开(公告)号：US07696738B2
公开(公告)日：2010-04-13
申请号：US11898690
申请日：2007-09-14
申请人： Toshihiko Kasai , Masatoshi Kokubun , Kenji Kato
发明人： Toshihiko Kasai , Masatoshi Kokubun , Kenji Kato
IPC分类号： G05F1/575
CPC分类号： H02M3/1588 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
摘要： A DC-DC converter reducing reversed current in a low load state and increasing output voltage response speed. An error amplification circuit generates an error signal from the output voltage. A pulse signal generation circuit generates a first pulse signal in accordance with the error signal. A comparison circuit generates a comparison result signal from the error signal. A drive signal generation circuit generates a constant level signal and a second pulse signal. An output circuit receives the first pulse signal and either the constant level signal or the second pulse signal to generate first and second drive signals for driving first and second transistors. The output circuit generates the second drive signal in accordance with the first pulse signal when receiving the constant level signal and generates the second drive signal with the first and second pulse signals when receiving the second pulse signal.
摘要翻译： DC-DC转换器在低负载状态下降低反向电流并提高输出电压响应速度。 误差放大电路从输出电压产生误差信号。 脉冲信号发生电路根据误差信号产生第一脉冲信号。 比较电路产生来自误差信号的比较结果信号。 驱动信号发生电路产生恒定电平信号和第二脉冲信号。 输出电路接收第一脉冲信号和恒定电平信号或第二脉冲信号，以产生用于驱动第一和第二晶体管的第一和第二驱动信号。 当接收到恒定电平信号时，输出电路根据第一脉冲信号产生第二驱动信号，并在接收到第二脉冲信号时产生具有第一和第二脉冲信号的第二驱动信号。
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公开(公告)号：US20080067989A1
公开(公告)日：2008-03-20
申请号：US11898690
申请日：2007-09-14
申请人： Toshihiko Kasai , Masatoshi Kokubun , Kenji Kato
发明人： Toshihiko Kasai , Masatoshi Kokubun , Kenji Kato
IPC分类号： G05F1/44
CPC分类号： H02M3/1588 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
摘要： A DC-DC converter reducing reversed current in a low load state and increasing output voltage response speed. An error amplification circuit generates an error signal from the output voltage. A pulse signal generation circuit generates a first pulse signal in accordance with the error signal. A comparison circuit generates a comparison result signal from the error signal. A drive signal generation circuit generates a constant level signal and a second pulse signal. An output circuit receives the first pulse signal and either the constant level signal or the second pulse signal to generate first and second drive signals for driving first and second transistors. The output circuit generates the second drive signal in accordance with the first pulse signal when receiving the constant level signal and generates the second drive signal with the first and second pulse signals when receiving the second pulse signal.
摘要翻译： DC-DC转换器在低负载状态下降低反向电流并提高输出电压响应速度。 误差放大电路从输出电压产生误差信号。 脉冲信号发生电路根据误差信号产生第一脉冲信号。 比较电路产生来自误差信号的比较结果信号。 驱动信号发生电路产生恒定电平信号和第二脉冲信号。 输出电路接收第一脉冲信号和恒定电平信号或第二脉冲信号，以产生用于驱动第一和第二晶体管的第一和第二驱动信号。 当接收到恒定电平信号时，输出电路根据第一脉冲信号产生第二驱动信号，并在接收到第二脉冲信号时产生具有第一和第二脉冲信号的第二驱动信号。
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10.发明授权DC-DC converter with step-up and step-down control capable of varying the offset voltage of the PWM triangle 有权具有升压和降压控制的DC-DC转换器，能够改变PWM三角形的偏移电压公开(公告)号：US07443147B2
公开(公告)日：2008-10-28
申请号：US11131245
申请日：2005-05-18
申请人： Toshihiko Kasai , Yoshihiro Kizaki , Hidenobu Ito
发明人： Toshihiko Kasai , Yoshihiro Kizaki , Hidenobu Ito
CPC分类号： H02M3/1582 , H02M2001/0025
摘要： When both step-up PWM control and step-down PWM controls are executed, the offset of the ON/OFF switching timing for step-up PWM control and/or the offset of ON/OFF switching timing for step-down PWM control are changed to become identical. By synchronizing ON/OFF switching timing for step-up PWM control and ON/OFF switching timing for step-down PWM control, the loss on switching can be reduced.
摘要翻译： 当执行升压PWM控制和降压PWM控制时，升压PWM控制的ON / OFF开关定时偏移量和/或降压PWM控制的ON / OFF开关时序偏移量都会发生变化 变得相同。 通过同步升压PWM控制的ON / OFF开关定时和降压PWM控制的ON / OFF切换定时，可以减少开关损耗。
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