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    • 2. 发明授权
    • Liquid crystal display drive circuit
    • 液晶显示驱动电路
    • US08154496B2
    • 2012-04-10
    • US12274645
    • 2008-11-20
    • Yoshiyuki YamagataTetsuya TokunagaYasuo OsawaKensuke Goto
    • Yoshiyuki YamagataTetsuya TokunagaYasuo OsawaKensuke Goto
    • G09G3/36
    • G09G3/18G09G3/04G09G2310/0245G09G2310/06G09G2310/08G09G2330/02
    • This invention offers an LCD drive circuit that prevents conversion to a wrong duty driving state and an unintended display caused by taking in of serial data corresponding to the wrong duty driving state. The LCD drive circuit is provided with an LCD drive signal generation circuit that generates driving signals to turn LCD segments on and off based on serial data received by a serial data receiving circuit and is switchable between a ¼ duty driving state and a ⅓ duty driving state. The LCD drive circuit is also provided with a driving state setting circuit that sets the LCD drive signal generation circuit to the ¼ duty driving state based on identification data when the serial data receiving circuit receives the serial data corresponding to the ¼ duty driving state and thereafter forbids the LCD drive signal generation circuit to take in serial data corresponding to the ⅓ duty driving state when the serial data receiving circuit receives the serial data corresponding to the ⅓ duty driving state.
    • 本发明提供了一种LCD驱动电路,其防止转换为错误的占空比驱动状态,以及通过接收与错误的占空比驱动状态相对应的串行数据而引起的非预期显示。 LCD驱动电路设置有LCD驱动信号发生电路,其根据由串行数据接收电路接收到的串行数据产生驱动信号以使LCD段导通和关断,并且可在¼负载驱动状态和÷占空比驱动状态之间切换 。 LCD驱动电路还设置有驱动状态设置电路,当串行数据接收电路接收到对应于¼占空比驱动状态的串行数据时,基于识别数据将LCD驱动信号发生电路设置为¼占空比驱动状态 禁止LCD驱动信号发生电路在串行数据接收电路接收到与占空比驱动状态相对应的串行数据时,获取对应于三位负荷驱动状态的串行数据。
    • 3. 发明授权
    • Noise-tolerant data communication system
    • 耐噪数据通信系统
    • US08082375B2
    • 2011-12-20
    • US12186149
    • 2008-08-05
    • Tetsuya TokunagaYoshiyuki YamagataYasuo OsawaKensuke Goto
    • Tetsuya TokunagaYoshiyuki YamagataYasuo OsawaKensuke Goto
    • G06F3/00G06F1/12
    • G06F1/12G06F13/4291
    • This invention offers a data communication system that can perform data communication and detection of a data read-in request signal while reducing the number of communication lines to three, and is tolerant of noise. The data communication between a microcomputer and a key scan IC and the detection of the data read-in request signal are performed through a control line, a clock line and a data line. The data communication system is provided with a data line control circuit that controls the data line so that outputting of the data read-in signal RDRQ to the data line is disabled when first command data is inputted to the key scan IC through the data line, and that the outputting of the data read-in request signal RDRQ to the data line is enabled when second command data is inputted from the microcomputer to the key scan IC through the data line.
    • 本发明提供了一种数据通信系统,其可以在将通信线路的数量减少到三个的同时执行数据读取请求信号的数据通信和检测,并且容忍噪声。 通过控制线,时钟线和数据线来执行微型计算机与键扫描IC之间的数据通信以及数据读入请求信号的检测。 数据通信系统设置有数据线控制电路,其控制数据线,使得当通过数据线将第一命令数据输入到键扫描IC时,数据读取信号RDRQ向数据线的输出被禁止, 并且当通过数据线从微型计算机向键扫描IC输入第二命令数据时,能够将数据读入请求信号RDRQ输出到数据线。
    • 4. 发明申请
    • LIQUID CRYSTAL DISPLAY DRIVE CIRCUIT
    • 液晶显示驱动电路
    • US20090140969A1
    • 2009-06-04
    • US12274645
    • 2008-11-20
    • Yoshiyuki YamagataTetsuya TokunagaYasuo OsawaKensuke Goto
    • Yoshiyuki YamagataTetsuya TokunagaYasuo OsawaKensuke Goto
    • G09G3/36
    • G09G3/18G09G3/04G09G2310/0245G09G2310/06G09G2310/08G09G2330/02
    • This invention offers an LCD drive circuit that prevents conversion to a wrong duty driving state and an unintended display caused by taking in of serial data corresponding to the wrong duty driving state. The LCD drive circuit is provided with an LCD drive signal generation circuit that generates driving signals to turn LCD segments on and off based on serial data received by a serial data receiving circuit and is switchable between a ¼ duty driving state and a ⅓ duty driving state. The LCD drive circuit is also provided with a driving state setting circuit that sets the LCD drive signal generation circuit to the ¼ duty driving state based on identification data when the serial data receiving circuit receives the serial data corresponding to the ¼ duty driving state and thereafter forbids the LCD drive signal generation circuit to take in serial data corresponding to the ⅓ duty driving state when the serial data receiving circuit receives the serial data corresponding to the ⅓ duty driving state.
    • 本发明提供了一种LCD驱动电路,其防止转换为错误的占空比驱动状态,以及通过接收与错误的占空比驱动状态相对应的串行数据而引起的非预期显示。 LCD驱动电路配备有LCD驱动信号发生电路,该电路根据串行数据接收电路所接收的串行数据产生驱动信号,使LCD段导通和关断,并且可在1/4负载驱动状态和1/3负载之间切换 驾驶状态 LCD驱动电路还设置有驱动状态设置电路,当串行数据接收电路接收到对应于¼占空比驱动状态的串行数据时,基于识别数据将LCD驱动信号发生电路设置为¼占空比驱动状态 当串行数据接收电路接收到对应于1/3占空比驱动状态的串行数据时,禁止LCD驱动信号发生电路采取对应于1/3占空比驱动状态的串行数据。
    • 5. 发明申请
    • DATA COMMUNICATION SYSTEM
    • 数据通信系统
    • US20090043929A1
    • 2009-02-12
    • US12186149
    • 2008-08-05
    • Tetsuya TOKUNAGAYoshiyuki YamagataYasuo OsawaKensuke Goto
    • Tetsuya TOKUNAGAYoshiyuki YamagataYasuo OsawaKensuke Goto
    • G06F1/12
    • G06F1/12G06F13/4291
    • This invention offers a data communication system that can perform data communication and detection of a data read-in request signal while reducing the number of communication lines to three, and is tolerant of noise. The data communication between a microcomputer and a key scan IC and the detection of the data read-in request signal are performed through a control line, a clock line and a data line. The data communication system is provided with a data line control circuit that controls the data line so that outputting of the data read-in signal RDRQ to the data line is disabled when first command data is inputted to the key scan IC through the data line, and that the outputting of the data read-in request signal RDRQ to the data line is enabled when second command data is inputted from the microcomputer to the key scan IC through the data line.
    • 本发明提供了一种数据通信系统,其可以在将通信线路的数量减少到三个的同时执行数据读取请求信号的数据通信和检测,并且容忍噪声。 通过控制线,时钟线和数据线来执行微型计算机与键扫描IC之间的数据通信以及数据读入请求信号的检测。 数据通信系统设置有数据线控制电路,其控制数据线,使得当通过数据线将第一命令数据输入到键扫描IC时,数据读取信号RDRQ向数据线的输出被禁止, 并且当通过数据线从微型计算机向键扫描IC输入第二命令数据时,能够将数据读入请求信号RDRQ输出到数据线。