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    • 1. 发明授权
    • Liquid crystal driving circuit having a common-signal output circuit and a segment-signal output circuit and method
    • 具有公共信号输出电路和段信号输出电路及方法的液晶驱动电路
    • US09041638B2
    • 2015-05-26
    • US13191075
    • 2011-07-26
    • Norikazu KatagiriTetsuya TokunagaMamoru YamaguchiHiroyuki Nakamura
    • Norikazu KatagiriTetsuya TokunagaMamoru YamaguchiHiroyuki Nakamura
    • G09G3/36G09G3/18
    • G09G3/18G09G2310/0267G09G2310/0275
    • A liquid-crystal-driving circuit includes: a plurality of resistors connected in series between a first and second potentials; one or more voltage follower circuits to impedance-convert one or more intermediate potentials between the first and second potentials, to be outputted, respectively, the intermediate potentials generated at one or more connection points between the resistors, respectively; a common-signal-output circuit to supply common signals to common electrodes of a liquid-crystal panel, respectively, the common signals each being at the first and second potentials, and the intermediate potentials; and a segment-signal-output circuit to supply segment signals to segment electrodes of the panel, respectively, the segment signals each being at the first and second potentials, and the intermediate potentials according to the common signals, the segment-signal output circuit to change the potentials of the segment signals in a ramp form, at least if the potentials of the segment signals are changed with a maximum-possible-potential difference.
    • 液晶驱动电路包括:串联连接在第一和第二电位之间的多个电阻器; 一个或多个电压跟随器电路,用于阻抗转换第一和第二电位之间的一个或多个中间电位,分别输出在电阻器之间的一个或多个连接点产生的中间电位; 公共信号输出电路,分别向液晶面板的公共电极提供公共信号,每个共同信号处于第一和第二电位以及中间电位; 以及分段信号输出电路,分别将分段信号提供给面板的分段电极,每个分别处于第一和第二电位的分段信号和根据公共信号的中间电位,分段信号输出电路 至少如果段信号的电位以最大可能电位差改变,则以斜坡形式改变段信号的电位。
    • 2. 发明授权
    • Liquid crystal driving circuit
    • 液晶驱动电路
    • US08941571B2
    • 2015-01-27
    • US13584397
    • 2012-08-13
    • Norikazu KatagiriTetsuya TokunagaTomoshi YoshidaKensuke GotoMamoru Yamaguchi
    • Norikazu KatagiriTetsuya TokunagaTomoshi YoshidaKensuke GotoMamoru Yamaguchi
    • G09G3/36G09G3/04
    • G09G3/3655G09G3/04G09G3/3614G09G3/3696G09G2330/025
    • A liquid-crystal-driving circuit includes: resistors connected in series between first and second potentials lower than the first potential; one or more voltage follower circuits to impedance-convert one or more intermediate potentials between the first and second potentials, to be outputted, respectively, the intermediate potentials generated at one or more connection points between the resistors, respectively; a common-signal-output circuit to supply common signals to common electrodes of a liquid crystal panel, respectively, the common signals being at the first, second, or one or more intermediate potentials in a predetermined order; and a segment-signal output circuit supplies segment signals to segment electrodes of the liquid crystal panel, respectively, the segment signals being at the first and second potentials, or the intermediate potentials according to the common signals, wherein the segment-signal output circuit increases impedances of the segment signals only for a first period when the of segment signals potentials are switched.
    • 液晶驱动电路包括:电阻器,其串联连接在低于第一电位的第一和第二电位之间; 一个或多个电压跟随器电路,用于阻抗转换第一和第二电位之间的一个或多个中间电位,分别输出在电阻器之间的一个或多个连接点产生的中间电位; 公共信号输出电路,分别向液晶面板的公共电极提供公共信号,共同信号处于第一,第二或一个或多个中间电位,以预定顺序; 分段信号输出电路分别将分段信号提供给液晶面板的分段电极,根据公共信号分段信号处于第一和第二电位或中间电位,其中分段信号输出电路增加 段信号的阻抗仅在片段信号电位切换时的第一周期。
    • 4. 发明申请
    • Liquid Crystal Driving Circuit
    • 液晶驱动电路
    • US20120026153A1
    • 2012-02-02
    • US13191075
    • 2011-07-26
    • Norikazu KatagiriTetsuya TokunagaMamoru YamaguchiHiroyuki Nakamura
    • Norikazu KatagiriTetsuya TokunagaMamoru YamaguchiHiroyuki Nakamura
    • G09G5/00G09G3/36
    • G09G3/18G09G2310/0267G09G2310/0275
    • A liquid-crystal-driving circuit includes: a plurality of resistors connected in series between a first and second potentials; one or more voltage follower circuits to impedance-convert one or more intermediate potentials between the first and second potentials, to be outputted, respectively, the intermediate potentials generated at one or more connection points between the resistors, respectively; a common-signal-output circuit to supply common signals to common electrodes of a liquid-crystal panel, respectively, the common signals each being at the first and second potentials, and the intermediate potentials; and a segment-signal-output circuit to supply segment signals to segment electrodes of the panel, respectively, the segment signals each being at the first and second potentials, and the intermediate potentials according to the common signals, the segment-signal output circuit to change the potentials of the segment signals in a ramp form, at least if the potentials of the segment signals are changed with a maximum-possible-potential difference.
    • 液晶驱动电路包括:串联连接在第一和第二电位之间的多个电阻器; 一个或多个电压跟随器电路,用于阻抗转换第一和第二电位之间的一个或多个中间电位,分别输出在电阻器之间的一个或多个连接点产生的中间电位; 公共信号输出电路,分别向液晶面板的公共电极提供公共信号,每个共同信号处于第一和第二电位以及中间电位; 以及分段信号输出电路,分别将分段信号提供给面板的分段电极,每个分别处于第一和第二电位的分段信号和根据公共信号的中间电位,分段信号输出电路 至少如果段信号的电位以最大可能电位差改变,则以斜坡形式改变段信号的电位。
    • 8. 发明授权
    • Display driving circuit for displaying character on display panel
    • 显示面板显示字符显示驱动电路
    • US06246388B1
    • 2001-06-12
    • US09309035
    • 1999-05-10
    • Syuji MotegiHiroyuki AraiTetsuya Tokunaga
    • Syuji MotegiHiroyuki AraiTetsuya Tokunaga
    • G09G336
    • G09G5/222G09G3/04G09G3/20G09G2310/0278
    • For changing the content of a display RAM (38) or an accessory RAM (39), various data SDI, such as an instruction code, address data, display data, is initially transferred to a shift register (11). Then, the display data in the shift register (11) is latched by a latch circuit (62). A write operation is carried out during a period from the completion of a shift operation by the shift register (11) using various data SDI in connection with the current display to the completion of a shift operation using various data SDI in connection with the next display, i.e., a period with an operation enable signal CE remaining at an L or H level. As a result, time allowance for writing is ensured, which contributes to reduction of software processing load by an external device.
    • 为了更改显示RAM(38)或附件RAM(39)的内容,初始地将诸如指令代码,地址数据,显示数据的各种数据SDI传送到移位寄存器(11)。 然后,移位寄存器(11)中的显示数据由锁存电路(62)锁存。 在使用与当前显示相关联的各种数据SDI的移位寄存器(11)完成移位操作期间执行写入操作,使用与下一个显示相关联的各种数据SDI的移位操作完成 ,即具有操作使能信号CE保持在L或H电平的周期。 结果,确保写入的时间容许,这有助于减少外部设备的软件处理负担。
    • 9. 发明授权
    • System for prioritizing slave input register to receive data
transmission via bi-directional data line from master
    • 用于优先从属输入寄存器的系统,用于通过双向数据线从主机接收数据传输
    • US5938746A
    • 1999-08-17
    • US805682
    • 1997-02-25
    • Toshiyuki OzawaShuji MotegiTetsuya Tokunaga
    • Toshiyuki OzawaShuji MotegiTetsuya Tokunaga
    • G06F13/38G06F13/42G06F13/18
    • G06F13/423
    • A master (1) and a slave (3) are connected via a transmission line (5) for sending a clock CL; another transmission line (6) for bidirectionally sending data DT; and still another transmission line (7) for sending a control signal CE. Having turned a control signal CE into "L," the master (1) transmits an address code as data DT to the slave (3). Referring to the content of the transmitted address code, the slave (3) detects whether it is a data transmission from the master (1) to the slave (3) or vice versa. While a control signal CE remains "H," data transmission takes place. Data output from the slave (3) to the data line (6) is managed by a bus driver (22). The bus driver (22) is turned off during a period from when the clock CL became "H" to when a control signal CE becomes "L" after data transmission so that data transmission from the master (1) will not be adversely affected.
    • 主机(1)和从机(3)经由用于发送时钟CL的传输线(5)连接; 用于双向发送数据DT的另一传输线(6); 以及用于发送控制信号CE的又一传输线(7)。 将控制信号CE转换为“L”后,主机(1)将地址码作为数据DT发送到从机(3)。 参照发送的地址码的内容,从机(3)检测是否是从主机(1)到从机(3)的数据传输,反之亦然。 当控制信号CE保持“H”时,发生数据传输。 从总线驱动器(22)管理从从机(3)到数据线(6)的数据输出。 在从时钟CL变为“H”到数据传输之后的控制信号CE变为“L”的期间,总线驱动器(22)被关闭,从而不会对来自主机(1)的数据传输产生不利影响。