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    • 3. 发明授权
    • Phase-locked loop circuit and delay-locked loop circuit
    • 锁相环电路和延迟锁定环路电路
    • US06954511B2
    • 2005-10-11
    • US09955071
    • 2001-09-19
    • Hiroshi Tachimori
    • Hiroshi Tachimori
    • H03L7/107H03L7/08H03L7/089H03L7/093H03L7/18H04L000/033
    • H03L7/18H03L7/0891H03L7/0893H03L2207/06
    • A PLL circuit and a DLL circuit able to stabilize a control voltage within a short time after a phase pull-in operation in each cycle of a reference clock. In a phase comparator, the size of a leading phase or a delayed phase of a feedback signal is detected with respect to a reference clock signa, and pulse signals having pulse widths corresponding to the size are output. A current corresponding to the signals is output from a charge pump circuit to a lag-lead filter, and a control voltage obtained by removing noise of the above output is output from a low-pass filter to a voltage-controlled oscillator. Furthermore, through capacitors, pulse signals are superposed on the control voltage, and a sharp waveform is obtained by correcting blunting of the waveform by the low-pass filter. Due to this, the control voltage is stabilized within a short time after a phase pull-in operation in each cycle of the reference clock signal.
    • PLL电路和DLL电路能够在参考时钟的每个周期中的相位拉入操作之后的短时间内稳定控制电压。 在相位比较器中,相对于参考时钟信号检测反馈信号的超前相位或延迟相位的大小,并且输出具有与尺寸对应的脉冲宽度的脉冲信号。 从电荷泵电路向滞后引线滤波器输出与信号对应的电流,通过去除上述输出的噪声而得到的控制电压从低通滤波器输出到压控振荡器。 此外,通过电容器,脉冲信号叠加在控制电压上,并且通过校正低通滤波器的波形钝化来获得尖锐的波形。 由此,在参考时钟信号的每个周期中的相位拉入操作之后,控制电压在短时间内稳定。
    • 4. 发明授权
    • Multi-input differential amplifier circuit
    • 多输入差分放大电路
    • US06388519B1
    • 2002-05-14
    • US09442404
    • 1999-11-18
    • Hiroshi Tachimori
    • Hiroshi Tachimori
    • H03F345
    • H03F3/45183H03F2203/45361H03F2203/45382H03F2203/45392H03F2203/45616H03F2203/45664H03F2203/45674H03F2203/45702H03F2203/45716H03F2203/45722
    • A multi-input differential amplifier circuit capable of maintaining the linear characteristic of the input voltage and the output voltage and capable of enhancing the dynamic range and the linear characteristic. A multi-input differential amplifier circuit configured by forming differential pairs by transistors MI0i, MI1i, (i=1, 2, . . . , n, n is an integer) with gates which are connected to positive and negative input terminals, the drains of the positive side transistors of the differential pairs being connected to the negative output terminals, the drains of the negative side transistor of the differential pairs being connected to the positive output terminals, and the sources of the transistors of the differential pairs being connected via resistors to current sources for supplying operating currents to the differential pair, whereby the dynamic range can be broadened in comparison with a differential amplifier circuit in which source resistors are not connected and whereby enhancement of the linear characteristic and improvement of the operating speed can be realized.
    • 一种能够保持输入电压和输出电压的线性特性并能够增强动态范围和线性特性的多输入差分放大电路。 多输入差分放大器电路通过晶体管MI0i,MI1i,(i = 1,2,...,n,n为整数)形成差分对,配置有连接到正负输入端的栅极,漏极 差分对的正侧晶体管连接到负输出端,差分对的负侧晶体管的漏极连接到正输出端,差分对的晶体管的源极经由电阻器 用于向差分对提供工作电流的电流源,由此与不连接源电阻器的差分放大器电路相比,可以扩大动态范围,从而可以实现线性特性的提高和操作速度的提高。
    • 5. 发明授权
    • Current output drive circuit and display device
    • 电流输出驱动电路和显示装置
    • US07652650B2
    • 2010-01-26
    • US10525203
    • 2003-09-03
    • Yuichi TakagiGenichiro OgaHiroshi Tachimori
    • Yuichi TakagiGenichiro OgaHiroshi Tachimori
    • G09G3/36
    • G09G3/3283G09G2310/027G09G2330/028
    • A circuit having a plurality of driver IC's 101-1 to 101-n provided corresponding to divided areas of a display panel 102, each driver having an output circuit for outputting a supplied reference current IREF as a drive current to corresponding divided areas DRVA1 to DRVAn of the display panel 102 and reference current source circuits 200-1 to 200-n for sampling and holding the reference current input from the reference current input terminal, then supplying the same to the output circuit, the reference current input terminal being connected to the reference current input terminal of another driver by a common current interconnect CML1, and the reference current being distributed to the reference current source circuits of drivers by time division. According to the present invention, luminance steps among drivers driving the display (driven object) by division can be made sufficiently small, and a large size, high dynamic range display organic EL display, which cannot be realized by the conventional method of supply of the reference current, can be realized.
    • 具有与显示面板102的划分区域对应设置的多个驱动IC 101-1〜101-n的电路,每个驱动器具有输出电路,用于将提供的基准电流IREF作为驱动电流输出到对应的分割区域DRVA1〜DRVAn 显示面板102和参考电流源电路200-1〜200-n,用于取样并保持从基准电流输入端子输入的参考电流,然后将其提供给输出电路,参考电流输入端子连接到 通过公共电流互连CML1将另一个驱动器的参考电流输入端子分配,并且参考电流通过时分分配给驱动器的参考电流源电路。 根据本发明,通过划分驱动显示器(驱动对象)的驱动器之间的亮度步骤可以变得足够小,并且大尺寸,高动态范围显示有机EL显示器不能通过传统的方式提供 参考电流,可实现。
    • 7. 发明授权
    • Reference voltage generator
    • 参考电压发生器
    • US06700363B2
    • 2004-03-02
    • US10241721
    • 2002-09-12
    • Hiroshi Tachimori
    • Hiroshi Tachimori
    • G05F316
    • G05F3/242
    • The present invention provides a reference voltage generator capable of operating stably at a low power source voltage, suppressing the increase of a current consumption and providing a stable reference voltage at a high power source voltage, and reducing a layout area. A pMOS transistor, a resistance element, an nMOS transistor, a resistance element and an nMOS transistor are connected in series between a supply line of a power source voltage and a common potential line. The transistors are low threshold voltage transistors, all the transistors are rendered conductive during operation, in the low range of the power source voltage, transistor currents are determined by ON resistances of the transistors, while in the high range of the power source voltage, the transistor currents are determined by the resistance values of the resistance elements, hence it is possible to provide a stable reference voltage at the low power source voltage while suppressing the rapid increase of the current consumption at the high power source voltage.
    • 本发明提供一种能够在低电源电压下稳定运行的基准电压发生器,抑制电流消耗的增加并且在高电源电压下提供稳定的参考电压,并且减小布局面积。 pMOS晶体管,电阻元件,nMOS晶体管,电阻元件和nMOS晶体管串联连接在电源电压的电源线和公共电位线之间。 晶体管是低阈值电压晶体管,所有晶体管在工作期间导通,在电源电压的低范围内,晶体管电流由晶体管的导通电阻决定,而在电源电压的高范围内, 晶体管电流由电阻元件的电阻值确定,因此可以在低电源电压下提供稳定的参考电压,同时抑制高电源电压下的电流消耗的快速增加。
    • 9. 发明申请
    • Current output type driver circuit and display device
    • 电流输出型驱动电路及显示装置
    • US20060017664A1
    • 2006-01-26
    • US10525203
    • 2003-09-03
    • Yuichi TakagiGenichiro OgaHiroshi Tachimori
    • Yuichi TakagiGenichiro OgaHiroshi Tachimori
    • G09G3/30
    • G09G3/3283G09G2310/027G09G2330/028
    • A circuit having a plurality of driver IC's 101-1 to 101-n provided corresponding to divided areas of a display panel 102, each driver having an output circuit for outputting a supplied reference current IREF as a drive current to corresponding divided areas DRVA1 to DRVAn of the display panel 102 and reference current source circuits 200-1 to 200-n for sampling and holding the reference current input from the reference current input terminal, then supplying the same to the output circuit, the reference current input terminal being connected to the reference current input terminal of another driver by a common current interconnect CML1, and the reference current being distributed to the reference current source circuits of drivers by time division. According to the present invention, luminance steps among drivers driving the display (driven object) by division can be made sufficiently small, and a large size, high dynamic range display organic EL display which cannot be realized by the conventional method of supply of the reference current can be realized.
    • 具有对应于显示面板102的分割区域设置的多个驱动器IC 101-1至101-n的电路,每个驱动器具有输出电路,用于将提供的参考电流IREF作为驱动电流输出到相应的分割区域DRVA 1至 显示面板102的DRVAn和参考电流源电路200-1〜200-n,用于采样并保持从参考电流输入端子输入的参考电流,然后将其提供给输出电路,参考电流输入端子连接到 通过公共电流互连CML 1将另一个驱动器的参考电流输入端子分配,并且参考电流通过时分分配给驱动器的参考电流源电路。 根据本发明,通过划分驱动显示器(驱动对象)的驱动器之间的亮度步骤可以做得足够小,并且可以通过传统的参考方法提供不能实现的大尺寸,高动态范围的有机EL显示器 电流可以实现。