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    • 5. 发明申请
    • SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    • 半导体集成电路设备
    • US20110193632A1
    • 2011-08-11
    • US13009881
    • 2011-01-20
    • Takahiro KATO
    • Takahiro KATO
    • H03F3/45
    • H03F3/45183H03F2203/45481
    • Disclosed is a semiconductor integrated circuit device that includes a ring oscillator circuit, performs a proper oscillation operation, and expands the range of oscillation frequency variation. The ring oscillator circuit includes, for instance, plural differential amplifier circuits. MOS transistors are respectively added to input nodes of a differential pair of the differential amplifier circuits. Further, gate control circuits are incorporated to control the gates of the MOS transistors, respectively. The gate control circuits cause the MOS transistors to function as an amplitude limiter circuit in mode 3, exercise control to turn off the amplitude limiter circuit in mode 2, and use the amplitude limiter circuit to start oscillation in mode 1.
    • 公开了一种半导体集成电路器件,其包括环形振荡器电路,执行适当的振荡操作,并且扩大振荡频率变化的范围。 环形振荡器电路例如包括多个差分放大器电路。 MOS晶体管分别添加到差分放大器电路的差分对的输入节点。 此外,并入栅极控制电路以分别控制MOS晶体管的栅极。 栅极控制电路使MOS晶体管在模式3中用作限幅电路,在模式2中进行关闭幅度限制电路的运动控制,并且使用限幅电路在模式1中开始振荡。
    • 8. 发明申请
    • SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    • 半导体集成电路设备
    • US20120274408A1
    • 2012-11-01
    • US13546534
    • 2012-07-11
    • Takahiro KATO
    • Takahiro KATO
    • H03K3/03
    • H03F3/45183H03F2203/45481
    • Disclosed is a semiconductor integrated circuit device that includes a ring oscillator circuit, performs a proper oscillation operation, and expands the range of oscillation frequency variation. The ring oscillator circuit includes, for instance, plural differential amplifier circuits. MOS transistors are respectively added to input nodes of a differential pair of the differential amplifier circuits. Further, gate control circuits are incorporated to control the gates of the MOS transistors, respectively. The gate control circuits cause the MOS transistors to function as an amplitude limiter circuit in mode 3, exercise control to turn off the amplitude limiter circuit in mode 2, and use the amplitude limiter circuit to start oscillation in mode 1.
    • 公开了一种半导体集成电路器件,其包括环形振荡器电路,执行适当的振荡操作,并且扩大振荡频率变化的范围。 环形振荡器电路例如包括多个差分放大器电路。 MOS晶体管分别添加到差分放大器电路的差分对的输入节点。 此外,并入栅极控制电路以分别控制MOS晶体管的栅极。 栅极控制电路使MOS晶体管在模式3中用作限幅电路,在模式2中进行关闭幅度限制电路的运动控制,并且使用限幅电路在模式1中开始振荡。
    • 9. 发明申请
    • POWER SUPPLY APPARATUS AND IMAGE FORMING APPARATUS
    • 电源设备和图像形成装置
    • US20120212980A1
    • 2012-08-23
    • US13401535
    • 2012-02-21
    • Takahiro KATOMotonobu HatakeyamaKoji Umetsu
    • Takahiro KATOMotonobu HatakeyamaKoji Umetsu
    • H02M3/335
    • G03G15/5004B41J29/38B41J29/393G03G15/80
    • A power supply apparatus supplies regulated power to an external apparatus. A power switch is turned on to receive AC power and turned off not to receive the AC power. The AC power is rectified by a rectifying section and is switched by a switching section into switched DC power which is smoothed by a rectifying/smoothing section. Upon reception of an alarm signal, the power disconnecting section stops sending the switched DC power to the rectifying/smoothing section. If the AC switch is turned off and then back on again after stopping sending the switched DC power to the smoothing section, the power disconnecting section allows receiving of the AC power only a time after turn-off of the power switch. Upon reception of an auto-off signal indicative of an idle state of the external apparatus, an auto-off section does not send the switched DC power to the rectifying/smoothing section.
    • 电源装置向外部设备供电。 电源开关打开以接收交流电源,并关闭不接收交流电源。 AC电源由整流部分整流,并由开关部分切换成由整流/平滑部分平滑的开关直流电源。 在接收到报警信号时,电源断开部分停止向整流/平滑部分发送切换的直流电源。 如果在停止向平滑部分发送切换的直流电源之后,交流开关被关闭,然后再次接通,则电源断开部分只允许在关闭电源开关后一段时间接收交流电源。 在接收到表示外部设备的空闲状态的自动关闭信号时,自动关闭部分不将切换的直流电力发送到整流/平滑部分。