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    • 5. 发明授权
    • Image formation apparatus
    • 图像形成装置
    • US09007605B2
    • 2015-04-14
    • US13473804
    • 2012-05-17
    • Kazuya Yamamoto
    • Kazuya Yamamoto
    • G06F3/12H04N1/00G06F15/00
    • H04N1/00952H04N1/00236H04N1/00896H04N2201/0094
    • An image formation apparatus includes an image reading control unit and a print control unit. The print control unit includes: a first communication control unit connected to the image reading control unit; and a power supply control unit configured to control power supply to the image reading control unit. The image reading control unit includes: a second communication control unit connected to the first communication control unit. When completing a process to transition to a power save mode in accordance with an instruction from the print control unit, the image reading control unit cuts off the communications through the second communication control unit. After sending the image reading control unit the instruction to transition to the power save mode, the print control unit detects the cutoff of the communications and then cuts off the power supply to the image reading control unit through the power supply control unit.
    • 图像形成装置包括图像读取控制单元和打印控制单元。 打印控制单元包括:连接到图像读取控制单元的第一通信控制单元; 以及电源控制单元,被配置为控制对所述图像读取控制单元的电力供应。 图像读取控制单元包括:连接到第一通信控制单元的第二通信控制单元。 当完成根据来自打印控制单元的指令转换到省电模式的处理时,图像读取控制单元通过第二通信控制单元切断通信。 在将图像读取控制单元发送到转换到省电模式的指令之后,打印控制单元检测通信的截止,然后通过电源控制单元切断对图像读取控制单元的电源。
    • 8. 发明授权
    • Detector circuit and semiconductor device using same
    • 检测电路和使用其的半导体器件
    • US08558549B2
    • 2013-10-15
    • US12941134
    • 2010-11-08
    • Kazuya YamamotoTomoyuki AsadaMiyo Miyashita
    • Kazuya YamamotoTomoyuki AsadaMiyo Miyashita
    • G01R31/00G01R25/02
    • G01R31/2822G01R23/20H03F3/24H04B1/0475H04B17/103
    • A detector circuit for detecting degradation in the distortion characteristics of a power amplifier based on signals from both ends of a coupled line of a directional coupler. The detector circuit includes a phase shifter/attenuator for phase shifting and attenuating a signal from a coupled terminal of the coupled line, a differential amplifier for outputting difference between an output signal from the phase shifter/attenuator and a signal from the isolated terminal of the coupled line, a wave detector circuit for converting the difference into a DC signal, and a comparing circuit for determining whether the voltage level of the DC signal exceeds a predetermined level. When degradation in the distortion characteristics of the power amplifier arises, the phase shifter/attenuator phase shifts the signal from the coupled terminal and outputs a signal 180° out of phase with the signal from the isolated terminal.
    • 一种用于根据来自定向耦合器的耦合线的两端的信号来检测功率放大器的失真特性的劣化的检测器电路。 检测器电路包括用于相移和衰减来自耦合线的耦合端的信号的移相器/衰减器,用于输出来自移相器/衰减器的输出信号与来自该移相器/衰减器的隔离端的信号的差分放大器 耦合线,用于将差值转换为DC信号的波检测器电路,以及用于确定DC信号的电压电平是否超过预定电平的比较电路。 当功率放大器的失真特性出现降低时,移相器/衰减器将来自耦合端子的信号相移,并输出与隔离端子信号180°异相的信号。