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    • 1. 发明公开
    • Charge device capable of lengthening a lifetime of a storage cell
    • Ladeeinrichtung zurVerlängerungder Gebrauchsdauer einer Speicherzelle。
    • EP0439116A2
    • 1991-07-31
    • EP91100751.6
    • 1991-01-22
    • NEC Corporation
    • Murata, Yukio
    • H02J7/10
    • H02J7/008Y10S320/19
    • In a charge device having a storage cell terminal (11) to be connected to a storage cell (12) to be charged, a trickle charge terminal (13) for receiving a trickle charge voltage, and a boost charge terminal (14) connected to the storage cell terminal for receiving a boost charge voltage and including a constant current circuit (16) for causing a constant current to flow from the trickle charge terminal to the storage cell terminal, a boost charge detector detects the boost charge voltage to produce a boost charge signal when the boost charge terminal is supplied with the boost charge voltage. An interrupting circuit interrupts the constant current when the boost charge detector circuit produces the boost charge signal. The constant current circuit may comprise a transistor (161) having a base electrode supplied with the trickle charge voltage to produce the constant current. In this event, the interrupting circuit is a conductor (191) connected between the boost charge detector and the base electrode of the transistor (161).
    • 在具有要连接到要充电的存储单元(12)的存储单元终端(11)的充电装置中,用于接收涓流充电电压的涓流充电端子(13)和连接到 用于接收升压充电电压的存储单元端子,并且包括用于使恒定电流从涓流充电端子流向存储单元端子的恒流电路(16),升压充电检测器检测升压充电电压以产生升压 当升压充电端子被提供有升压充电电压时的充电信号。 当升压充电检测器电路产生升压充电信号时,中断电路中断恒定电流。 恒流电路可以包括具有提供有涓流充电电压的基极以产生恒定电流的晶体管(161)。 在这种情况下,中断电路是连接在升压电荷检测器和晶体管(161)的基极之间的导体(191)。
    • 2. 发明公开
    • Microphone circuit
    • Mikrophonschaltung。
    • EP0272068A2
    • 1988-06-22
    • EP87310974.8
    • 1987-12-14
    • NEC CORPORATION
    • Murata, Yukio
    • H04M1/60H04M9/08
    • H04M1/605
    • A microphone circuit includes a microphone unit (27) operated by a DC bias voltage for providing a microphone output signal superposed on the DC bias voltage, a constant current source (26) connectable in parallel with the microphone unit, a first control switch for controlling the parallel connection of the constant current source to change the DC bias voltage, and a voltage comparator (24) connected in parallel with the microphone unit for comparing the bias voltage with a predetermined reference voltage to detect the status of the control switch and to provide a control signal.
    • 麦克风电路包括由DC偏置电压操作的麦克风单元(27),用于提供叠加在DC偏置电压上的麦克风输出信号;可与麦克风单元并联连接的恒流源(26);用于控制的第一控制开关 恒流源的并联连接以改变直流偏置电压,以及与麦克风单元并联连接的电压比较器(24),用于将偏置电压与预定参考电压进行比较,以检测控制开关的状态并提供 控制信号。
    • 5. 发明授权
    • Power supply control circuit for use in vehicle equipment
    • 安排车辆设备的进给控制。
    • EP0342049B1
    • 1995-09-13
    • EP89304829.8
    • 1989-05-12
    • NEC CORPORATION
    • Murata, Yukio
    • H04B1/16H04Q7/32
    • H04W52/0254Y02D70/00
    • A power supply control circuit for use in an automobile telephone to which power is supplied in response to a power switch signal and to an ignition voltage. The power switch signal is generated by a power switch in a handset of the telephone. The ignition voltage is produced by turning on an ignition key. The power supply control circuit comprises an emergency switch which manually produces an emergency switch signal. An emergency switch monitor circuit monitors the state of the emergency switch and produces an emergency control signal when it receives the emergency switch signal. Upon the emergency control signal, an ignition voltage control circuit produces the ignition voltage regardless of the condition of the ignition key. Upon the emergency control signal, a power switch control circuit produces the power switch signal regardless of the condition of the power switch. By receiving the ignition voltage from the ignition voltage control circuit and the power switch signal from the power switch control circuit, the automobile telephone can quickly be turned on in an emergency situation.
    • 10. 发明公开
    • Power supply control circuit for use in vehicle equipment
    • 用于车辆设备的电源控制电路
    • EP0342049A3
    • 1991-09-18
    • EP89304829.8
    • 1989-05-12
    • NEC CORPORATION
    • Murata, Yukio
    • H04B1/16H04Q7/32
    • H04W52/0254Y02D70/00
    • A power supply control circuit for use in an automobile telephone to which power is supplied in response to a power switch signal and to an ignition voltage. The power switch signal is generated by a power switch in a handset of the telephone. The ignition voltage is produced by turning on an ignition key. The power supply control circuit comprises an emergency switch which manually produces an emergency switch signal. An emergency switch monitor circuit monitors the state of the emergency switch and produces an emergency control signal when it receives the emergency switch signal. Upon the emergency control signal, an ignition voltage control circuit produces the ignition voltage regardless of the condition of the ignition key. Upon the emergency control signal, a power switch control circuit produces the power switch signal regardless of the condition of the power switch. By receiving the ignition voltage from the ignition voltage control circuit and the power switch signal from the power switch control circuit, the automobile telephone can quickly be turned on in an emergency situation.
    • 一种在汽车电话中使用的电源控制电路,响应于电源开关信号和点火电压而供电的汽车电话。 电源开关信号由电话机的手机中的电源开关产生。 通过打开点火钥匙产生点火电压。 电源控制电路包括手动产生紧急开关信号的紧急开关。 应急开关监控电路监视紧急开关的状态,并在接收到紧急开关信号时产生应急控制信号。 在紧急控制信号中,点火电压控制电路产生点火电压,而与点火钥匙的状况无关。 在紧急控制信号时,电源开关控制电路不管电源开关的状况如何,都会产生电源开关信号。 通过从点火电压控制电路接收到点火电压和来自电源开关控制电路的电源开关信号,汽车电话在紧急情况下可以快速打开。