Method and apparatus to reset a microcomputer by resetting the power
supply
    4.
    发明授权
    Method and apparatus to reset a microcomputer by resetting the power supply 失效
    通过复位电源来复位微型计算机的方法和装置

    公开(公告)号:US5511161A

    公开(公告)日:1996-04-23

    申请号:US158373

    申请日:1993-11-29

    CPC分类号: G06F1/26 G06F1/24

    摘要: The invention provides an interunit communication system which comprises a main unit and a plurality of subunits and executes a communication between the units by a microcomputer of each unit. The system comprises: power producing means, provided for each subunit, for producing a driving power for the microcomputer of the subunit by a power which is supplied from the main unit through a power line; resetting means, provided for each subunit, for resetting the microcomputer of the subunit in the case where the power supply was restarted after the power supply from the main unit had been shut off; detecting means, provided for the main unit, for detecting a runaway of the microcomputer of the subunit on the basis of a reception state from a signal line for communication; power shut-off means, provided for the main unit, for shutting off the power supply to the subunit when the detecting means detects the runaway of the microcomputer; and power restarting means for restarting the power supply to the subunit.

    摘要翻译: 本发明提供了一种互联通信系统,其包括主单元和多个子单元,并且通过每个单元的微计算机执行单元之间的通信。 该系统包括:为每个子单元设置的发电装置,用于通过从主机通过电力线提供的电力产生用于子单元的微型计算机的驱动力; 在从主单元供电之后重新开始电源的情况下,为每个子单元提供的复位装置用于复位子单元的微型计算机; 检测装置,用于根据来自用于通信的信号线的接收状态来检测所述子单元的微型计算机的失控; 用于主单元的电源切断装置,用于在检测装置检测到微型计算机失控时关闭对该子单元的电源; 以及用于重新启动对该子单元的电源的电源重启装置。

    Differential driving circuit for a semiconductor laser
    7.
    发明授权
    Differential driving circuit for a semiconductor laser 失效
    半导体激光器的差分驱动电路

    公开(公告)号:US5818503A

    公开(公告)日:1998-10-06

    申请号:US593902

    申请日:1996-01-30

    摘要: An apparatus for generating a laser beam modulated on the basis of an information signal, which comprises a circuit for generating a first information signal, a circuit for generating a second information signal, independent of the first information signal, a circuit for driving a semiconductor laser on the basis of the first and the second information signals, wherein the driving circuit comprises first and second switching elements which operate supplementarily with each other, one of the first and second switching elements switches a drive current to the semiconductor laser, and wherein the first information signal is provided into a control terminal of the first switching element and the second information signal is provided into a control terminal of the second switching element.

    摘要翻译: 一种用于产生基于信息信号调制的激光束的装置,包括用于产生第一信息信号的电路,用于产生与第一信息信号无关的第二信息信号的电路,用于驱动半导体激光器的电路 基于第一信息信号和第二信息信号,其中驱动电路包括彼此补充地操作的第一和第二开关元件,第一和第二开关元件中的一个将驱动电流切换到半导体激光器,并且其中第一 信息信号被提供到第一开关元件的控制端子中,并且第二信息信号被提供到第二开关元件的控制端子中。

    Power supply circuit for a motor
    9.
    发明授权
    Power supply circuit for a motor 失效
    电机电源电路

    公开(公告)号:US5225751A

    公开(公告)日:1993-07-06

    申请号:US793550

    申请日:1991-11-18

    摘要: In a power supply circuit for a motor in which a power source line can be opened and closed by a first opening-closing device, a construction is adopted which has a electrically controllable second opening-closing device connected in parallel to the first opening-closing device, a comparator for comparing the voltage of the motor load side with a predetermined value, a controller for controlling the opening and closing of the second opening-closing device on the basis of a signal from the comparator, and a current limiter device provided in parallel to the second opening-closing device, whereby a rush current when the first opening-closing device is closed can be suppressed to thereby prevent the fluctuation of the source voltage and the deterioration of the contacts of the first opening-closing device.

    摘要翻译: 在其中电源线能够被第一开闭装置打开和关闭的电动机的电源电路中,采用具有与第一开闭并联连接的电可控制的第二开闭装置的结构 装置,用于将电动机负载侧的电压与预定值进行比较的比较器;控制器,用于根据来自比较器的信号控制第二开闭装置的打开和关闭;以及限流装置, 平行于第二开闭装置,由此能够抑制第一开闭装置闭合时的冲击电流,从而防止源电压的波动和第一开闭装置的触点的劣化。