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    • 8. 发明授权
    • Photocopy monitoring system and method for monitoring copiers
    • 影印机监控系统及复印机监控方法
    • US5184179A
    • 1993-02-02
    • US739060
    • 1991-07-31
    • Leonard TarrGregory KingBrian Johansen
    • Leonard TarrGregory KingBrian Johansen
    • G03G15/00G03G21/02G05B19/042
    • G05B19/0428G03G15/5079G03G21/02G03G15/55G05B2219/24018G05B2219/24058G05B2219/24072G05B2219/2662
    • A system for monitoring a variable output paper processing device is provided. The monitoring system includes a counter which counts the number of papers processed and provides a count signal for each paper counted. A controller receives the count signals and totals the counts. The controller includes an internal clock as well as an interrupt signal generator. Upon receipt of the count signal, the interrupt generator generates an interrupt signal starting the internal clock. The internal clock has a duration of a predetermined value larger than random noise signals. The controller compares the internal clock signal to the count signal and determines whether a valid count has occurred. The controller includes a CPU and RAM which are coupled by a PAL which isolates the RAM from the CPU when a voltage supplied to the CPU and PAL falls below a predetermined level.
    • 提供了一种用于监视可变输出纸张处理装置的系统。 监控系统包括计数器处理的纸张数量的计数器,并为每个计数的纸张提供计数信号。 控制器接收计数信号并计数。 控制器包括一个内部时钟以及一个中断信号发生器。 接收到计数信号后,中断发生器产生一个启动内部时钟的中断信号。 内部时钟具有比随机噪声信号大的预定值的持续时间。 控制器将内部时钟信号与计数信号进行比较,并确定是否发生了有效计数。 控制器包括CPU和RAM,它们通过PAL连接,当提供给CPU和PAL的电压低于预定电平时,RAM将RAM与CPU隔离。