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1. 发明授权

US4860230A Signal recognition system 失效
标题翻译：信号识别系统
公开(公告)号：US4860230A
公开(公告)日：1989-08-22
申请号：US99706
申请日：1987-09-21
申请人： Daniel Sallaerts , Michel C. A. R. Rahier
发明人： Daniel Sallaerts , Michel C. A. R. Rahier
IPC分类号： H04Q3/72 , G01R19/165 , G01R29/027 , H04M3/02 , H04M3/22
CPC分类号： G01R19/16557 , G01R29/0273
摘要： A signal persistence time interval recognition system reproduces a condition of an input signal as a condition of an output signal only when the input signal condition persists for at least a predetermined time interval. The system periodically scans the input signal condition and has a first memory (ROM) for storing a start value indicative of the time interval. A second memory (RAM) stores a value indicative of the time counted since the detection of a difference between the input and output signal conditions. A third memory stores the output signal condition and a processor brings the start value from the first memory into the second memory when no difference is detected. The processor modifies the value in the second memory each time such a difference is detected and until a value is reached indicating that the time interval has been counted, the output signal condition in the third memory being then changed. The first memory only stores a single start value for all conditions of the input signal and the processor perform the modification in the second memory independently of the first memory.
摘要翻译：信号持续时间间隔识别系统仅在输入信号条件持续至少预定的时间间隔时才将输入信号的条件再现为输出信号的条件。系统周期性地扫描输入信号条件，并具有用于存储指示时间间隔的起始值的第一存储器（ROM）。第二存储器（RAM）存储指示从检测到输入和输出信号条件之间的差值开始计数的时间的值。第三存储器存储输出信号条件，并且当没有检测到差异时，处理器将起始值从第一存储器引入第二存储器。处理器每当检测到这种差异时修改第二存储器中的值，并且直到达到指示时间间隔已被计数的值，则第三存储器中的输出信号条件随后改变。第一存储器仅存储输入信号的所有条件的单个起始值，并且处理器独立于第一存储器执行第二存储器中的修改。

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