Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Determining machine or apparatus operating time or...
Patent
1995-07-28
1996-10-22
Wambach, Margaret Rose
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Determining machine or apparatus operating time or...
377 39, 327292, G07C 302
Patent
active
055685293
ABSTRACT:
A signal disconnection detection apparatus includes a first counter, a first comparator, and a detector. The first counter is reset by a pulse signal received every predetermined period of a clock signal, and counts a clock signal transmitted together with data. The first comparator compares a count value of the first counter with a set value larger than the number of clock signals included in one period of the pulse signal, and stops an operation of the first counter when the count value of the first counter exceeds the set value. The detector detects that the count value of the first counter does not continuously change within a predetermined period of time to output a signal disconnection detection signal of at least one of the clock signal and the pulse signal.
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NEC Corporation
Wambach Margaret Rose
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