Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Counter includes circuit for performing an arithmetic function
Patent
1989-11-03
1991-10-08
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Systems
Counter includes circuit for performing an arithmetic function
377 56, 324 78D, 324 79D, 328140, 307528, G01R 2302, G01R 2310, G06M 300
Patent
active
050561235
ABSTRACT:
The frequency of the signal is determined by counting the period of the signal. A round-off circuit increments the count if the end of the signal occurs after the midpoint between counts.
REFERENCES:
patent: 3549997 (1970-12-01), utzel
patent: 3593166 (1971-07-01), Martin
patent: 3993984 (1976-11-01), Penrod
patent: 4052676 (1977-10-01), Crittenden
patent: 4144489 (1979-03-01), Ward et al.
patent: 4882740 (1989-11-01), Abe et al.
Heyman John S.
Sundstrand Corporation
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