Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Particular input circuit
Patent
1984-10-19
1986-11-11
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Systems
Particular input circuit
307440, H03K 2102
Patent
active
046226869
ABSTRACT:
An up/down counter interface converts input information suitable for the operation of one type up/down counter, which type receives input information in the form of a direct current logic signal indicating direction and a train of electric pulses representing increments of information, to input information suitable for the operation of a second type up/down counter, which second type receives input information in the form of two identical pulse trains representing increments of information, direction being determined by the relative displacement in time of the two pulse trains.
REFERENCES:
patent: 3206665 (1965-09-01), Burlingham
patent: 3735347 (1973-05-01), Whitney et al.
patent: 4132905 (1979-01-01), Stein
patent: 4303851 (1981-12-01), Mottier
"Crossover Circuit" by G. A. Maley, IBM Technical Disclosure Bulletin, vol. 7, No. 12, May 1965.
Crozier John H.
Heyman John S.
Ohralik K.
The Superior Electric Company
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