Electrical pulse counters – pulse dividers – or shift registers: c – Particular transfer means – Including logic circuit
Patent
1986-08-07
1987-07-07
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Particular transfer means
Including logic circuit
377111, 377106, H03K 2340
Patent
active
046792163
ABSTRACT:
A synchronous binary circuit comprising a counter including J-K flip-flops constituting lower l bit stages and higher m bit stages, first logic means for feeding, to J and K input terminals on each of flip-flops among the lower l bit stage flip-flops higher than the second bit stage, an AND of non-inverted outputs of all the lower stage flip-flops than the pertinent stage, second logic means for feeding, to the J and K input terminals of the first stage flip-flops among the higher m bit stage flip-flops, a first logical product of the non-inverted output of a one bit lower stage flip-flop and non-inverted outputs of the first to (l-1)-th bit stage flip-flops among the lower bit stage flip-flops, and third logic means for feeding, to the J and K input terminals of flip-flops among the higher m bit stage flip-flops higher than the second stage, a second logical product of non-inverted outputs of the lower first to (l-1)-th bit stage flip-flops and a third logical product, the third logical product being a logical product of an non-inverted output of a flip-flop lower by one bit than each of the flip-flops lower than the second stage and a fourth logical product, and the fourth logical product being a logical product of non-inverted outputs of flip-flops lower by more than two bit stages in the higher bit stage flip-flops.
REFERENCES:
patent: 3422254 (1969-01-01), Lundin
patent: 3517318 (1970-06-01), McDermond
patent: 4334194 (1982-06-01), Rittenbach
Iida Tetsuya
Ikarashi Takayoshi
Heyman John S.
Kabushiki Kaisha Toshiba
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