Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Counter includes circuit for performing an arithmetic function
Patent
1991-10-16
1993-06-22
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Systems
Counter includes circuit for performing an arithmetic function
377 51, 377 54, 328 60, 307265, H03K 302, H03K 2138
Patent
active
052221113
ABSTRACT:
A pulse generator circuit includes an adder, a count register which holds the result of addition provided by the adder in order for the addition-result for recursive addition in the adder, a constant register holding a constant required for making said adder continue to perform count-up/count-down operation until a carry/borrow occurs, a parameter register for applying to said adder a correction value for changing, during a normal count-up/count-down operation, the time when carry/borrow occurs, a selector for selecting one of said constant and parameter registers for applying the value held in the selected register to said adder, and a shift register responsive to a carry/borrow occuring in the addition-result from said adder for shifting the content thereof.
REFERENCES:
patent: 4031376 (1977-06-01), Corkin
patent: 4633183 (1986-12-01), Heatherington
patent: 4805199 (1989-02-01), Muramatsu
patent: 4837791 (1989-06-01), Nakanishi et al.
patent: 4965817 (1990-10-01), Angele
patent: 4969164 (1990-11-01), Mehta et al.
Heyman John S.
Mitsubishi Denki & Kabushiki Kaisha
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