Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Using particular code or particular counting sequence
Patent
1991-10-15
1992-11-17
Miller, Stanley D.
Electrical pulse counters, pulse dividers, or shift registers: c
Systems
Using particular code or particular counting sequence
377 49, G06F 1100
Patent
active
051649683
ABSTRACT:
A nine bit Gray code counter is constructed as a single integrated circuit such as a PLA and comprises D flip-flops, AND gates and Exclusive-OR gates. The array is programmed to provide a nine bit Gray code count at its outputs. The Q output of each flip-flop provides one bit in the Gray code count. The D input to each flip-flop is determined by the significance of the bit and the following equations: D0=A XOR Q0; D1=(A.multidot.Q0) XOR Q1; Dn=(A.multidot. . . . .multidot.Qn-2.multidot.Qn--1) XOR Qn; and Dmsb=(A.multidot.Q0.multidot.Q1.multidot. . . . .multidot.Qmsb-2 XOR Qmsb.
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Loral Aerospace Corp.
Miller Stanley D.
Ouellette Scott A.
Radlo Edward J.
Sueoka Greg T.
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