Modular low power gray code counter

Details Modular low power gray code counter Modular low power gray code counter

2011-08-02

2011-08-02

Lam, Tuan (Department: 2816)

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Using particular code or particular counting sequence

Reexamination Certificate

active

07991104

ABSTRACT:
A modular Gray code counter of arbitrary bit length having identical Gray code counter cells in every bit position. Each cell comprises a Toggle Flop and logic which triggers the Toggle Flop and sets the state of the Gray code counter cell. The two outputs of a cell feed two inputs of the next more significant cell. A parity flip-flop provides odd parity, and as a third input to the cell together with the other two inputs determines the state of the cell.

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“Gray counters implementation for direct increment/decrement,” by Siemens AG et al., IP.com, PriorArt Database, Technical Disclosure, Published Sep. 10, 2006, Copyright Infineon Technologies 2006, pp. 1-6.
“Gray counter in VHDL,” ING. IVO VISCOR, Proceedings of the Student FEI 2000, Bmo 2000, pp. 399-401.

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