Counter circuit with automatic reset

Details Counter circuit with automatic reset Counter circuit with automatic reset

1993-12-30

1995-09-26

Heyman, John S.

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

Systems

Identifying or correcting improper counter operation

377107, 377124, H03K 2138, H03K 2140

Patent

active

054540186

ABSTRACT:
A ring counter includes a plurality of latches forming a shift register. A single bit is sequentially clocked through the shift register, so that only one output is active at any time. A logic circuit is connected to the outputs, and monitors the number of outputs which are active. If more than one output should somehow become active at one time, such as during power up, a reset signal is immediately generated to reset a single bit of the counter active. An external reset signal can also be applied to the logic circuit to force a reset of the counter.

REFERENCES:
patent: 3051855 (1962-08-01), Lee
patent: 3530284 (1970-09-01), Wood
patent: 3555249 (1971-01-01), Ahrons
patent: 3613014 (1971-10-01), Moegen
patent: 3639740 (1972-02-01), Escoffier et al.
patent: 4646332 (1987-02-01), Sajor et al.

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