Circuit with parallel functional circuits with multi-phase...

Details Circuit with parallel functional circuits with multi-phase... Circuit with parallel functional circuits with multi-phase...

2007-12-10

2010-11-23

Le, Don P (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Sequential or with flip-flop

C326S038000, C326S093000

Reexamination Certificate

active

07839168

ABSTRACT:
A circuit has a plurality of functional circuits (100a-f), each with multiphase control inputs. A control circuit drives the inputs for each phase in parallel. The control circuit (120a-c) comprises a chain of one-shot circuits (120a-c), each comprising a bi-stable circuit (121). The bi-stable circuit (121) of a first one-shot circuit in the chain has a set input coupled to the basic control signal input (126), the bi-stable circuits (121) of a remaining or each remaining one-shot circuit (120a-c) in the chain have a set input output of its predecessor in the chain. Each bi-stable circuit (121) has an output coupled to a respective one of the multiphase control outputs (14a-c) and a reset input coupled to the respective one of the multiphase control outputs (14a-c). Loading of the multiphase control outputs (14a-c) by the functional circuits results in a delay of the reset. Thus the pulse durations of the one shot circuits are adapted to the number of functional circuits to ensure sufficient signal development.

REFERENCES:
patent: 3757231 (1973-09-01), Faustini
patent: 3953838 (1976-04-01), Gilbert et al.
patent: 4857906 (1989-08-01), Conner
patent: 5463340 (1995-10-01), Takabatake et al.
patent: 6356117 (2002-03-01), Sutherland et al.
patent: 6989824 (2006-01-01), Ishii et al.
patent: 2003/0108139 (2003-06-01), Jung
patent: 1096506 (2001-05-01), None
patent: 2002006791 (2002-01-01), None

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