Semi-fixed circuit

Details Semi-fixed circuit Semi-fixed circuit

2008-07-01

2008-07-01

Jackson, Blane (Department: 2618)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Fourier transform

C370S254000, C375S341000, C375S354000, C455S418000

Reexamination Certificate

active

07394755

ABSTRACT:
A semi-fixed circuit has a plurality of flip flops connectable in series, a first selector and a second selector, and is capable of operations of a plurality of kinds of scrambler and the like. The first selector selects any one of an exclusive OR signal of an input signal and a first feedback signal, the first feedback signal and the input signal, and outputting the result to a first flip flop. The second selector is capable of selecting an exclusive OR signal of an output signal of a second flip flop and a second feedback signal, an output signal of the second flip flop and the second feedback signal, and outputting the result to the first selector as the first feedback signal.

REFERENCES:
patent: 4117541 (1978-09-01), Ali
patent: 6687315 (2004-02-01), Keevill et al.
patent: 63067628 (1988-03-01), None
patent: 63204919 (1988-08-01), None
patent: 04292018 (1992-10-01), None

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