Bit-pattern detector

Details Bit-pattern detector Bit-pattern detector

1996-08-02

1998-05-05

Ghebretinsae, Temesghen

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

375342, 36471511, H04L 700

Patent

active

057486883

ABSTRACT:
A bit pattern detector for detecting a bit pattern in a parallel bitstream input includes left and right matching units for detecting bits in the bitstream input that match the bit pattern. The left matching unit outputs a plurality of signals to an adder, a multiplexer, and a pattern detector, depending on whether and how many matching bits are detected in the bitstream input. The right matching unit also outputs a signal to the adder. The pattern detector outputs a detection signal depending on the input from the left matching unit and the adder, and also outputs a control signal to the multiplexer. The multiplexer selects and outputs a signal from amongst the signals received thereby from the left matching unit and a size signal corresponding to a size of the bitstream input. The detector also may include a bit pattern register which stores the bit pattern and provides it to the left and right matching units, and a bit number register for storing the signal received from the right matching unit.

REFERENCES:
patent: 4730346 (1988-03-01), Jiang
patent: 4734676 (1988-03-01), Huon et al.
patent: 4829462 (1989-05-01), Freeman et al.
patent: 5343540 (1994-08-01), Mitani
patent: 5459754 (1995-10-01), Newby et al.
patent: 5461633 (1995-10-01), Kitamura

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