Apparatus for generating a synchronizing signal

Details Apparatus for generating a synchronizing signal Apparatus for generating a synchronizing signal

1994-03-25

1995-09-12

Chin, Stephen

Pulse or digital communications

Systems using alternating or pulsating current

Angle modulation

375365, H04L 700

Patent

active

054504511

ABSTRACT:
A synchronizing signal generating apparatus generates a synchronizing signal from digital data in which a synchronizing signal formed of a fixed data pattern having a predetermined bit number is inserted at a predetermined time interval L. The synchronizing signal generating apparatus is comprised of a delay circuit for obtaining a plurality of digital data having a delay time of n times (n is a positive integer) as long as the predetermined time interval L by delaying the digital data at the unit of the time interval L, a bit shift detector for detecting a phase coincident with the fixed data pattern by delaying the digital data at the bit unit, a plurality of bit shifters for bit-shifting a plurality of digital data outputted from the delay circuit in response to detected result of the bit shift detector, a plurality of synchronizing detectors for detecting whether or not a plurality of digital data bit-shifted by the plurality of the bit shifters and the fixed data pattern are coincident with each other, and a synchronizing signal generating circuit for generating a synchronizing signal in response to an output signal of the synchronizing detectors which detected coincidence between the digital data and the fixed data pattern.

REFERENCES:
patent: 5140618 (1992-08-01), Kinoshita et al.

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