Frame detection system

Details Frame detection system Frame detection system

1990-09-27

1992-05-12

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

370106, H04L 706

Patent

active

051134179

ABSTRACT:
A frame detection circuit for SONET which operates in both the OC-3 and OC-12 modes. The frame detection circuit operates by examining the incoming data bit stream, detecting A1 and A2 bytes, and counting three consecutive A1 bytes immediately followed by three consecutive A2 bytes. Since the counters recycle upon reaching a three count, the circuit works for both the OC-3 and OC-12 modes.

REFERENCES:
patent: 3594502 (1971-07-01), Clark
patent: 3662114 (1972-05-01), Clark

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