Synchronism error detecting and correcting system for a circulat

Details Synchronism error detecting and correcting system for a circulat Synchronism error detecting and correcting system for a circulat

1973-12-13

1976-11-02

Morrison, Malcolm A.

Telegraphy

Systems

Line-clearing and circuit maintenance

235153AM, 3401461D, 3401725, H04L 700

Patent

active

039898946

ABSTRACT:
A system is disclosed for checking and correcting the synchronism of bits stored in a circulating memory which is part of a PCM switching system. Periodically, bits previously written in an addressable memory are read-out and compared to corresponding bits supplied by the circulating memory. In accordance with results of the comparison, a synchronism signal or a fast or slow correction signal is supplied.

REFERENCES:
patent: 3368203 (1968-02-01), Loizides
patent: 3473150 (1969-10-01), McClelland
patent: 3560924 (1971-02-01), McBride
patent: 3562710 (1971-02-01), Halleck
patent: 3732547 (1973-05-01), Etra
patent: 3733585 (1973-05-01), Merlo

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