The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1976
Filed:
Dec. 13, 1973
Applicant:
Inventors:
Assignee:
International Standard Electric Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
178 / ; 2351 / ; 3401 / ; 3401725 ;
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.