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:
Oct. 25, 1983
Filed:
Dec. 18, 1981
Applicant:
Inventors:
Ashfaq R Khan, Glendale Heights, IL (US);
Ivan L Edwards, Downers Grove, IL (US);
Assignee:
GTE Automatic Electric Labs Inc., Northlake, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
375107 ; 375108 ; 307219 ; 307480 ;
Abstract
A clock synchronization system for use in a digital switching system including multiple clock circuits. This circuit includes multiple synchronization circuits connected in a master-slave arrangement. Each synchronization circuit includes a counter chain which provides a periodic system framing pulse and a trigger circuit which insures that its slave system framing pulse is in synchronization with the master system framing pulse.