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:
Feb. 15, 1994
Filed:
Mar. 09, 1992
Applicant:
Inventor:
Stephen P Ferguson, Coventry, GB;
Assignee:
GPT Limited, , GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370 55 ; 370 161 ; 3701001 ;
Abstract
A data transmission system in which multiplex data is created in accordance with the Synchronous Digital Hierarchy standard includes an add-drop multiplex having a switch across which data streams are switched between a pair of multiplexers and each input and output for a stream has a rejustifier circuit the timing of which is extracted from a timing extract from the other side of the switch.