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:
Aug. 27, 1985
Filed:
Jul. 26, 1983
Applicant:
Inventors:
John B McNesby, Mesa, AZ (US);
Joseph F Krys, Denver, CO (US);
Assignee:
GTE Communications Products Corporation, Stamford, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
375112 ; 370 84 ; 370102 ;
Abstract
A data rate converter for use in telecommunications inserts supervisory bits into a data stream to increase the data rate, in one application, from 56 kbps to a standard 64 kbps. A standard 64 kbps PCM telephone channel uses 8-bit words for transmission, whereas 56 kbps occupies only 7 bits of an 8 bit word in such a telephone channel. Supervisory bits are inserted at the exact time when the data channel clock signal and the transmission line clock signal are in phase alignment.