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. 06, 1984
Filed:
Feb. 11, 1982
Applicant:
Inventor:
Jean-Pierre Adoul, Sherbrooke, CA;
Assignee:
Universite de Sherbrooke, , CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L / ; H03K / ; H04B / ;
U.S. Cl.
CPC ...
381 31 ; 3403 / ; 375122 ;
Abstract
Bit rate in a PCM Companding system is reduced by transmitting sample magnitude (X.sub.n) if the sample is near a zero-crossing, and transmitting the difference (D.sub.n) between sequential samples if not near a zero-crossing. ROMs are used for mapping (transforming) full versus reduced data.
Adoul, Jean-Pierre. (1984). Apparatus and method of reducing the bit rate of pcm speech (U.S. Patent No. 4481659). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4481659
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile