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:
May. 15, 1990
Filed:
Nov. 28, 1988
Applicant:
Inventors:
Po Tong, Alameda, CA (US);
Elwyn R Berlekamp, Piedmont, CA (US);
Robert J Currie, Salt Lake City, UT (US);
Craig K Rushforth, Kaysville, UT (US);
Assignee:
UNISYS Corp., Blue Bell, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q / ; G07F / ;
U.S. Cl.
CPC ...
34082557 ; 341173 ; 371 371 ;
Abstract
Transmitting and receiving apparatus for transmitting data which includes a purged extended Golay (22,7) code encoder at the transmitter for encoding digital data into constant weight unbalanced codewords representative of the digital data. The constant weight unbalanced codewords contain error correction bits and are preferably transmitted as balanced codewords. When the receiver decodes the original digital data, improved tracking and acquisition of the transmitted data is achieved.