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. 09, 1993
Filed:
Aug. 21, 1992
Hiep Pham, Gaithersburg, MD (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
A .pi./4 differential phase shift encoder that is implemented by simple digital logic circuits or a small number of digital signal processor instructions. The hardware logic circuit which implements .pi./4 differential phase shift encoding first converts a serial input binary data stream with a serial-to-parallel converter into two separate binary sequences. These sequences are then applied to a .pi./4 differential encoder which employs a table lookup to generate the final .pi./4 differential phase shift encoding. The software implementation of the .pi./4 differential phase shift encoding technique generates the phase shift encoded signal using tables of values based on sequences of the input serial binary data stream.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile