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:
Apr. 03, 2001
Filed:
Apr. 04, 1998
Applicant:
Inventors:
Mathew A. Rybicki, Austin, TX (US);
H. Spence Jackson, Austin, TX (US);
Timothy W. Markison, McKinney, TX (US);
Gregg S. Kodra, Austin, TX (US);
Michael A. Margules, Austin, TX (US);
Assignee:
Sigmatel, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M 5/08 ; H03K 7/04 ; H03K 7/08 ;
U.S. Cl.
CPC ...
H03M 5/08 ; H03K 7/04 ; H03K 7/08 ;
Abstract
A method and apparatus for pulse position modulation begins when a digital data stream is received. The encoding process continues by obtaining a set of bits from the digital data stream and modulating the set of bits into a pulse having a pulse width. Next, a transition edge of the pulse is positioned at one of a plurality of time intervals within a time chip based on the set of bits, wherein the pulse width is greater than each of the plurality of time intervals.