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. 15, 2003
Filed:
Dec. 23, 1997
Farbod Kamgar, Campbell, CA (US);
Mariam Motamed, San Francisco, CA (US);
Antoine Jean Rouphael, Tracy, CA (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
In response to an error signal, a pseudo-noise generator ( or ) generates an on-time pseudo-noise signal, an early pseudo-noise signal delayed by less than one-half of a chip interval, and a late pseudo-noise signal advanced by less than one-half of a chip interval. A correlator ( and , or ) correlates a received signal with the early and late pseudo-noise signals to generate the error signal. The combination of the pseudo-noise generator ( or ) and the correlator ( and , or ) creates a loop in which the on-time pseudo-noise signal tracks a received pseudo-noise code more closely than in prior art devices and enables a deinterleave and decode device ( ) within the receiver to demodulate the received signal more effectively.