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. 08, 2005
Filed:
Apr. 17, 2000
Donald C. D. Chang, Thousand Oaks, CA (US);
Kar W. Yung, Torrance, CA (US);
David C. Cheng, Palos Verdes Estates, CA (US);
Frank A. Hagen, Palos Verdes Estates, CA (US);
Ming U. Chang, Rancho Palos Verdes, CA (US);
John I. Novak, Iii, West Hills, CA (US);
Donald C. D. Chang, Thousand Oaks, CA (US);
Kar W. Yung, Torrance, CA (US);
David C. Cheng, Palos Verdes Estates, CA (US);
Frank A. Hagen, Palos Verdes Estates, CA (US);
Ming U. Chang, Rancho Palos Verdes, CA (US);
John I. Novak, III, West Hills, CA (US);
The DIRECTV Group, Inc., El Segundo, CA (US);
Abstract
A novel method and apparatus is described for reducing the number of CDMA codes for a constellation of multiple trasponder platforms serving a number of subscribers in the same service area. A coherent processing technique synchronizes the phase of CDMA signals arriving at a subscriber from multiple trasponder platforms to increase the code capacity and thus the number of possible subscribers for most of the multiple transponder platform systems in current use.