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:
Oct. 26, 2010
Filed:
Jun. 02, 2005
Eric A. Dibiaso, Kokomo, IN (US);
Michael L. Hiatt, Jr., Westfield, IN (US);
Glenn A. Walker, Greentown, IN (US);
Eric A. Dibiaso, Kokomo, IN (US);
Michael L. Hiatt, Jr., Westfield, IN (US);
Glenn A. Walker, Greentown, IN (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
Additional data may be added to the current SDARS satellite signals as a phase and/or amplitude offset from the legacy quadrature phase shift keying (QPSK) modulated data and transmitted by the SDAR terrestrial repeaters. However, in the case where a legacy receiver architecture for a differential modulation system outputs angular/phase differences between carriers, the phase and/or amplitude information appears as distortion to the legacy receiver. The present invention provides a method for optimizing the SDARS infrastructure more efficiently by allowing independent adjustment of the phase and/or amplitude offset () at each terrestrial site. The present invention provides a method for adjusting the performance of each signal together or separately as needed.