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. 14, 2000
Filed:
Mar. 27, 1998
Brian William Kroeger, Sykesville, MD (US);
USA Digital Radio Partners, L.P., Linthicum, MD (US);
Abstract
A method of broadcasting digitally encoded information includes the transmission of a plurality of orthogonal frequency division multiplexed sub-carriers. The sub-carriers are modulated by a digitally encoded signal representative of data to be transmitted, with the digitally encoded signal including a plurality of symbols having varying phase and amplitude components. The amplitude modulation can vary between two or more levels. Portions of the digitally encoded signal may be differentially imposed across the sub-carriers. The method also includes receiving the sub-carriers, demodulating the sub-carriers to recover the digitally encoded signal, and decoding the digitally encoded signal.