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:
Dec. 09, 2008
Filed:
Dec. 04, 2002
Brian William Kroeger, Sykesville, MD (US);
Branimir Vojcic, Annandale, VA (US);
Raymond L. Pickholtz, Fairfax, VA (US);
Ashruf El-dinary, Clarksville, MD (US);
Brian William Kroeger, Sykesville, MD (US);
Branimir Vojcic, Annandale, VA (US);
Raymond L. Pickholtz, Fairfax, VA (US);
Ashruf El-Dinary, Clarksville, MD (US);
iBiquity Digital Corporation, Columbia, MD (US);
Abstract
A method of digital audio broadcasting comprises the steps of providing a plurality of bits of digital information to be transmitted, forward error correcting the bits of digital information using a combination of pragmatic trellis code modulation and complementary punctured code, and transmitting the bits of digital information. The step of forward error correcting the bits of digital information can comprise the steps of representing the bits as independently coded in-phase and quadrature signals, applying a first error correcting code to the in-phase signals, and applying a second error correcting code to the quadrature signals. The bits of digital information can be arranged in a plurality of partitions of code, wherein first and second ones of the partitions do not overlap, a third one of the partitions overlaps a first portion of the first and second partitions, and a fourth one of the partitions overlaps a second portion of the first and second partitions. Apparatus for transmitting and receiving digital audio broadcasting signals in accordance with the above method are also provided.