Title of Invention

A METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN A DIGITAL AUDIO BROADCASTING SYSTEM

Abstract A method for transmission of data in a digital audio broadcasting system includes the steps of providing a plurality of orthogonal frequency division multiplexed sub-carriers, with the sub-carriers including data sub-carriers and reference sub-carriers, and modulating the data sub-carriers with a digital signal representative of information to be transmitted. The reference sub-carriers are modulated with a sequence of timing bits, wherein the sequence of timing bits includes an unambiguous block synchronization word, and the number of bits comprising the block synchronization word is less than one half of the number of bits in said timing sequence. Then the orthogonal frequency division multiplexed sub-carriers are transmitted. Receivers that differentially detect the block synchronization word and use the block synchronization word to coherently detect the digital signal representative of information to be transmitted are also included.
Full Text

Documents:

IN-PCT-2002-553-KOL-FORM-27.pdf

in-pct-2002-553-kol-granted-abstract.pdf

in-pct-2002-553-kol-granted-assignment.pdf

in-pct-2002-553-kol-granted-claims.pdf

in-pct-2002-553-kol-granted-correspondence.pdf

in-pct-2002-553-kol-granted-description (complete).pdf

in-pct-2002-553-kol-granted-drawings.pdf

in-pct-2002-553-kol-granted-examination report.pdf

in-pct-2002-553-kol-granted-form 1.pdf

in-pct-2002-553-kol-granted-form 18.pdf

in-pct-2002-553-kol-granted-form 2.pdf

in-pct-2002-553-kol-granted-form 26.pdf

in-pct-2002-553-kol-granted-form 3.pdf

in-pct-2002-553-kol-granted-form 5.pdf

in-pct-2002-553-kol-granted-letter patent.pdf

in-pct-2002-553-kol-granted-reply to examination report.pdf

in-pct-2002-553-kol-granted-specification.pdf

in-pct-2002-553-kol-granted-translated copy of priority document.pdf


Patent Number 220296
Indian Patent Application Number IN/PCT/2002/553/KOL
PG Journal Number 21/2008
Publication Date 23-May-2008
Grant Date 21-May-2008
Date of Filing 29-Apr-2002
Name of Patentee IBIQUITY DIGITAL CORPORATION
Applicant Address SUITE 202, 8765 STANFORD BOULEVARD, COLUMBIA MD 21045
Inventors:
# Inventor's Name Inventor's Address
1 KROEGER, BRIAN, WILLIAM 12813 AMBERWOODS WAY, SYKESVILLE, MD 21784
2 BAIRD, JEFFREY, S. 10882 OLDE WOODS WAY, COLUMBIA, MD 21044
PCT International Classification Number H 04 H 1/00
PCT International Application Number PCT/US00/42061
PCT International Filing date 2000-11-10
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 09/438,148 1999-11-10 U.S.A.