| Title of Invention | A METHOD AND APPARATUS FOR EQUALIZING AN AMPLITUDE MODULATED COMPATIBLE DIGITAL BROADCASTING SIGNAL |
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| Abstract | TITLE: A METHOD AND APPARATUS FOR EQUALIZING AN AMPLITUDE MODULATED COMPATIBLE DIGITAL BROADCASTING SIGNAL. A method of equalizing an amplitude modulated compatible digital broadcasting signal comprising an amplitude radio frequency signal having a first frequency spectrum, the amplitude modulated radio frequency signal having a first carrier positioned by an analog program signal,a plurality of digitally modulated carrier signals positioned within a bandwidth which encompasses the first frequency spectrum, a first group of the digitally modulated carrier signals comprising complementary signals and lysing within the first frequency spectrum, and second and third group of the digitally modulated carrier signals comprising non-complementary signals and lying outside of the frist frequency spectrum, said method comprising the steps of producing a first signal representative of in-phase components of the amplitude modulated compatible digital broadcasting signal; producing a second signal representative of quadrature-phase components of the amplitude modulated compatible digital broadcasting signals; using the first and second signals as the real and imaginary inputs to take the fast fourier transform of the first and second signals to produce a plurality of transformed signals representative of frequency domain data; and processing said plurality of transformed signals by an equalization vector comprising a plurality of equalizer coefficients. The equalizer coefficients used for the complementary signals being updated by interpolating coefficients of said vector for the non-complementary signals. |
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in-pct-2001-355-kol-granted-abstract.pdf
in-pct-2001-355-kol-granted-assignment.pdf
in-pct-2001-355-kol-granted-claims.pdf
in-pct-2001-355-kol-granted-correspondence.pdf
in-pct-2001-355-kol-granted-description (complete).pdf
in-pct-2001-355-kol-granted-drawings.pdf
in-pct-2001-355-kol-granted-examination report.pdf
in-pct-2001-355-kol-granted-form 1.pdf
in-pct-2001-355-kol-granted-form 18.pdf
in-pct-2001-355-kol-granted-form 2.pdf
in-pct-2001-355-kol-granted-form 26.pdf
in-pct-2001-355-kol-granted-form 5.pdf
in-pct-2001-355-kol-granted-letter patent.pdf
in-pct-2001-355-kol-granted-reply to examination report.pdf
in-pct-2001-355-kol-granted-specification.pdf
in-pct-2001-355-kol-granted-translated copy of priority document.pdf
| Patent Number | 221169 | ||||||||||||
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| Indian Patent Application Number | IN/PCT/2001/355/KOL | ||||||||||||
| PG Journal Number | 25/2008 | ||||||||||||
| Publication Date | 20-Jun-2008 | ||||||||||||
| Grant Date | 18-Jun-2008 | ||||||||||||
| Date of Filing | 28-Mar-2001 | ||||||||||||
| Name of Patentee | IBIQUITY DIGITAL CORPORATION | ||||||||||||
| Applicant Address | 8865 STANFORD BOULEVARD, COLUMBIA MD 21045 | ||||||||||||
Inventors:
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| PCT International Classification Number | H04H 1/00 | ||||||||||||
| PCT International Application Number | PCT/US99/20277 | ||||||||||||
| PCT International Filing date | 1999-09-02 | ||||||||||||
PCT Conventions:
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