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:
Feb. 03, 2015
Filed:
Jul. 13, 2011
Applicants:
Vajira Samarasooriya, Ottawa, CA;
Daniel Payer, Rockland, CA;
James S. Wight, Ottawa, CA;
Inventors:
Assignee:
Wi-Lan, Inc., Ottawa, CA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 19/00 (2011.01); G01R 29/26 (2006.01); H04N 17/02 (2006.01); H04B 1/76 (2006.01); H04N 5/50 (2006.01);
U.S. Cl.
CPC ...
H04B 1/76 (2013.01); H04N 5/50 (2013.01);
Abstract
A DTV pilot tone is detected in a noisy environment by computing a power average of Fast Fourier Transform (FFT) output spectra of a received signal, finding a power peak in the averaged outputs, computing an adjustment parameter to center the power peak in a Discrete Fourier Transform bin of the averaged output spectra, applying the adjustment parameter to adjust the received signal, computing a coherent average of FFT output spectra of the adjusted signal, and, testing a power spectrum of the coherent average for the presence of the DTV pilot tone.