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:
Sep. 22, 2009
Filed:
Aug. 23, 2006
Methods and apparatus to detect an internally generated signal mode of a local media playback device
Applicant:
Cheuk Wan Chan, Tarpon Springs, FL (US);
Inventor:
Cheuk Wan Chan, Tarpon Springs, FL (US);
Assignee:
The Nielsen Company (US), LLC, Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 60/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatus to detect an internally generated signal mode of a local media playback device are disclosed. A disclosed method comprises tuning a harmonic frequency of a chrominance signal output by a local media playback device, and determining that the local media playback device is in an internally generated signal mode if the measured harmonic frequency exceeds a predetermined threshold.