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:
Jun. 20, 2017
Filed:
Aug. 06, 2014
The Nielsen Company (Us) Llc, Schaumburg, IL (US);
John C. Peiffer, New Port Richey, FL (US);
The Nielsen Company (US), LLC, New York, NY (US);
Abstract
Methods and apparatus to detect a state of media presentation devices are disclosed. An example state detector includes a detector to identify an operational frequency of a media presentation device to be monitored by the state detector; a frequency selector to, when the operational frequency is greater than a threshold associated with a sampling rate of a component of the state detector, select a first frequency for an oscillator signal, the frequency selector to select the first frequency based on the identified operational frequency; and a status identifier to, when the operational frequency is greater than the threshold, determine a state of the media presentation device based on whether a signal representative of a combination of the oscillator signal and an input received from an audio sensor includes an element greater than a reference value, wherein at least one of the detector, the frequency selector, or the status identifier is implemented via a logic circuit.