Method for polling headphones of a passive tv audience meter...

Details Method for polling headphones of a passive tv audience meter... Method for polling headphones of a passive tv audience meter...

H - Electricity

04

H

350/30.5

H04H 9/00 (2006.01)

Patent

CA 1278856

METHOD FOR POLLING HEADPHONES OF A PASSIVE TV AUDIENCE METER SYSTEM ABSTRACT OF THE DISCLOSURE A method for polling headphones of a passive tv audience meter system. Tv audience members wear headphones by which they may receive the audio portion of the tv programs. The headphones are enabled to receive the audio for a short time by periodic polls transmitted by a tv audience meter. The headphones in turn acknowledge to the polls to indicate to the meter which members of the audience are watching tv. The method uses short and long period polls in conjunction with a timer whose period is shorter than the long period poll. The long period poll permits activa- tion of headphone but also prevents adequate audio reception until the headphone acknowledges the poll. The short period poll is entered in response to the receipt of an acknowledgement and permits uninterrupted audio.

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