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1. (WO2017151654) METHOD AND SYSTEM FOR DETECTING AND RESPONDING TO CHANGING OF MEDIA CHANNEL

Pub. No.:    WO/2017/151654    International Application No.:    PCT/US2017/020003
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: H04N 21/438
H04N 21/44
Applicants: GRACENOTE, INC.
Inventors: LEE, Jaehyung
LEE, Dewey, Ho
Title: METHOD AND SYSTEM FOR DETECTING AND RESPONDING TO CHANGING OF MEDIA CHANNEL
Abstract:
A computing system receives from a media presentation device a query fingerprint stream representing media content being presented by the media presentation device, where the query fingerprint stream has been determined to represent a first channel. The computing system then detects that a threshold mismatch exists between the received query fingerprint stream and a reference fingerprint stream representing the first channel, thus indicating a likelihood that the media presentation device has transitioned from presenting the first channel to presenting a second channel. Responsive to detecting the threshold mismatch, the system thus discontinues channel-specific action with respect to the first channel. For instance, the system could discontinue superimposing of first-channel-specific content on the presented media content and perhaps start superimposing of second-channel-specific content instead.