Detection of media links in broadcast signals

Details Detection of media links in broadcast signals Detection of media links in broadcast signals

H - Electricity

04

H

H04H 60/35 (2008.01) H04H 20/93 (2008.01) H04L 12/16 (2006.01) H04N 7/025 (2006.01)

Patent

CA 2293957

A detection apparatus includes a tuner tuned to the program and a meter coupled to the tuner and arranged to detect content ancillary information from the program tuned by the tuner. The content ancillary information may be a media link, closed captioning information, or the like. The meter may also be arranged to extract a broadcast signature from the program. A comparator compares the broadcast signature to a reference signature selected from a library of reference signatures based upon the content ancillary information. Broadcast signatures from unknown programs may be clustered at least partially on the basis of the content ancillary information.

L'invention se rapporte à un appareil de détection comprenant un syntoniseur accordé au programme et un compteur couplé au syntoniseur et conçu de manière à détecter des informations secondaires de contenu issues du programme accordé par le syntoniseur. Les informations secondaires de contenu peuvent être une liaison média, des informations de sous- titrage codées, ou autres similaires. Ce compteur peut être également conçu de manière à extraire une signature de radiodiffusion du programme. Un comparateur compare les signatures de radiodiffusion avec un signature de référence choisie dans une bibliothèque de signatures de référence en fonction des informations secondaires de contenu. Des signatures de radiodiffusion issues de programmes inconnus peuvent être au moins en partie regroupées selon les informations secondaires de contenu.

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