Media content identification on mobile devices

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United States of America Patent

PATENT NO 11445242
SERIAL NO

16441996

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Abstract

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A mobile device responds in real time to media content presented on a media device, such as a television. The mobile device captures temporal fragments of audio-video content on its microphone, camera, or both and generates corresponding audio-video query fingerprints. The query fingerprints are transmitted to a search server located remotely or used with a search function on the mobile device for content search and identification. Audio features are extracted and audio signal global onset detection is used for input audio frame alignment. Additional audio feature signatures are generated from local audio frame onsets, audio frame frequency domain entropy, and maximum change in the spectral coefficients. Video frames are analyzed to find a television screen in the frames, and a detected active television quadrilateral is used to generate video fingerprints to be combined with audio fingerprints for more reliable content identification.

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Patent Owner(s)

Patent OwnerAddress
ROKU INC1155 COLEMAN AVENUE SAN JOSE CA 95110

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eakins, Daniel H Palo Alto, US 3 8
Merchant, Shashank Sunnyvale, US 141 4592
Pereira, Jose Pio Cupertino, US 99 4233
Ramanathan, Prashant Mountain View, US 46 2371
Stojancic, Mihailo M San Jose, US 89 2225

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