Monitoring audio-visual content with captions
US10091543B2 · kind B2 · utility
3Cited by
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19Claims
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Key dates
| Filing date | Apr 17, 2017 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Apr 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To monitor audio-visual content which includes captions, caption fingerprints are derived from a length of each word in the caption, without regard to the identity of the character or characters forming the word. Audio-visual content is searched to identify a caption event having a matching fingerprint and missing captions; caption timing errors and caption discrepancies are measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.