Method and apparatus to provide verification of data using a fingerprint
US8176508B2 · kind B2 · utility
7Cited by
11References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2002 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Jan 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/23655
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention verifies the transmission of a data stream, such as an advertisement, to a receiver in a data network, such as a television set in a cable television network. In particular, the present invention develops and stores a data stream fingerprint prior to transmission of the data stream. During transmission of the data stream, a verifier compiles the fingerprint from the transmitted data stream and compares it to the pre-developed and stored fingerprint. If the fingerprint signal characteristics are within predetermined parameters, the transmission is considered successful.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.