Methods and apparatus for identifying a digital audio signal
US7742737B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2002 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Feb 28, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H2201/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for identifying broadcast digital audio signals include structure and/or function whereby the digital audio signal is provided to processing structure which is configured to (i) identify a program-identifying code in the received digital audio signal, (ii) identify a program-identifying code in a decompressed received digital audio signal, (iii) identify a feature signature in the received digital audio signal, and (iv) identify a feature signature in the decompressed received digital audio signal. Preferably, such processing structure is disposed in a dwelling or a monitoring site in an audience measurement system, such as the Nielsen TV ratings system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.