Methods and apparatus for the measurement of video quality
US6734898B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2001 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Jul 4, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to methods and apparatus for measuring the quality of video (e.g., television) signals. In particular, the methods and apparatus of the present invention allow for the measurement of various quality parameters of analog or digital video signals at a set-top terminal 10 or similar device, without the need for external test equipment. A video signal 14, which contains a test signal, is received at a decoder 20. The video signal 14 is decoded and temporarily stored in memory 40. A processor 30 associated with the decoder 20 and the memory 40 analyzes the test signal and calculates a quality parameter for the received video signal 14 based on the test signal. The quality measurements can also be accessed remotely and downloaded, for example, by a cable television provider at a cable television headend. The video quality measurement may include various indicators of end-to-end system performance, including the performance of the set-top terminal 10 or similar device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.