Scaling adjustment using pilot signal
US6832078B2 · kind B2 · utility
5Cited by
2References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2002 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Apr 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H20/48
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A demodulator (10) converts television signals to video baseband signals and audio baseband signals including stereo signals representing a right channel signal value, a left channel signal value and a pilot signal having an amplitude. A DSP (60) recursively finds a coefficient value for scaling that keeps the pilot signal amplitude within a range of values, there by improving baseband signal quality, such as stereo separation of stereo signals within the baseband signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.