Comb filtered signal separation
US6175389A · kind A · utility
26Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1999 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Feb 4, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adaptive signal separation system and method for quadrature amplitude modulated signals that is particularly well-suited for YC separation of a composite television signal. An adaptive approach for separating overlapping signals wherein the adaptive approach selects between notch or equivalent filtering and a comb filtering system, wherein the chrominance is first demodulated to the IQ domain prior to comb filtering. The demodulated comb filtered IQ data streams are then re-modulated to reconstruct the luminance portion of the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.