Truncated metric for NTSC interference rejection in the ATSC-HDTV trellis decoder
US6449002B1 · kind B1 · utility
17Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2000 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Jun 26, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/455
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a system for receiving a signal containing digital data representing HDTV image information in the form of multilevel symbols formatted into groups of successive fields, each field comprising a field segment, a plurality of data segments, and associated sync components, the received signal is demodulated to produce a demodulated signal. The demodulated signal is comb-filtered to reject NTSC co-channel interference to produce a filtered signal. The filtered signal is trellis decoded with a trellis decoder employing a truncated non-Euclidean metric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.