Adaptive channel equalizer
US6490007B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2000 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | May 5, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/426
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a receiver for processing a VSB modulated signal containing terrestrial broadcast high definition television information including data packets, the received signal is converted to a digital signal (19), demodulated (22) and equalized by an adaptive channel equalizer (34). An equalized signal is processed by decoding networks including a Reed-Solomon FEC error detecting and correcting network (44). The equalizer filter coefficient step size is dynamically adjusted during the adaption process as a function of the packet error rate. A local microcontroller (60) monitors the packet error rate at the Reed-Solomon error detector and instructs the equalizer to adjust the coefficient step size in a direction to reduce the packet error rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.