Device for indicating the received signal quality in a digital television receiver
US6389070B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1999 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Mar 31, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4882
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device for indicating the quality of a received digital broadcast video signal in a digital television receiver includes circuitry for determining the amount of multipath interference. The device generates a display graph indicative of the signal quality. Optionally, the device may also consider, in determining the signal quality, whether a demodulator in the television receiver is able to lock onto a sync sequence in the video signal, whether an adaptive equalizer also in the television receiver is able to lock onto the sync sequence, and the amount of errors being corrected in an error correction circuit in the television receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.