Highly integrated television tuner on a single microcircuit
US5737035A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1995 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Apr 21, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J7/02
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
There is disclosed a fully integrated television receiver for receiving a standard antenna or cable input and outputting a standard video baseband signal and a standard audio baseband signal. The receiver employs an up-conversion mixer and a down-conversion image-rejection mixer in series to produce an on-chip IF signal. Audio detection of the IF signal is performed via an audio delay-locked loop operating in quadrature to the audio FM signal. Video detection of the IF signal is performed by frequency mixing the IF signal with the extracted video carrier of the IF signal. Variable load drive capability is provided for both the video output and the audio output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.