High performance data tuner for video systems
US5731841A · kind A · utility
17Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 1994 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | May 25, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N11/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tuner specifically adapted for recovery of a data signal injected into a video signal and then subsequently transmitted over a television channel or cable is disclosed. The tuner includes an IF local oscillator that is phase locked to the input signal sync pulses and has filters that are designed to pass through only the data bandwidth. In addition, the circuit has a low noise figure of about 1.5 dB and a third order intercept point of +35 dBm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.