Switched channel system
US5812665A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1996 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Jun 7, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/17336
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A switching apparatus and method for routing RF scrambled signals. One of a plurality of scrambled RF television information signals is selected. A processor assigns an output carrier frequency. The selected scrambled television information signal is output by the switching apparatus on the assigned output carrier frequency. The plurality of scrambled RF television information signals is carried on an RF bus in the switching apparatus. The bus may consist of a plurality of cables. An RF switch connects a tuner to one of the cables. An amplifier is connected to the tuner. An amplitude information signal is decoded off the RF bus and is used for controlling gain of the amplifier. An up converter applies the output of the amplifier onto the assigned carrier frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.