Multiple signal processing unit for utility wiring by receiver/LAN and utility wiring system by receiver/LAN
US6618447B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Mar 19, 1999 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Mar 19, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/108
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A unit which processes multiple signals transmitted through utility wiring by receiver/LAN has a utility wiring connecting terminal (10) connected to the utility wiring by receiver/LAN, at least one input-output terminal for connecting computer (11) connected to the terminal (10), and at least one input-output terminal for connecting receiver (12) connected to the terminal (10). First signal interference preventing circuits (13 and 19) are respectively connected between the terminal (10) and the input-output terminal (12) so as to check the reverse flow of LAN signals. Therefore, signals for a television receiver, etc., and LAN signals can be transmitted through a coaxial cable for television, etc., wired in an already existing building without causing interference between the signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.