Noise reduction apparatus with isolation transformers in an internet protocol television system
US8661478B2 · kind B2 · utility
1Cited by
6References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2009 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Jul 20, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/102
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A residential gateway includes an Internet Protocol television (IPTV) network communication port and a first isolation transformer circuit. The IPTV network communication port is configured to receive a signal from an ITPV network. The first isolation transformer circuit is in communication with the IPTV network communication port. The isolation transformer is configured to receive the signal from the IPTV network communication port, and to transform a ground of the signal to float at a ground potential of a power source of the residential gateway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.