CEBus node zero switching device
US6118974A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1997 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Feb 6, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/106
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention presents a multimedia signal distribution device that implements the Electronics Industry Association (EIA) "Node Zero" standard for a Consumer Electronics Bus (CEBus) signal distribution network. The preferred embodiment of the present invention comprises a block frequency conversion loop that is combined with other conventional electronic devices to accomplish the multimedia signal frequency conversion, filtering and distribution functions required of the ideal Node Zero device set forth in the EIA CEBus standard. The present invention preferably implements the CEBus block frequency conversion, input and output band-pass filtering, and signal amplification requirements by a block frequency conversion loop comprised of the following components which process the internal signal block in the following series order: (a) passive first low-pass or band-pass filter; (b) a 1000 MHz first frequency mixer; (c) an intermediate frequency (IF) filter; (d) a 38 dB signal amplifier; (e) a selectable second frequency mixer and (f) a tunable second low-pass or band-pass filter 11. Optionally, a broad-band quadrature signal phase shifting device may be implemented in conjunct…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.