System and method for high speed distributed cable broadband system
US7593391B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2005 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Jul 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The Hi-SD CBS includes a termination unit and pluralities of distributed customer premise units connected through the cable TV (CATV) network. The radio signals in Hi-SD CBS are propagating inside the co-axial cable. To insure the linking quality between the termination unit and customer premise devices, preamble procedures are required to adjust the transmitting radio power, the receiver sensitivity, the channel equalization, and to synchronize the transceivers for data transmission between the termination unit and the customer premise devices. To guarantee a secure link between the termination unit and an individual customer premise device or a group of premise devices, the termination unit provides different encryption keys to different customer premise device groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.