Restricted reception device for digital cable broadcasting system, and reception system and method using the same
US7383562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2003 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | May 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6168
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A restricted reception device enabling a subscriber receiver to selectively receive broadcasting data transferred via a digital cable broadcasting network, includes: a demultiplexer for receiving broadcasting data and an ECM including a CW from the subscriber receiver, and demultiplexing them, the broadcasting data and the ECM being transferred through an in-band channel; an out-of-band channel signal processor for receiving an EMM from the subscriber receiver, and processing the EMM, the EMM being transferred through an out-of-band channel; a restricted reception processor for descrambling the scrambled broadcasting data using the ECM and the EMM received from the out-of-band channel signal processor; and a remultiplexer for multiplexing the descrambled broadcasting data received from the restricted reception processor, and sending the multiplexed broadcasting data to the subscriber receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.