Apparatus and method for scrambling high-rate data
US7480383B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2004 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Jun 25, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/601
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The apparatus and method for scrambling high-rate data is disclosed. The apparatus includes a first storing unit for storing a transport stream (TS) inputted from an external device; a common key (CK) generating unit for generating a CK by receiving a control word (CW) from an external conditional access system (CAS); a key scheduling unit for generating predetermined number of keys (KK)s by receiving the CK from the CK generating unit; a plurality of enciphering units for enciphering the TS transmitted from the first storing unit based on the predetermined number of KKs and the CK; a second storing unit for storing the TS enciphered by the enciphering units and outputting the enciphered TS; and a controlling unit for controlling the multiple enciphering units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.