Multi-service data receiver architecture
US5923755A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1997 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Jul 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4382
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A flexible architecture for a digital data receiver including a demultiplexer is provided which allows modular addition of data processors with low complexity and minimal memory requirements. The demultiplexer operates on a scalable frame-based multiplex signal, and interprets the multiplex control data at the start of the frame. With the information interpreted from the control data, the demultiplexer separates individual data services and optionally decrypts them. Data, a data clock and an error flag signal are presented to the demultiplexer input. According to a service requested by a user, the demultiplexer outputs decrypted data clock, error flag and service enable signals in a flow-through manner to an appropriate data processor without data storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.