System for filtering broadcast digital information in accordance with channel identifiers stored in preference list which can be dynamically updated via command through network
US6021419A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1997 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Sep 16, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/329
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A filter adaptor connects a computer to a network through a network connection. The network has a large plurality of broadcast type messages having a given protocol. Each of the broadcast messages has a destination field and a source field. The adaptor has a preference list of one or more fixed channels that the computer is capable of receiving. Each fixed channel has a channel identifier that is also listed in the preference list. Further, the filter adapter has a filtering process that monitors the source field and discards any message that does not have a source identifier in the source field that matches one of the channel identifiers on the preference list.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.