Communications system
US5140419A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1989 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Dec 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/162
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A communications system having centralized management and multiply-hierarchical addressing schemes is disclosed. The system may be used in connection with supplying video, audio and data such as weather-related text, graphics, and information to affiliated receivers in a network for broadcast or display. Receivers may be addressed singly or in groups and allowed to determine their own addresses from information keyed, directly or indirectly, to a receiver characteristic such as the unit serial number. Lists of commands denominated "scripts" and transmitted to receivers are used for controlling the various modes or states of the receivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.