Electronic billboard replacement switching system
US6191825A · kind A · utility
23Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/2723
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic billboard replacement system for use in a TV broadcast system including electronic billboard storage device for storing a plurality of replacement billboards and an electronic sequencer device for controlling the time period that each one of the plurality of billboards is displayed to a TV viewer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.