Teletext reception indicator
US4520392A · kind A · utility
100Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1983 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Mar 4, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/44504
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An indicator is described for alerting a television viewer to the fact that a teletext signal is being received. In the preferred embodiment, the indicator includes a control which senses the detection of the framing code associated with the received teletext signal to actuate an indicator lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.