Automatic on-screen display of auxiliary information
US7676822B2 · kind B2 · utility
5Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2001 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Apr 26, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4532
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system, method and apparatus for displaying real time auxiliary information from a secondary source or input signal in combination with a program from a separate primary source. The auxiliary information (e.g. textual, graphical or video images) is selectable and is received through a second, integral or stand-alone tuner. The selected information can be displayed (1) continuously, (2) at predefined regular intervals, or (3) as the (defined) event(s) occur either in real time or in memory to provide a short delay time. The auxiliary information may be part of a currently transmitted data stream or as a separate data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.