System providing freeze of closed captioning data
US5959687A · kind A · utility
25Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Oct 10, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4884
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video signal processing system produces an output signal suitable for producing a closed caption display and is responsive to a "freeze" command from a user for modifying generation of the output signal such that the content of the closed caption region of the display does not change. The system provides for user selection of various freeze modes including one in which just the caption region of a display is frozen, another in which just the video region of the display is frozen, and another in which both the caption and video regions of the display are frozen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.