Combining images and controlling a cursor when images are combined
US6377282B1 · kind B1 · utility
Assignees
Inventor
Key dates
| Filing date | Mar 15, 1999 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Mar 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0481
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a video conferencing system, a video overlay system (160) generates a motion video signal (MV). The motion video signal incorporates an image received from a remote video conferencing system (110.2) and from a local camera (186). The video overlay system also receives a computer video signal (CV) from a local computer (140). A summing amplifier (310) in the video overlay system generates an output signal (SV) representative of the sum of the computer video signal and the motion video signal. The output signal (SV) is provided to a monitor (174) when motion video is to be displayed. Use of the summing amplifier allows a cursor (240) generated by the computer to be inserted into the motion video on the monitor screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.