Accelerated replication of multiple computer displays
US5704042A · kind A · utility
69Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1993 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Sep 28, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/329
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system wherein multiple computers engage in a video conference. The invention creates a common visual image which is displayed by all computers. However, the invention does not distribute a bit map of the image to all computers. Instead, the invention distributes the commands from which the image is created. Further, the distributed commands rely on data structures, which define parameters such as pen color, background color, line width, etc. The data structures are stored in each computer. When a data structure is changed, the invention does not immediately inform all other computers of the change, but waits until necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.