System and method for efficient computer workstation screen updates
US5491780A · kind A · utility
209Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1994 |
| Grant date | Feb 13, 1996 |
| Priority date | — |
| Expiry date | Aug 25, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/40
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A local computer 132 is connected to a remote computer 136 over a network for collaborative processing, whereby changes to the screen of the local computer are to be reflected on the screen of the remote computer. A hook routine 110 is used to intercept requests to update the screen of the local computer, and the area of the screen to be updated is determined from the request. Another routine then obtains the bit map for the area of the screen which has been updated, and only this bit map is transmitted to the remote computer, rather than one corresponding to the whole screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.