Detection of objects on a computer display
US5999171A · kind A · utility
6Cited by
6References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1997 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Jun 19, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0386
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system of detecting objects displayed on a display screen is described. Each object displayed on the screen visually emits a unique identification signal. The identification signal or lack of an identification signal is detected by a detector such as a light pen or video gun and the detector transmits the identification signal on a serial bus to the display screen graphics controller thereby indicating to the controller the position on the screen at which the detector is pointed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.