Method and means for automatically variably controlling display parameters
US4563740A · kind A · utility
15Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1983 |
| Grant date | Jan 7, 1986 |
| Priority date | — |
| Expiry date | Nov 17, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The display Gray level in a video display of a computer tomography system is changed at a rate which is non-linearly proportional to the rate of pulses generated by a manually operated control such as a track ball thereby accelerating change in the Gray level when a large change is desired and decelerating change in the Gray level when exact positioning is desired. Control of the rate of change can be by programmed computer or by hardwired logic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.