Process and device for the control of a microtip fluorescent display
US5555000A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 21, 1994 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Jul 21, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/2014
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device and a process for the control of a microtip fluorescent screen or display formed from pixels arranged in accordance with L rows and M columns of images able to have a discrete number of Q grey tones, in which the column voltage values are chosen in a strictly increasing sequence of N+1 values such that the row selection time being subdivided into S equal time intervals .DELTA.t, each voltage value is applied an integral number of times .DELTA.t, (N.times.S)+1 representing the number of grey levels, with N.gtoreq.2 and S.gtoreq.2. During a row selection time, the corresponding column voltage assumes a first value Va during a certain number of time intervals .DELTA.t, then during the remaining time intervals it additionally has a second value Vb following onto the first in the sequence of N voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.