Video display and driver apparatus and method
US5519414A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1993 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Feb 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention relates to an apparatus and method for creating visual images on a display area. This invention uses the selective convergence of traveling electrical signals to cause selected display locations located across a display area to illuminate or to change their visual appearances. The apparatus of the invention includes a display mechanism that either illuminates or changes its visual appearance when activated, at least one signal propagation path that directs the propagation of the signals across the display area, and signal control equipment for selectively transmitting the signals. In a preferred embodiment first and second signal propagation paths provide unique propagation paths that pass through each of a the display locations across the area of the display. The signal control equipment selectively delays the transmission of the second signal relative to the first signal causing the signals to converge at a selected location to produce a change in the visual appearance of the screen at the selected location. By repeatedly altering the appearance of display locations across the display area, visual images may be produced. Requiring as few as one screen driver, the h…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.