Large scale movie display system with multiple gray levels
US5198803A · kind A · utility
173Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1990 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Jun 6, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A large scale electronic display board system for displaying images in response to an image signal. The system has a light emitting diode (LED) display for displaying images in multiple gray levels. The LED display has an N.times.M array of LEDs. Each LED has a corresponding driving circuit which linearly controls the gray level of the LED.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.