Device for displaying symbols by means of a liquid crystal matrix
US4710766A · kind A · utility
6Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1984 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Aug 21, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3692
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and device for displaying symbols by means of a liquid crystal matrix. The device comprises an automation driven by a clock which feeds cyclically to the control circuit of a liquid crystal matrix the bits representative of the elementary images contained in a random access memory. The memory has a capacity greater than k (n+m) bits, k being the multiplexing coefficient and n and m being respectively the number of lines and columns of the liquid crystal matrix. The memory is refreshed by a central computer during the interval of emission of the bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.