Alphanumeric display means for computer-linked typewriter consoles using light-emitting diodes (LED's) in conjunction with sets of fiber-optic matrix members
US3934246A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1973 |
| Grant date | Jan 20, 1976 |
| Priority date | — |
| Expiry date | Nov 5, 1993 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/969
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an alphanumeric display unit means for improving the identification quantities at selected key buttons of a computer-linked typewriter console through usage of light-emitting indentification indicia attached adjacent to or at the selected key buttons. Each light-emitting display is in matrix format consisting of a set of fiber optic members arranged in orthogonal rows and columns. Encoding is via cooperative drum means including a plurality of rotatable light-emitting diodes (LED's) columnarly aligned at the interior of the drum means for generating a series of light signals for transmission along each set of fiber optic members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.