Telephone handset with full-page visual display
US5048077A · kind A · utility
153Cited by
60References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1988 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Jul 25, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2007/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A telephone handset incorporates a miniature virtual image display which can display a full page of text at high resolution. The miniature display is a scanning mirror type of display in which a line image is generated by a line of light-emitting devices such as light emitting diodes (LEDs). A magnifying optical system creates a magnified virtual image of the LED line and the virtual line image is then converted into a virtual raster image by an oscillating mirror. The virtual image can be viewed at distances close to the display so that the display can be viewed while the telephone handset is being used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.