Sensory aid for visually handicapped people
US4227209A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1978 |
| Grant date | Oct 7, 1980 |
| Priority date | — |
| Expiry date | Aug 9, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sensory aid system for visually handicapped persons. The system provides a magnified image of graphical material, such as text. The system includes an image sensor which may include a lens assembly and photodiode detector array. The image sensor is coupled to a display array, with each detector array element having a one-to-one correspondence with one (or a group of) display array elements. The display array may be adjusted electronically to provide any degree of magnification simply by changing the number of elements in the array driven by the signal information. The display array elements may be red light emitting diodes (LED's). In this form, the present invention provides a magnified brightly illuminated red image of the black areas of print against a black, or dark, background, instead of the conventional text format of black print (information) on white paper (noise).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.