Electro-acoustic device for reading a two dimensional image by means of an electrode network
US4097900A · kind A · utility
5Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1976 |
| Grant date | Jun 27, 1978 |
| Priority date | — |
| Expiry date | Dec 17, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device for the line-by-line electrical analysis of an image. It comprises a piezo-electric medium associated with a semiconductor medium scanned by the interaction of two elastic waves propagated at the surface of the piezoelectric medium, and an electrode network. The electrodes are disposed on the semiconductor medium parallel to the scanning direction and each of which supplies an electrical signal the amplitude of which characterizes the luminous intensity of the elementary zones of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.