Scanning-image forming apparatus using photo response signal
US4453181A · kind A · utility
3Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1981 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Oct 15, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/409
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanning-image forming apparatus using a photo-response signal according to this invention is constructed so that the photo-response signal obtained by scanning the surface of a semiconductor specimen with a photon beam is subjected to a 2nd differentiation, and that an image is displayed by employing the 2nd derivative of the photo-response signal as a modulation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.