Signal processing apparatus for endoscope capable of changing outline enhancement frequency
US4882623A · kind A · utility
57Cited by
1References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Aug 11, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S600/921
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal processor for processing signals obtained from an electronic endoscope having an image pickup device which performs photoelectric conversion, the processor having an outline enhancing circuit capable of enhancing outlines within one of a plurality of enhancement frequency ranges, and a circuit capable of selecting one these enhancement frequency ranges. Frequencies that define the range of outline enhancement are thereby varied depending upon the type of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.