Still image control in an electronic endoscope
US5270810A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1992 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Feb 12, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/555
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic endoscope, having an electronic circuitry arranged to apply output signals of a solid-state image sensor to a processor, to store sequentially obtained picture data of a subject in an image memory means after predetermined signal processing, and to read out a plural number of picture data from the image memory means to produce simultaneous video signal, while providing a still image memory means parallel with the image memory means, along with a switch means for selectively supplying the signals from the image memory means or from the still image memory means as output signals. Further, the electronic circuitry includes a noise reducer incorporating a motion detector and located on the output side of the image memory means, and a still image control means adapted to detect deviations in color signal on the basis of output signals of the motion detector of the noise reducer and to renew the data in the still image memory means each time when no color deviation is detected in the picture signals from the solid-state image sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.