Electronic endoscope apparatus for discriminating optically variable power from electronically variable power
US6387046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2001 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Mar 5, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/555
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When a variable powers witch of an electroscope is operated, a motor is driven to move a movable lens, and an optically enlarged image can be obtained. Furthermore, the optical image is electrically enlarged by an electronically variable power circuit. When the optically variable power is switched into the electronically variable power and vice versa, the operation of the variable power switch can be temporarily nullified to stop the variable power operation, and the switch is operated again to resume the operation. Thus, an operator can recognize the switch between the optically variable power and the electronically variable power. Furthermore, a time lag for a predetermined time can be set to switch between the optically variable power and the electronically variable power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.