Method for recording/reproduction by recording/reproducing system for visual inspection device
US6259474A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1998 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Sep 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
While a vehicle is traveling, a line sensor camera shoots a tunnel wall surface. Line images from the line sensor camera which outputs a line image equivalent to one line from 2,048 pixels are digitized, and stored in a buffer memory in a state arranged in a moving direction of the line sensor camera. Whenever image data corresponding to 2,048 pixels.times.472 lines are stored, the image data are divided into four plane image data each composed of 512 pixels.times.472 lines. Each plane image is converted to a video image signal by a video signal converter in chronological order, and the video image signal is recorded on a video tape by a video deck. The recorded video tape is played back by another video deck, and a reproduced image is image processed by an image processor, whereby the state of the tunnel wall surface can be inspected. Thus, the equipment cost is reduced, and the time required for inspection shortened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.