Discontinuous position detecting device and method for detecting a discontinuous position
US7031237B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2000 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Sep 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A discontinuous position detecting device for detecting a discontinuous position at which date and time information indicative of date and time of recording on a recording medium is discontinuous, the discontinuous position detecting unit including, a scanning unit that scans the recording medium in a first direction and in a second direction that is different from the first direction, a first detecting unit that detects a temporary discontinuous position located in a vicinity of the actual discontinuous position while the scanning unit scans the recording medium in the first direction, a second detecting unit that detects the actual discontinuous position while the scanning unit scans the recording medium in the second direction, and a scan controller that controls the scanning unit to scan the recording medium at a first scan speed except while the second detecting unit detects the actual discontinuous position, and to scan the recording medium at a second scan speed while the second detecting unit detects the actual discontinuous position, the second scan speed being slower than the first scan speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.