Tape position detecting device that compares and selects between two modes of detecting the tape position
US5251078A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1991 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Mar 18, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/323
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In the tape position detecting device, the relative position data and absolute position data of the reference points are stored, and with respect to an arbitrary point, the first tape position data is detected by using the relative position data. The tape movement data from a reference point to the arbitrary point which is obtained using the absolute position data is added to the absolute position data of the reference point to detect the second tape position data. Depending on the difference between the first and second tape position data, the first or second tape position data is transmitted as the tape position data output. Hence, with the tape position detecting device, the tape position data can be detected much more accurately than with the conventional device in which it is detected by using the relative position data or absolute position data only.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.