Tape loading device in magnetic recording/playback apparatus that controls loading based on calculated reel inertia and tape position
US5701214A · kind A · utility
23Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1992 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Jun 3, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/6653
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tape loading device in a magnetic recording/playback apparatus includes detection units for detecting the rotating direction and the rotation speed of a tape reel of a tape cassette, and a calculation unit for calculating a value of inertia of the tape reel from detected values of the detection units and the operational phase detected by a phase detector. In accordance with the calculated inertia value and the operational phase, a drive signal for a reel motor or a loading motor is controlled to prevent the tape from being damaged during the high-speed tape loading operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.