Rotary head type digital signal reproducing apparatus with different modes and tracking control
US4839755A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Aug 31, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1806
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rotary head type type digital signal reproducing apparatus plays a magnetic tape which is pre-recorded with a tracking reference signal in predetermined starting and ending portions of each track which is formed obliquely to the longitudinal direction of the magnetic tape and with a digital audio signal in an intermediate portion between the starting and ending portions of each track. When playing a magnetic tape pre-recorded in a half-speed mode, only the tape transport speed is set identical to that at the time of the recording. A tracking control is carried out based on tracking reference signals reproduced during predetermined two successive scans out of four successive scans made with respect to every two mutually adjacent tracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.