| 摘要 |
<p>A magnetic recording/reproducing device provided with a recording device which records signals on a magnetic tape with a rotary head and a reproducing device having a standard reproduction mode in which signals are reproduced at a standard tape speed and a high-speed reproducing mode in which signals are reproduced at a prescribed tape speed faster than the standard tape speed. A recording signal processing section processes digital signals to be recorded so that the data of the digital signals to be reproduced in the high-speed reproducing mode may be dispersedly recorded at prescribed positions on a plurality of prescribed tracks. In the high-speed reproducing mode, the data to be reproduced at the high-speed are recorded so that the data can be arranged along the scanning locus of the rotary head on the magnetic tape. A mark adding section generates marks corresponding to the positions of the tracks on which the data of digital signals to be reproduced in the high-speed reproducing mode are recorded and adds the marks to control signals. A control head records the control signals to which are added the marks corresponding to the positions of the tracks on a magnetic tape when the recording device records signals or reproduces the control signals to which the marks are added when the reproducing device reproduces the signals. A mark detecting section detects the marks from the reproduced control signals. A phase comparing section detects the phase differences between the marks and a reference signal synchronizing with the rotation of the rotary head. A capstan servo section controls the speed of the magnetic tape so that the phase difference may be a prescribed reference value.</p> |
