Recording apparatus with control of energy to the drive at start

Details Recording apparatus with control of energy to the drive at start Recording apparatus with control of energy to the drive at start

1987-01-12

1991-05-14

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

360 71, 360 7303, 369243, 369266, 318139, 358906, G11B 1920

Patent

active

050161245

ABSTRACT:
A recording apparatus comprises a recording head arranged to record signals on a recording medium; a motor for shifting a relative position between the recording medium and the recording head; and a control circuit arranged to apply electric energy to the motor in starting the motor either in a first mode in which the electric energy is limited to a first value or in a second mode in which the electric energy is limited to a second value which is lower than the first value. Also disclosed is a motor control circuit which is highly suited to the recording apparatus. Detecting apparatus is also included to detect whether the power source is an A.C. adapter or a battery.

REFERENCES:
patent: 4393420 (1983-07-01), Tomizawa
patent: 4480278 (1984-10-01), Maeda
patent: 4636905 (1987-01-01), Morimoto et al.
patent: 4675855 (1987-06-01), Iso et al.
patent: 4727443 (1988-02-01), Miyake et al.
Bell System Technical Journal, vol. 62, Nol 1, Hagland et al., 1/83, pp. 235-254.

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