Data reproducing apparatus using idling current

Details Data reproducing apparatus using idling current Data reproducing apparatus using idling current

1987-12-24

1990-04-17

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369122, 372 29, 372 31, G11B 700

Patent

active

049186817

ABSTRACT:
A data reproducing apparatus is disclosed which permits stabilization of the light output of a light source, thereby to permit reliable reproduction of data. When recording data on an optical disk and also when reproducing the recorded data by illuminating the optical disk by means of a laser beam from a semiconductor laser, an idling current is supplied in advance to the semiconductor laser, to such an extent that the semiconductor laser does not emit a laser beam. As a result of the preliminary supply of the idling current, the output of the semiconductor laser is stabilized.

REFERENCES:
patent: 4509156 (1985-04-01), Ohara et al.
patent: 4695994 (1987-09-01), Steebergen et al.
patent: 4799224 (1989-01-01), Bottacchi et al.

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