Record medium erasing device with variable control in accordance

Details Record medium erasing device with variable control in accordance Record medium erasing device with variable control in accordance

1992-10-16

1998-11-03

Neyzari, Ali

Dynamic information storage or retrieval

Control by timer or external extraneous condition

340636, G11B 3100, G08B 2100

Patent

active

058319450

ABSTRACT:
A recording or reproducing apparatus capable of using power sources of different kinds, each having a different characteristic, is provided with a discriminating switch for discriminating the kind of the power source by means of the configuration of the electrodes of the power source and producing a discrimination result. The electrodes of each kind of power source are formed to have a different configuration. The execution or non-execution of an erasing operation is controlled in accordance with the discrimination result. In addition, an auto-shut-off circuit automatically shuts off the operation of the power source if an inoperative state continues for a predetermined time period, and the predetermined time period is set in accordance with the discrimination result.

REFERENCES:
patent: 4350422 (1982-09-01), Maida
patent: 4447837 (1984-05-01), Hirata et al.
patent: 4645325 (1987-02-01), Inoue et al.
patent: 4835410 (1989-05-01), Bhagwat et al.
patent: 4879703 (1989-11-01), Kaku et al.
patent: 4965738 (1990-10-01), Bauer et al.

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