Record medium erasing device with variable control in accordance with power supply characteristics
First Claim
1. An erasing apparatus comprising:
- A) erasing means for erasing arbitrary information recorded on a recording medium;
B) determining means for determining the kind of power source device which supplies electric power to said erasing means; and
C) control means for inhibiting an operation of said erasing means in the state that said determining means has determined that the kind of the power source device is a battery which supplies the electric power to said erasing means.
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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.
12 Citations
35 Claims
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1. An erasing apparatus comprising:
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A) erasing means for erasing arbitrary information recorded on a recording medium; B) determining means for determining the kind of power source device which supplies electric power to said erasing means; and C) control means for inhibiting an operation of said erasing means in the state that said determining means has determined that the kind of the power source device is a battery which supplies the electric power to said erasing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 29, 33, 34, 35)
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8. A recording apparatus comprising:
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A) recording means for recording arbitrary information on a recording medium; B) erasing means for erasing arbitrary information recorded on said recording medium; C) determining means for determining the kind of a power source device which supplies electric power to said recording means and said erasing means; and D) control means for inhibiting an operation of said erasing means in the state that said determining means has determined that the kind of the power source device which supplies the electric power to said erasing means is a battery. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 30)
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17. A reproducing apparatus comprising:
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A) reproducing means for reproducing information from a recording medium; B) determining means for determining the kind of a power source device which supplies electric power to said reproducing means; C) cancelling means for cancelling the operation of said reproducing means when a predetermined set period of time has elapsed; and D) control means for shortening said set period of time in the state that said determining means has determined that the kind of the power source device which supplies the electric power to said reproducing means is a battery. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 31)
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26. An electronic apparatus, comprising:
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A) erasing means for erasing information recorded on a recording medium, B) instruction means for instructing said erasing means to perform said erasing operation, C) discriminating means for discriminating the kind of a power source, D) control means for prohibiting performance of said erasing operation instructed by said instruction means in the state that said discriminating means has discriminated that the kind of power source is a battery. - View Dependent Claims (27, 28, 32)
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Specification