Portable sound recorder and playback device with battery saving

Details Portable sound recorder and playback device with battery saving Portable sound recorder and playback device with battery saving

1986-08-21

1989-03-21

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 69, 360137, 369 19, 318293, 377 15, 377 20, 3281291, G11B 1520, G11B 1503, G11B 1510

Patent

active

048149055

ABSTRACT:
In a pocket size portable sound recorder, a special pushbutton swith is provided, and pulses are generated according to the number of operations of the pushbutton switch and are applied to a counter as upcount inputs. Also provided is a timer in which a pulse is generated whenever a specified time elapses after depression of the push button switch, and the pulse output is applied to the counter as a downcount input. Since the counter output is applied to the operation control circuit of the recorder, after the pushbutton switch is depressed, the recorder action will be carried out for a predetermined time period until the count value of the counter becomes zero. Also when the counter counts down to a predetermined value a flickering light is generated to indicate that the predetermined time is about to expire. If the special pushbutton is continuously depressed the counter is automatically reset to zero.

REFERENCES:
patent: 2286345 (1942-06-01), Clausen
patent: 3939361 (1976-02-01), Aidala et al.
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patent: 4129889 (1978-12-01), Ban et al.
patent: 4215378 (1980-07-01), Sato et al.
patent: 4225890 (1980-09-01), Takenaka et al.
patent: 4241364 (1980-12-01), Shiga
patent: 4331307 (1982-05-01), Furuta
patent: 4336559 (1982-06-01), Koyama et al.
patent: 4540851 (1985-09-01), Hashimoto

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