Early tape end alarm for a multispeed tape recorder

Details Early tape end alarm for a multispeed tape recorder Early tape end alarm for a multispeed tape recorder

1980-04-04

1982-05-25

Christian, Leonard D.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

360 742, B65H 5938, G03B 104, G11B 1532

Patent

active

043313078

ABSTRACT:
An early tape end alarm for a multispeed tape recorder has a hub around which a tape is wound and which revolves at the speed corresponding to an amount of tape wound therearound, a first pulse generating means for generating a first pulse (P1) with a period changing in accordance with the rotary speed of the hub, and an alarm means which compares a value (CD) corresponding to the period of the first pulse (P1) with a given value (PD) thereby to give an alarm to notify that a traveling tape will reach its tape end in a short-time on the basis of the result of the comparison. The early tape end alarm is characterized by a means for changing a condition to provide the comparison result in the alarm means in accordance with the tape traveling speed for determining the timing of the generation of the alarm substantially independent of a traveling speed of the tape.

REFERENCES:
patent: 3600654 (1971-08-01), Yasutake
patent: 3730453 (1973-05-01), Hotchkiss et al.
patent: 3913519 (1975-10-01), Sugano
patent: 4213583 (1980-07-01), Mitani et al.

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