Magnetic tape loading apparatus

Details Magnetic tape loading apparatus Magnetic tape loading apparatus

1990-05-22

1992-11-24

Stodola, Daniel P.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

360137, G11B 15665, G11B 1543, G11B 1518

Patent

active

051656221

ABSTRACT:
A cassette discriminating apparatus incorporated in a magnetic recorder for discriminating between a first cassette and a second cassette. The discriminating apparatus includes a supply reel drive for rotating the supply reel of the first cassette or of the second cassette, a take-up reel drive for rotating the take-up reel of the first cassette or of the second cassette, a first sensor for detecting the number of revolutions of each of the supply reel drive and the take-up reel drive, a second sensor for detecting the number of revolutions of a capstan, an arithmetic unit for computing the sum of a first square of the number of revolutions of the capstan per one revolution of the supply reel drive and a second square of the number of revolutions of the capstan per one revolution of the take-up reel drive, based on the outputs from the first and second sensors, respectively, a comparator for comparing the output from the arithmetic unit with a predetermined reference value to discriminate between the first cassette and the second cassette, and a tension control unit for controlling the tape tension according to the result of the discrimination by the comparator.

REFERENCES:
patent: 4644436 (1987-02-01), Unno
patent: 4989112 (1991-01-01), Hamoda
patent: 4996611 (1991-02-01), Ito

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