Sound recording and reproducing apparatus using a cassette havin

Details Sound recording and reproducing apparatus using a cassette havin Sound recording and reproducing apparatus using a cassette havin

1975-09-16

1977-06-28

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 72, 360 74, 360 96, G11B 1518, G11B 1508, G11B 2304, G11B 2334

Patent

active

040329879

ABSTRACT:
A sound recording and reproducing apparatus utilizing replaceable magnetic tape cassettes. The sound recording and reproducing apparatus includes an arrangement for the detection of a specified position of the tape utilizing a light detection unit which is installed in the apparatus. The light detection unit consists of a light emitting device together with a light receiving device. The casing of the cassette includes a reflective portion thereon which is placed in reflective alignment between the light emitting device and the light receiving device. Light can only be transmitted between the light emitting device and the light receiving device once a specified position of the tape is achieved.

REFERENCES:
patent: 3614453 (1971-10-01), Johnson
patent: 3684208 (1972-08-01), Larsen
patent: 3909845 (1975-09-01), Rothlisberger et al.
patent: 3925817 (1975-12-01), Althuber et al.
patent: 3932889 (1976-01-01), Takeda et al.

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