Head indexing apparatus for a combined two and four channel tape

Details Head indexing apparatus for a combined two and four channel tape Head indexing apparatus for a combined two and four channel tape

1975-09-15

1977-06-07

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 93, 360 78, G11B 555, G11B 2108, G11B 2304

Patent

active

040287351

ABSTRACT:
A combined two (stereo) and four (quadraphonic) channel tape recorder is disclosed which can use both two and four channel eight track magnetic tape cartridges. The tape recorder includes a head positioning rotary body having four fixed rotary positions and a selection means for selecting two of these four fixed rotary positions when four channel (quadraphonic) operation is desired. The selection means comprises a rotary switch rotated in association with the rotation of the head positioning rotary body and an additional switch connected in series with the rotary switch and actuated by each rotation of the rotary body. Thus a single tape recorder capable of playing stereophonic and quadraphonic magnetic tape cartridges has been provided.

REFERENCES:
patent: 3492005 (1970-01-01), Uno et al.
patent: 3507501 (1970-04-01), Lear
patent: 3632114 (1974-01-01), Ban
patent: 3787058 (1974-01-01), Lyon, Jr.
patent: 3925818 (1975-12-01), Tahara
B487,411, Feb. 2, 1976, Nishinakagawa, 360/78.

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