Tape recorder

Details Tape recorder Tape recorder

1979-10-05

1982-03-23

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

360 62, 360 722, 360 744, 360 79, 434319, 434342, G11B 1502, G11B 1518, G11B 3100

Patent

active

043216331

ABSTRACT:
A miniature tape recorder with a two-channel magnetic head and a selecting member for selecting one of combinations of channels for recording and reproducing without releasing a record-actuating member and a reproduction-actuating member, which tape recorder can be used to form an inexpensive study machine by connecting it to an outside study unit for using a two-channel study tape, wherein study step cannot proceed unless a student thoroughly understands the answer to the question of one study step.

REFERENCES:
patent: 3587180 (1971-06-01), Richt
patent: 3950782 (1976-04-01), Carey et al.
patent: 3955466 (1976-05-01), Goldmark
patent: 3996671 (1976-12-01), Foster
patent: 4121264 (1978-10-01), Kishi et al.
patent: 4199724 (1980-04-01), Kondo
patent: 4206488 (1980-06-01), Nakayama et al.
patent: 4210785 (1980-07-01), Huber et al.

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