Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1981-02-25
1984-01-03
Wolff, John H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 21, 360121, 360 78, G11B 2102
Patent
active
044245416
ABSTRACT:
A single multi-track head having a plurality of head gaps aligned on a center axis thereof is arranged to assume respectively first and second inclined positions with respect to a transverse axis of a magnetic recording tape. The number of the head gaps equals a half of the total number of tracks to be formed on the tape, and the head gaps are equidistantly spaced so that only odd tracks are formed to record a digital signal when the tape runs in one direction with the multi-track head in one of the first and second inclined positions. When the tape has come to the end, the tape is turned upside down to continuously record the digital signal on even tracks. Before forming the even tracks, the multi-track head is manually or automatically operated to assume the other inclined position. With this operation, the odd and even tracks have different azimuths from each other preventing cross-talk between adjacent tracks. An electrical circuit for detecting which side of the tape is at the top, and a mechanism for rotating the multi-track head either clockwise or counterclockwise may be employed for automatically placing the multi-track head in one of the first and second inclined positions.
REFERENCES:
patent: 2937239 (1960-05-01), Garber, Jr. et al.
patent: 3781490 (1973-12-01), Phillips
patent: 4302783 (1981-11-01), Mima
Koinuma Kazuo
Yamazaki Masami
Victor Company of Japan , Limited
Wolff John H.
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