Apparatus for longitudinal bidirectional recording with equal le

Details Apparatus for longitudinal bidirectional recording with equal le Apparatus for longitudinal bidirectional recording with equal le

1986-12-16

1989-04-04

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head moving during transducing

Tape record

360 64, 360107, G11B 552, G11B 1514, G11B 2104

Patent

active

048190993

ABSTRACT:
A recording and/or reproducing apparatus employs a azimuth-pair-head in a rotary head drum. The rotary head drum is axially shifted by a head shifting means. First tracks are formed on a magnetic tape during forward driving of the magnetic tape across the rotary head drum. On the other hand, second tracks are formed adjacent to the first tracks during reverse driving across the rotary head drum. Since the first and second tracks are formed by means of the azimuth-pair-head, azimuth gaps thereof will have a different or symmetrical obliquity to each other. This successfully avoids cross-talk between adjacent tracks to allow formation of the first and second tracks in a tightly arranged fashion. As a consequence, high-density longitudinal recording without cross-talk between adjacent tracks becomes possible.

REFERENCES:
patent: 3294902 (1966-12-01), Maxey
patent: 4040109 (1977-08-01), Kryltsov
patent: 4285016 (1981-08-01), Gilovich
patent: 4318146 (1982-03-01), Ike etal.
patent: 4321634 (1982-03-01), Lehureau
patent: 4369473 (1983-01-01), Eibensteiner
patent: 4482928 (1984-11-01), Moriya et al.
patent: 4609947 (1986-09-01), Yamagiwa et al.
Pugh, "New Format Video Recorder", IBM Tech. Disc. Bull., vol. 22, No. 4, Sep. 1979.
Zentgraf, "Dual-Sized Magnetic Recording", IBM Tech. Disc. Bull., vol. 15, No. 11, Apr. 1973.

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