Digital servo track format

Details Digital servo track format Digital servo track format

1992-02-28

1995-04-18

Hajec, Donald

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 49, 360 51, 360 7313, G11B 1518, G11B 1552, G11B 1902, G11B 509

Patent

active

054083680

ABSTRACT:
A digital servo track pattern for a magnetic medium which can be recorded and reproduced by a recording and reproducing system. The servo track pattern has a plurality of digital mark patterns recorded thereon, each of said digital mark patterns having a leading identifier field of digital bits, a trailing identifier field of digital bits and a field of digital synchronizing data located between said leading and trailing identifier fields. The leading identifier field of digital bits is electrically equivalent during reproducing while the medium is moving in a first direction to the trailing identifier field of digital bits while the medium is moving in a direction opposite to said first direction.

REFERENCES:
patent: Re31311 (1983-07-01), Miller
patent: 4167759 (1979-09-01), Tachi
patent: 4377825 (1983-03-01), Kasubuchi et al.
patent: 4663678 (1987-05-01), Blum
patent: 4862443 (1989-08-01), Tsuji et al.
Proposed SMPTE Standard for Television Digital Component and Composite Recording, SMPTE Journal, Mar. 1992.
John Watkinson, The D-2 Digital Video Recorder, 1990 pp. 143-183.

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