Information processing apparatus with missing pulse detection an

Details Information processing apparatus with missing pulse detection an Information processing apparatus with missing pulse detection an

1989-12-29

1993-05-11

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 32, 369 4426, 369 4432, 369 58, G11B 700, G11B 2108

Patent

active

052107310

ABSTRACT:
An apparatus is provided for a disc-shaped information recording medium having a plurality of information recording tracks formed thereon with substantially equal distances therebetween in the spiral or concentric fashion. The apparatus further includes a recording/reproducing head for recording and reproducing information on and from the information recording tracks. The apparatus is capable of detecting information from the medium when the head is moved in the radial direction of the medium. A track detection pulse signal is extracted from the information detected by the apparatus when the head is moved in the radial direction. If a pulse is missing, the apparatus generates a pulse signal corresponding to the missing pulse, corrects the analog signal, and synthesizes a new signal.

REFERENCES:
patent: 4811316 (1989-03-01), Hosoya
patent: 4839876 (1989-06-01), Fennema
patent: 4974221 (1990-11-01), Hosoya et al.
patent: 4989190 (1991-01-01), Kuroe et al.
patent: 5027338 (1991-06-01), Ata
patent: 5038333 (1991-08-01), Chow et al.
patent: 5073881 (1991-12-01), Akiyama
patent: 5151888 (1992-09-01), Shikichi et al.

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