Positioning systems including reliable track crossing detection

Details Positioning systems including reliable track crossing detection Positioning systems including reliable track crossing detection

1989-05-05

1991-08-06

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4427, 369 4429, 360 7807, G11B 709, G11B 2108

Patent

active

050383337

ABSTRACT:
A track-seeking apparatus of a disk recorder employs a track-crossing sensor to produce track-crossing signals. An oscillator is slaved to the sensor for supplying substitute track-crossing pulses in the absence of the sensor providing such pulses or when the radial velocity exceeds a threshold velocity. A velocity profile means alters the oscillator frequency so that the oscillator produces track-crossing pulses in accordance with the profile.

REFERENCES:
patent: 3997876 (1976-12-01), Frush
patent: 4133011 (1979-01-01), Kurzweil, Jr.
patent: 4135217 (1979-01-01), Jacques et al.
patent: 4406000 (1983-09-01), Shoji et al.
patent: 4414655 (1983-11-01), Shoji et al.
patent: 4587644 (1986-06-01), Fujiie
patent: 4593386 (1986-06-01), Kuwahara
patent: 4688202 (1987-08-01), Mukai et al.
patent: 4839876 (1989-06-01), Fennema
patent: 4876679 (1989-10-01), Mukai
patent: 4899234 (1990-02-01), Genheimer
patent: 4901299 (1990-02-01), Nakatsu
patent: 4967404 (1990-10-01), Orlicki et al.
Hanson et al, "Disc File Defect Screening System", IBM Technical Disclosure Bulletin, vol. 17, No. 2, Jul. 1974, pp. 495-497.

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