Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1984-04-20
1987-09-22
Faber, Alan
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 46, 369 59, 369 97, 369120, 235456, 250202, 250570, G11B 709, G11B 2010
Patent
active
046959912
ABSTRACT:
Information stored in a medium as multiple machine readable record entries arranged in frames which are themselves arranged in one or more channels may be read by observing each frame in turn with a substantially known array of detector elements, each having a limited field of observation, producing a set of observed values for each frame. Modified values, indicative of the record entries of the frame, may be generated utilizing both the limitations on the range of the possible values of the record entries and predetermined manipulations of the observed values. As a result, any fractional misregistration between the record entries and the detector elements may be corrected. Position markers may be employed to determine where reading should occur. To distinguish local faults in the position markers, the markers may be observed in turn and values indicating marker position may be stored for a predetermined number of preceding markers. It may then be determined whether each observed valve is outside of a selected trend established by the stored valves for more than a predetermined margin. If so, the effect of that value is reduced. Markers may be employed at the leading ends of the channels and at locations along the channels, and may be of distinctive shape to maximize the information contained therein. A semiconductor device employing a field effect transistor structure may be employed to read the data on the medium.
REFERENCES:
patent: 3072889 (1963-01-01), Willcox
patent: 3322935 (1963-07-01), Wyke
patent: 3437793 (1969-04-01), Van Berkel et al.
patent: 3542286 (1970-11-01), Binkley et al.
patent: 3718914 (1973-02-01), Muller
patent: 3727183 (1973-04-01), Le Mar
patent: 3780266 (1973-12-01), Mudsam et al.
patent: 3795902 (1974-03-01), Russell
patent: 3872445 (1976-03-01), Pease et al.
patent: 3896295 (1975-07-01), La Plante
patent: 3919697 (1975-11-01), Walker
patent: 3959784 (1976-05-01), Meier
patent: 4009388 (1977-02-01), Seachman
patent: 4087166 (1978-05-01), Rothbart et al.
patent: 4118735 (1978-10-01), Wilkinson
patent: 4149269 (1979-04-01), be et al.
patent: 4198701 (1980-04-01), Reddersen et al.
patent: 4224480 (1980-09-01), Satoh
patent: 4228468 (1980-10-01), Hogan
patent: 4251126 (1981-02-01), Minoura et al.
patent: 4286318 (1981-08-01), Immink
patent: 4327377 (1982-04-01), Takken
patent: 4416001 (1983-11-01), Ackerman
patent: 4430563 (1984-02-01), Harrington
patent: 4465939 (1984-08-01), Tamura
patent: 4497055 (1985-01-01), Hoshino
Patents Abstracts of Japan, vol. 6, No. 237 (P-157) (1115) Nov. 25, 1982.
Patents Abstracts of Japan, vol. 1, No. 129, Oct. 25, 1977, p. 5869 E 77.
Faber Alan
Storage Research Pty. Ltd.
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