Patent Examiner: Hindi; Nabil
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Anti-skating control of a positioning servo system
Inventor: Fennema | Patent Number: 5142516
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Information recording medium having dummy tracks and information recording and reproducing apparatus
Inventor: Fukushima, et al. | Patent Number: 5138599
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Reducing amplitude variations of optical disk readback signals and increasing reliability of track-crossing counts
Inventor: Fennema, et al. | Patent Number: 5138594
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Optical read/write apparatus with improved tracking performance
Inventor: Fujita | Patent Number: 5138592
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Two axis electromagnetic actuator
Inventor: Getreuer, et al. | Patent Number: 5136558
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Calibrating optical disk recorders to some parameters during disk spin up while deferring calibration of other parameters
Inventor: Baca, et al. | Patent Number: 5134602
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Optical head in use with an optical recording/reproducing apparatus
Inventor: Ishika | Patent Number: 5132959
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Controls for optical disk relating to accessing and utilization of such disk
Inventor: Kulakowski, et al. | Patent Number: 5132954
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Optical recording/reproducing apparatus using a light spot switching means for centering beams on an information track
Inventor: Karaki, et al. | Patent Number: 5130965
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Light scanning device
Inventor: Nishizawa | Patent Number: 5126995
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Information reproducing apparatus
Inventor: Shiba, et al. | Patent Number: 5126987
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Optical servo system for magnetic disk
Inventor: Farnsworth, et al. | Patent Number: 5121371
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Optical card, a card holder and an apparatus for recording, reproducing and erasing information on and from the optical card
Inventor: Ohta, et al. | Patent Number: 5117415
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Information reproducing apparatus for detecting a reproduced area on a disc
Inventor: Ishikawa, et al. | Patent Number: 5115422
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Optical pickup head having a hologram-associated objective lens and optical information processing apparatus using the same
Inventor: Komma, et al. | Patent Number: 5111448
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Method of managing defective sectors in a disk-shaped information recording medium and an apparatus for performing the same
Inventor: Fukushima, et al. | Patent Number: 5111444
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Optical recording apparatus
Inventor: Yokogawa | Patent Number: 5111443
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Optical axis monitoring device
Inventor: Ikeya | Patent Number: 5109376
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Optical disk drive
Inventor: Maeda, et al. | Patent Number: 5109369
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Optical device using a resilient member
Inventor: Ohta, et al. | Patent Number: 5109368
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Slip-off preventing tracking control apparatus
Inventor: Moriya, et al. | Patent Number: 5109366
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Optical recording/reproducing apparatus
Inventor: Tsuyuguchi, et al. | Patent Number: 5107479
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Optical recording/reproducing device using permissible ranges for the value of an automatic gain control voltage
Inventor: Fuji, et al. | Patent Number: 5107473
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Optical disc recording/reproducing control
Inventor: Segawa, et al. | Patent Number: 5105416
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Detecting magnetooptic and intensity-modulated optical signals with the same detector
Inventor: Tayefeh | Patent Number: 5105415
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Apparatus for detecting and correcting focusing and tracking errors
Inventor: Ishika | Patent Number: 5105411
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Optical information recording/reproducing apparatus
Inventor: Ohuchida, et al. | Patent Number: 5101389
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Optical recording medium and optical recording/reproducing apparatus
Inventor: Nishiuchi, et al. | Patent Number: 5097464
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Optical head
Inventor: Tanoshima, et al. | Patent Number: 5097456
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Disc control apparatus
Inventor: Ishida, et al. | Patent Number: 5089999
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Apparatus for optical disc memory with correction pattern and master disc cutting apparatus
Inventor: Maeda, et al. | Patent Number: 5084860
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Information recording method using a modulated recording beam at high, intermediate and low power levels
Inventor: Miyauchi, et al. | Patent Number: 5084857
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Cutting apparatus for an optical disc
Inventor: Henmi, et al. | Patent Number: 5084856
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Feedback control apparatus in an optical recording and reproducing device
Inventor: Deguchi, et al. | Patent Number: 5084848
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Optical tracking servo apparatus
Inventor: Tsuyuguchi, et al. | Patent Number: 5083302
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Optical card recording and reproducing device
Inventor: Matoba, et al. | Patent Number: 5083301
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Method and apparatus for optimizing video recording and reproduction
Inventor: Dugan, et al. | Patent Number: 5083211
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Track-jump device for a disc drive apparatus
Inventor: Kuwabara | Patent Number: 5079756
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Optical memory device and apparatus for manufacturing the same
Inventor: Nakayama, et al. | Patent Number: 5077725
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Data recording and/or reproducing method and data recording medium
Inventor: Sako, et al. | Patent Number: 5077721
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Wedge prism assembly for optical information storage
Inventor: Marshall, et al. | Patent Number: 5070493
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Method of determining the monitor sensitivity of, and method and system for controlling a radiation emitting arrangement, and optical recording and/or reproducing apparatus including such a system
Inventor: McGee | Patent Number: 5067122
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Optical head apparatus
Inventor: Toide, et al. | Patent Number: 5066138
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Disc memory apparatus
Inventor: Seko, et al. | Patent Number: 5065382
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Record carrier scanning apparatus with feedback control system for controlling scanning point position and velocity
Inventor: Bierhoff | Patent Number: 5036506
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Optical head devices for use in disc players
Inventor: Mitsumori, et al. | Patent Number: 5005162