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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Miyatake; Norio
Address:
Hyogo, JP
No. of patents:
12
Patents:












Patent Number Title Of Patent Date Issued
6767697 Magneto-optical disk and method for producing same by initializing with a laser having a predete July 27, 2004
A magneto-optical disk of the present invention includes a substrate and a recording layer disposed above the substrate, and reproduces an information signal by a DWDD system, using light incident from the substrate side. The optical disk further includes a first dielectric layer dis
6628578 Disklike storage medium and tracking method using the same September 30, 2003
A disklike storage medium on which information is recorded at higher density by reducing the redundancy of the address part and a tracking method using the medium are disclosed. The disklike storage medium where a track is divided into areas and address data is recorded in the areas is
6587407 Information reproducing method and information reproducing device July 1, 2003
An information reproducing device for reproducing digital signals with an optical head from an optical disk includes a first equalizer for waveform-equalizing a reproduction signal, an adaptive learning device for renewing the equalization properties of the first waveform equalizer with
6307819 Method of reading magneto-optical recording medium October 23, 2001
A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the
6269056 Recording method for a magneto-optical recording medium for position adjustment of a magnetic he July 31, 2001
A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the
6222797 Position adjustment method of a magnetic head using magneto-optical recording medium, and optica April 24, 2001
A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the
6188649 Method for reading magnetic super resolution type magneto-optical recording medium February 13, 2001
A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the
6018505 Magneto-optical disc apparatus January 25, 2000
In a magneto-optical disc apparatus using an initializing magnetic field generator, the magnetic field generator including a permanent magnet slides on or and floats above a surface of the magneto-optical disc for applying a magnetic field at a position on a track and precede to or f
5986977 Method for reading magnetic super resolution type magneto-optical recording medium November 16, 1999
A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the
5748592 Disk drive apparatus and disk storage medium for high density recording May 5, 1998
A disk drive apparatus is provided that can reproduce data at low bit error rate even if a crosstalk is large. This apparatus comprises means for writing three or more different states of record marks in a read track and adjacent tracks thereof on a disk storage medium, means for detecti
5517472 Magnetic-field generator for use in a magneto-optical disk unit May 14, 1996
A sliding part of a magnetic-field generator is configured to slide above and spaced from a surface of a loaded magneto-optical disk in a floating manner. A magnetic-field generating part, which provides a magnetic field to the magneto-optical disk, includes a magnetic pole disposed on a
5202863 Magneto-optical disk unit compatible with different two types of magneto-optical disks and a mag April 13, 1993
A magneto-optical disk unit has a first magnetic-field generator for generating a magnetic field corresponding to a frequency in a recording signal frequency band and a second magnetic-field generator for generating DC magnetic fields of both north-seeking and south-seeking poles in a










 
 
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