Inventor

FUJI HIROSHI

JP79 patents

⚠️ This page may combine multiple inventors who share the name “FUJI HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUJI HIROSHI

SHARP KK

Optical recording medium and optical recording/reproducing device, and manufacturing method of optical recording medium

Magneto-optical recording and reproducing apparatus with layer aperture control

Test-writing recording control method and test-writing recording control apparatus and optical recording medium

Optical information recording/reproducing apparatus having focus error signal compensation

Method for controlling the recording conditions for a second mark using previously determined reproducing conditions for a first mark for optical memory device

Optical recording medium and optical recording/reproducing device, and manufacturing method of optical recording medium

Method and apparatus for tracking correction and optical disk for use therein

Multibeam recording/reproducing apparatus in which direction of movement of plurality of light beams is determined based on order in which each of light beams crosses track

Information recording method and collector and distributor for recording information

Optical recording medium driving apparatus capable of accurately detecting position of optical head

Digital information reproducing apparatus

Information recording and reproducing device with reproduction and automatic gain control circuit

Optical disk formatting system using index mark detecting circuit

Apparatus for recording and reproducing information on and from an optical disk

Optical recording/reproducing device using permissible ranges for the value of an automatic gain control voltage

Optical disk recording/reproducing device

Electro magnetic field generating element, information recording and reproducing head and information recording and reproducing device

Magnetic recording head and magnetic recording device

Optical recording method and device for optimally controlling the width of the recording marks

Interpolating gain amplifier for information reproducing apparatus

Optical reproducing circuit having, a binarized signal pulse compensation circuit

Optical disk device for storing both analog and discrete data and which utilizes both CLV and CAV techniques

Optical device and optical sensor

Reproducing light quantity control method for optical memory device, and reproducing light quantity control device, and optical recording medium

Beam controller for magneto-optical disc memory system

Information write/read head including an optical slit having a light emitting section whose width is shorter than a light beam diffraction limit

Optical reproducing device and optical memory medium

Optical recording medium and reproducing method therefor

Magneto-optical memory apparatus utilizing edges or recording mark to manage data

Recording state detecting apparatus and optical recording medium

Deflecting a light beam in the same direction and speed of a recording medium by a rotating polygon or a holographic disk

Light-amount control device for an optical-disk recording-reproduction apparatus

Information reproducing device

Magnetic head driving circuit with impedance elements to balance auxiliary coil loads

Data reproduction circuit for converting a read analog signal

Information recording and reproducing device employing variable data recording clock rates

Optical memory system for generating a timing control signal for detecting a recorded region through a playback signal

Magneto-optical memory device

Digital signal reproduction apparatus for reading magneto-optical disks

Optical magnetic memory device utilizing non-recorded portions of recording medium to represent data

Optical memory device for recording, reproducing or erasing information onto a recording medium, including a recorded region detecting circuit.

Optical recording medium and optical recording and reproduction apparatus

Analog-to-digital conversion circuit for use in information reproduction apparatuses

Apparatus for recording and reproducing information on and from an optical disk

Beam controller for magneto-optical disc memory system

AGENCY IND SCIENCE TECHN

Optical reproducing and recording method, recording medium, and optical device

SHARP KABUSHIKI KAISAH

Optical reproducing device and optical memory medium

INT SUPERCONDUCTIVITY TECH

Tape-formed oxide superconductor

NEAT SHUJINKI KOGYO KABUSHIKI

Electric dust collector

KOMATSU MFG CO LTD

Control system of transporter vehicle, transporter vehicle, and control method of transporter vehicle