Inventor

AKAHIRA NOBUO

JP68 patents

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

AKAHIRA NOBUO

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Optical information recording medium comprising a first layer having a phase that is reversibly changeable and a second information layer having a phase that is reversibly changeable

Optical recording medium having two separate recording layers

Optical information recording and reproducing system with overwrite capability and recording medium for use therewith

Optical information recording medium, manufacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus

Optical disk with stop-pulse generating means in a guide groove

Optical information recording medium and optical information recording/reproducing method

Optical information recording medium

Optical information recording medium of phase change type having variably grooved tracks depending on their radial locations

Optical information recording and reproducing apparatus

Method of recording optical information with selective correction in pulse waveform and a recording system therefor

Optical information recording apparatus for recording an input signal having variable width pulse duration and pulse spacing periods

Optical information recording method

Optical recording medium and optical recording/reproducing apparatus

Method and apparatus for timing variable optical information recording

Optical information recording medium, with plural information layers

Recording and reproducing method of optical information recording medium

Optical recording medium having dual recording layers

Optical information recording and reproducing apparatus for multiple layer recording medium

Optical information recording medium having first and second tracks and apparatus for recording to and reproducing from the medium

Optical information recording medium and information recording and reproducing method thereof

Method for manufacturing an optical recording film composed of a metal and an oxide which can undergo an oxidation-reduction reaction upon exposure to a laser beam

Optical information recording medium, a manufacturing method thereof and an optical information recording and reproducing method using the medium

Optical information recording medium and method of designing its structure

Optical information recording medium

Optical information recording medium

Method for determining optimum irradiation conditions in optical data recording

Optical information recording method

Optical information recording apparatus for recording optical information in a phase change type optical recording medium and method therefor

Optical information recording medium and information recording and reproducing method therefor

Optical information recording medium

Optical information recording disk and method for manufacturing the same

Code conversion method and apparatus, code recording medium, code recording apparatus and code reproducing apparatus

Method of measuring a film thickness of multilayer thin film

Optical information recording material and method of recording and reproducing information using same material

Optical information recording medium

Optical information recording medium having convex and concave portions for recording information and an additional portion for condition data, and recording and reproducing apparatus for using the medium

Method of manufacturing optical information recording medium

Optical information recording member comprising Au, TeO2 and Te

Optical information storage material and method of making it

Multi-layer optical information recording medium with pits or grooves

Optical information recording medium manfacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus

Recording/reproducing apparatus for optical information recording medium and optical head

Optical information recording medium and optical information recording and reproducing apparatus

Optical recording disk and method for manufacturing the same

Data storage apparatus

Data storage apparatus for recording and reproducing information on a recording medium by rotating the recording medium at different angular velocities

Optical information recording medium

Optical information recording medium

MATSUSHITA ELECTRIC IND INC LT

Optical information recording medium and method of designing its structure

KIMURA KUNIO

Optical information recording medium of Te, O and Pd and method for making same