Inventor

OHNO EIJI

JP103 patents

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

OHNO EIJI

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Method for recording and reproducing information on and from an optical disk having a read-only recorded zone and a writable and readable zone using a spot laser light

Optical information recording method and apparatus

Optical information recording medium and its manufacturing method and apparatus

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

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 information recording medium and method for producing the same

Recording and reproducing method of optical information 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

Optical information recording medium and method of designing its structure

Optical information recording medium and method of manufacture

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

Method and apparatus for erasing and recording information using three power levels

Optical data recording disc with protrusion between clamping area and center hole

Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information

Optical disk, method for producing the same, and apparatus for producing the same

Optical information recording medium

Optical information recording medium and manufacturing method

Optical information recording disk and method for manufacturing the same

Method for manufacturing an optical information recording medium

Method of measuring a film thickness of multilayer thin film

Magnetron sputtering apparatus and method

Method for fabricating optical information storage medium

Optical information recording medium

Optical data recording medium and manufacturing method for the same

Method and apparatus of optical information recording medium, and optical information recording medium

Optical information recording medium and method for manufacturing the same

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

Reversible optical information recording medium

Optical information recording member comprising Au, TeO2 and Te

Optical data recording disc with protrusion between clamping area and center hole

Optical data recording medium with protrusion bonded between center hole and clamping area

Optical data recording disc with protrusion between clamping area and center hole

Optical data recording disc with protrusion between clamping area and center hole

Optical data recording medium and manufacturing method for the same, and a method for clamping the optical data recording medium

(unassigned)

Optical information recording media and optical information read/write device

PANASONIC CORP

Method of manufacturing multilayer optical information recording medium

MATSUSHITA ELECTRIC IND INC LT

Optical information recording medium and method of designing its structure