Inventor

MAEDA SHIGEMI

JP91 patents

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

MAEDA SHIGEMI

SHARP KK

Disk type recording medium and disk recording and reproducing device

Method and apparatus for recording and reproducing information in black on a rewritable recording medium

Disk recording and reproducing device

Data recording/reproducing apparatus of simultaneously performing both reproducing and recording from and in a single recording medium

Optical disk recording/reproducing device utilizing a constant angular velocity method with a constant linear velocity formatted optical disk

Optical disk and optical disk apparatus

Disk type recording medium having zones with address information recorded in grooves and recording and reproducing device therefor

Disk-shaped recording medium and disk recording or reproducing device

Disk-shaped recording medium with a groove section having a wobbling side wall

Method and apparatus for controlling digital copying of digitally recorded information

Data recording/reproducing apparatus with alternating access of compressed works

Method and device for data management in optical recording medium

Recording/reproducing device

Information recording and reproducing apparatus

Recording/reproducing device

Recording/reproducing device

Optical disk recording/reproducing device

Adaptive waveform equalization for viterbi-decodable signal and signal quality evaluation of viterbi-decodable signal

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

Information reproducing apparatus for properly synchronizing the reproducing of recorded information

Information recording and reproducing device providing faster access time to a recording medium

Method for managing information on a storage media without losing information due to effects

Recording and reproducing apparatus

Disk recording checking method for determining if a disk is defective by the number of errors present

Sync signal detection apparatus for accurately synchronizing reproduced data

Optical disc record reproducing apparatus

Optical reproducing device and control method thereof

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

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

Instruction controlled audio visual system

Optical recording device and optical recording method, control program for the optical recording device, and computer-readable recording medium recording the control program

Optical reproduction apparatus

Magneto-optical recording medium and magneto-optical recording and reproducing device capable of controlling reproduction power based on long recorded marks

Method and arrangement for recording/reproducing compressed program information on a recording medium containing a plurality of programs

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

Optical card recording and reproducing device

Magneto-optical memory device

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.

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

Method of disk recording using alternative recording tracks

Keyboard operated audio visual system

ADACHI YOSHIHISA

Recording parameter setting device and method using pulse sequences

Recording/reproducing device and method using pulse sequences and information recording medium

Recording/reproducing device and method using pulse sequences, and information recording medium

SONY CORP

Optical disc and optical disc drive

Optical disc and optical drive

YAMAMOTO MASAKI

Optical information storage medium reproduction apparatus and control method of the same

HITACHI LTD

Apparatus and method for recording/reproducing magneto-optical information

MORI GO

Optical information recording medium and optical information processing apparatus