Inventor

DEGUCHI TOSHIHISA

JP68 patents

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

DEGUCHI TOSHIHISA

SHARP KK

Disk recording and reproducing device

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

Optical memory medium with predetermined guide tracks and prepits

Optical memory medium with preformed pit arrangement

Method and device for data management in optical recording medium

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

Optical disk recording and reproducing apparatus

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

Recording/reproducing device

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

Optical disk recording/reproducing device

Track counter for optical disk

Magnetooptic memory medium

Magneto-optic memory element

Semiconductor laser driving circuit with control circuit power voltage monitor for preventing inadvertent recording

Recording and reproducing apparatus

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

Disc clamping device

Sync signal detection apparatus for accurately synchronizing reproduced data

Optical disc record reproducing apparatus

Optical disc tracking system with switching of tracking error signals at boundary between track guide and track address

Optical focus position control in optical disc apparatus

Magneto-optical head assembly with improved detection means

Method and device for data management in an optical recording medium

Optical retrieval system for encoding pit angular data and optical recording element thereof

Tracking circuit for an optical information recording and reproducing apparatus

Beam controller for magneto-optical disc memory system

Method of manufacturing optical memory element

Optical system in a magneto-optical memory device

Cartridge case

Optical focus position control in an optical memory system

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

Tracking system for optical disc memory using tracking error signals from main beam and auxiliary beams

Optical memory device having guide tracks shaped for increasing the quality of information signals

Optical retrieval system for encoding pit angular data and optical recording element therefor

Optical memory device with grooves and pits in selected dimensional relationship

Feedback control apparatus in an optical recording and reproducing device

Semiconductor laser driving apparatus

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 element and manufacturing method thereof

Objective lens-driving unit

Magneto-optic recording/playback head assembly

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

Beam controller for magneto-optical disc memory system

Apparatus for reading an optical disk which controls track jumping accurately and stably

Method of disk recording using alternative recording tracks

Optical head in an optical memory device

Data modulation/demodulation system utilizing demodulation clocks that differ in phase

SUMITOMO CHEMICAL CO

Lithium secondary battery