Inventor

KUROKI YUZURU

JP30 patents

Patents

30 patents

US4949326AAug 14, 1990

Optical information recording and reproducing system using optical disks having an error correction function

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD143 citations99

US5051998ASep 24, 1991

Data block deinterleaving and error correction system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD137 citations98

US5023854AJun 11, 1991

Disc having a data read-only area and a data recording arm and a recording reproducing system therefor

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD134 citations98

US5388105AFeb 7, 1995

Method of recording/reproducing optical disk data

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD99 citations96

US5173886ADec 22, 1992

Composite optical disc having both a data read-only area and a data rewritable area, and a recording/reproducing system for use therewith

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD87 citations96

US5077720ADec 31, 1991

Optical information recording and reproducing system and optical disk

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD50 citations96

US4879704ANov 7, 1989

Optical disk, optical disk recording and reproducing apparatus and copy preventive method for optical disks

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD96 citations96

US4823333AApr 18, 1989

Optical disk duplicating apparatus using sector data identification information for controlling duplication

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD59 citations96

US4805046AFeb 14, 1989

Information recording and reproducing apparatus using sectors divided into a plurality of frames and having means for proper storage of the frame data

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD89 citations96

US4653051AMar 24, 1987

Apparatus for detecting and correcting errors on product codes

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD78 citations96

US4969139ANov 6, 1990

Optical information recording and reproducing apparatus having an improved detection system for detecting fouling of a disk or an internal optical system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD36 citations93

US4833663AMay 23, 1989

Information recording/reproducing apparatus for handling defective sectors on an optical disk

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD24 citations93

US4821254AApr 11, 1989

Information recording and reproducing apparatus which detects deterioration of a medium in each sector before recording

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD47 citations93

US4566088AJan 21, 1986

Optical and reversible recording and reproducing apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD45 citations93

US5359584AOct 25, 1994

Data recording/reproducing method and apparatus having means for reliable detection of unrecorded sectors

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD28 citations92

US4986668AJan 22, 1991

Information recording and reproducing apparatus with management of defective sector

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23 citations92

US4885735ADec 5, 1989

Information recording and reproducing apparatus with management of defective sector

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23 citations82

US4742507AMay 3, 1988

Optical information recording and reproducing apparatus having defective-sector marking means

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD21 citations82

US5214635AMay 25, 1993

Optical recording and reproducing apparatus having erasing function with controllable erasing beam

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations63

US4789911ADec 6, 1988

Information recording and reproducing apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations63

KUROKI YUZURU

Patents

Optical information recording and reproducing system using optical disks having an error correction function

Data block deinterleaving and error correction system

Disc having a data read-only area and a data recording arm and a recording reproducing system therefor

Method of recording/reproducing optical disk data

Composite optical disc having both a data read-only area and a data rewritable area, and a recording/reproducing system for use therewith

Optical information recording and reproducing system and optical disk

Optical disk, optical disk recording and reproducing apparatus and copy preventive method for optical disks

Optical disk duplicating apparatus using sector data identification information for controlling duplication

Information recording and reproducing apparatus using sectors divided into a plurality of frames and having means for proper storage of the frame data

Apparatus for detecting and correcting errors on product codes

Optical information recording and reproducing apparatus having an improved detection system for detecting fouling of a disk or an internal optical system

Information recording/reproducing apparatus for handling defective sectors on an optical disk

Information recording and reproducing apparatus which detects deterioration of a medium in each sector before recording

Optical and reversible recording and reproducing apparatus

Data recording/reproducing method and apparatus having means for reliable detection of unrecorded sectors

Information recording and reproducing apparatus with management of defective sector

Information recording and reproducing apparatus with management of defective sector

Optical information recording and reproducing apparatus having defective-sector marking means

Erasable optical disk and optical information recording/reproduction apparatus

Optical disk recording and reading system with directory data access mechanism

Optical disk

Erasable optical disk and optical information recording/reproduction apparatus

Optical information recording/reproducing apparatus

Optical data recording and reproducing apparatus with erase function diagnosis

Abnormal track skipping detection and control arrangement

Apparatus for determining defective or non-used sectors of an optical dish

Data recording/reproducing apparatus

Optical information reproducing apparatus

Optical recording and reproducing apparatus having erasing function with controllable erasing beam

Information recording and reproducing apparatus