Inventor

SUGAYA TOSHIHIRO

JP38 patents

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

SUGAYA TOSHIHIRO

TOSHIBA KK

Information recording apparatus, information reproducing apparatus, and information distribution system

Optical disk and optical disk apparatus where information is recorded having a specific track pitch and as a plurality of pit trains, each including a plurality of substantially trapezoidal pits

Information recording medium with index header

Optical disk having radial lands and grooves, and boundary recognition marks, and optical disk apparatus for emitting a light beam to an optical disk having a plurality of error correction blocks after boundary recognition marks

Optical recording and reproducing apparatus

Information recording medium with index header

Optical recording and reproducing apparatus

Information recording apparatus, information reproducing apparatus, and information distribution system

Optical disk and optical disk apparatus

Noise reduction system for optical record and reproduction apparatus using auto-power controlled semiconductor laser device

Magnetic disk having data area and index servo area and servo system for positioning read/write head on magnetic disk

Servo system for a magnetic disk memory having spiral tracks

Mail-order shopping system, and DVD and adapter both for use in the mail-order shopping system

Optical disk having reduced track pitch and optical disk playback apparatus containing the same

Magnetic disk having an index area and a limited number of radially extending servo sections

Optical disk and optical disk apparatus

Optical disk with sectional trapezoidal pits and optical disk apparatus

Optical disk and optical disk apparatus

Removable disk drive having two heads formed with a gimbal structure

Noise reduction system for optical record and reproduction apparatus using auto-power controlled semiconductor laser device

Head positioning control method and apparatus

Head access mechanism for moving heads

Magnetic disk having an index area and a limited number of radially extending servo sections

Magnetic disk apparatus having magnetic head with pre-erase gap

Linear actuator for moving a recording/reading head in an access direction relative to a recording disc

Information recording apparatus, information reproducing apparatus, and information distribution system

Optical disk and optical disk apparatus

Optical disc, optical disc apparatus, and optical disc reproducing method

Single-sided triple layer optical disc

Optical disc, optical disc manufacturing method, and optical disc apparatus

Optical recording medium, information reproduction apparatus, and information recording/reproduction apparatus

Optical disc, optical disc apparatus, optical disk reproducing method, and digital work publication

TOKYO SHIBAURA ELECTRIC CO

System for detecting the position of a read-write head on a disk recording medium having servo sectors with three or more servo patterns

System for detecting position of a read-write head in seek operation on a disk memory having data servo spectors

Optical disk having specified track pitch, and optical disk apparatus

SAKAI CHEMICAL INDUSTRY CO

Method for producing fine powder of metallic nickel comprised of fine spherical particles

KURARAY CO

Copper-based catalyst precursor, method for manufacturing same, and hydrogenation method

MEMORY TECH CORP

Optical disc and optical disc device