Inventor

KOYAMA FUMIO

JP54 patents

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

KOYAMA FUMIO

SEIKO EPSON CORP

Method of and apparatus for reading a two-dimensional bar code symbol and data storage medium

Color correction in image display

Image display apparatus

Clamp and gamma correction circuit, and image display apparatus and electronic machine employing the same

Gamma correction circuit and video display apparatus using the same

Projector with projection lens having a zoom function

Image display apparatus and color signal adjustment device used therein

Focus detection mechanism and optical head and optical storage device that use it

Abnormality prediction device, abnormality prediction system, abnormality prediction method, biological information measuring device, biological information measuring system, and warning notification method

Image processing device and image display device

Color conversion device and image display apparatus having the same

Driving device for liquid crystal panel and image display apparatus

Color correction circuit and image display apparatus including the same

Adjustment of input-output characteristics of image display apparatus

Projector, circuit board, and electronic device provided with said circuit board

Image display device and image display method

Gradation attributes control according to characteristics of image

Information display and information display system

Projector

Method for producing ink jet printer and ink jet printer

Biological information processing device, program, and biological information processing method

TOKYO INST TECH

Superlattice structure

Surface-emitting laser

Beam deflection device

Optical transceiver

Vertical-cavity surface-emitting laser diode and optical transmission apparatus

Vertical-cavity surface-emitting laser diode and optical transmission apparatus

KOYAMA FUMIO

Image processing device and image display device

Image display device, highlighting method

Control method for information display device and an information display device

Image processing device, image display device, and projector

Image display apparatus

Dynamic adjustment of counter electrode voltage of liquid crystal panel according to illumination light control

FUJIFILM BUSINESS INNOVATION CORP

Semiconductor optical amplifier, semiconductor optical amplification device, optical output device, and distance measuring device

Semiconductor optical amplifier, optical output device, and distance measuring device

LUCENT TECHNOLOGIES INC

Optical modulators as monolithically integrated optical isolators

FUMIO KOYAMA

Surface emitting semiconductor laser and manufacturing method thereof

AT & T CORP

Method for preparation of monolithically integrated devices

FUJI XEROX CO LTD

Surface emitting laser and surface emitting laser array

NISHI NIPPON DENKI CO LTD

Target arrangement for a light pulse beam comprising crosswise arranged and grouped phototransistors

SONY CORP

Apparatus, method, network system, recording medium and computer program for processing transmitted information

NAT UNIV CORP YOKOHAMA NAT UNIV

Optical deflection device and LIDAR apparatus

OMRON TATEISI ELECTRONICS CO

Semiconductor luminous element and superlattice structure

FUMIO KOYAMA C O TOKYO INST OF

Surface emitting semiconductor laser and manufacturing method thereof

KONDO TAKASHI

Vertical cavity surface emitting laser, vertical cavity surface emitting laser apparatus, optical transmission apparatus, and information processing apparatus

CANON KK

Red surface emitting laser element, image forming device, and image display apparatus

NOBORI TATSUHIKO

Image display device and image display method

TAKEUCHI TETSUYA

Red surface emitting laser element, image forming device, and image display apparatus

NIRECO CORP

Eddy current mold level measuring device and mold level measuring method

HASEGAWA HIROSHI

Information processing device, arithmetic processing method, and electronic apparatus