Inventor

HASEGAWA KOYO

JP19 patents

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

HASEGAWA KOYO

CANON KK

Image communication apparatus for communicating binary and multi-value color image data

Magnetic head driving device and magnetooptical recording apparatus

Magnetic field generator in which an end face of a magnetic material member projects from man end face of magnetic field generating cores

Magneto-optical recording method using a magneto-optical recording medium having two or more magnetic layers to allow recording and reproduction to be effected simultaneously and magneto-optical recording medium used in the method

Magnetooptical recording reproducing apparatus and method for determining the power of an irradiating light beam on the basis of a detected amplitude of a recording signal

Method of recording information on a recording medium having at least two magnetic layers

Information processing method and system

Magneto-optical recording apparatus capable of both magnetic modulation and light modulation recording

Magneto-optic recording apparatus and method therefor

Optical head device having a light splitter with a diffraction grating structure

Magnetic field generating device

Magneto-optical recording method of erasing a portion of a first recording domain to form a crescent-shaped second recording domain

Information recording carrier

ALPINE ELECTRONICS INC

Method for communication among mobile units and vehicular communication apparatus

Multimedia information providing method and apparatus

DIGITAL D J INC

Broadcast system with associated data capabilities

DIGITAL DJ INC

Broadcast data system with multiple-tuner receiver

DIGITAL DJ

Method and apparatus for communicating information using a data tuner

HASEGAWA KOYO

Radar monitoring device