公开(公告)号：DE69325429D1

公开(公告)日：1999-07-29

申请号：DE69325429

申请日：1993-10-20

Applicant: CANON KK

Inventor： YAMAMOTO MASAKUNI ,  MATSUMURA SUSUMU ,  HOSHI HIROAKI ,  YAMAGUCHI EIJI

IPC: G11B7/0045 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105 ,  G11B7/135

Abstract: In a magnetooptical information recording- reproducing apparatus, recording of information is performed such that laser beam is irradiated on a magnetooptical information recording medium via an optical head while applying a magnetic field to the beam irradiated portion of the recording medium onto which information pits are formed by utilizing the difference in the direction of magnetization of thereof. The magnetooptical information recording-reproducing apparatus is provided with a band-like shielding plate which is arranged in an optical path of a reflected light from the recording medium upon application of laser beam thereto in a direction perpendicular to tracks of the recording medium. Reproduction of information recorded on the recording medium is effected by detecting the beam which is not shielded by the shielding plate by use of a photodetector.

公开(公告)号：DE69320501D1

公开(公告)日：1998-10-01

申请号：DE69320501

申请日：1993-02-01

Applicant: CANON KK

Inventor： YAMAMOTO MASAKUNI

IPC: G11B7/13 ,  G11B11/10 ,  G11B11/105

公开(公告)号：DE69231053T2

公开(公告)日：2000-12-21

申请号：DE69231053

申请日：1992-10-23

Applicant: CANON KK

Inventor： MORISHIMA HIDEKI ,  ENDO KIYONOBU ,  MATSUMURA SUSUMU ,  HOSHI HIROAKI ,  HASEGAWA KOYO ,  YAMAMOTO MASAKUNI ,  YAMAGUCHI EIJI ,  IIDA ICHIRO

IPC: G09C1/00 ,  G06F13/00 ,  H04L9/10 ,  H04N7/16 ,  H04N7/167 ,  H04N21/462 ,  H04N21/4623

公开(公告)号：DE69424129T2

公开(公告)日：2000-11-16

申请号：DE69424129

申请日：1994-11-28

Applicant: CANON KK

Inventor： MURAMOTO TOMOTAKA ,  YAMAMOTO MASAKUNI

IPC: H04N5/45 ,  H04N7/08 ,  H04N9/82 ,  H04N9/87 ,  H04N13/00 ,  H04N13/02

Abstract: A stereoscopic image processing apparatus for processing a stereoscopic image signal for a stereoscopic image which is composed of a plurality of images is arranged to receive a plurality of image signals for the plurality of images, to time-base-compress the image signals received, to form a composite image signal by combining the time-base-compressed image signals, to multiplex an information signal for information which is other than images but corresponds to the contents of the plurality of images, and to output the composite image signal to a transmission route. The arrangement enables the apparatus to combine the plurality of image signals for the images forming the stereoscopic image and to transmit the composite image signal together with the information signal for information which is other than images but corresponds to the content of the plurality of images.

公开(公告)号：DE69231053D1

公开(公告)日：2000-06-21

申请号：DE69231053

申请日：1992-10-23

Applicant: CANON KK

Inventor： MORISHIMA HIDEKI ,  ENDO KIYONOBU ,  MATSUMURA SUSUMU ,  HOSHI HIROAKI ,  HASEGAWA KOYO ,  YAMAMOTO MASAKUNI ,  YAMAGUCHI EIJI ,  IIDA ICHIRO

IPC: G09C1/00 ,  G06F13/00 ,  H04L9/10 ,  H04N7/16 ,  H04N7/167 ,  H04N21/462 ,  H04N21/4623

公开(公告)号：DE69128067D1

公开(公告)日：1997-12-04

申请号：DE69128067

申请日：1991-11-26

Applicant: CANON KK

Inventor： YAMAGUCHI EIJI ,  MATSUMURA SUSUMU ,  HOSHI HIROAKI ,  YAMAMOTO MASAKUNI ,  MORISHIMA HIDEKI

IPC: G11B11/10 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/125 ,  G11B11/105

Abstract: An optical information recording/reproducing apparatus is disclosed. The apparatus is provided with a device for irradiating a preheating light beam onto an information track of an optical information recording medium. Simultaneously, a recording/reproducing light beam is irradiated onto a light spot of the preheating light beam on the recording medium. The light intensity of the preheating light beam is varied in accordance with a detection result regarding an environmental temperature of the apparatus obtained by the detector. By such the construction, the recording/reproducing condition of information is kept constant irrespective of the environmental temperature.

公开(公告)号：DE69121774T2

公开(公告)日：1997-01-23

申请号：DE69121774

申请日：1991-05-24

Applicant: CANON KK

Inventor： YAMAMOTO MASAKUNI

IPC: G11B7/09 ,  G06F15/80 ,  G11B7/13

Abstract: An optical information processing apparatus for at least either recording or reproducing information by irradiating converged light beam on a recording medium. The optical information processing apparatus comprises a light detector for receiving the light beam, a neuro network for inducing a tracking or focusing error signal from an output signal from the light detector, and servo means for performing a tracking or focusing servo in accordance with an error signal induced by the neuro network.

公开(公告)号：DE69325429T2

公开(公告)日：1999-11-25

申请号：DE69325429

申请日：1993-10-20

Applicant: CANON KK

Inventor： YAMAMOTO MASAKUNI ,  MATSUMURA SUSUMU ,  HOSHI HIROAKI ,  YAMAGUCHI EIJI

IPC: G11B7/0045 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105 ,  G11B7/135

Abstract: In a magnetooptical information recording- reproducing apparatus, recording of information is performed such that laser beam is irradiated on a magnetooptical information recording medium via an optical head while applying a magnetic field to the beam irradiated portion of the recording medium onto which information pits are formed by utilizing the difference in the direction of magnetization of thereof. The magnetooptical information recording-reproducing apparatus is provided with a band-like shielding plate which is arranged in an optical path of a reflected light from the recording medium upon application of laser beam thereto in a direction perpendicular to tracks of the recording medium. Reproduction of information recorded on the recording medium is effected by detecting the beam which is not shielded by the shielding plate by use of a photodetector.

公开(公告)号：DE69320501T2

公开(公告)日：1999-02-18

申请号：DE69320501

申请日：1993-02-01

Applicant: CANON KK

Inventor： YAMAMOTO MASAKUNI

IPC: G11B7/13 ,  G11B11/10 ,  G11B11/105

公开(公告)号：DE69225861T2

公开(公告)日：1998-11-12

申请号：DE69225861

申请日：1992-10-30

Applicant: CANON KK

Inventor： YAMAMOTO MASAKUNI

IPC: G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/013 ,  G11B7/13 ,  G11B20/16

Abstract: Information represented by arrangement of codes of three or more kinds is recorded on a recording medium having a track as following manner. The codes of the information is caused to correspond to information pits of three or more kinds respectively. The information pit corresponding to each code is formed on the track so as to be arranged along the track. Each information pit is recognized by the length thereof along the longitudinal direction of the track and the distance between the center of the pit in the longitudinal direction of the track and a reference position determined by a reference clock.