Patents by Inventor Takayuki Tsuboi
Takayuki Tsuboi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6040880Abstract: A display device includes a spatial light modulator capable of writing therein an image and capable of reading therefrom the written image by converting the image, and an illumination device which transmissively illuminates the spatial light modulator through respective different paths for writing the image and for reading the image.Type: GrantFiled: December 10, 1997Date of Patent: March 21, 2000Assignee: Canon Kabushiki KaishaInventors: Takayuki Tsuboi, Mineto Yagyu, Akihiko Nagano, Hiroshi Kikuchi
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Patent number: 6041190Abstract: An image display apparatus for displaying an image recorded on a film, includes a spatial light modulation device which can maintain a recorded image in a non-energization state, an illumination device for illuminating the spatial light modulation device with light, a switching mechanism for switching between a first state in which the film is located between the spatial light modulation device and the illumination device and a second state in which the film is not located between the spatial light modulation device and the illumination device, and a control circuit for activating the spatial light modulation device and the illumination device in the first state when an image recorded on the film is to be recorded on the spatial light modulation device, and activating the illumination device in the second state when the spatial light modulation device on which the image is recorded is to be observed.Type: GrantFiled: May 30, 1997Date of Patent: March 21, 2000Assignee: Canon Kabushiki KaishaInventors: Hiroshi Kikuchi, Takayuki Tsuboi
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Patent number: 5945753Abstract: In a motor, a rotor made of a permanent magnet which is equally divided in the circumferential direction to be alternately magnetized to different poles is formed into a cylindrical shape. The first coil, the rotor, and the second coil are sequentially arranged in the axial direction of the rotor. The first outer and inner magnetic poles excited by the first coil are set to oppose the outer and inner circumferential surfaces, respectively, of the rotor, and the second outer and inner magnetic poles excited by the second coil are set to oppose the outer and inner circumferential surfaces, respectively, of the rotor. An electric element is arranged at a position to oppose, across a predetermined gap, the circumferential surface of the permanent magnet not covered with the first or second outer magnetic pole. Alternatively, an electric element and a circuit pattern are formed on a connection member that connects the first and second outer magnetic poles to each other.Type: GrantFiled: February 20, 1998Date of Patent: August 31, 1999Assignee: Canon Kabushiki KaishaInventors: Hiroaki Maegawa, Takayuki Tsuboi, Chikara Aoshima
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Patent number: 5940632Abstract: A magnification change-over device is arranged to be highly suitable for a camera of the kind having a photo-taking lens and a viewfinder arranged independently of each other. The device includes the photo-taking lens having an image magnification which is variable; the viewfinder which is arranged to have an image magnification thereof also variable; an operating device for varying the image magnification of the viewfinder; a detecting device for detecting the magnifying state of the viewfinder; and a driving apparatus for driving the photo-taking lens according to a detection signal of the detecting device when a shutter release operation is performed. After a magnification setting operation is performed on the viewfinder, the change-over device changes the magnification of the photo-taking lens according to the magnification of the viewfinder when a photographing operation is actually performed.Type: GrantFiled: June 7, 1995Date of Patent: August 17, 1999Assignee: Canon Kabushiki KaishaInventor: Takayuki Tsuboi
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Patent number: 5819121Abstract: A magnification change-over device is arranged to be highly suitable for a camera of the kind having a photo-taking lens and a viewfinder arranged independently of each other. The device includes the photo-taking lens having an image magnification which is variable; the viewfinder which is arranged to have an image magnification thereof also variable; an operating device for varying the image magnification of the viewfinder; a detecting device for detecting the magnifying state of the viewfinder; and a driving apparatus for driving the photo-taking lens according to a detection signal of the detecting device when a shutter release operation is performed. After a magnification setting operation is performed on the viewfinder, the change-over device changes the magnification of the photo-taking lens according to the magnification of the viewfinder when a photographing operation is actually performed.Type: GrantFiled: June 7, 1995Date of Patent: October 6, 1998Assignee: Canon Kabushiki KaishaInventor: Takayuki Tsuboi
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Patent number: 5792279Abstract: An equipment adapted to use a solar cell, or a device adapted to this equipment, includes a first unit for setting the equipment in a first state in which the equipment is in use, and in a second state in which the equipment is not in use, and a second unit for setting the equipment in a third state for heat insulation, which is different from the first and second states, under a condition in which the solar cell generates electricity.Type: GrantFiled: March 26, 1997Date of Patent: August 11, 1998Assignee: Canon Kabushiki KaishaInventors: Takayuki Tsuboi, Toshinori Sato, Hiroshi Kikuchi
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Patent number: 5774749Abstract: A magnification change-over device is arranged to be highly suitable for a camera of the kind having a photo-taking lens and a viewfinder arranged independently of each other. The device includes the photo-taking lens having an image magnification which is variable; the viewfinder which is arranged to have an image magnification thereof also variable; an operating device for varying the image magnification of the viewfinder; a detecting device for detecting the magnifying state of the viewfinder; and a driving apparatus for driving the photo-taking lens according to a detection signal of the detecting device when a shutter release operation is performed. After a magnification setting operation is performed on the viewfinder, the change-over device changes the magnification of the photo-taking lens according to the magnification of the viewfinder when a photographing operation is actually performed.Type: GrantFiled: June 7, 1995Date of Patent: June 30, 1998Assignee: Canon Kabushiki KaishaInventor: Takayuki Tsuboi
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Patent number: 5752096Abstract: A camera includes a plurality of camera operation mechanisms, a sun gear which rotates by means of a motor, a planetary gear which revolves around the sun gear, a plurality of output gears each capable of meshing with the planetary gear by means of a revolution of the planetary gear. The plurality of output gears transmit power to the plurality of camera operation mechanisms, respectively. A holding member switchable from a first state in which the planetary gear is allowed to revolve freely to a second state in which the planetary gear is held at a revolution position where the planetary gear is in mesh with one of the plurality of output gears. The holding member includes a moving member rotatable in interlocked relation to the revolution of the planetary gear. The holding member switches from the first state to the second state by means of a movement of the moving member in a direction different from a direction of rotation of the moving member.Type: GrantFiled: October 22, 1996Date of Patent: May 12, 1998Assignee: Canon Kabushiki KaishaInventors: Kazushige Ichino, Ryoichi Suzuki, Takayuki Tsuboi, Yoshiaki Hamada, Yuji Fujihara, Yoshiyuki Kaneko
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Patent number: 5752095Abstract: A magnification change-over device is arranged to be highly suitable for a camera of the kind having a photo-taking lens and a viewfinder arranged independently of each other. The device includes the photo-taking lens having an image magnification which is variable; the viewfinder which is arranged to have an image magnification thereof also variable; an operating device for varying the image magnification of the viewfinder; a detecting device for detecting the magnifying state of the viewfinder; and a driving apparatus for driving the photo-taking lens according to a detection signal of the detecting device when a shutter release operation is performed. After a magnification setting operation is performed on the viewfinder, the change-over device changes the magnification of the photo-taking lens according to the magnification of the viewfinder when a photographing operation is actually performed.Type: GrantFiled: June 7, 1995Date of Patent: May 12, 1998Assignee: Canon Kabushiki KaishaInventor: Takayuki Tsuboi
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Patent number: 5682564Abstract: A viewfinder device is arranged to have a pair of light deflecting members disposed in front and in rear of an objective lens, to drive the front light deflecting member to guide light of a left side area of a field of view and light of a right side area of the field of view alternately to the objective lens, and to drive the rear light deflecting member to guide light fluxes thus obtained from the objective lens alternately to the eye of a person taking a sight of the field of view. This arrangement enables the viewfinder device to make a wide range of field sightable and yet permits a reduction in size of the objective lens.Type: GrantFiled: February 7, 1995Date of Patent: October 28, 1997Assignee: Canon Kabushiki KaishaInventor: Takayuki Tsuboi
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Patent number: 5623142Abstract: An optical type encoder is comprised of a gauge member and a sensor portion moved relative to each other with the movement of an object to be detected. The gauge member has a plurality of slit rows comprising a plurality of slits formed at intervals along the direction of movement of the object to be detected, and a plurality of slit intervals formed by the corresponding slits in the slit rows are made partly equal. The sensor portion has at locations corresponding to the slit rows position detecting type light receiving means for receiving light beams from light projecting means passed through the plurality of slits rows of the gauge member, and the position information of the object to be detected is detected by the utilization of signals from these light receiving means.Type: GrantFiled: May 30, 1995Date of Patent: April 22, 1997Assignee: Canon Kabushiki KaishaInventors: Takayuki Tsuboi, Hiroyuki Hase
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Patent number: 5610678Abstract: An apparatus adapted for use with a camera including a camera body and an independent optical viewfinder. The apparatus includes a following device that drives a photographing field of the camera body to follow a viewfinder field of the optical viewfinder.Type: GrantFiled: December 29, 1994Date of Patent: March 11, 1997Assignee: Canon Kabushiki KaishaInventors: Takayuki Tsuboi, Yasuhiro Toyoda
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Patent number: 5239331Abstract: A device for braking an electric motor as the drive source of an operating mechanism in camera by means of an electrical circuit is disclosed. This circuit includes a detector for levels of the rotation speed of the motor or of factors of influencing the rotation speed sensed when the motor is supplied with current flowing in a direction to activate the operating mechanism, and control means responsive to the output of the detector for altering the time for which a current flow of reversed direction is supplied to brake the motor.Type: GrantFiled: March 24, 1992Date of Patent: August 24, 1993Assignee: Canon Kabushiki KaishaInventors: Takashi Kobe, Takayuki Tsuboi
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Patent number: 5223873Abstract: A magnification change-over device is arranged to be highly suitable for a camera of the kind having a photo-taking lens and a viewfinder arranged independently of each other. The device includes the photo-taking lens having an image magnification which is variable; the viewfinder which is arranged to have an image magnification thereof also variable; an operating device for varying the image magnification of the viewfinder; a detecting device for detecting the magnifying state of the viewfinder; and a driving apparatus for driving the photo-taking lens according to a detection signal of the detecting device when a shutter release operation is performed. After a magnification setting operation is performed on the viewfinder, the change-over device changes the magnification of the photo-taking lens according to the magnification of the viewfinder when a photographing operation is actually performed.Type: GrantFiled: February 5, 1992Date of Patent: June 29, 1993Assignee: Canon Kabushiki KaishaInventor: Takayuki Tsuboi
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Patent number: 5136324Abstract: An optical system adjusting device for a camera comprises a first driver for driving the optical system of the camera; a second driver for driving the optical system at a finer pitch than the first driver; and a control system arranged to divide a degree to which the optical system is to be driven into a first degree to which the optical system is to be driven by the first driver and a second degree to which the optical system is to be driven by the second driver and to cause the first driver to drive the optical system to the first degree and the second driver to drive the optical system to the second degree.Type: GrantFiled: June 6, 1991Date of Patent: August 4, 1992Assignee: Canon Kabushiki KaishaInventors: Takayuki Tsuboi, Isao Nakazawa, Hiroshi Maeno, Yasuhiko Shiomi
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Patent number: 5134435Abstract: A camera including shutter blades; a driving device which, upon receipt of electric energy, drives the shutter blades to open; an optical detecting device for optically detecting the operating state of the shutter blades; and a control circuit which controls the opening speed of the shutter blades by changing the amount of electric energy supplied to the driving device in response to the output of the optical detecting device.Type: GrantFiled: April 10, 1991Date of Patent: July 28, 1992Assignee: Canon Kabushiki KaishaInventors: Takayuki Tsuboi, Takashi Kobe
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Patent number: 5083148Abstract: A driving power transmitting device for a camera having an electric motor, a first driving member to be moved by the driving power of the motor, first transmitting device for engagement with the first driving member when the first driving member moves in a predetermined direction by a predetermined distance, and to cause the transmitting path of the driving power of the motor to change by that engagement, a second driving member to be moved by the driving power of the motor, a follow-up member for following up the second driving member in delay, and second transmitting means for causing the transmitting path of the driving power of the motor to change when the follow-up member has caught up with the second driving member, as the second driving member has stopped, whereby the driving power of the motor is branchingly transmitted to each mechanism of the camera.Type: GrantFiled: April 29, 1991Date of Patent: January 21, 1992Assignee: Canon Kabushiki KaishaInventor: Takayuki Tsuboi
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Patent number: 5023647Abstract: An automatic status discriminator has a distance measuring unit for calculating the distance to a target object to provide a signal corresponding to the distance. A reflection coefficient calculation unit calculates the reflection coefficient of the target object on the basis of the signal provided from the distance measuring unit. A light intensity measuring unit provides signals respectively corresponding to the brightness of the target object and the brightness of a region near the target object. An adjusting unit adjusts the signal corresponding to the brightness of the target object on the basis of the reflection coefficient obtained from the reflection coefficient calculation unit to provide the adjusted signal. A status discriminating means compares the signal corresponding to the brightness of the region near the target object with the output from the adjusting unit to thereby discriminate the status of the target object.Type: GrantFiled: December 20, 1989Date of Patent: June 11, 1991Assignee: Canon Kabushiki KaishaInventors: Yasuhiko Shiomi, Takayuki Tsuboi
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Patent number: 4982218Abstract: A camera comprises a photo taking optical system; driving means for driving the photo taking optical system; a shutter; switching means for causing transmission of the driving force of the driving means to the photo taking optical system to be changed over to the shutter; and control means for controlling the shutter by converting the opening time of the shutter into the driving degree of the driving means.Type: GrantFiled: December 14, 1988Date of Patent: January 1, 1991Assignee: Canon Kabushiki KaishaInventors: Takayuki Tsuboi, Isao Nakazawa, Hiroshi Maeno, Yasuhiko Shiomi
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Patent number: D336310Type: GrantFiled: February 26, 1991Date of Patent: June 8, 1993Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Fukushima, Takayuki Tsuboi