Patents by Inventor Akihiko Shiraishi
Akihiko Shiraishi 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: 9267008Abstract: A heat-shrinkable white film including an amorphous polyethylene terephthalate; a cyclic olefin resin having a glass transition temperature of 100° C. or higher; and a polyester elastomer having a Vicat softening point of 150° C. or lower.Type: GrantFiled: March 27, 2012Date of Patent: February 23, 2016Assignee: C.I. KASEI COMPANY, LIMITEDInventors: Akihiko Shiraishi, Masahiro Watanabe
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Publication number: 20150018489Abstract: A heat-shrinkable white film including an amorphous polyethylene terephthalate; a cyclic olefin resin having a glass transition temperature of 100° C. or higher; and a polyester elastomer having a Vicat softening point of 150° C. or lower.Type: ApplicationFiled: March 27, 2012Publication date: January 15, 2015Applicant: C.I. Kasei Company, LimitedInventors: Akihiko Shiraishi, Masahiro Watanabe
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Patent number: 7456870Abstract: An object of this invention is to eliminate cumbersomeness and improve the photographer's convenience by inputting settings to an image sensing apparatus by the user. To achieve this object, an image sensing apparatus includes a memory which stores information on a photographing frequency in association with object distance information and brightness information, an acquisition device which acquires an object brightness value on the basis of image information sensed by an image sensing device, and a control device which refers to the memory to detect an object distance having the highest photographing frequency among object distances corresponding to the acquired object brightness value, and controls image sensing operation on the basis of the detected object distance information.Type: GrantFiled: October 7, 2003Date of Patent: November 25, 2008Assignee: Canon Kabushiki KaishaInventors: Akihiko Shiraishi, Kota Terayama, Yasuyoshi Miyazaki
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Patent number: 6977676Abstract: In a camera control system capable of, in a video conference, remote surveillance or the like, issuing an instruction for a camera posture or the like, the user desires, on the moment in a simple way, an image with a small angle of view and a panoramic image are transmitted to a personal computer to be individually displayed. This arrangement constructs a system whereby the user can see not only a detailed image the user desires now but also an image surrounding the detailed image in substantially real time. Further, another arrangement for sensing an image reflected by a convex mirror which is constructed such that a central portion thereof is formed as a low-curvature surface and a peripheral portion thereof is formed as a high-curvature surface enables a panoramic image having a high resolution in a desired portion thereof to be obtained by using only one image sensor.Type: GrantFiled: July 1, 1999Date of Patent: December 20, 2005Assignee: Canon Kabushiki KaishaInventors: Mamoru Sato, Akihiko Shiraishi
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Publication number: 20040080663Abstract: An object of this invention is to eliminate cumbersomeness and improve the photographer's convenience by inputting settings to an image sensing apparatus by the user. To achieve this object, an image sensing apparatus includes a memory which stores information on a photographing frequency in association with object distance information and brightness information, an acquisition device which acquires an object brightness value on the basis of image information sensed by an image sensing device, and a control device which refers to the memory to detect an object distance having the highest photographing frequency among object distances corresponding to the acquired object brightness value, and controls image sensing operation on the basis of the detected object distance information.Type: ApplicationFiled: October 8, 2003Publication date: April 29, 2004Inventors: Akihiko Shiraishi, Kota Terayama, Yasuyoshi Miyazaki
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Publication number: 20020192412Abstract: The present invention relates to a heat shrinkable polyolefin film preferably for a label to be attached to a PET bottle and the like. Improvement of in the lightness, the solvent sealing property, and transparency is an object. The heat shrinkable polyolefin film according to the present invention is a laminate comprising surface layers composed of a resin material containing a specific cyclic olefin resin as a main component, and an intermediate layer composed of a resin material containing a polyethylene resin as a main component.Type: ApplicationFiled: April 11, 2002Publication date: December 19, 2002Inventors: Shoichi Satani, Naoki Taya, Akihiko Shiraishi
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Patent number: 5737017Abstract: A color image pickup apparatus includes a solid state image pickup element having one of four types of color filters, comprising first to fourth color filters, arranged on an element surface. Respective color filters are arranged to be separated from each other by a two-pitch interval in horizontal and vertical directions. The first to fourth color filters are arranged to form a square sampling structure.Type: GrantFiled: May 10, 1996Date of Patent: April 7, 1998Assignee: Canon Kabushiki KaishaInventors: Yoshiro Udagawa, Akihiko Shiraishi, Akira Mamiya
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Patent number: 5589882Abstract: An optical low-pass filter includes an optical member formed of a material capable of absorbing light in a particular wavelength range, e.g., an infrared range. The optical member has a plurality of ridge-like portions formed on at least one surface thereof at a predetermined pitch. The ridge-like portions comprise a phase type diffraction grating which has a low-pass filtering effect with respect to bundles of optical transmission rays passing therethrough.Type: GrantFiled: May 31, 1995Date of Patent: December 31, 1996Assignee: Canon Kabushiki KaishaInventors: Akihiko Shiraishi, Kazuo Fujibayashi, Tetsuo Kuwabara
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Patent number: 5581298Abstract: Disclosed is a color signal processing apparatus in which at least three types of color signals corresponding to filters are received from a solid-state image pickup element on which at least three types of color filters are formed, and linear matrix conversion of the at least three types of color signals determined by spectral characteristics of the corresponding color filters is performed to generate R, G, and B signals.Type: GrantFiled: October 12, 1995Date of Patent: December 3, 1996Assignee: Canon Kabushiki KaishaInventors: Takashi Sasaki, Akihiko Shiraishi, Mayumi Yamamoto
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Patent number: 5541648Abstract: A color image pickup apparatus includes an image pickup element, an optical low-pass filter, and a memory. The image pickup element has four types of color filters which are arranged to form an offset sampling structure in which color filters of different colors are repeatedly arranged at a two-pixel period in the horizontal direction, and color filters of different colors are repeatedly arranged at a two-pixel period in the vertical direction while being offset in the horizontal direction by one pixel. The optical low-pass filter has an optical member for splitting an incident light beam into two light beams separated from each other by a distance D in a direction inclined clockwise or counterclockwise at an angle .theta. with respect to a scanning direction of the image pickup element, the distance D satisfying conditions defined by1.6PhPv/.vertline.Ph sin .theta.+2Pv cos .theta..vertline..ltoreq.D.ltoreq.2.4PhPv/.vertline.Ph sin .theta.+2Pv cos .theta..vertline.(0.ltoreq..theta..ltoreq..pi.Type: GrantFiled: October 7, 1993Date of Patent: July 30, 1996Assignee: Canon Kabushiki KaishaInventors: Yoshiro Udagawa, Akihiko Shiraishi, Akira Mamiya
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Patent number: 5477381Abstract: An image sensing apparatus for converting an object image formed by a photographic lens into electrical signals includes a solid-state image sensor having an offset sampling structure for converting the image into electrical signals. An optical low-pass filter is positioned between the lens and the solid-state image sensor and includes at least two optical members each for splitting a light beam into plural light beams having two different propagation directions from each other.Type: GrantFiled: December 23, 1992Date of Patent: December 19, 1995Assignee: Canon Kabushiki KaishaInventors: Takashi Sasaki, Kan Takaiwa, Akihiko Shiraishi
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Patent number: 5461418Abstract: In a color image pickup apparatus having an objective lens or a member for removably mounting the objective lens, an image pickup device for converting the image of an object formed by the objective lens into a color electrical signal, and an optical low-pass filter comprising a diffraction grating and disposed between the rear end of the objective lens and the image pickup device, the optical low-pass filter satisfies the condition.0.7f.sub.C .ltoreq.1/d.ltoreq.f.sub.Y -0.7f.sub.C,where d is the pitch of the diffraction grating, f.sub.Y is the spatial frequency for making the luminance signal of the image pickup means into a specimen, and f.sub.C is the spatial frequency for making the color signal of the image pickup means into a specimen.Type: GrantFiled: December 10, 1993Date of Patent: October 24, 1995Assignee: Canon Kabushiki KaishaInventor: Akihiko Shiraishi
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Patent number: 5457494Abstract: An image pickup signal processing apparatus for generating a digital luminance signal and digital color difference signals from output signals from a solid-state image pickup element, includes subtracters for generating primary color signals or color difference signals from the output signals from the solid-state image pickup element, and an A/D converter for converting the primary color or color difference signals output from the subtracters into digital signals.Type: GrantFiled: November 20, 1989Date of Patent: October 10, 1995Assignee: Canon Kabushiki KaishaInventors: Akira Suga, Takashi Sasaki, Kazuyuki Matoba, Akihiko Shiraishi
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Patent number: 5452129Abstract: A video camera equipped with an optical low-pass filter, which is to be arranged in front of a solid state imaging device. The optical low-pass filter comprises: a first sub-refractive plate adapted to separate an incident ray of light by a separation distance of d.sub.1 in a direction deviated 45.degree. clockwise or counterclockwise with respect to the horizontal scanning direction of the solid state imaging device; a second sub-refractive plate adapted to separate an incident ray of light by a separation distance of d.sub.2 in a direction parallel to the horizontal scanning direction of the solid state imaging device; and a third sub-refractive plate adapted to separate an incident ray of light by a separation distance of d.sub.1 in a direction perpendicular to the direction of separation of the first sub-refractive plate; wherein the second sub-refractive plate is arranged between the first and third sub-refractive plates; and wherein the condition: d.sub.1 >2d.sub.2 is satisfied.Type: GrantFiled: July 27, 1993Date of Patent: September 19, 1995Assignee: Canon Kabushiki KaishaInventor: Akihiko Shiraishi
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Patent number: 5450129Abstract: An image processing apparatus for converting different television standard signals includes an image pickup apparatus for selectively outputting an image signal of one of (i) a first television scheme and (ii) a second television scheme having a larger number of pixels than the first television scheme. An image pickup device is provided having a number of pixels corresponding to the first television scheme. A memory is provided for storing an output image signal from the image pickup device at a frequency corresponding to the first television scheme. An interpolation signal generating circuit is provided for generating an interpolation signal by adding a constant signal to a television signal corresponding to the second television scheme for compensating for an output of the second television signal. Video signal forming circuitry is also provided for forming a video signal by combining the signal read out from the memory and the interpolation signal generated by the interpolation signal generating circuitry.Type: GrantFiled: January 24, 1994Date of Patent: September 12, 1995Assignee: Canon Kabushiki KaishaInventors: Kazuyuki Matoba, Akira Suga, Akihiko Shiraishi
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Patent number: 5280347Abstract: A color image sensing device comprises an image sensor having pixels of the offset sampling structure in which the horizontal pitch is P.sub.H, the vertical pitch is P.sub.V and the horizontal offset amount is P.sub.H /2, and a color filter array comprising three or four types of color filters provided in one-to-one relation to the pixels of the image sensor. The color filter array has the offset sampling structure in which those types of color filters are each arranged with the horizontal pitch of 2P.sub.H, the vertical pitch of 2P.sub.V and the horizontal offset amount of P.sub.H.Type: GrantFiled: October 25, 1991Date of Patent: January 18, 1994Assignee: Canon Kabushiki KaishaInventors: Akihiko Shiraishi, Akira Suga, Takashi Sasaki
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Patent number: 5253046Abstract: A color image pickup apparatus for converting an object image into an electrical signal having luminance information and color information includes an image pickup element arranged in a rectangular matrix having pixels arranged at a horizontal pitch P.sub.H and a vertical pitch P.sub.V, a color filter array having first color filters arranged in correspondence with the pixels and having an offset sampling structure having a horizontal pitch 2P.sub.H and a vertical pitch P.sub.V and offset by P.sub.H in a horizontal direction, and second and third color filters each having a rectangular matrix sampling structure having a horizontal pitch 2P.sub.H and a vertical pitch 2P.sub.Type: GrantFiled: March 5, 1992Date of Patent: October 12, 1993Assignee: Canon Kabushiki KaishaInventor: Akihiko Shiraishi
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Patent number: 5249041Abstract: A color image pickup apparatus having: an image pickup device in which a color filter array is provided, the color filter array being composed of color filters of three or more colors disposed in such a manner that, assuming that the horizontal scanning directional pitch of the color filters is PH and the vertical scanning directional pitch of the same is PV, the color filters of the same color are disposed at a horizontal scanning directional pitch of 2PH and a vertical scanning directional pitch of 2PV while being offset by PH in the horizontal scanning direction.Type: GrantFiled: June 17, 1992Date of Patent: September 28, 1993Assignee: Canon Kabushiki KaishaInventor: Akihiko Shiraishi
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Patent number: 5202756Abstract: Disclosed is a color signal processing apparatus in which at least three types of color signals corresponding to filters are received from a solid-state image pickup element on which at least three types of color filters are formed, and linear matrix conversion of the at least three types of color signals determined by spectral characteristics of the corresponding color filters is performed to generate R, G, and B signals.Type: GrantFiled: July 16, 1992Date of Patent: April 13, 1993Assignee: Canon Kabushiki KaishaInventors: Takashi Sasaki, Akihiko Shiraishi, Mayumi Yamamoto
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Patent number: 5146320Abstract: A color image pickup apparatus having: an image pickup device in which a color filter array is provided, the color filter array being composed of color filters of three or more colors disposed in such a manner that, assuming that the horizontal scanning directional pitch of the color filters is PH and the vertical scanning directional pitch of the same is Pv, the color filters of the same color are disposed at a horizontal scanning directional pitch of 2PH and a vertical scanning directional pitch of 2Pv while being offset by PH in the horizontal scanning direction.Type: GrantFiled: August 6, 1991Date of Patent: September 8, 1992Assignee: Canon Kabushiki KaishaInventor: Akihiko Shiraishi