Patents by Inventor Masahiro Sakamoto
Masahiro Sakamoto 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: 8004724Abstract: An image reading apparatus for reading an image on an original includes a reading unit for optically reading the image of the original while the image is illuminated by light from a light source; a moving unit for moving the reading unit relative to the original; a position signal generator for outputting a position signal in accordance with movement of the reading unit by the moving unit; a lighting control unit for controlling the light source for lighting for a first period in synchronism with the position signal; and an output control unit for generating a control signal for outputting an image signal corresponding to the image read by the reading unit after the light source lights for the first period and for outputting the image signal for a second period in synchronism with the control signal.Type: GrantFiled: December 5, 2006Date of Patent: August 23, 2011Assignee: Canon Kabushiki KaishaInventor: Masahiro Sakamoto
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Publication number: 20110025790Abstract: Small and large flat electrodes and between which alternating current voltage is applied are touch on respective outer side surfaces of an ink bag of each of main ink tanks to so as to face each other. Surface area (B) of the large electrode is set equal to a surface area of the largest outer side surface of the main ink tank, for example, so as to be much different from surface area (A) of the small electrode. The surface area (A) of the small electrode is set to about one tenth of the surface area (B).Type: ApplicationFiled: July 21, 2010Publication date: February 3, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Kouichi Serizawa, Masahiro Sakamoto
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Publication number: 20100142006Abstract: An original scanning apparatus is described that scans an original placed on an original placing plane line by line by moving a scanning unit including a plurality of light-receiving elements that are arranged in a prescribed direction in a direction perpendicular to the prescribed direction. The original scanning apparatus includes: a pattern unit that is provided in a vicinity of a side of the rectangular original placing plane extending along a moving direction of the scanning unit; a control unit configured to calculate drive information in the moving direction per line-scanning cycle of the scanning unit based on a result of scanning the pattern unit; and a driving circuit configured to feed back the calculated drive information so as to control the scanning unit to thereby drive the scanning unit in the moving direction.Type: ApplicationFiled: November 25, 2009Publication date: June 10, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Masahiro Sakamoto
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Publication number: 20070146813Abstract: An image reading apparatus for reading an image on an original includes reading means for optically reading the image of the original while the image is illuminated by light from a light source; moving means for moving the reading means relative to the original; position signal generating means for outputting a position signal in accordance with movement of the reading means by the moving means; lighting control means for controlling the light source for lighting for a first period in synchronism with the position signal; output control means for generating a control signal for outputting an image signal corresponding to the image read by the reading means after the light source lights for the first period and for outputting the image signal for a second period in synchronism with the control signal.Type: ApplicationFiled: December 5, 2006Publication date: June 28, 2007Applicant: CANON KABUSHIKI KAISHAInventor: Masahiro Sakamoto
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Publication number: 20050073726Abstract: An image processing device connected to a scanner unit for generating a first image signal has a first bidirectional interface for receiving a second image signal from an external computer and a second bidirectional interface for transmitting the first or second image signal to a printer unit. The second bidirectional interface receives a first status signal related to the printer unit and the first bidirectional interface transmits the first status signal and a second status signal related to the scanner unit to the external computer. Therefore, the external computer, which is able to process image data to be printed by the printer unit, can be advised of the status of the printer unit without being directly connected thereto. Therefore, in a first copy mode, the computer can process the image data, while in a second copy mode, the device itself can process the image data.Type: ApplicationFiled: December 28, 1995Publication date: April 7, 2005Inventors: HIROSHI NOBUTA, HIROMICHI NAGANE, MASAHIRO SAKAMOTO, KOICHI MATSUMOTO
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Patent number: 6289137Abstract: An image processing apparatus or a facsimile apparatus or the like is constructed by an input unit for inputting image data, a data conversion unit for converting density characteristics of image data inputted by the input unit, and an output unit such as ink jet printer, laser beam printer, or the like for outputting the image data at a predetermined resolution. The data conversion unit converts density characteristics so as to almost equalize densities even when a resolution of the image data that is outputted by the output unit differs. The data conversion unit converts the density characteristics of the input image data on the basis of a luminance/density conversion table formed every resolution of the image data that is outputted by the output unit. The resolution of the output image data is higher than the resolution of the input image data.Type: GrantFiled: December 15, 1997Date of Patent: September 11, 2001Assignee: Canon Kabushiki KaishaInventors: Norio Sugiyama, Sadasuke Kurahayashi, Masahiro Sakamoto, Katsutoshi Ushida
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Patent number: 6194068Abstract: A wire for a wire saw apparatus for slicing a material includes an element wire, a binder coated on an outside circumferential surface of the element wire, and abrasive grains dispersed in the binder. The element wire is a high tensile strength metal wire, the binder is a material such as an organic or inorganic material other than a metal, and the abrasive grains are held on a surface of the element wire by the binder. The element wire is also made by either a natural quartz glass or a high purity synthesis quartz glass.Type: GrantFiled: November 7, 1997Date of Patent: February 27, 2001Assignee: Hitachi Cable Ltd.Inventors: Seishiro Ohashi, Shinichi Okada, Kenji Asano, Kazunori Suzuki, Masahiro Sakamoto
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Patent number: 5880314Abstract: The present invention can provide cosmetic formulations comprising hydrochalcone compounds of the general formula (I): ##STR1## in which R.sup.1 to R.sup.4 are each independently H or --COR, and R is an alkyl group having 1-20 carbon atoms as effective components, which are highly effective in suppressing pigment deposition and depigmenting the skin and which are very safe to the skin and highly stable during storage.Type: GrantFiled: July 18, 1997Date of Patent: March 9, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Tatsuro Shinomiya, Hiroko Kaminaga, Shohei Nozaki, Masahiro Sakamoto, Shigeharu Morimoto
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Patent number: 5787195Abstract: An image processing apparatus having: an input unit for inputting image data; a unit for producing a plurality of parameters from a region consisting of data for the input object pixel and peripheral pixels; and a discriminating unit for discriminating to what extent the region preferably, just the object pixel is to be regarded as character image or halftone image, in accordance with correlation of the plurality of parameters.Type: GrantFiled: December 5, 1996Date of Patent: July 28, 1998Assignee: Canon Kabushiki KaishaInventors: Takuya Tsujimoto, Masahiro Sakamoto
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Patent number: 5719686Abstract: Transmission of an entered image, in the color mode, without passing memory means, and, in the monochromatic mode, after storage once in the memory means allows to avoid unnecessarily long image entering operation for image reading in case of monochromatic images, and also to provide an image transmitting apparatus of a smaller size and a lower cost in comparison with the conventional color communication apparatus. Also processing of a received color image without passing memory means and of a received monochromatic image through the memory means allows to store such monochromatic image even in the absence of a recording material and to provide an image receiving apparatus of a smaller size and a lower cost in comparison with the conventional color communication apparatus.Type: GrantFiled: December 15, 1994Date of Patent: February 17, 1998Assignee: Canon Kabushiki KaishaInventors: Masahiro Sakamoto, Hiroshi Nobuta
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Patent number: 5608539Abstract: An image processor inputs coded image data, which is comprised of a plurality of resolution levels, and image processor thereafter rearranges and stores the coded image data into image memory 4 so that the resolution levels of the coded image data can be stored into a consecutive address area of the image memory 4. Thereafter DMA controller 11 reads out the coded image data stored in the image memory 4 into decoder 7 by accessing the consecutive address area of the image memory 4. The decoder 7 decodes the coded image data transferred at high speed.Type: GrantFiled: January 23, 1995Date of Patent: March 4, 1997Assignee: Canon Kabushiki KaishaInventor: Masahiro Sakamoto
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Patent number: 5360725Abstract: A method of producing rice cybrid cells includes the steps of irradiating with X-rays to first rice protoplasts containing a first useful gene in the cytoplasm thereof to selectively destroy the nuclei thereof only; treating second rice protoplasts containing a second useful gene in the nucleus thereof with about 10 - 30 mM of iodoacetamide, about 0.1 - 0.5 mM Rhodamine 6G or about 10 - 30 mM iodoacetate to selectively deactivate the cytoplasm; and fusing the treated first and second protoplasts to form cybrid cells which have only the nucleus containing the first useful gene and have only the cytoplasm containing the second useful gene.Type: GrantFiled: May 10, 1993Date of Patent: November 1, 1994Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Hiromori Akagi, Masahiro Sakamoto, Tatsuhito Fujimura
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Patent number: 5268286Abstract: A biocatalyst is immobilized with a graft product of a polymer and saponified polyvinyl acetate containing a stilbazolium group as a photo-crosslinking group. The polymer is preferably gelatin, collagen, starch, cellulose, gum arabic, tragacanth gum, carrageenan, mannan, dextrin or alginic acid. The graft product is prepared by bonding the polymer to the polyvinyl acetate, either directly through functional groups of the polymer and polyvinyl acetate or through a crosslinking agent. The polymer provides affinity for the biocatalyst and by grafting the polymer to the saponified polyvinyl acetate, damage to cells upon immobilization is reduced. A liquid composition containing a biocatalyst and the graft product is added to an aqueous solution of an inorganic salt or an organic salt to form a granular gel and the gel is irradiated with actinic rays to cure the gel.Type: GrantFiled: March 6, 1991Date of Patent: December 7, 1993Assignees: Ojo Kako Co., Ltd., Kansai Paint Co., Ltd.Inventors: Takeshi Kobayashi, Shinji Iijima, Masamichi Kamihira, Mikiko Hata, Takamitsu Iida, Masahiro Sakamoto, Hiroshi Itoh, Naoki Isobe
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Patent number: 5267055Abstract: An image processing apparatus has an image sensor for inputting image data obtained by reading an image, a shading correction processing unit for correcting variations in image data input from the image sensor on the basis of correction data, an arithmetic operation processing unit for performing image processing of the image data input from the image sensor, and a memory for storing the correction data to be supplied to the shading correction processing unit and image data to be supplied to the arithmetic operation processing unit.Type: GrantFiled: September 12, 1991Date of Patent: November 30, 1993Assignee: Canon Kabushiki KaishaInventors: Masahiro Sakamoto, Yasuyuki Shinada, Shinichi Ishida
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Patent number: 5235436Abstract: In an image processing apparatus, comprising: image data sent from a transmission-side apparatus is received, and discrimination is performed as to whether the image data received is a character image or a halftone image segmentation processing is then performed on the reception data. When the discrimination means discrimitaes that the received image data is a character image, interpolation processing is performed on the basis of reception image data in a predetermined area, to perform segmentation processing of image data of a pixel of interest, and so the apparatus can perform segmentation processing of input data by simple control at high speed and low cost.Type: GrantFiled: March 1, 1991Date of Patent: August 10, 1993Assignee: Canon Kabushiki KaishaInventors: Masahiro Sakamoto, Yasuhide Ueno, Mamoru Osada, Junnosuke Kataoka
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Patent number: 5198741Abstract: A drive control system for a stepping motor which stores values for the current driving each phase of the motor in data tables. A central processing unit drives the motor in accordance with the current values stored in the data tables. The current values are stored in the data table with corresponding addresses. The current values are read out sequentially from the addresses in the data tables. Each time the address is incremented by 1, the magnitude of the angle of rotation of the motor is set so that it is always the same.Type: GrantFiled: July 31, 1990Date of Patent: March 30, 1993Assignee: Canon Kabushiki KaishaInventors: Yasuyuki Shinada, Masahiro Sakamoto, Junnosuke Kataoka
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Patent number: 5178949Abstract: The present invention relates to a color-former having microcapsules which comprise an electron-donating colorless dye dispersed in a hydrophobic liquid. The present invention provides a color-former using both an electron-donating colorless dye and a hydrophobic liquid which previously were unable to be used because of the lack of solubility. A uniform and stable dispersion of electron-donating colorless dye in a hydrophobic core liquid is prepared by using oil-soluble non-ionic surfactant.Type: GrantFiled: May 21, 1991Date of Patent: January 12, 1993Assignee: Jujo Paper Co., Ltd.Inventors: Masahiro Sakamoto, Tsutomu Murano, Shozo Harada
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Patent number: 5177422Abstract: The present invention relates to control of motor and strobe pulses in a printer which feeds a paper by a stepping motor and prints data by strobe pulses. A uniform record line density is attained by non-linearly changing currents and interval of phase excitation pulses for trigger of the motor and timing of the strobe pulses.Type: GrantFiled: July 27, 1990Date of Patent: January 5, 1993Assignee: Canon Kabushiki KaishaInventors: Junnosuke Kataoka, Masahiro Sakamoto
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Patent number: 5159470Abstract: According to the present invention, when image data are subjected to quantization processing using an error diffusion method, the generation of a striped pattern which is a cause for deterioration of picture quality in the error diffusion method is prevented. In the present invention, an original image is read and image data are generated. The image data obtained by reading the original image are quantized using an error diffusion method, and the quantized image data can be output and recorded by a thermal-head printer. Furthermore, according to the present invention, an error between the density of an input image and the density of an output image after being subjected to a quantization processing using an error diffusion method is perfectly preserved.Type: GrantFiled: March 30, 1990Date of Patent: October 27, 1992Assignee: Canon Kabushiki KaishaInventors: Shinichi Ishida, Masahiro Sakamoto, Yasuyuki Shinada, Takeshi Ono
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Patent number: 5151640Abstract: A scanning device comprises: a stepping motor; a memory device for storing drive data for driving the stepping motor for each scanning unit which does not correspond to each drive step of the stepping motor; and a motor driving device for driving the stepping motor in accordance with the drive data read from the memory device.Type: GrantFiled: October 31, 1990Date of Patent: September 29, 1992Assignee: Canon Kabushiki KaishaInventors: Masahiro Sakamoto, Junnosuke Kataoka