Patents by Inventor Masafumi Kamei
Masafumi Kamei 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: 8320029Abstract: When an original conveying unit that rotates about a rotation center 901 reaches an opening angle 906, an image is read using a line sensor, and a detected object is determined as being white dust on a platen glass. When it further reaches an opening angle 908, an image is again read using the line sensor, and a detected object is determined as being black dust on the platen glass. When it further reaches an opening angle 910, an image is again read using the line sensor, and a detected object is determined as being dust on a reference white plate with which the original conveying unit is provided in a state of facing a reading position where the line sensor performs reading.Type: GrantFiled: June 1, 2010Date of Patent: November 27, 2012Assignee: Canon Kabushiki KaishaInventor: Masafumi Kamei
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Publication number: 20100309530Abstract: When an original conveying unit that rotates about a rotation center 901 reaches an opening angle 906, an image is read using a line sensor, and a detected object is determined as being white dust on a platen glass. When it further reaches an opening angle 908, an image is again read using the line sensor, and a detected object is determined as being black dust on the platen glass. When it further reaches an opening angle 910, an image is again read using the line sensor, and a detected object is determined as being dust on a reference white plate with which the original conveying unit is provided in a state of facing a reading position where the line sensor performs reading.Type: ApplicationFiled: June 1, 2010Publication date: December 9, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Masafumi Kamei
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Patent number: 7782503Abstract: An image reading apparatus reads an image from a document being simultaneously fed by the apparatus. A document feeder unit feeds the document on a original plate. A first image reading unit reads an image from the fed document at a first document-read position on the original plate. A second image reading unit reads an image from the fed document at a second document-read position located at a predetermined distance from the first document-read position in a document feeding direction. An abnormal pixel detection unit detects abnormal pixels resulting from rubbish moved between the first document-read position and second document-read position on the original plate together with the document.Type: GrantFiled: January 17, 2006Date of Patent: August 24, 2010Assignee: Canon Kabushiki KaishaInventors: Katsuhiro Ishido, Shinichiro Wakahara, Shouhei Takeda, Jiro Futagawa, Yuichi Makino, Takashi Soya, Masafumi Kamei, Tetsuro Fukusaka, Kazunori Togashi
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Patent number: 7719726Abstract: There is provided an image reading apparatus for acquiring a read signal of an image by receiving and photoelectrically converting a light reflected from a document. The location of an alien substance on an original plate is detected based on a reflected light received by a light receiving unit adapted to receive a light reflected from a document. When an alien substance is detected, an illumination unit selectively illuminates the location in which the alien substance has been detected. Also, a message which prompts cleaning of the alien substance is displayed. A method of displaying the alien substance location are also provided. Thereby, the image reading apparatus of the present invention can assists a user in cleaning the alien substance such as a dust or dirt on the original plate.Type: GrantFiled: October 3, 2006Date of Patent: May 18, 2010Assignee: Canon Kabushiki KaishaInventors: Masafumi Kamei, Tetsuro Fukusaka, Kazunori Togashi, Katsuhiro Ishido, Takashi Soya, Yuichi Makino, Jiro Futagawa, Shohei Takeda, Shinichiro Wakahara
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Patent number: 7453699Abstract: A digital electronic apparatus includes a plurality of units and a cable. The plurality of units have metallic housings and are combined such that surfaces of the metallic housings are opposed to each other. The cable is laid on a surface of the metallic housing of at least one of the units. The surface on which the cable is laid is other than the surfaces of the metallic housings that are opposed to each other.Type: GrantFiled: January 19, 2007Date of Patent: November 18, 2008Assignee: Canon Kabushiki KaishaInventors: Hideho Inagawa, Hiroyuki Yamaguchi, Shin'ichi Nishimura, Daishiro Sekijima, Tsunao Hombo, Masafumi Kamei
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Publication number: 20070291324Abstract: There is provided an image reading apparatus for acquiring a read signal of an image by receiving and photoelectrically converting a light reflected from a document. The location of an alien substance on an original plate is detected based on a reflected light received by a light receiving unit adapted to receive a light reflected from a document. When an alien substance is detected, an illumination unit selectively illuminates the location in which the alien substance has been detected. Also, a message which prompts cleaning of the alien substance is displayed. A method of displaying the alien substance location are also provided. Thereby, the image reading apparatus of the present invention can assists a user in cleaning the alien substance such as a dust or dirt on the original plate.Type: ApplicationFiled: October 3, 2006Publication date: December 20, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Masafumi Kamei, Tetsuro Fukusaka, Kazunori Togashi, Katsuhiro Ishido, Takashi Soya, Yuichi Makino, Jiro Futagawa, Shohei Takeda, Shinichiro Wakahara
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Publication number: 20070117427Abstract: A digital electronic apparatus includes a plurality of units and a cable. The plurality of units have metallic housings and are combined such that surfaces of the metallic housings are opposed to each other. The cable is laid on a surface of the metallic housing of at least one of the units. The surface on which the cable is laid is other than the surfaces of the metallic housings that are opposed to each other.Type: ApplicationFiled: January 19, 2007Publication date: May 24, 2007Applicant: Canon Kabushiki KaishaInventors: Hideho Inagawa, Hiroyuki Yamaguchi, Shin'ichi Nishimura, Daishiro Sekijima, Tsunao Hombo, Masafumi Kamei
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Patent number: 7189923Abstract: A digital electronic apparatus includes a plurality of units and a cable. The plurality of units have metallic housings and are combined such that surfaces of the metallic housings are opposed to each other. The cable is laid on a surface of the metallic housing of at least one of the units. The surface on which the cable is laid is other than the surfaces of the metallic housings that are opposed to each other.Type: GrantFiled: December 23, 2004Date of Patent: March 13, 2007Assignee: Canon Kabushiki KaishaInventors: Hideho Inagawa, Hiroyuki Yamaguchi, Shin′ichi Nishimura, Daishiro Sekijima, Tsunao Hombo, Masafumi Kamei
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Publication number: 20060170990Abstract: An image reading apparatus reads an image from a document being simultaneously fed by the apparatus. A document feeder unit feeds the document on a original plate. A first image reading unit reads an image from the fed document at a first document-read position on the original plate. A second image reading unit reads an image from the fed document at a second document-read position located at a predetermined distance from the first document-read position in a document feeding direction. An abnormal pixel detection unit detects abnormal pixels resulting from rubbish moved between the first document-read position and second document-read position on the original plate together with the document.Type: ApplicationFiled: January 17, 2006Publication date: August 3, 2006Inventors: Katsuhiro Ishido, Shinichiro Wakahara, Shouhei Takeda, Jiro Futagawa, Yuichi Makino, Takashi Soya, Masafumi Kamei, Tetsuro Fukusaka, Kazunori Togashi
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Publication number: 20050139369Abstract: A digital electronic apparatus includes a plurality of units and a cable. The plurality of units have metallic housings and are combined such that surfaces of the metallic housings are opposed to each other. The cable is laid on a surface of the metallic housing of at least one of the units. The surface on which the cable is laid is other than the surfaces of the metallic housings that are opposed to each other.Type: ApplicationFiled: December 23, 2004Publication date: June 30, 2005Applicant: CANON KABUSHIKI KAISHIInventors: Hideho Inagawa, Hiroyuki Yamaguchi, Shin'ichi Nishimura, Daishiro Sekijima, Tsunao Hombo, Masafumi Kamei
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Patent number: 6493830Abstract: Video data (default data in case of a black original) output from a CCD line sensor 405 upon reading an image while a light source is kept OFF corresponds to beat noise contained in video data obtained upon reading an image while the light source is ON. After the beat noise data is stored, the correction data stored in a correction data storage unit is subtracted from video data read by a normal technique while the light source is ON in a correction memory, thus executing correction for removing beat noise. After the beat noise is removed in this way, when an image is formed under the control of a printer control unit, an image free from any beat noise can be obtained as an output image.Type: GrantFiled: June 30, 1999Date of Patent: December 10, 2002Assignee: Canon Kabushiki KaishaInventor: Masafumi Kamei
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Publication number: 20020120881Abstract: Video data (default data in case of a black original) output from a CCD line sensor 405 upon reading an image while a light source is kept OFF corresponds to beat noise contained in video data obtained upon reading an image while the light source is ON. After the beat noise data is stored, the correction data stored in a correction data storage unit is subtracted from video data read by a normal technique while the light source is ON in a correction memory, thus executing correction for removing beat noise. After the beat noise is removed in this way, when an image is formed under the control of a printer control unit, an image free from any beat noise can be obtained as an output image.Type: ApplicationFiled: June 30, 1999Publication date: August 29, 2002Inventor: MASAFUMI KAMEI
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Patent number: 6225934Abstract: This invention provides an image reading method and apparatus which can prevent a large difference from being produced between the color tones of the read image and the original image. A plurality of signals output from an image sensor (101) are A/D-converted into a plurality of digital signals by A/D conversion circuits (105), a predetermined one of the A/D-converted digital signals is compared with a predetermined reference level by a comparator (108), a low-pass filter (109) removes any high-frequency component from the comparison result, and the output from the low-pass filter (109) is controlled to be input to the A/D conversion circuits (105) as a reference voltage for determining the input range of each A/D conversion circuit (105).Type: GrantFiled: July 24, 1998Date of Patent: May 1, 2001Assignee: Canon Kabushiki KaishaInventors: Kazuhito Ohashi, Noriyoshi Chizawa, Masafumi Kamei, Takashi Sugiura
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Patent number: 5956087Abstract: A linear image sensor includes N arrays of photoelectric converting pixels, wherein N is an even integer at least equal to 2. Each array is formed by arranging, with a predetermined pixel pitch in a first direction of the array, a plurality of pixels, and each of the pixels is so shaped that the area per unit length of the pixel decreases progressively from the center of the pixel both in the first direction of the array and in a second direction perpendicular to the first direction. The N arrays themselves are provided with a mutual distance from each other of M/2 times the pixel pitch in the second direction and are mutually displaced by 1/N of the pixel pitch in the first direction so as to form a mutually interpolating arrangement, wherein M is a positive integer equal to at least 1 and wherein M and N are independent of each other.Type: GrantFiled: October 29, 1996Date of Patent: September 21, 1999Assignee: Canon Kabushiki KaishaInventors: Tsutomu Takayama, Kazuhito Ohashi, Seiichirou Satomura, Tomoichirou Ohta, Noriyoshi Chizawa, Masafumi Kamei, Takashi Sugiura
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Patent number: 5913099Abstract: An image forming apparatus comprises an image memory unit for storing image information, an image rotation unit for applying predetermined rotation to the image information read from the image memory unit, an image forming unit for forming an image on an output medium based on the image information derived directly from the image memory unit or by the image rotation unit, and a control unit for controlling the rotation of the image by the image rotation unit such that a staple position of the output medium formed by the image forming unit comes to a predetermined position.Type: GrantFiled: January 30, 1997Date of Patent: June 15, 1999Assignee: Canon Kabushiki KaishaInventors: Masafumi Kamei, Yoshihiko Suzuki, Satoru Kutsuwada
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Patent number: 5699546Abstract: A memory management control device and a memory management control method capable of preventing run away of an image processing apparatus caused by a rewrite to a memory, are provided. In rewriting a program stored in a flash memory 402 of a controller 400 included in an image processing apparatus, an operating state detector 500 detects the operating state of the image processing apparatus and transmits the detection result to an external apparatus 9. On the basis of this detected operating state, the external apparatus 9 performs rewrite control for the flash memory 402. If the image processing apparatus is in operation, or is in an intermediate state, an abnormal state, or a wait state, a rewrite action is executed after the state is canceled.Type: GrantFiled: September 1, 1995Date of Patent: December 16, 1997Assignee: Canon Kabushiki KaishaInventors: Akinobu Nishikata, Tomobumi Nakayama, Yoshihiko Suzuki, Isamu Sato, Hisatsugu Tahara, Noriyoshi Chizawa, Shokyo Koh, Masafumi Kamei, Akio Ito, Hirohiko Tashiro
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Patent number: 5691827Abstract: An image processing apparatus for converting color images into monochromatic pattern images. The image processing apparatus includes: means for detecting the area of a color image; means for converting a color image into a monochromatic pattern image; and control means for varying such image processing in accordance with the result of detection made by the means for detecting the area. When a thin line is detected in a color area, the method of processing is determined based on the width of the detected thin line. For example, when the width of the thin line is smaller than a predetermined value, the area of such thin line may be outputted as a plain image instead of a pattern image so that it may easily be seen or recognized. The contour of a color area may be made conspicuous by combining a plain image and a pattern image.Type: GrantFiled: May 2, 1995Date of Patent: November 25, 1997Assignee: Canon Kabushiki KaishaInventors: Masafumi Kamei, Yoshiyuki Suzuki, Shizuo Hasegawa, Hiroyuki Ichikawa, Yoshihiro Funamizu, Akio Itoh, Yoshinori Abe
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Patent number: 5485288Abstract: An image processing apparatus for converting color images into monochromatic pattern images. The image processing apparatus includes: means for detecting the area of a color image; means for converting a color image into a monochromatic pattern image; and control means for varying such image processing in accordance with the result of detection made by the means for detecting the area. When a thin line is detected in a color area, the method of processing is determined based on the width of the detected thin line. For example, when the width of the thin line is smaller than a predetermined value, the area of such thin line may be outputted as a plain image instead of a pattern image so that it may easily be seen or recognized. The contour of a color area may be made conspicuous by combining a plain image and a pattern image.Type: GrantFiled: February 28, 1992Date of Patent: January 16, 1996Assignee: Canon Kabushiki KaishaInventors: Masafumi Kamei, Yoshiyuki Suzuki, Shizuo Hasegawa, Hiroyuki Ichikawa, Yoshihiro Funamizu, Akio Itoh, Yoshinori Abe
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Patent number: 5475475Abstract: An image forming apparatus for forming a plurality of images at different positions on a single recording sheet is disclosed.Type: GrantFiled: February 19, 1992Date of Patent: December 12, 1995Assignee: Canon Kabushiki KaishaInventors: Hideto Kohtani, Masanori Sakai, Masao Watanabe, Hiroaki Takeda, Satoru Kutsuwada, Masafumi Kamei
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Patent number: 5257074Abstract: An image forming apparatus having an input section for inputting handwritten characters and a character recognition device for recognizing the character types in the handwritten characters inputted from the input section. Character pattern data is generated representing the character types recognized by the character recognizing device. A scanning device scans an original document image and forms an image produced by combining character pattern data generated by the generating device with the scanned image of the original document.Type: GrantFiled: April 9, 1992Date of Patent: October 26, 1993Assignee: Canon Kabushiki KaishaInventor: Masafumi Kamei