Patents by Inventor Keisuke Nakashima

Keisuke Nakashima 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).

  • Publication number: 20020080239
    Abstract: An electronic device capable of displaying and recording an input image includes an image sensor. A position information detector processes the image imaged by the image sensor and calculates movement information of the image sensor itself or movement information of a subject imaged by the image sensor. The electronic device can input hand-written characters and graphics without adding afresh a mouse or a tablet.
    Type: Application
    Filed: March 5, 2001
    Publication date: June 27, 2002
    Inventors: Mitsuji Ikeda, Tatsuki Inuzuka, Soshiro Kuzunuki, Keisuke Nakashima, Kenjiro Fujii
  • Publication number: 20020070942
    Abstract: In a device and system which perform processing (displaying and outputting) of image data, the amount of data transferred between a memory holding the image data and a processor processing the image data is limited, thereby a great amount of data can be processed at high speed.
    Type: Application
    Filed: January 25, 2002
    Publication date: June 13, 2002
    Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
  • Patent number: 6404930
    Abstract: An apparatus is provided for expanding, decompressing and editing signals, and particularly a signal processing equipment for printing or displaying images. The apparatus includes compression device for image data, storing device for storing the compression data, decompression device, and editing device for editing, using only signals for editing, wherein the transfer of the data between the device is executed using the compression data.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: June 11, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuki Inuzuka, Toshiaki Nakamura, Kouzou Nakamura, Keisuke Nakashima
  • Patent number: 6356269
    Abstract: In a device and system which perform processing (displaying and outputting) of image data, the amount of data transferred between a memory holding the image data and a processor processing the image data is limited, thereby a great amount of data can be processed at high speed.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: March 12, 2002
    Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.
    Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
  • Publication number: 20010043747
    Abstract: There is disclosed an apparatus for expanding, decompressing and editing signals, and particularly disclosed is a signal processing equipment for printing or displaying images. The apparatus comprises compression means for image data, storing means for storing the compression data, decompression means, and editing means for editing, using only signals for edition, wherein the transfer of the data between the means is executed by the compression data.
    Type: Application
    Filed: October 7, 1997
    Publication date: November 22, 2001
    Inventors: TATSUKI INUZUKA, TOSHIAKI NAKAMURA, KOUZOU NAKAMURA, KEISUKE NAKASHIMA
  • Patent number: 6288728
    Abstract: A data processor comprising: a bus control circuit adapted to be interfaced with a synchronous DRAM which can be accessed in synchronism with a clock signal; a plurality of data processing modules coupled to said bus control circuit for producing data and addresses for accessing a memory; and a clock driver for feeding intrinsic operation clocks to said data processing modules and for feeding the clock signal for accessing said memory in synchronism with the operations of said data processing modules to be operated by the operation clock signals, to the outside.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: September 11, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Jun Satoh, Kazushige Yamagishi, Keisuke Nakashima, Koyo Katsura, Takashi Miyamoto, Mitsuru Watabe, Kenichiroh Ohmura
  • Patent number: 6249608
    Abstract: An image processing apparatus obtains a sum A of image data values of pixels in a template image, a sum B of squares of image data values of pixels in a template image, a sum C of image data values of pixels in a sub-image to be processed, of a search image, a sum D of squares of image data values of pixels in the sub-image of the template image, further obtains a threshold value F in advance by using the obtained values A, B, C and D, the number P of pixels in the template image, and the preset value E. Moreover, the apparatus obtains a square of each difference between an image data value of each pixel in the sub-image and that of a corresponding pixel in the template image, and performs cumulative addition for each obtained squares. If the result of cumulative addition exceeds the above-mentioned threshold value, the apparatus closes processing evaluation of a similarity between the sub-image and the template image.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: June 19, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuji Ikeda, Syoji Yoshida, Keisuke Nakashima, Koyo Katsura, Shigeru Shibukawa, Haruo Yoda, Takashi Hotta
  • Patent number: 6097404
    Abstract: A data processor comprising: a bus control circuit adapted to be interfaced with a synchronous DRAM which can be accessed in synchronism with a clock signal; a plurality of data processing modules coupled to said bus control circuit for producing data and addresses for accessing a memory; and a clock driver for feeding intrinsic operation clocks to said data processing modules and for feeding the clock signal for accessing said memory in synchronism with the operations of said data processing modules to be operated by the operation clock signals, to the outside.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: August 1, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Jun Satoh, Kazushige Yamagishi, Keisuke Nakashima, Koyo Katsura, Takashi Miyamoto, Mitsuru Watabe, Kenichiroh Ohmura
  • Patent number: 6091863
    Abstract: An image processor which is connected to a system bus that connects a processor for forming graphic command related to image processing to a main memory that holds command and original image data, and draws image on the frame buffer based upon said graphic command from said processor, wherein said graphic processor has a data bus change-over unit which connects said system bus to a first data bus that is connected to a graphic data memory holding said graphic command and said original image data, or connects said first data bus to a frame buffer which holds the data to be displayed. The image processor realizes a high-speed processing at a reduced cost by using a graphic memory bus coupled to a graphic processor.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: July 18, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Keisuke Nakashima, Jun Satoh, Kazushige Yamagishi, Takashi Miyamoto, Kenichiro Omura, Koyo Katsura, Mitsuru Watabe
  • Patent number: 6084599
    Abstract: In a device and system which perform processing (displaying and outputting) of image data, the amount of data transferred between a memory holding the image data and a processor processing the image data is limited, thereby a great amount of data can be processed at high speed.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: July 4, 2000
    Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.
    Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
  • Patent number: 5999197
    Abstract: A data processor comprising: a bus control circuit adapted to be interfaced with a synchronous DRAM which can be accessed in synchronism with a clock signal; a plurality of data processing modules coupled to said bus control circuit for producing data and addresses for accessing a memory; and a clock driver for feeding intrinsic operation clocks to said data processing modules and for feeding the clock signal for accessing said memory in synchronism with the operations of said data processing modules to be operated by the operation clock signals, to the outside.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: December 7, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Jun Satoh, Kazushige Yamagishi, Keisuke Nakashima, Koyo Katsura, Takashi Miyamoto, Mitsuru Watabe, Kenichiroh Ohmura
  • Patent number: 5748202
    Abstract: In a device and system which perform processing, (displaying and outputting) of image data, the amount of data transferred between a memory holding the image data and a processor processing the image data is limited, thereby a great amount of data can be processed at high speed.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: May 5, 1998
    Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.
    Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
  • Patent number: 5713011
    Abstract: A data processor comprising: a bus control circuit adapted to be interfaced with a synchronous DRAM which can be accessed in synchronism with a clock signal; a plurality of data processing modules coupled to said bus control circuit for producing data and addresses for accessing a memory; and a clock driver for feeding intrinsic operation clocks to said data processing modules and for feeding the clock signal for accessing said memory in synchronism with the operations of said data processing modules to be operated by the operation clock signals, to the outside.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: January 27, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Jun Satoh, Kazushige Yamagishi, Keisuke Nakashima, Koyo Katsura, Takashi Miyamoto, Mitsuru Watabe, Kenichiroh Ohmura
  • Patent number: 5649031
    Abstract: An image information processor for producing a high-quality output image by emphasizing the contour portions of a character, a photograph and others and by preventing the generation of a Moire patterns in a dot region, for preventing an increase in the amount of codes, and for making it unnecessary to set desired binarization processing for each original, is provided. The processor includes a unit for scanning the original to convert each pixel data into an electric signal, a unit for controlling the start of image processing, a filter for carrying out enhancement processing among a plurality of pixels arranged in oblique directions after smoothing processing has been carried out among a plurality of contiguous pixels arranged in scanning and traverse directions, and a unit for carrying out at least one of binarization and binarization capable of realizing pseudo tone expression.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: July 15, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Toshiaki Nakamura, Keisuke Nakashima, Kouzou Nakamura, Shinichi Shinoda, Tatsuki Inuzuka
  • Patent number: 5566253
    Abstract: A device for processing values corresponding to measurement of pixels, includes an input inputting a j th primary density information X.sub.j representing density information of the j th pixel of an image, where the j th pixel includes a part which overlaps the previous (j-1)th pixel. A calculator calculates the j th secondary density information .DELTA.X.sub.j which represents the density information of the part of the j th pixel which does not overlap the (j-1)th pixel, on the basis of at least the j th primary density information X.sub.j and of the previously calculated secondary density information. A memory stores at least one of the j th primary density information X.sub.j and the j th secondary density information .DELTA.X.sub.j. The device can be used in a facsimile system and a data processing system.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: October 15, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Keisuke Nakashima, Masaharu Tadauchi, Toshiaki Nakamura, Noboru Suemori
  • Patent number: 5473445
    Abstract: In a high-speed image scanner, a driving method is proposed which needs no timing adjustment between the sensor driving pulse and the motor drive pulse required when the motor shifts from an accelerated state to a constant-speed state. The period of the sensor driving pulse is selected to be equal to or 1/N (N=integer) of that of the motor drive pulse at the time of constant-speed operation, and the phases of the sensor driving pulse and motor drive pulse are controlled independently of each other. Thus, even though the sensor driving pulse and the motor drive pulse are out of good timing, each line of the image can be surely read.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: December 5, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Toru Takei, Kozo Nakamura, Keisuke Nakashima, Kagehiro Yamamoto, Yasuyuki Kozima
  • Patent number: 5177625
    Abstract: An image processing system which can learn user's preference to satisfy him to the full, and also comprises means for inquiring a user about his satisfication degree to enhance it. The image processing system comprises means for learning user's preference such as his manner of setting and pressing a button, a destination, a condition set for copying, and means for changing a control parameter on the basis of the learning result.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: January 5, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Keisuke Nakashima, Tatsuki Inuzuka, Saburo Yasukawa, Yasuyuki Kozima, Yasuro Hori
  • Patent number: 5162838
    Abstract: A facsimile apparatus has a transparent plate on which a document may be located. The document is then scanned by a scanner which includes electronic solid state light generation means e.g. LEDs which illuminate the document, with the light reflected from the document being detected by a detector. An electronic signal corresponding to an image of the document may then be transmitted to a remote location. Alternately, the facsimile apparatus may be used to copy the document. Cut paper sheets are withdrawn from storage and an image printed thereon by a heat transfer system in which a film of ink is selectively heated. Paper on which an image has been printed is then received on the upper surface of the storage. The facsimile apparatus may also have a document transporter for moving a document past the scanner with the scanner fixed.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: November 10, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuki Inuzuka, Keisuke Nakashima, Toru Takei, Yasuyuki Kojima, Kyoichi Nomura, Shinichi Shinoda, Katsubumi Ouchi, Hideki Muroya, Eizou Ebisui, Norikazu Takahashi, Tomoe Sasayama, Hideo Nakazawa, Naoki Kinoshita, Yasunori Iwafuji, Takeshi Kobayashi, Hisashi Matsumoto, Hiroshi Kawamura, Tadashi Tamaoki, Shogo Matsumoto, Kenji Yokoi, Atuhiko Urusihara
  • Patent number: 4926253
    Abstract: A multi-color document reading apparatus used in a facsimile apparatus for reading a document disposed at a predetermined position containing pictures of multiple colors on a line-by-line basis while discriminately identifying the colors includes an image sensor for sensing optical images in a predetermined area including at least one line of the document disposed at the predetermined position, light sources for selectively illuminating at least the predetermined area in one of first and second energized states differing from each other in respect to the spectral characteristics thereof, a switch circuit for selectively energizing the light sources for illuminating the document in one of the first and second states, a distortion correcting circuit including memories for storing first and second shading waveforms derived from data sensed by the image sensor for optical images of a standard sheet of a specific color disposed at the predetermined position and illuminated by the light source in the first and seco
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: May 15, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Keisuke Nakashima, Saburo Yasukawa, Masaharu Tadauchi, Yasuro Hori