Patents by Inventor Takayuki Tsutsumi

Takayuki Tsutsumi 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).

  • Patent number: 10672107
    Abstract: In order to suitably perform image processing on each partial area of an input image, an image processing apparatus divides an input image into a plurality of rectangular images, and performs image processing for each rectangular image. The apparatus stores intermediate information corresponding to each pixel in a rectangular image; performs image processing on pixel data of a rectangular image of interest based on the intermediate information, and generates intermediate information to be used in image processing on pixel data subsequent to the rectangular image of interest; and updates the intermediate information with the generated intermediate information. The apparatus updates the intermediate information based on given update period information that indicates an intermediate information update period.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: June 2, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Takayuki Tsutsumi
  • Publication number: 20180268524
    Abstract: In order to suitably perform image processing on each partial area of an input image, an image processing apparatus divides an input image into a plurality of rectangular images, and performs image processing for each rectangular image. The apparatus stores intermediate information corresponding to each pixel in a rectangular image; performs image processing on pixel data of a rectangular image of interest based on the intermediate information, and generates intermediate information to be used in image processing on pixel data subsequent to the rectangular image of interest; and updates the intermediate information with the generated intermediate information. The apparatus updates the intermediate information based on given update period information that indicates an intermediate information update period.
    Type: Application
    Filed: March 13, 2018
    Publication date: September 20, 2018
    Inventor: Takayuki Tsutsumi
  • Patent number: 9614996
    Abstract: Based on attachment position information of each of a plurality of sensor units, which reads an image in each area obtained by dividing the area of an original in a sub-scanning direction, image data output from the sensor unit undergoes attachment error correction of correcting the attachment error of the sensor unit. Image data output from the plurality of sensor units then undergo joint processing. Based on the placement information of the original, tilt correction of correcting the tilt of the original is performed for the image data having undergone the joint processing.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: April 4, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuyuki Hagiwara, Takayuki Tsutsumi
  • Publication number: 20160352965
    Abstract: Based on attachment position information of each of a plurality of sensor units, which reads an image in each area obtained by dividing the area of an original in a sub-scanning direction, image data output from the sensor unit undergoes attachment error correction of correcting the attachment error of the sensor unit. Image data output from the plurality of sensor units then undergo joint processing. Based on the placement information of the original, tilt correction of correcting the tilt of the original is performed for the image data having undergone the joint processing.
    Type: Application
    Filed: August 15, 2016
    Publication date: December 1, 2016
    Inventors: Katsuyuki Hagiwara, Takayuki Tsutsumi
  • Patent number: 9451125
    Abstract: Based on attachment position information of each of a plurality of sensor units, which reads an image in each area obtained by dividing the area of an original in a sub-scanning direction, image data output from the sensor unit undergoes attachment error correction of correcting the attachment error of the sensor unit. Image data output from the plurality of sensor units then undergo joint processing. Based on the placement information of the original, tilt correction of correcting the tilt of the original is performed for the image data having undergone the joint processing.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: September 20, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuyuki Hagiwara, Takayuki Tsutsumi
  • Publication number: 20150070734
    Abstract: Based on attachment position information of each of a plurality of sensor units, which reads an image in each area obtained by dividing the area of an original in a sub-scanning direction, image data output from the sensor unit undergoes attachment error correction of correcting the attachment error of the sensor unit. Image data output from the plurality of sensor units then undergo joint processing. Based on the placement information of the original, tilt correction of correcting the tilt of the original is performed for the image data having undergone the joint processing.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 12, 2015
    Inventors: Katsuyuki Hagiwara, Takayuki Tsutsumi
  • Patent number: 8630282
    Abstract: Voice data from speech start till mute are transmitted as a section voice file to the opposite side voice data transmitting and receiving system, thus permitting voice data transmission free from voice interruption. By transmitting voice data from the speech start till the mute it is possible to eliminate packet losses in the data transmission channel and perform voice communication in the same voice quality as in the transmitting side. Besides, because of the use of HTTP communication port it is possible to obtain voice communication exceeding the rooter without any special setting.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: January 14, 2014
    Assignee: NEC Infrontia Corporation
    Inventors: Takayuki Tsutsumi, Yoshikazu Kobayashi
  • Patent number: 8619330
    Abstract: An apparatus includes a processing unit configured to perform halftone processing for input image data and output halftone image data, a determination unit configured to determine a mixing ratio based on a difference value between a low frequency component of the halftone image data and a low frequency component of the input image data, and a mixing unit configured to mix the input image data and the halftone image data based on the mixing ratio.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: December 31, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Tsutsumi, Hisashi Ishikawa
  • Patent number: 8619336
    Abstract: Directional data is generated representing a pattern that indicates a growing direction of a dot on a scanning line. Coefficients used to distribute the image data of a pixel of interest are set. An edge of an input image is detected. The image data of the pixel of interest of the input image is distributed to the interest pixel and a pixel adjacent to the interest pixel based on the coefficients. Image data distributed from the adjacent pixel is added to image data of the interest pixel on which the distribution is performed, and the sum of the image data is as corrected image data of the interest pixel. The corrected image data and the generated directional data are selected for an edge, and the image data of the interest pixel and input directional data are selected for a non-edge to generate an image signal pulse-width modulated.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: December 31, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Tsutsumi, Hisashi Ishikawa
  • Patent number: 8184568
    Abstract: Each of a plurality of wireless terminals connected to a wireless LAN base station notifies the base station of an address for receiving data by one-to-many communication from the base station when said wireless terminal executes a program using the one-to-many communication in the wireless LAN. The base station records by relating the address notified from the wireless terminal with an address of the wireless terminal for one-to-one communication. When the base station receives one-to-many communication data to be sent out the wireless LAN, the base station converts an address of destination of the one-to-many communication data into the one-to-one communication address corresponding to said destination and transmits the data whose destination address has been converted into the one-to-one communication address.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: May 22, 2012
    Assignee: NEC Infrontia Corporation
    Inventor: Takayuki Tsutsumi
  • Patent number: 8156408
    Abstract: A decoding apparatus acquires, from encoded data, a piece of additional bits that have been partly cut off, acquires, from the piece of the additional bits, the number of bits that are missing due to the cutting off as the number of missing bits, and restores the additional bits by reproducing the missing bits.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: April 10, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Tsutsumi, Hisashi Ishikawa
  • Patent number: 8023756
    Abstract: This invention encodes an image mixed of a character or line-drawing image and a natural image. An extraction unit extracts the color of a pixel, which constitutes a high-frequency component, from the input image data as an extracted color and generates identification information indicating whether each pixel in the image data is a pixel of an extracted color or non-extracted color. A replacement unit replaces a pixel value of an extracted color with an average value of non-extracted colors. Using a window having a size of 2×2 pixels, a reducing unit generates one pixel from the window after replacement. If even one non-extracted-color pixel exists in the window, the average value of non-extracted colors within the window is determined to be a pixel value of the reduced image. A packing unit concatenates the extracted color, the result of lossless-encoded identification information and lossy-encoded data of the reduced image.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: September 20, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Tsutsumi, Hisashi Ishikawa
  • Patent number: 8000298
    Abstract: A fast roaming system for changing, in a short period of time, the connection to a roaming destination AP (access point) providing a better communication environment, and for improving a roaming completion rate. In response to a search process performed by a mobile terminal, individual APs transmits AP data required for roaming directly to the mobile terminal. The mobile terminal performs the passive scanning search or the active scanning search for the peripheral APs at short time intervals, and obtains and stores the latest AP data in an AP data table. As a result, only the latest data for the connectable peripheral AP can be stored as a roaming destination in the AP data table. Furthermore, since the order condition is set by the mobile terminal to select the roaming destination AP, there is a high probability that the roaming is completed when the peripheral AP is first selected. Therefore, only a short period of time is required until the roaming is completed.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: August 16, 2011
    Assignee: NEC Infrontia Corporation
    Inventors: Takayuki Tsutsumi, Yoshikazu Kobayashi
  • Patent number: 7952589
    Abstract: A data processing apparatus generates a memory address corresponding to a first memory, and interpolates data read out from the first memory. The data processing apparatus selects a part of the memory address, checks if the first memory stores data corresponding to the selected part of the memory address, and transfers the data, for which it is determined that the first memory does not store the data, and which corresponds to the part of the memory address, from a second memory to the first memory. The data processing apparatus determines to change a part to be selected of the memory address based on the checking result indicating that the first memory does not store the data corresponding to the selected part of the memory address, and changes the part of the memory address corresponding to the characteristics of the memory address.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: May 31, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takayuki Tsutsumi
  • Publication number: 20110122451
    Abstract: An apparatus includes a processing unit configured to perform halftone processing for input image data and output halftone image data, a determination unit configured to determine a mixing ratio based on a difference value between a low frequency component of the halftone image data and a low frequency component of the input image data, and a mixing unit configured to mix the input image data and the halftone image data based on the mixing ratio.
    Type: Application
    Filed: November 18, 2010
    Publication date: May 26, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takayuki Tsutsumi, Hisashi Ishikawa
  • Publication number: 20110116139
    Abstract: Directional data representing a pattern which indicates a growing direction of a dot on a scanning line is generated. Coefficients used to distribute the image data of a pixel of interest are set. An edge of an input image is detected. The image data of the interest pixel of the input image is distributed to the interest pixel and a pixel adjacent to the interest pixel based on the coefficients. Image data distributed from the adjacent pixel is added to image data of the interest pixel on which the distribution is performed, and the sum of the image data is as corrected image data of the interest pixel. The corrected image data and the generated directional data are selected for an edge, and the image data of the interest pixel and input directional data are selected for a non-edge to generate an image signal pulse-width modulated.
    Type: Application
    Filed: November 8, 2010
    Publication date: May 19, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takayuki Tsutsumi, Hisashi Ishikawa
  • Patent number: 7903888
    Abstract: Even an image in which a gradation character/line image having variations in pixel values to a certain degree and a natural image are mixed can be reproduced with sufficient quality in the gradation character/line image and high encoding efficiency, and further, encoded data can be generated with high encoding efficiency. An extraction unit binarizes pixel values in an input block with a predetermined threshold, thereby generates identification information identifying pixels to be substituted and pixels not to be substituted. An average differential value generation unit calculates a differential value between an average value of the pixels to be substituted and an average value of the pixels not to be substituted. A substitute color generation unit subtracts the differential value from the pixels to be substituted. An encoding unit encodes the identification information, the differential value and pixel values of the block after substitution.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: March 8, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Tsutsumi, Hisashi Ishikawa
  • Publication number: 20100107027
    Abstract: A decoding apparatus acquires, from encoded data, a piece of additional bits that have been partly cut off, acquires, from the piece of the additional bits, the number of bits that are missing due to the cutting off as the number of missing bits, and restores the additional bits by reproducing the missing bits.
    Type: Application
    Filed: October 23, 2009
    Publication date: April 29, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takayuki Tsutsumi, Hisashi Ishikawa
  • Publication number: 20090196581
    Abstract: According to one embodiment, a recording/reproduction apparatus comprises a recording module configured to record input video data, an output module configured to output the input video data to a display apparatus, and a screen division module configured to reproduce, from the recording module, recorded video data related to present video data being outputted to the display apparatus, when a screen division instruction is supplied to the display apparatus while the input video data is being output to the display apparatus, and configured to output synthesized-screen data composed of the video data thus reproduced and the input video data.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 6, 2009
    Inventor: Takayuki TSUTSUMI
  • Publication number: 20090080786
    Abstract: This invention encodes an image mixed of a character or line-drawing image and a natural image. An extraction unit extracts the color of a pixel, which constitutes a high-frequency component, from the input image data as an extracted color and generates identification information indicating whether each pixel in the image data is a pixel of an extracted color or non-extracted color. A replacement unit replaces a pixel value of an extracted color with an average value of non-extracted colors. Using a window having a size of 2×2 pixels, a reducing unit generates one pixel from the window after replacement. If even one non-extracted-color pixel exists in the window, the average value of non-extracted colors within the window is determined to be a pixel value of the reduced image. A packing unit concatenates the extracted color, the result of lossless-encoded identification information and lossy-encoded data of the reduced image.
    Type: Application
    Filed: August 22, 2008
    Publication date: March 26, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takayuki Tsutsumi, Hisashi Ishikawa