Patents by Inventor Yojiro Tagawa

Yojiro Tagawa 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: 8938150
    Abstract: A recording apparatus has: a stream generating unit for generating a first stream constituted of a first moving image signal at a first frame rate and an input audio signal and a second stream constituted of a second moving image signal at a second frame rate faster than the first frame rate and a predetermined audio signal; a recording unit for recording the first and second streams; and an instructing unit for instructing a change-over of a frame rate, wherein in accordance with an instruction output from the instructing unit during recording the first stream, the stream generating unit outputs the second stream instead of the first stream, and the recording unit records the second stream output in response to the instruction by the instructing unit, instead of the first stream.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: January 20, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yojiro Tagawa
  • Patent number: 8464072
    Abstract: The present invention controls to read encrypted digital data from a detachable storage medium, in which the digital data and a decode key for decoding encryption of the digital data are stored. In reading the digital data, the decode key is read, the decode key is deleted from the storage medium, the encrypted digital data is read, and then encryption of the encrypted digital data is decoded by the read decode key.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: June 11, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyoshi Ooshima, Katsumi Iijima, Yojiro Tagawa
  • Patent number: 8335893
    Abstract: A memory management device which is capable of allocating a memory unit accessible at a higher speed to data which is stored in a storage device having memory units different in access speed, without being limited in an storage area. The storage device comprises a BLC flash memory accessible at a predetermined access speed, an MLC flash memory accessible at a lower access speed than the predetermined access speed, a controller, and a RAM. The controller manages the BLC flash memory and the BLC flash memory in units each formed by a plurality of physical pages, and writes data in the physical pages, and the RAM holds page allocation information in which logical pages designated when writing data and the physical pages are associated with each other.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: December 18, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yojiro Tagawa
  • Publication number: 20110142412
    Abstract: A recording apparatus has: a stream generating unit for generating a first stream constituted of a first moving image signal at a first frame rate and an input audio signal and a second stream constituted of a second moving image signal at a second frame rate faster than the first frame rate and a predetermined audio signal; a recording unit for recording the first and second streams; and an instructing unit for instructing a change-over of a frame rate, wherein in accordance with an instruction output from the instructing unit during recording the first stream, the stream generating unit outputs the second stream instead of the first stream, and the recording unit records the second stream output in response to the instruction by the instructing unit, instead of the first stream.
    Type: Application
    Filed: February 23, 2011
    Publication date: June 16, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yojiro Tagawa
  • Patent number: 7920775
    Abstract: A recording apparatus has: a stream generating unit for generating a first stream constituted of a first moving image signal at a first frame rate and an input audio signal and a second stream constituted of a second moving image signal at a second frame rate faster than the first frame rate and a predetermined audio signal; a recording unit for recording the first and second streams; and an instructing unit for instructing a change-over of a frame rate, wherein in accordance with an instruction output from the instructing unit during recording the first stream, the stream generating unit outputs the second stream instead of the first stream, and the recording unit records the second stream output in response to the instruction by the instructing unit, instead of the first stream.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: April 5, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yojiro Tagawa
  • Patent number: 7865061
    Abstract: A recording apparatus includes a recording unit configured to record moving image data including a plurality of frames on a recording medium. The recording medium includes a plurality of clusters. The apparatus also includes an editing unit of the moving image data, a setting unit configured to optionally set the editing unit, a management information processing unit configured to generate management information including link information indicating a cluster number of the moving image data to be reproduced next with respect to a plurality of clusters having the moving image data recorded thereon, and a control unit configured to control the recording unit to record a front frame of each editing unit in the moving image data on an area beginning with a cluster of the recording medium based on the editing unit set by the setting unit.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: January 4, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akiteru Naka, Yojiro Tagawa, Katsumi Iijima
  • Patent number: 7677688
    Abstract: When printing an image on a printing sheet, it is judged whether or not an RFID tag has been arranged in the printing sheet. When an RFID tag has been arranged, an image indicating the presence of RFID tag is printed, or an RFID tag cutting assistant line or the like for invalidating RFID tag is printed, whereby the user can easily recognize the presence of RFID tag. Also, the user can easily cut out and invalidate the RFID tag. When the user's information has been recorded on the RFID tag, a mark indicating the writing of information into RFID tag is attached to the printing sheet, whereby the user can easily recognize the presence/absence of information recorded on RFID tag. Consequently, there can be provided a method capable of identifying and easily discarding a printing sheet with RFID tag which can leak out the user's secret, privacy information or the like, and a method for easily judging whether or not ID information has already been recorded on a printing sheet with RFID tag.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: March 16, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yojiro Tagawa
  • Patent number: 7620994
    Abstract: A data recording system and method are provided which, when the removal of a recording medium is detected during data writing, the data recording system retains accessed processing not executed in the data writing, and executes the retained access processing when the removed recording medium is inserted again into the data system.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: November 17, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyoshi Ooshima, Katsumi Iijima, Yojiro Tagawa
  • Patent number: 7523280
    Abstract: A storage managing system and method, the system and method including matching a boundary of a cluster, which is a minimum data unit of a data region of a storage medium having a write protect function, with a boundary of at least one or more consecutive blocks each having a predetermined size, and applying write protection to data in units of the block.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: April 21, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyoshi Ooshima, Katsumi Iijima, Yojiro Tagawa
  • Patent number: 7499930
    Abstract: This invention provides a technique that deletes data at high speed, and prevents discontinuous cluster chains from being produced due to data deletion. To accomplish this, when data included in the data file is partially deleted from the head of the data file, the location of header information is moved for respective clusters, and the size of the header information is changed, so as to start head data after data deletion from the location immediately after the moved header information.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: March 3, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akiteru Naka, Yojiro Tagawa, Katsumi Iijima
  • Patent number: 7436440
    Abstract: An image processing apparatus, an image processing method, and a program for implementing the image processing method have a capability of recording/playing back a digital image, and the capability can be extended without a significant increase in load imposed on software. On the basis of camera information and picture-taking information, a XML generator produces a XML file to be written in a maker note area. The XML file is input to a maker note generator to produce maker note data including maker note IFD tags. The maker note is input together with the picture-taking information and the camera information to an Exif IFD generator to produce Exif IFD data. Finally, the Exif IFD data and compressed image data are input to an Exif generator to produce a Exif file. In this manner, the Exif file including the maker note area in which image attribute information is described in the XML language is produced.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: October 14, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yojiro Tagawa
  • Publication number: 20080235467
    Abstract: A memory management device which is capable of allocating a memory unit accessible at a higher speed to data which is stored in a storage device having memory units different in access speed, without being limited in an storage area. The storage device comprises a BLC flash memory accessible at a predetermined access speed, an MLC flash memory accessible at a lower access speed than the predetermined access speed, a controller, and a RAM. The controller manages the BLC flash memory and the BLC flash memory in units each formed by a plurality of physical pages, and writes data in the physical pages, and the RAM holds page allocation information in which logical pages designated when writing data and the physical pages are associated with each other.
    Type: Application
    Filed: March 13, 2008
    Publication date: September 25, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yojiro Tagawa
  • Publication number: 20070013808
    Abstract: A recording apparatus has: a stream generating unit for generating a first stream constituted of a first moving image signal at a first frame rate and an input audio signal and a second stream constituted of a second moving image signal at a second frame rate faster than the first frame rate and a predetermined audio signal; a recording unit for recording the first and second streams; and an instructing unit for instructing a change-over of a frame rate, wherein in accordance with an instruction output from the instructing unit during recording the first stream, the stream generating unit outputs the second stream instead of the first stream, and the recording unit records the second stream output in response to the instruction by the instructing unit, instead of the first stream.
    Type: Application
    Filed: June 9, 2006
    Publication date: January 18, 2007
    Applicant: Canon Kabushiki Kaisha
    Inventor: Yojiro Tagawa
  • Publication number: 20060176511
    Abstract: When printing an image on a printing sheet, it is judged whether or not an RFID tag has been arranged in the printing sheet. When an RFID tag has been arranged, an image indicating the presence of RFID tag is printed, or an RFID tag cutting assistant line or the like for invalidating RFID tag is printed, whereby the user can easily recognize the presence of RFID tag. Also, the user can easily cut out and invalidate the RFID tag. When the user's information has been recorded on the RFID tag, a mark indicating the writing of information into RFID tag is attached to the printing sheet, whereby the user can easily recognize the presence/absence of information recorded on RFID tag. Consequently, there can be provided a method capable of identifying and easily discarding a printing sheet with RFID tag which can leak out the user's secret, privacy information or the like, and a method for easily judging whether or not ID information has already been recorded on a printing sheet with RFID tag.
    Type: Application
    Filed: February 9, 2006
    Publication date: August 10, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: YOJIRO TAGAWA
  • Publication number: 20060107009
    Abstract: A storage managing system and method, the system and method including matching a boundary of a cluster, which is a minimum data unit of a data region of a storage medium having a write protect function, with a boundary of at least one or more consecutive blocks each having a predetermined size, and applying write protection to data in units of the block.
    Type: Application
    Filed: November 10, 2005
    Publication date: May 18, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Hiroyoshi Ooshima, Katsumi Iijima, Yojiro Tagawa
  • Publication number: 20060080562
    Abstract: A data recording system and method are provided which, when the removal of a recording medium is detected during data writing, the data recording system retains accessed processing not executed in the data writing, and executes the retained access processing when the removed recording medium is inserted again into the data system.
    Type: Application
    Filed: September 29, 2005
    Publication date: April 13, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Hiroyoshi Ooshima, Katsumi Iijima, Yojiro Tagawa
  • Publication number: 20060059375
    Abstract: The present invention controls to read encrypted digital data from a detachable storage medium, in which the digital data and a decode key for decoding encryption of the digital data are stored. In reading the digital data, the decode key is read, the decode key is deleted from the storage medium, the encrypted digital data is read, and then encryption of the encrypted digital data is decoded by the read decode key.
    Type: Application
    Filed: September 7, 2005
    Publication date: March 16, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hiroyoshi Ooshima, Katsumi Iijima, Yojiro Tagawa
  • Publication number: 20060039678
    Abstract: A recording apparatus includes a recording unit configured to record moving image data including a plurality of frames on a recording medium. The recording medium includes a plurality of clusters. The apparatus also includes an editing unit of the moving image data, a setting unit configured to optionally set the editing unit, a management information processing unit configured to generate management information including link information indicating a cluster number of the moving image data to be reproduced next with respect to a plurality of clusters having the moving image data recorded thereon, and a control unit configured to control the recording unit to record a front frame of each editing unit in the moving image data on an area beginning with a cluster of the recording medium based on the editing unit set by the setting unit.
    Type: Application
    Filed: August 10, 2005
    Publication date: February 23, 2006
    Applicant: Canon Kabushiki kaisha
    Inventors: Akiteru Naka, Yojiro Tagawa, Katsumi Iijima
  • Patent number: 6943840
    Abstract: This invention has as its object to provide an apparatus which can match the brightness of an image displayed on a viewfinder with a target luminance level in actual exposure. To achieve this object, the apparatus has an image sensing sensor for converting an optical image into an image signal, a viewfinder for displaying the image signal obtained by the image sensing sensor, and a correction device for correcting the brightness of the viewfinder in accordance with the difference between the luminance level of the image signal obtained by the image sensing sensor, and a target luminance level.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: September 13, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yojiro Tagawa
  • Publication number: 20050165857
    Abstract: This invention provides a technique that deletes data at high speed, and prevents discontinuous cluster chains from being produced due to data deletion. To accomplish this, when data included in the data file is partially deleted from the head of the data file, the location of header information is moved for respective clusters, and the size of the header information is changed, so as to start head data after data deletion from the location immediately after the moved header information.
    Type: Application
    Filed: January 21, 2005
    Publication date: July 28, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Akiteru Naka, Yojiro Tagawa, Katsumi Iijima