Patents by Inventor Toshihiro Ishizaka

Toshihiro Ishizaka 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: 20080056074
    Abstract: A recording apparatus, a reproduction apparatus, and a file management method are disclosed wherein the operability in management of a large number of files recorded on a recording medium using an index file can be improved significantly further than ever. An index file is formed from a series of entries of extract information from a large number of files. Information indicative of a relationship between the files is set to the index file. The index file is used to manage a large number of files and so forth recorded on a recording medium.
    Type: Application
    Filed: August 24, 2007
    Publication date: March 6, 2008
    Inventors: Mitsuhiro Hirabayashi, Fumitaka Kawate, Toshihiro Ishizaka
  • Patent number: 7324741
    Abstract: A recording apparatus for recoding digital data to a record medium that is removable and assigned unique medium identification information is disclosed, that comprises a converting means for converting data to be recorded into a file structure that allows a first file format and a second file format to be used, the first file format being handled by computer software and composed of a reference information storing portion and a real data storing portion, the second file format being composed of only a reference information storing portion, and a recording means for recording data having the file structure to the record medium, wherein reference file information and medium identification information of the record medium or information of which the medium identification information has been converted are recorded to at least the reference information storing portion of a file having the second file format.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: January 29, 2008
    Assignee: Sony Corporation
    Inventors: Satoshi Tsujii, Makoto Yamada, Toshihiro Ishizaka
  • Patent number: 7313320
    Abstract: A recording apparatus for recoding digital data to a record medium that is removable and assigned unique medium identification information is disclosed, that comprises a converting means for converting data to be recorded into a file structure that allows a first file format and a second file format to be used, the first file format being handled by computer software and composed of a reference information storing portion and a real data storing portion, the second file format being composed of only a reference information storing portion, and a recording means for recording data having the file structure to the record medium, wherein reference file information and medium identification information of the record medium or information of which the medium identification information has been converted are recorded to at least the reference information storing portion of a file having the second file format.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: December 25, 2007
    Assignee: Sony Corporation
    Inventors: Satoshi Tsujii, Makoto Yamada, Toshihiro Ishizaka
  • Patent number: 7283731
    Abstract: A recording apparatus for recoding digital data to a record medium that is removable and assigned unique medium identification information is disclosed, that comprises a converting means for converting data to be recorded into a file structure that allows a first file format and a second file format to be used, the first file format being handled by computer software and composed of a reference information storing portion and a real data storing portion, the second file format being composed of only a reference information storing portion, and a recording means for recording data having the file structure to the record medium, wherein reference file information and medium identification information of the record medium or information of which the medium identification information has been converted are recorded to at least the reference information storing portion of a file having the second file format.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: October 16, 2007
    Assignee: Sony Corproation
    Inventors: Satoshi Tsujii, Makoto Yamada, Toshihiro Ishizaka
  • Patent number: 7280748
    Abstract: A recording apparatus for recoding digital data to a record medium that is removable and assigned unique medium identification information is disclosed, that comprises a converting means for converting data to be recorded into a file structure that allows a first file format and a second file format to be used, the first file format being handled by computer software and composed of a reference information storing portion and a real data storing portion, the second file format being composed of only a reference information storing portion, and a recording means for recording data having the file structure to the record medium, wherein reference file information and medium identification information of the record medium or information of which the medium identification information has been converted are recorded to at least the reference information storing portion of a file having the second file format.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: October 9, 2007
    Assignee: Sony Corporation
    Inventors: Satoshi Tsujii, Makoto Yamada, Toshihiro Ishizaka
  • Publication number: 20070201832
    Abstract: A recording apparatus which may include a moving-picture recording control device configured to record a moving picture as a moving picture file into a recording medium, a representative image creating device configured to create a representative image creating a predetermined group of frame images forming the moving picture, and a representative-image recording control device configured to record the representative image as a representative image file into the recording medium.
    Type: Application
    Filed: February 8, 2007
    Publication date: August 30, 2007
    Applicant: Sony Corporation
    Inventors: Osamu Date, Toshihiro Ishizaka, Mitsuhiro Hirabayashi, Satoshi Tsujii
  • Publication number: 20070180534
    Abstract: A recording apparatus according to the present invention comprises converting means 15, 18, and 19 and recording means 23, 24, 32, and 33. The converting means 15, 18, and 19 convert the data structure of data into a file structure handled by software. The recording means 23, 24, 32, and 33 record data on a record medium. The file structure has a first data unit as entity data, a second data unit as a set of a plurality of first data units, and a data portion describing management information for managing the relation of the plurality of first data units and attributes of entity data of the first data units. The data portion contains security information for protecting intangible property rights of data.
    Type: Application
    Filed: April 4, 2007
    Publication date: August 2, 2007
    Inventors: Toshihiro Ishizaka, Makoto Yamada, Ryuji Ishiguro
  • Publication number: 20060259781
    Abstract: There are disclosed methods and systems (and related data structures) for processing metadata in files, including media files, so that an alteration or falsification of the metadata can be detected. According to certain embodiments, the metadata includes hash values and digital signatures that were generated by a content server. These hash values and digital signatures can be used by a client device to authenticate the metadata.
    Type: Application
    Filed: April 29, 2005
    Publication date: November 16, 2006
    Inventors: Keiko Saeki, Motomasa Futagami, Toshihiro Ishizaka
  • Patent number: 7076662
    Abstract: MAC values formed with respect to each file belonging to a directory 122A and ICVs (D-ICVc) formed on the basis of the MAC values of all files belonging to the directory 122A are stored into a sequence page 121A. Sequence pages 121A, 121B, . . . formed respectively with respect to all of directories 122A, 122B, . . . on a disk and the ICVs formed on the basis of the D-ICVs stored in all of the sequence pages 121A, 121B, . . . are stored into a sequence block 114. Since the MAC values are closed and managed every directory by the sequence pages 121A, 121B, . . . , a data alteration check can be executed every directory. An alteration check of data recorded on a recording medium can be efficiently performed.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: July 11, 2006
    Assignee: Sony Corporation
    Inventor: Toshihiro Ishizaka
  • Patent number: 7027717
    Abstract: A recording apparatus for recoding digital data to a record medium that is removable and assigned unique medium identification information is disclosed, that comprises a converting means for converting data to be recorded into a file structure that allows a first file format and a second file format to be used, the first file format being handled by computer software and composed of a reference information storing portion and a real data storing portion, the second file format being composed of only a reference information storing portion, and a recording means for recording data having the file structure to the record medium, wherein reference file information and medium identification information of the record medium or information of which the medium identification information has been converted are recorded to at least the reference information storing portion of a file having the second file format.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: April 11, 2006
    Assignee: Sony Corporation
    Inventors: Satoshi Tsujii, Makoto Yamada, Toshihiro Ishizaka
  • Publication number: 20050246392
    Abstract: MAC values formed with respect to each file belonging to a directory 122A and ICVs (D-ICVc) formed on the basis of the MAC values of all files belonging to the directory 122A are stored into a sequence page 121A. Sequence pages 121A, 121B, formed respectively with respect to all of directories 122A, 122B, on a disk and the ICVs formed on the basis of the D-ICVs stored in all of the sequence pages 121A, 121B, . . . are stored into a sequence block 114. Since the MAC values are closed and managed every directory by the sequence pages 121A, 121B, . . . , a data alteration check can be executed every directory. An alteration check of data recorded on a recording medium can be efficiently performed.
    Type: Application
    Filed: June 22, 2005
    Publication date: November 3, 2005
    Inventor: Toshihiro Ishizaka
  • Publication number: 20050226603
    Abstract: A recording apparatus, a recording method, a recording medium, and an electronic camera which create an index file (IF) for holding index information of a file separately as a fixed data length portion and a variable data length portion and record the index file on the recording medium.
    Type: Application
    Filed: July 26, 2002
    Publication date: October 13, 2005
    Inventors: Mitsuhiro Hirabayashi, Kenichiro Aridome, Toshihiro Ishizaka
  • Patent number: 6954830
    Abstract: A system and method for recording and storing data such that in the event of a fault condition, a management file can be regenerated. This is accomplished by writing first management files, for managing time-sequential data, onto a recording medium. A second management file, which indicates recording positions and sizes on the recording medium, is also written onto the recording medium. A third management file, which manages all of the time-sequential data, is also written onto the recording medium. In the event of a fault condition, which may compromise the integrity of the third management file, a duplicate third management file can be generated based on the second management file.
    Type: Grant
    Filed: December 25, 2001
    Date of Patent: October 11, 2005
    Assignee: Sony Corporation
    Inventors: Makoto Yamada, Toshihiro Ishizaka, Mitsuhiro Hirabayashi
  • Patent number: 6934847
    Abstract: MAC values formed with respect to each file belonging to a directory 122A and ICVs (D-ICVc) formed on the basis of the MAC values of all files belonging to the directory 122A are stored into a sequence page 121A. Sequence pages 121A, 121B, . . . formed respectively with respect to all of directories 122A, 122B, . . . on a disk and the ICVs formed on the basis of the D-ICVs stored in all of the sequence pages 121A, 121B, . . . are stored into a sequence block 114. Since the MAC values are closed and managed every directory by the sequence pages 121A, 121B, . . . , a data alteration check can be executed every directory. An alteration check of data recorded on a recording medium can be efficiently performed.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: August 23, 2005
    Assignee: Sony Corporation
    Inventor: Toshihiro Ishizaka
  • Publication number: 20050163487
    Abstract: A recording apparatus for recoding digital data to a record medium that is removable and assigned unique medium identification information is disclosed, that comprises a converting means for converting data to be recorded into a file structure that allows a first file format and a second file format to be used, the first file format being handled by computer software and composed of a reference information storing portion and a real data storing portion, the second file format being composed of only a reference information storing portion, and a recording means for recording data having the file structure to the record medium, wherein reference file information and medium identification information of the record medium or information of which the medium identification information has been converted are recorded to at least the reference information storing portion of a file having the second file format.
    Type: Application
    Filed: March 22, 2005
    Publication date: July 28, 2005
    Inventors: Satoshi Tsujii, Makoto Yamada, Toshihiro Ishizaka
  • Publication number: 20050165845
    Abstract: A recording apparatus for recoding digital data to a record medium that is removable and assigned unique medium identification information is disclosed, that comprises a converting means for converting data to be recorded into a file structure that allows a first file format and a second file format to be used, the first file format being handled by computer software and composed of a reference information storing portion and a real data storing portion, the second file format being composed of only a reference information storing portion, and a recording means for recording data having the file structure to the record medium, wherein reference file information and medium identification information of the record medium or information of which the medium identification information has been converted are recorded to at least the reference information storing portion of a file having the second file format.
    Type: Application
    Filed: March 22, 2005
    Publication date: July 28, 2005
    Inventors: Satoshi Tsujii, Makoto Yamada, Toshihiro Ishizaka
  • Publication number: 20050165846
    Abstract: A recording apparatus for recoding digital data to a record medium that is removable and assigned unique medium identification information is disclosed, that comprises a converting means for converting data to be recorded into a file structure that allows a first file format and a second file format to be used, the first file format being handled by computer software and composed of a reference information storing portion and a real data storing portion, the second file format being composed of only a reference information storing portion, and a recording means for recording data having the file structure to the record medium, wherein reference file information and medium identification information of the record medium or information of which the medium identification information has been converted are recorded to at least the reference information storing portion of a file having the second file format.
    Type: Application
    Filed: March 22, 2005
    Publication date: July 28, 2005
    Inventors: Satoshi Tsujii, Makoto Yamada, Toshihiro Ishizaka
  • Publication number: 20050163488
    Abstract: A recording apparatus for recoding digital data to a record medium that is removable and assigned unique medium identification information is disclosed, that comprises a converting means for converting data to be recorded into a file structure that allows a first file format and a second file format to be used, the first file format being handled by computer software and composed of a reference information storing portion and a real data storing portion, the second file format being composed of only a reference information storing portion, and a recording means for recording data having the file structure to the record medium, wherein reference file information and medium identification information of the record medium or information of which the medium identification information has been converted are recorded to at least the reference information storing portion of a file having the second file format.
    Type: Application
    Filed: March 22, 2005
    Publication date: July 28, 2005
    Inventors: Satoshi Tsujii, Makoto Yamada, Toshihiro Ishizaka
  • Publication number: 20050125381
    Abstract: A digital recording apparatus using a disc shaped record medium is disclosed, that comprises a means for extracting outlined information of each of a plurality of files recorded on the disc shaped record medium, a means for correlating the extracted outlined information and the plurality of files and generating an index file, and a means for recording the index file to a predetermined position of the disc shaped record medium, wherein when a predetermined operation mode is performed, a plurality of types of data of the plurality of files are output in a predetermined format.
    Type: Application
    Filed: January 25, 2005
    Publication date: June 9, 2005
    Inventors: Makoto Yamada, Satoshi Tsujii, Toshihiro Ishizaka
  • Publication number: 20050125380
    Abstract: A digital recording apparatus using a disc shaped record medium is disclosed, that comprises a means for extracting outlined information of each of a plurality of files recorded on the disc shaped record medium, a means for correlating the extracted outlined information and the plurality of files and generating an index file, and a means for recording the index file to a predetermined position of the disc shaped record medium, wherein when a predetermined operation mode is performed, a plurality of types of data of the plurality of files are output in a predetermined format.
    Type: Application
    Filed: January 5, 2005
    Publication date: June 9, 2005
    Inventors: Makoto Yamada, Satoshi Tsujii, Toshihiro Ishizaka