Patents by Inventor Hideo Owa

Hideo Owa 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: 7401228
    Abstract: A data transmitting method, a data recording apparatus, a data record medium and a data reproducing apparatus are provided to disallow the encryption to be easily decoded and keep the secrecy of key information higher. The data transmitting apparatus includes an error correction coding process block. In the block, an input converting circuit operates to perform a logic operation with respect to the information data from an interface circuit 12 according to the key data. The converted information data is sent to an encoder 15 for generating parity data. This parity data is mixed with information data before conversion in a mixing circuit. The error correction coding block operates to send the resulting data to a modulating circuit 17 for modulating the data. The modulated data is recorded on a disk record medium.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: July 15, 2008
    Assignee: Sony Corporation
    Inventors: Yoichiro Sako, Yoshitomo Osawa, Akira Kurihara, Isao Kawashima, Hideo Owa
  • Patent number: 7398251
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced, the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: July 8, 2008
    Assignee: Sony Corporation
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Patent number: 7380132
    Abstract: An input is ciphered in at least one of a sector forming circuit 13, a scrambling circuit 14, a header appendage circuit 15, an error correction encoding circuit 16, a modulation circuit 17 and a synchronization appendage circuit 18, used for processing input data for forming a recording signal. Not only key for ciphering itself in the circuits but also the information as to which of the circuits has been used for ciphering becomes the key for ciphering. This realizes ciphering difficult to decode by a simplified structure.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: May 27, 2008
    Assignee: Sony Corporation
    Inventors: Yoichiro Sako, Isao Kawashima, Akira Kurihara, Yoshitomo Osawa, Hideo Owa
  • Patent number: 7366700
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced, the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: April 29, 2008
    Assignee: Sony Corporation
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Patent number: 7321878
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced, the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: January 22, 2008
    Assignee: Sony Corporation
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Patent number: 7249101
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced, the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: July 24, 2007
    Assignee: Sony Corporation
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Patent number: 7246096
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced, the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: July 17, 2007
    Assignee: Sony Corporation
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Patent number: 7246095
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced; the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: July 17, 2007
    Assignee: Sony Corporation
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Publication number: 20050209968
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced, the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Application
    Filed: March 24, 2005
    Publication date: September 22, 2005
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Patent number: 6944297
    Abstract: A data reproducing apparatus and method is provided for reproducing data that was ciphered during recording in one or more of sector forming, header appending, error correction coding, modulation, and synchronization appending operations used for processing input data to form a recording signal. Thus, deciphering requires knowledge of both the ciphering key and the aspect(s) of the recording operation in which the ciphering took place. The deciphering may also include a descrambling operation in which an initial value and/or a generating polynomial is varied in accordance with ciphering key information.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: September 13, 2005
    Assignee: Sony Corporation
    Inventors: Yoichiro Sako, Isao Kawashima, Akira Kurihara, Yoshitomo Osawa, Hideo Owa
  • Publication number: 20050192903
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced, the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Application
    Filed: March 24, 2005
    Publication date: September 1, 2005
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Publication number: 20050177258
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced; the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Application
    Filed: March 24, 2005
    Publication date: August 11, 2005
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Publication number: 20050177259
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Application
    Filed: March 24, 2005
    Publication date: August 11, 2005
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Publication number: 20050165702
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced, the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Application
    Filed: March 23, 2005
    Publication date: July 28, 2005
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Publication number: 20050165701
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced; the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Application
    Filed: March 23, 2005
    Publication date: July 28, 2005
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Patent number: 6882987
    Abstract: A data recording apparatus capable of preventing easily copying of information is disclosed with which, even if information is copied, the copied information cannot be reproduced, the data recording apparatus having a terminal to which encoder ID specific for the data recording apparatus is input, a recording unit for recording at least the encoder ID on an optical disk, and an encoding circuit for, in accordance with the encoder ID, encoding data supplied through a terminal and required to be recorded so that encoded data is, together with the encoder ID, recorded on the optical disk.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: April 19, 2005
    Assignee: Sony Corporation
    Inventors: Yoichiro Sako, Akira Kurihara, Yoshitomo Osawa, Isao Kawashima, Hideo Owa
  • Patent number: 6687826
    Abstract: An optical disc (1) has a plurality of sectors each including a header area and a recording area, in which a position where a predetermined amount of data is recorded provides an ID information (medium ID peculiar to the optical disc). The ID information in the optical disc (1) is used by a first encryption circuit (12) to encrypt a disc key to encrypt AV data as a whole, the encrypted disc key is used by a second encryption circuit (13) to encrypt a sector key to encrypt the AV data for each program, and the encrypted sector key is used by a third encryption circuit (14) to encrypt the AV data for each program. The AV data subjected to at least the first to third encryptions is recorded into the recording area of the optical disc (1).
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: February 3, 2004
    Assignee: Sony Corporation
    Inventor: Hideo Owa
  • Patent number: 6564009
    Abstract: An optical disk apparatus for recording and/or reproducing user data onto and/or from an optical disk. The apparatus includes an optical head for irradiating a laser beam having a wavelength of approximately 680 (nm) or less to the optical disk and having a lens with a numerical aperture (NA) of approximately 0.7 or more and a working distance of approximately 560 (&mgr;m) or less. By utilizing such apparatus, a relatively large amount of data may be recorded onto the optical disk.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: May 13, 2003
    Assignee: Sony Corporation
    Inventors: Hideo Owa, Shoei Kobayashi, Susumu Sensyu, Shinji Katsuramoto, Toshio Watanabe, Hidenori Mori, Masanobu Yamamoto, Masaki Saito
  • Publication number: 20030023861
    Abstract: A data transmitting method, a data recording apparatus, a data record medium and a data reproducing apparatus are provided to disallow the encryption to be easily decoded and keep the secrecy of key information higher. The data transmitting apparatus includes an error correction coding process block. In the block, an input converting circuit operates to perform a logic operation with respect to the information data from an interface circuit 12 according to the key data. The converted information data is sent to an encoder 15 for generating parity data. This parity data is mixed with information data before conversion in a mixing circuit. The error correction coding block operates to send the resulting data to a modulating circuit 17 for modulating the data. The modulated data is recorded on a disk record medium.
    Type: Application
    Filed: August 2, 2002
    Publication date: January 30, 2003
    Applicant: SONY CORPORATION
    Inventors: Yoichiro Sako, Yoshitomo Osawa, Akira Kurihara, Isao Kawashima, Hideo Owa
  • Publication number: 20030002866
    Abstract: An optical disk apparatus for recording and/or reproducing user data onto and/or from an optical disk. The apparatus includes an optical head for irradiating a laser beam having a wavelength of approximately 680 (nm) or less to the optical disk and having a lens with a numerical aperture (NA) of approximately 0.7 or more and a working distance of approximately 560 (&mgr;m) or less. By utilizing such apparatus, a relatively large amount of data may be recorded onto the optical disk.
    Type: Application
    Filed: May 13, 1998
    Publication date: January 2, 2003
    Inventors: HIDEO OWA, SHOEI KOBAYASHI, SUSUMU SENSYU, SHINJI KATSURAMOTO, TOSHIO WATANABE, HIDENORI MORI, MASANOBU YAMAMOTO, MASAKI SAITO