Patents by Inventor Kenji Koishi

Kenji Koishi 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: 8472291
    Abstract: Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: June 25, 2013
    Assignee: Panasonic Corporation
    Inventors: Yoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya
  • Patent number: 8068392
    Abstract: A recording method is provided, which comprises the steps of (a) generating a plurality of pulse sequences corresponding to a plurality of linear velocities, (b) while rotating a recording medium with a linear velocity selected from the plurality of linear velocities, forming at least one of a recording mark and a space by irradiating the recording medium with a pulse sequence selected from the plurality of pulse sequences, the pulse corresponding to the linear velocity. The step (a) comprises the steps of (a-1) measuring at least one first recording parameter corresponding to at least one linear velocity selected from the plurality of linear velocities, (a-2) determining a second recording parameter corresponding to the plurality of linear velocities based on the at least one first recording parameter measured, and (a-3) generating the plurality of pulse sequences corresponding to the plurality of linear velocities based on the second recording parameter measured.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: November 29, 2011
    Assignee: Panasonic Corporation
    Inventor: Kenji Koishi
  • Publication number: 20110286315
    Abstract: Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.
    Type: Application
    Filed: July 29, 2011
    Publication date: November 24, 2011
    Applicant: Panasonic Corporation
    Inventors: Yoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya
  • Patent number: 8023380
    Abstract: The optical data recording method comprising the steps of: modulating data to be recorded, to generate a plurality of recording modulation codes; and emitting a pulse-like light beam to an optical disc, so that a plurality of recording marks and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the optical disc. In the optical data recording method, at least two of the plurality of recording marks comprises: a first pulse which is disposed at a front and forms a leading edge of the recording mark, a last pulse which is disposed at a backend and forms a trailing edge of the recording mark, and a multi-pulse train which is disposed between the first pulse and the last pulse and forms a center of the recording mark. The multi-pulse train has a pulse period longer than T which represents a reference period of the recording modulation code.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: September 20, 2011
    Assignee: Panasonic Corporation
    Inventors: Mamoru Shoji, Kenji Koishi, Atsushi Nakamura, Takashi Ishida, Shuichi Tasaka
  • Patent number: 8014236
    Abstract: Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: September 6, 2011
    Assignee: Panasonic Corporation
    Inventors: Yoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya
  • Patent number: 7944786
    Abstract: A method of determining a recording power used to record information to an optical disc, includes carrying out test recording which records predetermined data to a predetermined area of the optical disc to determine the recording power, and recording predetermined data with a power equal to or more than the determined recording power to an area adjacent to the predetermined area.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: May 17, 2011
    Assignee: Panasonic Corporation
    Inventors: Mamoru Shoji, Shuichi Tasaka, Eiichi Igami, Kenji Koishi
  • Patent number: 7827111
    Abstract: The operating and other procedures of a disk or recording medium application system of the type for which a network is used are simplified. Disks or recording media have auxiliary data recording areas, where different IDs for individual disk, and/or cipher keys and/or decoding keys for ciphers are recorded in advance in a factory. By using the IDs to release the soft ciphers, and using the cipher keys when sending the ciphers, and using the decoding keys when receiving the ciphers, user authorization procedures are simplified.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: November 2, 2010
    Assignee: Panasonic Corporation
    Inventors: Mitsuaki Oshima, Yoshiho Gotoh, Shinichi Tanaka, Kenji Koishi, Mitsurou Moriya, Yoshinari Takemura
  • Publication number: 20100172227
    Abstract: A method of determining a recording power used to record information to an optical disc, includes carrying out test recording which records predetermined data to a predetermined area of the optical disc to determine the recording power, and recording predetermined data with a power equal to or more than the determined recording power to an area adjacent to the predetermined area.
    Type: Application
    Filed: March 19, 2010
    Publication date: July 8, 2010
    Inventors: Mamoru SHOJI, Shuichi Tasaka, Eiichi Igami, Kenji Koishi
  • Patent number: 7710842
    Abstract: A method of determining a recording power used to record information to an optical disc, includes carrying out test recording which records predetermined data to a predetermined area of the optical disc to determine the recording power, and recording predetermined data with a power equal to or more than the determined recording power to an area adjacent to the predetermined area.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: May 4, 2010
    Assignee: Panasonic Corporation
    Inventors: Mamoru Shoji, Shuichi Tasaka, Eiichi Igami, Kenji Koishi
  • Publication number: 20090168619
    Abstract: Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.
    Type: Application
    Filed: March 4, 2009
    Publication date: July 2, 2009
    Applicant: Panasonic Corporation
    Inventors: YOSHIHO GOTOH, Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya
  • Publication number: 20090097374
    Abstract: The optical data recording method comprising the steps of: modulating data to be recorded, to generate a plurality of recording modulation codes; and emitting a pulse-like light beam to an optical disc, so that a plurality of recording marks and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the optical disc. In the optical data recording method, at least two of the plurality of recording marks comprises: a first pulse which is disposed at a front and forms a leading edge of the recording mark, a last pulse which is disposed at a backend and forms a trailing edge of the recording mark, and a multi-pulse train which is disposed between the first pulse and the last pulse and forms a center of the recording mark. The multi-pulse train has a pulse period longer than T which represents a reference period of the recording modulation code.
    Type: Application
    Filed: December 19, 2008
    Publication date: April 16, 2009
    Applicant: PANASONIC CORPORATION
    Inventors: Mamoru Shoji, Kenji Koishi, Atsushi Nakamura, Takashi Ishida, Shuichi Tasaka
  • Patent number: 7520001
    Abstract: Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: April 14, 2009
    Assignee: Panasonic Corporation
    Inventors: Yoshiho Gotoh, Mitsuaki Oshima, Shinichi Tanaka, Kenji Koishi, Mitsuro Moriya
  • Patent number: 7492689
    Abstract: A method is provided for producing a data storage medium by recording disc information on the data storage medium.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: February 17, 2009
    Assignee: Panasonic Corporation
    Inventors: Mamoru Shoji, Kenji Koishi, Atsushi Nakamura, Takashi Ishida, Shuichi Tasaka
  • Patent number: 7489612
    Abstract: A data storage medium is provided on which data is to be recorded by modulating the data to generate a plurality of recording modulation codes and irradiating a pulse-like light beam to the data storage medium, so that a plurality of recording marks and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the data storage medium. The data storage medium comprises a disc information area that includes a region on which at least one of an irradiation information of the light beam to form the recording marks and a constitution information of the recording mark is to be recorded. At least two of the plurality of recording marks are formed by the light beam emitted according to a recording pulse train.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: February 10, 2009
    Assignee: Panasonic Corporation
    Inventors: Mamoru Shoji, Kenji Koishi, Atsushi Nakamura, Takashi Ishida, Shuichi Tasaka
  • Patent number: 7489614
    Abstract: A method is provided for producing a data storage medium by recording disc information on the data storage medium.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: February 10, 2009
    Assignee: Panasonic Corporation
    Inventors: Mamoru Shoji, Kenji Koishi, Atsushi Nakamura, Takashi Ishida, Shuichi Tasaka
  • Patent number: 7489613
    Abstract: A data storage medium is provided on which data is to be recorded by modulating the data to generate a plurality of recording modulation codes and irradiating a pulse-like light beam to the data storage medium, so that a plurality of recording marks and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the data storage medium. At least two of the plurality of recording marks are formed by the light beam emitted according to a recording pulse train. The recording pulse train comprising a first pulse which is disposed at a front and forms a leading edge of the recording mark, a last pulse which is disposed at a backend and forms a trailing edge of the recording mark, and a multi-pulse train which is disposed between the first pulse and the last pulse and forms a center of the recording mark. The multi-pulse train has a pulse period longer than T which represents a reference period of the recording modulation code.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: February 10, 2009
    Assignee: Panasonic Corporation
    Inventors: Mamoru Shoji, Kenji Koishi, Atsushi Nakamura, Takashi Ishida, Shuichi Tasaka
  • Patent number: 7486605
    Abstract: The optical data recording method comprising the steps of: modulating data to be recorded, to generate a plurality of recording modulation codes; and emitting a pulse-like light beam to an optical disc, so that a plurality of recording marks and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the optical disc. In the optical data recording method, at least two of the plurality of recording marks comprises: a first pulse which is disposed at a front and forms a leading edge of the recording mark, a last pulse which is disposed at a backend and forms a trailing edge of the recording mark, and a multi-pulse train which is disposed between the first pulse and the last pulse and forms a center of the recording mark. The multi-pulse train has a pulse period longer than T which represents a reference period of the recording modulation code.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: February 3, 2009
    Assignee: Panasonic Corporation
    Inventors: Mamoru Shoji, Kenji Koishi, Atsushi Nakamura, Takashi Ishida, Shuichi Tasaka
  • Publication number: 20090028018
    Abstract: A method of determining a recording power used to record information to an optical disc, includes carrying out test recording which records predetermined data to a predetermined area of the optical disc to determine the recording power, and recording predetermined data with a power equal to or more than the determined recording power to an area adjacent to the predetermined area.
    Type: Application
    Filed: January 25, 2008
    Publication date: January 29, 2009
    Inventors: Mamoru Shoji, Shuichi Tasaka, Eiichi Igami, Kenji Koishi
  • Publication number: 20080253252
    Abstract: A data storage medium is provided on which data is to be recorded by modulating the data to generate a plurality of recording modulation codes and irradiating a pulse-like light beam to the data storage medium, so that a plurality of recording marks and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the data storage medium. The data storage medium comprises a disc information area that includes a region on which at least one of an irradiation information of the light beam to form the recording marks and a constitution information of the recording mark is to be recorded. At least two of the plurality of recording marks are formed by the light beam emitted according to a recording pulse train.
    Type: Application
    Filed: August 21, 2007
    Publication date: October 16, 2008
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Mamoru SHOJI, Kenji KOISHI, Atsushi NAKAMURA, Takashi ISHIDA, Shuichi TASAKA
  • Patent number: 7417931
    Abstract: An information recording method is provided, which comprises the steps of (a) determining a power level of a pulse sequence, (b) generating the pulse sequence based on the power level determined, and (c) irradiating an information recording medium with light corresponding to the pulse sequence generated to record information represented by at least either a recording mark or a space onto the information recording medium. The pulse sequence comprises a multi-pulse chain for forming the recording mark. The multi-pulse chain comprises a plurality of pulses having a peak power level. In the step (a), a bottom power level is determined between the peak power level and an erase power level which is lower than the peak power level while keeping an interpulse spacing constant.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: August 26, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kenji Koishi