Patents by Inventor Yoshizumi Inazawa
Yoshizumi Inazawa 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).
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Patent number: 8427910Abstract: Audio-centered information is stored on a unitary medium by using a Table-of-Contents (TOC) mechanism that specifies an actual configuration of various audio items on the medium. In particular, each one of a set of one or more Track Areas gets at least two mutually logically conforming Sub-TOCs assigned. This allows to retrieve any constituent Sub-TOC part from at least any correct copy of the Sub-TOCs. Furthermore, one or more Master-TOCs are provided for specifically pointing to each of the Sub-TOCs.Type: GrantFiled: February 9, 2007Date of Patent: April 23, 2013Assignees: U.S. Philips Corporation, Sony CorporationInventors: Johannes M. M. Verbakel, Johannes Jan Mons, Muneyasu Maeda, Yoshizumi Inazawa, Tadao Suzuki
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Patent number: 7263051Abstract: Audio-centered information is stored on a unitary medium by using a Table-of-Contents (TOC) mechanism that specifies an actual configuration of various audio items on the medium. In particular, each one of a set of one or more Track Areas gets at least two mutually logically conforming Sub-TOCs assigned. This allows to retrieve any constituent Sub-TOC part from at least any correct copy of the Sub-TOCs. Furthermore, one or more Master-TOCs are provided for specifically pointing to each of the Sub-TOCs.Type: GrantFiled: January 25, 2002Date of Patent: August 28, 2007Assignee: Koninklijke Philips Electronics N.V.Inventors: Johannes M. M. Verbakel, Johannes J. Mons, Muneyasu Maeda, Yoshizumi Inazawa, Tadao Suzuki
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Publication number: 20070127321Abstract: Audio-centered information is stored on a unitary medium by using a Table-of-Contents (TOC) mechanism that specifies an actual configuration of various audio items on the medium. In particular, each one of a set of one or more Track Areas gets at least two mutually logically conforming Sub-TOCs assigned. This allows to retrieve any constituent Sub-TOC part from at least any correct copy of the Sub-TOCs. Furthermore, one or more Master-TOCs are provided for specifically pointing to each of the Sub-TOCs.Type: ApplicationFiled: February 9, 2007Publication date: June 7, 2007Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Johannes Verbakel, Johannes Mons, Muneyasu Maeda, Yoshizumi Inazawa, Tadao Suzuki
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Patent number: 6587948Abstract: A recording method and a recording apparatus whereby digital data is recorded onto a disc as run-length limited code used for modulating marks or spaces on the disc and, at the same time, the recorded digital data is encrypted by using key data which is also recorded onto the same disc by varying the shape of marks or spaces with timing having no effect on the edges of the marks or the spaces. A playback method and a playback apparatus reproduces the digital data and the key data recorded on the disc by the recording method and/or the recording apparatus from the disc with the key data used for decrypting the reproduced digital data.Type: GrantFiled: February 8, 1999Date of Patent: July 1, 2003Assignee: Sony CorporationInventors: Yoshizumi Inazawa, Tadashi Fukami, Keisuke Yamaoka
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Publication number: 20020114252Abstract: Audio-centered information is stored on a unitary medium by using a Table-of-Contents (TOC) mechanism that specifies an actual configuration of various audio items on the medium. In particular, each one of a set of one or more Track Areas gets at least two mutually logically conforming Sub-TOCs assigned. This allows to retrieve any constituent Sub-TOC part from at least any correct copy of the Sub-TOCs. Furthermore, one or more Master-TOCs are provided for specifically pointing to each of the Sub-TOCs.Type: ApplicationFiled: January 25, 2002Publication date: August 22, 2002Applicant: U.S. Philips CorporationInventors: Johannes M.M. Verbakel, Johannes J. Mons, Muneyasu Maeda, Yoshizumi Inazawa, Tadao Suzuki
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Patent number: 6370090Abstract: Audio-centered information is stored on a unitary medium by using a Table-of-Contents (TOC) mechanism that specifies an actual configuration of various audio items on the medium. In particular, each one of a set of one or more Track Areas gets at least two mutually logically conforming Sub-TOCs assigned. This allows to retrieve any constituent Sub-TOC part from at least any correct copy of the Sub-TOCs. Furthermore, one or more Master-TOCs are provided for specifically pointing to each of the Sub-TOCs.Type: GrantFiled: June 8, 1999Date of Patent: April 9, 2002Assignee: U.S. Philips CorporationInventors: Johannes M. M. Verbakel, Johannes J. Mons, Muneyasu Maeda, Yoshizumi Inazawa, Tadao Suzuki
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Patent number: 6157606Abstract: A recording apparatus for modulating a master key used for encrypting main data in a pit-width direction by changing a light amount of a laser beam to then record it on an optical recording medium and records the main data encrypted by using the master key with correcting the main data so as to have a certain pit width and a pit length so that a jitter resulting in intersymbol interference of adjacent pits should be reduced. A reproducing apparatus for reproducing the recorded optical recording medium, and to thereby prevent an optical recording medium from being duplicated by an illegal copy.Type: GrantFiled: March 17, 1998Date of Patent: December 5, 2000Assignee: Sony CorporationInventors: Yoshizumi Inazawa, Tadao Suzuki
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Patent number: 5872755Abstract: A recording method for a disc-shaped recording medium formed by cementing two disc members having a recording layer on one surface, a diameter of approximately 12 cm and a thickness of approximately 0.6 mm, includes the steps of generating a digital audio signal that is generated by performing a .SIGMA..increment.-modulation for converting an analog audio signal with a sampling frequency set to a multiple of the standard compact disc sampling frequency fs=44.1 kHz, and recording the generated digital audio signal to the disc-shaped recording medium.Type: GrantFiled: July 23, 1997Date of Patent: February 16, 1999Assignee: Sony CorporationInventors: Yoshizumi Inazawa, Tadao Suzuki
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Patent number: 5712838Abstract: A recording method for a disc-shaped recording medium formed by cementing two disc members having a recording layer on one surface, a diameter of approximately 12 cm and a thickness of approximately 0.6 mm, includes the steps of generating a digital audio signal that is generated by performing the standard compact disc sampling; .SIGMA..DELTA.-modulation for converting an analog audio signal with a sampling frequency set to a multiple of a frequency fs=44.1 kHz, and recording the generated digital audio signal to the disc-shaped recording medium.Type: GrantFiled: November 18, 1996Date of Patent: January 27, 1998Assignee: Sony CorporationInventors: Yoshizumi Inazawa, Tadao Suzuki
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Patent number: 5379152Abstract: A data recorder includes a recording unit for recording data having a predetermined data format and a frame address in a recording medium in units of frames each consisting of predetermined amount of data, and for forming a plurality of Partitions each consisting of a plurality of data areas in which different types of data are recorded during recording. The data recorder performs initialization of a length of at least one of the Partitions.Type: GrantFiled: September 15, 1993Date of Patent: January 3, 1995Assignees: Sony Corporation, Hewlett-Packard LimitedInventors: Kentaro Odaka, Shinya Ozaki, Yoshizumi Inazawa, Masaki Yamada, Peter Bramhall
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Patent number: 5144501Abstract: In this invention, a predetermined amount of data is given as one frame, and data having a predetermined format is recorded for each frame. A first area recording main data and a second area recording sub data are formed in each frame. Plural types of units each consisting of a plurality of frames are set, and a number of first units from a leading end of a recording medium and the numbers of other units from the leading end of the recording medium to a trailing end of the first units are recorded in the second area of a frame constituting the unit including the trailing end, thus facilitating a high-speed search operation.Type: GrantFiled: August 8, 1991Date of Patent: September 1, 1992Assignees: Sony Corporation, Hewlett-Packard LimitedInventors: Yoshizumi Inazawa, Shinya Ozaki, Brian Milthorp, Bruce Thompson
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Patent number: 5134529Abstract: An apparatus and method for recording digital data employing a DAT (digital audio tape recorder) adapted to record the data from a computer or the like in accordance with the DAT format, wherein a unit is formed of predetermined plural frames and a signal indicative of each frame number within a unit and a signal indicative of the last frame of the unit are recorded with each frame, whereby the length of the unit can be arbitrarily changed and accordingly signal processing is facilitated easily.Type: GrantFiled: February 25, 1991Date of Patent: July 28, 1992Assignee: Sony CorporationInventors: Yoshizumi Inazawa, Masaki Yamada, Shiya Ozaki, Tatsuya Iijima, Hiroshi Ishibashi, Kentaro Odaka
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Patent number: 5091805Abstract: An apparatus and method for recording and/or reproducing digital data employing a DAT (digital audio tape recorder) adapted to record and/or reproduce data from a computer or the like in accordance with the DAT format. Main data is recorded in a main area of a track while error detecting data for the main data recorded in the main area of the track is recorded in a sub-area of the track to thereby easily detect an error in the main data.Type: GrantFiled: October 25, 1988Date of Patent: February 25, 1992Assignee: Sony CorporationInventors: Kentaro Odaka, Shinya Ozaki, Yoshizumi Inazawa, Masaki Yamada, Hiroshi Ishibashi, Tatsuya Iijima
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Patent number: 5081548Abstract: Data storage apparatus is known in which data is stored on a tape medium in at least two different longitudinally spaced sections (Partitions I and 0) with data recordal in each section being effected in accordance with a predetermined format. This format will generally be of the type in which tape-usage information is recorded in a system log (82) located upstream of the main data area (37). It is also known to record tape usage information relating to each tape section (Partition 1,0) in the system log (82) of that section. The present apparatus provides not only for the recording of usage information from which section-specific information can be derived, but also for the recording of aggregated tape usage information. This latter information is stored in the system log (82) of the first tape section (Partition 1) so as to be readily accessible upon tape loading.Type: GrantFiled: February 26, 1990Date of Patent: January 14, 1992Assignees: Hewlett-Packard Ltd., Sony CorporationInventors: Yoshizumi Inazawa, Brian A. Milthorp
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Patent number: 5067131Abstract: An apparatus and method for recording and/or reproducing digital data employing a DAT (digitial audio tape recorder) adapted to record and/or reproduce data from a computer or the like in accordance with the DAT format. Main data is recorded in a main area of a track while error detecting data for the main data recorded in the main area of the track is recorded in a sub-area of the track to thereby easily detect an error in the main data.Type: GrantFiled: May 25, 1990Date of Patent: November 19, 1991Assignee: Sony CorporationInventors: Kentaro Odaka, Shinya Ozaki, Yoshizumi Inazawa, Masaki Yamada, Hiroshi Ishibashi, Tatsuya Iijima
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Patent number: 5029022Abstract: A method is disclosed for effecting update-in-place of data that has been recorded on tape in oblique tracks using a helical-scan recording technique. The data to be updated is recorded in a block of M tracks lying between first and second continuum each at least of N tracks where N is the worst-case number of tracks required to achieve head/track alignment. The block of M tracks comprises a first series of at least N tracks, a second series of tracks containing the data, and a third series of at least P tracks. When updating the data, the block is rewritten as a whole in a single continuum with the first track of the block being written within a distance of P tracks from the last track of the first continuum.Type: GrantFiled: January 5, 1989Date of Patent: July 2, 1991Assignees: Hewlett-Packard Limited, Sony CorporationInventors: Kentaro Odaka, Yoshizumi Inazawa, Brian A. Milthorp, Bruce A. Thompson
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Patent number: 5012459Abstract: Digital data is formatted and recorded in track pairs on a tape by the rotary heads of a DAT so as to have a header portion for each track which includes a frame number, error correcting code, ID and so on added to the digital data, the content of each header portion of the tracks for any given frame being equal whereby it is possible to easily detect, upon reproduction, unerased data signals due to head clogging and so on by comparing portions of the two header portions of each frame and error correcting the data from those tracks where it is determined that the compared header portions contain different data.Type: GrantFiled: June 11, 1990Date of Patent: April 30, 1991Assignee: Sony CorporationInventors: Kentaro Odaka, Shinya Ozaki, Masaki Yamada, Yoshizumi Inazawa, Hiroshi Ishibashi
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Patent number: 4958244Abstract: A method of position detection on a recording medium is performed by moving the recording medium alternately in normal and reverse directions, while searching for a target position, and decreasing the travel speed of the recording medium with each change in direction. Immediately after a target position has been finally passed, a report signal of the search completion is generated, thereby shortening the search time.Type: GrantFiled: January 5, 1989Date of Patent: September 18, 1990Assignee: Sony CorporationInventors: Yoshizumi Inazawa, Brian Milthorp, Bruce Thompson
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Patent number: 4899232Abstract: An apparatus for recording and/or reproducing digital data information on a recording medium which has a recorder similar to a digital audio recorder (DAT) which records digital signals in a frame made up of two oblique tracks formed by rotary heads and a controller for dividing the digital data information at a predetermined frame portion and supplying the divided information to the recorder as a digital signal, wherein since the digital data information are divided at the predetermined frame portion, they are easily re-recorded.Type: GrantFiled: April 5, 1988Date of Patent: February 6, 1990Assignee: Sony CorporationInventors: Kentaro Odaka, Shinya Ozaki, Masaki Yamada, Hiroshi Ishibashi, Yoshizumi Inazawa
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Patent number: 4873589Abstract: A data streamer using a digital audio tape recorder (DAT) arranged such that even when the supply of incoming data to be recorded is interrupted, the data recorder is operated continuously and a data invalid signal is recorded on the tape in an area other than the data recording area, whereby the data recorder can record data at a high recording rate and in short time.Type: GrantFiled: December 15, 1987Date of Patent: October 10, 1989Assignee: Sony CorporationInventors: Yoshizumi Inazawa, Masaki Yamada, Hiroshi Ishibashi, Shinya Ozaki