Patents by Inventor Masayuki Hirabayashi
Masayuki Hirabayashi 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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Publication number: 20140006857Abstract: An optical information recording and reproducing apparatus and an optical information recording and reproducing method which make it possible to conduct alternation processing efficiently even if a buffer capacity is limited, in retry processing at time when a verify error is detected are provided. In an optical information recording and reproducing apparatus for recording data onto optical information recording media and reproducing data from the optical information recording media, verify processing is conducted in a predetermined recording quantity unit. Upon detection of a verify error in recorded data, a host computer is requested to retransfer data which has caused the verify error, and received data is intruded in a next scheduled recording quantity unit and recorded onto the optical information recording media.Type: ApplicationFiled: May 1, 2013Publication date: January 2, 2014Applicant: Hitachi Consumer Electronics Co., Ltd.Inventors: Kenji AKAHOSHI, Masayuki HIRABAYASHI
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Publication number: 20130316644Abstract: There is provided a mobile terminal capable of being protected against unauthorized use by a third party without using a dedicated key device. A plurality of mobile terminals are previously registered mutually. When unlocked among them, one mobile terminal communicates with another mobile terminal in a communication range of short-range wireless communications, unlocks the above another mobile terminal, and when out of the communication range, locks it again.Type: ApplicationFiled: May 1, 2013Publication date: November 28, 2013Applicant: Hitachi Consumer Electronics Co., Ltd.Inventors: Masayuki HIRABAYASHI, Hideo NISHIJIMA
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Publication number: 20130258827Abstract: An optical disk that enables a laser beam to be focused on an object track without making mistakes, an optical disk device, a format processing method, and a recording method. The optical disk shall be configured to has a guiding layer with a physical groove structure containing address information and a single or multiple recording layers with no groove structure, in which the guide areas for recording the address information thereon are formed along a track of the guide layer at fixed intervals in a user data area of each recording layer. An address for the recording layer is generated based on information obtained from the guide layer, and the address for the recording layer is recorded in the guide area.Type: ApplicationFiled: March 4, 2013Publication date: October 3, 2013Applicant: Hitachi Consumer Electronics Co., Ltd.Inventors: Shinsuke IZAWA, Masayuki HIRABAYASHI
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Patent number: 8483025Abstract: A data recording and reproducing apparatus relative to a data library device includes a plurality of setup units for recording and reproducing data in a record and reproduction condition appropriate to a recording medium, and a storage unit for storing identification information and medium information of the recording medium, in this way, a setup processing is performed to reproduce the identification information from the recording medium when loading the recording medium, the medium information corresponding to the identification information is read out from the storage unit to perform the setup processing by a second setup unit when the medium information corresponding to the identification information is present in the storage unit, and the setup processing is performed by a third setup unit to reproduce the medium information from the recording medium and store in the storage unit together with the identification information, shortening a time period of the setup processing.Type: GrantFiled: April 20, 2012Date of Patent: July 9, 2013Assignee: Hitachi Consumer Electroncis Co., Ltd.Inventors: Masayuki Hirabayashi, Osamu Kawamae
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Publication number: 20120275281Abstract: A data recording and reproducing apparatus relative to a data library device includes a plurality of setup units for recording and reproducing data in a record and reproduction condition appropriate to a recording medium, and a storage unit for storing identification information and medium information of the recording medium, in this way, a setup processing is performed to reproduce the identification information from the recording medium when loading the recording medium, the medium information corresponding to the identification information is read out from the storage unit to perform the setup processing by a second setup unit when the medium information corresponding to the identification information is present in the storage unit, and the setup processing is performed by a third setup unit to reproduce the medium information from the recording medium and store in the storage unit together with the identification information, shortening a time period of the setup processing.Type: ApplicationFiled: April 20, 2012Publication date: November 1, 2012Inventors: Masayuki Hirabayashi, Osamu Kawamae
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Patent number: 8185793Abstract: A data reproducing apparatus has a nonvolatile memory in addition to a memory for data processing. When data error is uncorrected, data and error correction codes other than uncorrected data are accumulated in the memory for data processing. Corrected data is coupled and repaired, and the repaired data is stored in the nonvolatile memory. It is possible to reproduce data without retry, even if data error is uncorrected when the data of an optical disc is reproduced at the next time.Type: GrantFiled: March 26, 2008Date of Patent: May 22, 2012Assignees: Hitachi, Ltd., Hitachi-LG Data Storage, Inc.Inventor: Masayuki Hirabayashi
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Publication number: 20080270869Abstract: A data reproducing apparatus has a nonvolatile memory in addition to a memory for data processing. When data error is uncorrected, data and error correction codes other than uncorrected data are accumulated in the memory for data processing. Corrected data is coupled and repaired, and the repaired data is stored in the nonvolatile memory. It is possible to reproduce data without retry, even if data error is uncorrected when the data of an optical disc is reproduced at the next time.Type: ApplicationFiled: March 26, 2008Publication date: October 30, 2008Applicants: Hitachi, Ltd, Hitachi-LG Data Storage, Inc.Inventor: Masayuki Hirabayashi
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Patent number: 7123488Abstract: A DC/DC converter has a transformer having a primary winding, a secondary winding, and an auxiliary winding, a switching transistor connected in series to the primary winding, a control transistor for turning the switching transistor on or off, and a feedback control circuit connected to the control transistor and the auxiliary winding. The feedback control circuit includes a Zener diode having a substantially zero temperature coefficient. The Zener diode has a Zener voltage which lies in a range between 5 volts and 6 volts. In order to cancel a temperature characteristic of the control transistor, the temperature coefficient of the Zener diode is selected.Type: GrantFiled: November 24, 2004Date of Patent: October 17, 2006Assignee: Mitsumi Electric Co., Ltd.Inventors: Masayuki Hirabayashi, Hirotaka Yamamoto, Eiji Yoshida, Toru Yoshino
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Publication number: 20050162872Abstract: A DC/DC converter has a transformer having a primary winding, a secondary winding, and an auxiliary winding, a switching transistor connected in series to the primary winding, a control transistor for turning the switching transistor on or off, and a feedback control circuit connected to the control transistor and the auxiliary winding. The feedback control circuit includes a Zener diode having a substantially zero temperature coefficient. The Zener diode has a Zener voltage which lies in a range between 5 volts and 6 volts. In order to cancel a temperature characteristic of the control transistor, the temperature coefficient of the Zener diode is selected.Type: ApplicationFiled: November 24, 2004Publication date: July 28, 2005Applicant: Mitsumi Electric Co. Ltd.Inventors: Masayuki Hirabayashi, Hirotaka Yamamoto, Eiji Yoshida, Toru Yoshino
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Patent number: 6404979Abstract: An optical disk recording thereon compressed moving picture data and an optical disk reproduction apparatus each capable of easily effecting trick play such as high speed reproduction and a retrieval operation at a high speed. Additional information necessary for trick play is recorded in an arbitrary area of an optical disk such as a TOC (Table of Contents) or a leading sector (sector 0) of the disk, and a sector address is added to each sector. To conduct trick play, an I picture, a P picture and a B picture contained in a GOP layer inside a bit stream of compressed image data are extracted and reproduced in accordance with a reproduction speed by looking up a trick play table.Type: GrantFiled: May 29, 2001Date of Patent: June 11, 2002Assignee: Hitachi, Ltd.Inventors: Masayuki Hirabayashi, Hideaki Suzuki, Masafumi Nakamura, Yutaka Nagai, Toshifumi Takeuchi
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Patent number: 6347353Abstract: An information medium having digital signals recorded therein includes a disk having first and second recording surfaces. The digital signals are in the form of a data frame including a lead-in block and n data blocks. The lead-in block has a same format as the n data blocks. n block addresses are assigned to the n data blocks. Information identifying an area on the disk in which the n data blocks is recorded is assigned to the n data blocks. m data blocks (0<m<n) are recorded on the first recording surface, and remaining (n−m) data blocks are recorded on the second recording surface. The lead-in block is recorded at the head of the data frame, and includes information identifying an area on the disk in which the lead-in block is recorded, a number of recording surfaces, the block address of one of the m data blocks recorded last on the first recording surface, and the block address of a last one of the n data blocks in the data frame.Type: GrantFiled: June 30, 1999Date of Patent: February 12, 2002Assignee: Hitachi, Ltd.Inventors: Hiroshi Hirayama, Osamu Kawamae, Masayuki Hirabayashi, Yutaka Nagai, Toshifumi Takeuchi
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Patent number: 6332174Abstract: An apparatus for reproducing digital signals recorded on a disk having first and second recording surfaces. The digital signals are in the form of a data frame including a lead-in block and n data blocks. The lead-in block has a same format as the n data blocks. n block addresses are assigned to the n data blocks. Information identifying an area on the disk in which the n data blocks is recorded is assigned to the n data blocks. m data blocks (0<m<n) are recorded on the first recording surface, and remaining (n−m) data blocks are recorded on the second recording surface. The lead-in block is recorded at the head of the data frame, and includes information identifying an area on the disk in which the lead-in block is recorded, a number of recording surfaces, the block address of one of the m data blocks recorded last on the first recording surface, and the block address of a last one of the n data blocks in the data frame.Type: GrantFiled: June 29, 1999Date of Patent: December 18, 2001Assignee: Hitachi, Ltd.Inventors: Hiroshi Hirayama, Osamu Kawamae, Masayuki Hirabayashi, Yutaka Nagai, Toshifumi Takeuchi
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Patent number: 6324618Abstract: An optical disk reproducing apparatus for reproducing digital signals in the form of a data frame including a lead-in block and data blocks from an optical disk including at least first and second recording surfaces each being readable from a same side of the optical disk. The data blocks include block addresses and data, and are recorded on the first and second recording surfaces. The lead-in block is recorded at a head of the data frame and includes disk information relating to a number of data blocks recorded on the first and second recording surfaces.Type: GrantFiled: May 3, 2000Date of Patent: November 27, 2001Assignee: Hitachi, Ltd.Inventors: Hiroshi Hirayama, Osamu Kawamae, Masayuki Hirabayashi, Yutaka Nagai, Toshifumi Takeuchi
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Patent number: 6314542Abstract: In a system recording compressed video and audio signals or computer user data on a disk in the sector unit, to reproduce the data in a simple fashion at a high speed, data to be recorded on the disk is divided into data in a predetermined unit so as to add a first error correction (C1) code to each of the resultant data, which form (C1) correction blocks. Sectors are produced each including a plurality of (C1) correction blocks. Added to each (C1) correction block is a code enabling identification of a sector. To all data in the plural (C1) correction blocks, a second error correction (C2) code is added to record the resultant data on the disk to allow interleaving or deinterleaving completing in a block. The capacity of each sector is set to be substantially equal to that of a plurality of transport packets.Type: GrantFiled: February 28, 2000Date of Patent: November 6, 2001Assignee: Hitachi, Ltd.Inventors: Yutaka Nagai, Masafumi Nakamura, Toshifumi Takeuchi, Masayuki Hirabayashi
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Publication number: 20010036139Abstract: An optical disk recording thereon compressed moving picture data and an optical disk reproduction apparatus each capable of easily effecting trick play such as high speed reproduction and a retrieval operation at a high speed. Additional information necessary for trick play is recorded in an arbitrary area of an optical disk such as a TOC (Table of Contents) or a leading sector (sector 0) of the disk, and a sector address is added to each sector. To conduct trick play, an I picture, a P picture and a B picture contained in a GOP layer inside a bit stream of compressed image data are extracted and reproduced in accordance with a reproduction speed by looking up a trick play table.Type: ApplicationFiled: May 29, 2001Publication date: November 1, 2001Applicant: Hitachi, Ltd.Inventors: Masayuki Hirabayashi, Hideaki Suzuki, Masafumi Nakamura, Yutaka Nagai, Toshifumi Takeuchi
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Patent number: 6308003Abstract: An optical disk recording thereon compressed moving picture data and an optical disk reproduction apparatus each capable of easily effecting trick play such as high speed reproduction and a retrieval operation at a high speed. Additional information necessary for trick play is recorded in an arbitrary area of an optical disk such as a TOC (Table of Contents) or a leading sector (sector 0) of the disk, and a sector address is added to each sector. To conduct trick play, an I picture, a P picture and a B picture contained in a GOP layer inside a bit stream of compressed image data are extracted and reproduced in accordance with a reproduction speed by looking up a trick play table.Type: GrantFiled: October 29, 1999Date of Patent: October 23, 2001Assignee: Hitachi, Ltd.Inventors: Masayuki Hirabayashi, Hideaki Suzuki, Masafumi Nakamura, Yutaka Nagai, Toshifumi Takeuchi
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Patent number: 6295596Abstract: Arrangement to temporarily store matrix-formed data with error correction codes in row and column directions in memory, and read out the data fast in both row and column directions to perform error correction. When error correction is performed in the error correction circuit 6, data inputted from the data input circuit 7 is placed on the memory 11 so that the data is read out from a plurality of banks on the memory 11 while the banks are switched.Type: GrantFiled: September 18, 1998Date of Patent: September 25, 2001Assignee: Hitachi, Ltd.Inventors: Masayuki Hirabayashi, Yutaka Nagai, Toshifumi Takeuchi
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Patent number: 6233649Abstract: A method of reproducing digital signals recorded on a disk having first and second recording surfaces. The digital signals are in the form of a data frame including a lead-in block and n data blocks. The lead-in block has a same format as the n data blocks. n block addresses are assigned to the n data blocks. Information identifying an area on the disk in which the n data blocks is recorded is assigned to the n data blocks. m data blocks (0<m<n) are recorded on the first recording surface, and remaining (n−m) data blocks are recorded on the second recording surface. The lead-in block is recorded at the head of the data frame, and includes recording area identifying information identifying an area on the disk in which the lead-in block is recorded, and disk information identifying (1) a number of recording surfaces, (2) the block address of one of the m data blocks recorded last on the first recording surface, and (3) the block address of a last one of the n data blocks in the data frame.Type: GrantFiled: June 28, 1999Date of Patent: May 15, 2001Assignee: Hitachi, Ltd.Inventors: Hiroshi Hirayama, Osamu Kawamae, Masayuki Hirabayashi, Yutaka Nagai, Toshifumi Takeuchi
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Patent number: D517985Type: GrantFiled: June 3, 2004Date of Patent: March 28, 2006Assignee: Mitsumi Electric Co., Ltd.Inventors: Masayuki Hirabayashi, Takenori Kinkawa, Hirotaka Yamamoto
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Patent number: D452842Type: GrantFiled: May 11, 2001Date of Patent: January 8, 2002Assignee: Mitsumi Electric Co., Ltd.Inventors: Terutomo Kajiwara, Masayuki Hirabayashi, Hirotaka Yamamoto