Patents by Inventor Hitoshi Ogawa

Hitoshi Ogawa 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: 20090085634
    Abstract: A transceiver that reduces power consumption when data is transferred between devices in different modes. The transceiver is arranged in a first node and in a second node, which communicate between each other. A first control unit generates a first signal transmitted from the first node in predetermined time intervals during a first period that establishes an environment for communication between the first node and the second node. The second node transmits a second signal transmitted in response to the first signal. The first control unit generates a third signal upon detection of the second signal. A second control unit gradually decreases amplitude of the first signal based on the third signal to set the amplitude of the first signal to a predetermined amplitude so that the second node is receivable of the first signal.
    Type: Application
    Filed: July 31, 2008
    Publication date: April 2, 2009
    Applicant: FUJITSU MICROELECTRONICS LIMITED
    Inventors: Hideaki WATANABE, Hitoshi OGAWA
  • Patent number: 7430085
    Abstract: A signal processing device having a feature of analog-to-digital converting a burst signal has a feature of selecting data bus to notify a disk control device 2 of a conversion result via an NRZ data bus. The disk control device 2 includes means for storing the result of the analog-to-digital conversion of said servo positional signal. The positional signal of a head of the disk device is digitalized in an R/W channel. Sampling for digital conversion is performed in only a window which is defined only in the vicinity of peaks of the positional signal. The values of peaks which are obtained by sampling are averaged by an averaging circuit. This enables the influence of noise occurred outside of the window to be eliminated. Although the noise in the window is sampled, its adverse influence is suppressed by the averaging processing.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: September 30, 2008
    Assignee: Hitachi Global Storage Technologies Japan, Ltd.
    Inventors: Motoyasu Tsunoda, Yukie Miyazawa, legal representative, Hitoshi Ogawa, Ryutaro Horita, Takashi Nara, Masatoshi Nishina, Katsumi Yamamoto, Shoichi Miyazawa
  • Patent number: 7367127
    Abstract: A hair trimmer with a rattle dampening structure, includes an elongated main body; a cutter block having a stationary blade and a movable blade, both of which are comb-shaped and are slidably in contact with each other, the cutter block being protrudingly installed at one end of the main body; a comb-shaped cylindrical comb attachment covering the cutter block such that it is movable in a projected direction of the cutter block; and an elastic member for elastically pressing the comb attachment for trim length adjustment, in a direction approximately perpendicular to a moving direction of the comb attachment.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: May 6, 2008
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Makoto Nakakura, Hitoshi Ogawa, Seiko Yabuuchi
  • Publication number: 20070289144
    Abstract: A hair clipper (1) comprises a replaceable blade block (3) having a comb-shaped stationary blade (5) and a comb-shaped moving blade (6) which is reciprocally movable in a widthwise direction of the hair clipper (1), a main body (2) having a motor (8) and a driving member (14) to transfer and to transmit a driving force of the motor (8) to reciprocal motion of the moving blade (6), and to which the blade block (3) is detachably attached, and a pressing mechanism (4) to press the moving blade (6) toward the stationary blade (5). The pressing mechanism (4) is provided on the main body (2) and has at least one contact portion (4b) which reciprocally moves in synchronism with a reciprocal motion of the moving blade (6).
    Type: Application
    Filed: June 13, 2007
    Publication date: December 20, 2007
    Applicant: MATSUSHITA ELECTRIC WORKS, LTD.
    Inventors: Kazuhiro MORISUGI, Seiko YABUUCHI, Toshio IKUTA, Hitoshi OGAWA
  • Patent number: 7249416
    Abstract: Disclosed is a comb-vibration preventing structure for a hair cutter including a cutter body and a cutting-length adjusting comb adapted to be fitted on an upper portion of the cutter body and vertically moved in a sliding manner so as to adjust a cutting length. The comb-vibration preventing structure comprises a wire spring for urging each of opposite inner side surfaces of the cutting-length adjusting comb in an outward thrusting manner in an opposite lateral direction. The comb-vibration preventing structure can prevent vibrations of the cutting-length adjusting comb to reduce chatter noises, and achieve enhanced usability while facilitating quality control.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: July 31, 2007
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Takashi Yamaguchi, Hitoshi Ogawa
  • Patent number: 7227712
    Abstract: A disk drive apparatus mounting socket includes a socket portion which supports a disk drive apparatus, a lead portion which is connected to the disk drive apparatus supported by the socket portion, and a terminal unit which is electrically connected to the lead portion and to circuits on a board. A disk drive apparatus, which is connectable to an information processing unit, includes a connecting unit which connects the disk drive apparatus to the information processing unit, and an interface unit which controls the disk drive apparatus in response to a control signal, a data bus signal, and an address bus signal which are generated by the information processing unit and are inputted to the disk drive apparatus from the information processing unit via the connecting unit.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: June 5, 2007
    Assignee: Hitachi Global Storage Technologies Japan, Ltd.
    Inventors: Hitoshi Ogawa, Eisaku Saiki, Satoshi Kawamura, Kiyoshi Honda, Kazuhisa Shiraishi, Fukashi Ohi
  • Publication number: 20070028447
    Abstract: To provide a nose hair cutter, comprising a blade configures to cut nose hair, a motor which drives a movable blade of the blade, and a fan which is driven by the motor to suck pieces of the nose hair cut by the blade into a body.
    Type: Application
    Filed: August 1, 2006
    Publication date: February 8, 2007
    Applicant: MATSUSHITA ELECTRIC WORKS, LTD.
    Inventors: Hitoshi OGAWA, Hisao NAKAGAWA
  • Publication number: 20060285238
    Abstract: A signal processing device having a feature of analog-to-digital converting a burst signal has a feature of selecting data bus to notify a disk control device 2 of a conversion result via an NRZ data bus. The disk control device 2 includes means for storing the result of the analog-to-digital conversion of said servo positional signal. The positional signal of a head of the disk device is digitalized in an R/W channel. Sampling for digital conversion is performed in only a window which is defined only in the vicinity of peaks of the positional signal. The values of peaks which are obtained by sampling are averaged by an averaging circuit. This enables the influence of noise occurred outside of the window to be eliminated. Although the noise in the window is sampled, its adverse influence is suppressed by the averaging processing.
    Type: Application
    Filed: August 22, 2006
    Publication date: December 21, 2006
    Inventors: Motoyasu Tsunoda, Shoichi Miyazawa, Yukie Miyazawa, Hitoshi Ogawa, Ryutaro Horita, Takashi Nara, Masatoshi Nishina, Katsumi Yamamoto
  • Patent number: 7149930
    Abstract: The present invention provides a disk unit suitable for recording and reproducing time-series continuous data such as AV data. When data received as data to be written into recording medium is audio and/or video data, (this data is called AV data hereinafter), address information 403c identifying a beginning sector of the recording medium in which the data has been written is registered in file control information 402. Also, it is determined whether or not the AV data is contiguous with AV data just before written. If it is contiguous, the beginning sector is not registered in control information storage means. Thus continuous data can be handled as one piece of data.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: December 12, 2006
    Assignee: Hitachi Global Storage Technologies Japan, Ltd.
    Inventors: Hitoshi Ogawa, Seiichi Domyo, Yukie Hiratsuka
  • Patent number: 7139143
    Abstract: A signal processing device for analog-to-digital converting a burst signal has a feature of selecting a data bus to notify a disk control device of a conversion result via an NRZ data bus. The disk control device stores the result of the analog-to-digital conversion of the servo positional signal. The positional signal of a head of the disk device is digitized in a R/W channel. Sampling for digital conversion is performed in only a window which is defined only in the vicinity of peaks of the positional signal. The values of peaks which are obtained by sampling are averaged by an averaging circuit. This enables the influence of noise occurred outside of the window to be eliminated. Although the noise in the window is sampled, its adverse influence is suppressed by the averaging processing.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: November 21, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Motoyasu Tsunoda, Yukie Miyazawa, legal representative, Hitoshi Ogawa, Ryutaro Horita, Takashi Nara, Masatoshi Nishina, Katsumi Yamamoto, Shoichi Miyazawa, deceased
  • Patent number: 7100286
    Abstract: A hair trimmer with a trim length adjustment mechanism includes an elongated main body; a cutter block having a stationary blade and a movable blade, both of which are comb-shaped and slidably in contact with each other, the cutter block being protrudingly installed at one end portion of the main body; a comb-shaped cylindrical comb attachment for trim length adjustment; a connecting member disposed in the main body and engaged with the comb attachment; a rotary dial, capable of transmitting its turning movement to the connecting member, installed at one side of the main body approximately in parallel with said one side; and an operation switch, disposed over a portion of the main body where the rotary dial is installed, for turning on and off an operation of the main body.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: September 5, 2006
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Makoto Nakakura, Hitoshi Ogawa, Seiko Yabuuchi
  • Patent number: 7073037
    Abstract: An information recording/reproducing system in which a host system making access to a magnetic disk apparatus can be limited to a specific one. A magnetic disk apparatus includes an authentication key generating block for generating an authentication key on the basis of physical characteristic(s) of the magnetic disk apparatus itself. The magnetic disk apparatus and the host system have, respectively, authentication key recording block for recording the authentication key and authentication data generating block for generating authentication data on the basis of the authentication key. Access from the host system to information of the magnetic disk apparatus is controlled based on the authentication data of the host system and the authentication data of the magnetic disk apparatus.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: July 4, 2006
    Assignee: Hitachi Global Storage Technologies Japan, Ltd.
    Inventors: Atsushi Okuyama, Seiichi Domyo, Hitoshi Ogawa, Kazuaki Usui
  • Publication number: 20060114588
    Abstract: Embodiments of the present invention efficiently format long sectors, without decreasing the performance, in a magnetic disk drive in which servo sectors are radially formed at regular intervals, and make full use of the ECC performance that is enhanced by the long sectors. In one embodiment, a data format in each zone on a magnetic disk is completed by a plurality of tracks N (N is an integer, which is 2 or more). The storage capacity per track of the outermost radius zone Z#1 is 150 kB. In this zone, long sectors each having a length of 32 kB are formatted with the number of tracks per format N#1=3. The storage capacity per track of the innermost radius zone Z#m is 80 kB. In this zone, long sectors each having a length of 32 kB are formatted with the number of tracks per format N#n=2.
    Type: Application
    Filed: November 9, 2005
    Publication date: June 1, 2006
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Naoki Satoh, Terumi Takashi, Hitoshi Ogawa, Hiroyuki Tsuchinaga
  • Publication number: 20060069845
    Abstract: In one embodiment, a write/read apparatus includes an external interface section for data input; an external interface section for data output; a memory for temporarily storing the data that is input through the external interface section for data input and written on the recording medium and the data that is read from the recording medium and sent to the outside through the external interface section for data output; an address generating section for generating unique addresses associated with physical block addresses of the recording medium; a flag generating section for generating flags for prohibiting overwriting of the data to be written on the recording medium; and a processing section for adding the unique addresses generated in the address generating section to the data that is stored in the memory and that is to be written on the recording medium. The data with the addition of the flags generated in the flag generating section and the unique addresses is written on the recording medium.
    Type: Application
    Filed: September 16, 2005
    Publication date: March 30, 2006
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Yoshiteru Ishida, Hitoshi Ogawa, Atsushi Saito, Terumi Takashi
  • Publication number: 20060042095
    Abstract: Disclosed is a comb-vibration preventing structure for a hair cutter including a cutter body 4 and a cutting-length adjusting comb 3 adapted to be fitted on an upper portion of the cutter body 4 and vertically moved in a sliding manner so as to adjust a cutting length. The comb-vibration preventing structure comprises a wire spring (elastic member) 10 for urging each of opposite inner side surfaces 3a, 3b of the cutting-length adjusting comb 3 in an outward thrusting manner in an opposite lateral direction P. The comb-vibration preventing structure can prevent vibrations of the cutting-length adjusting comb to reduce chatter noises, and achieve enhanced usability while facilitating quality control.
    Type: Application
    Filed: August 26, 2005
    Publication date: March 2, 2006
    Applicant: Matsushita Electric Works, Ltd.
    Inventors: Takashi Yamaguchi, Hitoshi Ogawa
  • Publication number: 20060047898
    Abstract: Embodiment of the present invention provide a technique for carrying out work in a short time to prevent without fail data stored in a read/write device from leaking to persons other than an authorized user. There are provided a read/write device, and a format management method for managing a format of data stored in the read/write device. A given change factor is specified for a format of data stored in the read/write device. A format change judgment part for judging whether or not the change factor exists is provided in the read/write device or in a host device connected to the read/write device. Then, a given offset coefficient is generated for a format table according to an instruction from a format change judgment part, and a different format table is generated according to the generated offset coefficient and the format table.
    Type: Application
    Filed: August 26, 2005
    Publication date: March 2, 2006
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Yoshiteru Ishida, Hitoshi Ogawa, Terumi Takashi
  • Patent number: 6954876
    Abstract: Defect management information of a disk apparatus is read efficiently. Pieces of defective track information, which each indicate existence of defective tracks for a group of a plurality of tracks, are stored being associated with physical track numbers. And, pieces of defect information on defective tracks are stored in predetermined groups. Further, pieces of pointer information that indicate start addresses of storage address for the above-mentioned predetermined groups are stored. When a processing means receives an instruction of read or write to a track of a storage medium, the processing means refers to a piece of defective track information based on the above-mentioned addresses. When existence of a defective track is indicated, the processing means refers to a piece of pointer information corresponding to the group relating to the referred piece of defective track information.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: October 11, 2005
    Assignee: Hitachi Global Storage Technologies Japan, Ltd.
    Inventors: Hitoshi Ogawa, Takushi Nishiya, Soichi Isono, Tomoki Oura
  • Publication number: 20050138817
    Abstract: A hair trimmer includes a main body; a cutter block having a stationary blade and a movable blade, both of which are comb-shaped and are slidably in contact with each other, the cutter block being protrudingly installed at one end of the main body; and a comb attachment having a plurality of comb tooth-shaped sections and covering the cutter block, wherein the comb tooth-shaped sections are provided with cut-off hair deflectors to prevent hairs cut by the cutter block from outwardly scattering away from the comb attachment, cut-off hair deflectors located between two neighboring comb tooth-shaped sections are disposed at relatively inner and outer positions.
    Type: Application
    Filed: December 21, 2004
    Publication date: June 30, 2005
    Applicant: Matsushita Electric Works, Ltd.
    Inventors: Takashi Yamaguchi, Hitoshi Ogawa
  • Publication number: 20050111130
    Abstract: A disk drive apparatus mounting socket includes a socket portion which supports a disk drive apparatus, a lead portion which is connected to the disk drive apparatus supported by the socket portion, and a terminal unit which is electrically connected to the lead portion and to circuits on a board. A disk drive apparatus, which is connectable to an information processing unit, includes a connecting unit which connects the disk drive apparatus to the information processing unit, and an interface unit which controls the disk drive apparatus in response to a control signal, a data bus signal, and an address bus signal which are generated by the information processing unit and are inputted to the disk drive apparatus from the information processing unit via the connecting unit.
    Type: Application
    Filed: December 3, 2004
    Publication date: May 26, 2005
    Inventors: Hitoshi Ogawa, Eisaku Saiki, Satoshi Kawamura, Kiyoshi Honda, Kazuhisa Shiraishi, Fukashi Ohi
  • Patent number: RE39253
    Abstract: Apparatus for recording and/or reproducing user data recorded on a record medium. The apparatus includes record encoder for converting original user data into encoded user data of a predetermined record code and as error correcting code generator for generating original error correcting code data for correcting an error with respect to the encoded user data. A write unit records the encoded user data and the error correcting code on the record medium. A read unit reads the recorded data and the reproduced data is error corrected so as to provide the original user data.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: August 29, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Yukari Katayama, Yukie Miyazawa, Hitoshi Ogawa, Masatoshi Nishina, Shoichi Miyazawa