Patents by Inventor Kazunori Uemura
Kazunori Uemura 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: 20080047005Abstract: In an access monitoring method and device for shared memory which can monitor access information from an arbitrary processor to a shared memory regardless of a type of a multi-processor system, a bus interface within a shared memory board receives, from an arbitrary request source processor among a plurality of processors, a request packet in which an identifier of a processor and an acquisition request (or a release request) of an access right to the shared memory are set. The bus interface sets (or resets) the identifier of the request source processor in the shared memory depending on the acquisition request (or the release request) of the access right, generates an answer packet indicating an acquisition (or a release) of the access right corresponding to the setting (or the resetting) of the identifier of the request source processor, and broadcasts the answer packet to all of the processors.Type: ApplicationFiled: August 14, 2007Publication date: February 21, 2008Applicant: FUJITSU LIMITEDInventors: Syouichi Urata, Kouki Shigaki, Eiichi Tsuiji, Kazunori Uemura, Ryouko Tamura
-
Publication number: 20080040552Abstract: The occurrence of a failure in any of an operational processor and a standby processor is monitored, and when a failure occurs in the operational processor, switching to the standby processor is made. A cache memory of each processor has a plurality of ports through which data can be read and written simultaneously. A cache memory controller of the operational processor transfers an update for the cache memory to the cache memory of the standby processor by using a port different from the port used for updating. A cache memory controller of the standby processor writes the received update into the cache memory by using a port different from the port used for updating.Type: ApplicationFiled: August 1, 2007Publication date: February 14, 2008Applicant: FUJITSU LIMITEDInventors: Eiichi TSUIJI, Noaki Kawasaki, Kunio Yamaguchi, Kazunori Uemura, Ryouko Tamura
-
Publication number: 20080019250Abstract: Disclosed herein is an information recording/reproducing apparatus that includes a first and a second recording/reproducing modules, a buffer memory to store information temporally, and a control module that switches between a first mode and a second mode when the information is dubbed from the first recording/reproducing module to the second recording/reproducing module. In the first mode, information in the first recording/reproducing module is reproduced and stored in the buffer memory. In the second mode, the information stored in the buffer memory is recorded in the second recording/reproducing module. The apparatus further includes a temperature detecting module. Depending on the temperature detected by this module, the apparatus changes the movement of the second recording/reproducing module in the first mode and the movement of the first recording/reproducing module in the second mode.Type: ApplicationFiled: February 27, 2007Publication date: January 24, 2008Inventors: Akira Ando, Kazunori Uemura, Masahiro Fujimoto
-
Publication number: 20070297308Abstract: An information recording apparatus such as an optical disc that can avoid an unrecordable condition between a power-on operation and an available state for recording thereby to solve a problem that an image taking chance is missed in a recording step, wherein its constitution is such that: receiving a command to turn on the apparatus after switching, a system controller drives a power-supply circuit to activate a drive controller and a memory controller; if the optical disc is not replaced while in power-off operation by a sub-battery, the system controller issues a request for high-speed activation, based on information stored in an EEPROM, to the drive controller, and drives plural drive control units one after another thereby to establish an activation period confirmedly, allowing the memory controller to accept a request for a recording start from the system controller without waiting for a report of activation completion to be issued by the drive controller.Type: ApplicationFiled: August 17, 2007Publication date: December 27, 2007Applicant: Hitachi, Ltd.Inventors: Kouji Minabe, Hideo Nishijima, Hiroaki Ono, Kazunori Uemura, Masahiro Fujimoto
-
Patent number: 7310476Abstract: An imaging apparatus is provided which performs optimum zooming and focusing even after long use. The imaging apparatus includes: a lens which is movable along the optical axis; a driving module to drive the lens; a driving amount calculation module to determine a drive count indicating the number of times the driving module has been operated or a drive time for which the driving module has been operated; a storage module to store compensation amounts which are used to compensate for the mechanical play of the driving module according to the drive count or the drive time; and a control module to control the driving module wherein a compensation amount appropriate for the drive count or time determined by the driving amount calculation module is selected from the compensation amounts stored in the storage module and the selected compensation amount is used to compensate for the mechanical play of the driving module.Type: GrantFiled: April 25, 2005Date of Patent: December 18, 2007Assignee: Hitachi, Ltd.Inventors: Hideharu Ono, Shigehisa Rokuta, Makoto Kikuchi, Kazunori Uemura
-
Patent number: 7269112Abstract: An information recording apparatus such as an optical disc that can avoid an unrecordable condition between a power-on operation and an available state for recording thereby to solve a problem that an image taking chance is missed in a recording step, wherein its constitution is such that: receiving a command to turn on the apparatus after switching, a system controller drives a power-supply circuit to activate a drive controller and a memory controller; if the optical disc is not replaced while in power-off operation by a sub-battery, the system controller issues a request for high-speed activation, based on information stored in an EEPROM, to the drive controller, and drives plural drive control units one after another thereby to establish an activation period confirmedly, allowing the memory controller to accept a request for a recording start from the system controller without waiting for a report of activation completion to be issued by the drive controller.Type: GrantFiled: August 31, 2006Date of Patent: September 11, 2007Assignee: Hitachi, Ltd.Inventors: Kouji Minabe, Hideo Nishijima, Hiroaki Ono, Kazunori Uemura, Masahiro Fujimoto
-
Publication number: 20070122114Abstract: In a recording apparatus equipped with a drive apparatus for recording data on a recording medium such as an optical disk, and a function capable of initializing a management information area of the recording medium, a storage unit is further provided. The storage unit stores thereinto initializing data which is used to be recorded on the management information area of the recording medium when the recording medium is initialized. In the case that an initializing operation is instructed, the recording apparatus records the initializing data which has been stored in the storage unit on the management information area of the recording medium from a beginning area thereof. Thus, a user no longer waits to use the recording medium until the initializing operation is accomplished when such a recording medium as a new optical disk is used, resulting in an improvement of user operability.Type: ApplicationFiled: October 3, 2006Publication date: May 31, 2007Applicant: Hitachi, Ltd.Inventors: Keisuke Kawamoto, Masahiro Fujimoto, Kazunori Uemura, Kenji Ichige, Keiji Nagayama
-
Publication number: 20060291350Abstract: An information recording apparatus such as an optical disc that can avoid an unrecordable condition between a power-on operation and an available state for recording thereby to solve a problem that an image taking chance is missed in a recording step, wherein its constitution is such that: receiving a command to turn on the apparatus after switching, a system controller drives a power-supply circuit to activate a drive controller and a memory controller; if the optical disc is not replaced while in power-off operation by a sub-battery, the system controller issues a request for high-speed activation, based on information stored in an EEPROM, to the drive controller, and drives plural drive control units one after another thereby to establish an activation period confirmedly, allowing the memory controller to accept a request for a recording start from the system controller without waiting for a report of activation completion to be issued by the drive controller.Type: ApplicationFiled: August 31, 2006Publication date: December 28, 2006Applicant: Hitachi, Ltd.Inventors: Kouji Minabe, Hideo Hishijima, Hiroaki Ono, Kazunori Uemura, Masahiro Fujimoto
-
Patent number: 7116620Abstract: An information recording apparatus such as an optical disc that can avoid an unrecordable condition between a power-on operation and an available state for recording thereby to solve a problem that an image taking chance is missed in a recording step, wherein its constitution is such that: receiving a command to turn on the apparatus after switching, a system controller drives a power-supply circuit to activate a drive controller and a memory controller; if the optical disc is not replaced while in power-off operation by a sub-battery, the system controller issues a request for high-speed activation, based on information stored in an EEPROM, to the drive controller, and drives plural drive control units one after another thereby to establish an activation period confirmedly, allowing the memory controller to accept a request for a recording start from the system controller without waiting for a report of activation completion to be issued by the drive controller.Type: GrantFiled: April 25, 2003Date of Patent: October 3, 2006Assignee: Hitachi, Ltd.Inventors: Kouji Minabe, Hideo Nishijima, Hiroaki Ono, Kazunori Uemura, Masahiro Fujimoto
-
Publication number: 20060218441Abstract: A method for accessing shared memory cards from each of plural processor cards is disclosed. The shared memory cards are composed of a shared memory card of an operating system and a shared memory card of a standby system in a redundant configuration, and each of plural processor cards individually access the shared memory cards. Each of the plural processor cards is connected to the shared memory card of the operating system and the shared memory card of the standby system in a point-to-point structure via corresponding serial buses and executes data transmission on a one to one basis to/from the shared memory card of the operating system and the shared memory card of the standby system.Type: ApplicationFiled: April 26, 2006Publication date: September 28, 2006Inventors: Hideo Okawa, Kazunori Uemura, Kunio Yamaguchi
-
Publication number: 20060140095Abstract: An optical disk apparatus includes an intermittent operation unit that causes a recording/standby memory device to accumulate an audio signal and video signal to be recorded and to intermittently read the signals, and causes a spindle motor control circuit and optical head control circuit to be intermittently actuated in response to the signals so that the signals can be recorded on an optical disk, a learning operation unit that obtains control values suited to the spindle motor control circuit and optical head control circuit, and a unit that judges about the necessity of the learning operation according to a temperature change and a surface condition of the optical disk.Type: ApplicationFiled: December 22, 2005Publication date: June 29, 2006Inventors: Yusuke Kazami, Kazunori Uemura, Kouji Minabe
-
Publication number: 20060087944Abstract: In a write once type optical disc, when ejecting the disc and turning power OFF, it is necessary to update record management data on the disc so that the record management data on the disc coincide with the record management data on the memory. Here, the update of the record management data on the disc requires a certain time. The present invention provides a user-friendly recording/reproduction apparatus including a unit for judging whether the disc record management information can be updated according to the ratio of the recorded capacity with respect to the recording-enabled capacity. Upon completion of the user data recording, the disc record management information is recorded so that the record management data is not updated when power is turned OFF or the disc is ejected, thereby reducing the time required for the power turning OFF and the disc ejection.Type: ApplicationFiled: October 26, 2005Publication date: April 27, 2006Applicant: Hitachi, Ltd.Inventors: Kazunori Uemura, Yusuke Kazami
-
Publication number: 20050281551Abstract: An imaging apparatus is provided which performs optimum zooming and focusing even after long use. The imaging apparatus includes: a lens which is movable along the optical axis; a driving module to drive the lens; a driving amount calculation module to determine a drive count indicating the number of times the driving module has been operated or a drive time for which the driving module has been operated; a storage module to store compensation amounts which are used to compensate for the mechanical play of the driving module according to the drive count or the drive time; and a control module to control the driving module wherein a compensation amount appropriate for the drive count or time determined by the driving amount calculation module is selected from the compensation amounts stored in the storage module and the selected compensation amount is used to compensate for the mechanical play of the driving module.Type: ApplicationFiled: April 25, 2005Publication date: December 22, 2005Applicant: Hitachi, Ltd.Inventors: Hideharu Ono, Shigehisa Rokuta, Makoto Kikuchi, Kazunori Uemura
-
Publication number: 20040254436Abstract: The purpose of the present invention is to provide an automatic, continuous measuring device for a ventricle volume that is able to measure blood conductivity and parallel conductance, which are regarded as necessary for the calculation of ventricular volume from the conductance measured, using a conductance catheter inserted into the ventricle without special procedures such as blood sampling and saline infusion.Type: ApplicationFiled: March 10, 2004Publication date: December 16, 2004Inventors: Kenji Sunagawa, Kazunori Uemura
-
Patent number: 6771574Abstract: In a disk device, when processing is resumed after replacing the disk or cutting off the power supply, in order to acquire disk-related information in a short period of time and reduce the start-up time, the effectiveness of management information recorded on the disk is judged, the finding of the judgment is stored into a memory means capable of storing even when power supply is off, the management information is read out of some of the recording areas of the disk in advance of a recording or reproducing operation if the stored information on the finding of the judgment indicates effectiveness for the inserted disk.Type: GrantFiled: November 27, 2002Date of Patent: August 3, 2004Assignee: Hitachi, Ltd.Inventors: Masahiro Fujimoto, Kouji Minabe, Hideo Nishijima, Kazunori Uemura
-
Publication number: 20030227847Abstract: An information recording apparatus such as an optical disc that can avoid an unrecordable condition between a power-on operation and an available state for recording thereby to solve a problem that an image taking chance is missed in a recording step, wherein its constitution is such that: receiving a command to turn on the apparatus after switching, a system controller drives a power-supply circuit to activate a drive controller and a memory controller; if the optical disc is not replaced while in power-off operation by a sub-battery, the system controller issues a request for high-speed activation, based on information stored in an EEPROM, to the drive controller, and drives plural drive control units one after another thereby to establish an activation period confirmedly, allowing the memory controller to accept a request for a recording start from the system controller without waiting for a report of activation completion to be issued by the drive controller.Type: ApplicationFiled: April 25, 2003Publication date: December 11, 2003Applicant: Hitachi, Ltd.Inventors: Kouji Minabe, Hideo Nishijima, Hiroaki Ono, Kazunori Uemura, Masahiro Fujimoto
-
Publication number: 20030151992Abstract: In a disk device, when processing is resumed after replacing the disk or cutting off the power supply, in order to acquire disk-related information in a short period of time and reduce the start-up time, the effectiveness of management information recorded on the disk is judged, the finding of the judgment is stored into a memory means capable of storing even when power supply is off, the management information is read out of some of the recording areas of the disk in advance of a recording or reproducing operation if the stored information on the finding of the judgment indicates effectiveness for the inserted disk.Type: ApplicationFiled: November 27, 2002Publication date: August 14, 2003Applicant: Hitachi, Ltd.Inventors: Masahiro Fujimoto, Kouji Minabe, Hideo Nishijima, Kazunori Uemura
-
Patent number: 6046770Abstract: Smooth interlocking operation of an optical zooming device and an electronic zooming device are realized by storing an amount of mechanical play of the optical zooming device in a play memory and then calculating the amount of mechanical play of the optical zooming from both the stored amount of mechanical play and lens drive control information to change the interlocking operation starting point of the optical zooming device and the electronic zooming device.Type: GrantFiled: March 10, 1997Date of Patent: April 4, 2000Assignees: Hitachi, Ltd., Hitachi Microcomputer Systems Ltd.Inventors: Kazunori Uemura, Takashi Takahashi