Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Ishizuka, Kawasaki

Atsuo Ishizuka, Kawasaki JP

Patent application numberDescriptionPublished
20090304329OPTICAL-SWITCH TESTING APPARATUS, OPTICAL-SIGNAL SWITCHING APPARATUS, OPTICAL-SWITCH TESTING METHOD, AND CONTROL METHOD FOR OPTICAL-SIGNAL SWITCHING - A light source supplies optical signal to an optical switch and a detector detects light receiving level. A control unit changes a deflection control amount for changing an angle of a tilt mirror, and outputs the deflection control amount to a driving unit. When an input and an output ports are same, optical offset of the tilt mirror is calculated based on optimal angle at which the light detector detects an optimal point of the light receiving level. Whenever the input and the output port are different, a structure parameter of the tilt mirror is calculated based on the optical offset and the optimal angle. The optical offset and the structure parameter are stored in a memory as a test result.12-10-2009

Patent applications by Atsuo Ishizuka, Kawasaki JP

Kenji Ishizuka, Kawasaki JP

Patent application numberDescriptionPublished
20110043525DRAWING CORRECTION ASSISTING APPARATUS, DRAWING CORRECTION ASSISTING METHOD, AND STORAGE MEDIUM - A drawing correction assisting method executed by a computer, the method includes: dividing a drawing area of two-dimensional drawing data into unit areas and storing positional information for every unit area in a storage unit; allocating at least one of the unit areas to each of the plurality of drawing elements included in the drawing area on the basis of arrangement information about each the drawing element and the positional information for every unit area and storing association information associating each drawing element with the allocated at least one unit area in the storage unit; and determining whether interference occurs between the plurality of drawing elements on the basis of the presence of duplication of the allocated unit areas in the stored association information.02-24-2011

Masaaki Ishizuka, Kawasaki JP

Patent application numberDescriptionPublished
20090177560METHOD AND DEVICE FOR PARTS MANAGEMENT - A parts management method is performed by a parts management device for managing parts used to produce an assembly product. Firstly, parts identification information and number of parts corresponding to an assembly product of which production is started are read from a storage device, respectively, as used-parts identification information and a used number. Secondly, parts container information of a parts container that accommodates parts used for an assembly product of which production is started is read from a storage device that stores parts container information, for each parts container. Then, parts container information that includes an updated number of parts is written into a storage device. The updated number of parts is obtained by subtracting the number of used parts from number of parts identified by the used-parts identification information read in the firstly reading.07-09-2009

Masahiko Ishizuka, Kawasaki JP

Patent application numberDescriptionPublished
20080267383Electronic telephone directory and telephone directory management method - An electronic telephone directory provided in a cell phone includes a telephone directory storage for storing entry data of an entry registered in the electronic telephone directory. The entry data includes an entry identifier for identifying the entry, an entry name, a telephone number, and link identifiers of link destinations. The electronic telephone directory also includes tree display means for displaying the entry name included in entry data of each entry registered in the telephone directory storage, associated with the entry names included in entry data of the link destinations in a tree form.10-30-2008

Nobuhiro Ishizuka, Kawasaki JP

Patent application numberDescriptionPublished
20110237184ON-BOARD DEVICE, INFORMATION COMMUNICATION SYSTEM, METHOD FOR CONTROLLING COMMUNICATION OF ON-BOARD DEVICE, AND COMPUTER PROGRAM THEREFOR - An on-board device 09-29-2011

Takaharu Ishizuka, Kawasaki JP

Patent application numberDescriptionPublished
20090300410SEMICONDUCTOR INTEGRATED CIRCUIT, CONTROL METHOD, AND INFORMATION PROCESSING APPARATUS - A semiconductor integrated circuit includes a circuit block connected to an arithmetic processing unit via a bus, a power supply noise data generator which is configured to generate a power supply noise data signal by converting power supply noise generated in power supply voltage of power supply operates the circuit block, an error detector which is configured to detect an error of data outputted from the circuit block to the bus, and a write controller which is configured to associate power supply noise information based on the power supply noise data signal with data on the bus and write the data in a storage unit, and to stop to write the data in response to the detection of the error by the error detector.12-03-2009
20100077262INFORMATION PROCESSING DEVICE AND ERROR PROCESSING METHOD - An information processing device having two processing units capable of operating in synchronization with each other, includes: a common unit capable of outputting an identical signal to the two processing units; detection units that are respectively provided for the processing units and each detects errors occurred in corresponding processing unit respectively; a comparison unit that compares outputs from the two processing units; and a control unit that controls signals from the processing units to the common unit, based on a detection result of the detection units and a comparison result of the comparison unit, and determines, if errors of an identical type are simultaneously detected by the detection units, that the errors are due to an error of the common unit.03-25-2010
20110047431Verification device, verification method, and verification program - A verification device includes a data verifying unit that verifies whether data in a packet has an error using a first or a second verification mode, a packet generating unit that generates a packet in accordance with a first packet generation mode or a second packet generation mode respectively corresponding to the first and the second verification modes, a failure monitoring unit that monitors a failure of a transmission line that requires a switching of the verification mode, a switching packet transmitting unit that transmits to a destination device, a switching packet for informing the switching of the verification mode used by the data verifying unit when the failure monitoring unit detects a failure or a removal of a failure, a generation mode switching unit that switches the generation mode, and a verification mode switching unit that switches the verification mode to the one informed by the switching packet.02-24-2011

Patent applications by Takaharu Ishizuka, Kawasaki JP

Toshihiro Ishizuka, Kawasaki JP

Patent application numberDescriptionPublished
20100007365SOCKET FOR DOUBLE ENDED PROBE, DOUBLE ENDED PROBE, AND PROBE UNIT - A socket for a double ended probe with a first probe and a second probe includes a hollow pipe member housing the first probe and the second probe, the first probe and the second probe are arranged in an axial direction of the socket, and the socket includes an abutment holding the first probe and the second probe at predetermined positions on an inner side of the hollow pipe member.01-14-2010
20100105297POLISHING APPARATUS - A polishing apparatus includes a cyclic mechanism moving cyclically in a certain direction, a holder moving cyclically by the cyclic mechanism in a direction parallel to an object to be polished, a plurality of polishing pins held on the holder, a magnet member including a first part which is exposed on a front face side of the polishing pin and a second part which is not exposed on the front face side of the polishing pin, a part of the second part being covered with a non-magnetic material, and a polishing member held on the polishing pin by magnetic force of the magnet member and polishing a tip of the object to be polished by the cyclic motion of the cyclic mechanism, wherein a contact area of the polishing member and the polishing pin includes a contact area of the magnet member and the polishing member.04-29-2010

Yosuke Ishizuka, Kawasaki JP

Patent application numberDescriptionPublished
20090064211Optical Disc Apparatus - To prevent an optical disc from being removed from a clamper even when an impact force is applied in an optical disc apparatus. A displacement amount by which a disc motor is sunk on the bottom case side is suppressed. In more detail, a convex portion which protrudes in the bottom cover direction is provided at a region including the whole or a part of an orthographically-projected surface of the disc motor on a surface of a bottom case opposed to a rear surface of the disc motor, and in a state of recording or reproducing, the sum of a distance between a motor fixing plate and a bottom cover and a distance between the bottom cover and the convex portion of the bottom case is smaller in the rotational axis direction of the disc motor than the sum of a distance between an optical disc and a tray and an insertion depth by which a clamper is inserted into a center hole of an optical disc.03-05-2009
20090064216Optical disc apparatus - In order to make a unit mechanical portion lighter and to cut down the cost of the unit mechanical portion in an optical disc apparatus, the optical disc apparatus of the present invention is configured to include: a chassis which includes a supporting portion that supports an optical pickup, a pickup moving mechanism, and a disc motor, and coupling portions that abut on and are coupled to a tray at plural points, which is formed of a synthetic resin material, and in which the supporting portion and the coupling portions are integrated with each other; and a flexible flat cable which electrically couples between a first circuit substrate fixed to the bottom case side and a second circuit substrate fixed to the tray or the chassis side, and which is arranged between a bottom cover and a bottom case while its plane surface is folded in a state where the tray is inserted into an apparatus body.03-05-2009
20090113462OPTICAL DISC APPARATUS - Disclosed herein is an optical disc apparatus wherein, in order that a flexible printed circuit board that connects a printed circuit board provided on the moving unit of the apparatus which includes a tray to a printed circuit board provided on the fixed unit of the apparatus is prevented from being caught between the bottom case of the apparatus and the bottom cover of the moving unit during the slide-in movement of the tray, convex portions are provided on the inner surface of the top cover that covers the top surface side of the apparatus such that the convex portions are directly opposite or directly above the flexible printed circuit board during the slide-in/slide-out movements of the tray and such that the convex portions are positioned further outwardly from the outer circumference of an optical disc with respect to the rotation center of the optical disc upon completion of the slide-in movement of the tray, and the convex portions guide or slide part of the flexible printed circuit board along the tip end surfaces of the convex portions in the direction of the slide-in movement of the tray when the part of the flexible printed circuit board comes into contact with the inner surface of the top cover during the slide-in movement of the tray.04-30-2009
20100103792OPTICAL DISK DEVICE - Provided is an optical disk device, including a top case and a bottom case which constitute a housing having a substantially box shape in which: the top case includes, on one side thereof, a hook which engages with the bottom case; the bottom case includes an engaging portion which is provided with a cutout which engages with the hook; and a shielding portion for preventing an air flow passing through the cutout is provided in an inside of the cutout.04-29-2010
20100262980OPTICAL DISK DRIVE - The present invention provides an optical disk drive that performs a stable lock operation with a small number of components at the time of the insertion of a tray. The optical disk drive has a locking mechanism which engages the inserted tray with the chassis, a reset arm provided in the tray to return the locking mechanism to the initial state, and an engaging boss that is provided in the chassis and is engaged with the reset arm. The tray has a projecting portion for controlling the engagement position between the reset arm and the engaging boss. The projecting portion comes into contact with a back surface of the engaging boss, to control the engaging amount between the reset arm and the engaging boss to be constant.10-14-2010
20110191793OPTICAL DISC DRIVE - There is provided an optical disc drive comprising: a chassis assembly formed in a box shape, including a chassis; and a tray on which an optical disc is loaded, wherein: the tray is able to move between a close state in the chassis assembly and a open state ejecting form the chassis assembly; the optical disc drive further comprises a flexible wiring member for connecting a first circuit board mounted on the chassis and a second circuit board mounted on the tray; the flexible wiring member includes a thicker reinforced part in a part of the flexible wiring member than in the other part of the flexible wiring member; and the reinforced part has a width which is narrower at an end on the chassis side than the other part of the reinforced part.08-04-2011

Patent applications by Yosuke Ishizuka, Kawasaki JP

Yousuke Ishizuka, Kawasaki JP

Patent application numberDescriptionPublished
20110252436OPTICAL DISC APPARATUS - A printed circuit board (PCB) is attached on a surface of a tray that is opposed to a chassis main or a bottom plate of a housing. On the tray and in a vicinity of a position where the PCB is disposed, a first protruding portion is formed to protrude toward the chassis main, on which a second protruding portion is formed at a position to be opposed to the first protruding portion. Between the first protruding portion and the second protruding portion is a clearance while the tray is accommodated in the housing. When the tray deforms, the second protruding portion supports the first protruding portion to prevent further deformation of the tray.10-13-2011