Patents by Inventor Tsutomu Yamada
Tsutomu Yamada 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: 20140098706Abstract: Communication control equipment is connected to a plurality of communication control equipment via a network and is configured to be time-synchronized with the plurality of communication control equipment by using a time synchronization procedure using a communication including at least request packets and acknowledgement packets. The communication control equipment includes a receiving-interval measurement section configured to measure a receiving interval of request packets from the plurality of communication control equipment; and a queuing-occurrence determination section configured to detect conflict of the request packets from any of the plurality of communication control equipment on a basis of the receiving interval of the request packets measured by the receiving-interval measurement section.Type: ApplicationFiled: October 3, 2013Publication date: April 10, 2014Applicant: Hitachi, Ltd.Inventors: Tatsuya MARUYAMA, Tsutomu YAMADA, Mitsuyasu KIDO, Shoji YOSHIDA
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Patent number: 8693481Abstract: A communication device reduces a processing time required at the time of mutually converting different wireless or wired communication protocol and improves a real-time property. The communication device includes two or more communication units which communicate with two or more external devices and a communication controller which processes communication data. The communication controller has table information that associates a communication path, a type of the communication unit, and conversion-info, and an input and output unit that inputs and outputs the table information. According to the added conversion-info, a conversion unit sequentially performs various conversion processes (protocol conversion, routing, communication quality evaluation, fragmentation/integration of communication interface, fragment/defragment process, frame multiplication/integration, and frequency setting).Type: GrantFiled: August 15, 2011Date of Patent: April 8, 2014Assignee: Hitachi, Ltd.Inventors: Noritaka Matsumoto, Tsutomu Yamada, Kazuya Shimoyama, Yoshihito Sato
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Publication number: 20140082427Abstract: To have a problem of occurrence of the same failure in failure detection of a microcontroller. A microcontroller has a CPU and a data access control circuit. The data access control circuit performs two types of accesses: an individual access in which a data access of the CPU is performed for each thread, and a shared access in which a data access of the CPU is performed by executing two threads. The data access control circuit detects a failure of the CPU by making a comparison between the command and the address, respectively, in the shared access generated by executing the two threads.Type: ApplicationFiled: September 20, 2013Publication date: March 20, 2014Applicant: Renesas Electrics CorporationInventors: Hiromichi Yamada, Tsutomu Yamada, Nobuyasu Kanekawa, Kesami Hagiwara, Yuichi Ishiguro, Takashi Yasumasu, Kazuyoshi Fukuda, Yoshiyuki Nakada
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Patent number: 8671300Abstract: A processing unit is connected to another processing unit through a system bus composed of serial signal communication line and synchronization signal communication line to be able to communicate therewith. When an operation unit detects abnormal state in the processing unit, the operation unit supplies notification of detection of the abnormal state to synchronization unit. The synchronization unit transmits the received detection notification of abnormal state to the other processing unit through the synchronization signal communication line. Conversion unit receives parallel communication data from the operation unit through important signal line instead of general signal line and converts the received parallel signal into serial signal to be transmitted to the other processing unit through the serial signal communication line, thereby soundness among processing units connected to the system bus is ensured when the system bus is configured to attain serial communication.Type: GrantFiled: November 3, 2010Date of Patent: March 11, 2014Assignee: Hitachi, Ltd.Inventors: Noritaka Matsumoto, Tsutomu Yamada, Eiji Kobayashi, Akihiro Ohashi, Shin Kokura
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Patent number: 8649730Abstract: A wireless communication system includes a wireless communication apparatus (fixed terminal) resided in a fixed station side providing a wireless antenna, a wireless communication unit, a server processing unit, a task list, a data communication unit, a buffer management unit and a buffer, and a wireless data transport apparatus (mobile terminal) resided in a mobile station side providing the wireless antenna, the wireless communication unit, a server determination unit, a task list I/O unit, the task list, a client processing unit and the buffer, thereby, the mobile terminal receives the task list from the fixed terminal to communicate data with another fixed terminal and transports not only the data but also a data acknowledgement, and the fixed terminal creates the acknowledgement to use the acknowledgement to thereby control a creation and deletion of bulk data appropriately.Type: GrantFiled: December 22, 2010Date of Patent: February 11, 2014Assignee: Hitachi, Ltd.Inventors: Tsutomu Yamada, Yoshihito Sato, Hideaki Suzuki, Shoji Suzuki, Tatsuya Maruyama, Junsuke Fujiwara
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Publication number: 20140018084Abstract: Wireless basestations antenna placement, determining an indoor placement enabling utilization of a radio wave coming from the outside. A space in a construction is divided into regions where communication using a foreign wave can and cannot be performed, and an antenna installation position to ensure communication quality in the region where the communication cannot be performed, is determined. Included are: a request condition input unit specifying a required communication performance for where the wireless basestation antenna is to be installed, a basestation antenna placement unit determining a basestation antenna placement position, and a foreign wave use condition determination unit dividing the construction into regions where the required communication performance is and is not satisfied by the foreign wave.Type: ApplicationFiled: June 28, 2013Publication date: January 16, 2014Applicant: Hitachi, Ltd.Inventors: Yoshihito SATO, Tsutomu YAMADA, Kenjiro TAKATANI
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Patent number: 8603611Abstract: The present invention provides a transparent planar body and a transparent touch switch that can improve visibility. Specifically, the transparent planar body (1) has a patterned transparent conductive film (12) on at least one surface of a transparent substrate (11). This transparent planar body (1) comprises a transmittance-adjusting layer for equalizing the transmission spectrum of light transmitted through a patterned region wherein the transparent conductive film (12) is provided via the transparent substrate (11) with that transmitted through a non-patterned region wherein the transparent conductive film (12) is not provided via the transparent substrate (11).Type: GrantFiled: May 24, 2006Date of Patent: December 10, 2013Assignee: Gunze LimitedInventors: Naohiro Wakabayashi, Tsutomu Yamada, Kuniaki Sasaki, Shuji Furukawa, Keiji Tsukamoto
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Publication number: 20130254592Abstract: The present invention provides a semiconductor integrated circuit device realizing improved detection of a failure while suppressing deterioration in performance. In a semiconductor integrated circuit device executing a plurality of threads while switching them synchronously with clocks, registers used for executing the threads are provided for the respective threads. Programs independent of each other and the same program as the threads are executed while being switched. In the case of executing the same program by a plurality of threads, a comparison circuit for comparing results of execution using registers provided in correspondence with the threads is provided.Type: ApplicationFiled: March 12, 2013Publication date: September 26, 2013Applicant: Renesas Electronics CorporationInventors: Hiromichi YAMADA, Nobuyasu Kanekawa, Tsutomu Yamada, Kesami Hagiwara
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Publication number: 20130194276Abstract: In the construction of a wireless network in a building, structure conditions such as the floor plan of the building and the shape of the floor, material conditions such as materials for structures, and the like have a great effect on radio wave propagation characteristics. This causes a problem that unless these pieces of information are taken into consideration, an accurate layout design of wireless base stations cannot be made. In the construction of a new wireless network in a building, a wireless network similar to structure conditions of a newly constructed building is extracted from structure conditions of past buildings in which a wireless network is constructed. The layout positions of wireless base stations used in the extracted wireless network are regarded as the layout positions of wireless base stations in the new wireless network.Type: ApplicationFiled: July 11, 2012Publication date: August 1, 2013Inventors: Yoshihito Sato, Tsutomu Yamada
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Publication number: 20130121238Abstract: A multistage relay communication system 100 includes a trunk network 1 and branch networks 2 (2a, 2b), each of which includes one or more communication apparatuses 4. The communication apparatus 4 can switch between a trunk mode to operate in the trunk network 1 and a branch mode to operate in the branch network 2. In the trunk network 1, the communication apparatus 4 carries out fixing of a communication path and redundancy of data based on a path table in order to achieve real-timeness and a data arrival rate. Meanwhile, in the branch network 2, when a communication failure occurs, the communication apparatus 4 autonomously searches for a communication path and constructs a path table, in order to at least secure a data arrival rate even if real-timeness is impaired within an allowable range.Type: ApplicationFiled: June 11, 2010Publication date: May 16, 2013Applicant: HITACHI, LTD.Inventors: Tsutomu Yamada, Noritaka Matsumoto, Kazuya Shimoyama, Yoshihito Sato, May Takada, Masayuki Miyazaki
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Patent number: 8423741Abstract: A storage medium management part includes a stored data amount adjustment part that: stores a maximum data amount which the storage medium can store at the time of startup of a storage control device, and a stored data amount which is an initial stored amount, in a data amount storage part; upon receiving a write amount of a data in response to a write request, writes a new stored data amount calculated by adding the write amount to the already stored data amount, over the already stored data amount; calculates a free space by subtracting the stored data amount from the maximum data amount; determines a deletion amount of the data if the free space does not takes a value not less than a prescribed value; and writes a newly-calculated stored data amount calculated by subtracting the deletion amount from the stored data amount, over the stored data amount.Type: GrantFiled: July 27, 2011Date of Patent: April 16, 2013Assignee: Hitachi, Ltd.Inventors: Masaya Suehiro, Tatsuya Maruyama, Tsutomu Yamada, Hideaki Suzuki
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Publication number: 20130085274Abstract: A process for the production of a carbodiimide, comprising the steps of: (1) reacting an amine represented by the following formula (A) with carbon disulfide in the presence of a catalyst at a reaction temperature of 50 to 150° C. to obtain a thiourea represented by the following formula (B): (In the above formula (A), R is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.) (In the above formula (B), R is as defined in the above formula (A).; (2) desulfurizing the obtained thiourea with a hypochlorite in the presence of a basic compound to obtain a carbodiimide represented by the following formula (C): (In the above formula (C), R is as defined in the above formula (A).); and (3) purifying the obtained carbodiimide.Type: ApplicationFiled: June 15, 2011Publication date: April 4, 2013Applicants: TEIJIN LIMITED, KAWAGUCHI CHEMICAL INDUSTRY CO., LTD.Inventors: Kenji Suzuki, Tsukasa Kato, Tsutomu Yamada, Yuya Kamada, Shinichiro Shoji
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Publication number: 20130069331Abstract: A track structure is provided with a bearing containing chamber having a pivotable attachment section composed of a recess which is formed in one of a support base or a rockable section and is open to the other; an operation section formed on the other of the support base or the rockable section and rotatably fitted in the bearing containing chamber; a pivot shaft section for rotatably supporting the operation section within the bearing containing chamber; and elastic blocks arranged in plural within the bearing containing chamber at equal intervals about the axis of the pivot shaft section, the elastic blocks holding the operation section at the neutral position and, when the operation section pivots to right and left, biasing the operation section in a direction in which the operation section returns to the neutral position.Type: ApplicationFiled: April 15, 2010Publication date: March 21, 2013Applicant: SURPATH TRADING CO., LTD.Inventor: Tsutomu Yamada
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Publication number: 20130057245Abstract: A current regulator has a current regulating semiconductor device and a microcontroller which outputs a PWM pulse for driving a load to the current regulating semiconductor device and receives outputs of a high-side current detection circuit and a low-side current detection circuit from the current regulating semiconductor device. An output mixer of the current regulating semiconductor device switches, in synchronization with the PWM pulse, between the output of the high-side current detection circuit and the output of the low-side current detection circuit on one signal line to output the output to the microcontroller.Type: ApplicationFiled: July 25, 2012Publication date: March 7, 2013Applicant: Hitachi Automotive Systems, Ltd.Inventors: Teppei HIROTSU, Nobuyasu Kanekawa, Ryosuke Ishida, Tsutomu Yamada, Chihiro Sato
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Patent number: 8302081Abstract: The invention contemplates to improve versatility or flexibility of a system for managing a controller. In a data format converter, a computer constitutes reception unit for acquiring input information containing a program, etc, of a first data format and outputted from a programmer unit, direction extract unit for extracting a convert direction of a data format contained in the input information so acquired, data conversion rule acquisition unit for acquiring a conversion rule of a data format corresponding to the convert direction so extracted and convert execution means for converting the program, etc, of the first data format to a second data format. The program, etc, of the second data format converted is outputted to the controller. The program, etc, can be created in this way in an arbitrary data format different from the data format of the controller.Type: GrantFiled: June 10, 2009Date of Patent: October 30, 2012Assignee: Hitachi, Ltd.Inventors: Tsutomu Yamada, Masahiko Saito, Shoji Suzuki, Hiromichi Endoh, Noritaka Matsumoto, Hirokazu Kasashima, Manabu Yamauchi
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Patent number: 8161362Abstract: Processed results are received when processors make compatible computations on data of a common object. A computation command signal is generated and fed to the processors in response to a start signal from any one of the processors so that the processors can make computations with different operation timings. Then, the results of the computations made by the processors are compared with each other. Thus, apparatus capable of small size, high performance and safety at the same time can be achieved by the above construction using the processors.Type: GrantFiled: June 7, 2006Date of Patent: April 17, 2012Assignees: Hitachi, Ltd., Hitachi Information & Control Solutions, Ltd.Inventors: Akira Bando, Shin Kokura, Takashi Umehara, Masamitsu Kobayashi, Hisao Nagayama, Naoya Mashiko, Masakazu Ishikawa, Masahiro Shiraishi, Akihiro Onozuka, Hiromichi Endoh, Tsutomu Yamada, Satoru Funaki
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Publication number: 20120057479Abstract: A communication control unit and a communication control system are provided in which control devices can synchronously operate. In a communication control system in which a communication control unit and multiple control devices having an actuator to operate a control target are connected via a network, the communication control unit provides a control command to the control devices, synchronizes times of the communication control unit and the control devices, obtains communication delays relative to the control devices, collects control start times of the control devices, obtains a time by subtracting the control start time from a predetermined time as a start time of the control device, calculates a time obtained by subtracting the communication delay from the start time for each control device, and transmits the control command to the control devices before the earliest time of the calculated times.Type: ApplicationFiled: August 19, 2011Publication date: March 8, 2012Inventors: Tatsuya MARUYAMA, Tsutomu Yamada, Shinji Yonemoto, Takashi Iwaki, Hironori Ohashi, Yutaka Matsumoto
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Publication number: 20120044954Abstract: A communication device reduces a processing time required at the time of mutually converting different wireless or wired communication protocol and improves a real-time property. The communication device includes two or more communication units which communicate with two or more external devices and a communication controller which processes communication data. The communication controller has table information that associates a communication path, a type of the communication unit, and conversion-info, and an input and output unit that inputs and outputs the table information. According to the added conversion-info, a conversion unit sequentially performs various conversion processes (protocol conversion, routing, communication quality evaluation, fragmentation/integration of communication interface, fragment/defragment process, frame multiplication/integration, and frequency setting).Type: ApplicationFiled: August 15, 2011Publication date: February 23, 2012Inventors: Noritaka MATSUMOTO, Tsutomu Yamada, Kazuya Shimoyama, Yoshihito Sato
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Publication number: 20120030444Abstract: A storage medium management part includes a stored data amount adjustment part that: stores a maximum data amount which the storage medium can store at the time of startup of a storage control device, and a stored data amount which is an initial stored amount, in a data amount storage part; upon receiving a write amount of a data in response to a write request, writes a new stored data amount calculated by adding the write amount to the already stored data amount, over the already stored data amount; calculates a free space by subtracting the stored data amount from the maximum data amount; determines a deletion amount of the data if the free space does not takes a value not less than a prescribed value; and writes a newly-calculated stored data amount calculated by subtracting the deletion amount from the stored data amount, over the stored data amount.Type: ApplicationFiled: July 27, 2011Publication date: February 2, 2012Inventors: Masaya Suehiro, Tatsuya Maruyama, Tsutomu Yamada, Hideaki Suzuki
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Publication number: 20110302393Abstract: When executing sequential processing such as a ladder logic, converting a program formed of an instruction set of another processor to a program executable by an own processor in software and then conducting processing lowers the real time property. In a control system, a storage unit stores a program for the own processor and a program for another processor. A processor reads data from the storage unit, executes processing described as a program, and gives an instruction to change over a method for acquiring data from the storage unit, to a conversion instruction unit according to data contents. A changeover unit is connected to the storage unit directly or via the conversion unit to change over the data acquiring method according to an instruction from the conversion instruction unit. The conversion unit converts data read from the storage unit to data executable by the processor, according to a conversion scheme.Type: ApplicationFiled: June 6, 2011Publication date: December 8, 2011Inventors: Noritaka Matsumoto, Tsutomu Yamada, Akihiro Ohashi, Shin Kokura