Patents by Inventor Tadanobu Toba

Tadanobu Toba 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).

  • Patent number: 10339242
    Abstract: Provided is a technology capable of reducing the number of resources necessary for logic implementation in a control device. A semiconductor LSI design device generates a combinational circuit configured with functional blocks defined by a functional block library from an application specification, allocates an operation order of each functional block in the combinational circuit under a condition for starting an operation of a functional block connected to an input pin after ending the operation, converts into a sequence circuit which uses the functional block twice or more in a time division manner, extracts the operation order at a time of execution of the sequential circuit, and determines whether the operation order allocated to the combinational circuit coincide with the extracted operation execution order.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: July 2, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Takumi Uezono, Tadanobu Toba, Yusuke Kanno, Masahiro Shiraishi, Hideo Harada, Satoshi Nishikawa, Toru Motoya
  • Patent number: 10095570
    Abstract: The present invention aims to provide a programmable device with a configuration memory that can hold the state of the occurrence abnormal situation that is difficult to assume such as a failure occurring in the programmable device due to the terrestrial radiation of the configuration memory, even during power off, in order to improve the reproducibility in device testing based on the held error information. The programmable device with the configuration memory includes: an error detection section for detecting an error in the configuration memory, and outputting the detected error as well as an address in which the error occurred, as error information; and an error information holding section provided with a non-volatile memory to store the output error information.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: October 9, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Tadanobu Toba, Kenichi Shimbo, Yusuke Kanno, Nobuyasu Kanekawa, Kotaro Shimamura, Hiromichi Yamada
  • Publication number: 20180149695
    Abstract: Neutron soft error rate derivation is calculated from data at the low energy neutron radiation. An outline value of an SEU cross-section function corresponding to a given neutron energy value is outputted. This outline value and the low energy neutron spectrum data are used to calculate an error count basic value of errors to occur over time. An error count actual measurement value over time is calculated from an error count during radiation of low energy neutrons and low energy neutron radiation time. The error count basic value and the error count actual measurement are used to calculate a proportionality coefficient of the SEU cross-section function. While holding a natural neutron spectrum, an error rate calculator outputs a neutron flux corresponding to a neutron energy value. The neutron soft error rate is calculated by an integration operation of multiplying the SEU cross-section function with the natural neuron spectrum.
    Type: Application
    Filed: April 6, 2016
    Publication date: May 31, 2018
    Applicant: HITACHI, LTD.
    Inventors: Takumi UEZONO, Tadanobu TOBA, Kenichi SHIMBO, Fumihiko NAGASAKI
  • Publication number: 20180096245
    Abstract: Learning data of a usage environment can be efficiently collected. A recognition apparatus includes: a first neural network configured to receive input of data; a second neural network configured to receive input of the data, the second neural network having a different structure from a structure of the first neural network; a comparison unit configured to compare a first output result of the first neural network and a second output result of the second neural network; and a communication unit configured to wirelessly transmit the data to a host system configured to learn the data when a comparison result between the first output result and the second output result is different by a predetermined standard or more.
    Type: Application
    Filed: March 8, 2017
    Publication date: April 5, 2018
    Applicant: HITACHI, LTD.
    Inventors: Tadanobu Toba, Takumi Uezono, Kenichi Shimbo, Goichi Ono
  • Patent number: 9933475
    Abstract: Provided is a semiconductor inspection circuit which is capable of inspecting connection states of power supply, ground, and signal bumps in a semiconductor package or a printed circuit board equipped with a semiconductor LSI mounted in a product operation state. As a means to solve the problem, a circuit capable of switching a path is provided at an input portion of a driver/receiver, a mechanism capable of transferring an output of a path switching circuit near a receiver circuit to a voltage waveform circuit with an internal variable terminal is provided, and a breakage state of a bump can be observed in the product operation state by observing a DC level at a terminal having a certain DC resistance when a signal bump connection state is observed and receiving a step wave and observing a response waveform thereof when an IO power supply bump connection state is observed.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: April 3, 2018
    Assignee: HITACHI, LTD.
    Inventors: Yutaka Uematsu, Hideki Osaka, Tadanobu Toba, Kenichi Shimbo
  • Publication number: 20170364610
    Abstract: Provided is a technology capable of reducing the number of resources necessary for logic implementation in a control device. A semiconductor LSI design device generates a combinational circuit configured with functional blocks defined by a functional block library from an application specification, allocates an operation order of each functional block in the combinational circuit under a condition for starting an operation of a functional block connected to an input pin after ending the operation, converts into a sequence circuit which uses the functional block twice or more in a time division manner, extracts the operation order at a time of execution of the sequential circuit, and determines whether the operation order allocated to the combinational circuit coincide with the extracted operation execution order.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 21, 2017
    Inventors: Takumi UEZONO, Tadanobu TOBA, Yusuke KANNO, Masahiro SHIRAISHI, Hideo HARADA, Satoshi NISHIKAWA, Toru MOTOYA
  • Publication number: 20170357567
    Abstract: A verification method for an application logic provided with one or more macro logics configured to perform a predetermined operation, a macro operation control unit configured to instruct the one or more macro logics to start the operation to cause the one or more macro logics to perform the operation, and an operation data storage area configured to store data. In the application logic, static verification by property description of a formal verification language is performed for each of the one or more macro logic, the macro operation control unit, and the operation data storage area, and dynamic verification by simulation is further performed for at least one of the one or more macro logics.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 14, 2017
    Applicant: HITACHI, LTD.
    Inventors: Toru MOTOYA, Masahiro SHIRAISHI, Satoshi NISHIKAWA, Keisuke YAMAMOTO, Tadanobu TOBA, Takumi UEZONO, Hideo HARADA, Yusuke KANNO
  • Publication number: 20170350933
    Abstract: Provided is a semiconductor inspection circuit which is capable of inspecting connection states of power supply, ground, and signal bumps in a semiconductor package or a printed circuit board equipped with a semiconductor LSI mounted in a product operation state. As a means to solve the problem, a circuit capable of switching a path is provided at an input portion of a driver/receiver, a mechanism capable of transferring an output of a path switching circuit near a receiver circuit to a voltage waveform circuit with an internal variable terminal is provided, and a breakage state of a bump can be observed in the product operation state by observing a DC level at a terminal having a certain DC resistance when a signal bump connection state is observed and receiving a step wave and observing a response waveform thereof when an IO power supply bump connection state is observed.
    Type: Application
    Filed: April 24, 2015
    Publication date: December 7, 2017
    Inventors: Yutaka UEMATSU, Hideki OSAKA, Tadanobu TOBA, Kenichi SHIMBO
  • Publication number: 20170249760
    Abstract: The present invention includes a drawing data generating unit, a variation pattern that varies at regular intervals to be displayed, a display unit that displays drawing data, and a comparator that compares whether input signals are coincident, and the drawing data generating unit includes a receiver that receives data from a higher-level device, a drawing control unit that converts the data received from the higher-level device to drawing data, and a drawing memory that stores the drawing data. The drawing data generating unit and the variation pattern are redundantly configured, and the variation pattern is input to the drawing data generating unit. One output signal of the drawing data generating unit regarding drawing data including the variation pattern is transmitted to the display unit, a plurality of output signals from the drawing data generating unit are input to the comparator, and the comparator outputs a comparison result as a detection signal outside.
    Type: Application
    Filed: December 6, 2016
    Publication date: August 31, 2017
    Inventors: Tadanobu TOBA, Takumi UEZONO, Yusuke KANNO, Masahiro SHIRAISHI, Hideo HARADA, Satoru AKASAKA
  • Patent number: 9735784
    Abstract: An object of the present invention is to provide a high reliable/high safe programmable logic device with high error resistance. The present invention provides a programmable logic device that has a plurality of configuration memories. The configuration memories are divided into a plurality of areas and are arranged and a part of the plurality of areas is set to a high reliable area where reliability of the configuration memory is higher than in the other area.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: August 15, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Yusuke Kanno, Nobuyasu Kanekawa, Kotaro Shimamura, Tadanobu Toba, Teppei Hirotsu, Tsutomu Yamada
  • Patent number: 9645871
    Abstract: For a soft error of an electronic device, a technique capable of ensuring high reliability because of a low soft error rate (SER) is provided. By using building data including information of a structural object of a building and facility data including information of a plurality of facilities including an electronic device arranged in the building, a SER calculating device calculates a model including an attenuation index value representing a degree of attenuation of radiation entering the building attenuated by the structural object of the building until the radiation reaches a position of the facility arranged in the building, calculates a SER at each position of the facility arranged in the building by using the model including the attenuation index value, and outputs information including the SER at each position of the facility.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: May 9, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Shimbo, Tadanobu Toba, Takumi Uezono
  • Patent number: 9507895
    Abstract: A simulation apparatus includes a discrete events simulation section to perform a discrete type simulation of components of a configured model as defined based on attribute information that is information on parts of the components of the defined configured model and connection information showing a connectional relationship among the components of the defined configured model; and a soft error rate computation processing section to compute a soft error rate of the defined configured model based on the simulation result of the discrete events simulation section and data on soft error rates in the attribute information.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: November 29, 2016
    Assignee: HITACHI, LTD.
    Inventors: Tadanobu Toba, Kenichi Shimbo, Hidefumi Ibe, Hideki Osaka
  • Publication number: 20160335145
    Abstract: The present invention aims to provide a programmable device with a configuration memory that can hold the state of the occurrence abnormal situation that is difficult to assume such as a failure occurring in the programmable device due to the terrestrial radiation of the configuration memory, even during power off, in order to improve the reproducibility in device testing based on the held error information. The programmable device with the configuration memory includes: an error detection section for detecting an error in the configuration memory, and outputting the detected error as well as an address in which the error occurred, as error information; and an error information holding section provided with a non-volatile memory to store the output error information.
    Type: Application
    Filed: January 24, 2014
    Publication date: November 17, 2016
    Inventors: Tadanobu TOBA, Kenichi SHIMBO, Yusuke KANNO, Nobuyasu KANEKAWA, Kotara SHIMAMURA, Hiromichi YAMADA
  • Patent number: 9489324
    Abstract: Provided is a data processing device with which, when a temporary network congestion occurs, it is possible to avoid a buffer overflow and sustain a process. When a request for retransmission of the same data with respect to a processor element from a buffer occurs continuously a prescribed number of iterations, a data processing device according to the present invention determines that it is possible that a buffer overflow occurs, and suppresses an increase in the volume of data which is accumulated in the buffer (see FIG. 1).
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: November 8, 2016
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Yuichi Sakurai, Tadanobu Toba, Ken Iizumi, Katsunori Hirano, Hideki Osaka
  • Publication number: 20160241247
    Abstract: An object of the present invention is to provide a high reliable/high safe programmable logic device with high error resistance. The present invention provides a programmable logic device that has a plurality of configuration memories. The configuration memories are divided into a plurality of areas and are arranged and a part of the plurality of areas is set to a high reliable area where reliability for a failure of the configuration memory is higher than reliability in the other area.
    Type: Application
    Filed: September 30, 2013
    Publication date: August 18, 2016
    Inventors: Yusuke KANNO, Nobuyasu KANEKAWA, Kotaro SHIMAMURA, Tadanobu TOBA, Teppei HIROTSU, Tsutomu YAMADA
  • Publication number: 20160085605
    Abstract: For a soft error of an electronic device, a technique capable of ensuring high reliability because of a low soft error rate (SER) is provided. By using building data including information of a structural object of a building and facility data including information of a plurality of facilities including an electronic device arranged in the building, a SER calculating device calculates a model including an attenuation index value representing a degree of attenuation of radiation entering the building attenuated by the structural object of the building until the radiation reaches a position of the facility arranged in the building, calculates a SER at each position of the facility arranged in the building by using the model including the attenuation index value, and outputs information including the SER at each position of the facility.
    Type: Application
    Filed: May 24, 2013
    Publication date: March 24, 2016
    Inventors: Kenichi SHIMBO, Tadanobu TOBA, Takumi UEZONO
  • Publication number: 20140372656
    Abstract: Provided is a data processing device with which, when a temporary network congestion occurs, it is possible to avoid a buffer overflow and sustain a process. When a request for retransmission of the same data with respect to a processor element from a buffer occurs continuously a prescribed number of iterations, a data processing device according to the present invention determines that it is possible that a buffer overflow occurs, and suppresses an increase in the volume of data which is accumulated in the buffer (see FIG. 1).
    Type: Application
    Filed: November 1, 2012
    Publication date: December 18, 2014
    Inventors: Yuichi Sakurai, Tadanobu Toba, Ken Iizumi, Katsunori Hirano, Hideki Osaka
  • Patent number: 8904233
    Abstract: A failure caused by a soft-error including MNU, of an electronic apparatus is prevented, while suppressing increase of a mounting area, power consumption, and processing time. The electronic apparatus stores data indicating the state of a flip-flop included in a sequential logic circuit within an arithmetic unit, each time when execution is performed on a check point provided for every predetermined number of instructions. When a symptom of a soft-error is detected, the apparatus sets the state of the flip-flop included in the sequential logic circuit within the arithmetic unit, based on the data stored after execution of the instruction at the immediately preceding check point, and restarts execution from the next instruction, being subsequent to the instruction associated with the immediately preceding check point.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: December 2, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Hidefumi Ibe, Tadanobu Toba, Kenichi Shimbo, Hitoshi Taniguchi
  • Patent number: 8892967
    Abstract: A logic block group 120 having at least one set including a logic block having at least one logic circuit and a sequential circuit that inputs the output of the logic block is arranged in an irradiation region 110 of a high-energy particle irradiation device, and subjected to irradiation with high-energy particles. A control section 101 calculates the error rate of the logic circuit from the value obtained by subtracting the number of errors of the sequential circuit when the logic block of the logic block group 120 is bypassed, from the number of errors of the sequential circuit and the logic block of the logic block group 120.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: November 18, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Hidefumi Ibe, Tadanobu Toba, Ken-ichi Shimbo, Hitoshi Taniguchi
  • Publication number: 20140164839
    Abstract: In the event of a software error, operations of a programmable device must be suspended while a configuration memory is being rewritten; however, with a system such as a communication device that will be significantly affected if the device is shut down, the system needs to be restored without suspending the operations.
    Type: Application
    Filed: June 25, 2012
    Publication date: June 12, 2014
    Inventors: Tadanobu Toba, Kenichi Shimbo