Patents by Inventor Tomio Sato

Tomio Sato 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: 20160217246
    Abstract: In a test apparatus, a processor determines an area in a circuit area of a semiconductor device indicated by design data, on the basis of attenuation characteristics of a pulse signal caused by electrostatic discharge. The attenuation characteristics of the pulse signal are dependent on a frequency of the pulse signal and a distance from an input point of the pulse signal. The processor extracts a resistor, a capacitor, or an inductor from the determined area, and creates an equivalent circuit of the semiconductor device within the area on the basis of a result of the extraction.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 28, 2016
    Applicant: Socionext Inc.
    Inventor: Tomio SATO
  • Patent number: 8954911
    Abstract: A circuit analysis device includes: a processor configured to execute a procedure by: calculating, for power supply noise included in a power supply voltage supplied to a semiconductor memory device, variation characteristics of an electric potential relative to the power supply voltage in a specific memory cell included in a memory cell array; calculating power supply noise of a power supply system that occurs when a current is supplied to an equivalent circuit of the power supply system under a predetermined condition, the power supply system including a power supply line and an element for supplying a power supply voltage from a voltage source to a semiconductor device; calculating, from the variation characteristics, the electric potential obtained when the power supply noise is equal to a specific magnitude; and determining, by comparing the calculated electric potential with a threshold, whether memory latch-up will occur in the specific memory cell.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: February 10, 2015
    Assignee: Fujitsu Limited
    Inventor: Tomio Sato
  • Publication number: 20140223399
    Abstract: A circuit analysis device includes: a processor configured to execute a procedure by: calculating, for power supply noise included in a power supply voltage supplied to a semiconductor memory device, variation characteristics of an electric potential relative to the power supply voltage in a specific memory cell included in a memory cell array; calculating power supply noise of a power supply system that occurs when a current is supplied to an equivalent circuit of the power supply system under a predetermined condition, the power supply system including a power supply line and an element for supplying a power supply voltage from a voltage source to a semiconductor device; calculating, from the variation characteristics, the electric potential obtained when the power supply noise is equal to a specific magnitude; and determining, by comparing the calculated electric potential with a threshold, whether memory latch-up will occur in the specific memory cell.
    Type: Application
    Filed: December 13, 2013
    Publication date: August 7, 2014
    Applicant: FUJITSU LIMITED
    Inventor: Tomio SATO
  • Publication number: 20130261404
    Abstract: A sleep measurement system including a sleep monitor for measuring biometric data relating to user's sleep, an external terminal for displaying a state of said user's sleep, a first server for storing first data received from said sleep monitor and providing the first data to said external terminal, and a second server for analyzing said user's sleep on the basis of second data received from said sleep monitor and providing an analysis result to said external terminal. The sleep monitor processes the biometric information in each unit interval, sends a processing result of said biometric information in each unit interval to said first server as the first data, and sends said biometric data accumulated during said user's sleep and said processing result of said biometric information in each said unit interval to said second server as said second data.
    Type: Application
    Filed: February 6, 2013
    Publication date: October 3, 2013
    Applicant: Tanita Corporation
    Inventors: Tomio SATO, Takayuki SHIOTA
  • Patent number: 8546978
    Abstract: According to an aspect of an embodiment, an electric circuit device includes: a first and second voltage supply units to be applied with a first and second voltages, respectively; a first capacitor connected to the first voltage supply unit; a first switch connected between the first voltage supplying unit and the first capacitor; a first load circuit connected to the second voltage supply unit; a second switch connected between the second voltage supply unit and the first load circuit; a third switch connected to connect the first capacitor with the first load circuit; and a switch controller for turning on either the third switch or the first switch, and for turning off the third switch while the second switch is turned on.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: October 1, 2013
    Assignee: Fujitsu Limited
    Inventor: Tomio Sato
  • Patent number: 8466694
    Abstract: A biometric measurement apparatus has a measurement unit for measuring bioelectric impedance of different parts of a body and hematocrit. The measurement unit has impedance calculators (IPG1, IPG2) for measuring the impedance of tissues and blood of a living body with a first frequency to output as a first impedance (Z1), and for measuring the impedance of the tissues and blood of the living body with a second frequency to output as a second impedance (Z2), and has pulse wave analyzing units (MS1 and MS2) for analyzing differences of the first impedance between a first time and a second time and difference (?ZH) of the second impedance between the first time and the second time, and a hematocrit calculator (245) for calculating hematocrit based on the difference (?ZL) of the first impedance and the difference (?ZH) of the second impedance.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: June 18, 2013
    Assignee: Tanita Corporation
    Inventors: Tomio Sato, Tadaaki Ishige
  • Patent number: 8415995
    Abstract: An electric circuit includes a first circuit, a second circuit, a synchronization detection circuit, a storage circuit, and a correction circuit. The first clock is configured to operate with a first clock, the second circuit is configured to operate with a second clock which is different in frequency from the first clock, and the synchronization detection circuit is configured to detect synchronization of the first and second clocks. The storage circuit is configured to store an output noise pattern of the second circuit, based on the synchronization detected by the synchronization detection circuit, and the correction circuit is configured to correct an output of the second circuit by using the output noise pattern.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: April 9, 2013
    Assignee: Fujitsu Limited
    Inventor: Tomio Sato
  • Publication number: 20120232413
    Abstract: A biometric apparatus includes an instruction issuing unit configured to issue an instruction to an object person to be measured to execute a predetermined state; a pulse sensor configured to measure a pulse rate in the predetermined state; a consumed energy measuring unit configured to measure a consumed energy in the predetermined state; and a biological data calculating unit configured to define a relational expression of the consumed energy with respect to a predetermined pulse rate of the object person to be measured on the basis of the pulse rate measured by the pulse sensor in the predetermined state and the consumed energy measured by the consumed energy measuring unit at the measured pulse rate, and calculate biological data of the object person to be measured on the basis of the defined relational expression.
    Type: Application
    Filed: February 2, 2012
    Publication date: September 13, 2012
    Inventors: Takayuki SHIOTA, Tomio SATO
  • Patent number: 8060343
    Abstract: Provided is a semiconductor device for outputting only the necessary information from non-periodic noise information to the outside. An analysis object information extracting section specifies analysis object information used to analyze noise associated with a malfunction from the non-periodic noise information having a large amount of information and extracts only the specified analysis object information from the noise information. A communication section outputs the extracted analysis object information to the outside. Thus, the amount of the information can be reduced and the noise information can be outputted by an inexpensive communication section such as a serial communication device.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: November 15, 2011
    Assignee: Fujitsu Limited
    Inventor: Tomio Sato
  • Publication number: 20110204933
    Abstract: An electric circuit includes a first circuit, a second circuit, a synchronization detection circuit, a storage circuit, and a correction circuit. The first clock is configured to operate with a first clock, the second circuit is configured to operate with a second clock which is different in frequency from the first clock, and the synchronization detection circuit is configured to detect synchronization of the first and second clocks. The storage circuit is configured to store an output noise pattern of the second circuit, based on the synchronization detected by the synchronization detection circuit, and the correction circuit is configured to correct an output of the second circuit by using the output noise pattern.
    Type: Application
    Filed: March 11, 2011
    Publication date: August 25, 2011
    Applicant: FUJITSU LIMITED
    Inventor: Tomio Sato
  • Publication number: 20110080181
    Abstract: A biometric measurement apparatus has a measurement unit for measuring bioelectric impedance of different parts of a body and hematocrit. The measurement unit has impedance calculators (IPG1, IPG2) for measuring the impedance of tissues and blood of a living body with a first frequency to output as a first impedance (Z1), and for measuring the impedance of the tissues and blood of the living body with a second frequency to output as a second impedance (Z2), and has pulse wave analyzing units (MS1 and MS2) for analyzing differences of the first impedance between a first time and a second time and difference (?ZH) of the second impedance between the first time and the second time, and a hematocrit calculator (245) for calculating hematocrit based on the difference (?ZL) of the first impedance and the difference (?ZH) of the second impedance.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 7, 2011
    Applicant: Tanita Corporation
    Inventors: Tomio SATO, Tadaaki ISHIGE
  • Patent number: 7830169
    Abstract: There is provided a current amount adjusting section adjusting a current amount flowing through a power supply line supplying power to an internal circuit which includes a circuit operating based on a clock signal and a ratio of consumed charge amounts by the current flowing at a rising edge of the clock signal and by the current flowing at a falling edge of the clock signal so that noise generated in the power supply line may be restrained.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: November 9, 2010
    Assignee: Fujitsu Limited
    Inventor: Tomio Sato
  • Patent number: 7786614
    Abstract: According to an aspect of an embodiment, a semiconductor device includes: a reference line; a first line provided with a first voltage with respect to the reference line; a second line provided with a second voltage not less than the first voltage with respect to the reference line; a capacitor having a first capacitance arranged between the reference line and second line; a current limiting element arranged between the capacitor and the second line, for charging up the capacitor, the current limiting element limiting current flowing into the capacitor from the second line during charging up; a first switch connected between the first line and the capacitor; and a controller for controlling the first switch to discharge the capacitor.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: August 31, 2010
    Assignee: Fujitsu Limited
    Inventor: Tomio Sato
  • Patent number: 7670303
    Abstract: A body motion measuring apparatus is described, embodiments of which include an apparatus for detecting the magnitudes of motions in different directions at a time using body motion sensors, calculating the size V of a composite vector based on the relationship between the magnitudes of the motions, comparing the size V of the composite vector with a reference value to determine whether the size V of the composite vector is adequate, calculating an angle ? based on the relationship between the magnitudes of the motions when V is determined to be adequate, calculating a body motion output M taking the angle ? into account, and counting a predetermined body motion based on the relationship between M and a predetermined elapsed time.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: March 2, 2010
    Assignee: Tanita Corporation
    Inventors: Tomio Sato, Kenji Nishibayashi
  • Publication number: 20100013538
    Abstract: There is provided a current amount adjusting section adjusting a current amount flowing through a power supply line supplying power to an internal circuit which includes a circuit operating based on a clock signal and a ratio of consumed charge amounts by the current flowing at a rising edge of the clock signal and by the current flowing at a falling edge of the clock signal so that noise generated in the power supply line may be restrained.
    Type: Application
    Filed: September 25, 2009
    Publication date: January 21, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Tomio SATO
  • Publication number: 20090206673
    Abstract: According to an aspect of an embodiment, an electric circuit device includes: a first and second voltage supply units to be applied with a first and second voltages, respectively; a first capacitor connected to the first voltage supply unit; a first switch connected between the first voltage supplying unit and the first capacitor; a first load circuit connected to the second voltage supply unit; a second switch connected between the second voltage supply unit and the first load circuit; a third switch connected to connect the first capacitor with the first load circuit; and a switch controller for turning on either the third switch or the first switch, and for turning off the third switch while the second switch is turned on.
    Type: Application
    Filed: February 11, 2009
    Publication date: August 20, 2009
    Applicant: FUJITSU LIMITED
    Inventor: Tomio SATO
  • Patent number: 7560999
    Abstract: An oscillation circuit, including: a complementary metal oxide semiconductor (CMOS) inverter coupled between a first potential and a second potential; a first element unit whose one terminal is coupled to an input terminal of the CMOS inverter; a second element unit whose one terminal is coupled to the input terminal of the CMOS inverter and whose other terminal is coupled to an output terminal of the CMOS inverter; a third element unit whose one terminal is coupled to the output terminal of the CMOS inverter; and a fourth element unit whose one terminal is coupled to the other terminal of the first element unit and to the other terminal of the third element unit, and whose other terminal is coupled to either the first potential or the second potential; in that: the first, second, third, and fourth element units are any of a quartz crystal resonator, a resistor, an inductor, and a capacitor; the oscillation circuit oscillating at a frequency determined by the first, second, and third element units.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: July 14, 2009
    Assignee: Epson Toyocom Corporation
    Inventor: Tomio Sato
  • Publication number: 20090058514
    Abstract: According to an aspect of an embodiment, a semiconductor device includes: a reference line; a first line provided with a first voltage with respect to the reference line; a second line provided with a second voltage not less than the first voltage with respect to the reference line; a capacitor having a first capacitance arranged between the reference line and second line; a current limiting element arranged between the capacitor and the second line, for charging up the capacitor, the current limiting element limiting current flowing into the capacitor from the second line during charging up; a first switch connected between the first line and the capacitor; and a controller for controlling the first switch to discharge the capacitor.
    Type: Application
    Filed: August 27, 2008
    Publication date: March 5, 2009
    Applicant: FUJITSU LIMITED
    Inventor: Tomio SATO
  • Publication number: 20080306697
    Abstract: Provided is a semiconductor device for outputting only the necessary information from non-periodic noise information to the outside. An analysis object information extracting section specifies analysis object information used to analyze noise associated with a malfunction from the non-periodic noise information having a large amount of information and extracts only the specified analysis object information from the noise information. A communication section outputs the extracted analysis object information to the outside. Thus, the amount of the information can be reduced and the noise information can be outputted by an inexpensive communication section such as a serial communication device.
    Type: Application
    Filed: July 24, 2008
    Publication date: December 11, 2008
    Applicant: FUJITSU LIMITED
    Inventor: Tomio SATO
  • Publication number: 20080058610
    Abstract: There is provided a body composition indicator estimation system which hardly imposes a burden, such as purchase of another system or re-registration of the same input data, on a user in using the system.
    Type: Application
    Filed: June 28, 2007
    Publication date: March 6, 2008
    Inventors: Tomio Sato, Hiroki Hasegawa, Masanori Ikeda