Patents by Inventor Tetsuji Tamura

Tetsuji Tamura 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: 20080100328
    Abstract: In one embodiment, a test system tests a device under test (DUT). The DUT includes an internal test controller that executes built-in self-test (BIST programs. Built-in self-test programs include array-based automatic built-in self-test programs, discrete and combinational logic built-in self-test programs, and functional architecture verification programs (AVPs). An external manufacturing system test controller manages the internal test controller within the DUT and determines minimum operating voltage levels for a power supply input voltage that supplies the DUT. A logic simulator provides a modeling capability to further enhance the development of minimum voltage power supply input operational values for the DUT.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Applicant: IBM Corporation
    Inventors: Sang H. Dhong, Brian Flachs, Gilles Gervais, Charles R. Johns, Brad W. Michael, Makoto Aikawa, Iwao Takiguchi, Tetsuji Tamura
  • Publication number: 20080043807
    Abstract: A temperature sensor measures a temperature of a certain location inside a processor. An overall heat amount measurement unit measures the overall amount of heat of the processor. A temperature estimation unit estimates the temperatures of a plurality of hot spots occurring in the processor based on the temperature of the certain location detected by the temperature sensor, and determines the maximum temperature of the processor. The temperature estimation unit switches between maximum load temperature estimation coefficients and individual load temperature estimation coefficients stored in a storing unit for reference, depending on the overall amount of heat of the processor, and applies them to a temperature estimation function(s) for converting the sensor temperature into the temperatures of the hot spots.
    Type: Application
    Filed: April 26, 2005
    Publication date: February 21, 2008
    Applicant: Sony Computer Entertainment Inc.
    Inventors: Kazuaki Yazawa, Iwao Takiguchi, Atsuhiko Imai, Tetsuji Tamura, Kenichi Adachi
  • Publication number: 20080017367
    Abstract: A heat control apparatus for a circuit includes: a heat detecting unit which acquires the heat generation condition of a semiconductor integrated circuit from an inspection image obtained by capturing an image of the semiconductor integrated circuit by an image capturing sensor; and a cooling control unit which controls a cooling means for cooling the semiconductor integrated circuit in accordance with the acquired heat generation condition.
    Type: Application
    Filed: March 17, 2005
    Publication date: January 24, 2008
    Applicant: Sony Computer Entertainment Inc.
    Inventors: Kazuaki Yazawa, Tetsuji Tamura
  • Publication number: 20070300082
    Abstract: A technology for supplying a power supply voltage to a microprocessor. Before normal arithmetic processing of the microprocessor, duty cycle correction process for adjusting the duty cycle of a clock signal inside the microprocessor is performed. In the duty cycle correction process for adjusting the duty cycle, the duty cycle of the clock signal is adjusted so as to minimize the power voltage at which the microprocessor is still operable.
    Type: Application
    Filed: June 21, 2006
    Publication date: December 27, 2007
    Applicants: Sony Computer Entertainment Inc., International Business Machines Corporation, Toshiba America Electronic Components, Inc.
    Inventors: Yosuke Muraki, Tetsuji Tamura, Iwao Takiguchi, Makoto Aikawa, Eskinder Hailu, Byron Lee Krauter, Stephen Douglas Weitzel, Jieming Qi, Kazuhiko Miki, David William Boerstler, Gilles Gervais, Kirk David Peterson, Robert Walter Berry, Sang Hoo Dhong
  • Publication number: 20070198134
    Abstract: An instruction decoder identifies, for each instruction, an operational block involved in the execution of the instruction and an associated heat release coefficient. The instruction decoder stores identified information in a heat release coefficient profile. An instruction scheduler schedules the instructions in accordance with the dependence of the instructions on data. A heat release frequency adder cumulatively adds the heat release coefficient to the heat release frequency of the operational block held in the operational block heat release frequency register as the execution of the scheduled instructions proceeds. A heat release frequency subtractor subtracts from the heat release frequency of the operational blocks in the operational block heat release frequency register in accordance with heat discharge that occurs with time.
    Type: Application
    Filed: December 22, 2004
    Publication date: August 23, 2007
    Applicant: Sony Computer Enterainment Inc.
    Inventors: Kenichi Adachi, Kazuaki Yazawa, Iwao Takiguchi, Atsuhiko Imai, Tetsuji Tamura
  • Publication number: 20070143763
    Abstract: A heat generation amount estimation unit acquires the number of sub processors currently in operation, acquires the current operating frequency, and estimates the amount of heat generation after a period ?t. A temperature control unit estimates the temperature after the period ?t based on the current temperature input from a temperature sensor and the amount of heat generation estimated, and compares it with a predetermined threshold temperature. If the predetermined threshold temperature is reached, the temperature control unit acquires the number of sub processors available in parallel after the period ?t from a task management unit, and consults a performance table to determine which operation point to shift to. A sub processor control unit and a frequency control unit switch to the number of sub processors in operation and the operating frequency accordingly. The performance table lists possible operation points in order of performance.
    Type: Application
    Filed: April 8, 2005
    Publication date: June 21, 2007
    Applicant: SONY COMPUTER ENTERTAINMENT INC.
    Inventors: Kenichi Adachi, Kazuaki Yazawa, Iwao Takiguchi, Atsuhiko Imai, Tetsuji Tamura
  • Publication number: 20070074216
    Abstract: This task management method includes dividing a unit time of processing into a reserved band for guaranteeing real-timeness and a non-reserved band not for guaranteeing real-timeness, and skipping a task to be executed in the non-reserved band as appropriate when processor throughput falls. That is, when the operating frequency of the processor is lowered in order to suppress heat generation, the real-timeness of tasks to be executed in the reserved band is guaranteed at the expense of processing the task to be executed in the non-reserved band in a best-efforts fashion.
    Type: Application
    Filed: April 8, 2005
    Publication date: March 29, 2007
    Applicant: Sony Computer Entertainment Inc.
    Inventors: Kenichi Adachi, Kazuaki Yazawa, Iwao Takiguchi, Atsuhiko Imai, Tetsuji Tamura
  • Patent number: 7167778
    Abstract: A temperature predicting unit predicts the temperature of an electronic device after a predetermined period, and the speed of temperature variation from the operating state of the load. Based on the results of prediction by the temperature predicting unit, a selection unit instructs either one or both of a nozzle control unit and an electric fan control unit to exercise control. According to a control signal from the selection unit, the nozzle control unit transmits a control signal to a nozzle unit to drive a jet cooling apparatus. According to a control signal from the selection unit, the electric fan control unit transmits a control signal to an electric fan unit to drive an electric fan. The selection unit selects the electric fan when the predicted speed of temperature variation exceeds a predetermined threshold, and selects the jet cooling apparatus when the predetermined thresholds is not exceeded.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: January 23, 2007
    Assignee: Sony Computer Entertainment Inc.
    Inventors: Kazuaki Yazawa, Iwao Takiguchi, Tetsuji Tamura, Atsuhiko Imai, Kenichi Adachi
  • Publication number: 20060289862
    Abstract: Systems and methods for positioning thermal sensors within an integrated circuit in a manner that provides useful thermal measurements corresponding to different parts of the integrated circuit. In one embodiment, an integrated circuit includes multiple, duplicate functional blocks. A separate thermal sensor is coupled to each of the duplicate functional blocks, preferably in the same relative location on each of the duplicate functional blocks, and preferably at a hotspot. One embodiment also includes thermal sensors on one or more functional blocks of other types in the integrated circuit. One embodiment includes a thermal sensor positioned at a cool spot, such as at the edge of the integrated circuit chip. Each of the thermal sensors may have ports to enable power and ground connections or data connections between the sensors and external components or devices.
    Type: Application
    Filed: June 28, 2005
    Publication date: December 28, 2006
    Inventors: Munehiro Yoshida, Daniel Stasiak, Michael Wang, Charles Johns, Hiroki Kihara, Tetsuji Tamura, Kazuaki Yazawa, Iwao Takiguchi
  • Patent number: 7102417
    Abstract: An integrated circuit die is disclosed including a temperature detection circuit and a memory configured to store calibration data. The temperature detection circuit is operatively coupled to the memory, and receives an input signal. The temperature detection circuit is configured to produce an output signal dependent upon the input signal and indicative of whether a temperature of the integrated circuit die is greater than a selected temperature. During a normal operating mode of the integrated circuit die the input signal comprises the calibration data. A system and methods for calibrating the temperature detection circuit are also described.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: September 5, 2006
    Assignee: International Business Machines Corporation
    Inventors: Melia F. Gordon, Charles Ray Johns, Hiroki Kihara, Iwao Takiguchi, Tetsuji Tamura, Michael Fan Wang, Kazuaki Yazawa, Munehiro Yoshida
  • Publication number: 20060097757
    Abstract: An integrated circuit die is disclosed including a temperature detection circuit and a memory configured to store calibration data. The temperature detection circuit is operatively coupled to the memory, and receives an input signal. The temperature detection circuit is configured to produce an output signal dependent upon the input signal and indicative of whether a temperature of the integrated circuit die is greater than a selected temperature. During a normal operating mode of the integrated circuit die the input signal comprises the calibration data. A system and methods for calibrating the temperature detection circuit are also described.
    Type: Application
    Filed: November 5, 2004
    Publication date: May 11, 2006
    Applicants: International Business Machines Corporation, Sony Computer Entertainment Inc., Toshiba America Electronic Components, Inc., Kabushiki Kaisha Toshiba
    Inventors: Melia Gordon, Charles Johns, Hiroki Kihara, Iwao Takiguchi, Tetsuji Tamura, Michael Wang, Kazuaki Yazawa, Munehiro Yoshida
  • Publication number: 20050273208
    Abstract: A temperature predicting unit predicts the temperature of an electronic device after a predetermined period, and the speed of temperature variation from the operating state of the load. Based on the results of prediction by the temperature predicting unit, a selection unit instructs either one or both of a nozzle control unit and an electric fan control unit to exercise control. According to a control signal from the selection unit, the nozzle control unit transmits a control signal to a nozzle unit to drive a jet cooling apparatus. According to a control signal from the selection unit, the electric fan control unit transmits a control signal to an electric fan unit to drive an electric fan. The selection unit selects the electric fan when the predicted speed of temperature variation exceeds a predetermined threshold, and selects the jet cooling apparatus when the predetermined thresholds is not exceeded.
    Type: Application
    Filed: May 27, 2005
    Publication date: December 8, 2005
    Inventors: Kazuaki Yazawa, Iwao Takiguchi, Tetsuji Tamura, Atsuhiko Imai, Kenichi Adachi
  • Publication number: 20050241673
    Abstract: In a resist removing apparatus of the present invention, a distance between a surface of a substrate (10) and an ultraviolet rays transmission plate (3) is adjusted to a predetermined distance by an upward and downward moving mechanism (2b) of a substrate stage (2), and O3 water is supplied from an O3 water supply section (12) to a treatment space formed between the surface of the substrate (10) and the ultraviolet ray transmission plate (3) to form a liquid film (41). Various kinds of active oxygen are generated by emitting ultraviolet rays of wavelengths of 172 nm to 310 nm to the liquid film (41) by an ultraviolet lamp, and dissolving O3, and thereby the resist is dissolved and removed.
    Type: Application
    Filed: April 15, 2003
    Publication date: November 3, 2005
    Inventors: Tamio Endo, Atsushi Sato, Yasuhiko Amano, Tetsuji Tamura
  • Patent number: 4653610
    Abstract: Disclosed is apparatus for automatically applying lubricant in a lifting device which raises and lowers a platform by intermeshing of pinions of a jack-up device mounted on the platform and racks provided in the longitudinal direction of legs for supporting the platform, rockable arms supported by a frame of the jack-up device being provided above the pinion meshing with the rack, a roller brush being rotatably provided on the rockable arms so as to come into sliding contact with the pinion, and a lubricant supplying device being connected to the roller brush.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: March 31, 1987
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventors: Tetsuji Tamura, Masahiko Sasaki
  • Patent number: D548658
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: August 14, 2007
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Katayama Kogyo Co., Ltd.
    Inventors: Mamoru Kagawa, Hiroyuki Sase, Tetsuji Tamura