Patents by Inventor Hajime Hayashi
Hajime Hayashi 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: 20240171874Abstract: A photoelectric conversion device includes pixels each including a photoelectric conversion unit for generating charge by photoelectric conversion, first to fourth charge holding portions configured to be transferred charge from the photoelectric conversion unit, and an output unit for outputting a signal corresponding to charge transferred from one of the first to fourth charge holding portions, and a control circuit for controlling the plurality of pixels. The control circuit performs, during one frame, transferring charge in the photoelectric conversion unit to the first or second charge holding portion a plural times for each of the first and second charge holding portions in each of the pixels at the same time, and performs, during the one frame, reading out from each pixel a signal corresponding to charge in the third charge holding portion and a signal corresponding to charge in the fourth charge holding portion.Type: ApplicationFiled: November 8, 2023Publication date: May 23, 2024Inventors: SHUHEI HAYASHI, KENTO WATANABE, YUSUKE ONUKI, HAJIME IKEDA, DAISUKE KOBAYASHI, TAKENORI KOBUSE, TARO TAKITA, NAOKI ISHIKAWA, YUSUKE YAMASHITA, TAKAHIRO KAMIKURA, SHIGEHARU AOKI
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Publication number: 20240123623Abstract: A control device controls a robot in which a sensor is disposed, the control device comprising: a sensor coordinate storage unit for storing coordinate system information of a sensor coordinate system; a sensor setting storage unit for storing setting information; a sensor data receiving unit for receiving sensor data; an axis angle detection unit for detecting an angle of each of a plurality of axes included in the robot; a sensor value estimation unit for estimating a sensor value to be detected; and an anomalous sensor value determination unit for comparing the value of the sensor data and the sensor value estimated by the sensor value estimation unit and determining that the sensor data receiving unit is receiving sensor data from a sensor of another robot if the difference between the value of the sensor data and the estimated sensor value exceeds a preset threshold value.Type: ApplicationFiled: March 22, 2022Publication date: April 18, 2024Inventors: Kouichirou HAYASHI, Tomoyuki YAMAMOTO, Hajime SUZUKI
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Publication number: 20240113138Abstract: A semiconductor device that can be miniaturized or highly integrated is provided. The semiconductor device includes a capacitor, a transistor, and a first insulating layer. The capacitor includes first and second conductive layers and a second insulating layer. The second insulating layer is in contact with a side surface of the first conductive layer, and the second conductive layer covers at least part of the side surface of the first conductive layer with the second insulating layer therebetween. The transistor includes third to fifth conductive layers, a semiconductor layer, and a third insulating layer. The third conductive layer is in contact with a top surface of the first conductive layer. The first insulating layer is provided over the third conductive layer, and the fourth conductive layer is provided over the first insulating layer. The first insulating layer and the fourth conductive layer include an opening portion reaching the third conductive layer.Type: ApplicationFiled: September 25, 2023Publication date: April 4, 2024Inventors: Hajime KIMURA, Kentaro HAYASHI, Shunpei YAMAZAKI
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Publication number: 20040146702Abstract: A friction material having a reinforcement material that includes mineral fibers, metal fibers, aramid fibers, cellulose fibers and combinations thereof but does not include carbon steel. The friction material has a relatively uniform coefficient of friction and causes relatively less wear of braking components.Type: ApplicationFiled: January 29, 2003Publication date: July 29, 2004Inventors: Xinming Shao, Hajime Hayashi
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Publication number: 20040140167Abstract: A friction material having a filler that includes titanium dioxide particles having a diameter that is less than about fifteen micrometers. The friction material has a relatively uniform coefficient of friction and causes relatively less wear of braking components.Type: ApplicationFiled: January 16, 2003Publication date: July 22, 2004Inventors: Xinming Shao, Tsukasa Baba, Hajime Hayashi
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Patent number: 5355085Abstract: A plurality of SQUID flux sensors are supplied with their respective bias currents at the same time from a bias source. A superconducting multiplexer multiplexes output signals of the SQUID flux sensors during an interval of time when the bias currents are supplied to the SQUID flux sensors. A multiplexer, placed in a room-temperature environment, distributes each of the multiplexed output signals of the SQUID flux sensors to a respective one of the output terminals which correspond to the SQUID flux sensors. Each signal which has been output to an individual output terminal is counted by a counter, so that an external magnetic flux to a corresponding SQUID flux sensor is measured.Type: GrantFiled: March 20, 1991Date of Patent: October 11, 1994Assignee: Fujitsu, Ltd.Inventors: Yutaka Igarashi, Takao Goto, Takehiko Hayashi, Yoshiyasu Nakashima, Norio Fujimaki, Hajime Hayashi, Kohtaro Gotoh
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Patent number: 5138187Abstract: An amplitude variable pulse generator is provided with two voltage supply sources. The first voltage source supplies a variable voltage which determines the amplitude of the output pulse. The second voltage source is a fixed or constant voltage source which provides a voltage lower in value than the first voltage. The second voltage source quickly pulls up a voltage between a drain and a source of a switching MOSFET, which generates the output pulse, by providing a charging voltage for an output capacitance of the MOSFET. By doing so, the output capacitance of the MOSFET is quickly reduced, and the trailing edge of the output pulse is not rounded even when the variable voltage is low. As a result, the waveform of the output pulse is not rounded for a very small amplitude pulse. Resolution of a supersonic wave device especially a supersonic diagnostic device is thereby improved.Type: GrantFiled: July 20, 1989Date of Patent: August 11, 1992Assignee: Fujitsu LimitedInventors: Tetsuya Matsushima, Yutaka Fukui, Keiichi Murakami, Hajime Hayashi
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Patent number: 5113136Abstract: An apparatus is provided for measuring a very weak magnetic field generated by a human body, etc. External magnetic noise components coming from other magnetic sources and existing around an object whose magnetic field is to be measured are detected by compensation coils of the apparatus. The compensation coils are oriented in multiple dimensional directions. The detected noise components are weighted and added to each other to correctly find the noise components. Thereafter, the noise components mixed in the objective very weak magnetic field are removed, thereby correctly measuring the very weak magnetic field.Type: GrantFiled: January 22, 1990Date of Patent: May 12, 1992Assignee: Fujitsu LimitedInventors: Hajime Hayashi, Yutaka Igarashi, Takehiko Hayashi, Takaki Shimura, Kenji Kawabe
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Patent number: 5045788Abstract: A digital SQUID control system for measuring a weak magnetic flux irradiated from an object includes: a SQUID having Josephson junctions and a superconductively coil; a pick-up coil detecting the weak magnetic flux from the object and flowing a measuring current in the pick-up coil, and an input coil magnetically coupled to the superconductivity coil through the measuring current; a feedback coil magnetically coupled to the superconductivity coil through a feedback current; a feedback circuit for counting positive and negative pulses input from the SQUID, for converting count values to an analog voltage, and for converting the analog voltage to the feedback current; an alternating has current generating circuit connected to the SQUID through an injection terminal, for supplying the alternating bias current to the SQUID; and a pulse rate measuring circuit for calculating a sum of the positive and negative pulses, for converting the sum to an analog voltage, and for outputting the analog voltage to the alternatType: GrantFiled: March 27, 1990Date of Patent: September 3, 1991Assignee: Fujitsu LimitedInventors: Hajime Hayashi, Yutaka Igarashi, Takehiko Hayashi, Takao Goto, Shinichi Amemiya
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Patent number: 4757715Abstract: The present invention relates to a signal processing apparatus for quantitatively measuring ultrasonic characteristics of a medium, such as a human body and realizes the high speed quantitative measurement by processing all signals in the time domain. In the processing for eliminating an error, produced by a degree of convergence of the ultrasonic beam, a correcting function that is a function of the depth and frequency is employed. The correcting function is measured in a no-attenuation medium and converted into a form suited to the time domain processing. The function is stored and such frequency characteristics of the function are sequentially read during an actual medium measurement to control the characteristic of a variable characteristic filter to correct the received signal.Type: GrantFiled: February 17, 1987Date of Patent: July 19, 1988Assignee: Fujitsu LimitedInventors: Hirohide Miwa, Keiichi Murakami, Takaki Shimura, Yutaka Igarashi, Akira Shiba, Hajime Hayashi
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Patent number: 4723553Abstract: An apparatus for measuring acoustic characteristic values of a medium by sending ultrasound pulses into the medium and analyzing the reflected waves from the medium. Medium characteristic values are extracted from the reflected waves, and spectrum scalloping is eliminated. The present invention executes the nonlinear filtering process, for example, the median filtering process to the spectrums, applies a model spectrum to the filtered result and thereby facilitates measurement of supressing fluctuation even when a small number of space average samples one used, by obtaining .beta. from such model spectrum.Type: GrantFiled: June 26, 1986Date of Patent: February 9, 1988Assignee: Fujitsu LimitedInventors: Hirohide Miwa, Keiichi Murakami, Akira Shiba, Takaki Shimura, Hajime Hayashi
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Patent number: 4655228Abstract: A diagnosis apparatus for discriminating a property of the tissue to be observed from the reflected ultrasonic wave uses the nature of the fine structure of the tissue, and more practically uses the interval of small reflecting bodies dispersely distributed in the tissue as the parameters. The intervals flucatuate. Therefore, an average value and/or a degree of fluctuation is calculated and is displayed. For obtaining the average interval, a method of using the cepstrum of the received signal or a method of using the self-correlation of the received signal can be used.Type: GrantFiled: November 28, 1984Date of Patent: April 7, 1987Assignee: Fujitsu LimitedInventors: Takaki Shimura, Keiichi Murakami, Yutaka Igarashi, Akira Shiba, Hajime Hayashi, Hirohide Miwa, Michitoshi Inoue, Masayuki Matsumoto
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Patent number: 4580451Abstract: An ultrasonic sector-scan probe comprises at least an array having a plurality of ultrasonic transducer segments, a window for transmitting and receiving ultrasonic waves and an ultrasonic wave propagation medium filled in a front space between the array and the window. A group of the ultrasonic transducer segments are selectively driven as an aperture and ultrasonic waves emitted therefrom are converged into a beam for transmission and reception. By partly or entirely changing the segments in the group with the ones outside the group the scan line is shifted to a new angle, and a member under test contacted with the window on the outside thereof is sector-scanned by the ultrasonic beam. The array is arranged so that scanning lines of the groups intersect at one point in the window or in its vicinity for sector scan.Type: GrantFiled: May 17, 1985Date of Patent: April 8, 1986Assignee: Fujitsu LimitedInventors: Hirohide Miwa, Hajime Hayashi, Takaki Shimura, Tadahiko Yanashima, Kenji Kawabe, Atsuo Iida
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Patent number: 4570488Abstract: An ultrasonic sector-scan probe comprises at least an array having a plurality of ultrasonic transducer segments, a window for transmitting and receiving ultrasonic waves and an ultrasonic wave propagation medium filled in a front space between the array and the window. A group of the ultrasonic transducer segments are selectively driven as an aperture and ultrasonic waves emitted therefrom are converged into a beam for transmission and reception. By partly or entirely changing the segments in the group with the ones outside the group the scan line is shifted to a new angle, and a member under test contacted with the window on the outside thereof is sector-scanned by the ultrasonic beam. The array is arranged so that scanning lines of the groups intersect at one point in the window or in its vicinity for sector scan.Type: GrantFiled: June 7, 1984Date of Patent: February 18, 1986Assignee: Fujitsu LimitedInventors: Hirohide Miwa, Hajime Hayashi, Takai Shimura, Tadahiko Yanashima, Kenji Kawabe, Atsuo Iida
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Patent number: 4552021Abstract: An ultrasonic diagnostic apparatus protected from multi-reflection of sound echoes. Multi-reflection is avoided by eliminating the reflection from the surface of an electro-sound transducer. This invention eliminates the surface reflection of the transducer by following three methods:(a) changing a direction of each surface of an array of transducer elements to direct the reflected sound wave away from the main direction of the sound beam;(b) applying an acoustic matching layer to a surface of a piezo-electric device of the transducer to cancel out phases of sound waves reflected by the surfaces of the layer and the device; and(c) providing an acoustic matching surface on a front or back face of the piezo-electric device to cancel out phases of sound waves reflected by the surface of the device.Type: GrantFiled: December 30, 1983Date of Patent: November 12, 1985Assignee: Fujitsu LimitedInventors: Hirohide Miwa, Hajime Hayashi, Takaki Shimura, Atsuo Iida, Fumihiro Namiki, Kenji Kawabe, Narutaka Nakao
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Patent number: 4459853Abstract: A probe is provided which comprises a plurality of ultrasonic transducer elements, and is so arranged as to be capable of simultaneously transmitting and receiving ultrasonic beams of plural frequencies. Means is provided for changing the shapes of the effective acoustic field of the ultrasonic beams of each a predetermined number of frequencies by selectively operating the ultrasonic transducer elements or interchanging transducers. The shapes of the effective acoustic fields of the ultrasonic beams of the plural frequencies are made substantially coincident in accordance with the range of distance from the probe. Thereby, the measuring of the tissue or the like with coincident shaped beams of plural frequencies can be realized.Type: GrantFiled: March 31, 1982Date of Patent: July 17, 1984Assignee: Fujitsu LimitedInventors: Hirohide Miwa, Hajime Hayashi, Takaki Shimura