Patents by Inventor Tsuyoshi Higuchi

Tsuyoshi Higuchi 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: 20060170794
    Abstract: A second source follower circuit of a reference voltage generator includes a transistor having the same characteristics as a first source follower circuit of a pixel. Accordingly, the second source follower circuit can generate a second reference voltage according to the change in characteristics of the first source follower circuit. A noise voltage switching circuit outputs a first voltage as a noise voltage to a pixel signal generator when the noise voltage is equal to or lower than the second reference voltage. In a reset state, the noise voltage and the second reference voltage always have a predetermined voltage difference. Therefore, deterioration in image quality can be prevented even when capturing a subject having high brightness. Since a trimming circuit or the like selecting any one of a plurality of reference voltages according to characteristics of a formed transistor becomes unnecessary, the cost of an imaging device can be reduced.
    Type: Application
    Filed: May 20, 2005
    Publication date: August 3, 2006
    Inventors: Tsuyoshi Higuchi, Jun Funakoshi, Seiji Yamagata, Toshitaka Mizuguchi, Katsuyoshi Yamamoto
  • Patent number: 7075474
    Abstract: A ramp waveform generation circuit which comprises a first reference power supply, and supplies a ramp waveform signal to an analog/digital conversion circuit further comprises a connection circuit for reflecting the amount of fluctuation of the output potential of a second reference power supply which is installed in a noise elimination circuit for eliminating the noise of an analog signal inputted to the analog/digital conversion circuit in the output potential of the first reference power supply.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: July 11, 2006
    Assignee: Fujitsu Limited
    Inventors: Seiji Yamagata, Jun Funakoshi, Tsuyoshi Higuchi, Toshitaka Mizuguchi
  • Publication number: 20060001753
    Abstract: An imaging device provided with a read circuit in which a light-shielding region is formed in a part of an image region where a plurality of optical/electrical conversion devices is two-dimensionally arrayed in the row and column directions and which converts a optically detected signal outputted from each of the optical/electrical conversion devices for each of the column into a digital signal, comprises a storage device for storing the outputted digital signal outputted in relation with the optical/electrical conversion device in the light-shielding region and a difference calculation device for calculating a difference between the outputted digital signal in relation with the optical/electrical conversion device in a light-receiving region except the light-shielding region and a value stored in the storage device.
    Type: Application
    Filed: November 24, 2004
    Publication date: January 5, 2006
    Inventors: Jun Funakoshi, Katsuyoshi Yamamoto, Asao Kokubo, Toshitaka Mizuguchi, Tsuyoshi Higuchi
  • Publication number: 20060001564
    Abstract: A ramp waveform generation circuit which comprises a first reference power supply, and supplies a ramp waveform signal to an analog/digital conversion circuit further comprises a connection circuit for reflecting the amount of fluctuation of the output potential of a second reference power supply which is installed in a noise elimination circuit for eliminating the noise of an analog signal inputted to the analog/digital conversion circuit in the output potential of the first reference power supply.
    Type: Application
    Filed: November 30, 2004
    Publication date: January 5, 2006
    Inventors: Seiji Yamagata, Jun Funakoshi, Tsuyoshi Higuchi, Toshitaka Mizuguchi
  • Publication number: 20060001476
    Abstract: A circuit for stabilizing an electric current includes a constant voltage supplying circuit configured to supply a constant voltage, and a current generating circuit coupled to the constant voltage supplying circuit to generate an electric current based on a predetermined voltage responsive to the constant voltage and to adjust a current amount of the electric current to a predetermined amount by feedback control based on comparison of the predetermined voltage with a voltage appearing across a predetermined resistance responsive to the electric current.
    Type: Application
    Filed: November 19, 2004
    Publication date: January 5, 2006
    Inventors: Makoto Yanagisawa, Jun Funakoshi, Seiji Yamagata, Toshitaka Mizuguchi, Tsuyoshi Higuchi
  • Publication number: 20060001749
    Abstract: A method for controlling a solid-state imaging apparatus, which includes a plurality of pixels, includes selecting a resetting element of one of the pixels, resetting a detecting unit connected to the pixel, transmitting to a detecting unit, an electric charge accumulated after photoelectric conversion performed by a photoelectric converting element of the pixel, and providing control to set a second end of a transmitting control signal line to an open state.
    Type: Application
    Filed: November 30, 2004
    Publication date: January 5, 2006
    Inventors: Tsuyoshi Higuchi, Jun Funakoshi, Seiji Yamagata, Toshitaka Mizuguchi, Katsuyoshi Yamamoto
  • Publication number: 20060001750
    Abstract: A differential comparator which outputs positive and/or negative logic signals to an output terminal according to the coincidence/non-coincidence of first and second input signal levels inputted to first and second input terminals, respectively, comprises an offset cancel function composed of an offset capacitor device provided on the differential comparator side of the first and second terminals, a first switch for short-circuiting the first and second input terminals in such a way as to form a closed loop including the offset capacitor device, and a second switch for short-circuiting both the connection point between the offset capacitor device and the differential comparator, and the output terminal.
    Type: Application
    Filed: December 10, 2004
    Publication date: January 5, 2006
    Inventors: Toshitaka Mizuguchi, Jun Funakoshi, Seiji Yamagata, Tsuyoshi Higuchi
  • Patent number: 6789837
    Abstract: A vehicle body structure comprises: a side roof rail, a rear roof rail, and a rear pillar, which are disposed in the rear portion of an vehicle body, and which intersect each other at an intersecting portion; a rear door provided for optionally opening and closing a rear port of the vehicle body; an automatic opening and closing unit disposed inside the vehicle body and in the vicinity of the intersecting portion; an aperture provided in the intersecting portion; and an arm provided through the aperture for connecting the automatic opening and closing unit to the rear door. The automatic opening and closing unit is fixed to at least the side roof rail, the rear roof rail, and the rear pillar so as to pass above the aperture.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: September 14, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Jun Mitsui, Tsuyoshi Higuchi, Kanji Fujii, Yoshitomo Ihashi
  • Patent number: 6765423
    Abstract: A variable delay circuit delays a first input signal in accordance with a delay adjustment signal and outputs the delayed signal as a first delay signal. A decision circuit outputs, in accordance with a phase difference between the first delay signal and a clock signal, an increase or decrease signal. A delay adjustment circuit generates, in accordance with the increase or decrease signal, the delay adjustment signal to adjust the variable delay circuit. Accordingly, even when a discrepancy in timing between the first input signal and clock signal occurs due to a change in temperature, a fluctuation in voltage or the like, a first receiver circuit can receive the first input signal in synchronization with the clock signal without fail. Since the valid period of the first input signal relative to the clock signal can be minimized, the transmission rate of the first input signal can be increased.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: July 20, 2004
    Assignee: Fujitsu Limited
    Inventor: Tsuyoshi Higuchi
  • Patent number: 6657904
    Abstract: A semiconductor device including a voltage generator which sets a voltage of a non-selected word line to a negative voltage produced by the voltage generator when the semiconductor device is set in a normal mode. A circuit resets the voltage of the non-selected word line to a ground voltage when the semiconductor device is set in a predetermined mode.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: December 2, 2003
    Assignee: Fujitsu Limited
    Inventor: Tsuyoshi Higuchi
  • Publication number: 20030218357
    Abstract: A vehicle body structure comprises: a side roof rail, a rear roof rail, and a rear pillar, which are disposed in the rear portion of an vehicle body, and which intersect each other at an intersecting portion; a rear door provided for optionally opening and closing a rear port of the vehicle body; an automatic opening and closing unit disposed inside the vehicle body and in the vicinity of the intersecting portion; an aperture provided in the intersecting portion; and an arm provided through the aperture for connecting the automatic opening and closing unit to the rear door. The automatic opening and closing unit is fixed to at least the side roof rail, the rear roof rail, and the rear pillar so as to pass above the aperture.
    Type: Application
    Filed: May 19, 2003
    Publication date: November 27, 2003
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Jun Mitsui, Tsuyoshi Higuchi, Kanji Fujii, Yoshitomo Ihashi
  • Patent number: 6654269
    Abstract: A memory cell of the association memory including a register, a transmission circuit, and a match circuit is provided. A register stores storage data when its own memory cell is not in the don't care state, and stores the don't care data in the adjacent memory cell when in the don't care state. A transmission circuit transmits the don't care data indicating that the other adjacent memory cell is in the don't care state to the other adjacent memory cell when both of the don't care data transmitted from the one adjacent memory cell and the don't care data stored its own memory cell indicate the don't care state. A match circuit outputs match data indicating the agreement when the storage data stored in the register and the search data supplied from the outside agree with each other.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: November 25, 2003
    Assignee: Fujitsu Limited
    Inventor: Tsuyoshi Higuchi
  • Publication number: 20030194689
    Abstract: A structured document type determination system is provided with a feature value extraction unit for extracting a value of each of a plurality of features included in a feature list which is disposed in advance from each of a plurality of structured documents and a determination rule creating unit for creating a determination rule from extracted feature values by using a data mining tool. The structured document type determination system makes an evaluation of the determination rule by comparing results of determining the types of structured documents according to the determination rule and teacher data, and repeatedly delivers a tuning parameter to the data mining tool so as to create a plurality of determination rules and to derive an optimum determination rule.
    Type: Application
    Filed: October 23, 2002
    Publication date: October 16, 2003
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hitoshi Kamasaka, Tsuyoshi Higuchi, Junichi Kitsuki, Toshiyuki Kimura, Takayuki Tamura
  • Publication number: 20030184354
    Abstract: A variable delay circuit delays a first input signal in accordance with a delay adjustment signal and outputs the delayed signal as a first delay signal. A decision circuit outputs, in accordance with a phase difference between the first delay signal and a clock signal, an increase or decrease signal. A delay adjustment circuit generates, in accordance with the increase or decrease signal, the delay adjustment signal to adjust the variable delay circuit. Accordingly, even when a discrepancy in timing between the first input signal and clock signal occurs due to a change in temperature, a fluctuation in voltage or the like, a first receiver circuit can receive the first input signal in synchronization with the clock signal without fail. Since the valid period of the first input signal relative to the clock signal can be minimized, the transmission rate of the first input signal can be increased.
    Type: Application
    Filed: September 30, 2002
    Publication date: October 2, 2003
    Applicant: FUJITSU LIMITED
    Inventor: Tsuyoshi Higuchi
  • Patent number: 6582207
    Abstract: An objective of the present invention is to provide a motor compressor that reduces noise by lessening a contact area between a stator and a shell, wherein a motor element is constituted of a stator having a stator core that contacts and is fixed to an internal wall of the closed vessel, and a rotator having a magnetic substance, which is attached to the rotating shaft and is rotatably supported in the inside of the stator construct. It is essential that H<Ho is satisfied wherein H is a dimension in a rotating shaft direction of an area in which the stator core contacts the closed vessel and Ho is a dimension in a rotating shaft direction of the stator core.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: June 24, 2003
    Assignee: Sanyo Electric Co., LTD
    Inventors: Kenzo Matsumoto, Manabu Takenaka, Tsuyoshi Higuchi, Kazuaki Fujiwara, Keijiro Igarashi, Masaaki Takezawa, Kazuhiko Arai
  • Publication number: 20030095425
    Abstract: A memory cell of the association memory including a register, a transmission circuit, and a match circuit is provided. A register stores storage data when its own memory cell is not in the don't care state, and stores the don't care data in the adjacent memory cell when in the don't care state. A transmission circuit transmits the don't care data indicating that the other adjacent memory cell is in the don't care state to the other adjacent memory cell when both of the don't care data transmitted from the one adjacent memory cell and the don't care data stored its own memory cell indicate the don't care state. A match circuit outputs match data indicating the agreement when the storage data stored in the register and the search data supplied from the outside agree with each other.
    Type: Application
    Filed: March 25, 2002
    Publication date: May 22, 2003
    Applicant: FUJITSU LIMITED
    Inventor: Tsuyoshi Higuchi
  • Patent number: 6533558
    Abstract: An object of the present invention is to attain the downsizing of a closed rotary compressor while realizing separation of oil from gas without any problem, and since an electric motor is constituted by a motor of a magnetic pole concentrated winding type which includes: a stator fixed to the inner wall of a closed container; a rotator rotatably supported by a rotating shaft on the inner side of said stator; a stator core constituting said stator; a plurality of cog portions and slot portions formed to said stator core; and a stator winding directly wound around each cog portion utilizing the slot portions, a protrusion dimension of the winding from the stator core is reduced, and the excellent oil separation effect can be obtained.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: March 18, 2003
    Assignee: Sanyo Electric Co., LTD
    Inventors: Kenzo Matsumoto, Manabu Takenaka, Tsuyoshi Higuchi, Kazuaki Fujiwara, Dai Matsuura, Aritomo Sato, Akira Hashimoto
  • Patent number: 6522004
    Abstract: In a semiconductor storage device, a line of lower-side backing wiring is provided on a line of gate wiring via an insulation layer, and a line of upper-side backing wiring is provided further on the top layer thereof via another insulation layer. Contacts between the gate wiring and upper-side backing wiring are distributed and arranged on two or more different lines extending in a vertical direction with respect to a direction to which the gate wiring extends, and any contacts adjacent to each other of the contacts are arranged on different lines. The lower-side backing wiring passes through between the adjacent contacts.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: February 18, 2003
    Assignee: Fujitsu Limited
    Inventor: Tsuyoshi Higuchi
  • Publication number: 20020097610
    Abstract: In a semiconductor device of the present invention, a voltage generator sets a voltage of a non-selected word line to a negative voltage produced by the voltage generator when the semiconductor device is set in a normal mode. A circuit resets the voltage of the non-selected word line to a ground voltage when the semiconductor device is set in a predetermined mode.
    Type: Application
    Filed: January 16, 2002
    Publication date: July 25, 2002
    Applicant: FUJITSU LIMITED
    Inventor: Tsuyoshi Higuchi
  • Publication number: 20020051715
    Abstract: An objective of the present invention is to provide a motor compressor that reduces noise by lessening a contact area between a stator and a shell, wherein a motor element is constituted of a stator having a stator core that contacts and is fixed to an internal wall of the closed vessel, and a rotator having a magnetic substance, which is attached to the rotating shaft and is rotatably supported in the inside of the stator construct. It is essential that H<Ho is satisfied wherein H is a dimension in a rotating shaft direction of an area in which the stator core contacts the closed vessel and Ho is a dimension in a rotating shaft direction of the stator core.
    Type: Application
    Filed: May 24, 2001
    Publication date: May 2, 2002
    Inventors: Kenzo Matsumoto, Manabu Takenaka, Tsuyoshi Higuchi, Kazuaki Fujiwara, Keijiro Igarashi, Masaaki Takezawa, Kazuhiko Arai