Patents by Inventor Kenji Toyota

Kenji Toyota 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: 20190239538
    Abstract: The present invention relates to a method for producing a whey protein hydrolysate, the method comprising subjecting a whey protein-containing starting material having (a) a lipid content of less than 1 mass % and/or (b) a lactose content of less than 1 mass % to hydrolysis treatment. According to the present invention, a whey protein hydrolysate having excellent flavor with reduced odor is produced by reducing the problems involving rough taste, bitterness, or an unpleasant odor caused by hydrolysis of whey proteins. It is also possible to produce a whey protein hydrolysate that is not easily discolored, and that is prevented from being degraded in quality during the production process and storage thereof.
    Type: Application
    Filed: October 30, 2017
    Publication date: August 8, 2019
    Applicant: MEIJI CO., LTD.
    Inventors: Kenji TOYOTA, Nobutaka YAHIRO
  • Patent number: 10224914
    Abstract: A semiconductor apparatus, includes a common mode detector circuit that receives alternating current (AC) signals in a common mode.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: March 5, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Tomohiro Sano, Masakazu Mizokami, Kenji Toyota, Yoshikazu Furuta
  • Publication number: 20180219540
    Abstract: A semiconductor apparatus, includes a common mode detector circuit that receives alternating current (AC) signals in a common mode.
    Type: Application
    Filed: March 29, 2018
    Publication date: August 2, 2018
    Inventors: Tomohiro SANO, Masakazu MIZOKAMI, Kenji TOYOTA, Yoshikazu FURUTA
  • Patent number: 9955717
    Abstract: The invention is directed to a nystose crystal-containing powder that has excellent fluidity suitable for handling, and shows a suppressed powder-blown-up phenomenon. The nystose crystal-containing powder has a nystose content of 83 to 89 wt %; the powder has 0.2 to 18.6 wt % of gluconic acid relative to a total weight of nystose crystals contained in the powder; and the powder has a water content of 8 to 14 wt %.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: May 1, 2018
    Assignee: MEIJI CO., LTD.
    Inventors: Kenji Toyota, Hiroki Ohara
  • Patent number: 9960757
    Abstract: A semiconductor apparatus includes a common mode detector circuit that receives differential alternating current (AC) signal; and a detector circuit.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: May 1, 2018
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Tomohiro Sano, Masakazu Mizokami, Kenji Toyota, Yoshikazu Furuta
  • Publication number: 20170250684
    Abstract: A semiconductor apparatus includes a common mode detector circuit that receives differential alternating current (AC) signal; and a detector circuit.
    Type: Application
    Filed: May 17, 2017
    Publication date: August 31, 2017
    Inventors: Tomohiro SANO, Masakazu MIZOKAMAI, Kenji TOYOTA, Yoshikazu FURUTA
  • Patent number: 9680457
    Abstract: A semiconductor apparatus that can detect the amplitude level of harmonics is provided. A semiconductor apparatus includes a common mode detector circuit that detects alternating current (AC) signals in a common mode, and a detector circuit that detects the amplitude level of an even-order harmonic output from the common mode detector circuit. The common mode detector circuit combines the AC signals being differential signals in common mode, thereby cancelling out odd-order harmonics to obtain direct current and even-order harmonics. The detector circuit detects the amplitude level of the even-order harmonics from a signal obtained by the common mode detection, and outputs the detected amplitude level.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: June 13, 2017
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Tomohiro Sano, Masakazu Mizokami, Kenji Toyota, Yoshikazu Furuta
  • Publication number: 20160273008
    Abstract: Provided is a method for producing fructooligosaccharide, wherein, in a reaction where fructooligosaccharide is produced by reacting ?-fructofuranosidase with sucrose, and in a reaction step where glucose by-produced by the above reaction is decreased by glucose oxidase, an amount of dissolved oxygen is adjusted to 2 to 8 ppm. This method enables fructooligosaccharides to be produced inexpensively and efficiently.
    Type: Application
    Filed: November 6, 2014
    Publication date: September 22, 2016
    Applicant: MEIJI CO., LTD.
    Inventors: Kenji TOYOTA, Hiroki OHARA
  • Publication number: 20160072490
    Abstract: A semiconductor apparatus that can detect the amplitude level of harmonics is provided. A semiconductor apparatus 10 includes a common mode detector circuit 11 that detects AC signals in a common mode, and a detector circuit 12 that detects the amplitude level of an even-order harmonic output from the common mode detector circuit 11. The common mode detector circuit 11 combines AC signals being differential signals in common mode, thereby cancelling out odd-order harmonics to obtain direct current and even-order harmonics. The detector circuit 12 detects the amplitude level of the even-order harmonics from a signal obtained by the common mode detection, and outputs the detected amplitude level.
    Type: Application
    Filed: September 4, 2015
    Publication date: March 10, 2016
    Inventors: Tomohiro SANO, Masakazu Mizokami, Kenji Toyota, Yoshikazu Furuta
  • Publication number: 20150282511
    Abstract: The objects of the present invention are to provide a novel nystose crystal-containing powder which has fluidity suitable for handling and shows a suppressed powder-blown-up phenomenon, and to provide a method for producing the same. According to the present invention, a nystose crystal-containing powder is provided, wherein: (a) the powder has a nystose content of 71 to 90 wt %; (b) the powder contains 0.2 to 18.6 wt % gluconic acid relative to a total weight of nystose crystals contained in the powder; and (c) the powder has a water content of 7-14 wt %.
    Type: Application
    Filed: November 12, 2013
    Publication date: October 8, 2015
    Applicant: Meiji Co., Ltd
    Inventors: Kenji Toyota, Hiroki Ohara
  • Patent number: 8160178
    Abstract: A transmitter has a transmission modulator including first and second modulators, a phase comparator and a controller. First and second non-inverted local signals supplied to the modulators are set to have a predetermined phase difference. In a calibration action for reducing carrier leakage, the phase comparator is supplied with the first or second local signals, and carrier signals leaking at an output of the transmission modulator. The controller keeps changing the ratio of DC biasing currents to paired transistors of each modulator until the predetermined phase difference is detected with the phase comparator. When the predetermined phase difference is detected, the controller stops changing the ratio of DC biasing currents. The chip footprint of a transmitter on the direct up-conversion (DUC) architecture is reduced, and carrier leakage owing to local signals supplied to the transmission modulator are decreased.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: April 17, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Kenji Toyota, Kazuhiko Hikasa
  • Publication number: 20090225897
    Abstract: The transmitter has a transmission modulator including first and second modulators, a phase comparator and a controller. First and second non-inverted local signals supplied to the modulators are set to have a predetermined phase difference. In a calibration action for reducing carrier leakage, the phase comparator is supplied with the first or second local signals, and carrier signals leaking at an output of the transmission modulator. The controller keeps changing the ratio of DC biasing currents to paired transistors of each modulator until the predetermined phase difference is detected with the phase comparator. When the predetermined phase difference is detected, the controller stops changing the ratio of DC biasing currents. The invention contributes the reduction in the chip footprint of a transmitter on the direct up-conversion (DUC) architecture, and the decrease in carrier leakage owing to local signals supplied to the transmission modulator.
    Type: Application
    Filed: March 3, 2009
    Publication date: September 10, 2009
    Inventors: Kenji Toyota, Kazuhiko Hikasa
  • Patent number: 7463091
    Abstract: The present invention provides a communication semiconductor integrated circuit device equipped with a high-frequency power amplifier circuit including a gain control amplifier and a bias circuit which supplies such a bias current as to linearly change the gain of the gain control amplifier, and a wireless communication system using the same. A bias current generating circuit which supplies a bias current to a linear amplifier that constitutes the communication high-frequency power amplifier circuit, comprises a plurality of variable current sources respectively different in current value and start level. These variable current sources are controlled according to an input control voltage and thereby combine their currents into a bias current. The combined bias current changes exponentially with respect to the input control voltage.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: December 9, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Kenji Toyota, Kazuaki Hori, Kazuhiko Hikasa
  • Patent number: 7356092
    Abstract: When a transmitting oscillator is built in a communication semiconductor integrated circuit device like a high-frequency IC constituting a wireless communication system, the system prevents degradation of the accuracy of control on the output power of a power amplifier due to noise jumped from an output pin of the transmitting oscillator to an input pin for a detected signal (feedback signal) of an output level of the power amplifier. The transmitting oscillator is built in the high-frequency IC. The detected signal of the output level of the power amplifier, which is detected by a coupler, is attenuated to a level slightly higher than the level of noise jumped from the output pin of the transmitting oscillator to the input pin for a feedback signal of an amplitude control loop, which in turn is inputted to the feedback signal input pin of the high-frequency IC.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: April 8, 2008
    Assignee: Renesas Technology Corporation
    Inventors: Ryoichi Takano, Kazuhiko Hikasa, Kenji Toyota, Kazuhisa Okada
  • Publication number: 20080024227
    Abstract: The present invention provides a communication semiconductor integrated circuit device equipped with a high-frequency power amplifier circuit including a gain control amplifier and a bias circuit which supplies such a bias current as to linearly change the gain of the gain control amplifier, and a wireless communication system using the same. A bias current generating circuit which supplies a bias current to a linear amplifier that constitutes the communication high-frequency power amplifier circuit, comprises a plurality of variable current sources respectively different in current value and start level. These variable current sources are controlled according to an input control voltage and thereby combine their currents into a bias current. The combined bias current changes exponentially with respect to the input control voltage.
    Type: Application
    Filed: September 27, 2007
    Publication date: January 31, 2008
    Inventors: Kenji Toyota, Kazuaki Hori, Kazuhiko Hikasa
  • Patent number: 7288986
    Abstract: The present invention provides a communication semiconductor integrated circuit device equipped with a high-frequency power amplifier circuit including a gain control amplifier and a bias circuit which supplies such a bias current as to linearly change the gain of the gain control amplifier, and a wireless communication system using the same. A bias current generating circuit which supplies a bias current to a linear amplifier that constitutes the communication high-frequency power amplifier circuit, comprises a plurality of variable current sources respectively different in current value and start level. These variable current sources are controlled according to an input control voltage and thereby combine their currents into a bias current. The combined bias current changes exponentially with respect to the input control voltage.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: October 30, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Kenji Toyota, Kazuaki Hori, Kazuhiko Hikasa
  • Publication number: 20060234661
    Abstract: The present invention provides a semiconductor integrated circuit for communication (radio frequency IC) capable of detecting and correcting variations in an amplitude loop band of a transmission circuit having a phase control loop and an amplitude control loop without using an external measuring apparatus. In a semiconductor integrated circuit for communication (radio frequency IC) including a transmission circuit having a phase control loop for controlling the phase of a carrier wave and an amplitude control loop for controlling the amplitude of a transmission output signal, a calibration circuit for detecting variations in a loop gain of the amplitude control loop and correcting the loop band is provided.
    Type: Application
    Filed: April 17, 2006
    Publication date: October 19, 2006
    Inventors: Kenji Toyota, Ryoichi Takano, Noriyuki Kurakami
  • Publication number: 20060189285
    Abstract: A polar-loop wireless communication apparatus includes, on a forward path between an amplitude detector and a power amplifier which constitute an amplitude control loop, a variable gain amplifier and a switch to change characteristics of a loop filter to output a frequency bandwidth of the amplitude control loop to an order less than an order for normal operation. The system is operated with the characteristics set to the lower order to measure outputs from the power amplifier to calibrate the output power of the power transmitter, and the register is operated with the characteristics set to the higher order to measure the open loop gain of the amplitude control. According to results of the calculation, data to correct gain characteristics of the variable gain amplifier with respect to an output control signal is stored in a nonvolatile memory of a baseband circuit.
    Type: Application
    Filed: April 21, 2006
    Publication date: August 24, 2006
    Inventors: Ryoichi Takano, Kenji Toyota, Patrick Wurm, Robert Henshaw, David Freeborough
  • Patent number: 7082290
    Abstract: A polar-loop wireless communication apparatus includes, on a forward path between an amplitude detector and a power amplifier which constitute an amplitude control loop, a variable gain amplifier and a switch to change characteristics of a loop filter to output a frequency bandwidth of the amplitude control loop to an order less than an order for normal operation. The system is operated with the characteristics set to the lower order to measure outputs from the power amplifier to calibrate the output power of the power transmitter, and the register is operated with the characteristics set to the higher order to measure the open loop gain of the amplitude control. According to results of the calculation, data to correct gain characteristics of the variable gain amplifier with respect to an output control signal is stored in a nonvolatile memory of a baseband circuit.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: July 25, 2006
    Assignees: Renesas Technology Corp., TTPCOM Limited
    Inventors: Ryoichi Takano, Kenji Toyota, Patrick Wurm, Robert Astle Henshaw, David Freeborough
  • Publication number: 20050233714
    Abstract: A variable gain amplifier of low amplitude distortion, and low noise, having a large variable range, is provided. A variable gain differential amplifier that controls a gain by use of bias current is used as each of unit amplifiers (VGAs) making up the variable gain amplifier. A large variable gain range is obtained by series-connecting a plurality of the variable gain differential amplifiers. An attenuator is installed on the input side of the unit amplifier (VGA) at least in the initial stage. By doing so, it becomes possible to prevent amplitude distortion from occurring to the respective VGAs. An attenuator utilizing voltage division by capacitors, generating no noise, is used for lowering noise. Further, the variable gain amplifier is provided with a fixed gain amplifier installed in the final stage as necessary in order to obtain a total gain as desired.
    Type: Application
    Filed: June 10, 2005
    Publication date: October 20, 2005
    Inventors: Hisayoshi Kajiwara, Kenji Toyota, Kazuhiko Hikasa, Taizo Yamawaki