Patents by Inventor Toshikazu Tsuchiya

Toshikazu Tsuchiya 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: 20140037305
    Abstract: The image forming apparatus includes a developing unit that contains developer and that is detachable; a detection member that includes a detected electrode and that moves around a rotation shaft in the developing unit, an electrostatic capacitance sensor electrode that is provided on an outer side of the developing unit, an electrostatic capacitance sensor that detects an electrostatic capacitance between the detected electrode and the electrostatic capacitance sensor electrode and that outputs data related to the detected electrostatic capacitance, and a CPU that determines an amount of the developer in the developing unit based on the data output from the electrostatic capacitance sensor.
    Type: Application
    Filed: April 19, 2012
    Publication date: February 6, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masafumi Monde, Toshikazu Tsuchiya, Hidetoshi Hanamoto, Tsutomu Ishida
  • Publication number: 20140023385
    Abstract: The image forming apparatus includes a developing unit that is detachable and contains a developer, a detection member that includes an electrode to be detected and is rotatable around a rotation axis in the developing unit, an agitator that moves around the rotation axis in the developing unit; an electrostatic capacitance sensor electrode provided on an exterior of the developing unit, an electrostatic capacitance sensor that detects electrostatic capacitance between the electrode to be detected and the electrostatic capacitance sensor electrode, and outputs data on the detected electrostatic capacitance, and a CPU that determines an amount of developer in the developing unit based on the data output from the electrostatic capacitance sensor.
    Type: Application
    Filed: April 4, 2012
    Publication date: January 23, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinji Hosoya, Toshikazu Tsuchiya, Masafumi Monde, Hidetoshi Hanamoto, Tsutomu Ishida
  • Patent number: 8605019
    Abstract: A display device of at least one embodiment of the present invention includes at least one correcting device for, in a case where a first data signal is to be written to a first pixel during a unique horizontal period, (i) carrying out a first gray scale correction with respect to display data corresponding to the first data signal to be written to the first pixel during the unique horizontal period, and (ii) supplying the display data to a display driver, the unique horizontal period being a first horizontal period for one of the driving signals supplied to respective storage capacitor bus lines which first horizontal period occurs a first number of horizontal periods after an initial horizontal period included in a given cyclic term for either or both of a binary level, the given cyclic term being a second cyclic term for the driving signals which second cyclic term occurs a second number of cyclic terms after a first cyclic term including a horizontal period during which the data signals start to be writte
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: December 10, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroto Suzuki, Fumikazu Shimoshikiryoh, Masae Kawabata, Kentarou Irie, Toshikazu Tsuchiya
  • Publication number: 20130321384
    Abstract: A display device includes first and second display pixels connected to a first source line, third and fourth display pixels connected to the second source line. The device further includes a receiver receiving display voltage for each display pixel, a calculator calculating first difference voltage between the display voltages of the first and second display pixels, and calculating a second difference voltage between the display voltages of the third and fourth display pixels. A parasitic capacitance is generated between the first display pixel and each source line and between the third display pixel and each source line. The display device further includes a generator correcting the first display voltage based on the first and second difference voltages and generating first write voltage for the first display pixel, and correcting the third display voltage based on the second difference voltage and generating third write voltage for the third display pixel.
    Type: Application
    Filed: February 10, 2012
    Publication date: December 5, 2013
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Toshikazu Tsuchiya, Masae Kitayama, Fumikazu Shimoshikiryoh
  • Publication number: 20130308965
    Abstract: An image forming apparatus includes a rotatable member which is provided on and rotatable about a rotation shaft in a detachably mountable developing unit containing a developer and has flexibility so that it is flexed depending on a resistance of the developer; an electroconductive member to be detected which is provided on the rotatable member; a detecting electrode provided in a neighborhood of an outer wall surface of a bottom of the developing unit; a converting portion for detecting an electrostatic capacity between the member to be detected and the detecting electrode and for converting the electrostatic capacity into an electric signal; a measuring portion for measuring a time duration in which the electric signal converted by the converting portion exceeds a predetermined threshold; and a discriminating portion for discriminating an amount of the developer on the basis of the time duration measured by the measuring portion.
    Type: Application
    Filed: March 29, 2012
    Publication date: November 21, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toshikazu Tsuchiya, Masafumi Monde, Hidetoshi Hanamoto, Tsutomu Ishida, Shinji Hosoya
  • Publication number: 20130266330
    Abstract: An image forming apparatus includes a developing unit for accommodating a developer; a ratatable member for paddling in the developing unit, wherein the paddling member includes a pressure-applying portion for applying pressure to a wall surface perpendicular to a rotational axis direction; a pressure-detecting portion for detecting the pressure applied by the pressure-applying portion of the ratatable member, wherein the pressure-detecting portion is provided on the wall surface perpendicular to the rotational axis direction of the ratatable member in the developing unit; and a discriminating portion for discriminating an amount of the developer in the developing unit on the basis of a detection result of the pressure-detecting portion.
    Type: Application
    Filed: March 2, 2012
    Publication date: October 10, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masafumi Monde, Toshikazu Tsuchiya, Hidetoshi Hanamoto, Tsutomu Ishida
  • Publication number: 20130223857
    Abstract: The image forming apparatus includes a developing unit adapted to contain a developer a member adapted to perform a circumduction motion in the developing unit and a detection unit installed on an internal surface of the developing unit and adapted to detect a signal corresponding to pressure in the developing unit which varies with the circumduction motion of the member. An amount of the developer can be determined based on the detected pressure.
    Type: Application
    Filed: November 18, 2011
    Publication date: August 29, 2013
    Inventors: Toshikazu Tsuchiya, Masafumi Monde, Hidetoshi Hanamoto, Tsutomu Ishida
  • Patent number: 8477170
    Abstract: The image forming apparatus includes a video controller unit that receives image information to convert the image information into an image signal for image formation, an engine controller unit that controls image formation, a laser driver unit that emits a laser beam, and a plurality of signal lines that connect the video controller unit, the engine controller unit, and the laser driver unit to each other, wherein the laser driver unit detects the laser beam emitted from the illumination element and generates a horizontal synchronization signal which is electrically transmitted via any one of the plurality of signal lines and used as the reference of an image writing timing in response to the detection. Among the signal lines, a signal line for transmitting the image signal or a control signal electrically and a signal line for electrically transmitting the horizontal synchronization signal are used as a common signal line.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: July 2, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshikazu Tsuchiya
  • Patent number: 8385857
    Abstract: A wireless communication apparatus configured to amplify a transmission signal at an amplifier and transmit the amplified transmission signal, the wireless communication apparatus includes a memory configured to store a distortion compensation coefficient for compensating a distortion characteristic of the amplifier, and an electrical-power measuring unit configured to measure electrical power of the transmission signal. The wireless communication apparatus includes a gain control unit configured to calculate a gain adjustment value for correcting the distortion compensation coefficient stored in the memory based on a power value measured by the electrical-power measuring unit, and a distortion-compensation processing unit configured to perform distortion compensation on the transmission signal based on the distortion compensation coefficient stored in the memory and the gain adjustment value.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: February 26, 2013
    Assignee: Fujitsu Limited
    Inventors: Kenji Suzuki, Toshikazu Tsuchiya, Michiko Satou
  • Publication number: 20130039670
    Abstract: A developing unit includes a developer storage unit, a developer bearing member, an agitation member, a flexible member, and a magnet member. The developer storage unit stores a developer. The developer bearing member develops an electrostatic latent image formed on an image bearing member with the developer. The agitation member agitates the developer in the developer storage unit. The flexible member, disposed in the developer storage unit, is distorted by pressure applied by the agitation member via the developer. The magnet member, disposed on the flexible member, is displaced in response to the flexible member being distorted.
    Type: Application
    Filed: July 24, 2012
    Publication date: February 14, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinji Hosoya, Toshikazu Tsuchiya, Hidetoshi Hanamoto, Tsutomu Ishida, Taku Fukita, Hidehiro Ushiozu
  • Patent number: 8299745
    Abstract: A driving control apparatus for a stepping motor is provided by which the productivity is improved while keeping the driving performance of the motor at a required level. To accomplish this, a driving control apparatus of the present invention drives a stepping motor by switching an excitation current supplied to a coil of a predetermined phase between a first excitation current value, a second excitation current value greater than the first excitation current value, and a third excitation current value still greater than the second excitation current value. In a first mode for generating a first driving force by the stepping motor, the first through third excitation current values are sequentially switched, whereas in a second mode for generating a second driving force smaller than the first driving force, the first and second excitation current values are sequentially switched.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: October 30, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshikazu Tsuchiya
  • Publication number: 20120148271
    Abstract: A toner container includes a toner accommodating portion: a rotatable toner stirring member; a sensor for detecting a remaining amount of the toner; wherein the sensor includes a first flexible sheet portion, a second sheet portion, a first opening, a first electroconductive portion, a second electroconductive portion, wherein the first sheet portion flexes by a stirring operation of the stirring member, and the first electroconductive portion is contacted to the second electroconductive portion, by which the remaining toner amount is detectable, and wherein the toner accommodating portion is provided with a second opening for communicating the first opening and an outside of the toner accommodating portion with each other.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 14, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Taku Fukita, Toshikazu Tsuchiya, Masafumi Monde, Hidetoshi Hanamoto, Tsutomu Ishida
  • Publication number: 20110261266
    Abstract: Provided is a data processing apparatus including a correction circuit. In at least one embodiment, the data correction circuit acquires pixel data of a first pixel for display of a first color component and pixel data of a second pixel for display of a second color component, the second pixel being driven by a scanning signal line which drives the first pixel and being driven by a data signal line which is adjacent to the first pixel, and corrects the pixel data of the second pixel in accordance with a relationship between a value of the pixel data of the first pixel and a value of the pixel data of the second pixel. Thus, it is possible to cause a liquid crystal driving panel to perform uniform display without causing display unevenness even in a case where a halftone of a specific color component is uniformly displayed.
    Type: Application
    Filed: June 5, 2009
    Publication date: October 27, 2011
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Toshikazu Tsuchiya, Masae Kawabata, Fumikazu Shimoshikiryoh
  • Publication number: 20110221970
    Abstract: At least one embodiment of a liquid crystal display device including: scanning signal lines provided in a display area; and a dummy scanning signal line provided in a non-display area, the scanning signal lines being divided into groups each of which includes a plurality of scanning signal lines, the groups being sequentially selected, signal electric potentials of an identical polarity being sequentially supplied to a data signal line while scanning signal lines belonging to a selected group are sequentially scanned horizontally, the polarity of the signal electric potentials being inverted when the selected group is changed from a preceding group to a succeeding group which is selected immediately after the preceding group, a dummy scanning period being inserted between a horizontal scanning period corresponding to last horizontal scanning in the preceding group and a horizontal scanning period corresponding to first horizontal scanning in the succeeding group, and the dummy scanning signal line being subje
    Type: Application
    Filed: October 5, 2009
    Publication date: September 15, 2011
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Masae Kawabata, Fumikazu Shimoshikiryoh, Toshikazu Tsuchiya
  • Publication number: 20110149165
    Abstract: The present invention has as an object to reduce display unevenness that occurs under the influence of a coupling between a first pixel in which a green component is displayed and a data signal line by which second pixel is driven. The present invention includes a correction process section (21) for obtaining pixel data on a second pixel in which a blue component or a red component is displayed, the second pixel being driven by a data signal line adjacent to a first pixel in which a green component is displayed, and for, if the pixel data on the second pixel represents a tone value falling within a range of 0 to a predetermined first value, correcting the tone value to be the first value.
    Type: Application
    Filed: June 24, 2009
    Publication date: June 23, 2011
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Toshikazu Tsuchiya, Masae Kawabata, Fumikazu Shimoshikiryoh
  • Publication number: 20110122163
    Abstract: A display device of at least one embodiment of the present invention includes at least one correcting device for, in a case where a first data signal is to be written to a first pixel during a unique horizontal period, (i) carrying out a first gray scale correction with respect to display data corresponding to the first data signal to be written to the first pixel during the unique horizontal period, and (ii) supplying the display data to a display driver, the unique horizontal period being a first horizontal period for one of the driving signals supplied to respective storage capacitor bus lines which first horizontal period occurs a first number of horizontal periods after an initial horizontal period included in a given cyclic term for either or both of a binary level, the given cyclic term being a second cyclic term for the driving signals which second cyclic term occurs a second number of cyclic terms after a first cyclic term including a horizontal period during which the data signals start to be writte
    Type: Application
    Filed: June 24, 2009
    Publication date: May 26, 2011
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hiroto Suzuki, Fumikazu Shimoshikiryoh, Masae Kawabata, Kentarou Irie, Toshikazu Tsuchiya
  • Publication number: 20110124304
    Abstract: A transmission apparatus performs distortion compensation on a power amplifier using a distortion compensator that includes an adaptive equalizer. The transmission apparatus includes a filter coefficient storage unit that stores filter coefficients that are each set in a digital filter of the adaptive equalizer; a filter coefficient setting unit that selects a filter coefficient from the filter coefficient storage unit according to a feedback signal from the power amplifier; an adjustment value storage unit that stores adjustment values in association with transmission frequencies, the adjustment values each being used by the filter coefficient setting unit to select the filter coefficient; and an initial value setting unit that reads an adjustment value corresponding to a transmission frequency, which is set in the transmission apparatus, from the adjustment value storage unit and sets the read adjustment value as an initial value of the adjustment value used for selecting the filter coefficient.
    Type: Application
    Filed: January 31, 2011
    Publication date: May 26, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Toshikazu Tsuchiya, Kenji Suzuki, Michiko Satou, Akira Toyomane
  • Publication number: 20100304694
    Abstract: A wireless communication apparatus configured to amplify a transmission signal at an amplifier and transmit the amplified transmission signal, the wireless communication apparatus includes a memory configured to store a distortion compensation coefficient for compensating a distortion characteristic of the amplifier, and an electrical-power measuring unit configured to measure electrical power of the transmission signal. The wireless communication apparatus includes a gain control unit configured to calculate a gain adjustment value for correcting the distortion compensation coefficient stored in the memory based on a power value measured by the electrical-power measuring unit, and a distortion-compensation processing unit configured to perform distortion compensation on the transmission signal based on the distortion compensation coefficient stored in the memory and the gain adjustment value.
    Type: Application
    Filed: May 14, 2010
    Publication date: December 2, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Kenji Suzuki, Toshikazu Tsuchiya, Michiko Satou
  • Publication number: 20100272485
    Abstract: A driving control apparatus for a stepping motor is provided by which the productivity is improved while keeping the driving performance of the motor at a required level. To accomplish this, a driving control apparatus of the present invention drives a stepping motor by switching an excitation current supplied to a coil of a predetermined phase between a first excitation current value, a second excitation current value greater than the first excitation current value, and a third excitation current value still greater than the second excitation current value. In a first mode for generating a first driving force by the stepping motor, the first through third excitation current values are sequentially switched, whereas in a second mode for generating a second driving force smaller than the first driving force, the first and second excitation current values are sequentially switched.
    Type: Application
    Filed: April 14, 2010
    Publication date: October 28, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Toshikazu Tsuchiya
  • Publication number: 20100123931
    Abstract: The image forming apparatus includes a video controller unit that receives image information to convert the image information into an image signal for image formation, an engine controller unit that controls image formation, a laser driver unit that emits a laser beam, and a plurality of signal lines that connect the video controller unit, the engine controller unit, and the laser driver unit to each other, wherein the laser driver unit detects the laser beam emitted from the illumination element and generates a horizontal synchronization signal which is electrically transmitted via any one of the plurality of signal lines and used as the reference of an image writing timing in response to the detection. Among the signal lines, a signal line for transmitting the image signal or a control signal electrically and a signal line for electrically transmitting the horizontal synchronization signal are used as a common signal line.
    Type: Application
    Filed: November 16, 2009
    Publication date: May 20, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Toshikazu Tsuchiya