Patents by Inventor Yoshikazu Yamazaki

Yoshikazu Yamazaki 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: 20120206197
    Abstract: A differential amplifier amplifies the difference between a signal input to the non-inverting terminal via a capacitor and a signal input to the inverting terminal. A switch switches whether to input the signal to the non-inverting terminal via the capacitor. A resistance is connected between the non-inverting terminal and the inverting terminal. An offset voltage corrector corrects the offset voltage of the differential amplifier based on the output signal of the differential amplifier during a correction period in which the switch is controlled not to input the signal to the non-inverting terminal via the capacitor.
    Type: Application
    Filed: January 23, 2012
    Publication date: August 16, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yoshikazu Yamazaki
  • Publication number: 20120094090
    Abstract: Provided is a low-cost method for easily forming a transparent conductive pattern that has a low electrical resistance and high transparency, and that is highly invisible to the eye.
    Type: Application
    Filed: June 29, 2010
    Publication date: April 19, 2012
    Applicant: DIC CORPORATION
    Inventors: Yoshikazu Yamazaki, Satoshi Hayakawa, Masashi Miyamoto
  • Patent number: 8159784
    Abstract: The magnetic recording medium of the present invention has a pattern formed using a pattern-forming agent in a laminate of multiple layers including a base material and a magnetic recoding layer, wherein the pattern is recognized on the surface of the laminate opposite to the base material, and the pattern-forming agent is distributed through the thickness of the laminate, wherein a region between the center of the magnetic recording layer and a magnetic recording-reading side of the laminate has an area having a density gradient of the pattern-forming agent which gradually declines in the direction from the center of the magnetic recording layer to the magnetic recording-reading side.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: April 17, 2012
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Yoshikazu Yamazaki, Daisuke Yano
  • Publication number: 20120050560
    Abstract: A photoelectric conversion apparatus includes signal processing units that are provided in correspondence with columns of a pixel array and that have at least a plurality of analog-to-digital converters that convert signals output from pixels into digital signals, an output unit configured to have two or more output terminals and include a plurality of output blocks provided in correspondence with the output terminals, and a synchronizing signal generating unit configured to output a synchronizing signal. Signal processing units in a plurality of columns that are adjacent to one another or in every other column are arranged as a block. The plurality of output blocks output signals output from a plurality of signal processing units that belong to the block. A synchronizing code adding unit configured to synchronize with the synchronizing signal and add synchronizing codes to the signals output from the plurality of output blocks is further included.
    Type: Application
    Filed: August 23, 2011
    Publication date: March 1, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Daisuke Kobayashi, Yoshikazu Yamazaki
  • Publication number: 20120050593
    Abstract: A photoelectric conversion apparatus includes signal processing units having a plurality of analog-to-digital converters, a first output unit having a plurality of first output terminals and include first output blocks provided in correspondence with the first output terminals, and a second output unit having one or more second output terminals and include second output blocks provided in correspondence with the second output terminals.
    Type: Application
    Filed: August 23, 2011
    Publication date: March 1, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Daisuke Kobayashi, Yoshikazu Yamazaki
  • Patent number: 8085098
    Abstract: A PLL circuit comprising an oscillation unit, a frequency division unit, a phase comparison unit, and a generation unit comprises a switching unit that switches between a first state in which a control voltage output from the generation unit is input into the oscillation unit and a second state in which a reference voltage is input into the oscillation unit; and a correction unit that, in the second state, compares the control voltage output from the generation unit with the reference voltage, and corrects a frequency at which the oscillation unit oscillates with respect to a voltage input into the oscillation unit, such that the control voltage output from the generation unit is equivalent to the reference voltage.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: December 27, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshikazu Yamazaki
  • Publication number: 20110158299
    Abstract: Parallel/serial conversion is performed on an N (where N is a natural number)-bit first parallel data signal with a first converted clock acquired by multiplying a reference clock by N, and parallel/serial conversion is performed on an (N×K)-bit (where K is a natural number) second parallel data signal with a second converted clock acquired by multiplying the reference clock by N×K.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 30, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yoshikazu Yamazaki
  • Publication number: 20110133800
    Abstract: A charge pumping circuit comprises: a charging pump capacitance; a charging unit; a discharging unit; a detection resistor having one terminal and the other terminal, the one terminal being connected between a first node and a second node in a second mode; a voltage source for supplying a reference voltage to the other terminal of the detection resistor; a correction unit for correcting a charging current output from the charging unit and a discharging current that is to be sunk by the discharging unit to equalize the charging current and the discharging current in the second mode, based on a difference between a voltage of the one terminal of the detection resistor and the reference voltage when the charging unit outputs the charging current to the one terminal of the detection resistor and the discharging unit sinks the discharging current from the one terminal of the detection resistor.
    Type: Application
    Filed: February 15, 2011
    Publication date: June 9, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yoshikazu Yamazaki
  • Patent number: 7906998
    Abstract: A charge pumping circuit comprises: a charging pump capacitance; a charging unit; a discharging unit; a detection resistor having one terminal and the other terminal, the one terminal being connected between a first node and a second node in a second mode; a voltage source for supplying a reference voltage to the other terminal of the detection resistor; a correction unit for correcting a charging current output from the charging unit and a discharging current that is to be sunk by the discharging unit to equalize the charging current and the discharging current in the second mode, based on a difference between a voltage of the one terminal of the detection resistor and the reference voltage when the charging unit outputs the charging current to the one terminal of the detection resistor and the discharging unit sinks the discharging current from the one terminal of the detection resistor.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: March 15, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshikazu Yamazaki
  • Publication number: 20110045319
    Abstract: Subject: A process for producing a magnetic recording medium, having a magnetic recording layer and a protective layer on a substrate which is a non-magnetic support, wherein the medium is able to greatly inhibit migration of a lubricant from the protective layer to the surface of the metal pressing plate having a mirrored finish in a hot pressing step during production of the magnetic recording medium, while maintaining satisfactory scratch resistance, suitable adhesion with the magnetic recording layer and the protective layer, and excellent read and write properties of the magnetic recording medium.
    Type: Application
    Filed: January 20, 2009
    Publication date: February 24, 2011
    Applicant: DIC CORPORATION
    Inventors: Satoshi Hayakawa, Daisuke Yano, Yoshikazu Yamazaki
  • Patent number: 7734940
    Abstract: A data communication device performs stable data communications without a malfunction in a system downsized by realizing bi-directional data communications using two terminals. The data communication device includes: a signal terminal (IN) for inputting a received signal having portions of different duty ratios and a constant pulse frequency; a reference voltage terminal (GND) for inputting a first reference voltage; a clock generation circuit for generating a clock signal according to the received signal; a data signal generation circuit for generating a data signal by identifying a duty ratio of the received signal; a transmission circuit for outputting a transmission signal to the signal terminal; and a regulator circuit for generating power supply voltages of the clock generation circuit, the data signal generation circuit, and the transmission circuit on a basis of an internally generated second reference voltage, the received signal, and the first reference voltage.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: June 8, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshikazu Yamazaki
  • Publication number: 20100116891
    Abstract: To provide a card-like magnetic recording medium and a transferable laminate which can make a hologram distinctly recognizable and can prevent the occurrence of an ESD fault. In the card-like magnetic recording medium, on the magnetic recording layer 12 formed on the base material for a card 20, the transparent non-conductive deposited layer 14 and the transparent optical diffraction layer 15 are laminated in this order; between the magnetic recording layer 12 and the transparent non-conductive deposited layer 14, a reflective ink layer 13 which includes, at least, binder resin and metal flake, is formed; and a mass ratio of this binder resin/metal flake is set from 3 to 10.
    Type: Application
    Filed: March 25, 2008
    Publication date: May 13, 2010
    Applicant: DIC CORPORATION
    Inventors: Daisuke Yano, Yoshikazu Yamazaki
  • Publication number: 20100097126
    Abstract: A charge pumping circuit comprises: a charging pump capacitance; a charging unit; a discharging unit; a detection resistor having one terminal and the other terminal, the one terminal being connected between a first node and a second node in a second mode; a voltage source for supplying a reference voltage to the other terminal of the detection resistor; a correction unit for correcting a charging current output from the charging unit and a discharging current that is to be sunk by the discharging unit to equalize the charging current and the discharging current in the second mode, based on a difference between a voltage of the one terminal of the detection resistor and the reference voltage when the charging unit outputs the charging current to the one terminal of the detection resistor and the discharging unit sinks the discharging current from the one terminal of the detection resistor.
    Type: Application
    Filed: September 16, 2009
    Publication date: April 22, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yoshikazu Yamazaki
  • Publication number: 20100090768
    Abstract: A PLL circuit comprising an oscillation unit, a frequency division unit, a phase comparison unit, and a generation unit comprises a switching unit that switches between a first state in which a control voltage output from the generation unit is input into the oscillation unit and a second state in which a reference voltage is input into the oscillation unit; and a correction unit that, in the second state, compares the control voltage output from the generation unit with the reference voltage, and corrects a frequency at which the oscillation unit oscillates with respect to a voltage input into the oscillation unit, such that the control voltage output from the generation unit is equivalent to the reference voltage.
    Type: Application
    Filed: September 15, 2009
    Publication date: April 15, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yoshikazu Yamazaki
  • Patent number: 7664168
    Abstract: The present invention has an object enabling stable data communication hard to perform a malfunction in a simple circuit configuration which can miniaturize a system and does not need any strict accuracy by executing data communication in a connection using two terminals or less. The present invention is featured by being related to a data carrier device including a signal terminal for performing signal input from a data carrier driving device. The data carrier device includes a data communication circuit receiving an input of a pulse having a part having a different duty ratio and a pulse frequency constant on the whole from the data carrier driving device through the signal terminal to generate a data signal.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: February 16, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshikazu Yamazaki
  • Publication number: 20090323785
    Abstract: An object of the present invention is to provide a data communication technique which can reduce a size of a system by enabling bidirectional data communication, and enables a cheap system configuration.
    Type: Application
    Filed: February 19, 2008
    Publication date: December 31, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yoshikazu Yamazaki
  • Publication number: 20090225469
    Abstract: A method of manufacturing a drive apparatus electrically connects a motor and a control circuit board for the motor without causing poor connections. When manufacturing a drive apparatus that rotationally drives a recording medium using a motor, the motor, which is connected in advance to one end of a connection circuit board that connects the motor and a control circuit board for the motor, is attached to a drive apparatus case and then the other end of the connection circuit board is connected to the control circuit board for the motor.
    Type: Application
    Filed: October 3, 2008
    Publication date: September 10, 2009
    Applicant: FUJITSU LIMITED
    Inventor: Yoshikazu Yamazaki
  • Patent number: 7521971
    Abstract: The present invention provides a buffer circuit meeting both of low power consumption requirement and an improvement in slew rate characteristics which are in a relation of trade off. Voltage difference detection circuits are provided for detecting a voltage difference between the input signal at rising and at trailing and an output signal. Based on the voltage difference, voltage-current conversion circuits increase a bias current to be supplied to an output NMOS transistor m1 and a source terminal of an output PMOS transistor constituting an output circuit. And, the voltage difference detection circuits have offset voltages. Only when the voltage difference changes into a level higher than the offset voltage, that is, when the input signal changes abruptly (rise or down), bias current increases.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: April 21, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshikazu Yamazaki
  • Publication number: 20080305365
    Abstract: A card-like magnetic recording medium comprising a non-magnetic substrate and a laminate containing a magnetic recording layer wherein the laminate is placed in at least a portion of the non-magnetic substrate; wherein the laminate comprises a light reflection quantity controlling layer, which includes a binder resin and at least one of a scale-like metal powder and fine flakes obtained from a metallic thin film and is formed on the magnetic recording layer, and further comprises a glistening coating layer which includes glistening particles and is formed on the light reflection quantity controlling layer; and the maximum reflectance of diffuse reflection light with respect to incident lights having a wavelength from 400 to 700 nm is 20 to 70% on a portion where the glistening coating layer is provided.
    Type: Application
    Filed: May 27, 2005
    Publication date: December 11, 2008
    Applicant: DAINIPPON INK AND CHEMICALS, INC.
    Inventors: Yoshikazu Yamazaki, Daisuke Yano
  • Publication number: 20080253255
    Abstract: The magnetic recording medium of the present invention has a pattern formed using a pattern-forming agent in a laminate of multiple layers including a base material and a magnetic recoding layer, wherein the pattern is recognized on the surface of the laminate opposite to the base material, and the pattern-forming agent is distributed through the thickness of the laminate, wherein a region between the center of the magnetic recording layer and a magnetic recording-reading side of the laminate has an area having a density gradient of the pattern-forming agent which gradually declines in the direction from the center of the magnetic recording layer to the magnetic recording-reading side.
    Type: Application
    Filed: June 30, 2005
    Publication date: October 16, 2008
    Applicant: Dainippon Ink and Chemicals, Inc.
    Inventors: Yoshikazu Yamazaki, Daisuke Yano