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).
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Publication number: 20120206197Abstract: 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: ApplicationFiled: January 23, 2012Publication date: August 16, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Yoshikazu Yamazaki
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Publication number: 20120094090Abstract: 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: ApplicationFiled: June 29, 2010Publication date: April 19, 2012Applicant: DIC CORPORATIONInventors: Yoshikazu Yamazaki, Satoshi Hayakawa, Masashi Miyamoto
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Patent number: 8159784Abstract: 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: GrantFiled: June 30, 2005Date of Patent: April 17, 2012Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Yoshikazu Yamazaki, Daisuke Yano
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Publication number: 20120050560Abstract: 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: ApplicationFiled: August 23, 2011Publication date: March 1, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Daisuke Kobayashi, Yoshikazu Yamazaki
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Publication number: 20120050593Abstract: 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: ApplicationFiled: August 23, 2011Publication date: March 1, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Daisuke Kobayashi, Yoshikazu Yamazaki
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Patent number: 8085098Abstract: 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: GrantFiled: September 15, 2009Date of Patent: December 27, 2011Assignee: Canon Kabushiki KaishaInventor: Yoshikazu Yamazaki
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Publication number: 20110158299Abstract: 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: ApplicationFiled: December 7, 2010Publication date: June 30, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Yoshikazu Yamazaki
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Publication number: 20110133800Abstract: 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: ApplicationFiled: February 15, 2011Publication date: June 9, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Yoshikazu Yamazaki
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Patent number: 7906998Abstract: 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: GrantFiled: September 16, 2009Date of Patent: March 15, 2011Assignee: Canon Kabushiki KaishaInventor: Yoshikazu Yamazaki
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Publication number: 20110045319Abstract: 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: ApplicationFiled: January 20, 2009Publication date: February 24, 2011Applicant: DIC CORPORATIONInventors: Satoshi Hayakawa, Daisuke Yano, Yoshikazu Yamazaki
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Patent number: 7734940Abstract: 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: GrantFiled: March 16, 2007Date of Patent: June 8, 2010Assignee: Canon Kabushiki KaishaInventor: Yoshikazu Yamazaki
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Publication number: 20100116891Abstract: 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: ApplicationFiled: March 25, 2008Publication date: May 13, 2010Applicant: DIC CORPORATIONInventors: Daisuke Yano, Yoshikazu Yamazaki
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Publication number: 20100097126Abstract: 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: ApplicationFiled: September 16, 2009Publication date: April 22, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Yoshikazu Yamazaki
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Publication number: 20100090768Abstract: 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: ApplicationFiled: September 15, 2009Publication date: April 15, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Yoshikazu Yamazaki
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Patent number: 7664168Abstract: 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: GrantFiled: November 7, 2005Date of Patent: February 16, 2010Assignee: Canon Kabushiki KaishaInventor: Yoshikazu Yamazaki
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Publication number: 20090323785Abstract: 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: ApplicationFiled: February 19, 2008Publication date: December 31, 2009Applicant: CANON KABUSHIKI KAISHAInventor: Yoshikazu Yamazaki
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Publication number: 20090225469Abstract: 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: ApplicationFiled: October 3, 2008Publication date: September 10, 2009Applicant: FUJITSU LIMITEDInventor: Yoshikazu Yamazaki
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Patent number: 7521971Abstract: 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: GrantFiled: October 2, 2007Date of Patent: April 21, 2009Assignee: Canon Kabushiki KaishaInventor: Yoshikazu Yamazaki
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Publication number: 20080305365Abstract: 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: ApplicationFiled: May 27, 2005Publication date: December 11, 2008Applicant: DAINIPPON INK AND CHEMICALS, INC.Inventors: Yoshikazu Yamazaki, Daisuke Yano
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Publication number: 20080253255Abstract: 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: ApplicationFiled: June 30, 2005Publication date: October 16, 2008Applicant: Dainippon Ink and Chemicals, Inc.Inventors: Yoshikazu Yamazaki, Daisuke Yano