Patents by Inventor Masayoshi Todorokihara
Masayoshi Todorokihara 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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Patent number: 8508213Abstract: A frequency measurement device for measuring a frequency of a signal to be measured including a pulse signal, includes: a signal multiplier section that multiplies the signal to be measured by n (n is an integer) and outputs a multiplied signal; a counter section that counts the multiplied signal with a predetermined gate time and outputs a count value of the frequency of the signal to be measured at a predetermined period; and a low-pass filter that outputs a signal corresponding to the frequency of the signal to be measured based on the count value outputted at the predetermined period.Type: GrantFiled: May 18, 2010Date of Patent: August 13, 2013Assignee: Seiko Epson CorporationInventor: Masayoshi Todorokihara
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Patent number: 8461821Abstract: A frequency measuring apparatus includes: a high-order digit calculation section adapted to measure an input signal and output a high-order digit value of a frequency value of the input signal; a low-order digit calculation section adapted to measure the input signal and output a low-order digit value of the frequency value of the input signal; and an adding section adapted to add the high-order digit value and the low-order digit value to each other to output the frequency value of the input signal.Type: GrantFiled: May 20, 2010Date of Patent: June 11, 2013Assignee: Seiko Epson CorporationInventor: Masayoshi Todorokihara
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Publication number: 20120053903Abstract: A frequency measurement device includes: a reference signal source generating a reference signal; a frequency divider/multiplier section generating a frequency division/multiplication reference signal obtained by dividing or multiplying the reference signal by a prescribed frequency division or multiplication ratio; a first counter section outputting a first count value obtained by measuring the edge of the measurement signal observed within a prescribed period determined based on the frequency division/multiplication reference signal; a first low-pass filter removing a high-frequency component included in the first count value; a coefficient deriving section deriving a conversion coefficient based on the frequency division or multiplication ratio; and a conversion section multiplying an output value of the first low-pass filter by the conversion coefficient or the reciprocal of the conversion coefficient.Type: ApplicationFiled: August 17, 2011Publication date: March 1, 2012Applicant: SEIKO EPSON CORPORATIONInventor: Masayoshi TODOROKIHARA
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Publication number: 20110309821Abstract: A frequency measuring device according to an embodiment of the invention includes a first resonator provided with a first adsorption film, a second resonator provided with a second adsorption film, a first oscillation circuit which is connected to the first resonator and is provided with a first frequency regulator that can regulate the frequency of a first oscillation signal and output the first oscillation signal, a second oscillation circuit which is connected to the second resonator and is provided with a second frequency regulator that can regulate the frequency of a second oscillation signal and output the second oscillation signal, a measuring circuit which can measure the frequencies of the first oscillation signal and the second oscillation signal, and a control circuit which can control the first frequency regulator and the second frequency regulator.Type: ApplicationFiled: June 13, 2011Publication date: December 22, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Takayuki KONDO, Masayoshi TODOROKIHARA
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Patent number: 7986017Abstract: A semiconductor sensor includes: a semiconductor substrate; a plurality of piezoelectric thin films layered on the semiconductor substrate, the plurality of piezoelectric thin films including at least a pair of the piezoelectric thin films layered above and below; a pair of electrodes that are formed at an interface of at least the pair of the piezoelectric thin films layered above and below and excite surface acoustic waves; a thin film directly under a lowest-layer piezoelectric film of the piezoelectric thin films; a metal thin film that is formed at an interface of the lowest-layer piezoelectric thin film and the thin film, and facilitate a growth of a ridge-and-valley portion on a surface of an uppermost-layer piezoelectric thin film of the piezoelectric thin films; and a sensitive film for molecular adsorption formed on at least the ridge-and-valley portion on the uppermost-layer piezoelectric thin film.Type: GrantFiled: November 22, 2010Date of Patent: July 26, 2011Assignee: Seiko Epson CorporationInventors: Teruo Takizawa, Takayuki Kondo, Masayoshi Todorokihara
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Publication number: 20110084687Abstract: A signal generation circuit includes: a first signal source that generates a first signal; and a variable rate frequency divider section that generates a variable rate frequency-divided signal in which a first frequency-divided signal obtained by frequency-dividing the first signal by a first frequency dividing ratio and a second frequency-divided signal obtained by frequency-dividing the first signal by a second frequency dividing ratio temporally alternately appear in a specified mixing ratio.Type: ApplicationFiled: September 24, 2010Publication date: April 14, 2011Applicant: SEIKO EPSON CORPORATIONInventor: Masayoshi TODOROKIHARA
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Publication number: 20110082656Abstract: A frequency measurement device includes: a counter section that counts a supplied pulse stream signal to be measured at a predetermined time interval and outputs a stream of count values corresponding to the frequency of the signal to be measured; and a low-pass filter section that performs a filtering process on the stream of count values, the low-pass filter section including moving average filters in multiple stages, and an output of at least one moving average filter among the moving average filters in multiple stages is downsampled.Type: ApplicationFiled: October 1, 2010Publication date: April 7, 2011Applicant: SEIKO EPSON CORPORATIONInventor: Masayoshi TODOROKIHARA
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Publication number: 20110067484Abstract: A semiconductor sensor includes: a semiconductor substrate; a plurality of piezoelectric thin films layered on the semiconductor substrate, the plurality of piezoelectric thin films including at least a pair of the piezoelectric thin films layered above and below; a pair of electrodes that are formed at an interface of at least the pair of the piezoelectric thin films layered above and below and excite surface acoustic waves; a thin film directly under a lowest-layer piezoelectric film of the piezoelectric thin films; a metal thin film that is formed at an interface of the lowest-layer piezoelectric thin film and the thin film, and facilitate a growth of a ridge-and-valley portion on a surface of an uppermost-layer piezoelectric thin film of the piezoelectric thin films; and a sensitive film for molecular adsorption formed on at least the ridge-and-valley portion on the uppermost-layer piezoelectric thin film.Type: ApplicationFiled: November 22, 2010Publication date: March 24, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Teruo TAKIZAWA, Takayuki KONDO, Masayoshi TODOROKIHARA
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Patent number: 7907156Abstract: A display device for an active matrix drive includes a plurality of pixels each having display retainability and including a first sub-pixel through an nth sub-pixel (n is a natural number greater than 1), a selection switching element provided correspondingly to each of the sub-pixels, connected to a data line, and for selecting the corresponding sub-pixel, and an external input switch provided correspondingly to each of the sub-pixels, connected to a selection line, and for supplying a signal from the selection line to the corresponding sub-pixel in response to an input operation from the outside. The selection line includes n kinds of selection lines, from a first selection line connected to the first sub-pixel to an nth selection line connected to the nth sub-pixel, and the n kinds of selection lines are connected to selection switches for one of selecting the selection lines individually and selecting two or more of the selection lines in a lump.Type: GrantFiled: January 29, 2008Date of Patent: March 15, 2011Assignee: Seiko Epson CorporationInventors: Masayoshi Todorokihara, Eiju Hirai, Yuko Komatsu
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Publication number: 20110050352Abstract: An electric circuit includes: a reference signal generation circuit that generates a reference signal based on a first oscillation signal that is an oscillation signal of a first oscillation circuit that vibrates a first vibrator; and a counter circuit that counts a second oscillation signal that is an oscillation signal of a second oscillation circuit that vibrates a second vibrator based on the reference signal, and outputs a count signal, wherein the count signal is a change of the count value in the second oscillation signal.Type: ApplicationFiled: July 13, 2010Publication date: March 3, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Takayuki Kondo, Masayoshi Todorokihara, Yoshihiko Nimura, Takeo Kawase
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Patent number: 7863696Abstract: A semiconductor sensor includes: a semiconductor substrate; a plurality of piezoelectric thin films layered on the semiconductor substrate, the plurality of piezoelectric thin films including at least a pair of the piezoelectric thin films layered above and below; a pair of electrodes that are formed at an interface of at least the pair of the piezoelectric thin films layered above and below and excite surface acoustic waves; a thin film directly under a lowest-layer piezoelectric film of the piezoelectric thin films; a metal thin film that is formed at an interface of the lowest-layer piezoelectric thin film and the thin film, and facilitate a growth of a ridge-and-valley portion on a surface of an uppermost-layer piezoelectric thin film of the piezoelectric thin films; and a sensitive film for molecular adsorption formed on at least the ridge-and-valley portion on the uppermost-layer piezoelectric thin film.Type: GrantFiled: December 17, 2008Date of Patent: January 4, 2011Assignee: Seiko Epson CorporationInventors: Teruo Takizawa, Takayuki Kondo, Masayoshi Todorokihara
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Publication number: 20100295535Abstract: A frequency measurement device for measuring a frequency of a signal to be measured including a pulse signal, includes: a signal multiplier section that multiplies the signal to be measured by n is an integer) and outputs a multiplied signal; a counter section that counts the multiplied signal with a predetermined gate time and outputs a count value of the frequency of the signal to be measured at a predetermined period; and a low-pass filter that outputs a signal corresponding to the frequency of the signal to be measured based on the count value outputted at the predetermined period.Type: ApplicationFiled: May 18, 2010Publication date: November 25, 2010Applicant: SEIKO EPSON CORPORATIONInventor: Masayoshi TODOROKIHARA
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Publication number: 20100295537Abstract: A frequency measuring apparatus includes: a high-order digit calculation section adapted to measure an input signal and output a high-order digit value of a frequency value of the input signal; a low-order digit calculation section adapted to measure the input signal and output a low-order digit value of the frequency value of the input signal; and an adding section adapted to add the high-order digit value and the low-order digit value to each other to output the frequency value of the input signal.Type: ApplicationFiled: May 20, 2010Publication date: November 25, 2010Applicant: SEIKO EPSON CORPORATIONInventor: Masayoshi TODOROKIHARA
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Publication number: 20100295536Abstract: A frequency measuring apparatus includes: a counter section adapted to count a signal including a pulse signal for a predetermined time period, and output a binary count value corresponding to a frequency of the signal including the pulse signal; and a low pass filter section adapted to perform a filtering process on the count value, wherein the low pass filter section includes a first stage filter and a second stage filter, the first stage filter is a moving average filter to which the count value is input, and which provides a binary output with a high-frequency component reduced, and the second stage filter performs an average value calculation on the binary output to provide an output with the high-frequency component reduced.Type: ApplicationFiled: May 20, 2010Publication date: November 25, 2010Applicant: SEIKO EPSON CORPORATIONInventor: Masayoshi TODOROKIHARA
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Patent number: 7781964Abstract: An organic electroluminescent device includes a substrate that is conductive at least on a first surface; a first insulating film located on the first surface of the substrate and including a portion of a first opening, a portion of a second opening, and a portion of a third opening; a semiconductor film located on the first insulating film and receiving a current from the first surface of the substrate via the portion of a first opening; a second insulating film located on the semiconductor film and in contact with the substrate via the portion of a second opening; a capacitance electrode located on the second insulating film; a gate electrode located on the second insulating film and overlapping the semiconductor film; an intermediate insulating film located on the gate electrode and capacitance electrode; a pixel electrode located on the intermediate insulating film and receiving a current via the semiconductor film; a light-emitting layer located on the pixel electrode; a common electrode located on the lType: GrantFiled: March 12, 2007Date of Patent: August 24, 2010Assignee: Seiko Epson CorporationInventors: Hiroyuki Hara, Sumio Utsunomiya, Daisuke Abe, Masayoshi Todorokihara, Kazuyuki Miyashita
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Patent number: 7616375Abstract: A display device of active matrix driving type has a plurality of pixel regions arranged in a plane, each of the pixel regions including a selection switching element that controllably switches a supply of a signal to the each of the pixel regions, a pressure sensitive switching element that controllably switches a supply of a signal to the each of the pixel regions in response to an input of an external pressure, and a retention capacitance that retains a signal supplied to the each of the pixel regions, wherein the pressure sensitive switching element includes a semiconductor layer having a channel region, and a piezoelectric film laminated on the channel region, and the retention capacitance includes a pair of capacitance electrodes and a ferroelectric film sandwiched between the pair of capacitance electrodes.Type: GrantFiled: January 21, 2008Date of Patent: November 10, 2009Assignee: Seiko Epson CorporationInventors: Eiju Hirai, Masayoshi Todorokihara, Yuko Komatsu
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Publication number: 20090251129Abstract: A frequency measurement device includes: a short gate time counter section that continuously measures a pulse stream signal supplied, and outputs a series of count values that behave like a pulse stream corresponding to a frequency of the pulse stream signal; and a low-pass filter that removes high frequency components from the series of count values to obtain a level signal corresponding to the frequency of the pulse stream signal supplied.Type: ApplicationFiled: April 3, 2009Publication date: October 8, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Masayoshi Todorokihara, Takayuki Kondo
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Publication number: 20090192958Abstract: A parallel processing device that computes a hierarchical neural network, the parallel processing device includes: a plurality of units that are identified by characteristic unit numbers that are predetermined identification numbers, respectively; a distribution control section that, in response to input as an input value of an output value outputted from one of the plurality of units through a unit output bus, outputs control data including the input value inputted and a selection unit number that is an identification number to select one unit among the plurality of units to the plurality of units through the unit input bus; and a common storage section that stores in advance coupling weights in a plurality of layers of the hierarchical neural network, the coupling weights being shared by plural ones of the plurality of units.Type: ApplicationFiled: January 23, 2009Publication date: July 30, 2009Applicant: SEIKO EPSON CORPORATIONInventor: Masayoshi TODOROKIHARA
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Publication number: 20090184381Abstract: A semiconductor sensor includes: a semiconductor substrate; a plurality of piezoelectric thin films layered on the semiconductor substrate, the plurality of piezoelectric thin films including at least a pair of the piezoelectric thin films layered above and below; a pair of electrodes that are formed at an interface of at least the pair of the piezoelectric thin films layered above and below and excite surface acoustic waves; a thin film directly under a lowest-layer piezoelectric film of the piezoelectric thin films; a metal thin film that is formed at an interface of the lowest-layer piezoelectric thin film and the thin film, and facilitate a growth of a ridge-and-valley portion on a surface of an uppermost-layer piezoelectric thin film of the piezoelectric thin films; and a sensitive film for molecular adsorption formed on at least the ridge-and-valley portion on the uppermost-layer piezoelectric thin film.Type: ApplicationFiled: December 17, 2008Publication date: July 23, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Teruo Takizawa, Takayuki Kondo, Masayoshi Todorokihara
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Patent number: 7557984Abstract: An electrophoretic display device, includes: an electrophoretic capacitor provided with an electrophoretic layer containing at least one kind of electrophoretic particle; and a ferroelectric capacitor provided with a ferroelectric layer containing a ferroelectric material. In the electrophoretic display device, the electrophoretic particle is allowed to move to conduct a display and thus a polarity of the ferroelectric layer is inverted by a current supply to the electrophoretic capacitor and the ferroelectric capacitor that are electrically connected with each other, and the display can be retained due to a remanent polarization of the ferroelectric layer even after the current supply is stopped.Type: GrantFiled: April 22, 2008Date of Patent: July 7, 2009Assignee: Seiko Epson CorporationInventors: Junichi Karasawa, Masayoshi Todorokihara