Patents by Inventor Ryuichi Hirayama
Ryuichi Hirayama 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: 20240142471Abstract: Provided is a means for detecting a subject with mild cognitive impairment or assisting in the detection thereof. A biomarker for testing for mild cognitive impairment, comprising Claudin-5.Type: ApplicationFiled: February 9, 2022Publication date: May 2, 2024Inventors: Masuo KONDOH, Keisuke TACHIBANA, Ryuichi HIRAYAMA
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Patent number: 11187931Abstract: There is provided a polymer network liquid crystal display device for image display according to an input image signal. The device includes a determination unit configured to determine whether an image for display according to the image signal is a moving image or a still image, and a correction unit configured to correct a hysteresis of the image for display, based on a result of the determination by the determination unit.Type: GrantFiled: March 20, 2018Date of Patent: November 30, 2021Assignee: TOPPAN PRINTING CO., LTD.Inventor: Ryuichi Hirayama
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Patent number: 11143890Abstract: There is provided a liquid crystal optical modulation device that performs light control drive of a liquid crystal panel, the device including an optical modulation control section that switches and sets a frequency of a drive voltage in the form of a rectangular wave applied to the liquid crystal panel in accordance with a range of the drive voltage.Type: GrantFiled: October 3, 2019Date of Patent: October 12, 2021Assignee: TOPPAN PRINTING CO., LTD.Inventor: Ryuichi Hirayama
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Patent number: 10649249Abstract: There is provided a liquid crystal driving apparatus which includes a first substrate and a second substrate, a first counter electrode that is provided on the first substrate so as to face the second substrate, a second counter electrode that is provided on the second substrate so as to face the first substrate, a polymer network liquid crystal layer that is enclosed between the first substrate and the second substrate, and a drive circuit configured to ON-drive the first counter electrode and the second counter electrode by applying a rectangular wave voltage for driving the second counter electrode upon inverting a phase and shifting forward or backward by a minute time ?t with respect to a rectangular wave voltage for driving the first counter electrode.Type: GrantFiled: March 19, 2018Date of Patent: May 12, 2020Assignee: TOPPAN PRINTING CO., LTD.Inventors: Shigeo Takeuchi, Ryuichi Hirayama
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Publication number: 20200033655Abstract: There is provided a liquid crystal optical modulation device that performs light control drive of a liquid crystal panel, the device including an optical modulation control section that switches and sets a frequency of a drive voltage in the form of a rectangular wave applied to the liquid crystal panel in accordance with a range of the drive voltage.Type: ApplicationFiled: October 3, 2019Publication date: January 30, 2020Applicant: TOPPAN PRINTING CO., LTD.Inventor: Ryuichi HIRAYAMA
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Publication number: 20190011774Abstract: A display device according to an embodiment includes a first display panel; a second display panel disposed above the first display panel with an air layer between the second display panel and the first display panel; and a light source unit disposed below the first display panel. The second display panel includes an anti-reflection film disposed on the air layer side surface.Type: ApplicationFiled: September 11, 2018Publication date: January 10, 2019Applicant: Ortus Technology Co., Ltd.Inventors: Ryuichi Hirayama, Norishige lwanami
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Publication number: 20180210244Abstract: There is provided a polymer network liquid crystal display device for image display according to an input image signal. The device includes a determination unit configured to determine whether an image for display according to the image signal is a moving image or a still image, and a correction unit configured to correct a hysteresis of the image for display, based on a result of the determination by the determination unit.Type: ApplicationFiled: March 20, 2018Publication date: July 26, 2018Applicant: Ortus Technology Co., Ltd.Inventor: Ryuichi HIRAYAMA
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Publication number: 20180203275Abstract: There is provided a liquid crystal driving apparatus which includes a first substrate and a second substrate, a first counter electrode that is provided on the first substrate so as to face the second substrate, a second counter electrode that is provided on the second substrate so as to face the first substrate, a polymer network liquid crystal layer that is enclosed between the first substrate and the second substrate, and a drive circuit configured to ON-drive the first counter electrode and the second counter electrode by applying a rectangular wave voltage for driving the second counter electrode upon inverting a phase and shifting forward or backward by a minute time ?t with respect to a rectangular wave voltage for driving the first counter electrode.Type: ApplicationFiled: March 19, 2018Publication date: July 19, 2018Applicant: Ortus Technology Co., Ltd.Inventors: Shigeo TAKEUCHI, Ryuichi Hirayama
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Patent number: 8581893Abstract: A liquid crystal display apparatus includes a first group of pixel electrodes having a first parasitic capacitance, a second group of pixel electrodes having a second parasitic capacitance, a common electrode, liquid crystal interposed between the common electrode and the first and second groups of pixel electrodes, respectively, and a driver circuit determining a first common voltage in accordance with the first parasitic capacitance and supplying the first common voltage to the common electrode during a writing period of the first group of pixel electrodes so as to substantially offset a voltage drop in the second group of pixel electrodes due to the first parasitic capacitance, the driver circuit determining a second common voltage in accordance with the second parasitic capacitance and supplying the second common voltage to the common electrode during a writing period of the second group of pixel electrodes so as to substantially offset a voltage drop in the second group of pixel electrodes due to the secType: GrantFiled: December 21, 2009Date of Patent: November 12, 2013Assignee: Casio Computer Co., Ltd.Inventor: Ryuichi Hirayama
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Driving circuit and driving method of active matrix display device, and active matrix display device
Patent number: 8330700Abstract: In an active matrix display device, one source line is arranged for every two pixels arranged along a gate line direction, and each two pixels which are adjacent to each other along the gate line direction across one of the source lines share the source line and are each connected to different gate lines. A gate driver block performs a first driving control which sequentially selects, in a first order, the gate lines in a pair of two gate lines corresponding to two pixels which are adjacent to each other along the gate line direction and are connected to different source lines. The gate driver block also performs a second driving control which sequentially selects, in a second order which is opposite to the first order, the gate lines in such a pair of two gate lines.Type: GrantFiled: March 13, 2008Date of Patent: December 11, 2012Assignee: Casio Computer Co., Ltd.Inventors: Shigeru Yamanaka, Ryuichi Hirayama, Ken Yoshino -
Patent number: 8294655Abstract: A liquid crystal display apparatus to which the present invention is applied has a first data conversion circuit and a second data conversion circuit. The first data conversion circuit converts each predetermined number of display data included in prepared display data into pixel data in which the respective display data are arranged in a predetermined arranging order and in time-series. The second data conversion circuit is provided for each the predetermined number of signal lines included in the display apparatus and sequentially applies display signal voltages corresponding to the pixel data to the predetermined number of signal lines respectively. The liquid crystal display apparatus equalizes the amounts of charges to be written in respective display pixels by reversing the arranging order of the display data in the pixel data and the order of applying the display signal voltages to the signal lines per field period or per horizontal scanning period.Type: GrantFiled: February 12, 2009Date of Patent: October 23, 2012Assignee: Casio Computer Co., Ltd.Inventors: Ryuichi Hirayama, Shunji Kashiyama, Naoki Inagaki
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Patent number: 8159435Abstract: An active matrix type display device in which one signal line is provided for every two pixels along a given direction and in which two pixels adjacent in the given direction on respective sides of one signal line share the signal line and are connected to respective different scanning lines, through switching elements. A scanning line driving circuit selects the plurality of scanning lines in turn, and a signal line driving circuit outputs signals according to information to be displayed to the plurality of signal lines. The scanning line driving circuit simultaneously selects two scanning lines corresponding to two pixels connected to different signal lines and adjacently disposed in the given direction and then selects only one scanning line corresponding to a pixel to be selected later out of the two pixels for only a prescribed period.Type: GrantFiled: September 27, 2007Date of Patent: April 17, 2012Assignee: Casio Computer Co., Ltd.Inventor: Ryuichi Hirayama
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Publication number: 20120075277Abstract: A liquid crystal display apparatus includes an active-matrix type display panel and a signal drive circuit. The active-matrix type display panel includes a pair of substrates, a liquid crystal layer interposed between the substrates, pixel electrodes arranged on one of the substrates in rows and columns, switching elements connected to the pixel electrodes, scan lines connected to the switching elements, and signal lines connected to the switching elements. Each signal line extends between two columns of the pixel electrodes, and any two pixel electrodes adjacent in the row direction use one signal line in common. One of two pixel electrodes is connected to an odd-numbered scan line, and the other of two pixel electrodes is connected to an even-numbered scan line. The signal drive circuit supplies display signals to the pixel electrodes through the signal lines, and to invert the display signal in polarity at every two other scan lines.Type: ApplicationFiled: September 27, 2011Publication date: March 29, 2012Applicant: CASIO COMPUTER CO., LTD.Inventor: Ryuichi HIRAYAMA
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Publication number: 20110157501Abstract: When a signal, which is switched between a first level (0 V) and a second level (Vseg) in a predetermined cycle, is input to a common electrode and respective segment electrodes of a plurality of polymer network (PN) liquid crystal display elements to be subjected to static driving, the plurality of PN liquid crystal display elements are divided into two or more groups. The level switching of a signal (SEG-A) that is output to the segment electrode of the PN liquid crystal display element included in one group and the level switching of a signal (SEG-B) that is output to the segment electrode of the PN liquid crystal display element as each signal output to the respective segment electrodes of the plurality of PN liquid crystal display elements are performed at timings that do not overlap each other.Type: ApplicationFiled: December 8, 2010Publication date: June 30, 2011Applicant: CASIO COMPUTER CO., LTD.Inventors: Minoru USUI, Ryuichi Hirayama, Naoki Inagaki
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Publication number: 20100156868Abstract: A liquid crystal display apparatus includes a first group of pixel electrodes having a first parasitic capacitance, a second group of pixel electrodes having a second parasitic capacitance, a common electrode, liquid crystal interposed between the common electrode and the first and second groups of pixel electrodes, respectively, and a driver circuit determining a first common voltage in accordance with the first parasitic capacitance and supplying the first common voltage to the common electrode during a writing period of the first group of pixel electrodes so as to substantially offset a voltage drop in the second group of pixel electrodes due to the first parasitic capacitance, the driver circuit determining a second common voltage in accordance with the second parasitic capacitance and supplying the second common voltage to the common electrode during a writing period of the second group of pixel electrodes so as to substantially offset a voltage drop in the second group of pixel electrodes due to the secType: ApplicationFiled: December 21, 2009Publication date: June 24, 2010Applicant: CASIO COMPUTER CO., LTD.Inventor: Ryuichi Hirayama
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Publication number: 20090146939Abstract: A liquid crystal display apparatus to which the present invention is applied has a first data conversion circuit and a second data conversion circuit. The first data conversion circuit converts each predetermined number of display data included in prepared display data into pixel data in which the respective display data are arranged in a predetermined arranging order and in time-series. The second data conversion circuit is provided for each the predetermined number of signal lines included in the display apparatus and sequentially applies display signal voltages corresponding to the pixel data to the predetermined number of signal lines respectively. The liquid crystal display apparatus equalizes the amounts of charges to be written in respective display pixels by reversing the arranging order of the display data in the pixel data and the order of applying the display signal voltages to the signal lines per field period or per horizontal scanning period.Type: ApplicationFiled: February 12, 2009Publication date: June 11, 2009Applicant: Casio Computer Co., Ltd.Inventors: Ryuichi Hirayama, Shunji Kashiyama, Naoki Inagaki
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Patent number: 7511691Abstract: A liquid crystal display apparatus to which the present invention is applied has a first data conversion circuit and a second data conversion circuit. The first data conversion circuit converts each predetermined number of display data included in prepared display data into pixel data in which the respective display data are arranged in a predetermined arranging order and in time-series. The second data conversion circuit is provided for each the predetermined number of signal lines included in the display apparatus and sequentially applies display signal voltages corresponding to the pixel data to the predetermined number of signal lines respectively. The liquid crystal display apparatus equalizes the amounts of charges to be written in respective display pixels by reversing the arranging order of the display data in the pixel data and the order of applying the display signal voltages to the signal lines per field period or per horizontal scanning period.Type: GrantFiled: December 27, 2004Date of Patent: March 31, 2009Assignee: Casio Computer Co., Ltd.Inventors: Ryuichi Hirayama, Shunji Kashiyama, Naoki Inagaki
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Publication number: 20080284776Abstract: An active matrix type display device in which one signal line is provided for every two pixels along a given direction and in which two pixels adjacent in the given direction on respective sides of one signal line share the signal line and are connected to respective different scanning lines, through switching elements. A scanning line driving circuit selects the plurality of scanning lines in turn, and a signal line driving circuit outputs signals according to information to be displayed to the plurality of signal lines. The scanning line driving circuit simultaneously selects two scanning lines corresponding to two pixels connected to different signal lines and adjacently disposed in the given direction and then selects only one scanning line corresponding to a pixel to be selected later out of the two pixels for only a prescribed period.Type: ApplicationFiled: September 27, 2007Publication date: November 20, 2008Applicant: Casio Computer Co., Ltd.Inventor: Ryuichi Hirayama
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Driving circuit and driving method of active matrix display device, and active matrix display device
Publication number: 20080238898Abstract: In an active matrix display device, one source line is arranged for every two pixels arranged along a gate line direction, and each two pixels which are adjacent to each other along the gate line direction across one of the source lines share the source line and are each connected to different gate lines. A gate driver block performs a first driving control which sequentially selects, in a first order, the gate lines in a pair of two gate lines corresponding to two pixels which are adjacent to each other along the gate line direction and are connected to different source lines. The gate driver block also performs a second driving control which sequentially selects, in a second order which is opposite to the first order, the gate lines in such a pair of two gate lines.Type: ApplicationFiled: March 13, 2008Publication date: October 2, 2008Applicant: Casio Computer Co., Ltd.Inventors: Shigeru Yamanaka, Ryuichi Hirayama, Ken Yoshino -
Patent number: 7365592Abstract: A power supply circuit includes at least one capacitor, a plurality of switching members, a power supply which outputs a plurality of voltages and a selecting section for controlling said plurality of switching sections to periodically select one of said plurality of voltages and apply the selected voltage to one terminal and the other terminal of the capacitor. The selecting section includes a member for applying the selected voltage to one terminal and the other terminal of the capacitor across a resistor, during a current limiting period immediately after the application of the selected one of said plurality of voltages to one terminal and another terminal of the capacitor is started.Type: GrantFiled: December 23, 2005Date of Patent: April 29, 2008Assignee: Casio Computer Co., Ltd.Inventor: Ryuichi Hirayama