Patents by Inventor Mitsuo Ohashi
Mitsuo Ohashi 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: 11510286Abstract: The present invention provides a heater temperature control circuit including a heater and a control circuit that controls a temperature of the heater, wherein the control circuit includes a bridge circuit in which a first circuit and a second circuit are connected in parallel, and an operational amplifier connected to the bridge circuit, wherein in the first circuit, the heater and a resistor are connected in series, and a midpoint of the first circuit is connected to one input portion of the operational amplifier, and an output value Vout from the second circuit is input to the other input portion of the operational amplifier, the output value Vout being obtained by multiplying a division ratio of a target resistance value Rh of the heater and a resistance value R1 of the resistor with a reference voltage Vref of the bridge circuit.Type: GrantFiled: November 28, 2018Date of Patent: November 22, 2022Assignee: KOA CORPORATIONInventors: Toshitsugu Ueda, Hiroshi Oigawa, Mitsuo Ohashi, Mizuho Shimojima, Takaaki Yano
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Publication number: 20200296800Abstract: The present invention provides a heater temperature control circuit including a heater and a control circuit that controls a temperature of the heater, wherein the control circuit includes a bridge circuit in which a first circuit and a second circuit are connected in parallel, and an operational amplifier connected to the bridge circuit, wherein in the first circuit, the heater and a resistor are connected in series, and a midpoint of the first circuit is connected to one input portion of the operational amplifier, and an output value Vout from the second circuit is input to the other input portion of the operational amplifier, the output value Vout being obtained by multiplying a division ratio of a target resistance value Rh of the heater and a resistance value R1 of the resistor with a reference voltage Vref of the bridge circuit.Type: ApplicationFiled: November 28, 2018Publication date: September 17, 2020Applicant: KOA CORPORATIONInventors: Toshitsugu UEDA, Hiroshi OIGAWA, Mitsuo OHASHI, Mizuho SHIMOJIMA, Takaaki YANO
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Patent number: 8324816Abstract: An LED driving circuit is provided for making it possible to economically drive a serially connected LED circuit by means of a switching device with a relatively low withstanding voltage even if the number of serially connected LED devices increases. In an LED driving circuit provided with a serially connected LED circuit (11) in which many LED devices are serially connected and a switching device (13) serially connected with the serially connected LED circuit (11) to control that an electrical current flowing through the serially connected LED circuit (11) is turned on or off, wherein a circuit device (15), which comprises a resistor, a constant voltage diode, a constant current diode, or the like, is connected in parallel with the switching device to make a minute current flow through the serially connected LED circuit (11) to the extent that the LED devices are not turned on when the switching device is turned off.Type: GrantFiled: October 17, 2007Date of Patent: December 4, 2012Assignee: Koa CorporationInventors: Mitsuo Ohashi, Iwao Sagara, Hideyuki Komatsu
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Patent number: 7729732Abstract: A biological information measuring apparatus includes a plurality of light emission sections, a plurality of light detection sections, and a control section. Each light emission section injects, into a living organism, a spectrum-modulated light beam having a specific wavelength. The control section acquires a spread code sequence employed by each of the light emission sections for spread spectrum modulation, and supplies the spread code sequence to the light detection sections. By use of the spread code sequence, each light detection section selectively receives a specific reflected light beam having the spread code sequence, which is selected from among the light beams which have been emitted from the light emission sections and reflected in the living organism. Subsequently, each light detection section despreads an electrical signal corresponding to the thus-received reflected light beam, and outputs a detection signal corresponding to the intensity of the reflected light beam.Type: GrantFiled: February 9, 2006Date of Patent: June 1, 2010Assignee: Spectratech Inc.Inventor: Mitsuo Ohashi
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Publication number: 20100072898Abstract: An LED driving circuit is provided for making it possible to economically drive a serially connected LED circuit by means of a switching device with a relatively low withstanding voltage even if the number of serially connected LED devices increases. In an LED driving circuit provided with a serially connected LED circuit (11) in which many LED devices are serially connected and a switching device (13) serially connected with the serially connected LED circuit (11) to control that an electrical current flowing through the serially connected LED circuit (11) is turned on or off, wherein a circuit device (15), which comprises a resistor, a constant voltage diode, a constant current diode, or the like, is connected in parallel with the switching device to make a minute current flow through the serially connected LED circuit (11) to the extent that the LED devices are not turned on when the switching device is turned off.Type: ApplicationFiled: October 17, 2007Publication date: March 25, 2010Applicant: KOA CORPORATIONInventors: Mitsuo Ohashi, Iwao Sagara, Hideyuki Komatsu
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Patent number: 7569821Abstract: A light emission section spread-spectrum modulates a base band signal at a chip frequency f to thereby generate a primary modulated signal, modulates the primary modulated signal at a frequency 2f to thereby generate a secondary modulated signal, and emits a near-infrared light beam having a specific wavelength into a living organism on the basis of the secondary modulated signal. A light detection section receives a reflected light beam from the interior of the living organism in an effective detection band 2f, converts it to an electrical detection signal, and converts the detection signal to a digital signal at a sampling frequency 4f. The light detection section then demodulates the digital signal at the frequency 2f to thereby generate a primary demodulated signal, and demodulates the primary demodulated signal through spectrum despreading to thereby generate a secondary demodulated signal. Thus, a biological information signal representing biological information is output.Type: GrantFiled: October 21, 2008Date of Patent: August 4, 2009Assignee: Spectratech Inc.Inventor: Mitsuo Ohashi
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Patent number: 7570367Abstract: A light emission section includes light generators which are operated on the basis of drive signals from a controller so as to emit near infrared interferable light beams having different specific wavelengths to a light interference section. The light interference section includes a beam splitter having a low-reflection region. The beam splitter allows a most portion of the near infrared interferable light beams to propagate toward an object to be examined, and reflects a portion of the near infrared interferable light beams to a movable mirror. The beam splitter causes interference between measurement light reflected by the object and reference light reflected by the movable mirror, and the resultant interference light propagates to a light detection section. The light detection section receives the interference light and calculates predetermined information regarding the object by making use of the quantity distribution of the interference light. A display section displays the calculated information.Type: GrantFiled: January 5, 2007Date of Patent: August 4, 2009Assignee: Spectratech Inc.Inventors: Mitsuo Ohashi, Yoshitoshi Ito
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Publication number: 20090108204Abstract: A light emission section spread-spectrum modulates a base band signal at a chip frequency f to thereby generate a primary modulated signal, modulates the primary modulated signal at a frequency 2f to thereby generate a secondary modulated signal, and emits a near-infrared light beam having a specific wavelength into a living organism on the basis of the secondary modulated signal. A light detection section receives a reflected light beam from the interior of the living organism in an effective detection band 2f, converts it to an electrical detection signal, and converts the detection signal to a digital signal at a sampling frequency 4f. The light detection section then demodulates the digital signal at the frequency 2f to thereby generate a primary demodulated signal, and demodulates the primary demodulated signal through spectrum despreading to thereby generate a secondary demodulated signal. Thus, a biological information signal representing biological information is output.Type: ApplicationFiled: October 21, 2008Publication date: April 30, 2009Applicant: SPECTRATECH INC.Inventor: Mitsuo OHASHI
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Patent number: 7345669Abstract: A photometric device of liquid crystal display and a liquid crystal display in which photometry can be performed without relying upon manpower and the liquid crystal plane is shielded only at the time of photometry. The photometric device comprises a liquid crystal display part, a bezel surrounding the four sides of the liquid crystal display, a shaft part provided at the corner part of the bezel and fixed rotatably thereto, a movable part having the end part thereof connected to the shaft part, and a sensor part provided in the liquid crystal display part at the other end part of the movable part.Type: GrantFiled: March 28, 2003Date of Patent: March 18, 2008Assignee: Eizo Nanao CorporationInventors: Mitsuo Ohashi, Ikufumi Honda
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Patent number: 7278027Abstract: A biomedical recognition system includes diagnostic image information obtained by taking an image of a patient, a workstation storing the diagnostic image information, and a display device for displaying the diagnostic image information. A sensor is provided for capturing a biomedical information of a doctor. A biomedical information recognition system is connected to the sensor and integrated in the workstation for comparing a previously registered biomedical information and the biomedical information captured by the sensor. A display device control system is provided for causing the display device to display a diagnostic image linked to the biomedical information if a comparing result indicates a correspondence between the previously registered biomedical information and the biomedical information captured by the sensor, and for causing the display device to discontinue a part of functions thereof if the comparing result indicates a non-correspondence between the information.Type: GrantFiled: November 24, 2000Date of Patent: October 2, 2007Assignee: Eizo Nanao CorporationInventors: Chiaki Todaka, Mitsuo Ohashi, Ron Simpson, Toshihiko Furukawa
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Publication number: 20070195330Abstract: A light emission section includes light generators which are operated on the basis of drive signals from a controller so as to emit near infrared interferable light beams having different specific wavelengths to a light interference section. The light interference section includes a beam splitter having a low-reflection region. The beam splitter allows a most portion of the near infrared interferable light beams to propagate toward an object to be examined, and reflects a portion of the near infrared interferable light beams to a movable mirror. The beam splitter causes interference between measurement light reflected by the object and reference light reflected by the movable mirror, and the resultant interference light propagates to a light detection section. The light detection section receives the interference light and calculates predetermined information regarding the object by making use of the quantity distribution of the interference light. A display section displays the calculated information.Type: ApplicationFiled: January 5, 2007Publication date: August 23, 2007Applicant: SPECTRATECH INC.Inventors: Mitsuo OHASHI, Yoshitoshi ITO
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Publication number: 20070014464Abstract: A light emission section includes a plurality of light sources and emits near infrared low coherent light beams having different specific wavelengths to a light interference section. The light interference section allows the near infrared low coherent light beams to pass therethrough toward the eyeground and partially reflects the beams toward a movable mirror. Measurement light reflected by the eyeground and reference light reflected by the movable mirror interfere at the light interference section. Resultant interference light rays propagate to a light detection section, which calculates the profile of the eyeground from the light quantities of the interference light rays, and calculates the oxygen saturation SO2 from the light quantity distributions of the near infrared low coherent light beams emitted from the light emission section and the light quantities of the received interference light rays. A display section displays the calculated profile and oxygen saturation SO2 in a superposed manner.Type: ApplicationFiled: May 16, 2006Publication date: January 18, 2007Applicant: Spectratech Inc.Inventor: Mitsuo Ohashi
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Publication number: 20060274022Abstract: A photometric device of liquid crystal display and a liquid crystal display in which photometry can be performed without relying upon manpower and the liquid crystal plane is shielded only at the time of photometry. The photometric device comprises a liquid crystal display part, a bezel surrounding the four sides of the liquid crystal display, a shaft part provided at the corner part of the bezel and fixed rotatably thereto, a movable part having the end part thereof connected to the shaft part, and a sensor part provided in the liquid crystal display part at the other end part of the movable part.Type: ApplicationFiled: March 28, 2003Publication date: December 7, 2006Inventors: Mitsuo Ohashi, Ikufumi Honda
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Publication number: 20060222224Abstract: A biological information measuring apparatus includes a plurality of light emission sections, a plurality of light detection sections, and a control section. Each light emission section injects, into a living organism, a spectrum-modulated light beam having a specific wavelength. The control section acquires a spread code sequence employed by each of the light emission sections for spread spectrum modulation, and supplies the spread code sequence to the light detection sections. By use of the spread code sequence, each light detection section selectively receives a specific reflected light beam having the spread code sequence, which is selected from among the light beams which have been emitted from the light emission sections and reflected in the living organism. Subsequently, each light detection section despreads an electrical signal corresponding to the thus-received reflected light beam, and outputs a detection signal corresponding to the intensity of the reflected light beam.Type: ApplicationFiled: February 9, 2006Publication date: October 5, 2006Applicant: Spectratech Inc.Inventor: Mitsuo Ohashi
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Publication number: 20060181673Abstract: The quantity of light from a backlight is monitored by a first photodetector, and the environment on the part of a user is monitored by a second photodetector disposed in the rear of a liquid crystal panel, not on the front thereof. It is possible to exclude the influence of external light from the user side on the first photodetector which detects the quantity of light from the backlight.Type: ApplicationFiled: March 30, 2006Publication date: August 17, 2006Applicant: Eizo Nanao CorporationInventors: Mitsuo Ohashi, Katsue Ueda
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Patent number: 7068333Abstract: The quantity of light from a backlight is monitored by a first photodetector, and the environment on the part of a user is monitored by a second photodetector disposed in the rear of a liquid crystal panel, not on the front thereof. It is possible to exclude the influence of external light from the user side on the first photodetector which detects the quantity of light from the backlight.Type: GrantFiled: October 16, 2001Date of Patent: June 27, 2006Assignee: Eizo Nanao CorporationInventors: Mitsuo Ohashi, Katsue Ueda
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Patent number: 6961040Abstract: A two-dimensional monochrome bit face display has a luminance resolution that is equal to or higher than that of a CRT monitor. In one implementation, a two-dimensional monochrome bit face display has a bit face in which each pixel is constituted by m sub-pixels and neutral density filters mounted on the m sub-pixels of a respective pixel have light transmittances proportional to values ½n where n is an integer. In another implementation, mask filters are mounted on the m sub-pixels and have windows with light transmittances that are proportional to values ½n. Alternatively, areas of the m sub-pixels are set in the same proportion. The luminance of each sub-pixel is electronically controlled to improve the luminance resolution of the bit face display.Type: GrantFiled: April 19, 2002Date of Patent: November 1, 2005Assignee: Eizo Nanao CorporationInventors: Mitsuo Ohashi, Fumio Kawaguchi, Katsue Ueda, Motohiro Kurisu
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Publication number: 20040246434Abstract: The quantity of light from a backlight is monitored by a first photodetector, and the environment on the part of a user is monitored by a second photodetector disposed in the rear of a liquid crystal panel, not on the front thereof. It is possible to exclude the influence of external light from the user side on the first photodetector which detects the quantity of light from the backlight.Type: ApplicationFiled: April 14, 2004Publication date: December 9, 2004Inventors: Mitsuo Ohashi, Katsue Ueda
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Publication number: 20030071775Abstract: A two-dimensional monochrome bit face display has a luminance resolution that is equal to or higher than that of a CRT monitor. In one implementation, a two-dimensional monochrome bit face display has a bit face in which each pixel is constituted by m sub-pixels and neutral density filters mounted on the m sub-pixels of a respective pixel have light transmittances proportional to values ½n where n is an integer. In another implementation, mask filters are mounted on the m sub-pixels and have windows with light transmittances that are proportional to values ½n. Alternatively, areas of the m sub-pixels are set in the same proportion. The luminance of each sub-pixel is electronically controlled to improve the luminance resolution of the bit face display.Type: ApplicationFiled: April 19, 2002Publication date: April 17, 2003Inventors: Mitsuo Ohashi, Fumio Kawaguchi, Katsue Ueda, Motohiro Kurisu
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Patent number: RE38921Abstract: Phenoxyalkylcarboxylic acid derivative represented by the following formula, wherein R1 indicates hydrogen atom, methyl group or ethyl group, m is an integer from 2 to 5, and n is an integer from 3 to 8, X1 and X2 each independently represent sulfur atom, oxygen atom, sulfinyl group or sulfonyl group, proviso X1 and X2 are not simultaneously oxygen atom; their alkali salts and hydrates thereof are useful as antiallergic agents.Type: GrantFiled: July 21, 2003Date of Patent: December 13, 2005Assignee: Kyorin Pharmaceutical Co., Ltd.Inventors: Mitsuo Ohashi, Katsuya Awano, Toshio Tanaka, Tetsuya Kimura