Patents by Inventor Takaaki Koyama

Takaaki Koyama 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).

  • Patent number: 9715285
    Abstract: A position detection apparatus includes a projection unit that projects an image, a radiation unit that radiates light, a detection unit that detects reflected light of the light radiated from the radiation unit, and an output control unit that performs control for outputting information corresponding to a detection position of the reflected light based on a detection result from the detection unit when a radiation direction of the light radiated from the radiation unit is adjusted.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: July 25, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takaaki Koyama
  • Patent number: 9632616
    Abstract: An interactive system includes a transmitter (light-emitting pen) configured to transmit an optical signal and a projector. The projector includes a signal-intensity setting unit in which intensity information of a synchronization signal is set, a signal-intensity control unit (light-emission control unit) configured to control the intensity of the synchronization signal on the basis of the setting of the signal-intensity setting unit, a synchronization-signal transmitting unit (infrared-light emitting unit) configured to transmit the synchronization signal, and an image pickup unit configured to pick up an image of the optical signal transmitted from the transmitter. The transmitter includes a receiving unit (pen reception unit) configured to receive the synchronization signal and an optical-signal transmitting unit (pen control unit and a light-emitting diode) configured to transmit the optical signal in synchronization with the synchronization signal received by the receiving unit.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: April 25, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yasuyuki Kobayashi, Takaaki Koyama, Nobuyuki Otsuki, Masahiro Horiguchi, Yukihiro Karasawa
  • Publication number: 20150324054
    Abstract: An interactive system includes a transmitter (light-emitting pen) configured to transmit an optical signal and a projector. The projector includes a signal-intensity setting unit in which intensity information of a synchronization signal is set, a signal-intensity control unit (light-emission control unit) configured to control the intensity of the synchronization signal on the basis of the setting of the signal-intensity setting unit, a synchronization-signal transmitting unit (infrared-light emitting unit) configured to transmit the synchronization signal, and an image pickup unit configured to pick up an image of the optical signal transmitted from the transmitter. The transmitter includes a receiving unit (pen reception unit) configured to receive the synchronization signal and an optical-signal transmitting unit (pen control unit and a light-emitting diode) configured to transmit the optical signal in synchronization with the synchronization signal received by the receiving unit.
    Type: Application
    Filed: September 13, 2013
    Publication date: November 12, 2015
    Inventors: Yasuyuki KOBAYASHI, Takaaki KOYAMA, Nobuyuki OTSUKI, Masahiro HORIGUCHI, Yukihiro KARASAWA
  • Publication number: 20150205377
    Abstract: A position detection apparatus includes a projection unit that projects an image, a radiation unit that radiates light, a detection unit that detects reflected light of the light radiated from the radiation unit, and an output control unit that performs control for outputting information corresponding to a detection position of the reflected light based on a detection result from the detection unit when a radiation direction of the light radiated from the radiation unit is adjusted.
    Type: Application
    Filed: January 16, 2015
    Publication date: July 23, 2015
    Inventor: Takaaki KOYAMA
  • Publication number: 20150143911
    Abstract: [Problems to be solved] A physical/chemical sensor that enables reduction of the size of the sensor and formation of arrays of the sensors is provided. The sensor can sense small change of surface stress and can measure mass of fixed specific substance. Also, a measuring method of the specific substance using the sensor is provided. [Means for solving problems] A physical/chemical sensor has a movable membrane (3) having a diaphragm structure provided to form a hollow section (2) between the movable membrane (3) and a light receiving surface of a light receiving element (1), a first piezoelectric membrane (4) that is provided on a front-side surface or a backside surface of the movable membrane (3) and that excites the movable membrane (3), and a second piezoelectric membrane (5) that is provided on the front-side surface or the backside surface of the movable membrane (3) and that senses a voltage caused by oscillation of the movable membrane (3).
    Type: Application
    Filed: November 20, 2014
    Publication date: May 28, 2015
    Applicants: STANLEY ELECTRIC CO., LTD., National University Corporation
    Inventors: Kazuhiro TAKAHASHI, Chiharu SASAKI, Masanao TANI, Takaaki KOYAMA
  • Patent number: 8922861
    Abstract: In a two-dimensional optical deflector apparatus comprising an optical deflector and a driver for driving the optical deflector, the optical deflector includes a mirror, a first piezoelectric actuator for rocking the mirror with respect to a first axis of the mirror, and a second piezoelectric actuator of a meander type for rocking the mirror with respect to a second axis of the mirror perpendicular to the first axis. The driver generates a curved-type saw-tooth drive voltage and applies the curved-type saw-tooth drive voltage to the second piezoelectric actuator.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: December 30, 2014
    Assignee: Stanley Electric Co., Ltd.
    Inventor: Takaaki Koyama
  • Publication number: 20140285524
    Abstract: An image processing device includes a detection section adapted to detect a pointing direction of a pointing body, and a rotation section adapted to rotate an image based on the pointing direction detected by the detection section.
    Type: Application
    Filed: March 18, 2014
    Publication date: September 25, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takaaki KOYAMA
  • Patent number: 8817351
    Abstract: In an optical deflector including a mirror, a fixed frame, and a piezoelectric actuator connected to the fixed frame for rocking the mirror with respect to an axis of the mirror, at least one piezoelectric sensor is provided on the fixed frame to sense a rocking vibration of the mirror caused by the piezoelectric actuator.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: August 26, 2014
    Assignee: Stanley Electric Co., Ltd.
    Inventor: Takaaki Koyama
  • Patent number: 8573781
    Abstract: A projector that includes: a light source; a light-on/off unit that turns on or off the light source; a recording medium reproduction unit that reproduces information recorded on a recording medium, and outputs a video signal; a video signal processing section that converts the video signal provided by the recording medium reproduction unit, and generates a projection-video-use video signal; a light modulation unit that modulates a light coming from the light source based on the video signal generated by the video signal processing section, and emits a resulting video light; a projection system that includes a projection lens, and magnifies and projects the video light coming from the light modulation unit; a lens cover that opens and closes the front of the projection lens; a lens cover open/close detection sensor that detects an open/close state of the lens cover; and a control section that at least controls operation of the light-on/off unit and that of the recording medium reproduction unit.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: November 5, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Takaaki Koyama
  • Publication number: 20120327494
    Abstract: In an optical deflector including a mirror, a support body, and a piezoelectric actuator connected to the support body for rocking the mirror with respect to an axis of the mirror, at least one piezoelectric sensor is provided on the support body to sense a rocking vibration of the mirror caused by the piezoelectric actuator.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 27, 2012
    Inventor: Takaaki KOYAMA
  • Publication number: 20120243065
    Abstract: In a two-dimensional optical deflector apparatus comprising an optical deflector and a driver for driving the optical deflector, the optical deflector includes a mirror, a first piezoelectric actuator for rocking the mirror with respect to a first axis of the mirror, and a second piezoelectric actuator of a meander type for rocking the mirror with respect to a second axis of the mirror perpendicular to the first axis. The driver generates a curved-type saw-tooth drive voltage and applies the curved-type saw-tooth drive voltage to the second piezoelectric actuator.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: Stanley Electric Co., Ltd.
    Inventor: Takaaki KOYAMA
  • Publication number: 20110034317
    Abstract: An object of the invention is to provide “a hot gunning repair mix” excellent in peeling resistance and hardenable for a short period of time. The hot gunning repair mix according to the invention is a hot gunning repair mix including a refractory raw material containing 20 to 40% by weight of grains having a size of 75 ?m or less and a binder for forming a carbon bond in hot condition, in which a metal powder or an iron alloy powder containing iron (Fe) as a main component and 70% by weight or more of grains having a size of 1.0 mm or less is added in an amount of 5 to 50% by weight based on a total amount of the refractory raw material and the binder.
    Type: Application
    Filed: April 10, 2008
    Publication date: February 10, 2011
    Applicant: SHINAGAWA REFRACTORIES CO., LTD.
    Inventors: Hisaharu Sasaki, Takaaki Koyama, Kiyoyuki Komatsubara
  • Publication number: 20100152321
    Abstract: An object is to provide a nonaqueous hot casting repair mix which, while enjoying simple and convenient installation, can substantially reduce hardening time after installation. The hot casting repair mix according to the invention is characterized by containing 5 to 30% by weight of a binder capable of forming a carbon bond in hot condition and 1 to less than 5% by weight of an iron powder and the balance consisting of a refractory aggregate.
    Type: Application
    Filed: April 10, 2008
    Publication date: June 17, 2010
    Applicant: SHINAGAWA REFRACTORIES, CO., LTD.
    Inventors: Makoto Namba, Hisaharu Sasaki, Kiyoyuki Komatsubara, Takaaki Koyama
  • Publication number: 20090109350
    Abstract: A projector that includes: a light source; a light-on/off unit that turns on or off the light source; a recording medium reproduction unit that reproduces information recorded on a recording medium, and outputs a video signal; a video signal processing section that converts the video signal provided by the recording medium reproduction unit, and generates a projection-video-use video signal; a light modulation unit that modulates a light coming from the light source based on the video signal generated by the video signal processing section, and emits a resulting video light; a projection system that includes a projection lens, and magnifies and projects the video light coming from the light modulation unit; a lens cover that opens and closes the front of the projection lens; a lens cover open/close detection sensor that detects an open/close state of the lens cover; and a control section that at least controls operation of the light-on/off unit and that of the recording medium reproduction unit.
    Type: Application
    Filed: August 7, 2008
    Publication date: April 30, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takaaki KOYAMA
  • Publication number: 20090092565
    Abstract: A dental enamel recalcification accelerator that even when used in oral compositions and food or beverage, poses no safety problem, and that is capable of effectively promoting the recalcification of decalcified dental enamel to thereby positively suppress any dental caries; and containing the same, an oral composition and food or beverage. There is provided a dental enamel recalcification accelerator comprising anhydrogalactose-containing red algae and/or an extract thereof as an active ingredient. Further, there are provided an oral composition and food or beverage comprising the dental enamel recalcification accelerator.
    Type: Application
    Filed: May 24, 2005
    Publication date: April 9, 2009
    Applicant: LOTTE CO., LTD.
    Inventors: Takaaki Koyama, Daigo Sugita, Shinya Asada, Susumu Shimura
  • Patent number: 6974217
    Abstract: An automatic keystone correction which enables even an inexperienced user to easily obtain an image corrected using the keystone distortion during a tilted projection. The projector detects varying of its elevation angle by using an elevation detecting module. When the angle stops varying, the projector determines that the elevation adjustment by the user ends, and executes auto keystone correction of the input image according to the elevation angle.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: December 13, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Keishi Kimura, Takaaki Koyama
  • Patent number: 6932481
    Abstract: To provide a technique for facilitating control of a plurality of projectors. A projection display system comprises a plurality of projectors wherein a plurality of images projected by the projectors are displayed on a common projection screen. Each projector comprises: a control signal processor for processing a control signal given from an external device and generating a processed control signal; and a signal input/output section for input/output of the control signal and the processed control signal. The plurality of projectors are coupled in a cascade connection, by interconnecting the signal input/output sections of the projectors. The control signal and the processed control signal include connection sequence data indicating the cascade connection sequence. The control signal processor of each projector comprises a memory for storing, on the basis of a given control signal, a connection sequence when the projectors are coupled in a cascade connection.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: August 23, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Takaaki Koyama, Yasutaka Kamiya, Shoichi Akaiwa, Toru Karasawa
  • Publication number: 20050007561
    Abstract: To provide a technique for facilitating control of a plurality of projectors. A projection display system comprises a plurality of projectors wherein a plurality of images projected by the projectors are displayed on a common projection screen. Each projector comprises: a control signal processor for processing a control signal given from an external device and generating a processed control signal; and a signal input/output section for input/output of the control signal and the processed control signal. The plurality of projectors are coupled in a cascade connection, by interconnecting the signal input/output sections of the projectors. The control signal and the processed control signal include connection sequence data indicating the cascade connection sequence. The control signal processor of each projector comprises a memory for storing, on the basis of a given control signal, a connection sequence when the projectors are coupled in a cascade connection.
    Type: Application
    Filed: July 30, 2004
    Publication date: January 13, 2005
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takaaki Koyama, Yasutaka Kamiya, Shoichi Akaiwa, Toru Karasawa
  • Patent number: 6840625
    Abstract: To provide a technique for facilitating control of a plurality of projectors. A projection display system comprises a plurality of projectors wherein a plurality of images projected by the projectors are displayed on a common projection screen. Each projector comprises: a control signal processor for processing a control signal given from an external device and generating a processed control signal; and a signal input/output section for input/output of the control signal and the processed control signal. The plurality of projectors are coupled in a cascade connection, by interconnecting the signal input/output sections of the projectors. The control signal and the processed control signal include connection sequence data indicating the cascade connection sequence. The control signal processor of each projector comprises a memory for storing, on the basis of a given control signal, a connection sequence when the projectors are coupled in a cascade connection.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: January 11, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Takaaki Koyama, Yasutaka Kamiya, Shoichi Akaiwa, Toru Karasawa
  • Publication number: 20040041985
    Abstract: An automatic keystone correction which enables even an inexperienced user to easily obtain an image corrected using the keystone distortion during a tilted projection. The projector detects varying of its elevation angle by using an elevation detecting module. When the angle stops varying, the projector determines that the elevation adjustment by the user ends, and executes auto keystone correction of the input image according to the elevation angle.
    Type: Application
    Filed: June 20, 2003
    Publication date: March 4, 2004
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Keishi Kimura, Takaaki Koyama