Patents by Inventor Yutaka Takada
Yutaka Takada 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).
-
Publication number: 20100326189Abstract: An angular velocity detection apparatus (i.e., physical quantity detection apparatus) includes a gyro sensor element (i.e., physical quantity detection element) that allows an angular velocity detection signal that corresponds to the magnitude of an angular velocity (i.e., physical quantity) and a leakage signal of vibrations based on a drive signal (square-wave voltage signal) to flow through a detection electrode, a driver circuit that generates the drive signal, a synchronous detection circuit that performs a synchronous detection process on a detection target signal that includes the angular velocity detection signal and the leakage signal based on a detection signal that is synchronized with the drive signal, and a phase change circuit that changes a relative timing of at least one of a rising edge and a falling edge of the detection signal with respect to the detection target signal based on a control signal so that at least part of the leakage signal is output by the synchronous detection process.Type: ApplicationFiled: June 9, 2010Publication date: December 30, 2010Applicants: EPSON TOYOCOM CORPORATION, SEIKO NPC CORPORATION, SEIKO EPSON CORPORATIONInventors: Kenji Sato, Yutaka Takada, Hideto Naruse, Masayuki Takahashi
-
Publication number: 20100320907Abstract: An optical source device includes a solid high frequency oscillating unit that outputs a high frequency signal, a waveguide that receives the high frequency signal output from the solid high frequency oscillating unit and radiates the received high frequency signal as a microwave, and a light emitting unit that emits light by the microwave radiated from the waveguide unit. A container of the waveguide unit has a space surrounded by reflective surfaces that reflect the microwave radiated from the antenna unit so as to collect the microwave. A projector includes this optical source device, an optical modulating unit that modulates a light beam emitted from the light emitting unit of the optical source device according to image information to form an optical image, and a projecting unit that projects the optical image formed by the optical modulating unit.Type: ApplicationFiled: August 12, 2010Publication date: December 23, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Yutaka TAKADA, Shigekazu TAKAGI, Satoshi FUJII, Kesatoshi TAKEUCHI
-
Publication number: 20100270940Abstract: A lamp includes a light emitter enclosing a material emitting light upon receiving irradiation of microwave, and a coil formed on an outer side of the light emitter. In the lamp, a position of the coil with respect to the light emitter is changed in response to a temperature.Type: ApplicationFiled: July 9, 2010Publication date: October 28, 2010Applicant: Seiko Epson CorporationInventors: Yutaka Takada, Makoto Inoguchi
-
Patent number: 7816871Abstract: To provide a projector using a light source device that is rapidly and reliably turned on and can stably obtain a desired amount of light and a method of rapidly and reliably turning on a light source device of a projector. A power control unit adjusts the amplification factor of an amplifying unit for microwaves such that microwave power having a pulse form that is higher than the microwave power radiated to keep an electrodeless lamp emitting light is radiated to turn on the electrodeless lamp. Therefore, a microwave having predetermined power is radiated to the electrodeless lamp at once.Type: GrantFiled: October 31, 2006Date of Patent: October 19, 2010Assignee: Seiko Epson CorporationInventors: Shigekazu Takagi, Yutaka Takada, Satoshi Fujii
-
Patent number: 7802890Abstract: A light source device includes a microwave generating section for generating a microwave, a reflector connected to the microwave generating section, and a microwave electrodeless lamp disposed inside a cavity, the cavity including the reflector and a metallic chamber covering an opening section of the reflector. The chamber includes a tube member having an opening section for communicating the inside and the outside of the cavity to lead a light flux out of the chamber, and a bore diameter, D of the opening section, a length L of the tube member, a wavelength ? of the microwave, and a wavelength ? of the light flux satisfy ?<D?(¼)?, L?(¼)?, and D+L=(½)?.Type: GrantFiled: January 31, 2008Date of Patent: September 28, 2010Assignee: Seiko Epson CorporationInventors: Yutaka Takada, Hiroyuki Moteki
-
Patent number: 7795815Abstract: The invention provides an optical source device and a projector including the optical source device, in which a microwave is used to reduce the size, and increase the life span. The optical source device according to the invention includes a solid high frequency oscillating unit that outputs a high frequency signal, a waveguide that receives the high frequency signal output from the solid high frequency oscillating unit and radiates the received high frequency signal as a microwave, and a light emitting unit that emits light by the microwave radiated from the waveguide unit. A container of the waveguide unit has a space surrounded by reflective surfaces that reflect the microwave radiated from the antenna unit so as to collect the microwave.Type: GrantFiled: October 31, 2006Date of Patent: September 14, 2010Assignee: Seiko Epson CorporationInventors: Yutaka Takada, Shigekazu Takagi, Satoshi Fujii, Kesatoshi Takeuchi
-
Patent number: 7781974Abstract: A lamp includes a light emitter enclosing a material emitting light upon receiving irradiation of microwave, and a coil formed on an outer side of the light emitter. In the lamp, a position of the coil with respect to the light emitter is changed in response to a temperature.Type: GrantFiled: December 5, 2007Date of Patent: August 24, 2010Assignee: Seiko Epson CorporationInventors: Yutaka Takada, Makoto Inoguchi
-
Patent number: 7605542Abstract: A light-emitting device, includes: an emitter sealed with a gas emitting light caused by a microwave; a high frequency power supply section including a diamond SAW oscillator and outputting a high frequency signal being output from the diamond SAW oscillator to a subsequent stage; and a waveguide unit emitting the high frequency signal being input from the high frequency power supply section towards the emitter as the microwave.Type: GrantFiled: September 28, 2006Date of Patent: October 20, 2009Assignee: Seiko Epson CorporationInventors: Hideo Karasawa, Yoshiaki Matsumoto, Masahiro Onuki, Masayasu Sakuma, Yutaka Takada
-
Patent number: 7554054Abstract: A high-frequency heating device including: a solid-state oscillator that generates a microwave; an amplifier that amplifies the microwave generated by the solid-state oscillator; an isolator that is connected to a stage subsequent to the amplifier and blocks a reflected wave directed from an object exposed with the microwave; an antenna that irradiates the microwave toward the object; and a metal cavity that traps therein the microwave irradiated to the object.Type: GrantFiled: September 28, 2005Date of Patent: June 30, 2009Assignee: Seiko Epson CorporationInventors: Yutaka Takada, Satoshi Fujii
-
Publication number: 20080203883Abstract: A lamp includes a light emitter enclosing a material emitting light upon receiving irradiation of microwave, and a coil formed on an outer side of the light emitter. In the lamp, a position of the coil with respect to the light emitter is changed in response to a temperature.Type: ApplicationFiled: December 5, 2007Publication date: August 28, 2008Applicant: SEIKO EPSON CORPORATIONInventors: Yutaka TAKADA, Makoto INOGUCHI
-
Publication number: 20080186457Abstract: A light source device includes a microwave generating section for generating a microwave, a reflector connected to the microwave generating section, and a microwave electrodeless lamp disposed inside a cavity, the cavity including the reflector and a metallic chamber covering an opening section of the reflector. The chamber includes a tube member having an opening section for communicating the inside and the outside of the cavity to lead a light flux out of the chamber, and a bore diameter, D of the opening section, a length L of the tube member, a wavelength ? of the microwave, and a wavelength ? of the light flux satisfy ?<D?(¼)?, L?(¼) ?, and D+L=(½)?.Type: ApplicationFiled: January 31, 2008Publication date: August 7, 2008Applicant: SEIKO EPSON CORPORATIONInventors: Yutaka TAKADA, Hiroyuki MOTEKI
-
Publication number: 20070103650Abstract: Task To provide a projector using a light source device that is rapidly and reliably turned on and can stably obtain a desired amount of light and a method of rapidly and reliably turning on a light source device of a projector. Means for Resolution A power control unit adjusts the amplification factor of an amplifying unit for microwaves such that microwave power having a pulse form that is higher than the microwave power radiated to keep an electrodeless lamp emitting light is radiated to turn on the electrodeless lamp. Therefore, a microwave having predetermined power is radiated to the electrodeless lamp at once.Type: ApplicationFiled: October 31, 2006Publication date: May 10, 2007Applicant: SEIKO EPSON CORPORATIONInventors: Shigekazu TAKAGI, Yutaka TAKADA, Satoshi FUJII
-
Publication number: 20070103645Abstract: Task To provide a projector using a light source device that is rapidly turned on and emit light with high energy efficiency. Means for Resolution Microwaves having different phases are radiated from antennas to three branched light emitting areas in an electrodeless lamp. Light emitted from the three light emitting areas are radiated from one light radiating area of the electrodeless lamp. The microwaves having the maximum amplitude and a plurality of phases are sequentially radiated onto the three light emitting areas, which makes it possible for the electrodeless lamp 1 to emit light with high energy efficiency.Type: ApplicationFiled: October 31, 2006Publication date: May 10, 2007Applicant: SEIKO EPSON CORPORATIONInventors: Kesatoshi TAKEUCHI, Yutaka TAKADA, Shigekazu TAKAGI, Satoshi FUJII, Hiroshi KAMAKURA
-
Publication number: 20070103649Abstract: Task The invention provides an optical source device and a projector including the optical source device, in which a microwave is used to reduce the size, and increase the life span. Means for Resolution The optical source device according to the invention includes a solid high frequency oscillating unit that outputs a high frequency signal, a waveguide that receives the high frequency signal output from the solid high frequency oscillating unit and radiates the received high frequency signal as a microwave, and a light emitting unit that emits light by the microwave radiated from the waveguide unit. A container of the waveguide unit has a space surrounded by reflective surfaces that reflect the microwave radiated from the antenna unit so as to collect the microwave.Type: ApplicationFiled: October 31, 2006Publication date: May 10, 2007Applicant: SEIKO EPSON CORPORATIONInventors: Yutaka Takada, Shigekazu Takagi, Satoshi Fujii, Kesatoshi Fujii
-
Patent number: 7202753Abstract: An power divider and a surface acoustic wave resonator are provided to a feedback path of an amplifier for oscillation. The surface acoustic wave resonator connects an input side of the amplifier and the power divider connects an output side of the amplifier so as to suppress an input power input to the surface acoustic wave resonator and to secure an output power output from an output terminal of the power divider.Type: GrantFiled: July 29, 2004Date of Patent: April 10, 2007Assignee: Seiko Epson CorporationInventor: Yutaka Takada
-
Publication number: 20070069607Abstract: A light-emitting device, includes: an emitter sealed with a gas emitting light caused by a microwave; a high frequency power supply section including a diamond SAW oscillator and outputting a high frequency signal being output from the diamond SAW oscillator to a subsequent stage; and a waveguide unit emitting the high frequency signal being input from the high frequency power supply section towards the emitter as the microwave.Type: ApplicationFiled: September 28, 2006Publication date: March 29, 2007Applicant: SEIKO EPSON CORPORATIONInventors: Hideo KARASAWA, Yoshiaki MATSUMOTO, Masahiro ONUKI, Masayasu SAKUMA, Yutaka TAKADA
-
Publication number: 20060081624Abstract: A high-frequency heating device including: a solid-state oscillator that generates a microwave; an amplifier that amplifies the microwave generated by the solid-state oscillator; an isolator that is connected to a stage subsequent to the amplifier and blocks a reflected wave directed from an object exposed with the microwave; an antenna that irradiates the microwave toward the object; and a metal cavity that traps therein the microwave irradiated to the object.Type: ApplicationFiled: September 28, 2005Publication date: April 20, 2006Inventors: Yutaka Takada, Satoshi Fujii
-
Patent number: 6980061Abstract: The problem of interference and coupling between circuits that arises in reducing the size of a voltage-controlled oscillator by using low temperature co-fired ceramics (LTCC) substrate technology is alleviated. A voltage-controlled oscillator includes an amplifier a surface acoustic wave device 15 that forms a feedback circuit for the amplifier; a frequency adjuster that is provided the feedback circuit and has a filter configuration; a phase shifter 13 including a hybrid coupler having an additional controller that receives a control voltage from an external source and changes a phase in an oscillation loop; an equal power distributor 12 that equally distributes output power in the oscillation loop and outputs the power to the outside of the oscillation loop; and a delay line 16 concentratedly provided a place where coupling or interference does not occur the oscillation loop for correcting a phase condition in the oscillation loop.Type: GrantFiled: May 3, 2004Date of Patent: December 27, 2005Assignees: Seiko Epson Corporation, NGK Insulators, Ltd.Inventors: Yutaka Takada, Kenji Suzuki, Tatsuya Tsuruoka
-
Publication number: 20050057318Abstract: An power divider and a surface acoustic wave resonator are provided to a feedback path of an amplifier for oscillation. The surface acoustic wave resonator connects an input side of the amplifier and the power divider connects an output side of the amplifier so as to suppress an input power input to the surface acoustic wave resonator and to secure an output power output from an output terminal of the power divider.Type: ApplicationFiled: July 29, 2004Publication date: March 17, 2005Inventor: Yutaka Takada
-
Publication number: 20050037804Abstract: A high-frequency module is provided that includes a reception portion that processes a reception signal received by a reception antenna, and a transmission portion that processes a transmission signal to be supplied to a transmission antenna. The reception portion includes a demultiplexer circuit that divides a reception signal received at the reception antenna to two reception lines having different frequency bands from each other. The transmission portion includes power amplifier circuits and a demultiplexer circuit. The high-frequency module is configured so that the demultiplexer circuit and the like included in the reception portion, as well as the power amplifier circuits and the demultiplexer circuit included in the transmission portion, are provided inside a multi-layer substrate.Type: ApplicationFiled: June 30, 2004Publication date: February 17, 2005Inventors: Aritsugu Yajima, Yutaka Takada, Kazuaki Tanaka, Toru Watanabe, Shigekazu Takagi, Makoto Inoguchi