Patents by Inventor Fumiaki Miyahara
Fumiaki Miyahara 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: 20220317629Abstract: An electronic watch of the present disclosure includes a power generation device having a rotating weight rotating about a rotary shaft, and configured to convert mechanical energy obtained by rotation of the rotating weight into electrical energy, a clocking device configured to clock time, and an antenna disposed on an inner side in a radial direction of the rotating weight than a rotational trajectory of an outer peripheral edge of the rotating weight in plan view viewed from an axial direction of the rotary shaft, and configured to be capable of receiving a long wave standard radio wave, wherein the rotating weight has an opening portion or a notch portion disposed at a position that enables the rotating weight to overlap with the antenna in plan view, and does not cover the entire antenna in plan view regardless of a rotational position.Type: ApplicationFiled: March 29, 2022Publication date: October 6, 2022Inventor: Fumiaki MIYAHARA
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Publication number: 20220269224Abstract: Provided is an electronic timepiece including: an antenna configured to receive a standard radio wave, a pointer, a motor configured to drive the pointer, a circuit board having a front surface mounted with a semiconductor device including an active region, and a magnetic shield plate disposed at a back surface side of the circuit board, the magnetic shield plate having a shape that overlaps at least a portion of the motor and does not overlap the active region of the semiconductor device in plan view as viewed in a direction orthogonal to the front surface of the circuit board.Type: ApplicationFiled: February 21, 2022Publication date: August 25, 2022Inventors: Saori HASHIZUME, Fumiaki MIYAHARA
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Patent number: 10088808Abstract: An electronic timepiece includes a date indicator that is an analog display member, a date indicator motor that drives the date indicator, a display position storage that is a nonvolatile memory that stores position information on the date indicator, a receiver that is a time information acquirer that externally acquires time information, and a control section that outputs a drive signal to the date indicator motor and stores the position information on the date indicator in the display position storage whenever the date indicator motor activated with the drive signal drives the date indicator.Type: GrantFiled: March 31, 2016Date of Patent: October 2, 2018Assignee: Seiko Epson CorporationInventor: Fumiaki Miyahara
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Patent number: 9483030Abstract: A receipt time determination unit of a control unit in a control circuit modifies a receipt time in a case where a gain determined by an AGC circuit in a receiver circuit unit is not less than a reference value, where it is discerned that there is an error in a time code by an error discernment unit of a TCO decoder unit in the control circuit unit, and where it is discerned that data of the time code is impacted by interference waves by an interference wave discernment unit of the TCO decoder unit.Type: GrantFiled: March 10, 2015Date of Patent: November 1, 2016Assignee: Seiko Epson CorporationInventor: Fumiaki Miyahara
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Publication number: 20160313699Abstract: An electronic timepiece includes a date indicator that is an analog display member, a date indicator motor that drives the date indicator, a display position storage that is a nonvolatile memory that stores position information on the date indicator, a receiver that is a time information acquirer that externally acquires time information, and a control section that outputs a drive signal to the date indicator motor and stores the position information on the date indicator in the display position storage whenever the date indicator motor activated with the drive signal drives the date indicator.Type: ApplicationFiled: March 31, 2016Publication date: October 27, 2016Inventor: Fumiaki MIYAHARA
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Publication number: 20150268637Abstract: A receipt time determination unit of a control unit in a control circuit modifies a receipt time in a case where a gain determined by an AGC circuit in a receiver circuit unit is not less than a reference value, where it is discerned that there is an error in a time code by an error discernment unit of a TCO decoder unit in the control circuit unit, and where it is discerned that data of the time code is impacted by interference waves by an interference wave discernment unit of the TCO decoder unit.Type: ApplicationFiled: March 10, 2015Publication date: September 24, 2015Inventor: Fumiaki MIYAHARA
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Patent number: 8072844Abstract: An electronic timepiece with an internal antenna has an antenna that has an elongated magnetic core formed from a magnetic body and a coil wound around the magnetic core, and can receive external wireless information, the magnetic core having a coil winding part to which the coil is wound in the lengthwise center part of the magnetic core, and a pair of lead parts extending from both ends of the coil winding part; a module that houses the antenna and processes the external wireless information; and a magnetic member that is positioned with a predetermined gap between the magnetic member and the lead part at a position that is not superposed on a coil-overlapping area that overlaps the coil winding part of the antenna and is superposed on at least a part of a lead-overlapping area that overlaps the pair of lead parts when the electronic timepiece with internal antenna is viewed in plan view from the timepiece thickness direction of the electronic timepiece with internal antenna.Type: GrantFiled: January 29, 2009Date of Patent: December 6, 2011Assignee: Seiko Epson CorporationInventor: Fumiaki Miyahara
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Patent number: 7720452Abstract: A reception circuit can receive a plurality of standard time signals and has a reception means for selectively receiving and demodulating any one of the plural standard time signals, and a control means for outputting a control signal that controls the reception means. The reception means includes a signal amplifier unit for amplifying a reception signal representing the received standard time signal; a signal extraction unit for extracting a signal of a specific frequency from the amplified reception signal; a rectifier unit for rectifying the extracted signal of the specific frequency; and a demodulation unit for demodulating the rectified signal of the specific frequency.Type: GrantFiled: June 14, 2007Date of Patent: May 18, 2010Assignee: Seiko Epson CorporationInventors: Fumiaki Miyahara, Teruhiko Fujisawa
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Publication number: 20090201769Abstract: An electronic timepiece with an internal antenna has an antenna that has an elongated magnetic core formed from a magnetic body and a coil wound around the magnetic core, and can receive external wireless information, the magnetic core having a coil winding part to which the coil is wound in the lengthwise center part of the magnetic core, and a pair of lead parts extending from both ends of the coil winding part; a module that houses the antenna and processes the external wireless information; and a magnetic member that is positioned with a predetermined gap between the magnetic member and the lead part at a position that is not superposed on a coil-overlapping area that overlaps the coil winding part of the antenna and is superposed on at least a part of a lead-overlapping area that overlaps the pair of lead parts when the electronic timepiece with internal antenna is viewed in plan view from the timepiece thickness direction of the electronic timepiece with internal antenna.Type: ApplicationFiled: January 29, 2009Publication date: August 13, 2009Applicant: SEIKO EPSON CORPORATIONInventor: Fumiaki Miyahara
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Publication number: 20090201771Abstract: An electronic timepiece with an internal antenna includes an outside case including a metal back cover, an antenna for receiving external radio frequency information, the antenna including a magnetic core that is long in one direction and is made from a magnetic material, and a coil that is wound around the magnetic core, a reception processor that processes the external radio frequency information received by the antenna, a module that houses the antenna and the reception processor and is housed inside the outside case, and a metal magnetic foil member that has greater magnetic permeability than the back cover and is positioned outside at least the lead-facing areas opposite the lead parts on the inside surface of the back cover facing the module. The magnetic core has a coil winding part around which is wound the coil positioned in the middle part in the lengthwise direction, and a pair of lead parts projecting from both sides of the coil winding part.Type: ApplicationFiled: January 29, 2009Publication date: August 13, 2009Applicant: SEIKO EPSON CORPORATIONInventor: Fumiaki Miyahara
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Publication number: 20080014887Abstract: A reception circuit can receive a plurality of standard time signals and has a reception means for selectively receiving and demodulating any one of the plural standard time signals, and a control means for outputting a control signal that controls the reception means. The reception means includes a signal amplifier unit for amplifying a reception signal representing the received standard time signal; a signal extraction unit for extracting a signal of a specific frequency from the amplified reception signal; a rectifier unit for rectifying the extracted signal of the specific frequency; and a demodulation unit for demodulating the rectified signal of the specific frequency.Type: ApplicationFiled: June 14, 2007Publication date: January 17, 2008Applicant: SEIKO EPSON CORPORATIONInventors: Fumiaki Miyahara, Teruhiko Fujisawa
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Patent number: 7095679Abstract: In an analog electrical timepiece with a motor coil, when an external operating member is in a prescribed operating condition, the operating mode of the analog electrical timepiece is set to the data receive mode. Next, the analog timepiece generates a synchronization signal which is in synchronized to an external synchronization signal that is input from outside. Then, the analog electrical timepiece, when the operating mode is the data receive mode by the detection circuit, based on a synchronization signal and a data voltage signal that is a voltage signal induced around the motor coil by a data signal input from outside, generates and outputs a receive data.Type: GrantFiled: October 6, 2004Date of Patent: August 22, 2006Assignee: Seiko Epson CorporationInventors: Teruhiko Fujisawa, Takashi Kawaguchi, Fumiaki Miyahara
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Patent number: 7075859Abstract: A watch has a crown for manual time adjustment, a receiver for receiving current time update signals by radio transmission, an internal counter for counting the passage of time according to an internal oscillator, and time display hands. The watch preferably does not have a means for determining the position of its time display hands and therefore relies on user intervention for roughly correlating its time display hands to its internal counter. Preferably, the user begins a manual time correction operation when the second hand is at a predetermined position between 0-60 seconds. When the crown is pushed in, the seconds count value of the internal counter is reset to the predetermined position, and the watch waits for reception of a current time radio signal. When a radio signal is successfully received, the received seconds value is compared to the seconds count in the internal counter.Type: GrantFiled: March 30, 2004Date of Patent: July 11, 2006Assignee: Seiko Epson CorporationInventors: Fumiaki Miyahara, Eisaku Shimizu
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Publication number: 20060114750Abstract: A timepiece includes pointers, motors for driving the pointers, a pointer position detector for detecting the positions of the pointers, a control unit, an electricity storage unit as a power supply, and a voltage detector for detecting the power supply voltage. The control unit controls the pointer position detection by means of the pointer position detector on the basis of the power supply voltage detected by the voltage detector. Therefore, the pointer position detector can be halted when the power supply voltage decreases to less than a specific voltage, and the pointer position detector can be driven while the power supply voltage is low.Type: ApplicationFiled: November 28, 2005Publication date: June 1, 2006Applicant: Seiko Epson CorporationInventors: Kenji Iida, Fumiaki Miyahara, Kunio Koike, Eisaku Shimizu
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Patent number: 6933797Abstract: This oscillation circuit includes a crystal oscillator and a main circuit portion connected by a signal path to the crystal oscillator and driven by the crystal oscillator. The main circuit portion is provided with a DC-cutting capacitor that galvanically separates the signal path between the input side of an inverter that is connected by the signal path to the crystal oscillator and an input terminal Xin of the signal path. A potential stabilization circuit is also provided, connecting the input terminal Xin of the signal path to the output side of the inverter through a resistance element.Type: GrantFiled: July 9, 2003Date of Patent: August 23, 2005Assignee: Seiko Epson CorporationInventors: Fumiaki Miyahara, Kunio Koike, Takashi Kawaguchi, Shinji Nakamiya
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Publication number: 20050041533Abstract: In an analog electrical timepiece with a motor coil, when an external operating member is in a prescribed operating condition, the operating mode of the analog electrical timepiece is set to the data receive mode. Next, the analog timepiece generates a synchronization signal which is in synchronized to an external synchronization signal that is input from outside. Then, the analog electrical timepiece, when the operating mode is the data receive mode by the detection circuit, based on a synchronization signal and a data voltage signal that is a voltage signal induced around the motor coil by a data signal input from outside, generates and outputs a receive data.Type: ApplicationFiled: October 6, 2004Publication date: February 24, 2005Inventors: Teruhiko Fujisawa, Takashi Kawaguchi, Fumiaki Miyahara
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Patent number: 6850468Abstract: In an analog electrical timepiece with a motor coil, when an external operating member is in a prescribed operating condition, the operating mode of the analog electrical timepiece is set to the data receive mode. Next, the analog timepiece generates a synchronization signal which is in synchronized to an external synchronization signal that is input from outside. Then, the analog electrical timepiece, when the operating mode is the data receive mode by the detection circuit, based on a synchronization signal and a data voltage signal that is a voltage signal induced around the motor coil by a data signal input from outside, generates and outputs a receive data.Type: GrantFiled: November 5, 2002Date of Patent: February 1, 2005Assignee: Seiko Epson CorporationInventors: Teruhiko Fujisawa, Takashi Kawaguchi, Fumiaki Miyahara
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Publication number: 20040228219Abstract: A watch has a crown for manual time adjustment, a receiver for receiving current time update signals by radio transmission, an internal counter for counting the passage of time according to an internal oscillator, and time display hands. The watch preferably does not have a means for determining the position of its time display hands and therefore relies on user intervention for roughly correlating its time display hands to its internal counter. Preferably, the user begins a manual time correction operation when the second hand is at a predetermined position between 0-60 seconds. When the crown is pushed in, the seconds count value of the internal counter is reset to the predetermined position, and the watch waits for reception of a current time radio signal. When a radio signal is successfully received, the received seconds value is compared to the seconds count in the internal counter.Type: ApplicationFiled: March 30, 2004Publication date: November 18, 2004Inventors: Fumiaki Miyahara, Eisaku Shimizu
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Publication number: 20040075508Abstract: This oscillation circuit includes a crystal oscillator and a main circuit portion connected by a signal path to the crystal oscillator and driven by the crystal oscillator. The main circuit portion is provided with a DC-cutting capacitor that galvanically separates the signal path between the input side of an inverter that is connected by the signal path to the crystal oscillator and an input terminal Xin of the signal path. A potential stabilization circuit is also provided, connecting the input terminal Xin of the signal path to the output side of the inverter through a resistance element.Type: ApplicationFiled: July 9, 2003Publication date: April 22, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Fumiaki Miyahara, Kunio Koike, Takashi Kawaguchi, Shinji Nakamiya
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Publication number: 20030112708Abstract: In an analog electrical timepiece with a motor coil, when an external operating member is in a prescribed operating condition, the operating mode of the analog electrical timepiece is set to the data receive mode. Next, the analog timepiece generates a synchronization signal which is in synchronized to an external synchronization signal that is input from outside. Then, the analog electrical timepiece, when the operating mode is the data receive mode by the detection circuit, based on a synchronization signal and a data voltage signal that is a voltage signal induced around the motor coil by a data signal input from outside, generates and outputs a receive data.Type: ApplicationFiled: November 5, 2002Publication date: June 19, 2003Inventors: Teruhiko Fujisawa, Takashi Kawaguchi, Fumiaki Miyahara