Patents by Inventor Akiyoshi Murakami
Akiyoshi Murakami 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: 7715280Abstract: The invention provides a rechargeable electronic timepiece that restarts the operation of a clock circuit by inputting a power source, thereby securely confirming the clock operation. The electronic timepiece includes a first power source (2), a clock circuit (8) connected to the first power source, a power source input detecting circuit (86) for detecting an input of a second power source (3), a switch circuit (7, 9) for connecting the first power source and the second power source, and a control circuit (87) for controlling the switch circuit to connect the first power source and the second power source so that the first power source is charged by the second power source thereby operating the clock circuit when the power source input detecting circuit detects an input of the second power source.Type: GrantFiled: September 19, 2003Date of Patent: May 11, 2010Assignee: Citizen Holdings Co., Ltd.Inventors: Akiyoshi Murakami, Motoki Funahashi, Masahiko Hitomi, Yoichi Nagata
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Patent number: 7701807Abstract: Impact detecting resistors (141), (143) of an impact detecting circuit (104) detect a counter electromotive force of a step motor (105) generated due to an impact. This counter electromotive force is amplified applying a predetermined period and a predetermined chopper-width by a chopper-amplifying waveform shaping circuit (118). Therefore, even a light impact can be detected. Inverters (145), (146) compare these impact detecting signals (S22), (S23) with a threshold value and detect an impact when the signals exceeds the threshold value. A controlling circuit (102) provides a lock pulse to the step motor (105) through signal lines (AA), (BB) when an impact is detected, brakes rotation of a rotor (162) thereby preventing a deviation of the time displayed with a second hand (106).Type: GrantFiled: November 29, 2004Date of Patent: April 20, 2010Assignee: Citizen Holdings Co., Ltd.Inventors: Isao Kitazawa, Akiyoshi Murakami, Haruhiko Higuchi
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Publication number: 20070115760Abstract: Impact detecting resistors (141), (143) of an impact detecting circuit (104) detect a counter electromotive force of a step motor (105) generated due to an impact. This counter electromotive force is amplified applying a predetermined period and a predetermined chopper-width by a chopper-amplifying waveform shaping circuit (118). Therefore, even a light impact can be detected. Inverters (145), (146) compare these impact detecting signals (S22), (S23) with a threshold value and detect an impact when the signals exceeds the threshold value. A controlling circuit (102) provides a lock pulse to the step motor (105) through signal lines (AA), (BB) when an impact is detected, brakes rotation of a rotor (162) thereby preventing a deviation of the time displayed with a second hand (106).Type: ApplicationFiled: November 29, 2004Publication date: May 24, 2007Inventors: Isao Kitazawa, Akiyoshi Murakami, Haruhiko Higuchi
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Patent number: 7113452Abstract: When a stem switch (8) is pulled out, a switch signal forming unit 9 outputs a signal (RS) indicating that effect, a control unit (13) receives the signal (RS) and starts clocking by a timer (13a). The control unit (13) receives a signal (HS) output from an electricity-generation detecting unit (12) within the clocking period, detects the electricity generating operation of an electricity generating unit (10), and outputs a signal (CS) indicating that effect. A narrow pulse forming unit (7) forms a narrow pulse having a width of such a degree that the motor (5) is not driven based on the signal (CS), and outputs the narrow pulse to a motor driving circuit (4). The motor driving circuit (4) flows a fine current through a coil (4a) which drives the motor (5) based on the narrow pulse. An external device detects a variation of the narrow pulse, thereby confirming whether electricity is generated.Type: GrantFiled: September 13, 2001Date of Patent: September 26, 2006Assignee: Citizen Watch Co., Ltd.Inventors: Kenji Fujita, Akiyoshi Murakami, Haruhiko Higuchi, Motoki Funahashi
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Publication number: 20060120221Abstract: The invention provides a rechargeable electronic timepiece that restarts the operation of a clock circuit by inputting a power source, thereby securely confirming the clock operation. The electronic timepiece includes a first power source (2), a clock circuit (8) connected to the first power source, a power source input detecting circuit (86) for detecting an input of a second power source (3), a switch circuit (7, 9) for connecting the first power source and the second power source, and a control circuit (87) for controlling the switch circuit to connect the first power source and the second power source so that the first power source is charged by the second power source thereby operating the clock circuit when the power source input detecting circuit detects an input of the second power source.Type: ApplicationFiled: September 19, 2003Publication date: June 8, 2006Inventors: Akiyoshi Murakami, Motoki Funahashi, Masahiko Hitomi, Yoichi Nagata
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Patent number: 7009914Abstract: In detecting power generation of an electronic timepiece having a conventional power generating unit, voltage output by the power generating unit is limited by output from a storage unit since the power generating unit and the storage means are connected when the power generation state is detected, and voltage equal to or larger than voltage output from the storage unit cannot be detected. An electronic timepiece is provided which can overcome the problem and can check an operation of the power generating unit securely irrespective of the state of the storage means. In an electronic timepiece driven by power stored from a power generating unit (1) into a storage unit (4), the electronic timepiece includes a power generation detecting unit (2) that detects a power generation state of the power generating unit (1) and a switch unit (7) that separates the power generating unit (1) and the storage unit (4) when the power generation state of the power generating unit (1) is detected.Type: GrantFiled: August 29, 2003Date of Patent: March 7, 2006Assignee: Citizen Watch Co., Ltd.Inventors: Haruhiko Higuchi, Akiyoshi Murakami, Motoki Funahashi
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Publication number: 20050249047Abstract: In detecting power generation of an electronic timepiece having a conventional power generating unit, voltage output by the power generating unit is limited by output from a storage unit since the power generating unit and the storage means are connected when the power generation state is detected, and voltage equal to or larger than voltage output from the storage unit cannot be detected. An electronic timepiece is provided which can overcome the problem and can check an operation of the power generating unit securely irrespective of the state of the storage means. In an electronic timepiece driven by power stored from a power generating unit (1) into a storage unit (4), the electronic timepiece includes a power generation detecting unit (2) that detects a power generation state of the power generating unit (1) and a switch unit (7) that separates the power generating unit (1) and the storage unit (4) when the power generation state of the power generating unit (1) is detected.Type: ApplicationFiled: August 29, 2003Publication date: November 10, 2005Inventors: Haruhiko Higuchi, Akiyoshi Murakami, Motoki Funahashi
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Patent number: 6830864Abstract: A method for transferring a transparent conductive film onto one surface of a sheet base material made of a plastic material, wherein the transparent conductive film as an object to be transferred is preliminarily formed on a substrate side which is superior in heat resistance to the plastic material, the transparent conductive film being sandwiched between a peelable layer which can be peeled off at the time of transfer and a protective film for protecting the transparent conductive film on the substrate side which is superior in heat resistance to the plastic material.Type: GrantFiled: December 20, 2001Date of Patent: December 14, 2004Assignee: Kyodo Printing Co., Ltd.Inventors: Ichiro Bekku, Tadahiro Furukawa, Akiyoshi Murakami, Kazumi Arai, Hisashi Sato
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Patent number: 6542438Abstract: A data transmitting/receiving system is configured so as to send data to an analog-type watch, without the need to make direct electrical contact thereto and without influencing the drive of the hands of the watch. When a timing signal that is sent from the watch is received, a data transmitting unit performs transmission. The watch does not receive data at other times, and this receiving operation is performed intermittently.Type: GrantFiled: February 3, 1999Date of Patent: April 1, 2003Assignee: Citizen Watch Co., Ltd.Inventors: Haruhiko Higuchi, Akiyoshi Murakami
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Patent number: 6483781Abstract: A multifunction electronic watch 10 having a large variety of added functions, and providing an electronic watch and drive method therefor that have a high value as a product and a configuration enabling separate use of an energy-saving mode and a function information operating mode, this electronic watch 10 having a reference signal generation means 1, a time information generation means 2, which generates time information TJ based on a reference signal S3R from the reference signal generation means 1, a function information generation means for generating function information FJ, a display drive means 4, which outputs drive signals DRT and DRF for the purpose of displaying the function information FJ and the time information TJ on an appropriate display means, and a display means 5, which displays the function information FJ and the time information TJ based on the drive signals DRT and DRF from the display drive means 4, this electronic watch having an energy-saving operating condition with a power consumpType: GrantFiled: June 13, 2001Date of Patent: November 19, 2002Assignee: Citizen Watch Co., Ltd.Inventors: Kiyotaka Igarashi, Masao Sakuyama, Akiyoshi Murakami, Kenji Shimoda, Noritoshi Suzuki
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Publication number: 20020154575Abstract: When a stem switch (8) is pulled out, a switch signal forming unit 9 outputs a signal (RS) indicating that effect, a control unit (13) receives the signal (RS) and starts clocking by a timer (13a). The control unit (13) receives a signal (HS) output from an electricity-generation detecting unit (12) within the clocking period, detects the electricity generating operation of an electricity generating unit (10), and outputs a signal (CS) indicating that effect. A narrow pulse forming unit (7) forms a narrow pulse having a width of such a degree that the motor (5) is not driven based on the signal (CS), and outputs the narrow pulse to a motor driving circuit (4). The motor driving circuit (4) flows a fine current through a coil (4a) which drives the motor (5) based on the narrow pulse. An external device detects a variation of the narrow pulse, thereby confirming whether electricity is generated.Type: ApplicationFiled: April 30, 2002Publication date: October 24, 2002Inventors: Kenji Fujita, Akiyoshi Murakami, Haruhiko Higuchi, Motoki Funahashi
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Patent number: 6413693Abstract: A method for transferring a transparent conductive film onto one surface of a sheet base material made of a plastic material, wherein the transparent conductive film as an object to be transferred is preliminarily formed on a substrate side which is superior in heat resistance to the plastic material, the transparent conductive film being sandwiched between a peelable layer which can be peeled off at the time of transfer and a protective film for protecting the transparent conductive film on the substrate side which is superior in heat resistance to the plastic material.Type: GrantFiled: April 13, 2000Date of Patent: July 2, 2002Assignee: Kyodo Printing Co., Ltd.Inventors: Ichiro Bekku, Tadahiro Furukawa, Akiyoshi Murakami, Kazumi Arai, Hisashi Sato
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Publication number: 20020055057Abstract: A method for transferring a transparent conductive film onto one surface of a sheet base material made of a plastic material, wherein the transparent conductive film as an object to be transferred is preliminarily formed on a substrate side which is superior in heat resistance to the plastic material, the transparent conductive film being sandwiched between a peelable layer which can be peeled off at the time of transfer and a protective film for protecting the transparent conductive film on the substrate side which is superior in heat resistance to the plastic material.Type: ApplicationFiled: December 20, 2001Publication date: May 9, 2002Inventors: Ichiro Bekku, Tadahiro Furukawa, Akiyoshi Murakami, Kazumi Arai, Hisashi Sato
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Publication number: 20010043512Abstract: A multifunction electronic watch 10 having a large variety of added functions, and providing an electronic watch and drive method therefor that have a high value as a product and a configuration enabling separate use of an energy-saving mode and a function information operating mode, this electronic watch having 10 having a reference signal generation means 1, a time information generation means 2, which generates time information TJ based on a reference signal S3R from the reference signal generation means 1, a function information generation means for generating function information FJ, a display drive means 4, which outputs drive signals DRT and DRF for the purpose of displaying the function information FJ and the time information TJ on an appropriate display means, and a display means 5, which displays the function information FJ and the time information TJ based on the drive signals DRT and DRF from the display drive means 4, this electronic watch having an energy-saving operating condition with a powerType: ApplicationFiled: June 13, 2001Publication date: November 22, 2001Applicant: Citizen Watch Co., Ltd.Inventors: Kiyotaka Igarashi, Masao Sakuyama, Akiyoshi Murakami, Kenji Shimoda, Noritoshi Suzuki
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Publication number: 20010043511Abstract: A data transmitting/receiving system is configured so as to send data to an analog-type watch, without the need to make direct electrical contact thereto and without influencing the drive of the hands of the watch. When a timing signal that is sent from the watch is received, a data transmitting unit performs transmission. The watch does not receive data at other times, and this receiving operation is performed intermittently.Type: ApplicationFiled: February 3, 1999Publication date: November 22, 2001Inventors: HARUHIKO HIGUCHI, AKIYOSHI MURAKAMI
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Patent number: 5959941Abstract: An electronic watch with a chronograph function comprises a motor, a current time counter, a hand position counter, a coincidence detector and a backward/forward movement determining unit. When a chronograph mode is selected, a second hand moves backward or forward to a 12-o'clock (zero) position depending upon its position in a time measurement and indication mode. The electronic watch reliably resumes the time measurement and indication after it functions as a chronograph.Type: GrantFiled: June 28, 1996Date of Patent: September 28, 1999Assignee: Citizen Watch Co., Ltd.Inventors: Akiyoshi Murakami, Kenji Shimoda, Michiko Yagi, Kenji Fujita
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Patent number: 5889736Abstract: In an electronic watch having an electrical generation means, an electrical power storage means which stores electrical energy generated by the electrical generation means, an oscillator circuit, a control section which operates in response to a clock of the oscillator circuit, and a display section which is controlled by the control section, and which displays the time and also selectively displays a function other than the time, a voltage detection means which detects the voltage of the electrical power storage means and a control section management means which, in response to a detection signal from the voltage detection means controls the operation of the control section are provided, and hysteresis is provided between the operation starting point and operation ending point of the control section, which control such operations as storage of hand positions.Type: GrantFiled: September 26, 1996Date of Patent: March 30, 1999Assignee: Citizen Watch Co., Ltd.Inventors: Kenji Fujita, Isamu Kobayashi, Kiyotaka Igarashi, Akiyoshi Murakami
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Patent number: 5881025Abstract: An information display apparatus is provided which has a first display means that displays a first information and a second display means that displays either the first information or second information that differs from the first information, an annunciating means which externally annunciates this condition based on a prescribed signal, when the second display means is displaying the second information, if the second information coincides with the first information being displayed by the first display means, and a switching means to enable selection of at least one of selection, changing, or repeated selection of one of the first information and the second information displayed to be displayed by the second display means.Type: GrantFiled: May 29, 1996Date of Patent: March 9, 1999Assignee: Citizen Watch Co., Ltd.Inventor: Akiyoshi Murakami
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Patent number: 5176971Abstract: A technique related to color filters to be arranged on the light-receiving surface of a color liquid crystal display device, color video camera, and the like. The color filter consists of a substrate (10) and a colored filter layer (12) formed thereon. The colored filter layer (12) comprises, for example, three groups of filter picture elements (14R), 14G, 14B) having spectral characteristics respectively corresponding to red, green and blue. Each group of filter picture elements are made of polyimide resin and dye contained therein. Further, each group of the filter picture elements (R, G, B) are arranged in direct contact with one surface of the substrate (10) without using any intermediate protecting film. The first group of filter picture elements patterned on one surface of the substrate (10) are subjected to heat treatment at a high temperature of about 250.degree. C., for example, to increase their resistance against the solvent.Type: GrantFiled: August 5, 1991Date of Patent: January 5, 1993Assignee: Kyodo Printing Co., Ltd.Inventors: Masayoshi Shimamura, Tadahiro Furukawa, Akiyoshi Murakami, Toshio Haga
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Patent number: RE41686Abstract: In an electronic watch having an electrical generation means, an electrical power storage means which stores electrical energy generated by the electrical generation means, an oscillator circuit, a control section which operates in response to a clock of the oscillator circuit, and a display section which is controlled by the control section, and which displays the time and also selectively displays a function other than the time, a voltage detection means which detects the voltage of the electrical power storage means and a control section management means which, in response to a detection signal from the voltage detection means controls the operation of the control section are provided, and hysteresis is provided between the operation starting point and operation ending point of the control section, which control such operations as storage of hand positions.Type: GrantFiled: September 7, 2000Date of Patent: September 14, 2010Assignee: Citizen Holdings Co., Ltd.Inventors: Kenji Fujita, Isamu Kobayashi, Kiyotaka Igarashi, Akiyoshi Murakami