Patents by Inventor Tatsuo Moriya
Tatsuo Moriya 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: 5289452Abstract: A multifunction electronic analog timepiece includes a face and a plurality of indicators positioned on the face for displaying at least two time keeping functions. At least two step motors are provided for driving the plurality of time keeping function indicators. The time keeping function indicators are arbitrarily disposed about the face dependent upon the number of step motors and position of step motors required to drive the indicators. A microcomputer is provided and includes a program memory for storing software instructions for controlling the step motors.Type: GrantFiled: January 22, 1993Date of Patent: February 22, 1994Assignee: Seiko Epson CorporationInventors: Kenji Sakamoto, Akihiko Maruyama, Tatsuo Moriya, Hiroshi Yabe, Takashi Kawaguchi, Masato Yoshino
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Patent number: 5255247Abstract: An integrated circuit for an electronic timepiece includes at least one semiconductor nonvolatile memory device. Reference data can be checked across a pair of output terminals prior to being stored in at least one EPROM to check the accuracy and acceptability of the reference data for driving a motor of the timepiece. The reference data once written into the EPROM serves as control data. Both the reference data and control data are used for controlling at least one function of the timepiece. The control data also can be checked across the output terminals to determine its accuracy and acceptability for driving the motor. Testing of the reference data and control data can be performed on a faster than real time basis.Type: GrantFiled: September 1, 1992Date of Patent: October 19, 1993Assignee: Seiko Epson CorporationInventor: Tatsuo Moriya
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Patent number: 5253229Abstract: An integrated circuit for an electronic timepiece includes at least one semiconductor nonvolatile memory device. Reference data can be checked across a pair of output terminals prior to being stored in at least one EPROM to check the accuracy and acceptability of the reference data for driving a motor of the timepiece. The reference data once written into the EPROM serves as control data. Both the reference data and control data are used for controlling at least one function of the timepiece. The control data also can be checked across the output terminals to determine its accuracy and acceptability for driving the motor. Testing of the reference data and control data can be performed on a faster than real time basis.Type: GrantFiled: September 1, 1992Date of Patent: October 12, 1993Assignee: Seiko Epson CorporationInventor: Tatsuo Moriya
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Patent number: 5195063Abstract: An integrated circuit for an electronic timepiece includes at least one semiconductor nonvolatile memory device. Reference data can be checked across a pair of output terminals prior to being stored in at least one EPROM to check the accuracy and acceptability of the reference data for driving a motor of the timepiece. The reference data once written into the EPROM serves as control data. Both the reference data and control data are used for controlling at least one function of the timepiece. The control data also can be checked across the output terminals to determine its accuracy and acceptability for driving the motor. Testing of the reference data and control data can be performed on a faster than real time basis.Type: GrantFiled: April 5, 1989Date of Patent: March 16, 1993Assignee: Seiko Epson CorporationInventor: Tatsuo Moriya
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Patent number: 5113381Abstract: A multifunction electronic analog timepiece includes a face and a plurality of indicators positioned on the face for displaying at least two time keeping functions. At least two step motors are provided for driving the plurality of time keeping function indicators. The time keeping function indicators are arbitrarily disposed about the face dependent upon the number of step motors and position of step motors required to drive the indicators. A microcomputer is provided and includes a program memory for storing software instructions for controlling the step motors.Type: GrantFiled: May 31, 1991Date of Patent: May 12, 1992Assignee: Seiko Epson CorporationInventors: Kenji Sakamoto, Akihiko Maruyama, Tatsuo Moriya, Hiroshi Yabe, Takashi Kawaguchi, Masato Yoshino
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Patent number: 4876677Abstract: A circuit substrate mounting configuration for mounting an IC chip having a built in semiconductor sensor in an electronic timepiece is provided. The circuit substrate is fixed to a base plate at at least two points spaced as far as possible from the IC chip so that the substrate about the IC chip does not contact other elements of the timepiece.Type: GrantFiled: March 4, 1988Date of Patent: October 24, 1989Assignee: Seiko Epson CorporationInventor: Tatsuo Moriya
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Patent number: 4761771Abstract: An electronic timekeeping apparatus includes a temperature value generating circuit for generating a temperature value, a temperature value converting circuit including a slope adjusting circuit which provides a slope corrected output in accordance with a frequency versus temperature characteristic of the apparatus in response to the temperature value, a pace compensation data circuit for producing pace compensation data corresponding to the slope corrected output, and a pace compensating circuit for compensating pace of the apparatus in accordance with the pace compensation data. An offset adjustment circuit may operate on said temperature value or said slope corrected output.Type: GrantFiled: May 4, 1987Date of Patent: August 2, 1988Assignee: Seiko Epson CorporationInventors: Tatsuo Moriya, Hitomi Aizawa, Kuniharu Natori, Kazumi Kamoi, Hiroshi Yabe
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Patent number: 4615625Abstract: An analog electronic timepiece wherein oscillation of the oscillator circuit is stopped when the watch is placed into a reset mode. This lowers power consumption and provides for greater battery life during shipping and stocking periods. In one embodiment of the invention the oscillator is stopped immediately upon placing the watch into a reset mode. In another embodiment of the invention, cessation of oscillation does not occur until a predetermined delay after reset.Type: GrantFiled: April 24, 1984Date of Patent: October 7, 1986Assignee: Seiko Epson Kabushiki KaishaInventor: Tatsuo Moriya
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Patent number: 4537514Abstract: An electronic analog timepiece provides for elapsed and intermediate split time measurement with hands indicating fractions of a second, seconds and minutes. Hands do not move except by a user stop or split command. Then the hands rapidly move to positions indicating elapsed or split time. Alternatively, conventional continuous indications are provided except when the internal battery nears depletion, or intermittent operation of the hand indicating fractional seconds provides warning that the battery nears depletion. A wristwatch type analog display stopwatch using a plurality of step motors to drive the hands is produced.Type: GrantFiled: June 6, 1983Date of Patent: August 27, 1985Assignee: Kabushiki Kaisha Suwa SeikoshaInventor: Tatsuo Moriya
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Patent number: 4526475Abstract: An electronic analog display timepiece provides multifunctions wherein the hand, or hands, is driven at different frequencies. To prevent erroneous performance of the step motor, an interval longer than the period of damped oscillation of the step motor is provided when the step motor driving frequency changes by synchronizing the lower frequency driving signals with the signal of the highest frequency of the circuit. Alternatively, one pulse of the second frequency signal is eliminated when switching from the first to the second frequency signal.Type: GrantFiled: July 5, 1983Date of Patent: July 2, 1985Assignee: Kabushiki Kaisha Suwa SeikoshaInventor: Tatsuo Moriya
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Patent number: RE38197Abstract: A multifunction electronic analog timepiece includes a face and a plurality of indicators positioned on the face for displaying at least two time keeping functions. At least two step motors are provided for driving the plurality of time keeping function indicators. The time keeping function indicators are arbitrarily disposed about the face dependent upon the number of step motors and position of step motors required to drive the indicators. A microcomputer is provided and includes a program memory for storing software instructions for controlling the step motors.Type: GrantFiled: February 22, 1996Date of Patent: July 22, 2003Assignee: Seiko Epson CorporationInventors: Kenji Sakamoto, Akihiko Maruyama, Tatsuo Moriya, Hiroshi Yabe, Takashi Kawaguchi, Masato Yoshino