Patents by Inventor Yasuhiro Honda
Yasuhiro Honda 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: 8789765Abstract: A position control device 1 and a position control method of the present invention are a technology used in a shape memory alloy actuator for moving a movable member using a shape memory alloy member. In controlling the position of the movable member, an instruction value indicating a position of the movable member as a control target is changed to reduce the temperature of a shape memory alloy member when an amount of power supplied to the shape memory alloy member is in excess of a predetermined first threshold value. A drive device and an imaging device C of the present invention include a shape memory alloy actuator and the position control device 1.Type: GrantFiled: May 11, 2009Date of Patent: July 29, 2014Assignee: Konica Minolta Opto, Inc.Inventor: Yasuhiro Honda
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Publication number: 20140192089Abstract: A projector system includes: a position detecting unit that detects a pointed position of a pointer on a projection surface; a drawing unit that performs drawing on the projection surface according to the pointed position detected by the position detecting unit; a height detecting unit that detects a height of a user of a projector; and a display changing unit that changes, according to the user's height detected by the height detecting unit, at least one of a shape of the image projected onto the projection surface and a display position of the image on the projection surface.Type: ApplicationFiled: December 20, 2013Publication date: July 10, 2014Applicant: SEIKO EPSON CORPORATIONInventors: Yasuhiro HONDA, Takashi OZAWA
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Publication number: 20130329438Abstract: An illumination device includes: a sheet-shaped, flexible illumination panel including on its surface a light emitting face being configured to emit light when supplied with electrical power; a main body including a mounting face whereon the illumination panel is to be mounted; and an installation cover to be installed on the main body and including a pressing region pressing the light emitting face of the illumination panel against the mounting face of the main body. With the illumination device, it is possible to achieve desired light distribution characteristics of the sheet-shaped illumination panel.Type: ApplicationFiled: February 9, 2012Publication date: December 12, 2013Applicant: KONICA MINOLTA, INC.Inventors: Junya Wakahara, Nobuya Miki, Masatoshi Yoneyama, Naoki Masazumi, Yasuhiro Honda
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Publication number: 20130182176Abstract: A drive device (30) of the invention supplies, to a shape memory alloy member (15), an electric pulse having a pulse cycle shorter than a predetermined cycle for reading out an image from an imaging element. The drive device (30) having the above configuration is advantageous in preventing or suppressing noise which may affect peripheral circuits resulting from a frequency component of a drive current.Type: ApplicationFiled: July 25, 2011Publication date: July 18, 2013Inventor: Yasuhiro Honda
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Patent number: 8448434Abstract: A shape memory alloy drive device has drive control portion for displacing a shape memory alloy up to a target displacement value by applying a voltage or an electric current to the shape memory alloy by servo control, and also has contact detection portion for detecting a predetermined change in a drive control value, or, for example, a sharp increase in the drive control value, representing the amount of the voltage of the electric current applied by the drive control portion. When detecting a predetermined change, the contact detection portion determines that a movable portion having a lens etc. mounted thereon is in contact with a stationary mechanism. The shape memory alloy drive device further has drive limiting portion which, when the determination described above is made, causes the drive control portion to limit the target displacement value within a predetermined range.Type: GrantFiled: November 11, 2008Date of Patent: May 28, 2013Assignee: Konica Minolta Opto, Inc.Inventor: Yasuhiro Honda
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Patent number: 8434303Abstract: A storing section (70) stores a second initial contact instruction value, which is predefined as an instruction value for positioning a movable portion (5) to a second contact position where the movable portion (5) is contacted with a stopper (8), and an initial standby instruction value, which is predefined as an instruction value for positioning the movable portion (5) to a specified standby position within a moving range of the movable portion (5). A correcting section (42) calculates an actual standby instruction value by correcting the initial standby instruction value, based on a second actual contact instruction value obtained when a contact detection section (41) has detected that the movable portion (5) is positioned to the second contact position, and the second initial contact instruction value. A setting section (43) sets a standby position corresponding to the actual standby instruction value, as an actual standby position of the movable portion (5).Type: GrantFiled: January 14, 2009Date of Patent: May 7, 2013Assignee: Konica Minolta Opto, Inc.Inventors: Yasuhiro Honda, Yasutaka Tanimura, Natsuko Shiota, Yoshihiro Hara
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Patent number: 8351141Abstract: A drive device includes a setting unit 12 for setting a control value using a control value-displacement characteristic at a predetermined reference temperature showing a relationship between a control value used to position a movable unit 5 and a displacement of the movable unit 5; a drive unit 20 for supplying drive power corresponding to the control value set by the setting unit 12 to a shape-memory alloy 1 and causing the shape-memory alloy 1 to expand or contract, thereby positioning the movable unit 5; and a correction unit 13 for correcting the control value so as to correct a position shift of the movable unit 5 from a target position resulting from a difference between a control value-displacement characteristic at an ambient temperature and a control value-displacement characteristic at the reference temperature based on the ambient temperature detected by a temperature detection unit 11.Type: GrantFiled: January 22, 2009Date of Patent: January 8, 2013Assignee: Konica Minolta Opto, Inc.Inventors: Yasutaka Tanimura, Yasuhiro Honda, Natsuko Shiota, Yoshihiro Hara
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Patent number: 8339073Abstract: A shape memory alloy driver comprises a displacement detection portion, a drive control portion, and a compensation calculation portion. The displacement detection portion detects displacement of a shape memory alloy based on a resistance value etc. detected from the shape memory alloy. The drive control portion applies a voltage or current to the shape memory alloy by servo control to thereby displace the shape memory alloy to a target displacement value fed from a microcomputer etc. The compensation calculation portion calculates a compensated displacement value from the detected displacement value and a variation—attributable to the environment temperature—of the drive control value which the drive control portion uses for controlling the voltage or current. Having been fed with the compensated displacement value, the drive control portion varies the drive control value such that the compensated displacement value is equal to the target displacement value.Type: GrantFiled: November 25, 2008Date of Patent: December 25, 2012Assignee: Konica Minolta Opto, Inc.Inventor: Yasuhiro Honda
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Patent number: 8068167Abstract: In a shape memory alloy actuator driving device, a predetermined constant current is applied to a shape memory alloy member as a retrieval signal to detect a terminal voltage of the shape memory alloy member, and a detection result of the terminal voltage is compared with a target voltage value to be calculated based on a target resistance value of the shape memory alloy member and a value of the constant current to cause a driving circuit to output, to the shape memory alloy member, a drive current that makes the detection result substantially equal to the target voltage value.Type: GrantFiled: July 2, 2008Date of Patent: November 29, 2011Assignee: Konica Minolta Opto, Inc.Inventors: Yasuhiro Honda, Yasutaka Tanimura
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Publication number: 20110242398Abstract: A driving circuit (21) of a shape memory alloy actuator of the present invention measures by a measurement part a parameter value corresponding to a target position of a moving part that is displaced by being driven on account of the expansion and contraction of an SMA (15), which expands and contracts with temperature changes and which exhibits hysteresis in a parameter-distortion characteristic relating to the expansion and contraction, while the temperature of the SMA (15) is being raised or lowered. The driving circuit (21) sets the measured parameter value as a target parameter. The temperature of the SMA (15) is raised or lowered such that the parameter value measured by the measurement part passes the target parameter, before the crystal phase of the SMA (15) becomes a martensitic phase. Thereafter, the temperature of the SMA (15) is raised or lowered again such that the parameter value measured by the measurement part reaches the target parameter.Type: ApplicationFiled: December 8, 2009Publication date: October 6, 2011Applicant: Konica Minolta Opto, Inc.Inventors: Yasuhiro Honda, Nobuya Miki
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Publication number: 20110071663Abstract: A position control device 1 and a position control method of the present invention are a technology used in a shape memory alloy actuator for moving a movable member using a shape memory alloy member. In controlling the position of the movable member, an instruction value indicating a position of the movable member as a control target is changed to reduce the temperature of a shape memory alloy member when an amount of power supplied to the shape memory alloy member is in excess of a predetermined first threshold value. A drive device and an imaging device C of the present invention include a shape memory alloy actuator and the position control device 1.Type: ApplicationFiled: May 11, 2009Publication date: March 24, 2011Applicant: Konica Minolta Opto, Inc.Inventor: Yasuhiro Honda
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Publication number: 20110032628Abstract: A drive device includes a setting unit 12 for setting a control value using a control value-displacement characteristic at a predetermined reference temperature showing a relationship between a control value used to position a movable unit 5 and a displacement of the movable unit 5; a drive unit 20 for supplying drive power corresponding to the control value set by the setting unit 12 to a shape-memory alloy 1 and causing the shape-memory alloy 1 to expand or contract, thereby positioning the movable unit 5; and a correction unit 13 for correcting the control value so as to correct a position shift of the movable unit 5 from a target position resulting from a difference between a control value-displacement characteristic at an ambient temperature and a control value-displacement characteristic at the reference temperature based on the ambient temperature detected by a temperature detection unit 11.Type: ApplicationFiled: January 22, 2009Publication date: February 10, 2011Applicant: Konica Minolta Opto Inc.Inventors: Yasutaka Tanimura, Yasuhiro Honda, Natsuko Shiota, Yoshihiro Hara
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Publication number: 20110031924Abstract: A shape memory alloy driver comprises a displacement detection portion, a drive control portion, and a compensation calculation portion. The displacement detection portion detects displacement of a shape memory alloy based on a resistance value etc. detected from the shape memory alloy. The drive control portion applies a voltage or current to the shape memory alloy by servo control to thereby displace the shape memory alloy to a target displacement value fed from a microcomputer etc. The compensation calculation portion calculates a compensated displacement value from the detected displacement value and a variation—attributable to the environment temperature—of the drive control value which the drive control portion uses for controlling the voltage or current. Having been fed with the compensated displacement value, the drive control portion varies the drive control value such that the compensated displacement value is equal to the target displacement value.Type: ApplicationFiled: October 21, 2010Publication date: February 10, 2011Applicant: Konica Minolta Opto, Inc.Inventor: Yasuhiro HONDA
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Publication number: 20100320943Abstract: A shape memory alloy driver comprises a displacement detection portion, a drive control portion, and a compensation calculation portion. The displacement detection portion detects displacement of a shape memory alloy based on a resistance value etc. detected from the shape memory alloy. The drive control portion applies a voltage or current to the shape memory alloy by servo control to thereby displace the shape memory alloy to a target displacement value fed from a microcomputer etc. The compensation calculation portion calculates a compensated displacement value from the detected displacement value and a variation—attributable to the environment temperature—of the drive control value which the drive control portion uses for controlling the voltage or current. Having been fed with the compensated displacement value, the drive control portion varies the drive control value such that the compensated displacement value is equal to the target displacement value.Type: ApplicationFiled: November 25, 2008Publication date: December 23, 2010Applicant: Konica Minolta Opto, Inc.Inventor: Yasuhiro Honda
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Publication number: 20100296183Abstract: A storing section (70) stores a second initial contact instruction value, which is predefined as an instruction value for positioning a movable portion (5) to a second contact position where the movable portion (5) is contacted with a stopper (8), and an initial standby instruction value, which is predefined as an instruction value for positioning the movable portion (5) to a specified standby position within a moving range of the movable portion (5). A correcting section (42) calculates an actual standby instruction value by correcting the initial standby instruction value, based on a second actual contact instruction value obtained when a contact detection section (41) has detected that the movable portion (5) is positioned to the second contact position, and the second initial contact instruction value. A setting section (43) sets a standby position corresponding to the actual standby instruction value, as an actual standby position of the movable portion (5).Type: ApplicationFiled: January 14, 2009Publication date: November 25, 2010Inventors: Yasuhiro Honda, Yasutaka Tanimura, Natsuko Shiota, Yoshihiro Hara
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Publication number: 20100257859Abstract: A shape memory alloy drive device has drive control portion for displacing a shape memory alloy up to a target displacement value by applying a voltage or an electric current to the shape memory alloy by servo control, and also has contact detection portion for detecting a predetermined change in a drive control value, or, for example, a sharp increase in the drive control value, representing the amount of the voltage of the electric current applied by the drive control portion. When detecting a predetermined change, the contact detection portion determines that a movable portion having a lens etc. mounted thereon is in contact with a stationary mechanism. The shape memory alloy drive device further has drive limiting portion which, when the determination described above is made, causes the drive control portion to limit the target displacement value within a predetermined range.Type: ApplicationFiled: November 11, 2008Publication date: October 14, 2010Applicant: Konica Minolta Opto, Inc.Inventor: Yasuhiro Honda
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Publication number: 20090009656Abstract: In a shape memory alloy actuator driving device, a predetermined constant current is applied to a shape memory alloy member as a retrieval signal to detect a terminal voltage of the shape memory alloy member, and a detection result of the terminal voltage is compared with a target voltage value to be calculated based on a target resistance value of the shape memory alloy member and a value of the constant current to cause a driving circuit to output, to the shape memory alloy member, a drive current that makes the detection result substantially equal to the target voltage value.Type: ApplicationFiled: July 2, 2008Publication date: January 8, 2009Applicant: Konica Minolta Opto, Inc.Inventors: Yasuhiro Honda, Yasutaka Tanimura
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Patent number: 7239586Abstract: An optical disk drive and recording power determination method determine the optimum power with consideration for the recording state of a base layer track when determining the optimum power by test recording before recording user data. After recording at a second recording power that is higher than a first recording power by a specific amount, recording is performed at a third recording power that is lower than the first recording power by a specific amount, and the first recording power is set to the recording power for data recording when a specified playback signal quality is achieved.Type: GrantFiled: July 27, 2001Date of Patent: July 3, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Mamoru Shoji, Toshiya Akagi, Atsushi Nakamura, Ariaki Ito, Yukihiro Yamasaki, Yasuhiro Honda, Takashi Ishida, Shinichi Konishi, Yuji Hisakado
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Patent number: 6710850Abstract: A reticle stage moves while holding the reticle. A stage controller detects the acceleration of the reticle stage based on the results of detection of an laser interference system. A main control system controls movement of the reticle stage so that the acceleration detected by the reticle stage becomes within a predetermined range of acceleration of the reticle stage where offset will not occur in the reticle. An image of the pattern formed on the reticle is transferred to a wafer through a projection optical system while synchronously moving the reticle and the wafer.Type: GrantFiled: December 20, 2001Date of Patent: March 23, 2004Assignee: Nikon CorporationInventors: Atsushi Yamaguchi, Hideaki Sakamoto, Yasuhiro Honda
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Publication number: 20040022166Abstract: An object is to determine the optimum power with consideration for the recording state of a base layer track when determining the optimum power by test recording before recording user data. After recording at a second recording power higher by a specific amount than a first recording power, recording is done at a third recording power lower by a specific amount than the first recording power, and the first recording power is set to the recording power for data recording when a specified playback signal quality is achieved.Type: ApplicationFiled: July 15, 2003Publication date: February 5, 2004Inventors: Mamoru Shoji, Toshiya Akagi, Atsushi Nakamura, Ariaki Ito, Yukihiro Yamasaki, Yasuhiro Honda, Takashi Ishida, Shinichi Konishi, Yuji Hisakado