Patents by Inventor Junji Koyama
Junji Koyama 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: 10684672Abstract: A memory system includes a nonvolatile semiconductor memory, and a controller circuit that includes a physical layer and is configured to store information defining a plurality of low power consumption modes for setting the physical layer to a low power consumption state while controlling the physical layer according to a first standard, and control input and output of signals between the physical layer and the nonvolatile semiconductor memory according to a second standard. The controller circuit selects one of the low power consumption modes based on a data transfer state of the physical layer.Type: GrantFiled: February 27, 2018Date of Patent: June 16, 2020Assignee: TOSHIBA MEMORY CORPORATIONInventors: Junji Koyama, Kenji Ichihara, Keizo Ikeda, Junichi Mishima, Yosuke Yamahara, Takashi Yamaguchi, Takuya Sekine, Akinori Bito, Yoshiki Yasui, Ken Okuyama, Yoshinori Shigeta
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Publication number: 20190086995Abstract: A memory system includes a nonvolatile semiconductor memory, and a controller circuit that includes a physical layer and is configured to store information defining a plurality of low power consumption modes for setting the physical layer to a low power consumption state while controlling the physical layer according to a first standard, and control input and output of signals between the physical layer and the nonvolatile semiconductor memory according to a second standard. The controller circuit selects one of the low power consumption modes based on a data transfer state of the physical layer.Type: ApplicationFiled: February 27, 2018Publication date: March 21, 2019Inventors: Junji KOYAMA, Kenji ICHIHARA, Keizo IKEDA, Junichi MISHIMA, Yosuke YAMAHARA, Takashi YAMAGUCHI, Takuya SEKINE, Akinori BITO, Yoshiki YASUI, Ken OKUYAMA, Yoshinori SHIGETA
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Patent number: 8490501Abstract: A complex sensor comprises a touch sensor and a proximity sensor. The touch sensor comprises a flexible pressure-sensitive sheet covering a fingertip portion. The pressure-sensitive sheet comprises a front surface film and a rear surface film composed of a flexible conductive material, an intermediate film which is sandwiched between the films in a state in which the intermediate film is electrically connected and which is composed of pressure-sensitive conductive rubber, and first to fourth electrode terminals formed on the front surface and rear surface films. The size of a load acting on the pressure-sensitive sheet and the center position of the load can be detected based on the terminal voltage. A through-hole is formed in the pressure-sensitive sheet such that the sensing surface of the proximity sensor is exposed, thus the approach of a holding object can be detected.Type: GrantFiled: May 29, 2008Date of Patent: July 23, 2013Assignee: Harmonic Drive Systems Inc.Inventors: Junji Koyama, Makoto Shimojo, Yoshitomo Mizoguchi
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Patent number: 8368392Abstract: A magnetic encoder includes a multi-pole magnetic detecting unit having a multi-pole magnet. In the multi-pole magnetic detecting unit, first and second magnetic detecting elements that output sinusoidal signals having a 90° phase difference are arranged apart from third and fourth magnetic detecting elements at a mechanical angle of 180° . The first and third magnetic detecting elements are disposed at the same position represented by an electrical angle and output sinusoidal signals of a same phase. The second and fourth magnetic detecting elements are arranged at the same position represented by an electrical angle and output sinusoidal signals of a same phase.Type: GrantFiled: April 24, 2007Date of Patent: February 5, 2013Assignee: Harmonic Drive Systems Inc.Inventors: Kunio Miyashita, Junji Koyama
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Patent number: 8287017Abstract: When dishes are held by means of a robot hand (10), its fixed side engaging plate (13) and movable side engaging finger (14) are moved under horizontal state toward a dish (20) to be handled, and the outer circumferential edge side portion of the dish (20) is inserted between them. The distal end portion (14b) of the movable side engaging finger (14) is then bent by a predetermined amount to the side of the dish (20) and the robot hand (10) is raised. Consequently, the dish (20) is brought into a state where it is held by its own weight between the fixed side engaging plate (13) and the movable side engaging finger (14). Thereafter, the right and left first finger units (15, 16) are bent to the side of the dish (20) and the dish (20) is pushed by their dish pushing faces (15g, 16g), thus bringing about such a state as the dish (20) is held surely between the fixed side engaging plate (13) and the movable side engaging finger (14).Type: GrantFiled: September 10, 2008Date of Patent: October 16, 2012Assignee: Harmonic Drive Systems Inc.Inventors: Junji Koyama, Syunichi Tezuka, Kazuhiro Kosuge, Yasuhisa Hirata, Junya Ichinose
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Patent number: 8159096Abstract: A magnetic absolute sensor for a geared motor comprises a dipole magnet and hall elements. The dipole magnet is fixed to a hollow portion of a hollow rotor shaft. A bracket attached to an end plate of a motor housing is coaxially inserted from the rear end side of the hollow portion. The dipole magnet is inserted from the front side in a cylindrical portion of the bracket. The hall elements are arranged at an interval of 90 degree on the circular inner periphery surface of the cylindrical portion. The hall elements face the circular outer periphery surface of the dipole magnet with a fixed gap therebetween. It is not necessary to increase a motor shaft length in order to incorporate the magnetic absolute sensor. The flux of a motor driven magnet is blocked by the hollow rotor shaft and the hall elements are not adversely affected.Type: GrantFiled: June 22, 2007Date of Patent: April 17, 2012Assignee: Harmonic Drive Systems Inc.Inventors: Shunichi Tezuka, Junji Koyama, Kunio Miyashita
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Publication number: 20120068694Abstract: Before detecting a mechanical angular absolute position ?abs of a rotating shaft (4) within one turn using a two-pole absolute value encoder (2) and a multi-pole absolute value encoder (3) having Pp (Pp: an integer of 3 or more) pole pairs, the rotating shaft (4) is rotated to measure a temporary absolute value ?elt of the multi-pole absolute value encoder (3) in relation to each absolute value ?t of the two-pole absolute value encoder (2), and a temporary pole-pair number (Nx) for a multi-pole magnet is assigned to each absolute value ?t. In actual detecting, an absolute value ?ti of the two-pole absolute value encoder and an absolute value ?elr of the multi-pole absolute value encoder are measured, the temporary pole-pair number (Nx) assigned to the absolute value ?ti is corrected on the basis of an absolute value ?elti of the multi-pole absolute value encoder assigned to the absolute value ?ti and the measured absolute value ?elr, thus calculating a pole-pair number (Nr).Type: ApplicationFiled: April 24, 2007Publication date: March 22, 2012Applicant: HARMONIC DRIVE SYSTEMS INC.Inventors: Muneo Mitamura, Kunio Miyashita, Junji Koyama
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Patent number: 7994749Abstract: A multiple-rotation absolute-value encoder of a geared motor, wherein the geared motor (10) reduces the rotational speed of a motor shaft (12) and takes it out from a gear shaft (14) to drive a machine device (15) in an operating range corresponding to two rotations of the gear shaft (14). The multiple-rotation absolute-value encoder (20) fitted to the geared motor (10) is made up of a gear shaft absolute value encoder (30) for detecting the absolute position of the gear shaft (14) and a load side absolute value encoder (50) having a two-pole magnet (51) and a magnetic sensor (52) rotating at a rotational speed reduced to half the rotational speed of the gear shaft (14) through the magnetic gear (40).Type: GrantFiled: August 8, 2006Date of Patent: August 9, 2011Assignee: Harmonic Drive Systems Inc.Inventors: Kunio Miyashita, Junji Koyama, Muneo Mitamura, Yasuo Sawamura
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Patent number: 7966907Abstract: A finger joint mechanism (1) having two wave gear reduction drives (20, 30) disposed coaxially with each other, in which rotational force of a motor (40) is transmitted to a rotation input shaft (13) common to the drive gears through a driving bevel gear (42) and a driven bevel gear (43). Output shafts (11, 12) are formed integrally with bosses (24, 34) of the cup-like flexible external gears (22, 32) of the wave gear drives (20, 30), and mounting arms (9, 10) of a rotating member (3) are fixedly connected to the output shafts. The wave gear reduction drives, which can be easily reduced in size, are used as the reduction gears for a rotary actuator (5) assembled in the finger joint mechanism. Since the finger joint mechanism uses the two wave gear reduction drives, the rate of increase in torque capacity against the rate of increase in an installation space is much higher than a case where one gear reduction drive with a large model number is used to increase torque capacity of the mechanism.Type: GrantFiled: December 20, 2005Date of Patent: June 28, 2011Assignee: Harmonic Drive Systems Inc.Inventor: Junji Koyama
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Publication number: 20110133502Abstract: When dishes are held by means of a robot hand (10), its fixed side engaging plate (13) and movable side engaging finger (14) are moved under horizontal state toward a dish (20) to be handled, and the outer circumferential edge side portion of the dish (20) is inserted between them. The distal end portion (14b) of the movable side engaging finger (14) is then bent by a predetermined amount to the side of the dish (20) and the robot hand (10) is raised. Consequently, the dish (20) is brought into a state where it is held by its own weight between the fixed side engaging plate (13) and the movable side engaging finger (14). Thereafter, the right and left first finger units (15, 16) are bent to the side of the dish (20) and the dish (20) is pushed by their dish pushing faces (15g, 16g), thus bringing about such a state as the dish (20) is held surely between the fixed side engaging plate (13) and the movable side engaging finger (14).Type: ApplicationFiled: September 10, 2008Publication date: June 9, 2011Inventors: Junji Koyama, Syunichi Tezuka, Kazuhiro Kosuge, Yasuhisa Hirata, Junya Ichinose
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Publication number: 20110111622Abstract: A relay connector is secured to a hollow hole forming member provided with a hollow hole in a hollow rotator so as to be coaxially located in the hollow hole in order to draw out an electric wire group from the side of one end surface in the direction of a rotation central axis line of the hollow rotator to the side of the other end surface by using the hollow hole passing through in the direction of the rotation central axis line in the hollow rotator. A first connection section is formed on one end of the direction of the rotation central axis line of the relay connector and a second connection section is formed on the other end thereof. A first electric wire side connector attached to the end of a first electric wire group is electrically and detachably connected to the first connection section and a second electric wire side connector attached to the end of a second electric wire group is electrically and detachably connected to the second connection section.Type: ApplicationFiled: July 23, 2008Publication date: May 12, 2011Applicant: Harmonic Drive Systems Inc.Inventors: Junji Koyama, Naoki Kanayama
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Publication number: 20110067504Abstract: A complex sensor comprises a touch sensor and a proximity sensor. The touch sensor comprises a flexible pressure-sensitive sheet covering a fingertip portion. The pressure-sensitive sheet comprises a front surface film and a rear surface film composed of a flexible conductive material, an intermediate film which is sandwiched between the films in a state in which the intermediate film is electrically connected and which is composed of pressure-sensitive conductive rubber, and first to fourth electrode terminals formed on the front surface and rear surface films. The size of a load acting on the pressure-sensitive sheet and the center position of the load can be detected based on the terminal voltage. A through-hole is formed in the pressure-sensitive sheet such that the sensing surface of the proximity sensor is exposed, thus the approach of a holding object can be detected.Type: ApplicationFiled: May 29, 2008Publication date: March 24, 2011Applicant: Harmonic Drive Systems Inc.Inventors: Junji Koyama, Makoto Shimojo, Yoshitomo Mizoguchi
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Publication number: 20110025312Abstract: A magnetic encoder includes a multi-pole magnetic detecting unit having a multi-pole magnet. In the multi-pole magnetic detecting unit, first and second magnetic detecting elements that output sinusoidal signals having a 90° phase difference are arranged apart from third and fourth magnetic detecting elements at a mechanical angle of 180°. The first and third magnetic detecting elements are disposed at the same position represented by an electrical angle and output sinusoidal signals of a same phase. The second and fourth magnetic detecting elements are arranged at the same position represented by an electrical angle and output sinusoidal signals of a same phase.Type: ApplicationFiled: April 24, 2007Publication date: February 3, 2011Inventors: Kunio Nagano, Muneo Mitamura, Junji Koyama
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Patent number: 7811091Abstract: A rotary terminal mechanism in which a first electroconductive ring is inserted, under a slightly collapsed state, between the circular internal peripheral surface of a first outside electrode and the circular external peripheral surface of a first inside electrode that are arranged concentrically. The first electroconductive ring is kept contacting the first outside electrode and the first inside electrode by the elastic restoring force. When the first outside electrode and the first inside electrode rotate relatively, the first electroconductive ring rolls along the circular internal peripheral surface and the circular external peripheral surface while being kept pressed against these surfaces by the elastic force. Consequently, electrical connection is formed constantly between them even if the first outside electrode and the first inside electrode rotate relatively. A rotary terminal mechanism of simple structure requiring fewer components and being advantageous to miniaturization can thereby be attained.Type: GrantFiled: July 26, 2006Date of Patent: October 12, 2010Assignee: Harmonic Drive Systems Inc.Inventor: Junji Koyama
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Publication number: 20100176695Abstract: A magnetic absolute sensor for a geared motor comprises a dipole magnet and hall elements. The dipole magnet is fixed to a hollow portion of a hollow rotor shaft. A bracket attached to an end plate of a motor housing is coaxially inserted from the rear end side of the hollow portion. The dipole magnet is inserted from the front side in a cylindrical portion of the bracket. The hall elements are arranged at an interval of 90 degree on the circular inner periphery surface of the cylindrical portion. The hall elements face the circular outer periphery surface of the dipole magnet with a fixed gap therebetween. It is not necessary to increase a motor shaft length in order to incorporate the magnetic absolute sensor. The flux of a motor driven magnet is blocked by the hollow rotor shaft and the hall elements are not adversely affected.Type: ApplicationFiled: June 22, 2007Publication date: July 15, 2010Inventors: Shunichi Tezuka, Junji Koyama, Kunio Miyashita
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Publication number: 20100003836Abstract: A rotary terminal mechanism (1) in which a first electroconductive ring (14) is inserted, under a slightly collapsed state, between the circular internal peripheral surface (81) of a first outside electrode (8) and the circular external peripheral surface (71) of a first inside electrode (7) that are arranged concentrically. The first electroconductive ring (14) is kept contacting the first outside electrode (8) and the first inside electrode (7) by the elastic restoring force. When the first outside electrode (8) and the first inside electrode (7) rotate relatively, the first electroconductive ring (14) rolls along the circular internal peripheral surface (81) and the circular external peripheral surface (71) while being kept pressed against these surfaces by the elastic force. Consequently, electrical connection is formed constantly between them even if the first outside electrode (8) and the first inside electrode (7) rotate relatively.Type: ApplicationFiled: July 26, 2006Publication date: January 7, 2010Inventor: Junji Koyama
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Publication number: 20090249918Abstract: A finger joint mechanism (1) having two wave gear reduction drives (20, 30) disposed coaxially with each other, in which rotational force of a motor (40) is transmitted to a rotation input shaft (13) common to the drive gears through a driving bevel gear (42) and a driven bevel gear (43). Output shafts (11, 12) are formed integrally with bosses (24, 34) of the cup-like flexible external gears (22, 32) of the wave gear drives (20, 30), and mounting arms (9, 10) of a rotating member (3) are fixedly connected to the output shafts. The wave gear reduction drives, which can be easily reduced in size, are used as the reduction gears for a rotary actuator (5) assembled in the finger joint mechanism. Since the finger joint mechanism uses the two wave gear reduction drives, the rate of increase in torque capacity against the rate of increase in an installation space is much higher than a case where one gear reduction drive with a large model number is used to increase torque capacity of the mechanism.Type: ApplicationFiled: December 20, 2005Publication date: October 8, 2009Applicant: HARMONIC DRIVE SYSTEMS INC.Inventor: Junji Koyama
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Publication number: 20090218181Abstract: A small-sized, lightweight servo motor brake device (1) that has a low operation speed for releasing a brake during normal operation is provided, wherein compression coil springs (7) cause a slide plate (6) to be pressed against a brake disc (4) that is securely connected to a motor shaft (2), and a braking state is formed. When a small-sized motor (12) causes a cam disc (8) to rotate in a direction in which a cam follower (10) rolls up from a trough (9b) of a cam surface (9) to a peak (9a), the slide plate (6) moves against the spring force away from the brake disc (4), and the device switches to a rotation-maintaining state in which the braking force has been released.Type: ApplicationFiled: February 12, 2009Publication date: September 3, 2009Applicant: Harmonic Drive Systems Inc.Inventors: Junji Koyama, Naoki Kanayama
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Patent number: 7556299Abstract: A multi-finger grasping mechanism (300), comprising three two-joint finger units (1-1 to 1-3). Each two-joint finger unit further comprises a finger root part (2), a finger root side joint part (5), a finger intermediate part (3), a finger tip side joint part (6), and a finger tip part (4). The finger intermediate part (3) can be swung about the joint axis (5a) of the finger root side joint part (5), and the finger tip part (4) can be swung about the joint axis (6a) of the finger tip side joint part (6). The finger tip part (4) can be swung about the center axis thereof. When a bolt (W) is held by the finger tip part (4) and the finger part (4) is rotated, the tightening operation of the bolt (W) can be performed.Type: GrantFiled: March 30, 2004Date of Patent: July 7, 2009Assignee: Harmonic Drive Systems Inc.Inventor: Junji Koyama
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Publication number: 20090140731Abstract: A multiple-rotation absolute-value encoder of a geared motor, wherein the geared motor (10) reduces the rotational speed of a motor shaft (12) and takes it out from a gear shaft (14) to drive a machine device (15) in an operating range corresponding to the two rotations of the gear shaft (14). The multiple-rotation absolute-value encoder (20) fitted to the geared motor (10) comprises a gear shaft absolute value encoder (30) detecting the absolute position of the gear shaft (14) and a load side absolute value encoder (50) having a two-pole magnet (51) and a magnetic sensor (52) rotating at a rotational speed reduced to half the rotational speed of the gear shaft (14) through the magnetic gear (40). Since the operating range of the machine device (15) corresponds to one rotation of the two-pole magnet (51), the absolute position of the machine device (15) is determined based on an output from the magnetic sensor (52).Type: ApplicationFiled: August 8, 2006Publication date: June 4, 2009Inventors: Kunio Miyashita, Junji Koyama, Muneo Mitamura, Yasuo Sawamura