Patents by Inventor Yoshihiro Ikawa
Yoshihiro Ikawa 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).
-
Patent number: 11353883Abstract: A carrier includes a body, a sensor, and an output unit. The body has the ability to travel autonomously and includes a holding mechanism for holding a burden. The sensor is provided for the body and detects a situation surrounding the body. The output unit outputs detected information, collected by the sensor, about the situation to a management device that manages operation of another carrier.Type: GrantFiled: January 9, 2019Date of Patent: June 7, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoshihiro Ikawa, Hiroshi Shirouzu, Osamu Mizuno
-
Patent number: 11320831Abstract: Disclosed herein is a mover including an object detecting unit and either a masking processing unit or a transmission restricting unit as an additional processing unit. The object detecting unit detects an object based on a reception signal output from a receiver unit by having a transmitter unit transmit a scanning wave and by having the receiver unit receive a reflected wave, which is a component, reflected from the object, of the scanning wave. The masking processing unit performs masking processing of masking, in accordance with a timing at which, and/or a direction of incidence in which, a disturbance wave, not depending on the scanning wave, is incident on the receiver unit, a portion of the reception signal output from the receiver unit. The transmission restricting unit restricts a transmission range in which the transmitter unit transmits the scanning wave.Type: GrantFiled: December 17, 2018Date of Patent: May 3, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hiroshi Shirouzu, Yoshihiro Ikawa, Osamu Mizuno
-
Patent number: 10386266Abstract: An optical inspection device includes: an LED; a chart; a collimator; and a mirror. The LED irradiates the chart with light to deliver light rays to the collimator as on-axis light rays. This allows a pattern on the chart to be projected onto a center of an image sensor through the collimator and an optical system under inspection. The mirror reflects light rays delivered to the mirror through the collimator among the on-axis light rays. This allows the pattern on the chart to be projected onto a periphery of the image sensor through the optical system under inspection.Type: GrantFiled: April 24, 2018Date of Patent: August 20, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoshihiro Ikawa, Hironobu Chiba, Yoshihiro Ueno
-
Publication number: 20190243374Abstract: Disclosed herein is a carrier including a body, a sensor, and an output unit. The body has the ability to travel autonomously and includes a holding mechanism for holding a burden. The sensor is provided for the body and detects a situation surrounding the body. The output unit outputs detected information, collected by the sensor, about the situation to a management device that manages operation of another carrier.Type: ApplicationFiled: January 9, 2019Publication date: August 8, 2019Inventors: Yoshihiro IKAWA, Hiroshi SHIROUZU, Osamu MIZUNO
-
Publication number: 20190227559Abstract: Disclosed herein is a mover including an object detecting unit and either a masking processing unit or a transmission restricting unit as an additional processing unit. The object detecting unit detects an object based on a reception signal output from a receiver unit by having a transmitter unit transmit a scanning wave and by having the receiver unit receive a reflected wave, which is a component, reflected from the object, of the scanning wave. The masking processing unit performs masking processing of masking, in accordance with a timing at which, and/or a direction of incidence in which, a disturbance wave, not depending on the scanning wave, is incident on the receiver unit, a portion of the reception signal output from the receiver unit. The transmission restricting unit restricts a transmission range in which the transmitter unit transmits the scanning wave.Type: ApplicationFiled: December 17, 2018Publication date: July 25, 2019Inventors: Hiroshi SHIROUZU, Yoshihiro IKAWA, Osamu MIZUNO
-
Publication number: 20180238769Abstract: An optical inspection device comprises: an LED; a chart; a collimator; and a mirror. The LED irradiates the chart with light to deliver light rays to the collimator as on-axis light rays. This allows a pattern on the chart to be projected onto a center of an image sensor through the collimator and an optical system under inspection. The mirror reflects light rays delivered to the mirror through the collimator among the on-axis light rays. This allows the pattern on the chart to be projected onto a periphery of the image sensor through the optical system under inspection.Type: ApplicationFiled: April 24, 2018Publication date: August 23, 2018Inventors: YOSHIHIRO IKAWA, HIRONOBU CHIBA, YOSHIHIRO UENO
-
Patent number: 8254220Abstract: In an objective lens actuator of an optical disk drive and the like, variations in the fixed end positions of wires serving as suspensions are reduced and tilt characteristics are improved. Terminal plates 20 fixed to a lens holder are tilted relative to wires 13 for supporting the lens holder with elasticity, and are soldered at the edges of the terminal plates 20, so that variations in the fixed end positions of the wires 13 are reduced.Type: GrantFiled: June 11, 2009Date of Patent: August 28, 2012Assignee: Panasonic CorporationInventors: Yoshihiro Ikawa, Mamoru Morita
-
Patent number: 7948696Abstract: In an objective lens actuator of an optical disk drive and the like, variations in the fixed end positions of wires serving as suspensions are reduced and tilt characteristics are improved. When wires 13 are fixed by soldering, a deformation caused by soldering on the wires 13 is minimized by providing heat absorbing members 25 and 26 which hold the wires 13 near soldering positions to absorb soldering heat.Type: GrantFiled: June 11, 2009Date of Patent: May 24, 2011Assignee: Panasonic CorporationInventors: Yoshihiro Ikawa, Mamoru Morita
-
Publication number: 20090310448Abstract: In an objective lens actuator of an optical disk drive and the like, variations in the fixed end positions of wires serving as suspensions are reduced and tilt characteristics are improved. Terminal plates 20 fixed to a lens holder are tilted relative to wires 13 for supporting the lens holder with elasticity, and are soldered at the edges of the terminal plates 20, so that variations in the fixed end positions of the wires 13 are reduced.Type: ApplicationFiled: June 11, 2009Publication date: December 17, 2009Applicant: Panasonic CorporationInventors: Yoshihiro IKAWA, Mamoru MORITA
-
Publication number: 20090310447Abstract: An objective lens actuator is provided in which an objective lens is hardly affected by a higher vibration mode and a gain crossover frequency can be increased even when the objective lens is disposed at the end of a lens holder. Between the optical axis of an objective lens 11 and an end 12a on a lens holder 12 for holding the objective lens 11, a notch 20 is provided as a discontinuous portion having discontinuous stiffness in parallel with a focusing direction. With this configuration, the position of the node of a tertiary vibration mode exhibiting unstable control characteristics can be brought close to the position of the objective lens 11 and the influence of a higher vibration mode can be avoided.Type: ApplicationFiled: June 11, 2009Publication date: December 17, 2009Applicant: Panasonic CorporationInventor: Yoshihiro IKAWA
-
Patent number: 7433278Abstract: In order to obtain a preferred recording/reproducing characteristic in an apparatus for optical disks having higher density, an objective lens drive is provided for driving an objective lens (1) in the optical axis direction, a direction perpendicular to the optical axis, and a tilting direction along the radius of an optical disk, by which operating sensitivity is improved and a stable operating characteristic is realized. Sections of two (7b, 7e) of six fixing portions (7a to 7f) for supporting six support members (6a to 6f) which support a movable part (5), are set lower in stiffness than another sections of the other four fixing portions (7a, 7c, 7d, 7f), thereby improving the operating sensitivity of the movable part (5) and stabilizing the operation of the movable part (5).Type: GrantFiled: October 23, 2003Date of Patent: October 7, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koji Ieki, Hiroshi Yamamoto, Yoshihiro Ikawa
-
Patent number: 7193937Abstract: Tracking coils are attached to outer surfaces of two focusing coils. Inside the focusing coils, a first magnet and a second magnet are arranged respectively. A third magnet is arranged so as to face the first magnet and the second magnet via the tracking coils. An open end of a first yoke for holding the first magnet and an open end of a second yoke for holding the second magnet are connected by a bridging yoke. Since a magnetic flux is formed in the bridging yoke, pitching vibrations can be suppressed and a driving sensitivity improves owing to an increase in an effective magnetic flux.Type: GrantFiled: July 9, 2003Date of Patent: March 20, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshihiro Ikawa, Hiroshi Yamamoto, Koji Ieki
-
Publication number: 20060156324Abstract: In order to obtain a preferred recording/reproducing characteristic in an apparatus for optical disks having higher density, an objective lens drive is provided for driving an objective lens (1) in the optical axis direction, a direction perpendicular to the optical axis, and a tilting direction along the radius of an optical disk, by which operating sensitivity is improved and a stable operating characteristic is realized. Sections of two (7b, 7e) of six fixing portions (7a to 7f) for supporting six support members (6a to 6f) which support a movable part (5), are set lower in stiffness than another sections of the other four fixing portions (7a, 7c, 7d, 7f), thereby improving the operating sensitivity of the movable part (5) and stabilizing the operation of the movable part (5).Type: ApplicationFiled: October 23, 2003Publication date: July 13, 2006Inventors: Koji Ieki, Hiroshi Yamamoto, Yoshihiro Ikawa
-
Patent number: 6977874Abstract: A circuit element driver includes a control section and a driving section. The control section receives a number n of instruction values of a first group (where n?2) and produces and outputs a number p of instruction values of a second group (where (n+1)?p<2n) in accordance with the n instruction values of the first group. The instruction values of the first group are issued to generate voltages to be applied to n two-terminal circuit elements. The driving section generates and outputs p drive voltages in accordance with the p instruction values of the second group. At least one of the p drive voltages changes with at least one of the instruction values of the first group and is applied in common to two or more of the circuit elements at one terminal thereof.Type: GrantFiled: April 19, 2002Date of Patent: December 20, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshihiro Ikawa, Yoshihiro Mushika, Teruyuki Takizawa
-
Patent number: 6834393Abstract: A disk drive including a motor that rotates a disk, an auto-balancer connected to a rotating portion of the motor, a base secured to the motor and connected to an external member via a first elastic member, and a dynamic vibration absorber connected to the base via a second elastic member. When the disk makes a whirling motion while being rotated by the motor, a phase angle of 120 degrees to 180 degrees is formed between a direction that is pointed from a whirling center axis toward a center of mass of the disk and a direction that is pointed from the whirling center axis toward the center of mass of the auto-balancer.Type: GrantFiled: September 3, 2002Date of Patent: December 21, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Akimaru, Teruyuki Takizawa, Yoshito Sazi, Yoshihiro Ikawa, Masahiro Inata
-
Patent number: 6791772Abstract: An objective lens driver includes a movable body, a base, a supporting portion, a first multipolar magnet and a second multipolar magnet. The movable body includes an objective lens, a lens holder, and a coil substrate. The coil substrate includes a focusing coil and a tracking coil. The supporting portion allows the movable body to move in a focusing direction and a tracking direction with respect to the base. The focusing direction is parallel to the optical axis of the objective lens, while the tracking direction is perpendicular to the focusing direction. The first and second multipolar magnets sandwich the coil substrate between them. The focusing and tracking coils are arranged as two flat coils on two mutually parallel separate planes so as to overlap with each other at least partially in a direction that is perpendicular to the focusing and tracking directions.Type: GrantFiled: March 25, 2003Date of Patent: September 14, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kanji Wakabayashi, Hiroshi Yamamoto, Yoshihiro Ikawa
-
Publication number: 20040066714Abstract: Tracking coils are attached to outer surfaces of two focusing coils. Inside the focusing coils, a first magnet and a second magnet are arranged respectively. A third magnet is arranged so as to face the first magnet and the second magnet via the tracking coils. An open end of a first yoke for holding the first magnet and an open end of a second yoke for holding the second magnet are connected by a bridging yoke. Since a magnetic flux is formed in the bridging yoke, pitching vibrations can be suppressed and a driving sensitivity improves owing to an increase in an effective magnetic flux.Type: ApplicationFiled: July 9, 2003Publication date: April 8, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshihiro Ikawa, Hiroshi Yamamoto, Koji Ieki
-
Patent number: 6661415Abstract: Tilt which is inclination of a normal of optical disk relative to optical axis of optical head is corrected with a liquid crystal element. In a driver for the liquid crystal element, a periodic waveform generator generates periodic waveform and an inverting element inverts the periodic waveform. The periodic waveform and the inverted waveform are connected to two ends of a potential divider which provides partial voltages. The periodic waveform is connected to a common electrode of the liquid crystal element, and the partial voltages of the potential divider are connected to electrodes opposing the common electrode. A structure of a driver circuit for each direction is simple. Tilt in a plurality of directions can be performed independently of each other. Spherical aberration is also corrected. When the liquid crystal element is mounted to a fixed component, deterioration due to jitters is reduced.Type: GrantFiled: June 22, 2000Date of Patent: December 9, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuhiko Yasuda, Hidenori Wada, Daisuke Ogata, Kanji Wakabayashi, Naoya Hotta, Yoshihiro Ikawa, Yoshihiro Kanda, Masahiro Inata
-
Publication number: 20030184886Abstract: An objective lens driver includes a movable body, a base, a supporting portion, a first multipolar magnet and a second multipolar magnet. The movable body includes an objective lens, a lens holder, and a coil substrate. The coil substrate includes a focusing coil and a tracking coil. The supporting portion allows the movable body to move in a focusing direction and a tracking direction with respect to the base. The focusing direction is parallel to the optical axis of the objective lens, while the tracking direction is perpendicular to the focusing direction. The first and second multipolar magnets sandwich the coil substrate between them. The focusing and tracking coils are arranged as two flat coils on two mutually parallel separate planes so as to overlap with each other at least partially in a direction that is perpendicular to the focusing and tracking directions.Type: ApplicationFiled: March 25, 2003Publication date: October 2, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Kanji Wakabayashi, Hiroshi Yamamoto, Yoshihiro Ikawa
-
Publication number: 20030039185Abstract: A circuit element driver includes a control section and a driving section. The control section receives a number n of instruction values of a first group (where n≧2) and produces and outputs a number p of instruction values of a second group (where (n+1)≦p<2n) in accordance with the n instruction values of the first group. The instruction values of the first group are issued to generate voltages to be applied to n two-terminal circuit elements. The driving section generates and outputs p drive voltages in accordance with the p instruction values of the second group. At least one of the p drive voltages changes with at least one of the instruction values of the first group and is applied in common to two or more of the circuit elements at one terminal thereof.Type: ApplicationFiled: April 19, 2002Publication date: February 27, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshihiro Ikawa, Yoshihiro Mushika, Teruyuki Takizawa