Patents by Inventor Dong-Hong Li
Dong-Hong Li 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: 11971319Abstract: A surface electromyography signal-torque matching method based on multi-segmentation parallel CNN model (MSP-CNN model), step 1: collecting torque signals and surface electromyography (sEMG) signals when tightening a bolt; step 2: dividing a range of a transducer by at least two granularities, generating a plurality of torque sub-ranges corresponding to the at least two granularities and labeling the plurality of torque sub-ranges with torque labels; step 3: generating sEMG graphs of the sEMG signals in each time window; step 4: determining the torque labels of each time window under each of the at least two granularities according to the torque sub-ranges that average values of torques fall in; step 5: establishing a sample set; step 6: building a MSP-CNN model, and training parallel independent CNN models with sample datasets; and step 7: inputting the sEMG signals of the operator during assembly into trained MSP-CNN model and identifying assembly torques.Type: GrantFiled: May 7, 2020Date of Patent: April 30, 2024Assignees: QINGDAO UNIVERSITY OF TECHNOLOGY, XI'AN JIAOTONG UNIVERSITYInventors: Cheng Jun Chen, Kai Huang, Dong Nian Li, Shuai Zheng, Jun Hong
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Patent number: 11969904Abstract: A registration system for robot-oriented augmented reality teaching system, comprising: a physical robot unit, a registration unit, a virtual robot generation unit and a computer; the physical robot unit comprising a physical robot, a physical robot controller and a robot point-to-point intermittent movement control program; the physical robot provided thereon with a physical robot base coordinate system; the physical robot controller connected with the physical robot and the computer respectively; the robot point-to-point intermittent movement control program installed in the computer; the registration unit comprising a registration marker, a camera and a conversion calculation unit; the registration marker arranged on the physical robot body; the camera fixed in a physical environment except the physical robot; the camera connected with the computer, and the conversion calculation unit arranged in the computer; the virtual robot generation unit arranged in the computer and used for generating a virtual roboType: GrantFiled: March 24, 2020Date of Patent: April 30, 2024Assignee: QINGDAO UNIVERSITY OF TECHNOLOGYInventors: Cheng Jun Chen, Xu Tong Ding, Yong Pan, Dong Nian Li, Jun Hong
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Patent number: 7951415Abstract: A pole layer has an end located in a medium facing surface, the end having: a first side close to a substrate; a second side located opposite to the first side; a third side connecting an end of the first side to an end of the second side; and a fourth side connecting the other end of the first side to the other end of the second side. The second side defines a track width. The end of the pole layer located in the medium facing surface has a width that decreases toward the first side. The pole layer is disposed in a groove of a pole-layer-encasing layer made of a nonmagnetic insulating material, with a nonmagnetic conductive film provided between the encasing layer and the pole layer. The pole layer incorporates: a first layer located closer to the surface of the groove; and a second layer located farther from the surface of the groove.Type: GrantFiled: August 15, 2008Date of Patent: May 31, 2011Assignee: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Dong-Hong Li, Shigeki Tanemura, Hiroyuki Itoh
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Patent number: 7933094Abstract: A pole layer has an end face located in a medium facing surface, allows a magnetic flux corresponding to a magnetic field generated by a coil to pass therethrough, and generates a write magnetic field. A shield includes a first layer having an end face located in the medium facing surface at a position forward of the end face of the pole layer along a direction of travel of a recording medium, and a second layer disposed between at least part of the coil and the medium facing surface and magnetically connected to the first layer. The second layer has an end face closer to the medium facing surface, and this end face is located at a distance from the medium facing surface. A nonmagnetic layer made of an inorganic insulating material is provided between the end face of the second layer and the medium facing surface, and a photoresist layer is provided between the end face of the second layer and the nonmagnetic layer.Type: GrantFiled: November 27, 2007Date of Patent: April 26, 2011Assignee: Headway Technologies, Inc.Inventors: Dong-Hong Li, Yoshitaka Sasaki, Hiroyuki Itoh
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Thin-film magnetic head, method of manufacturing the same, head Gimbal assembly, and hard disk drive
Patent number: 7718218Abstract: A thin-film magnetic head has a laminated construction comprising a main pole layer having a magnetic pole tip on a side of the medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole tip forming a recording gap layer, on the side of the medium-opposing surface, and a thin-film coil wound around at least a portion of the write shield layer. The thin-film magnetic head has an upper yoke pole layer having a larger size than the portion of the main pole layer which is more distant from the medium-opposing surface than the recording gap layer, wherein the upper yoke pole layer is joined to the side of the main pole layer which is near the thin-film coil.Type: GrantFiled: September 10, 2008Date of Patent: May 18, 2010Assignee: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Lijie Guan, Hiroyuki Ito, Dong Hong Li -
Patent number: 7656613Abstract: A magnetic head comprises a pole layer, a shield layer, a gap layer disposed between the pole layer and the shield layer, and a coil. The shield layer incorporates: a first layer disposed on the gap layer; a second layer disposed on the first layer; and a third layer disposed on the second layer. The first layer has an end face located in a medium facing surface. An end face of each of the second and third layers closer to the medium facing surface is located at a distance from the medium facing surface. A first nonmagnetic layer is disposed around the first layer. A second nonmagnetic layer is disposed between the medium facing surface and the end face of the second layer closer to the medium facing surface.Type: GrantFiled: February 9, 2009Date of Patent: February 2, 2010Assignee: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Hiroyuki Itoh, Dong-Hong Li, Shigeki Tanemura, Hironori Araki
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Patent number: 7609479Abstract: A pole layer has an end face located in a medium facing surface, allows a magnetic flux corresponding to a magnetic field generated by a coil to pass therethrough, and generates a write magnetic field for writing data on a recording medium by using a perpendicular magnetic recording system. A shield incorporates: a first layer having an end face located in a region of the medium facing surface forward of the end face of the pole layer along the direction of travel of the recording medium; a second layer disposed in a region sandwiching the pole layer with the first layer; a first coupling portion coupling the first layer to the second layer without touching the pole layer; and a second coupling portion coupling the pole layer to the second layer and located farther from the medium facing surface than the first coupling portion.Type: GrantFiled: March 10, 2006Date of Patent: October 27, 2009Assignee: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Hiroyuki Itoh, Dong-Hong Li, Joseph Smyth, Lijie Guan, Yaw-Shing Tang
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Patent number: 7551394Abstract: A magnetic head comprises a pole layer, a shield layer, a gap layer disposed between the pole layer and the shield layer, and a coil. The shield layer incorporates a first layer, a second layer, a third layer and a fourth layer that are disposed on the gap layer one by one. The first layer has an end face located in a medium facing surface. The second layer has: a first surface located in the medium facing surface; a second surface touching the first layer; and a third surface opposite to the second surface. The third layer touches the third surface of the second layer. An end face of each of the third and fourth layers closer to the medium facing surface is located at a distance from the medium facing surface.Type: GrantFiled: July 12, 2006Date of Patent: June 23, 2009Assignees: Headway Technologies, Inc., SAE Magnetics (H.K.) Ltd.Inventors: Yoshitaka Sasaki, Hiroyuki Itoh, Shigeki Tanemura, Hironori Araki, Dong-Hong Li, Tatsushi Shimizu, Tatsuya Shimizu
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Publication number: 20090147400Abstract: A magnetic head comprises a pole layer, a shield layer, a gap layer disposed between the pole layer and the shield layer, and a coil. The shield layer incorporates: a first layer disposed on the gap layer; a second layer disposed on the first layer; and a third layer disposed on the second layer. The first layer has an end face located in a medium facing surface. An end face of each of the second and third layers closer to the medium facing surface is located at a distance from the medium facing surface. A first nonmagnetic layer is disposed around the first layer. A second nonmagnetic layer is disposed between the medium facing surface and the end face of the second layer closer to the medium facing surface.Type: ApplicationFiled: February 9, 2009Publication date: June 11, 2009Applicant: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Hiroyuki Itoh, Dong-Hong Li, Shigeki Tanemura, Hironori Araki
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Publication number: 20090135530Abstract: A pole layer has an end face located in a medium facing surface, allows a magnetic flux corresponding to a magnetic field generated by a coil to pass therethrough, and generates a write magnetic field. A shield includes a first layer having an end face located in the medium facing surface at a position forward of the end face of the pole layer along a direction of travel of a recording medium, and a second layer disposed between at least part of the coil and the medium facing surface and magnetically connected to the first layer. The second layer has an end face closer to the medium facing surface, and this end face is located at a distance from the medium facing surface. A nonmagnetic layer made of an inorganic insulating material is provided between the end face of the second layer and the medium facing surface, and a photoresist layer is provided between the end face of the second layer and the nonmagnetic layer.Type: ApplicationFiled: November 27, 2007Publication date: May 28, 2009Applicant: HEADWAY TECHNOLOGIES, INC.Inventors: Dong-Hong Li, Yoshitaka Sasaki, Hiroyuki Itoh
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Patent number: 7508629Abstract: A magnetic head comprises a pole layer, a shield layer, a gap layer disposed between the pole layer and the shield layer, and a coil. The shield layer incorporates: a first layer disposed on the gap layer; a second layer disposed on the first layer; and a third layer disposed on the second layer. The first layer has an end face located in a medium facing surface. An end face of each of the second and third layers closer to the medium facing surface is located at a distance from the medium facing surface. A first nonmagnetic layer is disposed around the first layer. A second nonmagnetic layer is disposed between the medium facing surface and the end face of the second layer closer to the medium facing surface.Type: GrantFiled: November 30, 2005Date of Patent: March 24, 2009Assignee: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Hiroyuki Itoh, Dong-Hong Li, Shigeki Tanemura, Hironori Araki
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Thin-film magnetic head, method of manufacturing the same, head Gimbal assembly, and hard disk drive
Publication number: 20090017198Abstract: A thin-film magnetic head has a laminated construction comprising a main pole layer having a magnetic pole tip on a side of the medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole tip forming a recording gap layer, on the side of the medium-opposing surface, and a thin-film coil wound around at least a portion of the write shield layer. The thin-film magnetic head has an upper yoke pole layer having a larger size than the portion of the main pole layer which is more distant from the medium-opposing surface than the recording gap layer, wherein the upper yoke pole layer is joined to the side of the main pole layer which is near the thin-film coil.Type: ApplicationFiled: September 10, 2008Publication date: January 15, 2009Applicant: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Lijie Guan, Hiroyuki Ito, Dong Hong Li -
Publication number: 20080317969Abstract: A pole layer has an end located in a medium facing surface, the end having: a first side close to a substrate; a second side located opposite to the first side; a third side connecting an end of the first side to an end of the second side; and a fourth side connecting the other end of the first side to the other end of the second side. The second side defines a track width. The end of the pole layer located in the medium facing surface has a width that decreases toward the first side. The pole layer is disposed in a groove of a pole-layer-encasing layer made of a nonmagnetic insulating material, with a nonmagnetic conductive film provided between the encasing layer and the pole layer. The pole layer incorporates: a first layer located closer to the surface of the groove; and a second layer located farther from the surface of the groove.Type: ApplicationFiled: August 15, 2008Publication date: December 25, 2008Applicant: HEADWAY TECHNOLOGIES, INC.Inventors: Yoshitaka Sasaki, Dong-Hong Li, Shigeki Tanemura, Hiroyuki Itoh
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Patent number: 7468864Abstract: A pole layer has an end located in a medium facing surface, the end having: a first side close to a substrate; a second side located opposite to the first side; a third side connecting an end of the first side to an end of the second side; and a fourth side connecting the other end of the first side to the other end of the second side. The second side defines a track width. The end of the pole layer located in the medium facing surface has a width that decreases toward the first side. The pole layer is disposed in a groove of a pole-layer-encasing layer made of a nonmagnetic insulating material, with a nonmagnetic conductive film provided between the encasing layer and the pole layer. The pole layer incorporates: a first layer located closer to the surface of the groove; and a second layer located farther from the surface of the groove.Type: GrantFiled: July 1, 2004Date of Patent: December 23, 2008Assignee: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Dong-Hong Li, Shigeki Tanemura, Hiroyuki Itoh
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Patent number: 7440229Abstract: A thin-film magnetic head has a laminated construction comprising a main pole layer having a magnetic pole tip on a side of the medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole tip forming a recording gap layer, on the side of the medium-opposing surface, and a thin-film coil wound around at least a portion of the write shield layer. The thin-film magnetic head has an upper yoke pole layer having a larger size than the portion of the main pole layer which is more distant from the medium-opposing surface than the recording gap layer, wherein the upper yoke pole layer is joined to the side of the main pole layer which is near the thin-film coil.Type: GrantFiled: August 6, 2004Date of Patent: October 21, 2008Assignee: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Lijie Guan, Hiroyuki Ito, Dong Hong Li
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Patent number: 7369361Abstract: A method of manufacturing magnetic heads comprises the step of: fabricating a magnetic head substructure by forming components of a plurality of magnetic heads on a single substrate, wherein a plurality of rows of pre-head portions that will be the respective magnetic heads later are aligned in the substructure; and fabricating the magnetic heads by separating the pre-head portions from one another through cutting the substructure. In the substructure first resistor elements and second resistor elements are formed. Each of the first resistor elements has a resistance that varies depending on the location of an end of an MR element located in a medium facing surface along the direction orthogonal to the medium facing surface. Each of the second resistor elements has a resistance that varies depending on the location of an end face of a track width defining portion located in the medium facing surface along the direction orthogonal to the medium facing surface.Type: GrantFiled: February 7, 2005Date of Patent: May 6, 2008Assignee: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Hiroyuki Itoh, Dong-Hong Li, Hironori Araki, Kazuo Ishizaki
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Publication number: 20080013209Abstract: A magnetic head comprises a pole layer, a shield layer, a gap layer disposed between the pole layer and the shield layer, and a coil. The shield layer incorporates a first layer, a second layer, a third layer and a fourth layer that are disposed on the gap layer one by one. The first layer has an end face located in a medium facing surface. The second layer has: a first surface located in the medium facing surface; a second surface touching the first layer; and a third surface opposite to the second surface. The third layer touches the third surface of the second layer. An end face of each of the third and fourth layers closer to the medium facing surface is located at a distance from the medium facing surface.Type: ApplicationFiled: July 12, 2006Publication date: January 17, 2008Applicants: Headway Technologies, Inc., SAE Magnetics (H.K.) Ltd.Inventors: Yoshitaka Sasaki, Hiroyuki Itoh, Shigeki Tanemura, Hironori Araki, Dong-Hong Li, Tatsushi Shimizu, Tatsuya Shimizu
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Publication number: 20070211377Abstract: A pole layer has an end face located in a medium facing surface, allows a magnetic flux corresponding to a magnetic field generated by a coil to pass therethrough, and generates a write magnetic field for writing data on a recording medium by means of a perpendicular magnetic recording system. A shield incorporates: a first layer having an end face located in a region of the medium facing surface forward of the end face of the pole layer along the direction of travel of the recording medium; a second layer disposed in a region sandwiching the pole layer with the first layer; a first coupling portion coupling the first layer to the second layer without touching the pole layer; and a second coupling portion coupling the pole layer to the second layer and located farther from the medium facing surface than the first coupling portion.Type: ApplicationFiled: March 10, 2006Publication date: September 13, 2007Applicant: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Hiroyuki Itoh, Dong-Hong Li, Joseph Smyth, Lijie Guan, Yaw-Shing Tang
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Publication number: 20070121248Abstract: A magnetic head comprises a pole layer, a shield layer, a gap layer disposed between the pole layer and the shield layer, and a coil. The shield layer incorporates: a first layer disposed on the gap layer; a second layer disposed on the first layer; and a third layer disposed on the second layer. The first layer has an end face located in a medium facing surface. An end face of each of the second and third layers closer to the medium facing surface is located at a distance from the medium facing surface. A first nonmagnetic layer is disposed around the first layer. A second nonmagnetic layer is disposed between the medium facing surface and the end face of the second layer closer to the medium facing surface.Type: ApplicationFiled: November 30, 2005Publication date: May 31, 2007Applicant: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Hiroyuki Itoh, Dong-Hong Li, Shigeki Tanemura, Hironori Araki
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Patent number: 7193816Abstract: A magnetic head comprises a pole layer, a gap layer, a shield layer, a nonmagnetic layer, and a coil. The shield layer incorporates: a first layer disposed on the gap layer; a second layer disposed on the first layer; a two-layered coupling layer disposed on a region of the pole layer where an opening of the gap layer is formed; and a third layer disposed to couple the second layer to the coupling layer. The first layer defines throat height TH. The nonmagnetic layer is disposed on a side of the first layer. The coil is disposed on the nonmagnetic layer on a side of the second layer.Type: GrantFiled: June 21, 2004Date of Patent: March 20, 2007Assignee: Headway TechnologiesInventors: Yoshitaka Sasaki, Hiroyuki Itoh, Dong-Hong Li, Po-Kang Wang, Lijie Guan