Patents by Inventor Jingbo Yu
Jingbo Yu 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: 11952355Abstract: Provided are a method of preparing a malononitrile oxime ether compound and an intermediate compound. The malononitrile oxime ether compound has a structure as shown in formula (VII), wherein W is selected from aryl or heteroaryl. The preparation method comprises: reacting a first raw material with a second raw material in the presence of a first solvent and a catalyst to obtain the intermediate compound, wherein the first raw material has a structure as shown in formula (IV), and the second raw material has a structure as shown in formula (V); and subjecting the intermediate compound, and a dehydrant to a dehydration reaction in the present of a second solvent to obtain the malononitrile oxime ether compound. Furthermore, the malononitrile oxime ether compound is obtained through one-step dehydration reaction. using the preparation method, is advantageous for improving the yield of malononitrile oxime ethers and reducing the cost.Type: GrantFiled: June 17, 2019Date of Patent: April 9, 2024Assignee: Shenyang Sinochem Agrochemicals R&D Co., Ltd.Inventors: Hongfei Wu, Xueming Cheng, Libao Xu, Chunxiao Guo, Jingbo Xu, Ningning Sun, Haibo Yu
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Publication number: 20240071222Abstract: A method for controlling a traffic light, a method and apparatus for navigating an unmanned vehicle and a method and apparatus for training a model are provided. An implementation comprises: generating a reinforced traffic light state parameter according to vehicle state representation information of an unmanned vehicle currently contained in a preset area of a target traffic light and a current traffic light state parameter of the target traffic light; and generating a traffic light control action according to the reinforced traffic light state parameter; where the reinforced traffic light state parameter is used to cause an unmanned vehicle navigation end to generate a reinforced vehicle state parameter according to a reinforced traffic light state and a current vehicle state parameter of a target unmanned vehicle, and generate an unmanned vehicle navigation action according to the reinforced vehicle state parameter.Type: ApplicationFiled: November 7, 2023Publication date: February 29, 2024Inventors: Qian SUN, Le ZHANG, Jingbo ZHOU, Hui XIONG, Weijia ZHANG, Huan YU, Yu MEI, Weicen LING
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Patent number: 8730610Abstract: A distance between a head and a storage media is measured. An amount of power applied to a heater element in the head is adaptively adjusted based on a difference between the measured distance and a reference position indicating a desired distance between the head and the storage media. Related circuits and devices are also discussed.Type: GrantFiled: May 21, 2007Date of Patent: May 20, 2014Assignee: Seagate Technology LLCInventors: James McFadyen, Kiem Nguyen, Jingbo Yu
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Patent number: 7362534Abstract: A disk drive includes a rotatable storage disk, an actuator motor, a slider that magnetically interacts with the storage disk, and a drive circuitry. A portion of the slider moves between a first position wherein the slider does not contact the storage disk and a second position wherein the slider contacts the storage disk. The drive circuitry can detect when the position of the slider changes between these positions. In one embodiment, the drive circuitry monitors off-track movement of the slider to detect when the slider has moved between these positions. The drive circuitry can also current that is directed to the actuator motor that is used to compensate for off-track movement to detect when the slider moves between these positions. In yet another embodiment, the drive circuitry monitors a rotational velocity of the storage disk to detect approximately when the slider moves between these positions.Type: GrantFiled: April 7, 2005Date of Patent: April 22, 2008Assignee: Maxtor CorporationInventors: Erhard Schreck, Francis P. Crimi, Jingbo Yu, Michael Mallary, Scott Hughes, Duc Bahn, Mark Heimbaugh, Kazuhiro Saito, Andrew LeFebvre, Joerg Ferber, Xiaoping Hu, Douglas J. Krajnovich, Chris Hawks, Donald J Brunnett, Bruce C Schardt
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Publication number: 20080030888Abstract: Preferred embodiments of the present invention are generally directed to reducing variation in a distribution of transducer fly heights by selectively applying first and second fly height adjustment values to a plurality of transducers, the second fly height adjustment value being a multiple of the first fly height adjustment value.Type: ApplicationFiled: May 22, 2007Publication date: February 7, 2008Applicant: Maxtor CorporateInventors: DON BRUNNETT, Jingbo Yu, Pang Tan
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Patent number: 7324299Abstract: A disk drive having a drive housing, a storage disk that is rotatably coupled to the drive housing, and a slider assembly that includes a head and a slider mover. The head reads data from the storage disk during a read operation and writes data to the storage disk during a write operation. The slider mover maintains the head at a read HtD spacing during the read operation, at a pre-write HtD spacing during the read operation prior to the write operation, at a write HtD spacing during the write operation, and at an idle HtD spacing when the drive is not performing the read operation or the write operation. The disk drive includes a drive circuitry that directs a read power level to the slider mover to maintain the head at the read HtD spacing, a pre-write power level to maintain the head at the pre-write HtD spacing, a write power level to maintain the head at the write HtD spacing, and a idle power level to maintains the head at the idle HtD spacing.Type: GrantFiled: April 7, 2005Date of Patent: January 29, 2008Assignee: Maxtor CorporationInventors: Erhard Schreck, Donald J Brunnett, Jingbo Yu, Francis P. Crimi, Scott Hughes, Duc Banh, Anthony R. Hurtado, Kazuhiro Saito, Andrew LeFebvre, Chris Hawks, Thao Anh Nguyen, Brian Strom, Bruce C. Schardt
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Patent number: 7310194Abstract: A disk drive includes a drive housing, a storage disk, a slider and a drive circuitry. The slider magnetically interacts with the storage disk, and includes a read/write head that is positioned to have an actual head-to-disk spacing greater than zero nanometers during rotation of the storage disk. The drive circuitry can determine and/or monitor the actual head-to-disk spacing at any time during the operation of the disk drive based on an amplitude or a change in the amplitude of a signal such as a variable gain amplifier signal. In one embodiment, the slider includes a slider mover that receives current via the drive circuitry and causes a deformation of a portion of the slider to change the head-to-disk spacing based on the amplitude of the signal.Type: GrantFiled: April 7, 2005Date of Patent: December 18, 2007Assignee: Maxtor CorporationInventors: Bruce C. Schardt, Erhard Schreck, Jingbo Yu, Michael Mallary, Scott Hughes, Duc Banh, Kazuhiro Saito, Donald J Brunnett, Tim Glassburn, Chris Hawks, Thao Anh Nguyen, Andrew LeFebvre, Joerg Ferber, Richard K. Oswald, Brian Strom
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Publication number: 20070268615Abstract: A distance between a head and a storage media is measured. An amount of power applied to a heater element in the head is adaptively adjusted based on a difference between the measured distance and a reference position indicating a desired distance between the head and the storage media. Related circuits and devices are also discussed.Type: ApplicationFiled: May 21, 2007Publication date: November 22, 2007Inventors: James McFadyen, Kiem Nguyen, Jingbo Yu
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Patent number: 7212369Abstract: A method and apparatus for providing a temporary utility zone in a disk drive. A disk surface has a write head associated therewith. The write head is used to write spiral servo information and a propagation state indicator onto the disk surface. The spiral servo information and propagation state indicator are used to perform a self-servo write operation on the disk surface.Type: GrantFiled: August 16, 2004Date of Patent: May 1, 2007Assignee: Maxtor CorporationInventors: Lloyd Levy, Yu Sun, Pang L. Tan, Jingbo Yu, Adrian Cerda
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Patent number: 7170700Abstract: A method of determining side track erasure in a disk drive having a disk and a transducer. A target track and one or more side tracks proximate to the target track on the disk are selected, and recording parameters for recording signals on the target track and each side track with the transducer are selected. Thereafter, signals are recorded on each side track and then signals are recorded on the target track multiple times. A reduction in the integrity of the recorded signals on each side track due to recording signals on the target track multiple times is detected, and the detected reduction in the integrity of the recorded signals on each side track represents the amount of the erasure of the recorded signals on the side track. Recording parameters are changed based on the signal integrity reduction to minimize side track erasure.Type: GrantFiled: April 18, 2002Date of Patent: January 30, 2007Assignee: Maxtor CorporationInventors: Gang H. Lin, Erhard Schreck, Kezhao Zhang, Don Brunnett, Duc Banh, Kurt Rusnak, Jingbo Yu, Suet Teo, Nick Warner, John Vicars
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Patent number: 6980383Abstract: A PTP test subsystem of a magnetic disk drive identifies an undesired pole tip protrusion (PTP) condition, and takes steps to prevent problems associated with PTP. A PTP stressing mechanism stresses the disk drive during a PTP test mode to induce a PTP condition. A disk contact detection circuit detects when a head of the disk drive contacts the disk. A PTP write current determining circuit is also provided which comprises a write current level detector to ascertain a write current level at which the disk contact detection circuit detects when the head of the disk drive contacts the disk while the disk drive is stressed during the PTP test mode.Type: GrantFiled: February 19, 2003Date of Patent: December 27, 2005Assignee: Maxtor CorporationInventors: Don Brunnett, Duc Banh, Jingbo Yu, Mark Heimbaugh, Suet Teo, Erhard Schreck
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Publication number: 20040100255Abstract: A PTP test subsystem of a magnetic disk drive identifies an undesired pole tip protrusion (PTP) condition, and takes steps to prevent problems associated with PTP. A PTP stressing mechanism stresses the disk drive during a PTP test mode to induce a PTP condition. A disk contact detection circuit detects when a head of the disk drive contacts the disk. A PTP write current determining circuit is also provided which comprises a write current level detector to ascertain a write current level at which the disk contact detection circuit detects when the head of the disk drive contacts the disk while the disk drive is stressed during the PTP test mode.Type: ApplicationFiled: February 19, 2003Publication date: May 27, 2004Applicant: Maxtor CorporationInventors: Don Brunnett, Duc Banh, Jingbo Yu, Mark Heimbaugh, Suet Teo, Erhard Schreck