Patents by Inventor Lingzhi Yang
Lingzhi Yang 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: 11915425Abstract: A method include obtaining at least one first PET image of a subject acquired by a PET scanner and at least one first MR image of the subject acquired by an MR scanner. The method may also include obtaining a target neural network model. The target neural network model may provide a mapping relationship between PET images, MR images, and corresponding attenuation correction data, and output attenuation correction data associated with a specific PET image of the PET images. The method may further include generating first attenuation correction data corresponding to the subject using the target neural network model based on the at least one first PET image and the at least one first MR image of the subject, and determining a target PET image of the subject based on the first attenuation correction data corresponding to the subject.Type: GrantFiled: March 10, 2021Date of Patent: February 27, 2024Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.Inventors: Lingzhi Hu, Tuoyu Cao, Gang Yang, Yang Lyu
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Patent number: 11221765Abstract: A background operation is internally triggered by firmware of a disk drive. During a training phase defined by a first time period, access latency of host commands is monitored during rotational position sorting command selection. During a sorting phase after the training phase, a sorting threshold is defined based on the access latencies measured during the training phase. The background command is selected for execution in the sorting phase if the seek and rotational latency is less than the sorting threshold.Type: GrantFiled: April 22, 2020Date of Patent: January 11, 2022Assignee: Seagate Technology, LLCInventors: Abhay T. Kataria, LingZhi Yang, Jonathan H. Ormsby
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Publication number: 20210334008Abstract: A background operation is internally triggered by firmware of a disk drive. During a training phase defined by a. first time period, access latency of host commands is monitored during rotational position sorting command selection. During a sorting phase after the training phase, a sorting threshold is defined based on the access latencies measured during the training phase. The background command is selected for execution in the sorting phase if the seek and rotational latency is less than the sorting threshold.Type: ApplicationFiled: April 22, 2020Publication date: October 28, 2021Inventors: Abhay T. Kataria, LingZhi Yang, Jonathan H. Ormsby
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Patent number: 11008830Abstract: The present invention provides a stratified waterflooding apparatus, which comprises: a water distribution unit, which comprises two water distributors, the water distributor having an inner side wall and an outer side wall, the inner and outer side walls forming a first annular cavity therebetween and being respectively provided with a water inlet and a water outlet which are communicated with the first annular cavity, the first annular cavity accommodates a driving mechanism and an adjustable blocking member, the adjustable blocking member having a first operating position in which it blocks the water inlet or the water outlet and a second operating position in which it releases the blocking of the water inlet and the water outlet; and a controller in communication connection with the driving mechanism. The stratified waterflooding apparatus can realize intelligent and automatic regulation of an aperture of the water distributors in the stratified waterflooding process.Type: GrantFiled: August 1, 2019Date of Patent: May 18, 2021Assignee: PETROCHINA COMPANY LIMITEDInventors: Gaixing Hu, Hongjun Lu, Bin Yao, Yafeng Ju, Jiuzheng Yu, Lingzhi Yang, Fuwei Bi, Zijian Wang, Loulou Li
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Patent number: 10890059Abstract: A layered water injection system and a layered water injection method. The system comprises: a ground water injection valve group configured with an intelligent control valve, for receiving a water injection control instruction sent by a remote control center, and for converting the water injection control instruction into a switching action of the intelligent control valve to control water flow pressure fluctuation in a water injection string, so as to form a first pressure wave code in the water injection string; a water distributor for collecting the first pressure wave code, interpreting the first pressure wave code as a corresponding water outlet switch instruction, and performing layered water injection control according to the water outlet switch instruction. The embodiments of the application can improve the automation level of layered water injection and the reliability of layered water injection control.Type: GrantFiled: October 30, 2018Date of Patent: January 12, 2021Assignee: PETROCHINA COMPANY LIMITEDInventors: Lingzhi Yang, Yafeng Ju, Bin Yao, Jiuzheng Yu, Bilin Luo, Fuwei Bi, Zijian Wang, Yanqing Liu
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Publication number: 20200115991Abstract: The present invention provides a stratified waterflooding apparatus, which comprises: a water distribution unit, which comprises two water distributors, the water distributor having an inner side wall and an outer side wall, the inner and outer side walls forming a first annular cavity therebetween and being respectively provided with a water inlet and a water outlet which are communicated with the first annular cavity, the first annular cavity accommodates a driving mechanism and an adjustable blocking member, the adjustable blocking member having a first operating position in which it blocks the water inlet or the water outlet and a second operating position in which it releases the blocking of the water inlet and the water outlet; and a controller in communication connection with the driving mechanism. The stratified waterflooding apparatus can realize intelligent and automatic regulation of an aperture of the water distributors in the stratified waterflooding process.Type: ApplicationFiled: August 1, 2019Publication date: April 16, 2020Inventors: Gaixing HU, Hongjun LU, Bin YAO, Yafeng JU, Jiuzheng YU, Lingzhi YANG, Fuwei BI, Zijian WANG, Loulou LI
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Publication number: 20190242226Abstract: A layered water injection system and a layered water injection method. The system comprises: a ground water injection valve group configured with an intelligent control valve, for receiving a water injection control instruction sent by a remote control center, and for converting the water injection control instruction into a switching action of the intelligent control valve to control water flow pressure fluctuation in a water injection string, so as to form a first pressure wave code in the water injection string; a water distributor for collecting the first pressure wave code, interpreting the first pressure wave code as a corresponding water outlet switch instruction, and performing layered water injection control according to the water outlet switch instruction. The embodiments of the application can improve the automation level of layered water injection and the reliability of layered water injection control.Type: ApplicationFiled: October 30, 2018Publication date: August 8, 2019Inventors: Lingzhi YANG, Yafeng JU, Bin YAO, Jiuzheng YU, Bilin LUO, Fuwei BI, Zijian WANG, Yanqing LIU
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Patent number: 10310873Abstract: Systems and methods are disclosed for probabilistic aging command sorting, including adjusting an execution order for a command based on a probability of the command reaching a time out threshold. The system may determine a probability of a command timing out using a lookup table for a base queue depth, modified by a scalar value obtained from a queue depth adjustment lookup table using the actual queue depth as an index. In this manner, an accurate probability of a command timing out for a given queue depth can be determine without significant computational overhead.Type: GrantFiled: July 27, 2017Date of Patent: June 4, 2019Assignee: Seagate Technology LLCInventors: Jeffrey V DeRosa, LingZhi Yang, Kenneth L Barham
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Patent number: 10303373Abstract: An apparatus includes a buffer and a processor. The buffer contains a plurality of commands pending for a data storage medium. The processor is configured to sort the commands in an execution efficiency favorable manner, which reveals a most favorable command for execution, compare a skip count for each of the commands to a threshold count, the skip count corresponding to a number of times execution of the command has been skipped in favor of execution of another command, and execute one of the commands having a skip count that has reached the threshold count over the execution of the most favorable command.Type: GrantFiled: June 12, 2017Date of Patent: May 28, 2019Assignee: SEAGATE TECHNOLOGY LLCInventors: Christopher Fulkerson, Kenneth Barham, LingZhi Yang
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Publication number: 20180356995Abstract: An apparatus includes a buffer and a processor. The buffer contains a plurality of commands pending for a data storage medium. The processor is configured to sort the commands in an execution efficiency favorable manner, which reveals a most favorable command for execution, compare a skip count for each of the commands to a threshold count, the skip count corresponding to a number of times execution of the command has been skipped in favor of execution of another command, and execute one of the commands having a skip count that has reached the threshold count over the execution of the most favorable command.Type: ApplicationFiled: June 12, 2017Publication date: December 13, 2018Inventors: Christopher Fulkerson, Kenneth Barham, LingZhi Yang
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Patent number: 9852754Abstract: Apparatus and method for managing a data storage device during extended idle conditions of the data storage device in which host access commands are not being received or serviced. In some embodiments, upon detection of an idle condition, a control circuit identifies a selected data transducer of the data storage device and a corresponding initial radial position of the data transducer with respect to an associated rotatable data recording surface. The control circuit performs a serpentine seek operation during the idle condition to gradually advance the selected data transducer in a selected radial direction across the data recording surface beginning at the initial radial position and ending at a final radial position. The serpentine seek operation prevents the transducer from being maintained in a stationary position during the idle condition, reducing the likelihood of damage through thermal asperity contact events, lubrication disturb, wear, etc.Type: GrantFiled: September 30, 2016Date of Patent: December 26, 2017Assignee: Seagate Technology LLCInventors: Richard E. Martin, Abhay T. Kataria, Dipeshkumar J. Purani, Richard A. Herr, Alexander T. Le, Sandeep D. Sequeira, LingZhi Yang, Ximin Shan, Salman Al Saif
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Patent number: 9075538Abstract: A data storage device may generally be directed to a buffer that stores a plurality of command requests pending for a data storage medium and a processor that is configured to skip a first command request and execute a second command request in response to the second command request having an access latency within a first predetermined performance impact range and a power consumption within a second predetermined power savings range compared to the first command request.Type: GrantFiled: June 24, 2013Date of Patent: July 7, 2015Assignee: Seagate Technology LLCInventors: Christopher Ryan Fulkerson, Lingzhi Yang, Kenneth Lawrence Barham
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Publication number: 20150039101Abstract: Apparatus and method for moving a control object, such as but not limited to a data read/write transducer adjacent a rotatable magnetic recording medium in a data storage system. In accordance with some embodiments, a compensation value is calculated for a baseline friction model which predicts friction in a positioning system. A modified friction model is generated based on the compensation value and the baseline friction model. A control object of the positioning system is moved from an initial position to a final position responsive to a trajectory profile calculated using the modified friction model.Type: ApplicationFiled: July 31, 2013Publication date: February 5, 2015Applicant: Seagate Technology LLCInventors: LingZhi Yang, Ju-il Lee, Arnold Slezak
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Publication number: 20140379940Abstract: A data storage device may generally be directed to a buffer that stores a plurality of command requests pending for a data storage medium and a processor that is configured to skip a first command request and execute a second command request in response to the second command request having an access latency within a first predetermined performance impact range and a power consumption within a second predetermined power savings range compared to the first command request.Type: ApplicationFiled: June 24, 2013Publication date: December 25, 2014Inventors: Christopher Ryan Fulkerson, Lingzhi Yang, Kenneth Lawrence Barham
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Patent number: 8693132Abstract: Apparatuses and methods are disclosed that relate to movement of actuator arms from a stopped position. In one example, a method may include attempting to unlatch an actuator arm from a stop and measuring an electrical parameter of a driver circuit of the actuator arm. The method may further include detecting an unsafe unlatch event using a controller when the electrical parameter does not exceed a first threshold within a predetermined period of time.Type: GrantFiled: October 23, 2012Date of Patent: April 8, 2014Assignee: Seagate Technology, LLCInventors: KarWei Koay, LingZhi Yang, SangHoon Lee
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Patent number: 7554761Abstract: A method of calibrating an actuator controller is discussed. The method includes using an open loop seek operation and compensating for a low frequency response to reduce the velocity at the end of the open loop seek operation.Type: GrantFiled: June 13, 2007Date of Patent: June 30, 2009Assignee: Seagate Technology LLCInventors: Lingzhi Yang, David Louis Schell, Sandeep D. Sequeira
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Patent number: 7477476Abstract: Various embodiments are generally directed to moving a control object using a sine-based trajectory profile with an initial non-zero velocity.Type: GrantFiled: June 8, 2007Date of Patent: January 13, 2009Assignee: Seagate Technology LLCInventors: David Louis Schell, Lingzhi Yang
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Publication number: 20080130162Abstract: A method of calibrating an actuator controller is discussed. The method includes using an open loop seek operation and compensating for a low frequency response to reduce the velocity at the end of the open loop seek operation.Type: ApplicationFiled: June 13, 2007Publication date: June 5, 2008Applicant: Seagate Technology LLCInventors: Lingzhi Yang, David Louis Schell, Sandeep D. Sequeira
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Publication number: 20070285833Abstract: Various embodiments are generally directed to moving a control object using a sine-based trajectory profile with an initial non-zero velocity.Type: ApplicationFiled: June 8, 2007Publication date: December 13, 2007Applicant: Seagate Technology LLCInventors: DAVID LOUIS SCHELL, Lingzhi Yang