Patents by Inventor Jian Qiang

Jian Qiang 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).

  • Publication number: 20190278594
    Abstract: In one implementation, this disclosure provides a method for executing a partial band rewrite operation comprising identifying a first track of a shingled data band to receive data of a write received at a shingled media storage device and writing a first subset of the received data to a media cache, where the first subset corresponds to the first track of the shingled data band to receive data of the write command. The method also includes writing a remaining subset of the received data to target locations within the shingled data band without updating data on the first track within the shingled data band corresponding to the first subset of the received data.
    Type: Application
    Filed: March 7, 2018
    Publication date: September 12, 2019
    Inventors: Xiong Liu, WenXiang Xie, Quan Li, Jian Qiang
  • Publication number: 20190276485
    Abstract: The present invention includes tetradentate platinum (II) complexes for narrow band green and red phosphorescent emitters. The present invention also includes blue emitting metal complexes with six-membered chelate rings based on fused carbazole. The present invention also includes organic light emitting diodes (OLEDS) including these complexes, and devices including these OLEDS.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 12, 2019
    Inventors: Jian Li, Zhi-Qiang Zhu
  • Patent number: 10411202
    Abstract: Tridentate cyclometalated complexes with rigid six-membered coordination rings of General Formula I having tunable emission wavelengths in the visible range. These emitters are suitable for full color displays and lighting applications.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: September 10, 2019
    Assignee: ARIZON BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
    Inventors: Jian Li, Zhi-Qiang Zhu
  • Publication number: 20190259963
    Abstract: The complexes disclosed herein are cyclometalated metal complexes of Formula (I) that are useful for full color displays and lighting applications.
    Type: Application
    Filed: November 26, 2018
    Publication date: August 22, 2019
    Inventors: Jian Li, Zhi-Qiang Zhu
  • Patent number: 10342453
    Abstract: A catch device and a shell liner for a medical imaging apparatus and a magnetic resonance imaging (MRI) apparatus that has an elastic arm, the elastic arm having a clamping portion, two bending portions located on two sides of the clamping portion and two end portions formed by extension of the ends of the two bending portions away from the clamping portion, the two end portions being used for being fixed to a liner of the first shell; and at least one roller, the roller being rotatably sheathed on the clamping portion of the elastic arm and clamping an edge of the second shell to the liner of the first shell by using an elastic force of the elastic arm, and an axial direction of the roller is parallel to the liner of the first shell and the edge of the second shell. The catch device achieves a simple and firm connection between apparatus shells, and meets requirements for a pleasing appearance and convenient application and maintenance.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: July 9, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Bernd Maciejewski, Jian Hua Pei, Wen Qiang You
  • Publication number: 20190103138
    Abstract: The disclosed technology includes methods and systems that reduce off-track write retry operations in shingled magnetic recording systems. In one implementation, the method includes writing data to an initial track, determining which side of the initial track is a shingled side, calculating a percentage of position error signal (PES) at a shingled side end of the initial track (PES1) when an off-track write operation occurs, determining whether the PES1 meets a first pre-determined threshold, continue writing data to a second track responsive to determining the PES1 is below a first pre-determined threshold, calculating a percentage of PES at a shingled side end of the second track (PES2), determining whether a combined value of PES1 and PES2 is above a second predetermined threshold to determine a probability value of the initial track being erased, and continue writing to a third track if the combined value is below the second predetermined threshold.
    Type: Application
    Filed: November 30, 2018
    Publication date: April 4, 2019
    Inventors: Jian Qiang, Xiong Liu, Choon Wei Ng, Sangyun Jung
  • Patent number: 10249338
    Abstract: The disclosed technology provides a method that improves SMR throughput in vibration in storage systems. In one implementation, the method comprises receiving a write command to write data on a first track in a band of a storage medium, performing a vibration detection scheme to identify vibration events, determining if a number of vibration events is above a predetermined threshold, skipping the first track responsive to determining the number of vibration events is above a predetermined threshold, seeking to a second track adjacent to the first track, increasing an OCLIM on the second track adjacent to the first track from a default OCLIM to an increased OCLIM, and shifting the writer center on the second track adjacent to the first track.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: April 2, 2019
    Assignee: SEAGATE TECHNOLOGY, LLC
    Inventors: Jian Qiang, Xiong Liu
  • Patent number: 10223272
    Abstract: Apparatus and method for managing metadata in a data storage device. In some embodiments, a metadata object has entries that describe data sets stored in a non-volatile write cache. During an archival (persistence) operation, the metadata object is divided into portions, and the portions are copied in turn to a non-volatile memory at a rate that maintains a measured latency within a predetermined threshold. A journal is formed of time-ordered entries that describe changes to the metadata object after the copying of the associated portions to the non-volatile memory. The journal is subsequently stored to the non-volatile memory, and may be subsequently combined with the previously stored portions to recreate the metadata object in a local memory. The measured performance latency may be related to a specified customer command completion time (CCT) for host commands.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: March 5, 2019
    Assignee: Seagate Technology LLC
    Inventors: Jian Qiang, Harry Tiotantra, Kai Chen, WenXiang Xie, Andrew Michael Kowles
  • Patent number: 10199247
    Abstract: Embodiments of the invention relate generally to directed self-assembly (DSA) and, more particularly, to the DSA of electronic components using diamagnetic levitation.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: February 5, 2019
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Anton Tkachenko, James Jian-qiang Lu
  • Publication number: 20190027187
    Abstract: The disclosed technology provides a method that improves CCT in SMR device systems. In one implementation, the method comprises writing data to a shingled magnetic recording (SMR) band in a storage device, determining whether an off-track write has occurred, identifying unsafe written data in response to determining that an off-track write has occurred, determining whether caching space is available upon identifying unsafe written data, continue writing data to the SMR band without a write retry upon determining that caching space is available, and writing unsafe written data to the available caching space. In another implementation, the method comprises receiving a request to repair an encroached track in an SMR band, recovering encroached data to a dynamic random-access memory, determining whether caching space is available, writing the recovered data to the available caching space upon determining that caching space is available, and merging other cached data in the SMR band.
    Type: Application
    Filed: July 21, 2017
    Publication date: January 24, 2019
    Inventors: Jian Qiang, Xiong Liu, WenXiang Xie
  • Patent number: 10176834
    Abstract: Methods, systems, and apparatuses are described for provisioning storage devices. An example method includes determining a write status of an adjacent track that is adjacent to a target track of a shingled magnetic recording (SMR) disk drive. The method may further include determining an offset for a write head based on the write status of the adjacent track and positioning the write head according to the offset.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: January 8, 2019
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Jian Qiang, Xiong Liu
  • Patent number: 10176849
    Abstract: The disclosed technology includes methods and systems that reduce off-track write retry operations in shingled magnetic recording systems. In one implementation, the method includes writing data to an initial track, determining which side of the initial track is a shingled side, calculating a percentage of position error signal (PES) at a shingled side end of the initial track (PES1) when an off-track write operation occurs, determining whether the PES1 meets a first pre-determined threshold, continue writing data to a second track responsive to determining the PES1 is below a first pre-determined threshold, calculating a percentage of PES at a shingled side end of the second track (PES2), determining whether a combined value of PES1 and PES2 is above a second predetermined threshold to determine a probability value of the initial track being erased, and continue writing to a third track if the combined value is below the second predetermined threshold.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: January 8, 2019
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Jian Qiang, Xiong Liu, Choon Wei Ng, Sangyun Jung
  • Publication number: 20180342607
    Abstract: Semiconductor structures and fabrication methods thereof are provided. An exemplary fabrication process includes providing a semiconductor substrate having a first region and a second region and having a plurality of first fins in the first region and a plurality of second fins in the second region; performing a first oxidation process on the first fins to form a first oxide layer on surfaces of the first fins and to cause corners between top surfaces and side surface of the first fins to form first rounded corners; and performing a second oxidation process on the second fins to form a second oxide layer on surfaces of the second fins and to cause corners between top surfaces and side surface of the second fins to form second rounded corners. A radius of curvature of the first rounded corner is different from a radius of curvature of the second rounded corner.
    Type: Application
    Filed: May 21, 2018
    Publication date: November 29, 2018
    Inventor: Jian Qiang HU
  • Publication number: 20180322902
    Abstract: The disclosed technology provides a method that improves SMR throughput in vibration in storage systems. In one implementation, the method comprises receiving a write command to write data on a first track in a band of a storage medium, performing a vibration detection scheme to identify vibration events, determining if a number of vibration events is above a predetermined threshold, skipping the first track responsive to determining the number of vibration events is above a predetermined threshold, seeking to a second track adjacent to the first track, increasing an OCLIM on the second track adjacent to the first track from a default OCLIM to an increased OCLIM, and shifting the writer center on the second track adjacent to the first track.
    Type: Application
    Filed: April 13, 2018
    Publication date: November 8, 2018
    Inventors: Jian Qiang, Xiong Liu
  • Publication number: 20180314636
    Abstract: The disclosed technology provides a method that reduces time to recover in storage systems. In one implementation, the method comprises entering an idle status, determining if there is an incomplete band update operation, invalidating a media scratch pad (MSP) by clearing headers responsive to determining there is no incomplete band update operation, performing a power cycle, reading an MSP header, and determining if an MSP header is valid. If a rude power cycle occurs and the MSP header is determined to be valid, an MSP is examined, and restored if required. If a safe power cycle occurs, an MSP restore operation is not required, reducing time to recover.
    Type: Application
    Filed: March 2, 2018
    Publication date: November 1, 2018
    Inventors: Jian Qiang, Sze Chek Tan
  • Publication number: 20180307609
    Abstract: Apparatus and method for managing metadata in a data storage device. In some embodiments, a metadata object has entries that describe data sets stored in a non-volatile write cache. During an archival (persistence) operation, the metadata object is divided into portions, and the portions are copied in turn to a non-volatile memory at a rate that maintains a measured latency within a predetermined threshold. A journal is formed of time-ordered entries that describe changes to the metadata object after the copying of the associated portions to the non-volatile memory. The journal is subsequently stored to the non-volatile memory, and may be subsequently combined with the previously stored portions to recreate the metadata object in a local memory. The measured performance latency may be related to a specified customer command completion time (CCT) for host commands.
    Type: Application
    Filed: April 25, 2017
    Publication date: October 25, 2018
    Inventors: Jian Qiang, Harry Tiotantra, Kai Chen, WenXiang Xie, Andrew Michael Kowles
  • Patent number: 9978417
    Abstract: The disclosed technology provides a system and method that improves command completion time in a shingled magnetic recording device system. In one implementation, the system and method include receiving a write command to write data to a first track in a band in a recording medium, seeking to a first track, reducing an on-cylinder limit (OCLIM) from a default OCLIM to a reduced OCLIM by a predetermined amount on the first track, performing write operations on the first track with the reduced OCLIM, and determining if a transfer of data to the first track band in the write operations has been substantially completed. Upon determining that a transfer of data to the first track in the write operations has been substantially completed, the OCLIM is restored from a reduced OCLIM to a default OCLIM and write operations are performed on tracks adjacent to the first track.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: May 22, 2018
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Jian Qiang, HiauChoon Kee, QuekLeong Choo, Choon Wei Ng, WenXiang Xie
  • Patent number: 9972353
    Abstract: The disclosed technology provides a method that improves SMR throughput in vibration in storage systems. In one implementation, the method comprises receiving a write command to write data on a first track in a band of a storage medium, performing a vibration detection scheme to identify vibration events, determining if a number of vibration events is above a predetermined threshold, skipping the first track responsive to determining the number of vibration events is above a predetermined threshold, seeking to a second track adjacent to the first track, increasing an OCLIM on the second track adjacent to the first track from a default OCLIM to an increased OCLIM, and shifting the writer center on the second track adjacent to the first track.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: May 15, 2018
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Jian Qiang, Xiong Liu
  • Patent number: 9971645
    Abstract: Apparatus and method for managing a media cache of a data storage device. In some embodiments, a media cache master table is maintained in a memory as a data structure having a plurality of entries that describe data sets stored in a non-volatile media cache memory. A first timecode stamp value is written to respective first and second locations in the table at the commencement of a data transfer operation to transfer data associated with the plurality of entries in the table. The first location is updated with a new, second timecode stamp value responsive to detection of an error condition that interrupts the data transfer operation. An error recovery operation is subsequently performed responsive to a detected mismatch between the timecode stamp values in the first and second locations.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: May 15, 2018
    Assignee: Seagate Technology LLC
    Inventors: Jian Qiang, WenXiang Xie, Thein Than Zaw, Brian T. Edgar
  • Publication number: 20180130488
    Abstract: Methods, systems, and apparatuses are described for provisioning storage devices. An example method includes determining a write status of an adjacent track that is adjacent to a target track of a shingled magnetic recording (SMR) disk drive. The method may further include determining an offset for a write head based on the write status of the adjacent track and positioning the write head according to the offset.
    Type: Application
    Filed: January 10, 2018
    Publication date: May 10, 2018
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: JIAN QIANG, Xiong Liu