Patents by Inventor Qiwei Zhang

Qiwei Zhang 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: 20240096989
    Abstract: The present application discloses an MV device, wherein a first gate structure of the MV device is formed by stacking a first gate dielectric layer and a first gate conductive material layer. The first gate dielectric layer is divided into a body gate dielectric layer and an edge gate dielectric layer. The body gate dielectric layer is located in a middle region, and the edge gate dielectric layer surrounds the periphery of the body gate dielectric layer. A channel region is located in a surface of the semiconductor substrate between the lightly doped drain regions on the two sides of the first gate structure. In a channel length direction, the top of the channel region is covered by the body gate dielectric layer. The present application also discloses a method for manufacturing the MV device.
    Type: Application
    Filed: July 28, 2023
    Publication date: March 21, 2024
    Inventors: Qiwei WANG, Tao LIU, Zhigang ZHANG, Yaoyu ZHAN, Haoyu CHEN
  • Publication number: 20210010062
    Abstract: Provided is a method of analyzing interactions between nucleic acid segments in a nucleic acid complex. Specifically, restriction enzymes that recognize four-base site are used for digestion, followed by a two-step ligation method. The overall process is simple and easy to control, realizing the efficient and sensitive detection of nucleic acid interaction segments.
    Type: Application
    Filed: July 31, 2020
    Publication date: January 14, 2021
    Applicant: TSINGHUA UNIVERSITY
    Inventors: Yang CHEN, Zhengyu LIANG, Yanjian LI, Guipeng LI, Qiwei ZHANG
  • Patent number: 10839303
    Abstract: Disclosed herein are system, method, and computer-readable device embodiments for automatically correcting erroneous license plate numbers generated by automatic license plate recognition. An embodiment operates by selecting a set of adjacent license plate recognition (LPR) stations comprising a first LPR station, a second LPR station, and a third LPR station, accessing an error pattern probability matrix for at least the third recognized license plate number accessed in relation to at least one of the first recognized license plate number or the second recognized license plate number differing from the third recognized license plate number, and determining a corrected license plate number based on the error pattern probability matrix. In some embodiments, LPR correction may be accurately realized even when an erroneous license plate numbers are missing characters, such as by visual obstruction from an LPR camera or sensor, or has no characters in common with the real license plate number.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: November 17, 2020
    Assignee: SAP SE
    Inventors: Chang Yi, Qiong Luo, Guangji Zhu, Chao Yu, Qiwei Zhang, Yinling Ni
  • Patent number: 10692028
    Abstract: Described herein is a framework for optimal demand-based allocation. In accordance with one aspect of the framework, trip data is extracted from vehicle operation data received from one or more vehicle data devices servicing a region of interest. Vehicle demands for multiple tiles of the region of interest and mutual travel times between neighboring tiles are estimated based at least in part on the trip data. A set of candidate tiles for allocating vehicle stations may then be determined by minimizing total travel time based on the mutual travel times and vehicle demands.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: June 23, 2020
    Assignee: SAP SE
    Inventors: Jing Liu, Zhongcun Wang, Daihui Zhu, Frank Spruenken, Yongxun Li, Qiwei Zhang, Ye Jin
  • Patent number: 10559209
    Abstract: Described herein is a framework to facilitate vehicle position planning. In accordance with one aspect of the framework, transition information is determined based on the vehicle data, wherein the transition information includes pairs of starting and ending road segments and corresponding passenger states. Short-term demand for vehicles may be calculated based on the transition information and the historical transactional records. The short-term demand may then be used to generate a cruising recommendation.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: February 11, 2020
    Assignee: SAP SE
    Inventors: Qiwei Zhang, Junpeng Hu, Ye Jin
  • Patent number: 10255514
    Abstract: Disclosed herein are system, method, and computer program product embodiments for automatically detecting cloned vehicle identifiers. An embodiment operates by determining legitimate trajectory information and illegitimate trajectory information corresponding to vehicular travel in a geographic area, and training a decision model to detect a cloned vehicle identifier based on the legitimate trajectory information and the illegitimate trajectory information. Furthermore, the embodiment identifies vehicles potentially using a cloned vehicle identifier based on the decision model and common driving patterns within the geographic area. In some embodiments, enforcement agents are notified of the vehicles potentially using a cloned vehicle identifier.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: April 9, 2019
    Assignee: SAP SE
    Inventors: Chang Yi, Qiong Luo, Guangji Zhu, Chao Yu, Qiwei Zhang, Yinling Ni
  • Publication number: 20190057275
    Abstract: Disclosed herein are system, method, and computer program product embodiments for automatically detecting cloned vehicle identifiers. An embodiment operates by determining legitimate trajectory information and illegitimate trajectory information corresponding to vehicular travel in a geographic area, and training a decision model to detect a cloned vehicle identifier based on the legitimate trajectory information and the illegitimate trajectory information. Furthermore, the embodiment identifies vehicles potentially using a cloned vehicle identifier based on the decision model and common driving patterns within the geographic area. In some embodiments, enforcement agents are notified of the vehicles potentially using a cloned vehicle identifier.
    Type: Application
    Filed: August 21, 2017
    Publication date: February 21, 2019
    Inventors: Chang YI, Qiong Luo, Guangji Zhu, Chao Yu, Qiwei Zhang, Yinling Ni
  • Publication number: 20190057315
    Abstract: Disclosed herein are system, method, and computer-readable device embodiments for automatically correcting erroneous license plate numbers generated by automatic license plate recognition. An embodiment operates by selecting a set of adjacent license plate recognition (LPR) stations comprising a first LPR station, a second LPR station, and a third LPR station, accessing an error pattern probability matrix for at least the third recognized license plate number accessed in relation to at least one of the first recognized license plate number or the second recognized license plate number differing from the third recognized license plate number, and determining a corrected license plate number based on the error pattern probability matrix. In some embodiments, LPR correction may be accurately realized even when an erroneous license plate numbers are missing characters, such as by visual obstruction from an LPR camera or sensor, or has no characters in common with the real license plate number.
    Type: Application
    Filed: August 21, 2017
    Publication date: February 21, 2019
    Inventors: Chang YI, Qiong Luo, Guangji Zhu, Chao Yu, Qiwei Zhang, Yinling Ni
  • Patent number: 10163038
    Abstract: Described herein is a descriptive framework to facilitate error detection in recognition data. In accordance with one aspect of the framework, at least one erroneous record is detected in a first set of recognition data. The framework may determine a correction of a first recognized identifier in the erroneous record by searching a second set of recognition data for a matching record with a second recognized identifier substantially similar to the first recognized identifier. A report may then be generated to present the detected erroneous record and the determined correction.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: December 25, 2018
    Assignee: SAP SE
    Inventors: Ke Wang, Yinling Ni, Ling Chen, Ye Jin, Qiwei Zhang, Jing Liu, Xin Li, Chao Yu
  • Patent number: 10163339
    Abstract: Described herein is a framework to monitor traffic congestion. In accordance with one aspect of the framework, the framework receives vehicle data from vehicle data sources located in a region of interest. The framework may determine a sample size and an average speed for an edge of the region of interest based on the vehicle data. Congestion probability may then be determined based on the sample size and average speed. A report may be presented based on the congestion probability.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: December 25, 2018
    Assignee: SAP SE
    Inventors: Jing Liu, Qiwei Zhang, Jun Liu, Yinling Ni
  • Publication number: 20180165952
    Abstract: Described herein is a framework to monitor traffic congestion. In accordance with one aspect of the framework, the framework receives vehicle data from vehicle data sources located in a region of interest. The framework may determine a sample size and an average speed for an edge of the region of interest based on the vehicle data. Congestion probability may then be determined based on the sample size and average speed. A report may be presented based on the congestion probability.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 14, 2018
    Inventors: Jing LIU, Qiwei ZHANG, Jun LIU, Yinling NI
  • Publication number: 20180130356
    Abstract: Described herein is a framework to facilitate vehicle position planning. In accordance with one aspect of the framework, transition information is determined based on the vehicle data, wherein the transition information includes pairs of starting and ending road segments and corresponding passenger states. Short-term demand for vehicles may be calculated based on the transition information and the historical transactional records. The short-term demand may then be used to generate a cruising recommendation.
    Type: Application
    Filed: November 10, 2016
    Publication date: May 10, 2018
    Inventors: Qiwei ZHANG, Junpeng HU, Ye JIN
  • Publication number: 20170185868
    Abstract: Described herein is a descriptive framework to facilitate error detection in recognition data. In accordance with one aspect of the framework, at least one erroneous record is detected in a first set of recognition data. The framework may determine a correction of a first recognized identifier in the erroneous record by searching a second set of recognition data for a matching record with a second recognized identifier substantially similar to the first recognized identifier. A report may then be generated to present the detected erroneous record and the determined correction.
    Type: Application
    Filed: December 24, 2015
    Publication date: June 29, 2017
    Inventors: Ke Wang, Yinling Ni, Ling Chen, Ye Jin, Qiwei Zhang, Jing Liu, Xin Li, Chao Yu
  • Publication number: 20170169377
    Abstract: Described herein is a framework for optimal demand-based allocation. In accordance with one aspect of the framework, trip data is extracted from vehicle operation data received from one or more vehicle data devices servicing a region of interest. Vehicle demands for multiple tiles of the region of interest and mutual travel times between neighboring tiles are estimated based at least in part on the trip data. A set of candidate tiles for allocating vehicle stations may then be determined by minimizing total travel time based on the mutual travel times and vehicle demands.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 15, 2017
    Inventors: Jing LIU, Zhongcun WANG, Daihui ZHU, Frank SPRUENKEN, Yongxun LI, Qiwei ZHANG, Ye JIN
  • Patent number: 9564048
    Abstract: A framework for origin-destination (OD) analysis of vehicle trajectory data is described herein. In accordance with one aspect, a vehicle trajectory dataset is provided to an OD analyzer. The vehicle trajectory dataset includes vehicle trajectory data collected from a sensor network having a plurality of sensor stations for detecting vehicles. The sensor stations of the sensor network are distributed in a geographical area of interest, where the vehicle trajectory data include trajectories of vehicles captured by the sensor network. The vehicle trajectory dataset may be analyzed by the OD analyzer to determine an origin and a destination of trips for trajectories of the vehicles in the vehicle trajectory dataset.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: February 7, 2017
    Assignee: SAP SE
    Inventors: Jing Liu, Ye Jin, Qiwei Zhang, Zhongcun Wang
  • Publication number: 20160180705
    Abstract: A framework for origin-destination (OD) analysis of vehicle trajectory data is described herein. In accordance with one aspect, a vehicle trajectory dataset is provided to an OD analyzer. The vehicle trajectory dataset includes vehicle trajectory data collected from a sensor network having a plurality of sensor stations for detecting vehicles. The sensor stations of the sensor network are distributed in a geographical area of interest, where the vehicle trajectory data include trajectories of vehicles captured by the sensor network. The vehicle trajectory dataset may be analyzed by the OD analyzer to determine an origin and a destination of trips for trajectories of the vehicles in the vehicle trajectory dataset.
    Type: Application
    Filed: December 18, 2014
    Publication date: June 23, 2016
    Inventors: Jing LIU, Ye JIN, Qiwei ZHANG, Zhongcun WANG
  • Patent number: 9135815
    Abstract: A method and system to obtain taxi location data for a plurality of taxis located in a geographic region; obtain street data for a plurality of streets operating in the geographic region, the street data defining a location of the plurality of streets; store the taxi location data and the street data in an in-memory database management system; generate a rating for the plurality of streets associated with at least one currently active taxi, the rating providing an indication of a likelihood the at least one currently active taxi is available for a fare; and provide an output of the rating.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: September 15, 2015
    Assignee: SAP SE
    Inventors: Ye Jin, Qiwei Zhang, Yinling Ni, Lei Ding, Ke Wang, Daihui Zhu
  • Publication number: 20150002319
    Abstract: A method and system to obtain taxi location data for a plurality of taxis located in a geographic region; obtain street data for a plurality of streets operating in the geographic region, the street data defining a location of the plurality of streets; store the taxi location data and the street data in an in-memory database management system; generate a rating for the plurality of streets associated with at least one currently active taxi, the rating providing an indication of a likelihood the at least one currently active taxi is available for a fare; and provide an output of the rating.
    Type: Application
    Filed: July 3, 2013
    Publication date: January 1, 2015
    Inventors: Ye Jin, Qiwei Zhang, Yinling Ni, Lei Ding, Ke Wang, Daihui Zhu
  • Publication number: 20140056041
    Abstract: A power converter system includes a converter configured to be coupled to a power generation unit for receiving power from the power generation unit, and a bus coupled to the converter, wherein a voltage is generated across the bus when electricity is conducted through the power converter system. The power converter system also includes an inverter coupled to the bus, wherein the inverter is configured to supply power to an electrical distribution network. A control system is coupled to at least one of the converter and the inverter, wherein the control system is configured to adjust an operation of the at least one of the converter and the inverter to reduce the voltage across the bus during at least one of a low voltage event and a high voltage event.
    Type: Application
    Filed: May 18, 2011
    Publication date: February 27, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Huibin Zhu, David Smith, Maozhong Gong, Jun Zhu, Allen Ritter, Robert Gregory Wagoner, Anthony Galbraith, Xueqin Wu, Qiwei Zhang
  • Patent number: 7774224
    Abstract: Techniques for organizing events via an electronic organizer are described herein. In one embodiment, an example of a process includes, but is not limited to, dynamically accessing a first event organization system over a network to retrieve a first event data representing one or more events scheduled by the first event organization system, and presenting the first event data in a second event organization system as if the first event data is scheduled by the second event organization system, wherein the first and second event organization systems are incompatible. Other methods and apparatuses are also described.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: August 10, 2010
    Assignee: SAP AG
    Inventors: Youneng Xiao, Hartmut K. Vogler, Qiwei Zhang