Patents by Inventor Jiefeng (Lear) Zhang

Jiefeng (Lear) 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).

  • Patent number: 9697488
    Abstract: Various embodiments of a system and method for generating predictions for unit allocation in a materials processing network are described. Various embodiments may include a capacity planner for defining a model including, for each of a plurality of discrete periods of time, a corresponding representation of a materials processing network including materials handling facilities, constraints associated with ones of the materials handling facilities, and logic for determining efficient flows of materials within the materials processing network during that discrete period of time.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: July 4, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Qaseem Ahmed Shaikh, Mikael O. Weigelt, Jiefeng Shen
  • Publication number: 20170183228
    Abstract: The present invention relates to high efficient tubular catalytic steam reforming reactor configured from about 0.2 inch to about 2 inch inside diameter high temperature metal alloy tube or pipe and loaded with a plurality of rolled catalyst inserts comprising metallic monoliths. The catalyst insert substrate is formed from a single metal foil without a central supporting structure in the form of a spiral monolith. The single metal foil is treated to have 3-dimensional surface features that provide mechanical support and establish open gas channels between each of the rolled layers. This unique geometry accelerates gas mixing and heat transfer and provides a high catalytic active surface area. The small diameter, high aspect ratio tubular catalytic steam reforming reactors loaded with rolled catalyst inserts can be arranged in a multi-pass non-vertical parallel configuration thermally coupled with a heat source to carry out steam reforming of hydrocarbon-containing feeds.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 29, 2017
    Inventors: Jiefeng Lin, Sean M. Kelly
  • Publication number: 20170184807
    Abstract: An imaging device, an imaging apparatus, and an electronic device for imaging are disclosed. The imaging device includes an imaging sensor that operatively captures an image along an optical axis. The imaging device also includes a lens assembly, and the lens assembly includes a first lens and a second lens. The first lens and the second lens at least partially overlap each other in a first direction parallel to the optical axis. The lens holder operatively adjusts a relative arrangement between the first and second lens to focus the image on the imaging sensor.
    Type: Application
    Filed: March 28, 2016
    Publication date: June 29, 2017
    Inventor: Jiefeng Chen
  • Publication number: 20170086675
    Abstract: The present invention is directed to a method for real-time characterization of spatially-resolved tissue optical properties using OCT/LCI. Imaging data are acquired, processed, displayed and stored in real-time. The resultant tissue optical properties are then used to determine the diagnostic threshold and to determine the OCT/LCI detection sensitivity and specificity. Color-coded optical property maps are constructed to provide direct visual cues for surgeons to differentiate tumor versus non-tumor tissue. These optical property maps can be overlaid with the structural imaging data and/or Doppler results for efficient data display. Finally, the imaging system can also be integrated with existing systems such as tracking and surgical microscopes. An aiming beam is generally provided for interventional guidance. For intraoperative use, a cap/spacer may also be provided to maintain the working distance of the probe, and also to provide biopsy capabilities.
    Type: Application
    Filed: March 25, 2015
    Publication date: March 30, 2017
    Inventors: Xingde Li, Alfredo Quinones-Hinojosa, Elliot McVeigh, Kaisorn Chaichana, Carmen Kut, Jiefeng Xi
  • Publication number: 20170046387
    Abstract: The present invention discloses a method and apparatus for querying a nondeterministic graph, which are used to implement quick query of a nondeterministic graph, reduce query complexity, and improve query efficiency. The method comprises receiving a query instruction, where the query instruction is used to query a nondeterministic graph for data that satisfies a query condition; determining two vertices in the nondeterministic graph according to the query instruction; determining all possible paths that use one vertex in the two vertices as a start point and the other vertex as an end point; calculate a probability of a first event or a second event corresponding to each of the paths; and obtaining, according to the probability of the first event or the probability of the second event, a query result corresponding to the query instruction.
    Type: Application
    Filed: October 31, 2016
    Publication date: February 16, 2017
    Inventors: Jiefeng Cheng, Cheng He, Wei Fan
  • Publication number: 20170026599
    Abstract: An arrangement method of an image sensor array includes forming an M-row N-column non-standard rectangular pixel array with M×N image sensors, wherein the non-standard rectangular pixel array matches to optical distortion of an associated lens. The non-standard rectangular pixel array refers to that four edges of the non-standard rectangular are curves, and the M, N are an integer larger than or equal to 1. An image sensor array, an image acquisition component, and an electronic device are also described.
    Type: Application
    Filed: December 30, 2015
    Publication date: January 26, 2017
    Applicant: Lenovo (Beijing) Co., Ltd.
    Inventors: Ke He, Jiefeng Chen
  • Publication number: 20160375411
    Abstract: A dual function composite oxygen transport membrane having a layered structure of mixed conducting oxygen transport materials on a first side of a porous substrate and a reforming catalyst layer on an opposing second side of the porous substrate. The layered structure of the mixed conducting oxygen transport materials contains an intermediate porous layer of mixed conducting oxygen transport materials formed on the porous substrate with a dense impervious layer of mixed conducting oxygen transport materials over the intermediate porous layer, and an optional surface exchange layer of mixed conducting oxygen transport materials over the dense impervious layer. The layered structure and the reforming catalyst layer are formed in separate steps.
    Type: Application
    Filed: June 29, 2015
    Publication date: December 29, 2016
    Inventors: Jiefeng Lin, Pawel Plonczak, Sean M. Kelly, Uttam R. Doraswami, Jonathan A. Lane
  • Publication number: 20160381286
    Abstract: A control method, a camera device and an electronic equipment are provided in the disclosure. After acquiring a first control instruction, the lens of the camera device is controlled to perform a preset operation according to the first control instruction, until a preview image captured by the camera device meets a first preset requirement. The preset operation at least includes controlling the lens to form a first inclination angle with respect to an initial position of the lens. Thus the angle between a lens plane and an image plane is adjusted, i.e., the clarity at various parts of the image acquired by the camera device is adjusted, thus a target image desired by a user can be acquired by the camera device, thereby improving user experiences.
    Type: Application
    Filed: September 29, 2015
    Publication date: December 29, 2016
    Applicants: BEIJING LENOVO SOFTWARE LTD., LENOVO (BEIJING) CO., LTD.
    Inventor: Jiefeng CHEN
  • Publication number: 20160342068
    Abstract: It is disclosed according to the present application a camera motor and an electronic device. The camera motor includes: a lens assembly, a coil set, a holder, a coil bobbin assembly and a base. The coil set includes an optical image stabilizer coil and an autofocusing coil. The lens assembly is connected with the coil set, and the coil set is arranged in the holder, and the holder is arranged in the coil bobbin assembly, and the coil bobbin assembly is arranged in the base.
    Type: Application
    Filed: September 16, 2015
    Publication date: November 24, 2016
    Applicants: BEIJING LENOVO SOFTWARE LTD., LENOVO (BEIJING) CO., LTD.
    Inventor: Jiefeng CHEN
  • Publication number: 20160298963
    Abstract: Various embodiments provide methods of determining the quality factor of a resonating body in ways that are advantageous over previously known methods. For example, embodiments allow the determination of the quality factors of a resonating body without preventing the simultaneous use of the resonating body. For micromachined (“MEMS”) devices, embodiments allow the determination of the quality factors of a resonating body in a manner that is not dependent on transduction parameters of the MEMS device.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 13, 2016
    Inventors: Ronald Alan Kapusta, Jiefeng Yan, James Lin
  • Publication number: 20160227990
    Abstract: The present invention is directed to an achromatic endoscope which employs a diffractive microlens. Along with a broadband rotary joint and a custom 800 nm SD-OCT system, ultrahigh-resolution 3D volumetric imaging over a large area becomes possible. The diffractive microlens can be used directly with a GRIN lens, making the endoscope design simpler and cost effective. Preliminary ex vivo 3D intraluminal imaging was performed with the endoscope in conjunction with a home-built broadband rotary joint and a spectral-domain OCT system, demonstrating the performance of the diffractive endoscope. Considering the miniature OCT imaging probe is the required component for using the OCT technology in internal organs, the proposed approach will have a broad impact on endoscopic OCT imaging by improving OCT resolution in any applications that involve a miniature OCT probe, as intravascular OCT imaging, gastrointestinal (GI) tract imaging, airway imaging etc.
    Type: Application
    Filed: September 17, 2014
    Publication date: August 11, 2016
    Inventors: Xingde LI, Anqi ZHANG, Jiefeng XI
  • Patent number: 9331341
    Abstract: Platinum nanocatalysts on multi-walled carbon nanotubes (MWCNTs) functionalized with citric acid (CA) are disclosed, along with methods for the synthesis thereof.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: May 3, 2016
    Assignee: Arizona Board of Regents, acting for and on behalf of Arizona State University
    Inventors: Arunachala Kannan, Jiefeng Lin
  • Publication number: 20160091739
    Abstract: An optical module that achieves an adjustable aperture with a multilayer liquid crystal diaphragm, and an electronic apparatus using the optical module are described. The optical module includes at least one diaphragm layer having a light-transmission area that is fully transmissive and a variable light-transmission area filled with material having variable transmittance; and an electrode unit for applying an adjustment voltage to the at least one diaphragm layer. Transmittance of the variable light-transmission area varies in accordance with the adjustment voltage applied by the electrode unit.
    Type: Application
    Filed: February 5, 2015
    Publication date: March 31, 2016
    Applicant: LENOVO (BEIJING) CO., LTD.
    Inventors: Ke He, Jiefeng Chen
  • Patent number: 9110906
    Abstract: A file converting method for a computer system includes utilizing software for converting a full-virtualized file into a para-virtualized file when the computer system receives a click signal; and activating a virtual machine, and uploading the para-virtualized file to a cloud server.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: August 18, 2015
    Assignee: Wistron Corporation
    Inventors: Fan Cheng, Jiefeng Yin
  • Patent number: 8760201
    Abstract: Systems and methods for capacitance multiplication using one charge pump for a phase lock loop employ a digital controlled loop filter that operates in a time division mode. Embodiments of the loop filter block the current from the charge pump according to the digital control, such that the charge pump cannot charge or discharge the integral capacitor when the digital control is enabled. Because at least a portion of the current is blocked, it takes more time for the charge pump to charge or discharge the capacitor to a certain level. The capacitor then appears to be larger than its actual value with respect to operation of the phase lock loop.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: June 24, 2014
    Assignee: Analog Devices Technology
    Inventors: Ting Gao, Jiefeng Yan
  • Publication number: 20130138330
    Abstract: A system and method to optimize mass transport vehicle routing based on additional ton-mile cost information are disclosed. In one embodiment, a starting location and a plurality of customer locations associated with a warehouse and a plurality of customers, respectively, are identified. Furthermore, a plurality of pairs of locations is identified using the starting location and plurality of customer locations. Mileage cost information and ton-mile cost information are then dynamically computed for each of the plurality of pairs of locations. In addition, sets of mass transport vehicle routes between the starting location and plurality of customer locations are dynamically determined using the pairs of locations and a number of vehicles to be used. Moreover, trip cost information is computed, in real-time, for each set of mass transport vehicle routes. Also, an optimized set of mass transport vehicle routes is determined, in real-time, using the trip cost information.
    Type: Application
    Filed: November 25, 2011
    Publication date: May 30, 2013
    Inventors: JIEFENG XU, Ajesh Kapoor, Amit Maheshwari
  • Publication number: 20130005567
    Abstract: Platinum nanocatalysts on multi-walled carbon nanotubes (MWCNTs) functionalized with citric acid (CA) are disclosed, along with methods for the synthesis thereof.
    Type: Application
    Filed: March 17, 2011
    Publication date: January 3, 2013
    Inventors: Arunachala Kannan, Jiefeng Lin
  • Patent number: 8331509
    Abstract: A method and a device for cancelling transmitter interference in a transceiver, and a transceiver are provided. The method includes: coupling a part of radio frequency signals output from a transmitter, performing amplification, frequency conversion, analog-digital conversion, and digital filtration on the coupled signal by an interference receiver, and outputting a digital signal; performing adaptive equalization on the digital signal output from the interference receiver, and delaying predetermined time of the digital signal output from a receiver, and subtracting the equalized digital signal from the delayed digital signal.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: December 11, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Wei Wang, Tao Pu, Jiefeng Deng, Siqing Ye
  • Publication number: 20120253995
    Abstract: A system and method for merchandise inventory management to maximize gross margin is disclosed. In one embodiment, the method includes modeling inventory to maximize gross margin as a function of replenishment of each item in each location based on optimum customer service level. Further, a desired customer service level range is determined. Furthermore, a safety stock level is computed for each customer service level in the determined customer service level range based on supplier information and forecasted future demand. In addition, replenishment quantity is computed for each customer service level in the determined customer service level range based on the computed safety stock level, lost sales information, markdown costs, and economic order quantity. Moreover, gross margin is computed for each customer service level in the determined customer service level range based on the computed replenishment quantity, markdown schedule and other financial information.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Inventors: AMIT BOOB, Ajesh Kapoor, Jiefeng Xu, Dalbir Arora
  • Patent number: 8255414
    Abstract: One embodiment selects from a set of query-suggestion pairs a first query and a subset of query-suggestion pairs that each has the first query as its query; computes a Log Likelihood Ratio (LLR) value for each query-suggestion pair from the subset of query-suggestion pairs; ranks the subset of query-suggestion pairs according to their respective LLR values; removes from the subset of query-suggestion pairs all query-suggestion pairs whose LLR values are below a predetermined LLR threshold; computes a Pointwise Mutual Information (PMI) value for each remaining query suggestion pair from the subset of query-suggestion pairs; removes from the subset of query-suggestion pairs all query-suggestion pairs whose PMI values are below a predetermine PMI threshold; and constructs a ranked set of suggestions for the first query, wherein the ranked set of suggestions comprises one or more suggestions of the remaining query-suggestion pairs from the subset of query-suggestion pairs.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: August 28, 2012
    Assignee: Yahoo! Inc.
    Inventors: Chi-Hoon Lee, Eric Crestan, Jiefeng Shen, Richard Allan Kasperski, Su-Lin Wu, Omer Emre Velipasaoglu, Benoit Dumoulin