Patents by Inventor Xiaonan Chen

Xiaonan Chen 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: 12093777
    Abstract: The present disclosure relates to the field of information identification. Disclosed are a method and terminal for identifying a barcode. The method comprises: obtaining an image of a barcode, and according to the calibration information of a preset calibration region, identifying the position of the calibration region in the image; identifying the position of an information code region in the image according to the position of the calibration region in the image, and a preset position relationship between the calibration region and the information code region in the image; and acquiring information on the position of the information code region in the image to obtain the information of the information code region.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: September 17, 2024
    Assignee: BEIJING JINGDONG ZHENSHI INFORMATION TECHNOLOGY CO., LTD.
    Inventors: Haiming Yu, Zhiqiang Xi, Xiaonan Chen
  • Publication number: 20230297795
    Abstract: The present disclosure relates to the field of information identification. Disclosed are a method and terminal for identifying a barcode. The method comprises: obtaining an image of a barcode, and according to the calibration information of a preset calibration region, identifying the position of the calibration region in the image; identifying the position of an information code region in the image according to the position of the calibration region in the image, and a preset position relationship between the calibration region and the information code region in the image; and acquiring information on the position of the information code region in the image to obtain the information of the information code region.
    Type: Application
    Filed: May 10, 2021
    Publication date: September 21, 2023
    Inventors: Haiming YU, Zhiqiang XI, Xiaonan CHEN
  • Patent number: 11631455
    Abstract: A compute-in-memory bitcell is provided that includes a pair of cross-coupled inverters for storing a stored bit. The compute-in-memory bitcell includes a logic gate for multiplying the stored bit with an input vector bit. An output node for the logic gate connects to a second plate of a capacitor. A first plate of the capacitor connects to a read bit line. A write driver controls a power supply voltage to the cross-coupled inverters, the first switch, and the second switch to capacitively write the stored bit to the pair of cross-coupled inverters.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: April 18, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Seyed Arash Mirhaj, Xiaonan Chen, Ankit Srivastava, Sameer Wadhwa, Zhongze Wang
  • Patent number: 11626156
    Abstract: Compute-in-memory (CIM) bit cell array circuits include CIM bit cell circuits for multiply-accumulate operations. The CIM bit cell circuits include a memory bit cell circuit for storing a weight data in true and complement form. The CIM bit cell circuits include a true pass-gate circuit and a complement pass-gate circuit for generating a binary product of the weight data and an activation input on a product node. An RWL circuit couples the product node to a ground voltage for initialization. The CIM bit cell circuits also include a plurality of consecutive gates each coupled to at least one of the memory bit cell circuit, the true pass-gate circuit, the complement pass-gate circuit, and the RWL circuit. Each of the CIM bit cell circuits in the CIM bit cell array circuit is disposed in an orientation of a CIM bit cell circuit layout including the RWL circuit.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: April 11, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaonan Chen, Zhongze Wang
  • Patent number: 11581037
    Abstract: Digital compute-in-memory (DCIM) bit cell circuit layouts and DCIM array circuits for multiple operations per column are disclosed. A DCIM bit cell array circuit including DCIM bit cell circuits comprising exemplary DCIM bit cell circuit layouts disposed in columns is configured to evaluate the results of multiple multiply operations per clock cycle. The DCIM bit cell circuits in the DCIM bit cell circuit layouts each couples to one of a plurality of column output lines in a column. In this regard, in each cycle of a system clock, each of the plurality of column output lines receives a result of a multiply operation of a DCIM bit cell circuit coupled to the column output line. The DCIM bit cell array circuit includes digital sense amplifiers coupled to each of the plurality of column output lines to reliably evaluate a result of a plurality of multiply operations per cycle.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: February 14, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaonan Chen, Zhongze Wang, Yandong Gao, Mustafa Badaroglu
  • Publication number: 20220392524
    Abstract: Digital compute-in-memory (DCIM) bit cell circuit layouts and DCIM array circuits for multiple operations per column are disclosed. A DCIM bit cell array circuit including DCIM bit cell circuits comprising exemplary DCIM bit cell circuit layouts disposed in columns is configured to evaluate the results of multiple multiply operations per clock cycle. The DCIM bit cell circuits in the DCIM bit cell circuit layouts each couples to one of a plurality of column output lines in a column. In this regard, in each cycle of a system clock, each of the plurality of column output lines receives a result of a multiply operation of a DCIM bit cell circuit coupled to the column output line. The DCIM bit cell array circuit includes digital sense amplifiers coupled to each of the plurality of column output lines to reliably evaluate a result of a plurality of multiply operations per cycle.
    Type: Application
    Filed: June 8, 2021
    Publication date: December 8, 2022
    Inventors: Xiaonan Chen, Zhongze Wang, Yandong Gao, Mustafa Badaroglu
  • Publication number: 20220230679
    Abstract: A compute-in-memory bitcell is provided that includes a pair of cross-coupled inverters for storing a stored bit. The compute-in-memory bitcell includes a logic gate for multiplying the stored bit with an input vector bit. An output node for the logic gate connects to a second plate of a capacitor. A first plate of the capacitor connects to a read bit line. A write driver controls a power supply voltage to the cross-coupled inverters, the first switch, and the second switch to capacitively write the stored bit to the pair of cross-coupled inverters.
    Type: Application
    Filed: January 19, 2021
    Publication date: July 21, 2022
    Inventors: Seyed Arash MIRHAJ, Xiaonan CHEN, Ankit SRIVASTAVA, Sameer WADHWA, Zhongze WANG
  • Publication number: 20220172770
    Abstract: Compute-in-memory (CIM) bit cell array circuits include CIM bit cell circuits for multiply-accumulate operations. The CIM bit cell circuits include a memory bit cell circuit for storing a weight data in true and complement form. The CIM bit cell circuits include a true pass-gate circuit and a complement pass-gate circuit for generating a binary product of the weight data and an activation input on a product node. An RWL circuit couples the product node to a ground voltage for initialization. The CIM bit cell circuits also include a plurality of consecutive gates each coupled to at least one of the memory bit cell circuit, the true pass-gate circuit, the complement pass-gate circuit, and the RWL circuit. Each of the CIM bit cell circuits in the CIM bit cell array circuit is disposed in an orientation of a CIM bit cell circuit layout including the RWL circuit.
    Type: Application
    Filed: August 17, 2021
    Publication date: June 2, 2022
    Inventors: Xiaonan Chen, Zhongze Wang
  • Publication number: 20220108742
    Abstract: Certain aspects of the present disclosure provide a circuit for in-memory computation.
    Type: Application
    Filed: October 2, 2020
    Publication date: April 7, 2022
    Inventors: Xia LI, Zhongze WANG, Xiaonan CHEN, Xiaochun ZHU
  • Patent number: 10991427
    Abstract: Memory programming methods and memory systems are described. One example memory programming method includes first applying a first signal to a memory cell to attempt to program the memory cell to a desired state, wherein the first signal corresponds to the desired state, after the first applying, determining that the memory cell failed to place in the desired state, after the determining, second applying a second signal to the memory cell, wherein the second signal corresponds to another state which is different than the desired state, and after the second applying, third applying a third signal to the memory cell to program the memory cell to the desired state, wherein the third signal corresponds to the desired state. Additional method and apparatus are described.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: April 27, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Jonathan Strand, Adam Johnson, Xiaonan Chen, Durai Vishak Nirmal Ramaswamy
  • Patent number: 10964380
    Abstract: A memory circuit that includes a memory bitcell. The memory bitcell includes a six-transistor circuit configuration, a first transistor coupled to the six-transistor circuit configuration, a second transistor coupled to the first transistor, a third transistor coupled to the second transistor, and a capacitor coupled to the second transistor and the third transistor. The memory circuit includes a read word line coupled to the third transistor, a read bit line coupled to the third transistor, and an activation line coupled to the second transistor. The memory bitcell may be configured to operate as a NAND memory bitcell. The memory bitcell may be configured to operate as a NOR memory bitcell.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: March 30, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Zhongze Wang, Yandong Gao, Xia Li, Ye Lu, Xiaochun Zhu, Xiaonan Chen
  • Publication number: 20190279713
    Abstract: Memory programming methods and memory systems are described. One example memory programming method includes first applying a first signal to a memory cell to attempt to program the memory cell to a desired state, wherein the first signal corresponds to the desired state, after the first applying, determining that the memory cell failed to place in the desired state, after the determining, second applying a second signal to the memory cell, wherein the second signal corresponds to another state which is different than the desired state, and after the second applying, third applying a third signal to the memory cell to program the memory cell to the desired state, wherein the third signal corresponds to the desired state. Additional method and apparatus are described.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 12, 2019
    Applicant: Micron Technology, Inc.
    Inventors: Jonathan Strand, Adam Johnson, Xiaonan Chen, Durai Vishak Nirmal Ramaswamy
  • Patent number: 10340370
    Abstract: Asymmetric gated fin field effect transistor (FET) (finFET) diodes are disclosed. In one aspect, an asymmetric gated finFET diode employs a substrate that includes a well region of a first-type and a fin disposed in a direction. A first source/drain region is employed that includes a first-type doped material disposed in the fin having a first length in the direction. A second source/drain region having a second length in the direction larger than the first length is employed that includes a second-type doped material disposed in the fin. A gate region is disposed between the first source/drain region and the second source/drain region and has a third length in the direction that is larger than the first length and larger than the second length. The wider gate region increases a length of a depletion region of the asymmetric gated finFET diode, which reduces current leakage while avoiding increase in area.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: July 2, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Hao Wang, Haining Yang, Xiaonan Chen
  • Patent number: 10304531
    Abstract: Memory programming methods and memory systems are described. One example memory programming method includes first applying a first signal to a memory cell to attempt to program the memory cell to a desired state, wherein the first signal corresponds to the desired state, after the first applying, determining that the memory cell failed to place in the desired state, after the determining, second applying a second signal to the memory cell, wherein the second signal corresponds to another state which is different than the desired state, and after the second applying, third applying a third signal to the memory cell to program the memory cell to the desired state, wherein the third signal corresponds to the desired state. Additional method and apparatus are described.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: May 28, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Jonathan Strand, Adam Johnson, Xiaonan Chen, Durai Vishak Nirmal Ramaswamy
  • Publication number: 20190156895
    Abstract: A semiconductor device for a one-time programmable (OTP) memory according to some examples of the disclosure includes a gate, a dielectric region below the gate, a source terminal below the dielectric region and offset to one side, a drain terminal below the dielectric region and offset to an opposite side from the source terminal, a drain side charge trap in the dielectric region capable of programming the semiconductor device, and a source side charge trap in the dielectric region opposite the drain side charge trap and capable of programming the semiconductor device.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Inventors: Xia LI, Xiao LU, Xiaonan CHEN, Zhongze WANG
  • Patent number: 10290352
    Abstract: A semiconductor device for a one-time programmable (OTP) memory according to some examples of the disclosure includes a gate, a dielectric region below the gate, a source terminal below the dielectric region and offset to one side, a drain terminal below the dielectric region and offset to an opposite side from the source terminal, a drain side charge trap in the dielectric region capable of programming the semiconductor device, and a source side charge trap in the dielectric region opposite the drain side charge trap and capable of programming the semiconductor device.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: May 14, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Xia Li, Xiao Lu, Xiaonan Chen, Zhongze Wang
  • Publication number: 20180158935
    Abstract: Asymmetric gated fin field effect transistor (FET) (finFET) diodes are disclosed. In one aspect, an asymmetric gated finFET diode employs a substrate that includes a well region of a first-type and a fin disposed in a direction. A first source/drain region is employed that includes a first-type doped material disposed in the fin having a first length in the direction. A second source/drain region having a second length in the direction larger than the first length is employed that includes a second-type doped material disposed in the fin. A gate region is disposed between the first source/drain region and the second source/drain region and has a third length in the direction that is larger than the first length and larger than the second length. The wider gate region increases a length of a depletion region of the asymmetric gated finFET diode, which reduces current leakage while avoiding increase in area.
    Type: Application
    Filed: December 7, 2016
    Publication date: June 7, 2018
    Inventors: Hao Wang, Haining Yang, Xiaonan Chen
  • Patent number: 9876123
    Abstract: An apparatus includes a metal gate, a substrate material, and an oxide layer between the metal gate and the substrate material. The oxide layer includes a hafnium oxide layer contacting the metal gate and a silicon dioxide layer contacting the substrate material and contacting the hafnium oxide layer. The metal gate, the substrate material, and the oxide layer are included in a one-time programmable (OTP) memory device. The OTP memory device includes a transistor. A non-volatile state of the OTP memory device is based on a threshold voltage shift of the OTP memory device.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: January 23, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Xia Li, Jeffrey Junhao Xu, Xiao Lu, Bin Yang, Jun Yuan, Xiaonan Chen, Zhongze Wang
  • Publication number: 20170365339
    Abstract: Memory programming methods and memory systems are described. One example memory programming method includes first applying a first signal to a memory cell to attempt to program the memory cell to a desired state, wherein the first signal corresponds to the desired state, after the first applying, determining that the memory cell failed to place in the desired state, after the determining, second applying a second signal to the memory cell, wherein the second signal corresponds to another state which is different than the desired state, and after the second applying, third applying a third signal to the memory cell to program the memory cell to the desired state, wherein the third signal corresponds to the desired state. Additional method and apparatus are described.
    Type: Application
    Filed: August 30, 2017
    Publication date: December 21, 2017
    Applicant: Micron Technology, Inc.
    Inventors: Jonathan Strand, Adam Johnson, Xiaonan Chen, Durai Vishak Nirmal Ramaswamy
  • Patent number: 9812188
    Abstract: An apparatus includes a static random-access memory and circuitry configured to initiate a corrective action associated with the static random-access memory. The corrective action may be initiated based on a number of static random-access memory cells that have a particular state responsive to a power-up of the static random-access memory.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: November 7, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Niladri Narayan Mojumder, Zhongze Wang, Xiaonan Chen, Stanley Seungchul Song, Choh Fei Yeap