Patents by Inventor Xiaopeng Li

Xiaopeng Li 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: 20180255227
    Abstract: A control method of an electronic apparatus includes determining whether an imaging device is in focus when an imaging command is received; deciding a threshold of an imaging wait time based on a current frame rate of the imaging device and a preset focusing frame number when the imaging device is not in focus; controlling a focusing process of the imaging device when the imaging wait time is less than the threshold; and controlling the imaging device for imaging when the imaging wait time being greater than or equal to the threshold. A control device for carrying out the control method and an electronic apparatus having the control device are also provided.
    Type: Application
    Filed: October 24, 2017
    Publication date: September 6, 2018
    Inventors: Xiaopeng LI, Xinlan HE, Shijie ZHUO
  • Publication number: 20180152642
    Abstract: A method and an apparatus for shooting an image and a terminal device are provided. The method is applied in a terminal device having a first camera assembly and a second camera assembly, and includes: controlling n adjacent pixel points corresponding to a same filter unit in the second image sensor to be under respective different amounts of exposure; obtaining a first image and a second image of an object respectively by the first image sensor and the second image sensor; performing an image splitting on the second image to obtain a third image having a same number of pixels as the first image; performing an image composition on the third image and the first image to obtain a high dynamic range image of the object.
    Type: Application
    Filed: June 14, 2017
    Publication date: May 31, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Xiaopeng LI, Gong ZHANG
  • Publication number: 20180152616
    Abstract: Embodiments of the present invention provide a focusing processing method and apparatus, and a terminal device. The method includes: obtaining a first image collected by n/2 pixel points on a left side of a combination pixel in the second image sensor and a second image collected by n/2 pixel points on a right side of the combination pixel in the second image sensor; determining a phase difference between the first image and the second image and determining whether the phase difference is in a preset range; and controlling a first motor in the first camera assembly to drive a first camera to move according to the phase difference and depending on a preset strategy, if the phase difference is not in the preset range.
    Type: Application
    Filed: June 7, 2017
    Publication date: May 31, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Xiaopeng LI, Gong ZHANG
  • Publication number: 20180150968
    Abstract: A camera assembly, a method for tracking a target portion based on the camera assembly, and an electronic device are provided. The camera assembly includes: a first camera; a first motor for driving the first camera to move; a second camera, comprising a plurality of pixel blocks each being formed of a plurality of photosensitive pixels and configured to obtain a first photodiode pixel by capturing a target portion of an object to be photographed through a first part of the plurality of photosensitive pixels and obtain a second photodiode pixel by capturing the target portion through a second part of the plurality of photosensitive pixels when the target portion is detected; a controller, configured to obtain a global photodiode pixel, calculate a phase difference and control the first motor to drive the first camera to move to an in-focus position according to the phase difference.
    Type: Application
    Filed: June 14, 2017
    Publication date: May 31, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Xiaopeng LI
  • Patent number: 9970270
    Abstract: A sand control screen pipe includes couplings, movable spacer bushes, an outer movable radial slotted screen pipe, a split supporting ring and an inner axial slotted screen pipe. In downhole sand control construction work, a movable combined sand control pipe of axial and radial slotted screen pipes is required to be aligned with an oil layer position, this sand control screen pipe adopts the outer radial slotted screen pipe and the inner axial slotted screen pipe for blocking sand, and the outer radial slotted screen pipe can carry out limited axial movement along the inner axial slotted screen pipe and free rotational motion around the axial line of the inner axial slotted screen pipe, so that the controlled sand can be effectively prevented from hardening and an oil leakage channel is kept smooth for a long time to improve the production efficiency of an oil well.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 15, 2018
    Assignee: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
    Inventors: Yonghong Liu, Renjie Ji, Baoping Cai, Quansheng Zhang, Xiaopeng Li, Qingyun Li
  • Publication number: 20170292008
    Abstract: Disclosed herein are self-healing conductive network compositions. The networks can contain one or more conductive polymers and one or more supramolecular complexes. The supramolecular complex can be introduced into conductive polymer matrix, resulting in a network of the two components. In this network, the nanostructured conductive polymer gel constructs a 3D network to promote the transport of electrons and mechanically reinforce the network while the supramolecular complex contributes to self-healing property and also conductivity. The networks disclosed herein are useful for various applications such as self-healing electronics, artificial skins, soft robotics and biomimetic prostheses.
    Type: Application
    Filed: April 11, 2017
    Publication date: October 12, 2017
    Inventors: Guihua Yu, Ye Shi, Xiaopeng Li
  • Publication number: 20170244916
    Abstract: The present disclosure provides a method for generating an HDR image. The method includes: providing an image sensor, in which the image sensor includes a pixel array and a filter array disposed on the pixel array, and each filter unit in the filter array covers a plurality of pixel units in the pixel array so as to constitute a pixel structure unit; and performing an exposure control to pixel units within each pixel structure unit respectively, in which a first part of the pixel units within each pixel structure unit are exposed for a first exposure time, a second part of the pixel units within the pixel structure unit are exposed for a second exposure time, and the first exposure time is greater than the second exposure time.
    Type: Application
    Filed: May 10, 2017
    Publication date: August 24, 2017
    Inventor: Xiaopeng LI
  • Publication number: 20170218736
    Abstract: A sand control screen pipe includes couplings, movable spacer bushes, an outer movable radial slotted screen pipe, a split supporting ring and an inner axial slotted screen pipe. In downhole sand control construction work, a movable combined sand control pipe of axial and radial slotted screen pipes is required to be aligned with an oil layer position, this sand control screen pipe adopts the outer radial slotted screen pipe and the inner axial slotted screen pipe for blocking sand, and the outer radial slotted screen pipe can carry out limited axial movement along the inner axial slotted screen pipe and free rotational motion around the axial line of the inner axial slotted screen pipe, so that the controlled sand can be effectively prevented from hardening and an oil leakage channel is kept smooth for a long time to improve the production efficiency of an oil well.
    Type: Application
    Filed: October 20, 2014
    Publication date: August 3, 2017
    Inventors: Yonghong LIU, Renjie JI, Baoping CAI, Quansheng ZHANG, Xiaopeng LI, Qingyun LI
  • Patent number: 9712178
    Abstract: A circuit includes a digital converter configured to convert an input signal to an output signal. The digital converter is configured to provide the output signal with at least one of a plurality of different output resolutions during each frame based on a control input. A resolution controller is configured to provide the control input to set the resolution of the digital converter to include at least two of the plurality of different output resolutions during each respective frame, such that an aggregate resolution for the digital converter is maintained below a predetermined threshold over time. The aggregate resolution is based on a ratio of the different output resolutions during each respective frame.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: July 18, 2017
    Assignee: Texas Instruments Incorporated
    Inventors: Hao Li, Thomas R. Neu, Xiaopeng Li
  • Patent number: 9503119
    Abstract: A switched current pipeline analog-to-digital converter (ADC) integrated circuit. The integrated circuit comprises a track and hold circuit (T/H) and a residue amplifier. The T/H is configured to generate a differential output of the T/H based on an analog input. The residue amplifier is coupled to the T/H, configured to capture a sample of a common mode signal of the differential output of the T/H during a periodic pulse interval, wherein the pulse interval is less than half of the time duration of the period of the pulse, configured to generate a corrected input common mode feedback signal based in part on the sample of the common mode signal of the differential output of the T/H, and configured to generate a differential output of the residue amplifier based on the differential output of the T/H and based on the corrected input common mode feedback signal.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: November 22, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jesse Coulon, Manar El-Chammas, Xiaopeng Li, Shigenobu Kimura
  • Publication number: 20160120934
    Abstract: The present invention provides a pharmaceutical composition comprising Protein Kinase C Zeta (PKC-?) inhibitor and therapeutic methods for preventing or treating a pathological condition or symptom or for inducing proliferation of lung progenitor cells in a mammal by administering the PKC-? inhibitor.
    Type: Application
    Filed: October 28, 2015
    Publication date: May 5, 2016
    Applicant: UNIVERSITY OF IOWA RESEARCH FOUNDATION
    Inventors: Alejandro P. Comellas Freymond, Xiaopeng Li, Joseph Zabner, Luis Guillermo Vargas Buonfiglio
  • Publication number: 20150349795
    Abstract: A switched current pipeline analog-to-digital converter (ADC) integrated circuit. The integrated circuit comprises a track and hold circuit (T/H) and a residue amplifier. The T/H is configured to generate a differential output of the T/H based on an analog input. The residue amplifier is coupled to the T/H, configured to capture a sample of a common mode signal of the differential output of the T/H during a periodic pulse interval, wherein the pulse interval is less than half of the time duration of the period of the pulse, configured to generate a corrected input common mode feedback signal based in part on the sample of the common mode signal of the differential output of the T/H, and configured to generate a differential output of the residue amplifier based on the differential output of the T/H and based on the corrected input common mode feedback signal.
    Type: Application
    Filed: May 18, 2015
    Publication date: December 3, 2015
    Inventors: Jesse COULON, Manar EL-CHAMMAS, Xiaopeng LI, Shigenobu KIMURA
  • Publication number: 20140328353
    Abstract: A circuit includes a digital converter configured to convert an input signal to an output signal. The digital converter is configured to provide the output signal with at least one of a plurality of different output resolutions during each frame based on a control input. A resolution controller is configured to provide the control input to set the resolution of the digital converter to include at least two of the plurality of different output resolutions during each respective frame, such that an aggregate resolution for the digital converter is maintained below a predetermined threshold over time. The aggregate resolution is based on a ratio of the different output resolutions during each respective frame.
    Type: Application
    Filed: May 2, 2014
    Publication date: November 6, 2014
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: HAO LI, THOMAS R. NEU, XIAOPENG LI
  • Patent number: 7502076
    Abstract: A method and apparatus for a digital video display. A digital display device receives an analog signal representing an image formed of pixels in video lines and a signal containing a synchronization waveform for the image. An analog-to-digital converter (ADC) receives the analog signal and converts it to a sampled digital waveform. A phase-locked loop including a programmable frequency divider controls the sampling time for the ADC. The programmable frequency divider is controlled by a dividing-ratio algorithm that selects a dividing ratio, measures the number of pixels in a video line using the dividing ratio, and recomputes the dividing ratio by multiplying the selected dividing ratio by the expected number of pixels in a video line and dividing by the measured number of pixels. The sampling phase for the ADC is selected by a sampling-phase control algorithm that minimizes a function representative of the flatness of the sampled digital waveform.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: March 10, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: Liming Xiu, Wen Li, Xiaopeng Li
  • Patent number: 7262531
    Abstract: The present invention relates to a magnetic suspension bearing supported by magnetic force, which comprises one or more magnets fixed on a shaft directly or indirectly which can rotate with said shaft, and matching magnets provided in a certain space, wherein the magnetic polarity and magnitude of magnetic force of the matching magnets match with the magnetic polarity and magnitude of magnetic force of said one or more magnets to achieve the full suspension rotation of said shaft, and said magnets and/or matching magnets are permanent magnets. The present invention is of simple design and large power, with many other advantages such as great rigidity and great load-bearing capability and widely use in various fields.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: August 28, 2007
    Inventors: Guokun Li, Xiaopeng Li, Xiaobo Li
  • Publication number: 20060256119
    Abstract: A method and apparatus for a digital video display. A digital display device receives an analog signal representing an image formed of pixels in video lines and a signal containing a synchronization waveform for the image. An analog-to-digital converter (ADC) receives the analog signal and converts it to a sampled digital waveform. A phase-locked loop including a programmable frequency divider controls the sampling time for the ADC. The programmable frequency divider is controlled by a dividing-ratio algorithm that selects a dividing ratio, measures the number of pixels in a video line using the dividing ratio, and recomputes the dividing ratio by multiplying the selected dividing ratio by the expected number of pixels in a video line and dividing by the measured number of pixels. The sampling phase for the ADC is selected by a sampling-phase control algorithm that minimizes a function representative of the flatness of the sampled digital waveform.
    Type: Application
    Filed: July 21, 2005
    Publication date: November 16, 2006
    Inventors: Liming Xiu, Wen Li, Xiaopeng Li
  • Patent number: 7116261
    Abstract: To make use of its full input voltage operating range, an analog-to-digital converter is configured with a switched-capacitor circuit to produce a digital output signal from an analog input signal that lies within a range of input signal voltage. The analog-to-digital converter is configured with an amplifier with a digitally programmable gain and a voltage generator with a digitally controlled output voltage. The voltage generator is coupled through a buffer to the amplifier input and generates an output voltage inversely proportional to the amplifier gain. The amplifier gain and the voltage generator output voltage are controllable with the same digital control signal. The combination of the amplifier and the voltage generator can be configured to produce a voltage for the analog-to-digital converter that lies in a prescribed voltage range, avoiding the need to generate substantial current from the voltage generator for a switched-capacitor circuit.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: October 3, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Xiaopeng Li, Haydar Bilhan
  • Patent number: 6778113
    Abstract: A shunt-shunt feedback current to voltage converter (60) including a compensating current (22) provided to the output of the amplifier (12) which mirrors the input current (14) advantageously removing the loading effects of the feedback resistor (Rf) to the amplifier (12). A current steering DAC (40) is utilized in conjunction with a plurality of polarity control switches (62) to provide either a source current or a sink current to the amplifier input, and a complementary sink current or source current, respectively, to the output of the amplifier such that the amplifier (12) does not provide any current to the feedback resistor. Thus, DC gain of the amplifier is maintained. The current steering DAC (40) provides a matched source current and sink current to achieve this architecture.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: August 17, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Gonggui Xu, Haydar Bilhan, Huimin Xia, Feng Ying, Xiaopeng Li
  • Publication number: 20040113502
    Abstract: The present invention relates to a magnetic suspension bearing supported by magnetic force, which comprises one or more magnets fixed on a shaft directly or indirectly which can rotate with said shaft, and matching magnets provided in a certain space, wherein the magnetic polarity and magnitude of magnetic force of the matching magnets match with the magnetic polarity and magnitude of magnetic force of said one or more magnets to achieve the full suspension rotation of said shaft, and said magnets and/or matching magnets are permanent magnets. The present invention is of simple design and large power.
    Type: Application
    Filed: October 2, 2003
    Publication date: June 17, 2004
    Inventors: Guo-Kun Li, Xiaopeng Li, Xiaobo Li
  • Patent number: D531475
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: November 7, 2006
    Inventor: Xiaopeng Li