Patents by Inventor Shengcai Liu

Shengcai Liu 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: 20230156312
    Abstract: An electronic device includes a movable assembly. An optical proximity sensor is disposed on the movable assembly. The movable assembly may be spaced from a fixed assembly on the electronic device, and the movable assembly can move on a plane that is disposed in parallel relative to the fixed assembly. A light intensity of light that is from the optical proximity sensor and that is reflected by the fixed assembly may reflect a position of the movable assembly relative to the fixed assembly. Whether the movable assembly moves to a specified target position may be determined based on the light intensity of the light that is reflected by the fixed assembly and that is detected by the optical proximity sensor.
    Type: Application
    Filed: March 12, 2021
    Publication date: May 18, 2023
    Inventors: Shengcai Liu, Shuqiang Gong
  • Patent number: 10742057
    Abstract: A self-loop detection method for a charging device includes switching a positive signal cable Do and a negative signal cable Do from a connected state to a disconnected state; and detecting whether a positive signal cable Di and a negative signal cable Di are switched from a connected state to a disconnected state; and if yes, determining that a self-loop exists in the charging device.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: August 11, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wanbao Peng, Fengxin Wang, Lixiang Zheng, Shengcai Liu
  • Patent number: 10411464
    Abstract: A current-limiting protection circuit and an electronic device are provided. The current-limiting protection circuit includes a power supply chip and a current-limiting circuit that is electrically connected to the power supply chip. The current-limiting circuit is configured to detect a charging current, and output a feedback voltage to the power supply chip. The power supply chip is configured to when the feedback voltage is greater than a second reference voltage, reduce an output voltage until the charging current reaches a preset value, where the second reference voltage is a preset internal voltage of the power supply chip.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: September 10, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Shengcai Liu
  • Publication number: 20180054067
    Abstract: A self-loop detection method for a charging device includes switching a positive signal cable Do and a negative signal cable Do from a connected state to a disconnected state; and detecting whether a positive signal cable Di and a negative signal cable Di are switched from a connected state to a disconnected state; and if yes, determining that a self-loop exists in the charging device.
    Type: Application
    Filed: March 10, 2015
    Publication date: February 22, 2018
    Inventors: Wanbao Peng, Fengxin Wang, Lixiang Zheng, Shengcai Liu
  • Publication number: 20180013283
    Abstract: A current-limiting protection circuit and an electronic device are provided. The current-limiting protection circuit includes a power supply chip and a current-limiting circuit that is electrically connected to the power supply chip. The current-limiting circuit is configured to detect a charging current, and output a feedback voltage to the power supply chip. The power supply chip is configured to when the feedback voltage is greater than a second reference voltage, reduce an output voltage until the charging current reaches a preset value, where the second reference voltage is a preset internal voltage of the power supply chip.
    Type: Application
    Filed: January 22, 2015
    Publication date: January 11, 2018
    Inventor: Shengcai Liu
  • Publication number: 20170171622
    Abstract: The present disclosure relates to the communications field, and disclose a method based on a video content recommendation and an electronic device. The method comprises: acquiring displayed content in the video and determining whether target content exists in the displayed content; acquiring a recommendation related to the target content; and providing the recommendation related to the target content in a play interface of the video when the video is played and shows the target content. By means of the embodiments of the present disclosure, when a video is played and shows target content, a recommendation related to the target content is provided in a play interface of the video, which can purposively recommend target content, improve a success rate of recommendation, and reduce popularization cost of the target content.
    Type: Application
    Filed: August 19, 2016
    Publication date: June 15, 2017
    Applicants: LE HOLDINGS (BEIJING) CO., LTD., LE SHI INTERNET INFORMATION & TECHNOLOGY CORP., BEIJING
    Inventor: Shengcai LIU
  • Publication number: 20170171333
    Abstract: Embodiments of the present disclosure relate to the communications field, and disclose an information pushing method and electronic device for information pushing. The method for information pushing includes: pushing information related to a scheduled event to a user; receiving feedback on the information from the user; and sending, according to the feedback from the user, a notification to the user within a predetermined time before the event occurs. By means of the embodiments of the present disclosure, the feedback on the information from the user can reflect whether the user is interested in a scheduled event such as a film, and thereby the user can be reminded again in a notification manner within a predetermined time before a release date of the film.
    Type: Application
    Filed: August 19, 2016
    Publication date: June 15, 2017
    Applicants: LE HOLDINGS (BEIJING) CO., LTD., LE SHI INTERNET INFORMATION & TECHNOLOGY CORP., BEIJING
    Inventor: Shengcai LIU
  • Patent number: 9128691
    Abstract: A method for selecting an internal circuit according to a USB interface status includes: connecting a first pin of a USB interface of a terminal to a power supply through a pull-up resistor, where the first pin is a D? or D+ pin; when detecting that an external USB device is inserted into the USB interface, detecting whether the level status of the first pin is high or low; if the level status is low, connecting the D? and D+ pins to corresponding pins of a USB data communication module of the terminal and controlling charging of the terminal according to a first policy; if the level status is high, determining whether the level statuses of the D? and D+ pins are consistent, and if consistent, controlling charging of the terminal according to a second policy; if inconsistent, controlling charging of the terminal according to a third policy.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: September 8, 2015
    Assignee: Huawei Device Co., Ltd.
    Inventor: Shengcai Liu