Patents by Inventor Sterling Du

Sterling Du 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: 11073565
    Abstract: A method for calculating a remaining capacity of a battery includes: recording a sleep time of a battery monitor in sleep mode; reading an open circuit voltage measured and stored in sleep mode when the sleep time is greater than a preset time period and determining a first remaining capacity ratio based on the open circuit voltage; calculating charges consumed based on a preset current and the sleep time; calculating a second remaining capacity ratio based on charges consumed, a stored first remaining capacity value and a preset total capacity; reading values of battery parameters; determining a third remaining capacity ratio based on the values of battery parameters; and determining a current remaining capacity ratio based on the first remaining capacity ratio, the second remaining capacity ratio and the third remaining capacity ratio.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: July 27, 2021
    Assignee: O2Micro, Inc.
    Inventors: Sterling Du, Yong Song, Yi Yuan, Ruobing Ren
  • Publication number: 20210013813
    Abstract: A controller includes: an input terminal, coupled to a power switch, operable for generating a parameter signal indicating an on/off state of the power switch; a power terminal, coupled to a power source, operable for receiving electric power supplied by the power source to power the controller; an output terminal, coupled to a forwarding module, operable for outputting an indicating signal and a control signal, to enable the forwarding module to read the control signal based on the indicating signal, thus selecting an operating mode of an intelligent device, where both the control signal and the indicating signal are generated by the controller based on the parameter signal.
    Type: Application
    Filed: June 5, 2020
    Publication date: January 14, 2021
    Inventors: Sterling DU, Zhimou REN
  • Publication number: 20200174081
    Abstract: A method for calculating a remaining capacity of a battery includes: recording a sleep time of a battery monitor in sleep mode; reading an open circuit voltage measured and stored in sleep mode when the sleep time is greater than a preset time period and determining a first remaining capacity ratio based on the open circuit voltage; calculating charges consumed based on a preset current and the sleep time; calculating a second remaining capacity ratio based on charges consumed, a stored first remaining capacity value and a preset total capacity; reading values of battery parameters; determining a third remaining capacity ratio based on the values of battery parameters; and determining a current remaining capacity ratio based on the first remaining capacity ratio, the second remaining capacity ratio and the third remaining capacity ratio.
    Type: Application
    Filed: February 20, 2019
    Publication date: June 4, 2020
    Inventors: Sterling DU, Yong SONG, Yi YUAN, Ruobing REN
  • Publication number: 20180145525
    Abstract: A charging management method includes: identifying a type of adapter that is connected to a device including a battery, wherein the type of adapter is one of at least a first type adapter and a second type adapter; if the first type adapter is connected, setting a bypass/LDO (low dropout regulator) module to a first control mode including one of a bypass mode and a hybrid control mode; and if the second type adapter is connected, setting the bypass/LDO module to a second control mode including the hybrid control mode, wherein the bypass/LDO module includes a first transistor and a second transistor.
    Type: Application
    Filed: November 8, 2017
    Publication date: May 24, 2018
    Inventors: Sterling DU, Mingfeng WANG, Xinsheng PENG
  • Patent number: 9298909
    Abstract: A detecting system includes a sense terminal and detecting circuitry coupled to the sense terminal. The sense terminal receives an indicative signal indicative of a supply current of a power source. The detecting circuitry calculates variation in the supply current based on the indicative signal, estimates power consumption of an application program residing on a computer-readable medium according to the variation, and detects whether an abnormal condition occurs by comparing the estimated power consumption with a reference.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: March 29, 2016
    Assignee: O2Micro, Inc.
    Inventors: Shyundii Sterling Du, Zhibin Hua, Jun Li
  • Publication number: 20150191124
    Abstract: A mounting system for mounting a device, e.g., a mobile device, is disclosed. The mounting system includes a housing component and a securing component. The housing component is configured to secure a device. The securing component is coupled to the housing component and is configured to secure the mounting system to a surface. The securing component comprises a lower mounting component configured to secure the housing component to the surface from a bottom side of the housing component. The lower mounting component comprises a first connecting portion and a first attachment device configured to attach to the surface. The first connecting portion is configured to connect the lower mounting component to the bottom side of the housing component.
    Type: Application
    Filed: January 3, 2014
    Publication date: July 9, 2015
    Applicant: O2Micro Inc.
    Inventor: Sterling Du
  • Publication number: 20150091698
    Abstract: An electric vehicle and method for controlling an electric vehicle are disclosed. The electric vehicle includes a battery management system, a wireless communicating module, and a control module. The battery management system is configured for monitoring and managing a battery in the electric vehicle. The wireless communicating module coupled to the battery management system, is configured for establishing a wireless link with a portable device and for receiving an instruction associated with an access credential from the portable device through the wireless link. The control module coupled with the wireless communicating module, is configured for determining whether the access credential provides a right to control the electric vehicle based on the instruction received by the wireless communicating module and for controlling the electric vehicle according to the instruction from the portable device if the access credential provides the right to control the electric vehicle.
    Type: Application
    Filed: December 24, 2013
    Publication date: April 2, 2015
    Applicant: O2Micro Inc.
    Inventor: Sterling Du
  • Publication number: 20140194161
    Abstract: An apparatus includes an operation input unit, a detecting unit, a signal generator, and an interface unit. The operation input unit includes one or more actionable areas or buttons configured to be operated by a user. The detecting unit is coupled to the operation input unit and configured to detect an operation performed by the user in one of the actionable areas to provide a detected operation. The signal generator is coupled to the detecting unit and configured to generate a control signal according to the detected operation. The interface unit is coupled to the signal generator and configured to transfer the control signal to a mobile terminal device that is structurally coupled to the apparatus.
    Type: Application
    Filed: December 24, 2013
    Publication date: July 10, 2014
    Applicant: O2Micro Inc.
    Inventors: Sterling DU, Jing CHEN, Xinsheng PENG, Yating LI, Yang WANG
  • Publication number: 20140193157
    Abstract: A mobile terminal device for controlling an electronic appliance. The mobile terminal device includes a picture acquisition unit, an information identification unit, a control file acquisition unit and an infrared control unit. The picture acquisition unit is configured to acquire pictures of the electronic appliance. The information identification unit is configured to process the pictures and perform character recognition on the pictures to identify device information of the electronic appliance. The control file acquisition unit is configured to acquire a control file from a database of control files according to the device information identified by the information identification unit. The infrared control unit is configured to control an infrared emission unit to emit an infrared control signal according to the control file acquired by the control file acquisition unit.
    Type: Application
    Filed: June 3, 2013
    Publication date: July 10, 2014
    Inventors: Sterling Du, Jing Chen, Weitai Yang, Qiang Guan, Yang Wang, Yating Li
  • Publication number: 20130330084
    Abstract: Methods and systems for remotely controlling a device are provided. A first input is received from a user at a portable device. The first input specifies a first time and a first mode associated with the device. At the first time, a first command is remotely sent from the portable device to the device to activate the device in the first mode.
    Type: Application
    Filed: July 30, 2013
    Publication date: December 12, 2013
    Applicant: O2Micro Inc.
    Inventors: Sterling DU, Qiang Guan, Weitai Yang, Xiliang Luo, Shusheng Ma, Yating Li, Yang Wang, Xinsheng Peng, Jing Chen, Ming Li
  • Publication number: 20130179973
    Abstract: A detecting system includes a sense terminal and detecting circuitry coupled to the sense terminal. The sense terminal receives an indicative signal indicative of a supply current of a power source. The detecting circuitry calculates variation in the supply current based on the indicative signal, estimates power consumption of an application program residing on a computer-readable medium according to the variation, and detects whether an abnormal condition occurs by comparing the estimated power consumption with a reference.
    Type: Application
    Filed: February 9, 2012
    Publication date: July 11, 2013
    Applicant: O2MICRO, INC.
    Inventors: Shyundii Sterling DU, Zhibin HUA, Jun LI
  • Patent number: 8410711
    Abstract: In one embodiment, a driving circuit includes an AC/DC converter which converts an AC voltage to a DC voltage and a DC/DC linear regulator which regulates a current through, e.g., an LED light source, according to a first current reference if a monitoring signal indicating the DC voltage is within a predetermined range, and regulates the current according to a second current reference less than the first current reference if the monitoring signal is beyond the predetermined range. In another embodiment, a controller controlling power to an LED light source turns on a first plurality of LEDs and turns off a second plurality of LEDs if a monitoring signal indicative of a DC voltage received by the LED light source is within a predetermined range, and turns on both first and second plurality of LEDs if the monitoring signal is beyond the predetermined range.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: April 2, 2013
    Assignee: O2Micro Inc
    Inventors: Yung Lin Lin, Sterling Du
  • Patent number: 8378889
    Abstract: A satellite navigation system receiver that includes a counter and a controlling unit is described. The counter may be driven by a reference clock signal having a reference clock frequency. The controlling unit can calculate a correction value indicative of a corrected reference clock frequency by comparing an increment of the counter values during a time period with an increment of the navigation system times during the time period. The controlling unit can generate a calculated navigation system time according to the correction value.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: February 19, 2013
    Assignee: 02MICRO Inc
    Inventors: Xiaoguang Yu, Sterling Du, Haiquan Huang
  • Patent number: 8330608
    Abstract: A method and apparatus are provided to indicate battery capacity status. Different blinking frequencies of an LED correspond to different battery states of charge. Furthermore, the present invention provides a smooth visual brightness change of the LED by providing the appropriate LED current according to human eye characteristics.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: December 11, 2012
    Assignee: O2Micro, Inc.
    Inventors: Sterling Du, Liusheng Liu, Oleksandr Kokorin
  • Publication number: 20120217878
    Abstract: In one embodiment, a driving circuit includes an AC/DC converter which converts an AC voltage to a DC voltage and a DC/DC linear regulator which regulates a current through, e.g., an LED light source, according to a first current reference if a monitoring signal indicating the DC voltage is within a predetermined range, and regulates the current according to a second current reference less than the first current reference if the monitoring signal is beyond the predetermined range. In another embodiment, a controller controlling power to an LED light source turns on a first plurality of LEDs and turns off a second plurality of LEDs if a monitoring signal indicative of a DC voltage received by the LED light source is within a predetermined range, and turns on both first and second plurality of LEDs if the monitoring signal is beyond the predetermined range.
    Type: Application
    Filed: August 26, 2011
    Publication date: August 30, 2012
    Applicant: O2Micro, Inc.
    Inventors: Yung Lin Lin, Sterling Du
  • Publication number: 20120038483
    Abstract: A method and apparatus are provided to indicate battery capacity status. Different blinking frequencies of an LED correspond to different battery states of charge. Furthermore, the present invention provides a smooth visual brightness change of the LED by providing the appropriate LED current according to human eye characteristics.
    Type: Application
    Filed: October 19, 2011
    Publication date: February 16, 2012
    Applicant: O2MICRO, INC.
    Inventors: Sterling DU, Liusheng LIU, Oleksandr KOKORIN
  • Publication number: 20120026342
    Abstract: A system includes a serial input/output (I/O) interface, a second I/O interface and a controller. The controller is coupled to an image sensor by the serial I/O interface and is coupled to a signal processor of a computer by the second I/O interface and can transfer image data input acquired by the image sensor to the signal processor. The signal processor can process the image data input.
    Type: Application
    Filed: July 27, 2010
    Publication date: February 2, 2012
    Inventors: Xiaoguang YU, Yishao Max HUANG, Sterling DU
  • Patent number: 8044815
    Abstract: A method and apparatus are provided to indicate battery capacity status. Different blinking frequencies of an LED correspond to different battery states of charge. Furthermore, the present invention provides a smooth visual brightness change of the LED by providing the appropriate LED current according to human eye characteristics.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: October 25, 2011
    Assignee: O2Micro Inc
    Inventors: Sterling Du, Liusheng Liu, Oleksandr Kokorin
  • Patent number: 8040071
    Abstract: In one embodiment, a driving circuit includes an AC/DC converter which converts an AC voltage to a DC voltage and a DC/DC linear regulator which regulates a current through, e.g., an LED light source, according to a first current reference if a monitoring signal indicating the DC voltage is within a predetermined range, and regulates the current according to a second current reference less than the first current reference if the monitoring signal is beyond the predetermined range. In another embodiment, a controller controlling power to an LED light source turns on a first plurality of LEDs and turns off a second plurality of LEDs if a monitoring signal indicative of a DC voltage received by the LED light source is within a predetermined range, and turns on both first and second plurality of LEDs if the monitoring signal is beyond the predetermined range.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: October 18, 2011
    Assignee: O2Micro, Inc.
    Inventors: Yung Lin Lin, Sterling Du
  • Publication number: 20110109245
    Abstract: In one embodiment, a driving circuit includes an AC/DC converter which converts an AC voltage to a DC voltage and a DC/DC linear regulator which regulates a current through, e.g., an LED light source, according to a first current reference if a monitoring signal indicating the DC voltage is within a predetermined range, and regulates the current according to a second current reference less than the first current reference if the monitoring signal is beyond the predetermined range. In another embodiment, a controller controlling power to an LED light source turns on a first plurality of LEDs and turns off a second plurality of LEDs if a monitoring signal indicative of a DC voltage received by the LED light source is within a predetermined range, and turns on both first and second plurality of LEDs if the monitoring signal is beyond the predetermined range.
    Type: Application
    Filed: December 14, 2010
    Publication date: May 12, 2011
    Inventors: Yung Lin LIN, Sterling DU