Patents by Inventor Sheng-Der Chin

Sheng-Der Chin 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).

  • Method for controlling a mobile communication device to enter a power-saving mode and to recover timing after the mobile communication device leaves the power-saving mode
    Patent number: 7577114
    Abstract: A method for controlling a mobile communication device to enter a power-saving mode and to recover timing after the mobile communication device leaves the power-saving mode. The mobile communication device communicates with a base station through a time division multiple access (TDMA) system so that wireless signals are transmitted via frames.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: August 18, 2009
    Assignee: MediaTek Inc.
    Inventors: Yu-Cheng Hsieh, Sheng-Der Chin
  • Method for switching a time frame based mobile unit to a sleep mode
    Patent number: 7260068
    Abstract: Method for recovering frame timing of a mobile communication device performing a sleep mode. The mobile communication device communicates with a base station through a communication system so that wireless signals are transmitted via frames. The method includes executing a synchronous task for interrupting currently loaded control processes in a real-time operating system and for calculating a predetermined sleep period for the sleep mode, executing the synchronous task for driving the mobile communication device to enter the sleep mode during an actual sleep period, and executing the synchronous task for synchronizing frame timing of the mobile communication with frame timing of the base station according to the actual sleep period.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: August 21, 2007
    Assignee: Mediatek Inc.
    Inventors: Yu-Cheng Hsieh, Sheng-Der Chin
  • METHOD FOR CONTROLLING A MOBILE COMMUNICATION DEVICE TO ENTER A POWER-SAVING MODE AND TO RECOVER TIMING AFTER THE MOBILE COMMUNICATION DEVICE LEAVES THE POWER-SAVING MODE
    Publication number: 20060194624
    Abstract: A method for controlling a mobile communication device to enter a power-saving mode and to recover timing after the mobile communication device leaves the power-saving mode. The mobile communication device communicates with a base station through a time division multiple access (TDMA) system so that wireless signals are transmitted via frames.
    Type: Application
    Filed: March 16, 2006
    Publication date: August 31, 2006
    Inventors: Yu-Cheng Hsieh, Sheng-Der Chin
  • METHOD FOR SWITCHING A TIME FRAME BASED MOBILE UNIT TO A SLEEP MODE
    Publication number: 20040146030
    Abstract: Method for recovering frame timing of a mobile communication device performing a sleep mode. The mobile communication device communicates with a base station through a time division multiple access (TDMA) system so that wireless signals are transmitted via frames. The method includes executing a synchronous task for interrupting currently loaded control processes in a real-time operating system and for calculating a predetermined sleep period for the sleep mode, executing the synchronous task for driving the mobile communication device to enter the sleep mode during an actual sleep period, and executing the synchronous task for synchronizing frame timing of the mobile communication with frame timing of the base station according to the actual sleep period.
    Type: Application
    Filed: January 20, 2004
    Publication date: July 29, 2004
    Inventors: Yu-Cheng Hsieh, Sheng-Der Chin