Patents by Inventor Jack Lieng

Jack Lieng 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).

  • Automated power control to optimize power consumption and improved wireless connection
    Patent number: 8229370
    Abstract: A method for automatically adjusting signal output power of a ZigBee wireless module. The method includes sending a signal with an output power from a transmitter of a ZigBee module to a receiver. The ZigBee module includes a power amplifier/low noise amplifier (PA/LNA) circuit. The output power can be adjusted between a minimum level and a maximum level. Additionally, the method includes generating a Link Quality Indicator (LQI) by the receiver based on the signal strength and returning the LQI to the ZigBee module. If the LQI is not within a predetermined range between a maximum value and a minimum value, the method includes adjusting the output power for sending next signal. If the output power from the transmitter has reached to the minimum level or the maximum level, the method further includes adjusting the PA/LNA circuit of the ZigBee module for maintaining the LQI within the predetermined range.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: July 24, 2012
    Assignee: Minebea Co., Ltd.
    Inventors: Mario Wu, Makoto Nakayama, John Guo, Jack Lieng, Walter Lee
  • AUTOMATED POWER CONTROL TO OPTIMIZE POWER CONSUMPTION AND IMPROVED WIRELESS CONNECTION
    Publication number: 20100233975
    Abstract: A method for automatically adjusting signal output power of a ZigBee wireless module. The method includes sending a signal with an output power from a transmitter of a ZigBee module to a receiver. The ZigBee module includes a power amplifier/low noise amplifier (PA/LNA) circuit. The output power can be adjusted between a minimum level and a maximum level. Additionally, the method includes generating a Link Quality Indicator (LQI) by the receiver based on the signal strength and returning the LQI to the ZigBee module. If the LQI is not within a predetermined range between a maximum value and a minimum value, the method includes adjusting the output power for sending next signal. If the output power from the transmitter has reached to the minimum level or the maximum level, the method further includes adjusting the PA/LNA circuit of the ZigBee module for maintaining the LQI within the predetermined range.
    Type: Application
    Filed: March 10, 2009
    Publication date: September 16, 2010
    Applicant: Minebea Co., Ltd.
    Inventors: Mario Wu, Makoto Nakayama, John Guo, Jack Lieng, Walter Lee