Patents by Inventor Chih Yen Chang

Chih Yen Chang 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: 20100079257
    Abstract: An item positioning system is provided. The item positioning system comprises a plurality of tag readers and a control device. The plurality of tag readers generate access signals respectively and receive a response signal from a target tag. The control device adjusts transmitting power of the access signals of the tag readers, and determines a position of the target item according to whether the tag readers receive the response signal.
    Type: Application
    Filed: August 25, 2009
    Publication date: April 1, 2010
    Applicant: MSTAR SEMICONDUCTOR, INC.
    Inventor: Chih Yen Chang
  • Publication number: 20100052696
    Abstract: A chip testing apparatus and a chip testing method are provided. The chip testing apparatus includes a command generating module, a transceiving module and a control module. When the command generating module generates a first test command, the transceiving module transmits the first test command to a radio frequency identification (RFID) chip and receives a target test result from the RFID chip. The control module determines whether the target test result complies with a reference test result. When the determination result of the control module is no, the control module controls the command generating module to generate a second test command for retesting the RFID chip.
    Type: Application
    Filed: August 26, 2009
    Publication date: March 4, 2010
    Applicant: MStar Semiconductor, Inc.
    Inventors: Chih-Hua Huang, Chih Yen Chang
  • Publication number: 20090278667
    Abstract: A method and apparatus for loading and executing program code at a micro-processor are disclosed. In this method, a monitoring procedure is performed to monitor whether the micro-processor receives a loading request corresponding to a target program code. If the loading request is received, the target program code is loaded from an external memory into an internal memory of the micro-processor. The micro-processor is then rebooted to enter a first mode in which the target program code in the internal memory is to be executed.
    Type: Application
    Filed: April 27, 2009
    Publication date: November 12, 2009
    Applicant: MStar semiconductor, Inc.
    Inventors: CHIH-HUA HUANG, CHIH YEN CHANG