Patents by Inventor Li-Jieu Hsu

Li-Jieu Hsu 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: 8175824
    Abstract: A circuit testing apparatus for testing capacitance of a capacitor of a device under test is provided. The circuit testing apparatus includes a measuring module, a first converting module, a processing module and a second converting module. The measuring module provides a testing signal, and determines the capacitance of the capacitor according to a signal measuring result of the testing signal. The first converting module is coupled to the measuring module for converting the testing signal to generate a testing input signal. The processing module is coupled to the first converting module and the device under test for transmitting the testing input signal to the capacitor, and amplifies an output signal generated by the capacitor to generate an amplified signal. The second converting module is coupled to the processing module and the measuring module for converting the amplified signal to generate the signal measuring result.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: May 8, 2012
    Assignee: Princeton Technology Corporation
    Inventors: Cheng-Yung Teng, Li-Jieu Hsu
  • Patent number: 7908108
    Abstract: A circuit testing apparatus for testing a device under test is disclosed. The device under test comprises a first output end and second output end for generating a first output signal and a second output signal, respectively. The circuit testing apparatus determines a test result for the device under test according to the first output signal and the second output signal.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: March 15, 2011
    Assignee: Princeton Technology Corporation
    Inventors: Cheng-Yung Teng, Li-Jieu Hsu
  • Patent number: 7830163
    Abstract: The invention discloses a testing circuit board for placing a device under test and further testing the device under test according to a plurality of testing signals generated by a tester. The testing circuit board includes a circuit board and a plurality of sets of sockets. The circuit board includes a plurality of connecting holes. The plurality of sets of sockets are located on a plurality of connecting holes and electrically connects to the device under test via a plurality of connecting interfaces for transferring the plurality of testing signals to test the device under test.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: November 9, 2010
    Assignee: Princeton Technology Corporation
    Inventors: Cheng-Yung Teng, Li-Jieu Hsu, Wei-Fen Chiang, Yung-Yu Wu, Hung-Wei Chen, Huei-Huang Chen
  • Patent number: 7706999
    Abstract: The invention discloses a circuit testing apparatus for testing a device under test. The circuit testing apparatus includes a precision measurement unit, a signal transformation module, and a microprocessor. The precision measurement unit is coupled to the device under test for providing a testing signal and receiving a measurement signal generated according to the testing signal. The signal transformation module is coupled to the precision measurement unit for receiving the measurement signal and transforming the measurement signal to a signal measurement result according to a predetermined manner. The microprocessor is coupled to the precision measurement unit and the signal transformation module for examining the signal measurement result to determine a test result for the device under test.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: April 27, 2010
    Assignee: Princeton Technology Corporation
    Inventors: Cheng-Yung Teng, Li-Jieu Hsu, Jie-Wei Huang, Huei-Huang Chen
  • Publication number: 20090326844
    Abstract: A circuit testing apparatus for testing capacitance of a capacitor of a device under test is provided. The circuit testing apparatus includes a measuring module, a first converting module, a processing module and a second converting module. The measuring module provides a testing signal, and determines the capacitance of the capacitor according to a signal measuring result of the testing signal. The first converting module is coupled to the measuring module for converting the testing signal to generate a testing input signal. The processing module is coupled to the first converting module and the device under test for transmitting the testing input signal to the capacitor, and amplifies an output signal generated by the capacitor to generate an amplified signal. The second converting module is coupled to the processing module and the measuring module for converting the amplified signal to generate the signal measuring result.
    Type: Application
    Filed: May 18, 2009
    Publication date: December 31, 2009
    Inventors: Cheng-Yung Teng, Li-Jieu Hsu
  • Publication number: 20090281744
    Abstract: A testing device for testing a device under test is disclosed. The testing device includes a microprocessor, a measuring module and a computing module. The microprocessor provides a testing signal to the device under test and determines a testing result for the device under test according to at least one signal measurement result. The device under test further generates at least one measuring signal after receiving the testing signal. The measuring module is coupled to the device under test, and measures the at least one measuring signal and generates at least one voltage measurement result and at least one period measurement result. The computing module obtains the at least one voltage measurement result and the at least one period measurement result according to a predetermined manner and generates the at least one signal measurement result.
    Type: Application
    Filed: April 27, 2009
    Publication date: November 12, 2009
    Inventors: Cheng-Yung Teng, Li-Jieu Hsu
  • Publication number: 20090254296
    Abstract: A circuit testing apparatus for testing a device under test is disclosed. The device under test comprises a first output end and second output end for generating a first output signal and a second output signal, respectively. The circuit testing apparatus determines a test result for the device under test according to the first output signal and the second output signal.
    Type: Application
    Filed: May 30, 2008
    Publication date: October 8, 2009
    Inventors: Cheng-Yung Teng, Li-Jieu Hsu
  • Publication number: 20090140877
    Abstract: A remote controller including buttons, an input module including resistors and switches, and a control module including a determining module, a storage module, and a modulation module. Each resistor is coupled to a power source and provides a current path corresponding to one button. The switches are coupled to the resistors. The corresponding switch provides the corresponding current path when one button is pushed. The input module accords with the corresponding current path to generate an input signal. The control module generates an output signal according to the input signal. When the input module transmits the input signal, the determining module obtains the pushed button according to the input signal and generates a determining signal according to the obtained result. The storage module generates a control signal according to the determining signal. The modulation module modulates the control signal to generate the output signal.
    Type: Application
    Filed: April 9, 2008
    Publication date: June 4, 2009
    Inventors: Cheng-Yung TENG, Li-Jieu Hsu
  • Publication number: 20090108859
    Abstract: The invention discloses a testing circuit board for placing a device under test and further testing the device under test according to a plurality of testing signals generated by a tester. The testing circuit board includes a circuit board and a plurality of sets of sockets. The circuit board includes a plurality of connecting holes. The plurality of sets of sockets are located on a plurality of connecting holes and electrically connects to the device under test via a plurality of connecting interfaces for transferring the plurality of testing signals to test the device under test.
    Type: Application
    Filed: October 7, 2008
    Publication date: April 30, 2009
    Inventors: Cheng-Yung TENG, Li-Jieu HSU, Wei-Fen CHIANG, Yung-Yu WU, Hung-Wei CHEN, Huei-Huang CHEN
  • Publication number: 20080243409
    Abstract: The invention discloses a circuit testing apparatus for testing a device under test. The circuit testing apparatus includes a precision measurement unit, a signal transformation module, and a microprocessor. The precision measurement unit is coupled to the device under test for providing a testing signal and receiving a measurement signal generated according to the testing signal. The signal transformation module is coupled to the precision measurement unit for receiving the measurement signal and transforming the measurement signal to a signal measurement result according to a predetermined manner. The microprocessor is coupled to the precision measurement unit and the signal transformation module for examining the signal measurement result to determine a test result for the device under test.
    Type: Application
    Filed: May 31, 2007
    Publication date: October 2, 2008
    Inventors: Cheng-Yung Teng, Li-Jieu Hsu, Jie-Wei Huang, Huei-Huang Chen
  • Publication number: 20070024314
    Abstract: The present invention relates to a test system, and in particular relates to a test system capable of testing a plurality of chips simultaneously. The test system comprises a single-chip tester and a handler. The single-chip tester further comprises a pattern memory and a micro-processor. The pattern memory comprises a plurality of pattern units for respectively performing a function pattern test on the plurality of chips and generating a test result mapping to the plurality of chips. The micro-processor performs various tests and generating an interface control signal according to the test result. The handler initiates the micro-processor for performing various tests and receives the interface control signal to finish testing the plurality of chips. The pluralities of chips are set to the handler.
    Type: Application
    Filed: July 31, 2006
    Publication date: February 1, 2007
    Inventors: Cheng-Yung Teng, Yi-Chang Hsu, Li-Jieu Hsu