Patents by Inventor Wei-Tun Peng

Wei-Tun Peng 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: 20120114020
    Abstract: The present invention is directed to a de-spreading method for a noncoherent receiver including: obtaining an output signal from a matched filter of a noncoherent receiver, which is PSK modulated and is at least two times upsampled; performing a noncoherent demodulation step including performing a differential operation on an in-phase and quadrature-phase components of the output signal of the matched filter to obtain a demodulated signal; and performing a de-spreading step on the demodulated signal with a PN table corresponding to the demodulated signal to obtain the de-spreaded data, wherein the PN table corresponding to the demodulated data contains chips which are either logic 1 or logic ?1. A noncoherent receiver is also provided.
    Type: Application
    Filed: November 8, 2010
    Publication date: May 10, 2012
    Inventors: Wei-Tun Peng, Chun-Chin Chen
  • Publication number: 20110292982
    Abstract: Apparatus for positioning and method for the same are disclosed. The apparatus comprises two transceivers and four time-to-digital converters. The time-to-digital converters compare the phase difference between two signals, one is the crystal oscillation and the other is the phase of the IF (intermediate frequency) signal extracted before ADC receiving by the transceiver. The method comprises the following steps: The first place transmits a first wireless signal by a first transceiver to the second place. The second place then responds a second wireless signal by a second transceiver to the first place. The first phase difference at the first place is then measured by the time-to-digital converter. The second phase difference at the second place is also measured. The distance between the first place and the second place is proportional to one half of the sum of first phase difference and the second phase difference.
    Type: Application
    Filed: January 7, 2011
    Publication date: December 1, 2011
    Applicant: UNIBAND ELECTRONIC CORP.
    Inventors: Chun-Chin Chen, Wei-Tun Peng, Li-Rong Wang