Patents by Inventor Stephen R. Korfhage

Stephen R. Korfhage 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).

  • Low-cost two-stage receiver system for DS-CDMA
    Patent number: 7050483
    Abstract: A method and apparatus for receiving and processing a DS-CDMA signal in accordance with a two-stage process. The first stage comprises signal detection and employs a correlation between the sampled incoming waveform and a pseudo-noise code sequence. This stage is performed in real-time. Once a signal has been detected, a burst of the sampled incoming waveform is collected and then post-processed to recover the incoming information. The method may be implemented at low-cost on a general-purpose digital signal processor. The invention is especially suitable for DS CDMA location systems, where low-cost and low power consumption are desirable.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: May 23, 2006
    Assignee: Motorola, Inc.
    Inventors: Qicai Shi, Stephen R. Korfhage
  • Low -cost two-stage receiver system for DS-CDMA
    Publication number: 20030112854
    Abstract: A method and apparatus for receiving and processing a DS-CDMA signal in accordance with a two-stage process. The first stage comprises signal detection and employs a correlation between the sampled incoming waveform and a pseudo-noise code sequence. This stage is performed in real-time. Once a signal has been detected, a burst of the sampled incoming waveform is collected and then post-processed to recover the incoming information. The method may be implemented at low-cost on a general-purpose digital signal processor. The invention is especially suitable for DS CDMA location systems, where low-cost and low power consumption are desirable.
    Type: Application
    Filed: December 13, 2001
    Publication date: June 19, 2003
    Inventors: Qicai Shi, Stephen R. Korfhage