Patents by Inventor Christopher D. Palm

Christopher D. Palm 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).

  • Walsh code allocation/de-allocation system
    Patent number: 7012886
    Abstract: A method of allocating CDMA codes from a set of the same is provided for use in connection with a wireless network. The method includes, after identifying a desired size of the code to be allocated, determining if there exists a code of the desired size whose sibling is unavailable. If such a code is found, then it is allocated. Otherwise, it is determined if there exists a code of smaller than the desired size whose sibling is unavailable. When such a code (i.e., a code of smaller than the desired size whose sibling is unavailable) is found, a descendant thereof which has the desired size is allocated.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: March 14, 2006
    Assignee: Lucent Technologies Inc.
    Inventors: Steven K. Meier, Christopher D. Palm, Steven M. Welsh, John K. Burgess
  • Automatic verification of Walsh code orthogonality
    Patent number: 7002903
    Abstract: A method of verifying that a CDMA code allocator maintains mutual orthogonality between all concurrently busy codes includes the steps of identifying a code being allocated by the allocator, and determining if the identified code is busy. It is also determined if any ancestral parent of the identified code is busy, and if any descendant of the identified code is busy. If the identified code, one of the identified code's ancestral parents, or one of the identified code's descendants is determined to be busy, then an error in allocator operation is indicated.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: February 21, 2006
    Assignee: Lucent Technologies Inc.
    Inventors: Satish Chandra, Patrice I. Godefroid, Christopher D. Palm, Steven M. Welsh
  • Automatic verification of walsh code orthogonality
    Publication number: 20020176384
    Abstract: A method of verifying that a CDMA code allocator maintains mutual orthogonality between all concurrently busy codes includes the steps of identifying a code being allocated by the allocator, and determining if the identified code is busy. It is also determined if any ancestral parent of the identified code is busy, and if any descendant of the identified code is busy. If the identified code, one of the identified code's ancestral parents, or one of the identified code's descendants is determined to be busy, then an error in allocator operation is indicated.
    Type: Application
    Filed: May 23, 2001
    Publication date: November 28, 2002
    Inventors: Satish Chandra, Patrice I. Godefroid, Christopher D. Palm, Steven M. Welsh
  • Walsh code allocation/de-allocation system
    Publication number: 20020172168
    Abstract: A method of allocating CDMA codes from a set of the same is provided for use in connection with a wireless network. The method includes, after identifying a desired size of the code to be allocated, determining if there exists a code of the desired size whose sibling is unavailable. If such a code is found, then it is allocated. Otherwise, it is determined if there exists a code of smaller than the desired size whose sibling is unavailable. When such a code (i.e., a code of smaller than the desired size whose sibling is unavailable) is found, a descendant thereof which has the desired size is allocated.
    Type: Application
    Filed: May 16, 2001
    Publication date: November 21, 2002
    Inventors: Steven K. Meier, Christopher D. Palm, Steven M. Welsh, John K. Burgess