Patents by Inventor Douglas R. Castor

Douglas R. Castor 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: 20090203409
    Abstract: A method and apparatus for optimization of a modem for high data rate applications comprise a plurality of hardware accelerators which are configured to perform data processing functions, wherein the hardware accelerators are parameterized, a processor is configured to selectively activate accelerators according to the desired function to conserve power requirements and a shared memory configured for communication between the plurality of hardware accelerators.
    Type: Application
    Filed: October 20, 2008
    Publication date: August 13, 2009
    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Douglas R. Castor, Edward L. Hepler, Michael F. Starsinic, William C. Hackett, David S. Bass, Joseph W. Gredone, Paul L. Russell, Richard P. Gorman
  • Publication number: 20090158008
    Abstract: A physical layer transport composite processing system used in a wireless communication system. A plurality of interconnected processing blocks are provided. The blocks are interconnected by a read data bus, a write data bus and a control bus. The blocks include a transport channel processing block, a composite channel processing block and a chip rate processing block. At least two of the blocks are capable of processing data for a plurality of wireless formats. A first set of parameters is programmed into the blocks for a particular wireless mode. The blocks are operated to process data in the particular wireless format mode.
    Type: Application
    Filed: February 23, 2009
    Publication date: June 18, 2009
    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Edward L. Hepler, Michael F. Starsinic, David S. Bass, Binish Desai, Alan M. Levi, George W. McClellan, Douglas R. Castor
  • Publication number: 20090122764
    Abstract: The invention includes various embodiments for use in physical layer processing. One embodiment determines the address mapping of bits in the physical channel buffer from the address of bits in the first interleaver buffer. The physical channel buffer addresses are determined corresponding to addresses of the bits after rate matching, bit scrambling, second interleaving and physical channel mapping. The bits are directly read from the first interleaver buffer and written to the physical channel buffer using the determined physical channel buffer addresses. Another embodiment determines the address mapping of bits in the first interleaver buffer from the address of bits in the physical channel buffer. The first interleaver buffer addresses are determined corresponding to addresses of the bits after reverse rate matching, reverse bit scrambling, reverse second interleaving and reverse physical channel mapping.
    Type: Application
    Filed: January 15, 2009
    Publication date: May 14, 2009
    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Douglas R. Castor, George W. McClellan, Joseph T. Morabito
  • Patent number: 7515564
    Abstract: The invention includes various embodiments for use in physical layer processing. One embodiment determines the address mapping of bits in the physical channel buffer from the address of bits in the first interleaver buffer. The physical channel buffer addresses are determined corresponding to addresses of the bits after rate matching, bit scrambling, second interleaving and physical channel mapping. The bits are directly read from the first interleaver buffer and written to the physical channel buffer using the determined physical channel buffer addresses. Another embodiment determines the address mapping of bits in the first interleaver buffer from the address of bits in the physical channel buffer. The first interleaver buffer addresses are determined corresponding to addresses of the bits after reverse rate matching, reverse bit scrambling, reverse second interleaving and reverse physical channel mapping.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: April 7, 2009
    Assignee: InterDigital Technology Corporation
    Inventors: Douglas R. Castor, George W. McClellan, Joseph T. Morabito
  • Publication number: 20090075598
    Abstract: A method and apparatus for adaptively biasing a channel quality indicator (CQI) used for setting a configuration of communication between a transmitter and a receiver in a wireless communication system. The receiver sends a CQI and positive acknowledgement (ACK)/negative acknowledgement (NACK) messages to the transmitter. The ACK/NACK messages indicate the absence or presence of error, respectively, in a transmitted data packet. The CQI is derived from the signal-to-interference ratio (SIR) and the ACK/NACK messages. The transmitter calculates the block error rate (BLER) of the transmitted data packets based upon the ACK/NACK messages sent from the receiver. The transmitter compares the BLER of the transmitted data packets to a target BLER and biases the CQI based on the comparison in order to achieve the target BLER.
    Type: Application
    Filed: November 21, 2008
    Publication date: March 19, 2009
    Inventors: Philip J. Pietraski, Gregory S. Sternberg, Douglas R. Castor
  • Patent number: 7496074
    Abstract: A physical layer transport composite processing system used in a wireless communication system. A plurality of interconnected processing blocks are provided. The blocks are interconnected by a read data bus, a write data bus and a control bus. The blocks include a transport channel processing block, a composite channel processing block and a chip rate processing block. At least two of the blocks are capable of processing data for a plurality of wireless formats. A first set of parameters is programmed into the blocks for a particular wireless mode. The blocks are operated to process data in the particular wireless format mode.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: February 24, 2009
    Assignee: InterDigital Technology Corporation
    Inventors: Edward L. Hepler, Michael F. Starsinic, David S. Bass, Binish Desai, Alan M. Levi, George W. McClellan, Douglas R. Castor
  • Patent number: 7492722
    Abstract: A method and apparatus for adaptively biasing a channel quality indicator (CQI) used for setting a configuration of communication between a transmitter and a receiver in a wireless communication system. The receiver sends a CQI and positive acknowledgement (ACK)/negative acknowledgement (NACK) messages to the transmitter. The ACK/NACK messages indicate the absence or presence of error, respectively, in a transmitted data packet. The CQI is derived from the signal-to-interference ratio (SIR) and the ACK/NACK messages. The transmitter calculates the block error rate (BLER) of the transmitted data packets based upon the ACK/NACK messages sent from the receiver. The transmitter compares the BLER of the transmitted data packets to a target BLER and biases the CQI based on the comparison in order to achieve the target BLER.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: February 17, 2009
    Assignee: InterDigital Technology Corporation
    Inventors: Philip J. Pietraski, Gregory S. Sternberg, Douglas R. Castor
  • Publication number: 20040014447
    Abstract: A physical layer transport composite processing system used in a wireless communication system. A plurality of interconnected processing blocks are provided. The blocks are interconnected by a read data bus, a write data bus and a control bus. The blocks include a transport channel processing block, a composite channel processing block and a chip rate processing block. At least two of the blocks are capable of processing data for a plurality of wireless formats. A first set of parameters is programmed into the blocks for a particular wireless mode. The blocks are operated to process data in the particular wireless format mode.
    Type: Application
    Filed: April 15, 2003
    Publication date: January 22, 2004
    Applicant: InterDigital Technology Corporation
    Inventors: Edward L. Hepler, Michael F. Starsinic, David S. Bass, Binish Desai, Alan M. Levi, George W. McClellan, Douglas R. Castor
  • Publication number: 20030099217
    Abstract: The invention includes various embodiments for use in physical layer processing. One embodiment determines the address mapping of bits in the physical channel buffer from the address of bits in the first interleaver buffer. The physical channel buffer addresses are determined corresponding to addresses of the bits after rate matching, bit scrambling, second interleaving and physical channel mapping. The bits are directly read from the first interleaver buffer and written to the physical channel buffer using the determined physical channel buffer addresses. Another embodiment determines the address mapping of bits in the first interleaver buffer from the address of bits in the physical channel buffer. The first interleaver buffer addresses are determined corresponding to addresses of the bits after reverse rate matching, reverse bit scrambling, reverse second interleaving and reverse physical channel mapping.
    Type: Application
    Filed: April 16, 2002
    Publication date: May 29, 2003
    Applicant: InterDigital Technology Corporation
    Inventors: Douglas R. Castor, George W. McClellan, Joseph T. Morabito