Patents Examined by Shelton Austin
  • Fast and reliable data carrier detection by a cable modem in a cable television plant
    Patent number: 7469414
    Abstract: Apparatus, methods, and computer program products for detecting or locating a viable data carrier in a downstream channel by a cable modem. Potential channels for data carriers can be eliminated quickly by going through a “screening” process, i.e., the first constellation diagram match, thereby preventing those potential channels from going through a significantly more time-consuming second constellation match. The determination of whether the signal in the potential channel is modulated according to the first particular modulation scheme is done rapidly and only potential channels containing a signal likely to be modulated according to the second particular modulation scheme are examined for the second determination step.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: December 23, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Guenter E. Roeck, Wei-Sing Chen, Charles J. Naegeli
  • Operating cable modems in a low power mode
    Patent number: 7389528
    Abstract: An apparatus may include a receiver configured to receive chunks of data on a downstream channel from a cable modem termination system. The receiver may be further configured to enter a low power state in which the chunks of data cannot be received. Wake up circuitry may be configured to monitor data in the downstream channel for a wake up signal when the receiver is in the low power state.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: June 17, 2008
    Assignee: Juniper Networks, Inc.
    Inventor: Nurettin Burcak Beser
  • Receiving apparatus and receiving method, and storage medium
    Patent number: 7316026
    Abstract: A signal receiving apparatus according to the present invention includes receiving unit for receiving a television broadcast, instruction unit for instructing change of a receiving channel of the receiving unit, and control unit for, in response to the instruction of channel change by the instruction unit, comparing an ending time of a program being broadcasted on a first channel which is being received by the receiving unit and an ending time of a program being broadcasted on a second channel after the change, and controlling a channel change operation of the receiving unit based on a result of the comparison.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: January 1, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyuki Ohno, Teruki Kikkawa
  • Method and apparatus for bit vector array
    Patent number: 7284260
    Abstract: A bit vector array apparatus provides a high speed method for processing network transmission controls. Complex data structures for controlling network access are represented in the simplest possible form as single bit vector elements. The bit vector elements are combined into bit vectors comprised of 32 single bit vector elements. The bit vectors are processed in parallel in the bit vector array apparatus, which is comprised of special-purpose bit manipulation functions to expedite the processing.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: October 16, 2007
    Assignee: International Business Machines Corporation
    Inventors: Paul John Hilts, Brian Alan Youngman