Patents by Inventor Henry Pfister

Henry Pfister 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: 20190089379
    Abstract: Methods and apparatus for the decoding of forward error correction codes. One method includes decoding a number of component codes including code symbols, for which at least one code symbol is involved in multiple component codes, and analyzing the decoding of each of the component codes to generate an outcome. Analyzing the decoding includes estimating at least one possible error location, storing information related to the at least one possible error location; storing state information, and updating the state information.
    Type: Application
    Filed: September 17, 2018
    Publication date: March 21, 2019
    Inventors: Henry Pfister, Christian Haeger
  • Publication number: 20060141935
    Abstract: A method and system for interference cancellation (IC). One aspect relates to traffic interference cancellation. Another aspect relates to joint IC for pilot, overhead and data. Another aspect relates to improved channel estimation. Another aspect relates to adaptation of transmit subchannel gains.
    Type: Application
    Filed: July 29, 2005
    Publication date: June 29, 2006
    Inventors: Jilei Hou, Henry Pfister, John Smee, Stefano Tomasin
  • Publication number: 20060141933
    Abstract: A method and system for interference cancellation (IC). One aspect relates to traffic interference cancellation. Another aspect relates to joint IC for pilot, overhead and data. Another aspect relates to improved channel estimation. Another aspect relates to adaptation of transmit subchannel gains.
    Type: Application
    Filed: July 29, 2005
    Publication date: June 29, 2006
    Inventors: John Smee, Henry Pfister, Jilei Hou, Stefano Tomasin
  • Publication number: 20060141934
    Abstract: A method and system for interference cancellation (IC). One aspect relates to traffic interference cancellation. Another aspect relates to joint IC for pilot, overhead and data. Another aspect relates to improved channel estimation. Another aspect relates to adaptation of transmit subchannel gains.
    Type: Application
    Filed: July 29, 2005
    Publication date: June 29, 2006
    Inventors: Henry Pfister, Jilei Hou, John Smee, Stefano Tomasin
  • Publication number: 20060142041
    Abstract: A method and system for interference cancellation (IC). One aspect relates to traffic interference cancellation. Another aspect relates to joint IC for pilot, overhead and data. Another aspect relates to improved channel estimation. Another aspect relates to adaptation of transmit subchannel gains.
    Type: Application
    Filed: July 29, 2005
    Publication date: June 29, 2006
    Inventors: Stefano Tomasin, Henry Pfister, Jilei Hou, John Smee
  • Publication number: 20060007895
    Abstract: Methods and systems for estimating and canceling pilot interference in a wireless (e.g., CDMA) communication system. In one method, a received signal comprised of a number of signal instances, each including a pilot, is initially processed to provide data samples. Each signal instance's pilot interference may be estimated by despreading the data samples with a spreading sequence for the signal instance, channelizing the despread data to provide pilot symbols, filtering the pilot symbols to estimate the channel response of the signal instance, and multiplying the estimated channel response with the spreading sequence. The pilot interference estimates due to a plurality of interfering multipaths are accumulated to derive the total pilot interference, which is subtracted from the data samples to provide pilot-canceled data samples. These samples are then processed to derive demodulated data for each of at least one (desired) signal instance in the received signal.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 12, 2006
    Inventors: Alessandro Coralli, Henry Pfister, Jilei Hou, John Smee, Roberto Padovani, Brian Butler, Jeffrey Levin, Thomas Wilborn, Paul Bender
  • Publication number: 20050207384
    Abstract: Methods and mobile stations for transmitting, receiving and processing peer-to-peer communication signals without a base station or network element. A transmitting mobile station may alternate two or more long code masks to generate one or more pseudorandom noise (PN) codes to spread data for transmission. A receiving mobile station receives the spread data and achieves synchronization with the transmitting mobile station.
    Type: Application
    Filed: March 14, 2005
    Publication date: September 22, 2005
    Inventors: Roy Quick, Henry Pfister
  • Publication number: 20050135262
    Abstract: Methods and apparatuses to encode and decode information. One apparatus may use an encoder with a relatively low complexity, capacity-achieving code. The code may allow information to be reliably transmitted and received across a noisy medium or channel.
    Type: Application
    Filed: November 30, 2004
    Publication date: June 23, 2005
    Inventor: Henry Pfister
  • Publication number: 20050111383
    Abstract: In a multiple-access network, network access terminals conduct peer-to-peer communications on reverse link channels of the network.
    Type: Application
    Filed: September 29, 2004
    Publication date: May 26, 2005
    Inventors: Matthew Grob, Rashid Attar, Henry Pfister, Klein Gilhousen, Ramin Rezaiifar
  • Publication number: 20050013350
    Abstract: Methods and systems for estimating and canceling pilot interference in a wireless (e.g., CDMA) communication system. In one method, a received signal comprised of a number of signal instances, each including a pilot, is initially processed to provide data samples. Each signal instance's pilot interference may be estimated by despreading the data samples with a spreading sequence for the signal instance, channelizing the despread data to provide pilot symbols, filtering the pilot symbols to estimate the channel response of the signal instance, and multiplying the estimated channel response with the spreading sequence. The pilot interference estimates due to a plurality of interfering multipaths are accumulated to derive the total pilot interference, which is subtracted from the data samples to provide pilot-canceled data samples. These samples are then processed to derive demodulated data for each of at least one (desired) signal instance in the received signal.
    Type: Application
    Filed: August 17, 2004
    Publication date: January 20, 2005
    Inventors: Alessandro Coralli, Henry Pfister, Jilei Hou, John Smee, Roberto Padovani, Brian Butler, Jeffrey Levin, Thomas Wilborn, Paul Bender
  • Patent number: 6490534
    Abstract: A camera based measurement system which can automatically determine tailor body measurements with one camera, few pictures and without requiring the customer to wear special garments. The present invention will automatically detect the neck and other body features and can perform the function with a single camera, and a relatively small number of views.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: December 3, 2002
    Inventor: Henry Pfister
  • Patent number: 4704610
    Abstract: A system for providing early warning of the approach and egress of emergency vehicles in which the warning system provides a display to indicate the direction from which the emergency vehicle is approaching and in addition provides preemption control of the traffic signals at an intersection. A transmitter mounted on an emergency vehicle transmits a signal whenever it is on an emergency call which is received by infrared (I.R.) receivers positioned at an intersection to respond to the transmitted signals. The received signal is then processed by a master controller which in turn pre-empts operation of traffic signals to control traffic flow at the intersection to which the emergency vehicle is approaching. The master controller also provides an output to display signs facing approaching traffic on each road approaching the intersection which displays messages and symbols indicating the direction of the approaching emergency vehicle.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: November 3, 1987
    Inventors: Michel R. Smith, James Davidson, Henry Pfister