Patents by Inventor Jeffrey N. Denenberg

Jeffrey N. Denenberg 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).

  • Patent number: 5815582
    Abstract: An active plus selective headset system for provision of active attenuation of broadband noise as well as speech filtering comprising a headset with reference microphones, residual microphones and speakers on each of a pair of open backed muffs and a controller means.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: September 29, 1998
    Assignee: Noise Cancellation Technologies, Inc.
    Inventors: David Claybaugh, Jeffrey N. Denenberg, Ralph Busch, John Hohman
  • Patent number: 5699436
    Abstract: In the area of active noise cancellation headsets, the noisy environment often encountered in the link with communication systems causes lack of intelligibility on the outward communications path. Consequently another in-wire cancellation channel to enhance the intelligibility is required. This additional processing channel adds to the cost of the headset. The invention uses residual microphones (12) to reproduce the sound that remains in the ear after cancellation so that the controller (13) can make further adjustments through filter (15) and LMS adapter (14) to the anti-noise signal.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: December 16, 1997
    Assignee: Noise Cancellation Technologies, Inc.
    Inventors: David Claybaugh, Jeffrey N. Denenberg
  • Patent number: 5563817
    Abstract: An adaptive canceller filter module having signal sensors and signal filters in a circuit for use with filtered-x algorithms to adapt the coefficients of one of said filters to minimize the measure of the error.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: October 8, 1996
    Assignee: Noise Cancellation Technologies, Inc.
    Inventors: Eldon W. Ziegler, Jr., Paul Friedlander, Jeffrey N. Denenberg
  • Patent number: 5546467
    Abstract: An active noise control system for controlling multiple home appliances and including a power distribution network by which many appliances can be quieted by remotely processing noise signal information and forwarding noise cancelling signals to the appliances through the distribution network.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: August 13, 1996
    Assignee: Noise Cancellation Technologies, Inc.
    Inventor: Jeffrey N. Denenberg
  • Patent number: 5537551
    Abstract: A method for compressing and subsequently decompressing digital data communicated in an interactive computer network, the network designed to provide informational and transactional services to a very large population of users. The method features steps for compressing bytes of network data before transmission by substituting variable-length code words obtained from a fixed, look-up table, and, reconstituting the bytes using a fixed, decompression look-up table when the code words are received at the data reception site.
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: July 16, 1996
    Inventors: Jeffrey N. Denenberg, Edward D. Weinberger, Michael L. Gordon
  • Patent number: 5526432
    Abstract: A ducted axial fan for large diameter ducts (11) which includes equidistantly spaced sensors (22,23) upstream and downstream of an axial fan and spaced actuators (24, 26) located around the periphery of said duct to cancel tonal noise caused by the air turbulence generated by the rotation of the fan.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: June 11, 1996
    Assignee: Noise Cancellation Technologies, Inc.
    Inventor: Jeffrey N. Denenberg
  • Patent number: 5440642
    Abstract: A digitally controlled analog cancellation system containing an analog noise cancellation circuit with a residual microphone (39) with a digital virtual earth controller (40) for optimizing variable parameters employed in the analog cancellation circuit.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: August 8, 1995
    Inventors: Jeffrey N. Denenberg, Randy V. Sabett
  • Patent number: 5375174
    Abstract: A wireless remote active noise canceling headset including residual microphones (35, 34) mounted on the headset (30) with speakers (32, 33) located adjacent to the residual microphones and an algorithm driven synchronous controller to operate said headset.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: December 20, 1994
    Assignee: Noise Cancellation Technologies, Inc.
    Inventor: Jeffrey N. Denenberg
  • Patent number: 5311453
    Abstract: A method and system by which the number of samples used to characterize the noise cycle of an active noise cancellation system varies dynamically as a function of the fundamental operating frequency of the system.
    Type: Grant
    Filed: September 11, 1992
    Date of Patent: May 10, 1994
    Assignee: Noise Cancellation Technologies, Inc.
    Inventors: Jeffrey N. Denenberg, Roy H. Scott
  • Patent number: 4620286
    Abstract: A probabilistic learning element for performing task independent sequential pattern recognition. The element receives sequences of objects and outputs sequences of recognized states composed of objects. A plurality of memory elements are utilized to store received objects in sequence and for storing in context learned information including previously learned states, objects contained in previously learned states, positional information for each object in a learned state and other predetermined types of knowledge relating to previously learned states and objects contained therein. The element correlates sequences of received objects with learned information relating to previously learned states for providing conditional probabilities to possible sequences of recognized states. The most likely state sequence is determined and outputted as a recognized sequence when the element detects that a state has ended.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: October 28, 1986
    Assignee: ITT Corporation
    Inventors: Allen R. Smith, Chuan-Chieh Tan, Thomas B. Slack, Jeffrey N. Denenberg
  • Patent number: 4599693
    Abstract: A probabilistic learning system of the type that receives sequential input data and outputs sequences of recognized patterns. The system includes an array of interconnected probabilistic learning elements of the type that receive sequences of objects and outputs sequences of recognized states, the array of learning elements being interconnected to have a number of input learning elements and a number of output learning elements. The input data is partitioned between the input learning elements of the array so that the partitioned input data forms objects provided to the learning elements in an overlapping and redundant manner. The output sequences of recognized states from the output learning elements are collected and combined to provide a sequence of recognized patterns as an output of the probabilistic learning system.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: July 8, 1986
    Assignee: ITT Corporation
    Inventor: Jeffrey N. Denenberg
  • Patent number: 4599692
    Abstract: A probabilistic learning element for performing task independent sequential pattern recognition employs context driven searching. The element receives sequences of objects and outputs sequences of recognized states composed of objects. The element includes a short term memory for storing received objects in sequential context and long term memories for storing in sequential context previously learned states and predetermined types of knowledge relating to the previously learned states. The element correlates the information stored in the short term memory with information stored in the long term memories for assigning probabilities to possible next states in the sequence of recognized states. The correlation is facilitated by using the context of the information stored in the short term memory as a pointer to the context of the information stored in the long term memories.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: July 8, 1986
    Assignee: ITT Corporation
    Inventors: Chuan-Chieh Tan, Thomas B. Slack, Jeffrey N. Denenberg
  • Patent number: 4593367
    Abstract: A probabilistic learning element particularly adapted for use as a task independent sequential pattern recognition device receives sequences of objects and outputs sequences of recognized states composed of objects and includes a plurality of memories for storing the received sequences of objects and previously learned states as well as predetermined types of knowledge relating to previously learned states. The sequences of received objects are correlated with the information relating to the previously learned states in order to assign probabilities to possible next states in the sequence of recognized states. Based upon the probabilities of the possible next states the most likely next state is determined and outputted as a recognized next state in the recognized state sequence when the element determines that a state has ended. The element additionally includes means for providing a rating of confidence in the recognized next state.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: June 3, 1986
    Assignee: ITT Corporation
    Inventors: Thomas B. Slack, Jeffrey N. Denenberg
  • Patent number: 4201891
    Abstract: A distributed control digital switching network is configured as a group switch having a plurality of stages of multiport single sided switching elements for selectively interconnecting a plurality of input terminals via the transmission paths established through the network by path selection control signals which are multiplexed on common transmission links to and through the network together with digitally encoded data from the terminals on common transmission paths such that data is received phase asynchronously at each stage of the network and is either coupled to a higher order stage of the network or folded back through the network by reflection to interconnect terminals switched by the network. The single-sided switching elements are selectively operable as single-sided or multi-sided in accordance with their position in the network.
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: May 6, 1980
    Assignee: International Telephone and Telegraph Corporation
    Inventors: Alan J. Lawrence, John M. Cotton, Jeffrey N. Denenberg
  • Patent number: 4201889
    Abstract: A distributed control digital switching system is described in which a plurality of subscriber lines and trunks are provided with a switched access to various processing functions shared over a plurality of time shared multiplexed lines. Each processor of a first group of processors is dedicated to a group of terminals such as subscriber lines or trunks, and communicate with processors in a second group to provide pooled processing functions to one or more of said groups of terminals through a digital switching matrix. Processors in the first group perform a first set of processing functions, such as path set up and processors of the second group perform a second set of processing functions, such as call control.
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: May 6, 1980
    Assignee: International Telephone and Telegraph
    Inventors: Alan J. Lawrence, John M. Cotton, Kenneth J. Hamer-Hodges, Jeffrey N. Denenberg
  • Patent number: 4201890
    Abstract: A multiport single sided switching element is described for providing space and time switching between the input ports thereof and the output ports thereof in response to digital command signals for frames of digitally encoded data in a plurality of channels which is phase (bit) asynchronously coupled to any port of the switching element, the command signals being in for example the same channels as is the data.
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: May 6, 1980
    Assignee: International Telephone and Telegraph
    Inventors: Alan J. Lawrence, Jeffrey N. Denenberg, Murray Rubinstein, Daniel C. Upp