Patents by Inventor Aurel Lazar

Aurel Lazar 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: 9892518
    Abstract: Systems and methods for the detection of motion in a multi-dimensional signal are provided. According to aspects of the disclosure, data representing a time sequence of frames of a video stream is received. A multi-dimensional Gaussian window in is then constructed. Each frame of the received data is divided into a plurality of blocks and, for each block in the plurality of blocks, each pixel in the block is multiplied with a corresponding pixel of the Gaussian window to obtain a windowed video block. The FFT of the windowed video block is computed to obtain an amplitude and phase thereof. The occurrence of motion in the block is then determined based on the computed phase of the windowed video block.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: February 13, 2018
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Aurel Lazar, Nikul H. Ukani, Yiyin Zhou
  • Publication number: 20170213350
    Abstract: Systems and methods for the detection of motion in a multi-dimensional signal are provided. According to aspects of the disclosure, data representing a time sequence of frames of a video stream is received. A multi-dimensional Gaussian window in is then constructed. Each frame of the received data is divided into a plurality of blocks and, for each block in the plurality of blocks, each pixel in the block is multiplied with a corresponding pixel of the Gaussian window to obtain a windowed video block. The FFT of the windowed video block is computed to obtain an amplitude and phase thereof. The occurrence of motion in the block is then determined based on the computed phase of the windowed video block.
    Type: Application
    Filed: June 9, 2016
    Publication date: July 27, 2017
    Applicant: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: Aurel Lazar, Nikul H. Ukani, Yiyin Zhou
  • Patent number: 8131616
    Abstract: A method for controlling access to a system of finite resources with excess demand employs a two stage admission process. Subscribers are first admitted based on an initial bid price and resource availability. The market price is determined by the highest bid price among the rejected arrivals in the current batch. Admitted subscribers are then given the option to secure continued access to the resource by accepting a fee-based reservation. The fee for the reservation is determined in a manner which is fair to the reserving subscriber, as well as all other subscribers, in that the reservation fee is priced to provide access at a cost which prevents arbitraging opportunities. If the current market price exceeds a non-reserved subscriber's bid price, that non-reserved subscriber is displaced. If the current market price exceeds a reserved subscriber's bid price, that reserved subscriber's reservation is activated and access to the resource continues.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: March 6, 2012
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Nemo Semret, Aurel Lazar
  • Patent number: 7792724
    Abstract: A method for controlling access to a system of finite resources with excess demand employs a two stage admission process. Subscribers are first admitted based on an initial bid price and resource availability. The market price is determined by the highest bid price among the rejected arrivals in the current batch. Admitted subscribers are then given the option to secure continued access to the resource by accepting a fee-based reservation. The fee for the reservation is determined in a manner which is fair to the reserving subscriber, as well as all other subscribers, in that the reservation fee is priced to provide access at a cost which prevents arbitraging opportunities. If the current market price exceeds a non-reserved subscriber's bid price, that non-reserved subscriber is displaced. If the current market price exceeds a reserved subscriber's bid price, that reserved subscriber's reservation is activated and access to the resource continues.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: September 7, 2010
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Nemo Semret, Aurel Lazar
  • Publication number: 20090254383
    Abstract: A method for controlling access to a system of finite resources with excess demand employs a two stage admission process. Subscribers are first admitted based on an initial bid price and resource availability. The market price is determined by the highest bid price among the rejected arrivals in the current batch. Admitted subscribers are then given the option to secure continued access to the resource by accepting a fee-based reservation. The fee for the reservation is determined in a manner which is fair to the reserving subscriber, as well as all other subscribers, in that the reservation fee is priced to provide access at a cost which prevents arbitraging opportunities. If the current market price exceeds a non-reserved subscriber's bid price, that non-reserved subscriber is displaced. If the current market price exceeds a reserved subscriber's bid price, that reserved subscriber's reservation is activated and access to the resource continues.
    Type: Application
    Filed: June 15, 2009
    Publication date: October 8, 2009
    Applicant: The Trustees of Columbia University in the City of New York
    Inventors: Nemo Semret, Aurel Lazar
  • Publication number: 20080100482
    Abstract: Analog signals can be fully encoded as an asynchronous time sequence generated by a time encoding machine. With knowledge of the parameters of the time encoding machine, the asynchronous time sequence can be decoded using a non-linear time decoding machine. Such a system can be extended into an encoder/decoder in which a signal is processed in M separate channels. An input signal is applied to the encoder where the signal is provided to an M channel encoder circuit including a filter bank having a total bandwidth partitioned among M adjacent or overlapping filters. Each of the M filters are coupled to a corresponding one of M time encoding machines. The encoder output is represented by M sets of time encoded trigger values. The input signal can be recovered from the M sets of time encoded trigger values by applying the trigger signals to a corresponding M channel decoder which includes M TDMs and filters. The TDMs recover the continuous signal from each channel.
    Type: Application
    Filed: December 27, 2007
    Publication date: May 1, 2008
    Inventor: Aurel Lazar
  • Publication number: 20070297328
    Abstract: A method for controlling access to a system of finite resources with excess demand employs a two stage admission process. Subscribers are first admitted based on an initial bid price and resource availability. The market price is determined by the highest bid price among the rejected arrivals in the current batch. Admitted subscribers are then given the option to secure continued access to the resource by accepting a fee-based reservation. The fee for the reservation is determined in a manner which is fair to the reserving subscriber, as well as all other subscribers, in that the reservation fee is priced to provide access at a cost which prevents arbitraging opportunities. If the current market price exceeds a non-reserved subscriber's bid price, that non-reserved subscriber is displaced. If the current market price exceeds a reserved subscriber's bid price, that reserved subscriber's reservation is activated and access to the resource continues.
    Type: Application
    Filed: September 7, 2007
    Publication date: December 27, 2007
    Inventors: Nemo Semret, Aurel Lazar
  • Patent number: 7290009
    Abstract: A network computer server system for controlling a plurality of network access lines to provide subscriber access to a computer network comprising an access line interface for partitioning the plurality of network access lines as first and second stage lines, including a processor encoded with instructions. The instructions include determining an available number of second stage lines; queuing arriving subscribers bidding for network access in the first stage lines; determining a spot price of the resource based on at least one arrival subscriber not admitted to the second stage lines; determining a reservation fee for secured access to the network; determining whether a subscriber has accepted or rejected the reservation fee; controlling the access line interface to disconnect from the network non-reserved subscribers whose bid prices are below the spot price; and activating a reservation of reserved subscribers whose bid price is below the spot price.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: October 30, 2007
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Nemo Semret, Aurel Lazar
  • Publication number: 20060261986
    Abstract: Analog signals can be fully encoded as an asynchronous time sequence generated by a time encoding machine. With knowledge of the parameters of the time encoding machine, the asynchronous time sequence can be decoded using a non-linear time decoding machine. Such a system can be extended into an encoder/decoder in which a signal is processed in M separate channels. An input signal is applied to the encoder where the signal is provided to an M channel encoder circuit including a filter bank having a total bandwidth partitioned among M adjacent or overlapping filters. Each of the M filters are coupled to a corresponding one of M time encoding machines. The encoder output is represented by M sets of time encoded trigger values. The input signal can be recovered from the M sets of time encoded trigger values by applying the trigger signals to a corresponding M channel decoder which includes M TDMs and filters. The TDMs recover the continuous signal from each channel.
    Type: Application
    Filed: November 22, 2005
    Publication date: November 23, 2006
    Inventor: Aurel Lazar
  • Patent number: 7110977
    Abstract: A method for controlling access to a system of finite resources with excess demand employs a two stage admission process. Subscribers are first admitted based on an initial bid price and resource availability. The market price is determined by the highest bid price among the rejected arrivals in the current batch. Admitted subscribers are then given the option to secure continued access to the resource by accepting a fee-based reservation. The fee for the reservation is determined in a manner which is fair to the reserving subscriber, as well as all other subscribers, in that the reservation fee is priced to provide access at a cost which prevents arbitraging opportunities. If the current market price exceeds a non-reserved subscriber's bid price, that non-reserved subscriber is displaced. If the current market price exceeds a reserved subscriber's bid price, that reserved subscriber's reservation is activated and access to the resource continues.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: September 19, 2006
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Nemo Semret, Aurel Lazar
  • Publication number: 20050190865
    Abstract: Analog signals can be fully encoded as an asynchronous time sequence generated by a time encoding machine (TEM). With knowledge of the parameters of the time encoding machine, the asynchronous time sequence can be decoded using a non-linear time decoding machine. In one embodiment, the non-linear time decoding machine generates a set of weighted Dirac delta functions centered in the intervals of the asynchronous time sequence of the time encoding machine output. The weighting of each of the delta functions is determined by the parameters of the TEM as well as the values of the time sequence. The generation of the series of delta functions is a nonlinear operation (500, 510, 520). The input signal can be recovered from the series of weighted delta functions by (530) applying this series through an impulse response filter.
    Type: Application
    Filed: February 2, 2005
    Publication date: September 1, 2005
    Inventors: Aurel Lazar, Laszlo Toth
  • Publication number: 20030083926
    Abstract: A method for controlling access to a system of finite resources with excess demand employs a two stage admission process. Subscribers are first admitted based on an initial bid price and resource availability. The market price is determined by the highest bid price among the rejected arrivals in the current batch. Admitted subscribers are then given the option to secure continued access to the resource by accepting a fee-based reservation. The fee for the reservation is determined in a manner which is fair to the reserving subscriber, as well as all other subscribers, in that the reservation fee is priced to provide access at a cost which prevents arbitraging opportunities. If the current market price exceeds a non-reserved subscriber's bid price, that non-reserved subscriber is displaced. If the current market price exceeds a reserved subscriber's bid price, that reserved subscriber's reservation is activated and access to the resource continues.
    Type: Application
    Filed: September 18, 2002
    Publication date: May 1, 2003
    Inventors: Nemo Semret, Aurel Lazar