Patents by Inventor Andrei Barbu
Andrei Barbu 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).
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Patent number: 11381715Abstract: In an embodiment, a method, and corresponding system and non-transitory computer readable medium storing instructions configured to cause a processor to execute steps are configured to introduce an auxiliary transformation to a digital media, resulting in a transformed digital media by generating the auxiliary transformation with a transform function. The method is further configured to evaluate the transformed digital media to generate a metric estimating a human response to the transformed digital media altered by the introduced auxiliary transformation. The method is further configured to train a neural network to remove the auxiliary transformation from any digital media by learning a desired transformation function from the transformed digital media and the metric associated with the transformed digital media.Type: GrantFiled: June 24, 2019Date of Patent: July 5, 2022Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Andrei Barbu, Dalitso Banda, Boris Katz
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Publication number: 20210170594Abstract: The present approach similarly combines task and motion planning, but does so without symbolic representations and begins with simpler tasks than other models in such domains can handle. Unlike prior approaches, the present approach does so in continuous action and state spaces which require many precise steps in the configuration space to execute what otherwise is a single output token such as “pick up” for discrete problems.Type: ApplicationFiled: December 4, 2020Publication date: June 10, 2021Inventors: Yen-Ling Kuo, Boris Katz, Andrei Barbu
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Publication number: 20200021718Abstract: In an embodiment, a method, and corresponding system and non-transitory computer readable medium storing instructions configured to cause a processor to execute steps are configured to introduce an auxiliary transformation to a digital media, resulting in a transformed digital media by generating the auxiliary transformation with a transform function. The method is further configured to evaluate the transformed digital media to generate a metric estimating a human response to the transformed digital media altered by the introduced auxiliary transformation. The method is further configured to train a neural network to remove the auxiliary transformation from any digital media by learning a desired transformation function from the transformed digital media and the metric associated with the transformed digital media.Type: ApplicationFiled: June 24, 2019Publication date: January 16, 2020Inventors: Andrei Barbu, Dalitso Banda, Boris Katz
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Patent number: 9183466Abstract: A method of testing a video against an aggregate query includes automatically receiving an aggregate query defining participant(s) and condition(s) on the participant(s). Candidate object(s) are detected in the frames of the video. A first lattice is constructed for each participant, the first-lattice nodes corresponding to the candidate object(s). A second lattice is constructed for each condition. An aggregate lattice is constructed using the respective first lattice(s) and the respective second lattice(s). Each aggregate-lattice node includes a scoring factor combining a first-lattice node factor and a second-lattice node factor. respective aggregate score(s) are determined of one or more path(s) through the aggregate lattice, each path including a respective plurality of the nodes in the aggregate lattice, to determine whether the video corresponds to the aggregate query.Type: GrantFiled: December 6, 2013Date of Patent: November 10, 2015Assignee: Purdue Research FoundationInventors: Jeffrey Mark Siskind, Andrei Barbu, Siddharth Narayanaswamy, Haonan Yu
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Publication number: 20140369596Abstract: A method of testing a video against an aggregate query includes automatically receiving an aggregate query defining participant(s) and condition(s) on the participant(s). Candidate object(s) are detected in the frames of the video. A first lattice is constructed for each participant, the first-lattice nodes corresponding to the candidate object(s). A second lattice is constructed for each condition. An aggregate lattice is constructed using the respective first lattice(s) and the respective second lattice(s). Each aggregate-lattice node includes a scoring factor combining a first-lattice node factor and a second-lattice node factor. respective aggregate score(s) are determined of one or more path(s) through the aggregate lattice, each path including a respective plurality of the nodes in the aggregate lattice, to determine whether the video corresponds to the aggregate query.Type: ApplicationFiled: December 6, 2013Publication date: December 18, 2014Applicant: Purdue Research FoundationInventors: Jeffrey Mark Siskind, Andrei Barbu, Siddharth Narayanaswamy, Haonan Yu
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Patent number: 8787504Abstract: Schemes for combining channel-estimates from different OFDM frames after compensating for changes in receiver-transmitter characteristics.Type: GrantFiled: November 16, 2012Date of Patent: July 22, 2014Assignee: Cambridge Silicon Radio LimitedInventor: Andrei Barbu Popescu
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Publication number: 20140078958Abstract: A station for accessing the resources of an access point in a wireless network, the station including a transmitter that is arranged to formulate probe requests and a transmit chain that is arranged to transmit probe requests on multiple channels of the access point simultaneously, wherein the probe requests are configured to elicit responses from the access point.Type: ApplicationFiled: September 20, 2012Publication date: March 20, 2014Applicant: Cambridge Silicon Radio LimitedInventors: Andrei Barbu Popescu, Martin Robert Evans, Paul Christopher McFarthing
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Patent number: 8498596Abstract: A signal quality estimator for estimating the quality of signal reception in a signal receiver, the signal quality estimator comprising: a first filter for filtering a signal received by the receiver to isolate a frequency band therein; and a signal analyzer for forming an indication of the degree to which the amplitude of the signal in that frequency band varies over time, to serve as an estimate of the quality of signal reception in the receiver.Type: GrantFiled: November 29, 2007Date of Patent: July 30, 2013Assignee: Cambridge Silicon Radio LimitedInventor: Andrei Barbu Popescu
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Patent number: 8295872Abstract: Improved power control methods and power control systems are described wherein received RSSI values are processed to generate a power control signal which may be used by a link manager, or other element in a receiving station, to determine whether to send a power control message to the transmitting station. The method used to process the received RSSI values is dependent upon a value of the power measurement, for example, the method may involve a comparison between the value of the power measurement and a value of the power control signal. In another embodiment, the received RSSI values may be converted to power values and then smoothed using a filter.Type: GrantFiled: October 22, 2009Date of Patent: October 23, 2012Assignee: Cambridge Silicon Radio Ltd.Inventors: Paul Wright, James Digby Yarlet Collier, Andrei Barbu Popescu
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Patent number: 8203944Abstract: A method for transmitting data over a network in which multiple transmission conditions can be used for transmitting data, the method comprising selecting a transmission condition to be used when transmitting data over the network, said selection being made in dependence on a predetermined preference distribution that for each of the multiple transmission conditions defines a probability of that transmission condition being selected, using the selected transmission condition when transmitting data over the network and determining the success of the transmission and updating the preference distribution in dependence on the success of the transmission and thereafter selecting a transmission condition for transmitting data over the network in dependence on the updated preference distribution.Type: GrantFiled: November 9, 2007Date of Patent: June 19, 2012Assignee: Cambridge Silicon Radio LimitedInventors: Andrei Barbu Popescu, Timothy Condren Smith, Peter William Stephenson
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Patent number: 8023917Abstract: An interference rejection unit for at least partially rejecting a narrowband interferer from an input signal, the unit comprising: an interferer detector for detecting the phase of an interferer in the input signal; a signal generator for generating a cancellation signal in dependence on the phase detected by the interferer detector; and a signal combiner for combining the input signal with the tone cancellation signal to generate an output signal in which the interferer is at least partially cancelled from the input signal.Type: GrantFiled: January 18, 2007Date of Patent: September 20, 2011Assignee: Cambridge Silicon Radio LimitedInventor: Andrei Barbu Popescu
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Patent number: 8023487Abstract: A method for transmitting data over a network in which multiple transmission conditions can be used for transmitting data, each transmission condition being associated with a rating indicative of how successful previous data transmissions using that transmission condition have been, the method comprising using a selected transmission condition when transmitting data over the network and updating the rating associated with the selected transmission condition in dependence on the success of that transmission, updating the ratings associated with the transmission conditions other than the selected transmission condition by adjusting each of those ratings by a predetermined amount and selecting a transmission condition in dependence on the updated ratings.Type: GrantFiled: November 9, 2007Date of Patent: September 20, 2011Assignee: Cambridge Silicon Radio LimitedInventors: Andrei Barbu Popescu, Timothy Condren Smith, Peter William Stephenson
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Publication number: 20100219876Abstract: An interference rejection unit for at least partially rejecting a narrowband interferer from an input signal, the unit comprising: an interferer detector for detecting the phase of an interferer in the input signal; a signal generator for generating a cancellation signal in dependence on the phase detected by the interferer detector; and a signal combiner for combining the input signal with the tone cancellation signal to generate an output signal in which the interferer is at least partially cancelled from the input signal.Type: ApplicationFiled: January 18, 2007Publication date: September 2, 2010Applicant: CAMBRIDGE SILICON RADIO LIMITEDInventor: Andrei Barbu Popescu
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Publication number: 20100151807Abstract: A signal quality estimator for estimating the quality of signal reception in a signal receiver, the signal quality estimator comprising: a first filter for filtering a signal received by the receiver to isolate a frequency band therein; and a signal analyzer for forming an indication of the degree to which the amplitude of the signal in that frequency band varies over time, to serve as an estimate of the quality of signal reception in the receiver.Type: ApplicationFiled: November 29, 2007Publication date: June 17, 2010Applicant: CAMBRIDGE SILICON RADIO LIMITEDInventor: Andrei Barbu Popescu
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Publication number: 20100105421Abstract: Improved power control methods and power control systems are described wherein received RSSI values are processed to generate a power control signal which may be used by a link manager, or other element in a receiving station, to determine whether to send a power control message to the transmitting station. The method used to process the received RSSI values is dependent upon a value of the power measurement, for example, the method may involve a comparison between the value of the power measurement and a value of the power control signal. In another embodiment, the received RSSI values may be converted to power values and then smoothed using a filter.Type: ApplicationFiled: October 22, 2009Publication date: April 29, 2010Applicant: Cambridge Silicon Radio Ltd.Inventors: Paul Wright, James Digby Yarlet Collier, Andrei Barbu Popescu
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Publication number: 20080117888Abstract: A method for transmitting data over a network in which multiple transmission conditions can be used for transmitting data, each transmission condition being associated with a rating indicative of how successful previous data transmissions using that transmission condition have been, the method comprising using a selected transmission condition when transmitting data over the network and updating the rating associated with the selected transmission condition in dependence on the success of that transmission, updating the ratings associated with the transmission conditions other than the selected transmission condition by adjusting each of those ratings by a predetermined amount and selecting a transmission condition in dependence on the updated ratings.Type: ApplicationFiled: November 9, 2007Publication date: May 22, 2008Applicant: Cambridge Silicon Radio LimitedInventors: Andrei Barbu Popescu, Timothy Condren Smith, Peter William Stephenson
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Publication number: 20080117814Abstract: A method for transmitting data over a network in which multiple transmission conditions can be used for transmitting data, the method comprising selecting a transmission condition to be used when transmitting data over the network, said selection being made in dependence on a predetermined preference distribution that for each of the multiple transmission conditions defines a probability of that transmission condition being selected, using the selected transmission condition when transmitting data over the network and determining the success of the transmission and updating the preference distribution in dependence on the success of the transmission and thereafter selecting a transmission condition for transmitting data over the network in dependence on the updated preference distribution.Type: ApplicationFiled: November 9, 2007Publication date: May 22, 2008Applicant: Cambridge Silicon Radio LimitedInventors: Andrei Barbu Popescu, Timothy Condren Smith, Peter William Stephenson
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Patent number: D718716Type: GrantFiled: March 18, 2014Date of Patent: December 2, 2014Assignee: Bitdefender IPR Management Ltd.Inventors: Andrei Barbu, Dan R. Berte, Bogdan C. Dumitru, Alexandru V. Veja
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Patent number: D744483Type: GrantFiled: September 16, 2014Date of Patent: December 1, 2015Assignee: Bitdefender IPR Management Ltd.Inventors: Andrei Barbu, Dan R. Berte, Bogdan C. Dumitru, Alexandru V. Veja
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Patent number: D764460Type: GrantFiled: June 24, 2014Date of Patent: August 23, 2016Assignee: Bitdefender IPR Management Ltd.Inventors: Alexandru V. Veja, Andrei Barbu, Dan R. Berte, Bogdan C. Dumitru