Patents by Inventor Alexander Tesler
Alexander Tesler 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: 10330218Abstract: A gating mechanism that uses a capillary stabilized liquid as a reversible, reconfigurable gate that fills and seals pores in the closed state, and creates a non-fouling, liquid-lined pore in the open state is disclosed. Theoretical modeling and experiments demonstrate that for each transport substance, the gating threshold—the pressure needed to open the pores—can be rationally tuned over a wide pressure range. This enables realizing in one system differential response profiles for a variety of liquids and gases, even letting liquids flow through the pore while preventing gas from escaping. These capabilities allow dynamic modulation of gas-liquid sorting and to separate multi-phase mixtures, with the liquid lining ensuring sustained antifouling behavior.Type: GrantFiled: February 9, 2016Date of Patent: June 25, 2019Assignee: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Xu Hou, Mughees Khan, Alexander Tesler
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Publication number: 20180023728Abstract: A gating mechanism that uses a capillary stabilized liquid as a reversible, reconfigurable gate that fills and seals pores in the closed state, and creates a non-fouling, liquid-lined pore in the open state is disclosed. Theoretical modeling and experiments demonstrate that for each transport substance, the gating threshold—the pressure needed to open the pores—can be rationally tuned over a wide pressure range. This enables realizing in one system differential response profiles for a variety of liquids and gases, even letting liquids flow through the pore while preventing gas from escaping. These capabilities allow dynamic modulation of gas-liquid sorting and to separate multi-phase mixtures, with the liquid lining ensuring sustained antifouling behavior.Type: ApplicationFiled: February 9, 2016Publication date: January 25, 2018Inventors: Joanna AIZENBERG, Xu HOU, Mughees KHAN, Alexander TESLER
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Patent number: 7953320Abstract: A first signal shaper generates a first signal having a first asymmetry. A second signal shaper generates a second signal having a second asymmetry different from the first asymmetry. The first and second signals have approximately the same peak-to-peak amplitude. An AC measurement element acquires a first scaled representation of the shape of the first signal and a second scaled representation of the shape of the second signal. A DC measurement element receives the first signal and the second signal and generates a first value responsive to the first signal and a second value responsive to the second signal. A processor calculates a first factor responsive to the shape of the first signal and a second factor responsive to the shape of the second signal. The processor applies the first and second factors and the first and second values in a function that generates the AC/DC cross-calibration coefficient.Type: GrantFiled: March 20, 2008Date of Patent: May 31, 2011Assignee: Avago Technologies Fiber IP (Singapore) Pte. Ltd.Inventor: Alexander Tesler
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Patent number: 7904265Abstract: A controllable delay element is coupled in parallel with a calibration circuit. The calibration circuit receives a periodic reference signal and generates a series of sample voltages responsive to a time-varying analog voltage, the periodic reference signal, and the delayed periodic signal at the output of the controllable delay element. The calibration circuit distributes the series of sampled voltages for determining the components of a first vector. The first vector components are used to calculate the phase that results from a control signal applied to the controllable delay element. After the control signal is modified, a second vector is used to calculate the phase that results from the control signal. The delay can be determined by the product of the period of the reference signal and the difference in phase.Type: GrantFiled: March 20, 2008Date of Patent: March 8, 2011Assignee: Avago Technologies Fiber IP (Singapore) Pte. Ltd.Inventor: Alexander Tesler
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Publication number: 20090238560Abstract: A first signal shaper generates a first signal having a first asymmetry. A second signal shaper generates a second signal having a second asymmetry different from the first asymmetry. The first and second signals have approximately the same peak-to-peak amplitude. An AC measurement element acquires a first scaled representation of the shape of the first signal and a second scaled representation of the shape of the second signal. A DC measurement element receives the first signal and the second signal and generates a first value responsive to the first signal and a second value responsive to the second signal. A processor calculates a first factor responsive to the shape of the first signal and a second factor responsive to the shape of the second signal. The processor applies the first and second factors and the first and second values in a function that generates the AC/DC cross-calibration coefficient.Type: ApplicationFiled: March 20, 2008Publication date: September 24, 2009Applicant: AVAGO TECHNOLOGIES FIBER IP (SINGAPORE) PTE. LTDInventor: Alexander Tesler
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Publication number: 20090240456Abstract: A controllable delay element is coupled in parallel with a calibration circuit. The calibration circuit receives a periodic reference signal and generates a series of sample voltages responsive to a time-varying analog voltage, the periodic reference signal, and the delayed periodic signal at the output of the controllable delay element. The calibration circuit distributes the series of sampled voltages for determining the components of a first vector. The first vector components are used to calculate the phase that results from a control signal applied to the controllable delay element. After the control signal is modified, a second vector is used to calculate the phase that results from the control signal. The delay can be determined by the product of the period of the reference signal and the difference in phase.Type: ApplicationFiled: March 20, 2008Publication date: September 24, 2009Applicant: AVAGO TECHNOLOGIES FIBER IP (SINGAPORE) PTE. LTDInventor: Alexander Tesler
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Publication number: 20070286419Abstract: The invention describes a method of efficient way of video delivery in the legacy (non-802.11e) infrastructure networks and a device (Transmitter) based on this method. The invention permits the video stream to bypass the access point and therefore increases the available bandwidth by a factor of two or more and permits increasing the throughput by improving only the radio and antenna on the Transmitter (as opposed to improvements on both the Transmitter and AP necessary without the invention).Type: ApplicationFiled: June 7, 2006Publication date: December 13, 2007Inventors: Dmitri Varsanofiev, Alexander Tesler, Alexander Pevzner
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Publication number: 20060104436Abstract: Method of transmitting DSL data over 2 POTS loops providing concurrent operation of 2 telephone lines and one DSL line over up to a 10 km loop.Type: ApplicationFiled: November 17, 2005Publication date: May 18, 2006Inventors: Alexander Tesler, Mikhail Korenblioum, Michael Troflianin
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Publication number: 20040228043Abstract: A small-size magnetoresistive device which allows measurement of spatial distribution of magnetic field along one axis with high resolution is disclosed. The magnetoresistive device includes: a magnetoresistive stripe oriented along the measurement axis; a plurality of conductive layers comprising electrodes distributed along the length of the stripe, separated by insulating layers. The measurement of the spatial distribution of the magnetic field is performed by analyzing signal levels between electrodes.Type: ApplicationFiled: May 15, 2004Publication date: November 18, 2004Inventors: Alexander Tesler, Dmitri Varsanofiev
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Patent number: 5796541Abstract: An apparatus for servo track writing on a magnetic medium comprises a clock head (12) and a regular head (14). The regular head (14) writes an initial approximation of the clock track so as to leave a small gap between the last written pulse of the clock track and the first pulse of the clock track. Then this gap is measured by gap measurement system (33) and the frequency of clock track is updated using a direct digital synthesis system (35) so as to fill a full clock track during the next writing. The initial clock track is read by regular head (14) and its output signal is supplied to a phase locked loop. The output of the phase locked loop drives a direct digital synthesis system (35), which generates a modified frequency on its output. A signal of this frequency, in turn, is supplied to the clock head (12), which writes a new improved clock track on the disk.Type: GrantFiled: November 21, 1995Date of Patent: August 18, 1998Assignee: Guzik Technical Enterprises, Inc.Inventors: Anatoly Stein, Alexander Tesler, Dimitry Varsanofiev
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Patent number: 5490091Abstract: A method and apparatus for measuring the error rate of a magnetic recording device, such as a hard disk storing a set of data. The apparatus has a partial response maximum likelihood data detecting channel (PRML channel) which differs from a conventional PRML channel by including a noise processing unit (66) which is connected between the output of an A/D converter (54) and the input of a sequence detector (60), and a histogrammer (70), which is connected to the output of a noise processing unit. The method consists of estimating a sequence of noise samples received from the output of the A/D converter (54), processing the sequence of noise samples according to a plurality of predetermined sets of processing coefficients, accumulating a plurality of histograms of segregated processed noise samples, and processing the plurality of histograms so as to determine a dependence of a number of errors on a preselected criterion which characterizes a signal-to-noise ratio of the PRML channel.Type: GrantFiled: March 1, 1994Date of Patent: February 6, 1996Assignee: Guzik Technical Enterprises, Inc.Inventors: Andrew Kogan, Alexander Taratorin, Alexander Tesler, Dmitry Varsanofiev