Trifonov
Alexei Trifonov, Boston, MA US
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20090022322 | Entanglement-Based Qkd System With Active Phase Tracking - Entanglement-based QKD systems and methods with active phase tracking and stabilization are disclosed. The method includes generating in an initial state-preparation stage (Charlie) pairs of coherent photons (P | 01-22-2009 |
20090034737 | Diamond nanocrystal single-photon source with wavelength converter - A single-photon source (SPS) ( | 02-05-2009 |
20090202074 | QKD station with EMI signature suppression - Methods and systems for suppressing the electromagnetic interference (EMI) signature generated by a QKD station are disclosed. One of the methods includes generating two or more modulator drive signals corresponding to two or more of the n possible modulator states of the particular QKD protocol. The modulator drive signals are sent to a random number generation (RNG) unit, which randomly selects one of the two or more modulator drive signals and passes it to the modulator. Another method involves generating two modulator drive signals, wherein the voltage sum is constant. One signal is sent to the modulator while the other is sent to a circuit-terminating element, which can be a second modulator. The method suppresses the EMI signature associated with individual modulation states. This prevents an eavesdropper from gaining information about the modulator states via the EMI signature, which information could otherwise yield information about the exchanged key. | 08-13-2009 |
20100166187 | QKD USING HIGH-ALTITUDE PALTFORMS - Systems and methods for performing quantum key distribution (QKD) using one or more high-altitude platforms (HAPs) are disclosed. The system includes a second QKD station (Alice) supported by the HAP so as to be in free-space communication with the first QKD station (Bob) over an optical path (OP) via an optical quantum communication channel that carries quantum signals (P | 07-01-2010 |
Alexel Trifonov, Boston, MA US
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20090028340 | Tunable compact entangled-photon source and QKD system using same - A robust, quickly tunable narrow-linewidth entangled photon source system based on Spontaneous Parametric Down Conversion (SPDC) of the pump light in periodically polled LiNbO | 01-29-2009 |
Borislav Trifonov, Vancouver CA
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20120154310 | Interactive Multimedia Advertising System - An interactive multimedia advertising system is disclosed. The system comprising: a plurality of interactive advertising kiosks that are deployed over a secure network; a centralized server in communications with each of the plurality of advertising kiosks; means for controlling and monitoring each advertising kiosks; means for managing multiple content modules on each kiosk via an application programming interface and a software development kit; a plurality of client, operator and manager interfaces; and means for producing in-house and client-created content. Each kiosk comprising a central processing unit; a display window having a recessed touchscreen optic; a camera; a microphone; a speaker; a plurality of communications means, wherein the central processing unit is operable to download content from the central server, to display the downloaded content, to mediate interaction between the kiosk and a consumers' touch, voice and other inputs, and to compile and send feedback and performance information to the central server. | 06-21-2012 |
Dimitar Trifonov Trifonov, Vail, AZ US
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20130207168 | PHOTODIODE EMPLOYING SURFACE GRATING TO ENHANCE SENSITIVITY - A semiconductor device contains a photodiode formed in a substrate of the semiconductor device. At a top surface of the substrate, over the photodiode, a surface grating of periodic field oxide in a periodic configuration and/or gate structures in a periodic configuration is formed. The field oxide may be formed using an STI process or a LOCOS process. A semiconductor device with a surface grating including both field oxide and gate structures has the gate structures over the semiconductor substrate, between the field oxide. The surface grating has a pitch length up to 3 microns. The surface grating covers at least half of the photodiode. | 08-15-2013 |
20130207210 | LOW-CAPACITANCE PHOTODIODE UTILIZING VERTICAL CARRIER CONFINEMENT - A semiconductor device contains a photodiode which includes a buried collection region formed by a bandgap well to vertically confine photo-generated minority carriers. the bandgap well has the same conductivity as the semiconductor material immediately above and below the bandgap well. A net average doping density in the bandgap well is at least a factor of ten less than net average doping densities immediately above and below the bandgap well. A node of the photodiode, either the anode or the cathode, is connected to the buried collection region to collect the minority carriers, the polarity of the node matches the polarity of the minority carriers. The photodiode node connected to the buried collection region occupies less lateral area than the lateral area of the buried collection region. | 08-15-2013 |
20130207211 | WAVELENGTH SENSITIVE PHOTODIODE EMPLOYING SHORTED JUNCTION - A semiconductor device contains a photodiode which has a plurality of p-n junctions disposed in a stack. Two contact structures on the semiconductor device are connected across at least one of the junctions to allow electrical connection to an external detection circuit, so that signal current from incident light on the photodiode which generates electron-hole pairs across the connected junction may be sensed by the external detection circuit. At least one of the junctions is electrically shorted at the semiconductor device, so that signal current from the shorted junction may not be sensed by the external detection circuit. | 08-15-2013 |
Dimitar V. Trifonov, Vail, AZ US
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20110241155 | SEMICONDUCTOR THERMOCOUPLE AND SENSOR - Conventional “on-chip” or monolithically integrated thermocouples are very mechanically sensitive and are expensive to manufacture. Here, however, thermocouples are provided that employ different thicknesses of thermal insulators to help create thermal differentials within an integrated circuit. By using these thermal insulators, standard manufacturing processes can be used to lower cost, and the mechanical sensitivity of the thermocouple is greatly decreased. Additionally, other features (which can be included through the use of standard manufacturing processes) to help trap and dissipate heat appropriately. | 10-06-2011 |
20130040413 | SEMICONDUCTOR THERMOCOUPLE AND SENSOR - Conventional “on-chip” or monolithically integrated thermocouples are very mechanically sensitive and are expensive to manufacture. Here, however, thermocouples are provided that employ different thicknesses of thermal insulators to help create thermal differentials within an integrated circuit. By using these thermal insulators, standard manufacturing processes can be used to lower cost, and the mechanical sensitivity of the thermocouple is greatly decreased. Additionally, other features (which can be included through the use of standard manufacturing processes) to help trap and dissipate heat appropriately. | 02-14-2013 |
Georgy Trifonov, Bellevue, WA US
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20100250331 | EVALUATING THE QUALITY OF WEB-BASED PROPERTIES - Methods, systems, and media are provided for evaluating the quality of web-based properties for use as hosts of advertisements. Properties are automatically and dynamically evaluated for appropriateness of content, for instance, based upon extracted keywords and/or contextual information categories. Upon submission of an advertisement request, properties determined to be of insufficient quality are served a neutral advertisement, served a message indicating that no advertisement will be served, or served nothing at all. Advertisements determined upon submission of an advertisement request to be of sufficient quality are served one or more non-neutral advertisements as requested. | 09-30-2010 |
Latchezar Trifonov, Montreal CA
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20080305508 | Methods of screening for compounds that modulate TAFIa activity, compounds, and methods of using the compounds - Provided are methods of screening compounds for any aspirin-related activity other than TAFI inhibition, and also for non-inhibition of TAFI. Compounds identified by the screening methods can be used to treat, prevent or manage in a patient pain, fever, colon cancer, pancreatic cancer or an inflammatory, platelet aggregation, fibrinolytic or hemorrhagic disease or disorder. Also provided is a method of evaluating test compounds for TAFI inhibitory activity wherein the TAFI inhibitory activity of these test compounds is compared to the TAFI inhibitory activity of aspirin or its derivatives or metabolites. Further provided is a method of treating, preventing or managing in a patient, a hemorrhagic or thrombotic disease or disorder with high dose aspirin or aspirin derivatives or metabolites. Also contemplated is a method of treating, preventing or managing in a patient, pain, fever, colon cancer, pancreatic cancer or an inflammatory, platelet aggregation, fibrinolytic or hemorrhagic disease or disorder comprising administering aspirin or a derivative thereof or any other therapeutic having at least one desired therapeutic or prophylactic activity of aspirin to a patient in need thereof and administering to the patient a factor that promotes TAFIa activity, e.g. stabilized TAFIa, to ameliorate one or more adverse side effects of the therapeutic. Compounds identified by the methods of the invention are also provided. | 12-11-2008 |
20100310540 | METHODS OF SCREENING FOR COMPOUNDS THAT MODULATE TAFIA ACTIVITY, COMPOUNDS, AND METHODS OF USING THE COMPOUNDS - Provided are methods of screening compounds for any aspirin-related activity other than TAFI inhibition, and also for non-inhibition of TAFI. Compounds identified by the screening methods can be used to treat, prevent or manage in a patient pain, fever, colon cancer, pancreatic cancer or an inflammatory, platelet aggregation, fibrinolytic or hemorrhagic disease or disorder. Also provided is a method of evaluating test compounds for TAFI inhibitory activity wherein the TAFI inhibitory activity of these test compounds is compared to the TAFI inhibitory activity of aspirin or its derivatives or metabolites. Further provided is a method of treating, preventing or managing in a patient, a hemorrhagic or thrombotic disease or disorder with high dose aspirin or aspirin derivatives or metabolites. Also contemplated is a method of treating, preventing or managing in a patient, pain, fever, colon cancer, pancreatic cancer or an inflammatory, platelet aggregation, fibrinolytic or hemorrhagic disease or disorder comprising administering aspirin or a derivative thereof or any other therapeutic having at least one desired therapeutic or prophylactic activity of aspirin to a patient in need thereof and administering to the patient a factor that promotes TAFIa activity, e.g. stabilized TAFIa, to ameliorate one or more adverse side effects of the therapeutic. Compounds identified by the methods of the invention are also provided. | 12-09-2010 |
Latchezar S. Trifonov, Montreal CA
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20080280920 | Plasminogen Activator Inhibitor-1 Inhibitors - Inhibitors of plasminogen activator inhibitor-1 (PAI-I) are provided, which may also act as anti cancer agents, of formulae (I-V). | 11-13-2008 |