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Alexandrov, US
Albert Alexandrov, Goleta, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100124321 | System and method for dynamic audio conference call configuration and management - A new approach is proposed that contemplates audio conference systems and methods to expand the capacity a conference call by utilizing both a mixing engine that enables a first group participants to be able to both listen to and speak at the conference call, and a broadcast engine that broadcasts the conference call to a second group of participants who are only interested in listening to, but not speaking at the conference call. During the conference call, participants at the mixing engine and the broadcast engine can be dynamically adjusted. | 05-20-2010 |
| 20100262267 | Systems and methods for computer and voice conference audio transmission during conference call via PSTN phone - A new approach is proposed that contemplates systems and methods to support canceling audio streams leaked from a speaker to a PSTN so that only the audio stream of a presenter or viewer speaking at a conference call is transmitted. Here, the audio streams being canceled includes the audio stream of an application being run or a material being presented online during a web conference. The voice audio stream of a presenter or viewer is then transmitted in addition to the computer audio stream, clean from any other audio stream of echoes or feedbacks captured by the hosting device during the conference call. | 10-14-2010 |
| 20100262268 | Systems and methods for computer and voice conference audio transmission during conference call via VOIP device - A new approach is proposed that contemplates systems and methods to support canceling audio streams leaked from a speaker to a microphone so that a clean audio stream of a presenter or viewer speaking at a conference call is transmitted. Here, the audio streams being canceled includes the computer audio stream of an application being run or a material being presented online during a web conference and/or the audio stream received from the rest of the group of participants at the conference call. The computer audio stream is then transmitted in addition to the presenter or viewer audio stream, and separate from any other audio stream captured by the hosting device during the conference call. | 10-14-2010 |
| 20100262656 | Systems and methods for computer and voice conference audio transmission during conference call via VoIP device - A new approach is proposed that contemplates systems and methods to support canceling audio streams leaked from a speaker to a microphone so that a clean audio stream of a presenter or viewer speaking at a conference call is transmitted. Here, the audio streams being canceled includes the computer audio stream of an application being run or a material being presented online during a web conference and/or the audio stream received from the rest of the group of participants at the conference call. The computer audio stream is then transmitted in addition to the presenter or viewer audio stream, and separate from any other audio stream captured by the hosting device during the conference call. | 10-14-2010 |
| 20110019810 | Systems and methods for switching between computer and presenter audio transmission during conference call - A new approach is proposed that contemplates systems and methods to support switching between computer audio and presenter audio during a conference call so that one and only one, not both, of the two audio streams is being transmitted to the rest of the conference at any time. More specifically, a switch engine is adopted, which separately takes one or more audio streams captured by a sound mixing component of the hosting device of a presenter and by a microphone attached to the hosting device as its two inputs, and outputs only one of the two inputs at any time. The selected audio output is then processed and transmitted to the rest of the conference with feedback from other audio sources canceled. | 01-27-2011 |
| 20110150433 | Systems and methods for video-aware screen capture and compression - A new approach is proposed that contemplates systems and methods to support video-aware screen capture and compression. More specifically, the video-aware approach first detects whether or when video content is being actively played back on a screen of a hosting device. If the video content is actively being rendered, the approach separates (segments) the screen content into static (non-video) content and video content, The approach then applies video-specific capture and compression methods to the video content of the screen and other suitable compression methods to the non-video content of the screen. The compressed static and video content of the screen are separately and independently transmitted across the network to remote computing devices and are then decompressed and processed to reconstruct screen of its original content for display at the screens of the remote computing devices. | 06-23-2011 |
Albert Alexandrov, Santa Barbara, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100146124 | METHODS AND APPARATUS FOR SYNCHRONIZATION OF DATA SET REPRESENTATIONS IN A BANDWIDTH-ADAPTIVE MANNER - A bandwidth-adaptive method for synchronizing a consumer node representation of a dynamic data set and the source node representation of the dynamic data includes the step of receiving, from a source node, metadata information identifying a plurality of data packets that represent a state of at least a portion of a changing data set at a point in time. At least one of the identified data packets is received from the source node and at least one of the received data packets is selected responsive to the received meta-data information. The metadata information and the selected at least one data packet are transmitted to a consumer node. | 06-10-2010 |
Boian Todorov Alexandrov, Upper Arlington, OH US
| Patent application number | Description | Published |
|---|---|---|
| 20090119057 | METHOD AND DEVICE FOR INVESTIGATION OF PHASE TRANSFORMATIONS IN METALS AND ALLOYS - A device and method for investigating phase transformation properties and structural changes of materials. In one form, the device simulates actual thermal processing conditions, while the method can be used in both simulations as well as in actual processing conditions. An analysis using at least one of the device and method is referred to as a single sensor differential thermal analysis, as it compares the temperature recorded in a measured specimen against a reference thermal history without requiring the derivation of the reference thermal history from measured reference temperatures. | 05-07-2009 |
Felix I. Alexandrov, Bedford, MA US
| Patent application number | Description | Published |
|---|---|---|
| 20090033236 | Programmed ballast with resonant inverter and method for discharge lamps - A ballast having a rapid inverter frequency control circuit that is used for programmed operation during lamps starting, during normal operation of all lamps and during no lamp(s) operation. A method and circuit controls frequency shift via a combination of different feedback circuits. A control signal for the inverter controller is synthesized as a sum of phase shifted inverter output voltage feedback signal and lamp current sense signal indicating status of each lamp connected to the ballast output. | 02-05-2009 |
| 20090302775 | MULTI-LAMPS INSTANT START ELECTRONIC BALLAST - The electronic ballast comprises a series half bridge resonant inverter and a control circuit for the inverter with dimming capability. The inverter includes a first and a second voltage feedback circuits including first and a second charge pumps coupled in between inverter output and the dimming input of the control circuit. The feedback circuits generate a reference control signal to control operation after starting and an error control signals when the inverter output voltage exceeds a predetermined value. | 12-10-2009 |
| 20110043122 | Resonant Inverter With Sleep Circuit - A sleep circuit for use in a resonant inverter is disclosed. The sleep circuit activates a “sleep mode” (non-continuous operation) when the inverter output has no connected load, or a connected load is non-operative (e.g., fails). The “sleep mode” utilizes hysteresis control via the under voltage lockout protection feature of a control IC of the inverter. A primary DC source permanently connects to the Vcc pin of the control IC for startup (on) and burst (non-continuous) operation modes. An auxiliary DC source connects to the Vcc pin via a switch for continuous operation mode. A load current sensor controls the switch. When a sensed output current is above a threshold level, the switch connects the auxiliary DC source, and the control IC (and the inverter) operates continuously. When the sensed output current falls below the threshold, the auxiliary DC source is not provided and the inverter operates in “sleep mode”. | 02-24-2011 |
Igor Alexandrov, New York, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20080258062 | Infrared Wavelength Converter for Imaging Applications Based On Quantum Well Devices - A mid-infrared (MIR) and/or far-infrared (FIR) to near-infrared (NIR) converter ( | 10-23-2008 |
Natalia Alexandrov, Hampton, VA US
| Patent application number | Description | Published |
|---|---|---|
| 20110166836 | FAST TRACKING METHODS AND SYSTEMS FOR AIR TRAFFRIC MODELING USING A MONOTONIC LAGRANGIAN GRID - Computer implemented methods and systems using a multidimensional Monotonic Lagrangian Grid (MLG) to sort and order locations of aircraft, are used for simulating, controlling, and optimizing aircraft traffic systems. The MLG is combined with algorithms for collision detection and resolution, separation assurance, and updating aircraft trajectories, and applied to test cases of the air transportation system. Physical locations describing aircraft traffic moving in complex paths are stored into a data structure of the multidimensional MLG algorithm. The moving aircraft traffic platforms are sorted and ordered on a grid structure in real space and in an indexing space, causing a monotonic mapping between indices of the grid structure and locations describing the plurality of moving aircraft. Computer operations using data stored in the multidimensional MLG determine control strategies for aircraft separation assurance and optimum routes to circumvent blockages in transport paths. | 07-07-2011 |