Vrazel
Michael G. Vrazel, Chamblee, GA US
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20110069604 | Method and System for Signal Emulation - A circuit can process a sample of a signal to emulate, simulate, or model an effect on the signal. Thus, an emulation circuit can produce a representation of a real-world signal transformation by processing the signal according to one or more signal processing parameters that are characteristic of the real-world signal transformation. The emulation circuit can apply analog signal processing and/or mixed signal processing to the signal. The signal processing can comprise feeding the signal through two signal paths, each having a different delay, and creating a weighted sum of the outputs of the two signal paths. The signal processing can also (or alternatively) comprise routing the signal through a network of delay elements, wherein a bank of switching or routing elements determines the route and thus the resulting delay. | 03-24-2011 |
Michael G. Vrazel US
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20100197233 | Method and System for Automatic Control in an Interference Cancellation Device - Signals propagating on an aggressor communication channel can cause detrimental interference in a victim communication channel. A signal processing circuit can generate an interference cancellation signal that, when applied to the victim communication channel, cancels the detrimental interference. The signal processing circuit can dynamically adjust or update two or more aspects of the interference cancellation signal, such as an amplitude or gain parameter and a phase or delay parameter. Via the dynamic adjustments, the signal processing circuit can adapt to changing conditions, thereby maintaining an acceptable level of interference cancellation in a fluctuating operating environment. A control circuit that implements the parametric adjustments can have at least two modes of operation, one for adjusting the amplitude parameter and one for adjusting the phase parameter. The modes can be selectable or can be intermittently available, for example. | 08-05-2010 |
Michael G. Vrazel, Atlanta, GA US
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20100039923 | Method and System for Crosstalk Cancellation - Signals propagating in one communication channel can generate crosstalk interference in another communication channel. A crosstalk cancellation device can process the signals causing the crosstalk interference and generate a crosstalk cancellation signal that can compensate for the crosstalk when applied to the channel receiving crosstalk interference. The crosstalk cancellation device can include a model of the crosstalk effect that generates a signal emulating the actual crosstalk both in form an in timing. The crosstalk cancellation device can include a controller that monitors crosstalk-compensated communication signals and adjusts the model to enhance crosstalk cancellation performance. The crosstalk cancellation device can have a mode of self configuration or calibration in which defined test signals can be transmitted on the crosstalk-generating channel and the crosstalk-receiving channel. | 02-18-2010 |
Woodford Leon Vrazel, Danbury, TX US
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20100083940 | CRYOGENIC AIR COOLER FOR IMPROVING POWER AND FUEL EFFICIENCY OF A MOTOR VEHICLE INTERNAL COMBUSTION ENGINE - A cryogenic air condenser is disclosed that pre-cools and thereby condenses air before it enters an internal combustion engine of a vehicle, allowing more fuel to be burned during each combustion cycle and enhancing the power of the engine without placing any drag on the engine. The air is cooled by making thermal contact with a cryogenic liquid, such as liquid nitrogen, liquid air, or liquid helium. For example, the air can flow through pipes surrounded by cryogenic liquid, or air can flow past pipes filled with cryogenic liquid. Cooling of the combustion chamber by the chilled air also allows higher compression ratios without dieseling, and slower burning of the fuel, thereby providing additional enhancements. The cryogenic air condenser requires no modifications to the engine, and can be added to a vehicle after manufacture. Evaporated cryogenic liquid can be vented into the vehicle exhaust, providing Venturi suction for additional cooling. | 04-08-2010 |