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El-Maleh, CA

Khaled H. El-Maleh, San Diego, CA US

Patent application numberDescriptionPublished
20090281796ENHANCED CONVERSION OF WIDEBAND SIGNALS TO NARROWBAND SIGNALS - Wideband speech signals must be converted to narrowband speech signals if the transmission medium or the destination terminal is constructed with narrowband constraints. A typical wideband-to-narrowband conversion method is the elimination of frequencies above 3400 Hz using a low pass filter and a down sampler. However, this method produces a muffled speech sound since the resulting narrowband signal has a flat frequency response. Methods and apparatus are presented herein to enhance the acoustic quality of a wideband-to-narrowband converted signal. A bandwidth switching filter is used to emphasize a mid-range frequency portion of the wideband signal so that the resulting narrowband signal has a non-flat frequency spectrum.11-12-2009
20100036668METHOD AND APPARATUS FOR IMPROVED DETECTION OF RATE ERRORS IN VARIABLE RATE RECEIVERS - A system and method for detection of rate determination algorithm errors in variable rate communications system receivers. The disclosed embodiments prevent rate determination algorithm errors from causing audible artifacts such as screeches or beeps. The disclosed system and method detects frames with incorrectly determined data rates and performs frame erasure processing and/or memory state clean up to prevent propagation of distortion across multiple frames. Frames with incorrectly determined data rates are detected by checking illegal rate transitions, reserved bits, validating unused filter type bit combinations and analyzing relationships between fixed code-book gains and linear prediction coefficient gains.02-11-2010

Patent applications by Khaled H. El-Maleh, San Diego, CA US

Khaled Helmi El-Maleh, San Marcos, CA US

Patent application numberDescriptionPublished
20090281799TANDEM-FREE VOCODER OPERATIONS BETWEEN NON-COMPATIBLE COMMUNICATION SYSTEMS - Tandem-free vocoder operations (TFO) between non-compatible communication systems may be enabled through hardware modifications at communication elements within each system. In one aspect, each infrastructure entity in System 1 comprises an intra-system TFO Frame Generator G11-12-2009
20100323616DEVICES FOR CONVEYING WIRELESS POWER AND METHODS OF OPERATION THEREOF - Exemplary embodiments are directed to wireless power. A method may comprise receiving wireless power with a receiver and charging an accumulator with energy from the received wireless power. The method may further include conveying energy from the accumulator to an energy storage device upon a charging level of the accumulator reaching a threshold level.12-23-2010
20110115431SELECTIVE WIRELESS POWER TRANSFER - Exemplary embodiments are directed to selective wireless power transfer. A method may include transferring wireless power to at least one electronic device while varying at least one parameter of the wireless power transfer according to a wireless power transfer scenario.05-19-2011
20110115432POWER MANAGEMENT FOR ELECTRONIC DEVICES - Exemplary embodiments are directed to wireless power management. A method may include detecting one or more wireless chargers for charging an energy storage device of one or more monitored energy storage devices if the energy storage device drops below a threshold value. Moreover, the method may include selecting a charging scheme for an electronic device associated with the energy storage device.05-19-2011
20110119135CONDITION-BASED WIRELESS POWER - Exemplary embodiments are directed to methods and devices for transferring or receiving wireless power. A method may include receiving acceptance of at least one wireless power access entity required condition. The method may further include transferring wireless power to at least one electronic device based on the acceptance of the at least one wireless power access entity required condition.05-19-2011
20110119144AUTHORIZED BASED RECEIPT OF WIRELESS POWER - Exemplary embodiments are directed to methods and devices for fee-based wireless power. A method may include subscribing to a wireless power plan and receiving wireless power at one or more electronic devices according to a wireless power subscription.05-19-2011

Patent applications by Khaled Helmi El-Maleh, San Marcos, CA US