Hamdan, US
Fadi A. Hamdan, Raleigh, NC US
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20120065955 | Modeling Output Delay of a Clocked Storage Element(s) - Methods, apparatuses, systems, and computer-readable mediums for modeling output delay of a clocked storage element(s) are disclosed. An output delay model is employed that includes variations in the output delays for the clocked storage element over an operating range of the clocked storage element, including during transitions from transparent operation to non-transparent operation, and vice versa. Errors in the model output delay are reduced or avoided as a result. In one embodiment, the model output delay is determined for the clocked storage element as a function of the differential timing between the arrival time of a clock signal and input data to the clocked storage element. The differential timing allows determination of a model output delay from a plurality of model output delays representing a model output delay curve for the clocked storage element. Time borrowing can also be modeled automatically without the need for a second output delay model. | 03-15-2012 |
Fadi A. Hamdan, Austin, TX US
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20140201494 | OVERLAP CHECKING FOR A TRANSLATION LOOKASIDE BUFFER (TLB) - An apparatus includes a translation lookaside buffer (TLB). The TLB includes at least one entry that includes an entry virtual address and an entry page size indication corresponding to an entry page. The apparatus also includes input logic configured to receive an input page size indication and an input virtual address corresponding to an input page. The apparatus further includes overlap checking logic configured to determine, based at least in part on the entry page size indication and the input page size indication, whether the input page overlaps the entry page. | 07-17-2014 |
Fadi Adel Hamdan, Austin, TX US
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20120112813 | Latch Circuits with Synchronous Data Loading and Self-Timed Asynchronous Data Capture - A latch integrated circuit has synchronous data loading and self-timed asynchronous data capture characteristics. The integrated circuit may include a latch, a pulse generator and a comparator. The latch can be responsive to a data signal and a write enable signal. The pulse generator may be configured to generate the write enable signal as a pulse. This pulse may have a leading edge synchronized with a first edge of a clock signal and a self-timed trailing edge synchronized with an edge of a comparison signal. The comparator may be configured to generate the comparison signal in response to comparing logic levels of at least two nodes within the integrated circuit. | 05-10-2012 |
Fadi Adel Hamdan, Raleigh, NC US
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20090015321 | Circuit having a Local Power Block for Leakage Reduction - A circuit having a local power block for leakage reduction is disclosed. The circuit has a first portion and a second portion. The first portion is configured to operate at a substantially greater operating frequency than the operating frequency of the second portion. The second portion has a local power block configured to decouple the second portion if the second portion is inactive to reduce leakage current associated with the second portion without sacrificing performance of the first portion. | 01-15-2009 |
20100019815 | Circuits and Methods Employing a Local Power Block for Leakage Reduction - A circuit having a local power block for leakage reduction is disclosed. The circuit has a first portion and a second portion. The first portion is configured to operate at a substantially greater operating frequency than the operating frequency of the second portion. The second portion has a local power block configured to decouple the second portion if the second portion is inactive to reduce leakage current associated with the second portion without sacrificing performance of the first portion. | 01-28-2010 |
Fadi Adel Hamdan, Cary, NC US
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20130033292 | CIRCUITS AND METHODS FOR LATCH-TRACKING PULSE GENERATION - Circuits and methods for latch-tracking pulse generation across process, voltage and temperature (PVT) variations are disclosed in one embodiment, the method includes receiving a clock input at a pulse generation circuit and generating a pulse at the pulse generation circuit in response to the clock input. The method further includes distributing the pulse to a mimic latch, which writes a mimic storage node through a mimic storage circuit of the mimic latch in response to the pulse. The method further includes terminating generation of the pulse at the pulse generation circuit in response to a transition of the mimic storage node. The method may include receiving a clock enable input at a pulse control circuit coupled to the pulse generation circuit and either suppressing or allowing generation of a pulse in response to a value of the clock enable input. | 02-07-2013 |
Mahmoud N. Hamdan, Pleasant Prairie, WI US
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20100109879 | Patient Monitoring System and Method - A unitary patient monitoring system ( | 05-06-2010 |
20130245503 | Patient Monitoring System with Unitary Structure and Method - A unitary patient monitoring system ( | 09-19-2013 |
Majed M. Hamdan, North Olmsted, OH US
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20140200761 | BRAKE CHAMBER WITH SENSOR - A brake chamber includes a housing defining a service air brake volume. A diaphragm is associated with a plate that is movably secured within the housing. The diaphragm divides the service air brake volume into a pressure portion and a non.-pressure portion. Respective volumes of the pressure portion and the non-pressure portion change as the diaphragm moves within the housing. A sensor is in the service air brake volume. Electronics, associated with the sensor, determine a position of the plate in the housing. | 07-17-2014 |
Majed M. Hamdan, North Olmstead, OH US
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20140078302 | Backward Movement Indicator Apparatus for a Vehicle - A backward movement indicator apparatus is provided for a vehicle having an alert device. The backward movement indicator apparatus comprises an image capture device arranged to capture image data which is representative of objects in vicinity of the vehicle. The backward movement apparatus further comprises an electronic controller arranged to process the captured image data to provide a signal which is indicative of the vehicle moving backwards. | 03-20-2014 |
Marv Hamdan, North Olmsted, OH US
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20120315151 | CURRENT CONTROL VIA SPEED CONTROL FOR DRIVING SCREW COMPRESSOR UNDER COLD CONDITIONS - When starting a screw-type air compressor in sub-zero conditions, current spikes are mitigated by detecting an over-current condition and/or a below-threshold temperature, and a warm-up routine is initiated in which compressor motor speed is ramped in a sawtooth fashion between two speeds that are substantially lower than a nominal operating speed of the compressor motor. In this manner, the internal components of the compressor are warmed prior to fully starting the compressor, which mitigates current spikes, reduces blown fuses, and extends the life of the compressor motor and other compressor components. | 12-13-2012 |
20120316713 | STATE OF CHARGE ADJUSTED COMPRESSOR CONTROL - The described systems and methods relate to employing an Electric Air Charging System (EACS) to maintain a hybrid commercial vehicle (or the like) battery within a desired range of charge. The innovation facilitates reducing battery charge when the state of charge is too high, such as by adjusting air compressor cut-in and cut-out pressure thresholds to cause the air compressor to compress air for the brake system when there is excess charge in the battery, as well as triggering a brake regeneration protocol and/or other charge regeneration protocol(s) to restore charge to the battery when the state of charge of the battery is too low. | 12-13-2012 |
20130129527 | ROBUST ELECTRIC SCREW COMPRESSOR BLOCKED AIR LINE DETECTION VIA MOTOR CURRENT MONITORING - Systems and methods for detecting a blocked air discharge line of an air compressor are described, which include monitoring motor current (IMTR) drawn by a compressor motor, and calculating a three-point moving average for a steady state current drawn by the compressor motor upon the motor reaching steady state (nominal) operating speed. After expiration of a predetermined time period T | 05-23-2013 |
20130131873 | DETECTION OF BLOCKED AIR LINE FOR ELECTRIC COMPRESSOR AT START UP - Systems and methods for detecting a blocked air discharge line of an air compressor are described, which include monitoring motor current (IMTR) drawn by a compressor motor ( | 05-23-2013 |
Marv M. Hamdan, North Olmsted, OH US
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20100111707 | ROBUST PID CONTROL FOR BLDC MOTOR CONTROLLER - When controlling an air compressor ( | 05-06-2010 |
Mohamed Hussein Hamdan, Salt Lake City, UT US
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20100217342 | METHODS AND SYSTEMS FOR TREATING CARDIAC ARRHYTHMIAS - The disclosure includes methods and systems for treating cardiac arrhythmias. Some methods for treating an abnormal heart rhythm include determining a change in a sinus node cycle length of a heart of a patient between a time prior to the abnormal heart rhythm and a time during the abnormal heart rhythm; when the change is within a first range, delivering a first therapy to the patient for treating the abnormal heart rhythm; and when the change is within a second range, delivering a second therapy to the patient for treating the abnormal heart rhythm, wherein the first therapy is different from the second therapy. In some embodiments, the first therapy may include shock therapy and the second therapy may include anti-tachycardia pacing. | 08-26-2010 |
20100217343 | METHODS AND SYSTEMS FOR TREATING VENTRICULAR ARRHYTHMIAS - The disclosure includes methods and systems for treating ventricular arrhythmias. Embodiments include an implantable cardiac device or system including a determining module that determines a value of a parameter indicative of a rate of an intrinsic pacemaker of a heart of a patient experiencing fast ventricular arrhythmia (FVA) and a delivery module, programmed to deliver therapy for ventricular arrhythmias to a patient. Some methods include determining a value of a parameter indicative of a rate of an intrinsic pacemaker of a heart of a patient experiencing an FVA; if the value indicates the rate is about equal to or higher than a threshold, delivering a first therapy to the patient for terminating the FVA, and if the value indicates the rate is lower than the threshold, delivering a second therapy, different from the first therapy, to the patient for terminating the FVA. | 08-26-2010 |
Monjid Hamdan, Worcester, MA US
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20080282653 | System for modifying the atmosphere within an enclosed space and incubator system including the same - System for modifying the chemical composition of atmosphere within an enclosed space and incubator system including such a system. The concentration of oxygen within the enclosed space may be either increased or decreased using an electrochemical device. The concentration of carbon dioxide within the enclosed space may be increased using an electrochemical or chemical device. As necessary, purging of the system with ambient air can be a part of the process of controlling the chemical composition of the atmosphere. The present invention obviates the need to use pressurized gas cylinders to supply atmospheric gases to the enclosed space. | 11-20-2008 |
20090169952 | Direct organic fuel cell proton exchange membrane and method of manufacturing the same - A proton exchange membrane well-suited for use in a direct methanol fuel cell. According to one embodiment, the proton exchange membrane is prepared by a process comprising the steps of (a) providing a perfluorocarbon membrane, the perfluorocarbon membrane being non-permeable to water; (b) imbibing the perfluorocarbon membrane with a solution containing a styrene monomer, a divinyl benzene cross-linker, and a benzoyl peroxide activator; (c) heating the imbibed membrane to yield a cross-linked polymer within the membrane; (d) repeating the combination of steps (b) and (c) at least once; and (e) then, sulfonating the cross-linked polymer. According to another embodiment, the membrane is irradiated prior to the imbibing step, thereby rendering the membrane receptive to imbibing, polymerization, crosslinking, and grafting and obviating the need for more than one cycle of steps (b) and (c), as well as permitting step (c) to be performed at a lower temperature. | 07-02-2009 |
20110020716 | FUEL CELL SYSTEM INCLUDING GAS RECYCLING AND PRESSURIZING ASSEMBLY - A fuel cell system including a gas recycling and re-pressurizing assembly. In one embodiment, the fuel cell system includes a fuel cell stack, the stack having an oxygen outlet and an oxygen inlet. The fuel cell system additionally includes two gas/water separator tanks, each of the tanks containing a quantity of water and a quantity of oxygen gas. Both tanks are capable of being fluidly connected to either the oxygen inlet or the oxygen outlet of the fuel cell stack. In addition, the two tanks are connected to one another so that water may be transferred back and forth between the two tanks. The system also includes a pump for transferring water back and forth between the tanks. In use, water is pumped from one of the tanks to the other until all of the oxygen gas present within the water-receiving tank is forced out of that tank and is conducted back to the oxygen inlet of the fuel cell stack. Once all of the oxygen gas has been forced out of the water-receiving tank, all of the water that had been present in the water-receiving tank is pumped from that tank to the other tank to expel all of the oxygen that is present in the second tank. As water is pumped out of a tank, the tank receives oxygen from the oxygen outlet of the fuel cell stack. Consequently, this process of moving water back and forth between the tanks to displace the oxygen gas present within the tanks is repeated indefinitely to recycle the oxygen back to the fuel cell stack. | 01-27-2011 |
20110266142 | Unitized electrolyzer apparatus - A unitized electrolyzer apparatus for generating hydrogen gas at high pressure. According to one embodiment, the apparatus includes a pressure-containment vessel, a water electrolyzer stack, and a water supply. The water electrolyzer stack is mounted on or in the vessel and is used to generate hydrogen gas for containment in the vessel at high pressure. The water supply is contained within the vessel, the water supply being fluidly coupled to the water electrolyzer stack to provide a cathode feeding of water to the water electrolyzer stack. | 11-03-2011 |