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公开(公告)号：US12216026B2
公开(公告)日：2025-02-04
申请号：US17840335
申请日：2022-06-14
Applicant: Khalifa University of Science and Technology
Inventor： Baker Mohammad , Khaled Muneer Mutlaq Humood , Maguy Abi Jaoude , Sueda Saylan
Abstract: Techniques for measuring vacuum pressure using a memristor element are described. A vacuum sensor can include a memristor element having a semiconductor substrate, a memristive material layer, and a conductive electrode. The off-state resistance of the memristor element can be sensitive to changes in ambient pressure at the element. The off-state resistance of the memristor element may also exhibit a well-defined increase at pressures below a threshold pressure. Measurement of the off-state resistance may be obtained with low power consumption and without changing the resistance or switching the state of the memristor element. The measurements may be used to both determine a leak rate of the ambient pressure within the volume of interest and determine if the sensor is exposed to vacuum pressure below the threshold pressure.
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公开(公告)号：US20210341634A1
公开(公告)日：2021-11-04
申请号：US17377219
申请日：2021-07-15
Applicant: Khalifa University of Science and Technology
Inventor： Baker Mohammad , Maguy Abi Jaoude , Heba Abunahla , Mahmoud Al-Qutayri , Curtis O'Kelly
Abstract: Devices, systems, and methods of using one or more memristors as a radiation sensor are enabled. A memristor can be attractive as a sensor due to its passive low power characteristics. Medical and environment monitoring are contemplated use cases. Sensing radiation as part of a security system (at an airport for example) and screening food for radiation exposure are also possible uses. The memristor as a radiation sensor may possibly provide an inexpensive and easy alternative to personal thermoluminescent dosimeters (TLD). Memristor devices with high current and low power operation may be attached with wearable plastic substrates. An example device includes two metal strips with a 50 μm thick layer of TiO2 memristor material. The device may be made large relative to traditional memristors which are nanometers in scale but its increased thickness can significantly increase the probability of radiation interaction with the memristor material.
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公开(公告)号：US10819149B2
公开(公告)日：2020-10-27
申请号：US15950804
申请日：2018-04-11
Applicant: Khalifa University of Science and Technology
Inventor： Mohammad Radwan Alhawari , Baker Mohammad , Hani Hasan Mustafa Saleh , Mohammed Ismail Elnaggar
Abstract: Disclosed is an energy mixer having a first active diode coupled between a first input node and an output node, and a second active diode coupled between a second input node and the output node. A first capacitor is coupled between the first input node and a dynamic node, and a second capacitor is coupled between the second input node and a third node. Switching circuitry is configured to selectively couple the dynamic node between a fixed voltage node and the second input node in response to a control signal provided by control circuitry. When an output voltage at the output node is within a first range, the dynamic node is coupled to the fixed voltage node and when the output voltage is within a lower voltage second range, the dynamic node is coupled to the second input node such that first capacitor and second capacitor are coupled in series.
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公开(公告)号：US20190090773A1
公开(公告)日：2019-03-28
申请号：US15716964
申请日：2017-09-27
Applicant: Khalifa University of Science and Technology
Inventor： Hamza Yacoub Al Maharmeh , Hani Hasan Mustafa Saleh , Baker Mohammad , Mohammed Ismail Elnaggar , Mahmoud Al-Qutayri
IPC: A61B5/0468 , A61B5/0245 , A61B5/04 , A61B5/0428
Abstract: An electrocardiogram (ECG) processor is disclosed. The ECG processor includes ECG sampling circuitry configured in a first mode to acquire a continuous ECG sample set from an ECG signal by digitally sampling the ECG signal at a Nyquist rate for a first predetermined number of heartbeats and in a second mode to acquire a non-continuous ECG sample set from the ECG signal for a second predetermined number of heartbeats by digitally sampling active regions of the ECG signal that contain a PQRST complex and not from silent regions between adjacent PQRST complexes. The ECG processor also includes processing circuitry configured to determine from the continuous ECG sample set relative locations of the active regions and provide the relative locations of the active regions to the ECG sampling circuitry for sampling the ECG signal in the second mode.
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公开(公告)号：US20180310817A1
公开(公告)日：2018-11-01
申请号：US15497302
申请日：2017-04-26
Applicant: Khalifa University of Science and Technology
Inventor： Ehab Najeh Salahat , Hani Hasan Mustafa Saleh , Andrzej Stefan Sluzek , Mahmoud Al-Qutayri , Baker Mohammad , Mohammed Ismail Elnaggar
CPC classification number: A61B3/0025 , A61B3/0041 , A61B3/12 , G06K2209/05 , G06T7/0012 , G06T7/60 , G06T7/62 , G06T2207/30041 , G06T2207/30101
Abstract: Architecture and a method for maximally stable extremal regions (MSERs)-based detection of exudates in an ocular fundus is disclosed. The architecture includes a communication interface to receive pixels of an ocular fundus image. The architecture further includes processing circuitry that is coupled to the communication interface. The processing circuitry is configured to automatically provide labels for light image regions and dark image regions within the ocular fundus image for a given intensity threshold and find MSERs within the ocular fundus image based on the labels. The architecture also determines MSER regions based on the MSER criteria and then highlights the pixels of the ocular fundus image that are located within MSER regions to indicate the exudates in the ocular fundus. The architecture is further configured to determine MSER ellipses parameters based on MSER regions and MSER criteria and then highlight the locations of the exudates in the ocular fundus.
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Patent Agency Ranking
公开(公告)号：US09973007B2
公开(公告)日：2018-05-15
申请号：US15184319
申请日：2016-06-16
Applicant: Khalifa University of Science and Technology
Inventor： Mohammad Radwan Alhawari , Baker Mohammad , Hani Hasan Mustafa Saleh , Mohammed Ismail Elnaggar
Abstract: Disclosed is an energy mixer having a first active diode coupled between a first input node and an output node, and a second active diode coupled between a second input node and the output node. A first capacitor is coupled between the first input node and a dynamic node, and a second capacitor is coupled between the second input node and a third node. Switching circuitry is configured to selectively couple the dynamic node between a fixed voltage node and the second input node in response to a control signal provided by control circuitry. When an output voltage at the output node is within a first range, the dynamic node is coupled to the fixed voltage node and when the output voltage is within a lower voltage second range, the dynamic node is coupled to the second input node such that first capacitor and second capacitor are coupled in series.
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公开(公告)号：US12292753B2
公开(公告)日：2025-05-06
申请号：US17782562
申请日：2020-12-04
Applicant: Khalifa University of Science and Technology
Inventor： Baker Mohammad , Dima Kilani , Hani Saleh
IPC: G05F1/59 , G05F1/46 , G05F1/575 , H03K19/094
Abstract: Digital logic voltage regulators and related methods generate a regulated voltage via controlled switching of a power transistor. A digital logic voltage regulator includes a voltage level comparator, a power transistor, and a charge accumulator. The voltage level comparator generates a digital control signal that alternates between a first voltage level and a second voltage level in response to changes in relative voltage level between the regulated output voltage and the target voltage. The digital control signal causes the power transistor to switch from off to on in response to a reduction of the regulated output voltage relative to the target voltage and causes the power transistor to switch from on to off in response to an increase of the regulated output voltage relative to the target voltage. The charge accumulator decreases variation in the regulated output voltage that would occur without the charge accumulator.
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公开(公告)号：US11051747B2
公开(公告)日：2021-07-06
申请号：US15716964
申请日：2017-09-27
Applicant: Khalifa University of Science and Technology
Inventor： Hamza Yacoub Al Maharmeh , Hani Hasan Mustafa Saleh , Baker Mohammad , Mohammed Ismail Elnaggar , Mahmoud Al-Qutayri
Abstract: An electrocardiogram (ECG) processor is disclosed. The ECG processor includes ECG sampling circuitry configured in a first mode to acquire a continuous ECG sample set from an ECG signal by digitally sampling the ECG signal at a Nyquist rate for a first predetermined number of heartbeats and in a second mode to acquire a non-continuous ECG sample set from the ECG signal for a second predetermined number of heartbeats by digitally sampling active regions of the ECG signal that contain a PQRST complex and not from silent regions between adjacent PQRST complexes. The ECG processor also includes processing circuitry configured to determine from the continuous ECG sample set relative locations of the active regions and provide the relative locations of the active regions to the ECG sampling circuitry for sampling the ECG signal in the second mode.
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公开(公告)号：US20170366012A1
公开(公告)日：2017-12-21
申请号：US15184319
申请日：2016-06-16
Applicant: Khalifa University of Science and Technology
Inventor： Mohammad Radwan Alhawari , Baker Mohammad , Hani Hasan Mustafa Saleh , Mohammed Ismail Elnaggar
Abstract: Disclosed is an energy mixer having a first active diode coupled between a first input node and an output node, and a second active diode coupled between a second input node and the output node. A first capacitor is coupled between the first input node and a dynamic node, and a second capacitor is coupled between the second input node and a third node. Switching circuitry is configured to selectively couple the dynamic node between a fixed voltage node and the second input node in response to a control signal provided by control circuitry. When an output voltage at the output node is within a first range, the dynamic node is coupled to the fixed voltage node and when the output voltage is within a lower voltage second range, the dynamic node is coupled to the second input node such that first capacitor and second capacitor are coupled in series.
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公开(公告)号：US20210384425A1
公开(公告)日：2021-12-09
申请号：US17288306
申请日：2019-10-29
Applicant: Khalifa University of Science and Technology
Inventor： Anas Alazzam , Heba Abunahla , Baker Mohammad
IPC: H01L45/00
Abstract: There is provided a planar graphene oxide (GO)-based device comprising of multiple resistance state elements in response to an applied voltage and wherein the multiple resistance state elements mimic neural synapse behaviour. The device has multiple application potentials including but not limited to non-volatile electronic memory, sensors, computing for Artificial intelligence (AI) and security. Also disclosed is method of manufacturing a memristor microdevice comprising the steps of patterning metal layer and graphene oxide or reduced graphene oxide thin films on different substrates and producing reduced graphene oxide (rGO) thin film through reduction of the graphene oxide layer. Fabricating thin films of graphene oxide and reduced graphene oxide in the microdevice from an aqueous solution of graphene oxide, results in making the process simple, cost effective, and suitable for mass production of the microdevice.
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