公开(公告)号：US10651730B2

公开(公告)日：2020-05-12

申请号：US16039551

申请日：2018-07-19

Applicant: Khalifa University of Science and Technology

Inventor： Dima Kilani ,  Baker Mohammad ,  Mohammad Radwan Alhawari ,  Hani Hasan Mustafa Saleh ,  Mohammed Ismail Elnaggar

IPC: H02M3/07 ,  H02M1/00

Abstract: A switched capacitor DC-DC converter, which includes a pulse frequency modulation circuit, a multiplexing pulse-width modulation circuit, and a switched capacitive element, is disclosed. The switched capacitive element is coupled between the pulse frequency modulation circuit and the multiplexing pulse-width modulation circuit. The pulse frequency modulation circuit uses a DC source signal to charge the switched capacitive element. The pulse frequency modulation circuit provides a group of output signals by multiplexing the switched capacitive element and reduces reverse current to the switched capacitive element when updating each of the group of output signals.

公开(公告)号：US20190132602A1

公开(公告)日：2019-05-02

申请号：US16174060

申请日：2018-10-29

Applicant: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yasmin Halawani ,  Baker Mohammad ,  Mahmoud Al-Qutayri

IPC: H04N19/423 ,  H04N19/635

Abstract: Data compression using a memristive crossbar is enabled. Conductances of memristors may be set such that the memristors of the crossbar act as coefficients of a wavelet transformation coefficient matrix with respect to voltage signals applied to input rows of the crossbar. The memristors may act as coefficients of the transpose of the wavelet transformation coefficient matrix when voltage signals are applied to input columns of the crossbar. Hence, the memristive crossbar may be used to implement a two dimensional (2D) discrete wavelet transform (DWT) on two dimensional data (e.g., image data) encoded in the voltage signals. The resulting currents in the columns of the memristive crossbar may be integrated and converted to voltage signals that are fed back into columns of the memristive crossbar such that the rows of the memristive crossbar output electronic signals that correspond to the image data compressed in accordance with Haar 2D-DWT image compression.

公开(公告)号：US20190081560A1

公开(公告)日：2019-03-14

申请号：US16102925

申请日：2018-08-14

Applicant: Khalifa University of Science and Technology

Inventor： Abdulqader Nael Mahmoud ,  Mohammad Radwan Alhawari ,  Baker Mohammad ,  Hani Hasan Mustafa Saleh ,  Mohammed Ismail Elnaggar

IPC: H02M3/07

CPC classification number: H02M3/07 ,  H02M2001/0041 ,  H02M2001/009 ,  H02M2003/077 ,  H03L7/0891 ,  H03L7/0895

Abstract: A two dimensional charge pump and control circuitry is disclosed. The two dimensional charge pump includes a group of parallel-coupled charge pumps coupled between a DC power source and a first output connection node via a corresponding group of charge pump connection nodes. The group of parallel-coupled charge pumps has a corresponding group of clock connection nodes. Each of the group of parallel-coupled charge pumps includes a corresponding group of series capacitive elements coupled between a corresponding one of the group of charge pump connection nodes and a corresponding one of the group of clock connection nodes.

公开(公告)号：US10194821B2

公开(公告)日：2019-02-05

申请号：US14926554

申请日：2015-10-29

Applicant: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Temesghen Tekeste Habte ,  Nourhan Yahya Bayasi ,  Hani Hasan Mustafa Saleh ,  Ahsan Habib Khandoker ,  Baker Mohammad ,  Mahmoud Al-Qutayri ,  Mohammed Ismail Elnaggar

IPC: A61B5/0456 ,  A61B5/0468 ,  A61B5/0428 ,  A61B5/0245 ,  A61B5/00 ,  A61B5/04 ,  A61B5/0464 ,  A61B5/024 ,  A61B5/0402

Abstract: A medical device having automated electrocardiogram (ECG) feature extraction is disclosed. The medical device includes input circuitry configured to receive an ECG signal. Processing circuitry coupled to the input circuitry is configured to identify at least one fiducial point of heartbeat signature of the ECG signal. The processing circuitry is further configured to perform substantially simultaneously both a discrete wavelet transform (DWT) and a curve length transform (CLT) to identify the at least one fiducial point.

公开(公告)号：US12247942B2

公开(公告)日：2025-03-11

申请号：US17058485

申请日：2019-06-03

Applicant: Khalifa University of Science and Technology

Inventor： Heba Abunahla ,  Baker Mohammad ,  Anas Alazzam ,  Maguy Abi Jaoude ,  Mahmoud Al-Qutayri

IPC: G01N27/327 ,  G01N33/49 ,  G01N33/66

Abstract: A glucose sensor includes an insulating metal oxide layer and at least one pair of metallic electrodes arranged on the insulating metal oxide layer and separated by a gap containing the metal oxide layer. In operation, a probe including a voltage supply and current sensor can provide a voltage difference across the first and second metallic electrodes while a sample is present across the gap between the electrodes. A measured current between the first and second metallic electrodes when the voltage difference is provided can be correlated to a glucose level of the sample.

公开(公告)号：US11480695B2

公开(公告)日：2022-10-25

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

IPC: G01T1/24 ,  G01T1/02 ,  G01T1/17 ,  H01L45/00

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.

公开(公告)号：US11105937B2

公开(公告)日：2021-08-31

申请号：US16067534

申请日：2016-12-30

Applicant: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Baker Mohammad ,  Maguy Abi Jaoude ,  Heba Abunahla ,  Mahmoud Al-Qutayri ,  Curtis O'Kelly

IPC: G01T1/24 ,  G01T1/02 ,  G01T1/17 ,  H01L45/00

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.

公开(公告)号：US10735753B2

公开(公告)日：2020-08-04

申请号：US16174060

申请日：2018-10-29

Applicant: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Yasmin Halawani ,  Baker Mohammad ,  Mahmoud Al-Qutayri

IPC: H04N19/423 ,  H04N19/635 ,  G11C13/00 ,  G11C11/56

Abstract: Data compression using a memristive crossbar is enabled. Conductances of memristors may be set such that the memristors of the crossbar act as coefficients of a wavelet transformation coefficient matrix with respect to voltage signals applied to input rows of the crossbar. The memristors may act as coefficients of the transpose of the wavelet transformation coefficient matrix when voltage signals are applied to input columns of the crossbar. Hence, the memristive crossbar may be used to implement a two dimensional (2D) discrete wavelet transform (DWT) on two dimensional data (e.g., image data) encoded in the voltage signals. The resulting currents in the columns of the memristive crossbar may be integrated and converted to voltage signals that are fed back into columns of the memristive crossbar such that the rows of the memristive crossbar output electronic signals that correspond to the image data compressed in accordance with Haar 2D-DWT image compression.

公开(公告)号：US10666136B2

公开(公告)日：2020-05-26

申请号：US16102925

申请日：2018-08-14

Applicant: Khalifa University of Science and Technology

Inventor： Abdulqader Nael Mahmoud ,  Mohammad Radwan Alhawari ,  Baker Mohammad ,  Hani Hasan Mustafa Saleh ,  Mohammed Ismail Elnaggar

IPC: H02M3/07 ,  H03L7/089 ,  H02M1/00

Abstract: A two dimensional charge pump and control circuitry is disclosed. The two dimensional charge pump includes a group of parallel-coupled charge pumps coupled between a DC power source and a first output connection node via a corresponding group of charge pump connection nodes. The group of parallel-coupled charge pumps has a corresponding group of clock connection nodes. Each of the group of parallel-coupled charge pumps includes a corresponding group of series capacitive elements coupled between a corresponding one of the group of charge pump connection nodes and a corresponding one of the group of clock connection nodes.

公开(公告)号：US10456027B2

公开(公告)日：2019-10-29

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

IPC: A61B3/00 ,  A61B3/12 ,  G06T7/00 ,  G06T7/60 ,  G06T7/62

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.