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

IPC: H02J50/00 ,  H02J7/00 ,  H02N2/18 ,  H01L35/02 ,  H02J1/10

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.

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.

公开(公告)号：US20190081558A1

公开(公告)日：2019-03-14

申请号：US16039551

申请日：2018-07-19

Applicant: Khalifa University of Science and Technology

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

IPC: H02M3/07

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：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

IPC: A61B3/00 ,  A61B3/12 ,  G06T7/00 ,  G06K9/20 ,  G06K9/46

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.

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

IPC: H02J4/00 ,  H01L35/02 ,  H02N2/18

CPC classification number: H02J4/00 ,  H01L35/02 ,  H02N2/181

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.

公开(公告)号：US09717438B2

公开(公告)日：2017-08-01

申请号：US14926483

申请日：2015-10-29

Applicant: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Nourhan Yahya Bayasi ,  Temesghen Tekeste Habte ,  Hani Hasan Mustafa Saleh ,  Ahsan Habib Khandoker ,  Mohammed Ismail Elnaggar

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

CPC classification number: A61B5/0468 ,  A61B5/02405 ,  A61B5/0245 ,  A61B5/04012 ,  A61B5/0402 ,  A61B5/0428 ,  A61B5/0456 ,  A61B5/0464 ,  A61B5/7264

Abstract: A medical device and method for detecting a ventricular arrhythmia event is disclosed. The medical device includes input circuitry configured to receive an electrocardiogram (ECG) signal, processing circuitry coupled to the input circuitry and configured to identify at least one fiducial point of a first heartbeat signature and at least fiducial point of a second heartbeat signature of the ECG signal, and feature extraction circuitry coupled to the processing circuitry. The feature extraction circuitry is configured to determine at least one difference between the at least one fiducial point of the first heartbeat signal and the at least one fiducial point of the second heartbeat signal. Machine learning circuitry is coupled to the feature extraction circuitry and is configured to select a ventricular arrhythmia class based on the at least one difference.