Patents by Inventor Mohammad U. Abbasi

Mohammad U. Abbasi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus and method for tracking and cancelling DC offset to acquire small AC signal
    Patent number: 10568530
    Abstract: Described is an apparatus which comprises: a source to generate a first current having AC and DC components; a current-to-voltage converter to convert the first current or a copy of the first current to a first voltage proportional to a resistance, the first voltage having AC and DC components that correspond to the AC and DC components of the first current; a sample-and-hold circuit to filter the AC component from the first voltage and for providing an output voltage with the DC component; and an amplifier to receive the output voltage.
    Type: Grant
    Filed: June 27, 2015
    Date of Patent: February 25, 2020
    Assignee: Intel Corporation
    Inventors: Craig P. Finlinson, Mohammad U. Abbasi, Nicholas P. Cowley, Mark S. Mudd
  • Apparatus, system, and method for automatic power reduction in photoplethysmography and pulse oximetry systems
    Patent number: 10045721
    Abstract: Systems, apparatuses and methods may provide for a transmit circuit including a light source and a receive circuit including a photodetector and a transimpedance amplifier (TIA) coupled to the photodetector. Additionally, a calibration circuit may be coupled to the transmit circuit and the receive circuit, wherein the calibration circuit includes a current controller to set an operational current of the light source to a minimum value that results in a target output voltage of the receive circuit. In one example, the gain of the TIA remains substantially constant during calibration of the receive circuit.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: August 14, 2018
    Assignee: Intel Corporation
    Inventors: Mohammad U. Abbasi, Sendill K. Gnanaeswaran, Nicholas P. Cowley
  • AUTOMATIC POWER REDUCTION IN PHOTOPLETHYSMOGRAPHY AND PULSE OXIMETRY SYSTEMS
    Publication number: 20170281066
    Abstract: Systems, apparatuses and methods may provide for a transmit circuit including a light source and a receive circuit including a photodetector and a transimpedance amplifier (TIA) coupled to the photodetector. Additionally, a calibration circuit may be coupled to the transmit circuit and the receive circuit, wherein the calibration circuit includes a current controller to set an operational current of the light source to a minimum value that results in a target output voltage of the receive circuit. In one example, the gain of the TIA remains substantially constant during calibration of the receive circuit.
    Type: Application
    Filed: March 30, 2016
    Publication date: October 5, 2017
    Inventors: Mohammad U. Abbasi, Sendill K. Gnanaeswaran, Nicholas P. Cowley
  • APPARATUS AND METHOD FOR TRACKING AND CANCELLING DC OFFSET TO ACQUIRE SMALL AC SIGNAL
    Publication number: 20160374574
    Abstract: Described is an apparatus which comprises: a source to generate a first current having AC and DC components; a current-to-voltage converter to convert the first current or a copy of the first current to a first voltage proportional to a resistance, the first voltage having AC and DC components that correspond to the AC and DC components of the first current; a sample-and-hold circuit to filter the AC component from the first voltage and for providing an output voltage with the DC component; and an amplifier to receive the output voltage.
    Type: Application
    Filed: June 27, 2015
    Publication date: December 29, 2016
    Inventors: Craig P. Finlinson, Mohammad U. Abbasi, Nicholas P. Cowley, Mark S. Mudd