Patents by Inventor Brian Liebowitz

Brian Liebowitz 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).

  • Clock feedthrough compensation in image sensor systems
    Patent number: 10863122
    Abstract: A pixel circuit and method for operating the same is disclosed. The circuit includes a first driver circuit coupled to receive an analog pixel data, transfer signal and reset signal. The circuit further includes a source follower transistor having a source terminal coupled to a column node, and a gate terminal coupled to the first driver circuit. The circuit further includes a second driver circuit coupled to receive the transfer signal and the reset signal. The second driver circuit is capacitively coupled to the column node through a first capacitor.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: December 8, 2020
    Assignee: Apple Inc.
    Inventors: Nick Chang, Mansour Keramat, Hyunsik Park, Brian Liebowitz, Ashirwad Bahukhandi
  • Clock Feedthrough Compensation in Image Sensor Systems
    Publication number: 20190373198
    Abstract: A pixel circuit and method for operating the same is disclosed. The circuit includes a first driver circuit coupled to receive an analog pixel data, transfer signal and reset signal. The circuit further includes a source follower transistor having a source terminal coupled to a column node, and a gate terminal coupled to the first driver circuit. The circuit further includes a second driver circuit coupled to receive the transfer signal and the reset signal. The second driver circuit is capacitively coupled to the column node through a first capacitor.
    Type: Application
    Filed: February 11, 2019
    Publication date: December 5, 2019
    Inventors: Nick Chang, Mansour Keramat, Hyunsik Park, Brian Liebowitz, Ashirwad Bahukhandi
  • Integrated Circuit Having Receiver Jitter Tolerance ("JTOL") Measurement
    Publication number: 20180052194
    Abstract: An integrated circuit capable of on-chip jitter tolerance measurement includes a jitter generator circuit to produce a controlled amount of jitter that is injected into at least one clock signal, and a receive circuit to sample an input signal according to the at least one clock signal. The sampled data values output from the receiver are used to evaluate the integrated circuit's jitter tolerance.
    Type: Application
    Filed: September 8, 2017
    Publication date: February 22, 2018
    Inventors: Hae-Chang Lee, Jaeha Kim, Brian Liebowitz
  • Integrated circuit having receiver jitter tolerance (“JTOL”) measurement
    Patent number: 9791492
    Abstract: An integrated circuit capable of on-chip jitter tolerance measurement includes a jitter generator circuit to produce a controlled amount of jitter that is injected into at least one clock signal, and a receive circuit to sample an input signal according to the at least one clock signal. The sampled data values output from the receiver are used to evaluate the integrated circuit's jitter tolerance.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: October 17, 2017
    Assignee: Rambus Inc.
    Inventors: Hae-Chang Lee, Jaeha Kim, Brian Liebowitz
  • Integrated Circuit Having Receiver Jitter Tolerance ("JTOL") Measurement
    Publication number: 20170052221
    Abstract: An integrated circuit capable of on-chip jitter tolerance measurement includes a jitter generator circuit to produce a controlled amount of jitter that is injected into at least one clock signal, and a receive circuit to sample an input signal according to the at least one clock signal. The sampled data values output from the receiver are used to evaluate the integrated circuit's jitter tolerance.
    Type: Application
    Filed: July 13, 2016
    Publication date: February 23, 2017
    Inventors: Hae-Chang Lee, Jaeha Kim, Brian Liebowitz