Patents by Inventor Gaurav Malhotra

Gaurav Malhotra 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).

  • Publication number: 20250132958
    Abstract: A method and an apparatus are provided in which an analog signal may be sampled by an analog-to-digital converter (ADC) to generate digital signal samples affected by baseline wander. Digital signal processing (DSP) may be performed on the digital signal samples to generate a recovered signal with corrected baseline wander. The DSP is performed using a first adaptable coefficient for a current digital signal sample and a second adaptable coefficient for a previous digital signal sample.
    Type: Application
    Filed: November 22, 2023
    Publication date: April 24, 2025
    Inventor: Gaurav MALHOTRA
  • Patent number: 11961468
    Abstract: A method for compensating for transistor aging in a display device is presented. The method entails dividing pixels into a plurality of groups including a first group, the first group including Z pixels wherein Z>1, sampling a pixel current for each pixel in a subset of pixels in the first group, the subset including M pixels wherein 1?M?Z, determining an ErrorM using the sampled pixel current for the M pixels and a predefined reference current, and adjusting an input voltage for a transistor in more than one of the Z pixels based on the ErrorM. The adjusting of the input voltage may include generating a modified voltage Vd, wherein Vd=A*Vin+B, and each of A and B is determined using ?M sign(Errorm).
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: April 16, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gaurav Malhotra, Anup Jose, Amir Amirkhany
  • Patent number: 11902408
    Abstract: A clock recovery circuit may include: a data slicer configured to output data values based on an input signal, a first error block, a phase adjustment loop including: a first error slicer configured to generate a first error signal based on a comparison of a threshold voltage and an input voltage, wherein the first error block is configured to selectively output the first error signal in response to a first pattern in the output data values, a second error block configured to selectively output the first error signal in response to a second pattern in the output data values, and a voltage threshold modification circuitry configured to adjust the threshold voltage based on output of the second error block, a voltage-controlled oscillator, wherein the data slicer and the first error slicer are clocked based on output of the voltage-controlled oscillator.
    Type: Grant
    Filed: December 9, 2022
    Date of Patent: February 13, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gaurav Malhotra, Amir Amirkhany, Jalil Kamali
  • Patent number: 11855648
    Abstract: A clock and data recovery (CDR) system includes a correlator configured to receive data, determine a first value of the received data, and output a second value corresponding to the received data, an accumulator configured to generate an accumulation value by accumulating the second value output from the correlator and output the accumulation value, and a state machine configured to determine whether a repeating pattern is present in the CDR system based on the accumulation value.
    Type: Grant
    Filed: April 14, 2022
    Date of Patent: December 26, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventor: Gaurav Malhotra
  • Publication number: 20230388098
    Abstract: A system and method for configuring a serial receiver. In some embodiments, the method, includes: setting a threshold of a data slicer to a first threshold value; receiving, by the data slicer, a first data value; and setting the threshold of the data slicer to a second threshold value, the second threshold value being equal to the first threshold value plus a first adjustment, the first adjustment having the same sign as the first data value minus the first threshold value.
    Type: Application
    Filed: June 22, 2022
    Publication date: November 30, 2023
    Inventor: Gaurav MALHOTRA
  • Publication number: 20230231561
    Abstract: A clock and data recovery (CDR) system includes a correlator configured to receive data, determine a first value of the received data, and output a second value corresponding to the received data, an accumulator configured to generate an accumulation value by accumulating the second value output from the correlator and output the accumulation value, and a state machine configured to determine whether a repeating pattern is present in the CDR system based on the accumulation value.
    Type: Application
    Filed: April 14, 2022
    Publication date: July 20, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Gaurav Malhotra
  • Patent number: 11632830
    Abstract: A system and method for setting one or more compensation coefficients for a transistor. In some embodiments, a method for setting a first compensation coefficient for a transistor includes: determining a plurality of measured transistor currents, each at a respective one of a plurality of transistor control voltages; setting the first compensation coefficient based on the measured transistor currents and the transistor control voltages; and adjusting a voltage applied to a gate of the transistor based on the first compensation coefficient, the voltage corresponding to a color value.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: April 18, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventor: Gaurav Malhotra
  • Publication number: 20230104142
    Abstract: A clock recovery circuit may include: a data slicer configured to output data values based on an input signal, a first error block, a phase adjustment loop including: a first error slicer configured to generate a first error signal based on a comparison of a threshold voltage and an input voltage, wherein the first error block is configured to selectively output the first error signal in response to a first pattern in the output data values, a second error block configured to selectively output the first error signal in response to a second pattern in the output data values, and a voltage threshold modification circuitry configured to adjust the threshold voltage based on output of the second error block, a voltage-controlled oscillator, wherein the data slicer and the first error slicer are clocked based on output of the voltage-controlled oscillator.
    Type: Application
    Filed: December 9, 2022
    Publication date: April 6, 2023
    Inventors: Gaurav Malhotra, Amir Amirkhany, Jalil Kamali
  • Patent number: 11615739
    Abstract: A method of compensating for change in pixel and a display device incorporating such method are presented. The method includes dividing pixels into groups including a previous group L?1, a current group L and a next group L+1; determining Aconverged[L] and Bconverged[L] for each pixel in the current group L; for each pixel in the current group L, determining a first moving average Amean[L] and a second moving average Bmean[L] as follows: A mean [ L ] = A ? mean [ L - 1 ] ? ( K - 1 ) + A [ L ] K , B mean [ L ] = B ? mean [ L - 1 ] ? ( K - 1 ) + B [ L ] K , wherein Amean[L?1] is a first moving average of a pixel in the corresponding column in the previous group L?1, Bmean[L?1] is a second moving average of a pixel in the corresponding column in the previous group L?1, and K is a moving average window; and for the next group L+1, setting a first initial value A0[L+1] and a second initial value A0[L+1] of each pixel to Amean[L] and Bmean[L].
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: March 28, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyunglok Kim, Amir Amirkhany, Gaurav Malhotra
  • Patent number: 11546127
    Abstract: A clock recovery circuit may include: a data slicer configured to output data values based on an input signal, a first error block, a phase adjustment loop including: a first error slicer configured to generate a first error signal based on a comparison of a threshold voltage and an input voltage, wherein the first error block is configured to selectively output the first error signal in response to a first pattern in the output data values, a second error block configured to selectively output the first error signal in response to a second pattern in the output data values, and a voltage threshold modification circuitry configured to adjust the threshold voltage based on output of the second error block, a voltage-controlled oscillator, wherein the data slicer and the first error slicer are clocked based on output of the voltage-controlled oscillator.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: January 3, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gaurav Malhotra, Amir Amirkhany, Jalil Kamali
  • Publication number: 20220318221
    Abstract: Systems and methods relate to auto-tagging of data in a data lake or a data storage. Generating a statistical summary of the data lake and interactively receiving data in a selected column of an exemplar data addresses an issue of efficiently and accurately auto-tagging data in a data lake. The present disclosure automatically generates a statistical summary of the data lake using a lightweight off-line processing. A graphical user interface interactively receives an exemplar data file with a selection of a column in the exemplar data file. A list of candidate data-tagging patterns is generated based on the statistical summary and updates the list by removing candidate data-tagging patterns that under-generalize the data. The present disclosure determines a data-tagging pattern by selecting a candidate data-tagging profile from the list based on having the least number of matching columns in the data lake.
    Type: Application
    Filed: June 23, 2022
    Publication date: October 6, 2022
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Yeye HE, Jie SONG, Yue WANG, Surajit CHAUDHURI, Vishal Kumar Seshagirirao ANIL, Yaron Y. GOLAND, Gaurav MALHOTRA, Blake LASSITER
  • Publication number: 20220303110
    Abstract: A clock recovery circuit may include: a data slicer configured to output data values based on an input signal, a first error block, a phase adjustment loop including: a first error slicer configured to generate a first error signal based on a comparison of a threshold voltage and an input voltage, wherein the first error block is configured to selectively output the first error signal in response to a first pattern in the output data values, a second error block configured to selectively output the first error signal in response to a second pattern in the output data values, and a voltage threshold modification circuitry configured to adjust the threshold voltage based on output of the second error block, a voltage-controlled oscillator, wherein the data slicer and the first error slicer are clocked based on output of the voltage-controlled oscillator.
    Type: Application
    Filed: October 22, 2021
    Publication date: September 22, 2022
    Inventors: Gaurav Malhotra, Amir Amirkhany, Jalil Kamali
  • Patent number: 11397716
    Abstract: Systems and methods relate to auto-tagging of data in a data lake or a data storage. Generating a statistical summary of the data lake and interactively receiving data in a selected column of an exemplar data addresses an issue of efficiently and accurately auto-tagging data in a data lake. The present disclosure automatically generates a statistical summary of the data lake using a lightweight off-line processing. A graphical user interface interactively receives an exemplar data file with a selection of a column in the exemplar data file. A list of candidate data-tagging patterns is generated based on the statistical summary and updates the list by removing candidate data-tagging patterns that under-generalize the data. The present disclosure determines a data-tagging pattern by selecting a candidate data-tagging profile from the list based on having the least number of matching columns in the data lake.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: July 26, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Yeye He, Jie Song, Yue Wang, Surajit Chaudhuri, Vishal Kumar Seshagirirao Anil, Yaron Y. Goland, Gaurav Malhotra, Blake Lassiter
  • Publication number: 20220156242
    Abstract: Systems and methods relate to auto-tagging of data in a data lake or a data storage. Generating a statistical summary of the data lake and interactively receiving data in a selected column of an exemplar data addresses an issue of efficiently and accurately auto-tagging data in a data lake. The present disclosure automatically generates a statistical summary of the data lake using a lightweight off-line processing. A graphical user interface interactively receives an exemplar data file with a selection of a column in the exemplar data file. A list of candidate data-tagging patterns is generated based on the statistical summary and updates the list by removing candidate data-tagging patterns that under-generalize the data. The present disclosure determines a data-tagging pattern by selecting a candidate data-tagging profile from the list based on having the least number of matching columns in the data lake.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 19, 2022
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Yeye HE, Jie SONG, Yue WANG, Surajit CHAUDHURI, Vishal Kumar Seshagirirao ANIL, Yaron Y. GOLAND, Gaurav MALHOTRA, Blake LASSITER
  • Publication number: 20220093041
    Abstract: A method for compensating for transistor aging in a display device is presented. The method entails dividing pixels into a plurality of groups including a first group, the first group including Z pixels wherein Z>1, sampling a pixel current for each pixel in a subset of pixels in the first group, the subset including M pixels wherein 1?M?Z, determining an ErrorM using the sampled pixel current for the M pixels and a predefined reference current, and adjusting an input voltage for a transistor in more than one of the Z pixels based on the ErrorM. The adjusting of the input voltage may include generating a modified voltage Vd, wherein Vd=A*Vin+B, and each of A and B is determined using ?M sign(Errorm).
    Type: Application
    Filed: February 23, 2021
    Publication date: March 24, 2022
    Inventors: Gaurav Malhotra, Anup Jose, Amir Amirkhany
  • Patent number: 11250780
    Abstract: A system and method for estimating and using pixel compensation coefficients. In some embodiments, the method includes, during a first time interval: comparing a first pixel current for a pixel of the display with a first reference current, to obtain a first pixel current error signal, the first pixel current error signal being the sign of a difference between the first pixel current and the first reference current; and updating one or more compensation coefficients for the pixel, based on the first pixel current error signal.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: February 15, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Amir Amirkhany, Anup P. Jose, Gaurav Malhotra, Younghoon Song, Mohamed Elzeftawi
  • Publication number: 20220046770
    Abstract: A system and method for setting one or more compensation coefficients for a transistor. In some embodiments, a method for setting a first compensation coefficient for a transistor includes: determining a plurality of measured transistor currents, each at a respective one of a plurality of transistor control voltages; setting the first compensation coefficient based on the measured transistor currents and the transistor control voltages; and adjusting a voltage applied to a gate of the transistor based on the first compensation coefficient, the voltage corresponding to a color value.
    Type: Application
    Filed: October 14, 2020
    Publication date: February 10, 2022
    Inventor: Gaurav Malhotra
  • Patent number: 11069282
    Abstract: A system and method for operating a sensing circuit for sensing a pixel current of a pixel of a display panel using correlated double sampling. In some embodiments, the method includes: during a first interval of time, resetting a pixel sensing circuit; during a third interval of time following the first interval of time, operating the pixel sensing circuit in an integration mode; during a fourth interval of time following the third interval of time, operating the pixel sensing circuit in a hold mode; and during a fifth interval of time following the fourth interval of time, operating the pixel sensing circuit in the integration mode.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: July 20, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Amir Amirkhany, Anup P. Jose, Gaurav Malhotra, Younghoon Song, Mohamed Elzeftawi
  • Patent number: 11011106
    Abstract: A method for compensating for characteristics of a transistor. In some embodiments, the method includes: measuring an error value, the error value being a difference between: a target current and a current driven by the transistor when the transistor is controlled by a compensated control signal based on an input control signal; adding to a first compensation parameter a first adjustment; adding to a second compensation parameter a second adjustment; and applying to a gate of the transistor a voltage equal to the sum of: the second compensation parameter, and the product of: the first compensation parameter, and an uncompensated drive voltage.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: May 18, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gaurav Malhotra, Jalil Kamali
  • Publication number: 20210049951
    Abstract: A system and method for operating a sensing circuit for sensing a pixel current of a pixel of a display panel using correlated double sampling. In some embodiments, the method includes: during a first interval of time, resetting a pixel sensing circuit; during a third interval of time following the first interval of time, operating the pixel sensing circuit in an integration mode; during a fourth interval of time following the third interval of time, operating the pixel sensing circuit in a hold mode; and during a fifth interval of time following the fourth interval of time, operating the pixel sensing circuit in the integration mode.
    Type: Application
    Filed: October 17, 2019
    Publication date: February 18, 2021
    Inventors: Amir Amirkhany, Anup P. Jose, Gaurav Malhotra, Younghoon Song, Mohamed Elzeftawi