Patents by Inventor Jernej Rozman

Jernej Rozman 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).

  • Low power mode card detection
    Patent number: 11228344
    Abstract: A circuit includes an in-phase/quadrature down converter configured to be coupled to an antenna of a first NFC (near field communication) device. DC cancellation circuitry is coupled at outputs of the converter. Detection circuitry is configured to analyze DC signals output by the DC cancellation circuits to detect the presence of a second NFC device.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: January 18, 2022
    Assignee: STMICROELECTRONICS RAZVOJ POLPREVODNIKOV D.O.O.
    Inventors: Jernej Rozman, Tilen Svete
  • LOW POWER MODE CARD DETECTION
    Publication number: 20200204215
    Abstract: A circuit includes an in-phase/quadrature down converter configured to be coupled to an antenna of a first NFC (near field communication) device. DC cancellation circuitry is coupled at outputs of the converter. Detection circuitry is configured to analyze DC signals output by the DC cancellation circuits to detect the presence of a second NFC device.
    Type: Application
    Filed: December 4, 2019
    Publication date: June 25, 2020
    Inventors: Jernej Rozman, Tilen Svete
  • Method for reducing amplitude noise in a received signal within an RFID interrogator
    Patent number: 9294137
    Abstract: A method is performed for a signal transmitted by an RFID interrogator being a radiofrequency electromagnetic sine wave. An amplitude noise contribution RSdAN to a demodulated received signal RSd within a frequency interval of a low-pass filter is determined by means of a measured demodulated transmitted signal TSd as RSdAN=k.TSd in that a dc component DCRS in said demodulated received signal RSd and a dc component DCTS in said demodulated transmitted signal TSd are measured and a conversion factor k is determined as k=DCRS:DCTS. A receiver output signal O is continuously generated out of the received signal by subtracting said amplitude noise contribution RSdAN from the demodulated received signal RSd, filtering the cleaned signal RSd-k.TSd by the low-pass filter and amplifying it. The conversion factor is determined in an exceptionally simplified way as said ratio of said dc components. No receiving interruptions are needed.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: March 22, 2016
    Assignee: AMS R&D ANALOGNI POLPREVODNIKI, D.O.O.
    Inventors: Vinko Kunc, Jernej Rozman, Maja Atanasijevic-Kunc
  • METHOD FOR REDUCING AMPLITUDE NOISE IN A RECEIVED SIGNAL WITHIN AN RFID INTERROGATOR
    Publication number: 20140335813
    Abstract: A method is performed for a signal transmitted by an RFID interrogator being a radiofrequency electromagnetic sine wave. An amplitude noise contribution RSdAN to a demodulated received signal RSd within a frequency interval of a low-pass filter is determined by means of a measured demodulated transmitted signal TSd as RSdAN=k·TSd in that a dc component DCRS in said demodulated received signal RSd and a dc component DCTS in said demodulated transmitted signal TSd are measured and a conversion factor k is determined as k=DCRS:DCTS. A receiver output signal O is continuously generated out of the received signal by subtracting said amplitude noise contribution RSdAN from the demodulated received signal RSd, filtering the cleaned signal RSd-k.TSd by the low-pass filter and amplifying it. The conversion factor is determined in an exceptionally simplified way as said ratio of said dc components. No receiving interruptions are needed.
    Type: Application
    Filed: November 29, 2012
    Publication date: November 13, 2014
    Inventors: Vinko Kunc, Jernej Rozman, Maja Atanasijevic-Kunc