Patents by Inventor Raffaele Iardino

Raffaele Iardino 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).

  • Method of regulating a timeout delay introduced at start-up of a digital system to ensure readiness of a master amplitude-regulated crystal oscillator and implementing circuit
    Patent number: 8729974
    Abstract: A crystal oscillator circuit is configured to output an oscillation signal. A bias circuit responds to control signal to generate a bias current for application to the crystal oscillator circuit. A current generator generates a sense current from the control signal. The sense current is compared to a reference current by a comparator circuit. The comparator circuit generates a ready signal in response to the comparison. The ready signal is indicative of whether the oscillation signal output from the crystal oscillator circuit is ready for use by other circuitry. The reference current may be generated by a circuit which replicates the bias circuit.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: May 20, 2014
    Assignee: STMicroelectronics S.r.l.
    Inventors: Giulio Zoppi, Raffaele Iardino
  • METHOD OF REGULATING A TIMEOUT DELAY INTRODUCED AT START-UP OF A DIGITAL SYSTEM TO ENSURE READINESS OF A MASTER AMPLITUDE-REGULATED CRYSTAL OSCILLATOR AND IMPLEMENTING CIRCUIT
    Publication number: 20130002365
    Abstract: A crystal oscillator circuit is configured to output an oscillation signal. A bias circuit responds to control signal to generate a bias current for application to the crystal oscillator circuit. A current generator generates a sense current from the control signal. The sense current is compared to a reference current by a comparator circuit. The comparator circuit generates a ready signal in response to the comparison. The ready signal is indicative of whether the oscillation signal output from the crystal oscillator circuit is ready for use by other circuitry. The reference current may be generated by a circuit which replicates the bias circuit.
    Type: Application
    Filed: May 4, 2012
    Publication date: January 3, 2013
    Applicant: STMICROELECTRONICS S.R.L.
    Inventors: Giulio Zoppi, Raffaele Iardino