Patents by Inventor Corrado Castiglione

Corrado Castiglione 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).

  • Process for generating a variable frequency signal, for instance for spreading the spectrum of a clock signal, and device therefor
    Patent number: 7079616
    Abstract: The use of a PLL including a phase detector responsive to the phase difference between an input signal and a feedback signal and which pilots an oscillator in function of this difference, is envisaged. The PLL also includes a feedback path that is responsive to the signal generated by the oscillator and which generates said feedback signal via at least one divider with a variable division ratio. The division ratio of said divider is modulated via a sigma-delta modulator, the input of which is fed with a triangular-wave modulating signal. The preferred application is that of a spread spectrum clock generator (SSCG) for digital electronic systems.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: July 18, 2006
    Assignee: STMicroelectronics S.R.L.
    Inventors: Corrado Castiglione, Massimo Scipioni, Carlo Alberto Romani
  • Process for generating a variable frequency signal, for instance for spreading the spectrum of a clock signal, and device therefor
    Publication number: 20030039330
    Abstract: The use of a PLL including a phase detector responsive to the phase difference between an input signal and a feedback signal and which pilots an oscillator in function of this difference, is envisaged. The PLL also includes a feedback path that is responsive to the signal generated by the oscillator and which generates said feedback signal via at least one divider with a variable division ratio. The division ratio of said divider is modulated via a sigma-delta modulator, the input of which is fed with a triangular-wave modulating signal. The preferred application is that of a spread spectrum clock generator to (SSCG) for digital electronic systems.
    Type: Application
    Filed: August 19, 2002
    Publication date: February 27, 2003
    Inventors: Corrado Castiglione, Massimo Scipioni, Carlo Alberto Romani