Patents by Inventor Roberta Burger Riccio

Roberta Burger Riccio 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).

  • Patent number: 8085006
    Abstract: A shunt regulator for stepping down an input potential to an output potential, has an input for applying the input potential, an output for tapping off the output potential and a voltage drop circuit, across which the voltage difference between the input potential and the output potential drops. It is possible for the current flowing through the voltage drop circuit or its lower and/or upper limit value to be adjusted.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: December 27, 2011
    Assignee: Infineon Technologies AG
    Inventors: Roberta Burger-Riccio, Victor da Fonte Dias
  • Patent number: 6288591
    Abstract: A voltage level shifter and an associated level shifting method for shifting from a low voltage input signal to a high voltage output signal are discussed. The level shifter includes a voltage shifting stage having first and second control input nodes and an output node at which the output signal is produced based on control signals received at the control input nodes. The level shifter also includes first and second input inverters coupled in series between the input node and the first control input node; and a third input inverter coupled between the input node and the second control input node. The second inverter can include complementary first and second transistors each with control terminals coupled to an output of the first inverter. The first transistor has a first terminal coupled to the input node and is structured to pass the input signal to the first control input node based on a logic value of a signal output by the first inverter.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: September 11, 2001
    Assignee: STMicroelectronics S.r.l.
    Inventor: Roberta Burger Riccio
  • Patent number: 6225858
    Abstract: A method of reducing power consumption of an electric circuit having a primary supply voltage and first and second circuit blocks is discussed. The method includes determining for the first circuit block an operation time for a first critical path of the first circuit block and determining for the second circuit block an operation time of a second critical path of the second circuit block. From those operation times, the method determines that the operation time of the first critical path is faster than the operation time of the second critical path. The method then creates a first supply voltage for the first circuit block that is less than the primary supply voltage in response to determining that the operation time of the first critical path is faster than the operation time of the second critical path.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: May 1, 2001
    Assignee: STMicroelectronics, S.r.l.
    Inventors: Carlo Guardiani, Roberta Burger Riccio, Roberto Zafalon, Andrea Veggetti, Nicola Dragone