Patents by Inventor Walter Luis L. Tercariol

Walter Luis L. Tercariol 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: 8143921
    Abstract: A compare cycle of a comparator includes a precharge phase and a compare phase. During the precharge phase, a node of the comparator is precharged to a defined voltage. In addition, during the precharge phase an input transistor of the comparator is decoupled from the node. During the compare phase, an input voltage is coupled to the node via the input transistor. The input transistor is maintained in saturation during both the precharge phase and the compare phase, reducing switching noise.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: March 27, 2012
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Fernando Z. Neto, Fernando Chavez Porras, Jon S. Choy, Walter Luis L. Tercariol
  • Publication number: 20110025379
    Abstract: A compare cycle of a comparator includes a precharge phase and a compare phase. During the precharge phase, a node of the comparator is precharged to a defined voltage. In addition, during the precharge phase an input transistor of the comparator is decoupled from the node. During the compare phase, an input voltage is coupled to the node via the input transistor. The input transistor is maintained in saturation during both the precharge phase and the compare phase, reducing switching noise.
    Type: Application
    Filed: August 3, 2009
    Publication date: February 3, 2011
    Applicant: Freescale Semiconductor, Inc.
    Inventors: Fernando Z. Neto, Fernando Chavez Porras, Jon S. Choy, Walter Luis L. Tercariol
  • Patent number: 7688113
    Abstract: A transceiver suitable for interfacing a logic device to a shared bus includes a transmit node that receives an input signal from the logic device and an I/O node, that is coupled to the shared bus. The transceiver may be designed for use with a shared-bus, single master, multiple slave architecture, e.g., a Local Interconnect Network (LIN). In a LIN compliant implementation, the transceiver may be suitable for use in at least some types of automobiles and other motorized vehicles. Control logic coupled to the transmit node may assert a current driver enable signal in response to detecting an assertion of the input signal. A current driver of the transceiver is configured to draw a time varying driver current from the shared bus node after detecting an assertion of the current driver enable signal. The driver current may cause a sinusoidal transition of the shared bus voltage.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: March 30, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Ivan Carlos Ribeiro Nascimento, Walter Luis L. Tercariol
  • Publication number: 20090243655
    Abstract: A transceiver suitable for interfacing a logic device to a shared bus includes a transmit node that receives an input signal from the logic device and an I/O node, that is coupled to the shared bus. The transceiver may be designed for use with a shared-bus, single master, multiple slave architecture, e.g., a Local Interconnect Network (LIN). In a LIN compliant implementation, the transceiver may be suitable for use in at least some types of automobiles and other motorized vehicles. Control logic coupled to the transmit node may assert a current driver enable signal in response to detecting an assertion of the input signal. A current driver of the transceiver is configured to draw a time varying driver current from the shared bus node after detecting an assertion of the current driver enable signal. The driver current may cause a sinusoidal transition of the shared bus voltage.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Ivan Carlos Ribeiro Nascimento, Walter Luis L. Tercariol