Patents by Inventor Mauricio Arturo Zavaleta

Mauricio Arturo Zavaleta 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).

  • Mixed signal processing system and method for powering same
    Patent number: 6034562
    Abstract: A mixed signal processing system (22) includes digital (28) and analog (29) systems and is powered by a variable external voltage, such as a battery voltage. A voltage regulator (41) regulates the battery voltage to a nominal potential less than the battery voltage. The voltage regulator (41) provides the regulated voltage to a digital subsystem (51) of the digital system (28). A regulated charge pump (43) provides a voltage which is above the battery voltage and substantially constant due to regulation. The regulated charge pump (43) provides the regulated charge-pumped voltage to an analog subsystem (61) of the analog system (29) for better analog operation. A level shifter (44) equalizes signal levels between the digital (28) and analog (29) systems.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: March 7, 2000
    Assignee: Motorola, Inc.
    Inventors: Luis Augusto Bonet, Alan Lee Westwick, Mauricio Arturo Zavaleta, James Alan Tuvell, David E. Bush, Michael Dale Floyd