Patents by Inventor Chris William Papalias

Chris William Papalias 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: 6407596
    Abstract: An electronic circuit generates additional clock edges from a reference clock signal utilizing switch-capacitor techniques. The electronic circuit includes a first capacitance circuit and a second capacitance circuit separated by a switch. During a first time period, the switch is open and the first capacitance circuit is charged. During a second time period, the switch is closed and at least a portion of the charge stored in the first capacitance circuit is transferred to the second capacitance circuit. The amount of charge transferred depends upon the relative sizes of the capacitance circuits. During another time period, the second capacitance circuit is discharged until its associated potential reaches a threshold level corresponding to a threshold set by a level detector. Upon reaching the threshold level, the level detector outputs a logic signal. A high frequency clock signal is produced by combining the logic signal with the reference clock signal.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: June 18, 2002
    Assignee: National Semiconductor Corporation
    Inventors: Robert Callaghan Taft, Chris William Papalias