Patents by Inventor Rajat K. Lal

Rajat K. Lal 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).

  • Power-efficient, pulsed driving of capacitive loads to controllable voltage levels
    Patent number: 7663618
    Abstract: Power-efficient, pulsed driving of capacitive loads to controllable voltage levels, with particular applicability to LCDs. Energy stored in a portion of the capacitive load is recovered during a recovery phase. Time-varying signals are used to drive the load and to recover the stored energy, thus minimizing power losses, using processes named adiabatic charging and adiabatic discharging.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: February 16, 2010
    Assignee: University of Southern California
    Inventors: Lars G. Svensson, William C. Athas, Rajat K. Lal
  • Power-efficient, pulsed driving of capacitive loads to controllable voltage levels
    Patent number: 6985142
    Abstract: Power-efficient, pulsed driving of capacitive loads to controllable voltage levels, with particular applicability to LCDs. Energy stored in a portion of the capacitive load is recovered during a recovery phase. Time-varying signals are used to drive the load and to recover the stored energy, thus minimizing power losses, using processes named adiabatic charging and adiabatic discharging.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: January 10, 2006
    Assignee: University of Southern California
    Inventors: Lars G. Svensson, William C. Athas, Rajat K. Lal