Patents by Inventor Omer Lem Wehunt

Omer Lem Wehunt 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).

  • System to detect a power management system resume event from a stylus and touch screen
    Patent number: 6445383
    Abstract: A system to detect a power management system resume event from a stylus and touch screen. When an electronic device equipped with a touch screen display is within its quiescent low power state, the present invention enables an operator to activate it by touching a stylus or their finger to its touch screen display. Specifically, an embodiment in accordance with the present invention includes a comparator installed within an electronic touch screen device. While the electronic touch screen device is within its quiescent low power state, the comparator determines whether the touch screen display has been touched by comparing an output voltage signal transmitted by the touch screen display with a reference voltage signal. When the touch screen display is touched, the voltage of the output voltage signal becomes greater than the voltage of the reference voltage signal, causing the comparator to transmit a resume event signal.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: September 3, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Peter Chambers, Omer Lem Wehunt, Jr.
  • Cache based scan matrix keyboard controller
    Patent number: 6040788
    Abstract: The present invention comprises a cache based scan matrix keyboard controller system. The cache based scan matrix keyboard controller system includes a plurality of keys on a keyboard adapted to signal when a key is activated. The cache based scan matrix keyboard controller system also includes a cache memory component and a state machine. The cache memory component stores information regarding the keys for a period of time. The state machine is adapted to interpret the information in the cache memory component to efficiently control said keyboard in a manner that minimizes reliance on CPU processing and reduces expenditure of design, manufacturing and operating resources.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: March 21, 2000
    Assignee: VLSI Technology, Inc.
    Inventors: Peter Chambers, Omer Lem Wehunt, Jr.
  • Direct memory access controller with full read/write capability
    Patent number: 5896550
    Abstract: Versatility of access to a register set within a direct memory access (DMA) controller is increased. The DMA controller controls direct memory access transfers to and from a main memory. When a first control field in a configuration register has a first value, normal operating access is provided to a register set within the DMA controller. The register set provides control and status of the direct memory access transfers to and from the main memory. When the first control field in the configuration register has a second value special access is provided to the register set. The special access allows storage and restoration of a state of a DMA transfer.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: April 20, 1999
    Assignee: VLSI Technology, Inc.
    Inventors: Omer Lem Wehunt, Jeffrey M. Lavin