Patents Assigned to Digital Ink, Inc.
  • Electronic portable pen apparatus and method
    Patent number: 6577299
    Abstract: A wireless pen apparatus for producing signals representative of writing by a user, including: a wireless pen; a removable cap on the pen; and, when the cap is removed from the pen and placed at a reference position, communicating wave energy between at least one location on the pen and at least one location on the cap for determining the position of the at least one location on the pen with respect to the reference position of the cap, and for producing signals that depend on the determined position of the at least one location on the pen.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: June 10, 2003
    Assignee: Digital Ink, Inc.
    Inventors: Illya Schiller, Arkady Pittel