Owner Silverbrook Research Pty. Ltd.

Inventors Lapstun, Paul; Silverbrook, Kia; Lapstun, Jacqueline, Anne; Walmsley, Simon, Robert

Agent Silverbrook Research Pty. Ltd.

Pub. Number AU-B-2002223288

PCT Pub. Number WO02/42955

Priority 09/722174 25.11.00 US

Filing date 26 November 2001

Wipo publication date 3 June 2002

Acceptance publication date 28 October 2004

G06F 017/60 Digital computing or data processing equipment or methods, specially adapted for specific functions

G08C 021/00 Systems for transmitting the position of an object with respect to a predetermined reference system, e.g. tele-autographic system

G06K 009/18 Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints - using printed characters having additional code marks or containing code marks, e.g. the character being composed of individual strokes of different shape, each representing a different code value

G06K 011/18 Methods or arrangements for graph-reading or for converting the pattern of mechanical parameters, e.g. force or presence, into electrical signals

G06F 003/06 Input arrangements for transferring data to be processed into a form capable of being handled by the computer - Digital input from, or digital output to, record carriers

G06F 003/033 Input arrangements for transferring data to be processed into a form capable of being handled by the computer - Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks

G06F 003/03 Input arrangements for transferring data to be processed into a form capable of being handled by the computer - Arrangements for converting the position or the displacement of a member into a coded form