Title:
A SYSTEM AND A METHOD OF DETERMINING THE POSITION OF A RADIATION EMITTING ELEMENT
Document Type and Number:
WIPO Patent Application WO2004081502
Kind Code:
A3
Abstract:
A method and a system, such as a touch pad, for determining the position of a radiation emitter, which radiation emitter may be an actively radiation emitting stylus, pen, pointer, or the like or may be a passive, radiation scattering/reflecting/diffusing element, such as a pen, pointer, or a finger of an operator. The radiation is modulated by a bar code element and provided onto an at least one-dimensional detector. From the output of the detector, the position of the radiation emitter is determined. This system may be used as a standard touch pad or for determining the position of emitters external thereto, such as a marker used on a wall or black/white board or may be used with "internal" positions such as a touch pad.
Inventors:
ELIASSON JONAS OVE PHILIP (DK)
OESTERGAARD JENS WAGENBLAST ST (DK)
OESTERGAARD JENS WAGENBLAST ST (DK)
Application Number:
PCT/DK2004/000165
Publication Date:
November 11, 2004
Filing Date:
March 12, 2004
Export Citation:
Assignee:
O PEN APS (DK)
ELIASSON JONAS OVE PHILIP (DK)
OESTERGAARD JENS WAGENBLAST ST (DK)
ELIASSON JONAS OVE PHILIP (DK)
OESTERGAARD JENS WAGENBLAST ST (DK)
International Classes:
G06F3/038; G06F3/042; (IPC1-7): G06F3/033
Foreign References:
| US6141104A | 2000-10-31 | |||
| US5502568A | 1996-03-26 | |||
| US5499098A | 1996-03-12 | |||
| DE10026201A1 | 2000-12-14 | |||
| GB1380144A | 1975-01-08 | |||
| FR2172828A1 | 1973-10-05 | |||
| US3440426A | 1969-04-22 | |||
| DE3511330A1 | 1986-10-02 |
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