Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1998-03-02
2000-07-25
Wu, Xiao
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345157, G09G 508
Patent
active
060941901
ABSTRACT:
For controlling a position indicator, e.g. a cursor, on a visual display, e.g. the monitor screen associated with a personal computer or a laptop computer screen, a position indicator controlling device (1) comprises an indicator position controller (6) in the form of a continuous membrane of elastomeric material (8) stretched, in wrinkle-free manner, around a solid form-keeping core (7) held captive in a housing (2) so that by applying finger pressure in a generally horizontal direction to an uppermost exposed, part-spheroidal, portion of the membrane, the membrane can slide on the core to produce a corresponding output signal from one or more motion detectors (11, 12). The indicator position controller gives the appearance to a user of a spherical ball device (such as is commonly used in a laptop computer), but the special shape of the form-keeping core is such as to reduce the overall height requirement and leads to a heightwise compact construction for the position indicator controlling device (1').
According to two modifications (FIGS. 5 and 6), the indicator position controller (6) is realized by a normally spheroidal thick-walled elastomeric ball (8'), or by a solid elastomeric ball (8") held in a deformed state by the housing (2). The position indicator controlling device (1) can be designed for use as a ball-type device for a laptop computer or as a mouse for a personal computer.
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Telefonaktiebolaget LM Ericsson
Wu Xiao
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