Title:
SYSTEM FOR DISPOSING A PROXIMITY SENSITIVE TOUCHPAD BEHIND A MOBILE PHONE KEYMAT
Document Type and Number:
WIPO Patent Application WO2002100074
Kind Code:
A3
Abstract:
A proximity-based mutually capacitance-sensitive touchpad (26) that is disposed directly beneath a keypad keymat (22) of a mobile telephone (10), wherein posts (24) associated with each key (20) pass through a mutually capacitance-sensitive sensor electrode grid of the touchpad such that the keypad posts (24) do not interface with touchpad detection and tracking of pointing object that moves along the keypad surface, to thereby enable touchpad data entry, cursor control, and scroll bar control on a display of the mobile telephone, wherein the keypad posts actuate mechanical switches (32) underneath the touchpad.
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Inventors:
TAYLOR BRIAN
Application Number:
PCT/US2002/018055
Publication Date:
March 27, 2003
Filing Date:
June 06, 2002
Export Citation:
Assignee:
CIRQUE CORP (US)
LAYTON MICHAEL D (US)
TAYLOR DAVID (US)
LAYTON MICHAEL D (US)
TAYLOR DAVID (US)
International Classes:
G06F3/02; G06F1/16; G06F3/0354; G06F3/044; H04B1/38; H04M1/02; H04M1/23; H04M1/247; (IPC1-7): G09G5/00
Foreign References:
| US6243080B1 | 2001-06-05 | |||
| US5675361A | 1997-10-07 | |||
| US5909210A | 1999-06-01 | |||
| US5341133A | 1994-08-23 | |||
| JPH10260763A | 1998-09-29 | |||
| US5864334A | 1999-01-26 |
Other References:
See also references of EP 1405298A4
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