Computer graphics processing and selective visual display system – Display peripheral interface input device – Including keyboard
Reexamination Certificate
2004-02-13
2008-08-26
Shalwala, Bipin (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Including keyboard
C345S156000, C345S169000, C345S170000, C345S205000, C341S022000, C362S024000, C362S026000
Reexamination Certificate
active
07417624
ABSTRACT:
Described is a zero-force key activation keyboard with individual key illumination. The keyboard includes a non-moving key for causing generation of an input signal when activated. The key has a depressed surface defining an approximately concave well with sides forming an open region sized to receive a tip of a finger. A light emitter positioned on one side of the well emits a beam of light across the open region to an opposite side of the well. A light detector is positioned on the opposite side of the well to receive the light beam and to signal activation of the key when the light beam is obstructed from being received by the light detector. Each key is illuminated from within the well. When the key is activated, its illumination color can change. Upon release, the illumination color returns immediately or gradually back to a previous color or unlighted state.
REFERENCES:
patent: 3372789 (1968-03-01), Heinz et al.
patent: 4163883 (1979-08-01), Boulanger
patent: 4334280 (1982-06-01), McDonald
patent: 5909028 (1999-06-01), Yamamoto
patent: 6590508 (2003-07-01), Howell et al.
patent: 6609805 (2003-08-01), Nelson
patent: 6648530 (2003-11-01), Kamei et al.
patent: 6657616 (2003-12-01), Sims
patent: 6677931 (2004-01-01), Chi et al.
patent: 2001/0002166 (2001-05-01), Katrinecz et al.
patent: 2001/0048379 (2001-12-01), Kaikuranta et al.
patent: 2003/0067758 (2003-04-01), Shipman
patent: 2003/0202336 (2003-10-01), Ostergard et al.
Guerin & Rodriguez LLP
Kovalick Vince E
Rodriguez Michael A.
Shalwala Bipin
LandOfFree
Zero-force key activation keyboard with dynamic individual... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Zero-force key activation keyboard with dynamic individual..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zero-force key activation keyboard with dynamic individual... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4002070