Computer graphics processing and selective visual display system – Display peripheral interface input device – Including keyboard
Reexamination Certificate
2005-07-05
2008-10-21
Abdulselam, Abbas I (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Including keyboard
C200S342000, C341S022000
Reexamination Certificate
active
07439955
ABSTRACT:
An electronic device includes a microprocessor connected to an input keyboard comprising primary conductive lines connected to primary areas and to a terminal. It further includes first, second and third secondary conductive lines connected to secondary areas and to a terminal. It further includes input keys each of which, when operated, establishes contact between a primary area of a primary line and a secondary area of a secondary line to place each of these two lines in a high state. It further includes first and second processors each having a first input connected to the terminal of the first or second secondary line, a second input connected to the terminal of the third secondary line, and an output that is either in the same state as the first or second secondary line to which it is connected if the third secondary line is not in its high state, or in the high state if the third secondary line is in its high state, and is connected, like each primary line terminal, to the microprocessor so that it can determine each key operated as a function of the respective states of the primary lines and the outputs of the first and second processing means.
REFERENCES:
patent: 4395704 (1983-07-01), Kishimoto
patent: 4408184 (1983-10-01), Ishii
patent: 7123241 (2006-10-01), Bathiche
patent: 2002/0167494 (2002-11-01), Sherman
French Search Report- Mar. 11, 2005.
Barthelet Philippe
Ricca Eric Dalla
Vetu Pascal
Abdulselam Abbas I
Morgan & Lewis & Bockius, LLP
TCL & Alcatel Mobile Phones Limited
LandOfFree
Input keyboard with increased number of keys for an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Input keyboard with increased number of keys for an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Input keyboard with increased number of keys for an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4011569