Control apparatus for operation panel and electronic apparatus

Details Control apparatus for operation panel and electronic apparatus Control apparatus for operation panel and electronic apparatus

2007-06-22

2011-10-04

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

C710S073000

Reexamination Certificate

active

08031179

ABSTRACT:
A signal line used in a key matrix is shared between a signal line used in a first display unit and a signal line used in a second display unit. Two types of periodical pulse signals are superimposed on a level signal which indicates data displayed on the second display unit. One type is a pulse signal for detecting key input and another type is a pulse signal which indicates data displayed on the first display unit.

REFERENCES:
patent: 2003/0020630 (2003-01-01), Kawamata et al.
patent: 2009/0237264 (2009-09-01), Bobey et al.
patent: 7-152468 (1995-06-01), None

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