Telephonic communications – Substation or terminal circuitry – Visual signalling
Patent
1994-06-20
1996-06-11
Hofsass, Jeffery
Telephonic communications
Substation or terminal circuitry
Visual signalling
379 88, 379 96, 345173, G09G 302, H04M 342
Patent
active
055264220
ABSTRACT:
A procedure for cleaning a display screen in a touch screen based telephone such that features of the telephone are not inadvertently activated is described. The procedure operates by causing the telephone (actually, a processor in the telephone) to enter a "clean screen" mode in response to a request from the user to clean the display screen. While in the "clean screen" mode, all signals generated in response to the user touching the display screen are ignored. In this matter, while in the "clean screen" mode, the user is able to clean the display screen without inadvertently activating any features of the telephone. The telephone automatically determines when the user has finished cleaning the display screen. When it is determined that the user has finished cleaning the display screen, the telephone leaves the "clean screen" mode and enters an "active screen". While in the "active screen" mode, all signals generated in response to the user touching the display screen are processed.
REFERENCES:
patent: 4992779 (1991-02-01), Sugino et al.
patent: 5402477 (1995-03-01), McMahan et al.
AT&T Corp.
Hofsass Jeffery
Saint-Surin Jacques M.
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