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Abstract
In a display pager, the use of an LCD results in the need to provide backlighting for use in low ambient light environments. Current products have a button that when pressed activates the backlight. This button is different from the button used to step through messages. This situation could be improved by sim- ply requiring the user to press and hold the "read message" button to activate the backlight. That is, press and release to cause the message to be displayed. Press and hold to cause the message to be displayed and after, for example, two seconds, activate the backlight. Deactivation of the backlight could take place upon button release or after some pre-set period of button inactivity (as in some of today's products). Figure 1 shows an embodiment of a pager utilizing this feature.
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MO'lrOROLA INC. Technical Develouments Volume 12 April 1991
SINGLE BUTTON READ/BACKLIGHT CONTROL FOR DISPLAY PAGERS
by Morris Moore
In a display pager, the use of an LCD results in the need to provide backlighting for use in low ambient light environments. Current products have a button that when pressed activates the backlight. This button is different from the button used to step through messages. This situation could be improved by sim- ply requiring the user to press and hold the "read message" button to activate the backlight. That is,
press and release to cause the message to be displayed. Press and hold to cause the message to be displayed and after, for example, two seconds, activate the backlight. Deactivation of the backlight could take place upon button release or after some pre-set period of button inactivity (as in some of today's products). Figure 1 shows an embodiment of a pager utilizing this feature.
f DISPLAY PAGER ARCHITECTURE \
IMPLEMENTING SINGLE BUTTON READ I BACK-LIGHT CONTROL
BUTTON
-L
CONTROLLER
\ FIGURE 1 J
0 MOtorOla. Inc. ,991 163
[This page contains 14 pictures or other non-text objects]
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M MOTOROLA INC. Technical Developments Volume 12 April 1991
0
Figure 2 is a flowchart of the software to Second, there needs to be some button press or similar implement this feature. This technique could be action that alters the mokle of the display. Finally, the applied to other products as well, given that certain action of holding dow...
