Backlight Brightness - Casio DT-X8 Series Software Manual

2.1.2 Display
Basic Specifications
The QVGA (320 x 240 dots) mode is supported by the terminal.
Table 2.2
Display specification
Display size
* Dead Pixels
The LCD panel employed in this product uses high precision and substantial number of components
which commonly cause a small number of the pixels not to light or to remain lit all the time. This is
due to the characteristics of LCD panel yield in accuracy over 99.99% and permissible.

Backlight Brightness

• A brightness of the backlight can be changed at the Control Panel.
• Setting can be made in one of nine grades for power source either when the power is provided
by an external power supply (with connected AC Adaptor via cradle) or when the power is
provided by the installed lithium-ion battery pack.
• Setting can be made in application by using ExtEscape()API function.
• If the brightness is set to 1 (minimum), the backlight is turned off.
• The default is 9 (maximum) when an external power source is used or 7 when the lithium-ion
battery pack is used.
The functions of the System Library relevant to the Backlight Brightness are as follows.
SysGetBLBattery
SysSetBLBattery
SysSetBLExpower
SysGetBLExpower
SysGetBLMaximum : Retrieves the maximum value of brightness for the backlight.
65,536 colors 2-way TFT LCD* (16 bpp, Red: 5 bits, Green: 6 bits, Blue: 5 bits)
X direction 240 dots
Y direction 320 dots
: Retrieves brightness of the screen when the power is supplied by battery
pack.
: Sets up brightness of the screen when the power is supplied by battery
pack.
: Sets up brightness of the backlight when the power is supplied by
external power.
: Retrieves brightness of the backlight when the power is supplied by
external power.
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