2.8LCD Controller Board
The LCD Controller Board incorporates components necessary to drive the LCD Panel (Section 6.7). Accepting VGA and VESA video standards (Section 1.2), these video signals are digitized and processed for the LCD Panel. Due to the LCD Panel’s fixed video resolution (800 x 600), the LCD Controller Board will perform independent horizontal and vertical zoom and shrink scaling of specified video resolutions less than or greater than the LCD Panel’s video resolution to fully accommodate the LCD Panel’s capability.
Magnification or reduction of specified video resolutions to match the native LCD Panel’s resolution incorporates scaling algorithms minimizing aliasing and image distortion. The LCD Controller Board includes the following characteristics:
∙Per pixel scaleable filters providing text sharpening and graphics smoothing for improved image quality.
∙Color depth enhancement by performing
2.9Grounding
Two (2) types of ground are provided: Chassis and Signal ground.
2.9.1Chassis Ground
The chassis ground is a conductor that is grounded to the earth within user circuitry. It is not used for current carrying purposes. It is used only for
2.9.2Signal Ground
Signal ground is electrically connected to chassis ground via the LCD Panel.
However, there are no DC currents carried through this interconnect.
2.10External And Internal Controls
A single external “Video Gain” control compensates for the white state (full white) video signal level range specified in Section 4.2.1 in achieving
External horizontal and vertical image positioning control(s) are provided to accommodate for the undefined delay between sync and video data edge referred to as Front Porch / Back Porch in Figure 9.
Title: Product Specification: LC12 | Page 6 of 24 |
Document Number: | Revision: A |