Hitachi CML153, Service Manual

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5. VL-531 DISPLAY CONTROL BOARD
A. Description
The VL-531 display control board is design to directly convert the R.G.B signals from VGA
Card D-sub port to optimum LCD timing signals so as to construct a high display quality LCD
monitor.
B. Features
•
On board sage chip to detect display timings and control user functions.
•
Using sage chip to convert R.G.B signals to digital timing
•
Using sage chip to offer full screen expansion function on non-XGA mode(Auto-Zoom).
•
Support VESA DPMS function.
•
Support DDC2B functions.
C. Block Diagram (Control CKT)
C-1 Sage Operation
The s9050-100 is highly-integrated display processors. It has an ADC/PLL block and a
microprocessor integrated on a single chip. The cost-effective s9050-100 is suitable for the
XGA and the s9050 for the SXGA market segment with smaller memory requirements. Other
features include a brand new high-end scaler, Active Color Management, a flexible OSD,
Autoadjust, SureSync
TM
and independent monitoring of the analog interface. A new standalone
on-chip pattern generator has been incorporated to simplify the manufacture of monitors.