Gpe Graphic Picture Enhancement; Standard Mode; Presentation Mode; Graphic/Video Mode - Sony CPD-420GS Training Manual

GPE Graphic Picture Enhancement

Overview
Through the front panel GPE control, this unit provides the user with the
ability to choose three preset modes of picture quality.

1. Standard Mode

2. Presentation Mode

3. Graphics/Video Mode
When the GPE button is pressed, IC003 (OSD) displays to the user, that
Standard, Presentation or Graphics/Video mode has been selected. The
result is a change in picture brightness in Presentation mode, to a change
in picture brightness and sharpness in the Graphics/Video mode.
Standard Mode
In the Standard Mode, no effects to the RGB signals are performed. The
unit defaults to the Standard Mode upon power on and power save modes.
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Presentation Mode
When the Presentation Mode is selected, IC1001 (N Board) via the I
data bus communicates with IC001 (RGB DRIVE). IC001 increases the
P-P levels approximately 200mV (5%) of the RGB output signal at pin 20
(R OUT), pin 24 (G OUT) and pin 27 (B OUT). In addition, IC001 de-
creases the R BKG, G BKG and B BKG DC level approximately 100mV.

Graphic/Video Mode

When the Graphic/Video Mode is selected, IC1001 (N Board) via the I
data bus communicates with IC001 (RGB DRIVE). IC001 increases the
P-P levels and via internal detail amp increases the high frequency re-
sponse of the R G B output signal at pin 20 (R OUT), pin 24 (G OUT) and
pin 27 (B OUT).
IC001/20 R OUT
2
C
2 C