TDA9178 Ver la hoja de datos (PDF) - Philips Electronics

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TDA9178

YUV one chip picture improvement based on luminance vector-, colour vector- and spectral processor

Philips Electronics 

Philips Semiconductors

YUV one chip picture improvement based on luminance

vector-, colour vector- and spectral processor

Preliminary specification

TDA9178

Input signals

Table 1 Amplitude mode selection

AMS

0

1

FUNCTION

0.315 V luminance (black to white) at

YIN

1.0 V luminance (black to white) at YIN

Table 2 Luminance determined histogram

LDH

0

1

FUNCTION

histogram segments fixed

histogram segments determined by peak

white

Table 3 Contour filter selection

CFS

0

1

FUNCTION

peaking frequency is 2 MHz at 1fH or

4 MHz at 2fH

peaking frequency is 3 MHz at 1fH or

6 MHz at 2fH

Table 4 Line frequency selection

FHS

0

1fH

1

2fH

FUNCTION

Table 5 Window letterbox format

WLB

0

1

FUNCTION

normal internal window format

‘Letterbox’ internal window format

Table 6 Video dependent coring on/off

VDC

0

1

FUNCTION

video dependent coring off

video dependent coring on

Table 7 Demonstration mode on/off

DEM

0

1

FUNCTION

DEMO off

DEMO on: auto-toggle selected features

on/off (cycle is 10 s at 1fH or 5 s at 2fH)

Table 8 Chrominance delay

CD2

0

1

CD1

0

1

CD0

FUNCTION

0 40 ns at 1fH or 20 ns at 2fH

1 −32 ns at 1fH or +16 ns at 2fH

Table 9 Overrule smart peaking

OSP

0

1

FUNCTION

smart peaking (maximum peaking

reduced if Coxing)

overrule smart peaking

Table 10 White-point stretch on/off

WPO

0

1

FUNCTION

white-point stretch on

white-point stretch off

Table 11 Dynamic skin tone on/off

DSK

0

1

FUNCTION

skin tone off

skin tone on

Table 12 Dynamic skin tone angle

ASK

0

1

FUNCTION

angle correction 123°

angle correction 117°

Table 13 Dynamic skin tone width

WSK

0

1

FUNCTION

default detection angle

60% increased detection angle

Table 14 Dynamic skin tone size

SSK

0

1

FUNCTION

default area

40% increased area

Table 15 Green enhancement on/off

DGR

0

1

FUNCTION

green enhancement off

green enhancement on

1999 Sep 24

12

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