blue stretch. TDA9171 Datasheet

TDA9171 stretch. Datasheet pdf. Equivalent

Part TDA9171
Description YUV picture improvement processor based on histogram modification and blue stretch
Feature INTEGRATED CIRCUITS DATA SHEET TDA9171 YUV picture improvement processor based on histogram modifi.
Manufacture NXP
Datasheet
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INTEGRATED CIRCUITS DATA SHEET TDA9171 YUV picture improve TDA9171 Datasheet
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TDA9171
INTEGRATED CIRCUITS
DATA SHEET
TDA9171
YUV picture improvement
processor based on histogram
modification and blue stretch
Preliminary specification
Supersedes data of 1995 Aug 01
File under Integrated Circuits, IC02
1996 Jun 17



TDA9171
Philips Semiconductors
YUV picture improvement processor based
on histogram modification and blue stretch
Preliminary specification
TDA9171
FEATURES
Picture content dependent non-linear Y and U,V
processing by luminance histogram analysis
TV standard independent
Incredible blue stretch
Optional YC-processing.
GENERAL DESCRIPTION
The TDA9171 is a transparent analog video processor
with YUV input and output interfaces.
The luminance transfer is controlled in a non-linear way by
the distribution, in 5 discrete histogram sections, of the
luminance values measured in a picture. As a result, the
contrast ratio of the most important parts of the scene will
be improved.
So as to maintain a proper colour reproduction the
saturation of the U and V colour difference signals are
also controlled as a function of the actual non-linearity in
the luminance channel.
Optionally, the YUV blue stretch circuitry can be activated
which offsets colours near white towards blue.
The supply voltage is 8 V.
The device is contained in a 20 lead dual in-line package.
QUICK REFERENCE DATA
SYMBOL
VCC
supply voltage
PARAMETER
MIN.
7.2
TYP.
MAX.
UNIT
8.8 V
ORDERING INFORMATION
TYPE
NUMBER
TDA9171
NAME
DIP20
PACKAGE
DESCRIPTION
plastic dual in-line package; 20 leads; (300 mil); no heat spreader
VERSION
SOT146-1
1996 Jun 17
2





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