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參數(shù)資料
| 型號(hào)： | TDA9170 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | YUV picture improvement processor based on histogram modification(基于柱狀修正的YUV圖畫改進(jìn)處理器) |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP32 |
| 封裝： | 0.400 INCH, SHRINK, PLASTIC, SOT-232-1, DIP-32 |
| 文件頁數(shù)： | 1/22頁 |
| 文件大?。?/td> | 321K |
| 代理商： | TDA9170 |
October 1994
2
Philips Semiconductors
Preliminary specification
YUV picture improvement processor based
on histogram modification
TDA9170
FEATURES
Picture content dependent non-linear Y and U, V
processing by histogram analysis
Adaptive and variable gamma correction controls
Black and white stretch capabilities
Transparent I
2
C-bus control
On-chip window generator for valid histogram
measurement and black detection.
GENERAL DESCRIPTION
The TDA9170 is a transparent analog video processor
with a YUV interface. It offers three main luminance
processing functions any combination of which can be
selected.
The luminance transfer is controlled in a non-linear
manner 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 picture will be improved.
Black restoration is available in the event of a set-up in the
luminance signal. A variable gamma function, after the
histogram conversion, offers the possibility of excellent
brightness control.
To maintain a proper colour reproduction, the saturation of
the U and V colour difference signals are controlled as a
function of the actual non-linearity in the luminance
channel.
The TDA9170 concept has maximum flexibility with the
optional on-board I
2
C-bus (including hardwired address
select) and window control. The supply voltage is 8 V. The
device is mounted in a 32 pin SDIP envelope.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA9170
SDIP32
plastic shrink in-line package; 32 leads (400 mil)
SOT232-1
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| TDA9171 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:YUV picture improvement processor based on histogram modification and blue stretch |
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| TDA9178 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:YUV one chip picture improvement based on luminance vector-, colour vector- and spectral processor |
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