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參數(shù)資料
| 型號： | SAA4974H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Besic without ADC |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 文件頁數(shù)： | 21/28頁 |
| 文件大小： | 173K |
| 代理商： | SAA4974H |
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1998 Apr 21
21
Philips Semiconductors
Product specification
Besic without ADC
SAA4974H
Fig.12 Luminance levels.
handbook, full pagewidth
black 16
white 255
8-BIT INPUT
10-BIT OUTPUT
display_mode = 1
display_mode = 0
0
0
64
1023
1023
0
256
288
767
1.34 V
p
p
p
p
MGM693
852
171
86
937
11 APPLICATION
The SAA4974H supports two different up-converter
concepts. The simple one is shown in Fig.13. In this
application only one field memory SAA4955TJ is needed
for a 100 Hz conversion based on a field repetition
algorithm (AABB mode). The concept can be upgraded by
a noise reduction based on a motion adaptive field
recursive filter if the SAA4956TJ is used instead of the
SAA4955TJ.
The SAA4974H supports a dual-clock system.
The acquisition clock is taken from the digital front-end.
The display control is based on a clock generated by an
external H-PLL. By this structure the stability of the display
is enhanced compared to a one-clock system if an
unstable source like a VCR is used as an input.
For low-cost applications it is possible to run the IC as a
one-clock system.
The second system supported by the SAA4974H is shown
in Fig.14. This concept needs two field memories
(SAA4955TJ) and the signal processing IC MELZONIC
(SAA4991WP). The SAA4991WP allows a vector based
motion estimation and compensation for a display of
100 Hz pictures in high-end TV sets which is free of motion
artefacts. It additionally provides a variable vertical zoom
function, noise and cross colour reduction. Furthermore a
multi-PIP feature is supported making use of the field
memories.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA4977H | Besic |
| SAA4978 | Picture Improved Combined Network PICNIC |
| SAA4978H | Picture Improved Combined Network PICNIC |
| SAA4979H | Sample rate converter with embedded high quality dynamic noise reduction and expansion port |
| SAA4981 | Monolithic integrated 16 : 9 compressor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA4977H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Besic |
| SAA4978 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Picture Improved Combined Network PICNIC |
| SAA4978H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Picture Improved Combined Network PICNIC |
| SAA4979H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Sample rate converter with embedded high quality dynamic noise reduction and expansion port |
| SAA4981 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Monolithic integrated 16 : 9 compressor |
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