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參數(shù)資料
| 型號(hào)： | SAA7201 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Integrated MPEG2 AVG Decoder(綜合MPEG音頻視頻圖表譯碼器) |
| 中文描述： | 集成MPEG2解碼器的AVG（綜合的MPEG音頻視頻圖表譯碼器） |
| 文件頁數(shù)： | 16/36頁 |
| 文件大小： | 292K |
| 代理商： | SAA7201 |
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1997 Jan 29
16
Philips Semiconductors
Objective specification
Integrated MPEG2 AVG decoder
SAA7201
Graphics unit
The SAA7201 incorporates the display support for pixel
based graphics. Possible applications are the user
interface, logos and subtitling. Graphical data should be
grouped logically in regions and will be displayed in boxes
at the screen.
The definition of each region in the decoder consists of
four parts being a region descriptor, a top-field descriptor,
a bottom-field descriptor and a table-data descriptor:
The region descriptor contains information relevant for
the full region like format, size, position and pointers to
the other descriptors.
The top-field and bottom-field descriptor contain a pixel
based bit-map for the contents of that region for both
fields independently. The bit-maps can be stored in
either straight forward or in a compressed bit-map
format.
The table-data descriptor defines the tables to be used
for the transformation of bit-maps to display colours.
All descriptors should be loaded under control of the
external CPU in the external memory.
The appearance of graphical data at the display is
determined by the assembly of region descriptors in a so
called display list. An example of such a display list for the
4 regions example is shown in Fig.9.
Fig.8 Graphics unit.
handbook, full pagewidth
REGION-1 (VBI-SIGNALS)
REGION-2
active
video
REGION-3 (256 ENTRY CLUT)
REGION-4
MGD328
active
video
H-size (2)
H-start (2)
V-start (2)
V-size (2)
Fig.9 Display list.
handbook, full pagewidth
DESCRIPTOR 1
MAP
CLUT
bottom-field
top-field
table
data
PIXEL
DATA
PIXEL
DATA
128 bit
gfx
anchor
address
eodl
position, size, format
pointers to locations in SDRAM
DESCRIPTOR 2
DESCRIPTOR 3
DESCRIPTOR 4
MGD329
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| SAA7201H | Integrated MPEG2 AVG decoder |
| SAA7212 | Integrated MPEG2 AVG Decoder(綜合MPEG音頻視頻圖表譯碼器) |
| SAA7212H | Integrated MPEG AVG decoder |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7201H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated MPEG2 AVG decoder |
| SAA7205 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:MPEG-2 systems demultiplexer |
| SAA7205H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:MPEG-2 systems demultiplexer |
| SAA7206 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:DVB compliant descrambler |
| SAA7206H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:DVB compliant descrambler |
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