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參數(shù)資料
| 型號： | SDA9400 |
| 廠商： | MICRONAS SEMICONDUCTOR HOLDING AG |
| 英文描述： | Scan Rate Converter using Embedded DRAM Technology Units |
| 中文描述： | 掃描頻率轉(zhuǎn)換器采用嵌入式DRAM技術(shù)股 |
| 文件頁數(shù)： | 19/94頁 |
| 文件大?。?/td> | 1180K |
| 代理商： | SDA9400 |
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SDA 9400
Micronas
19
Preliminary Data Sheet
Inside the SDA 9400 the number of active lines per field depends on the chosen vertical
compression factor VDECON (see also
Output sync controller (OSC)
on page 40).
6.3.2
Horizontal compression
The horizontal compression compresses the incoming signal horizontally by a constant factor. For
the Y and UV signal the same filter characteristics are used. The horizontal compression can be
switched off.
The table below shows the relation between the parameter HDECON and the compression factor.
Input write parameter: HDECON
The APPLIP (Active Pixels Per Line Input, see also
Input sync controller (ISC)
on page 11) value
defines the length of an active line. Inside the SDA 9400 the number of active pixels per line is
APPL (Active Pixels Per Line) and its value depends on the chosen horizontal compression factor
HDECON. The table below explains the connection between APPL and APPLIP (see also
Output
sync controller (OSC)
on page 40).
Connection between APPL and APPLIP
HDECON (1Ch)
00
01
10
11
no horizontal compression
factor 2
factor 4
not defined
Mode
APPL
no horizontal compression (HDECON = ’00’)
horizontal compression, Factor 2 (HDECON = ’01’)
horizontal compression, Factor 4 (HDECON = ’10’)
MULTIPIC > ’0’ (dominant, see also
Multipicture display
on page 20)
APPLIP
(APPLIP + 1) / 2
(APPLIP + 3) / 4
45
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