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參數(shù)資料
| 型號： | GF9330-CBP |
| 廠商： | Gennum Corporation |
| 英文描述： | High Performance HDTV/SDTV Deinterlacer |
| 中文描述： | 高性能高清/標清去隔行掃描 |
| 文件頁數(shù)： | 32/42頁 |
| 文件大?。?/td> | 449K |
| 代理商： | GF9330-CBP |
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GF9330 Data Sheet
32 of 42
Proprietary and Confidential
18283 - 4
June 2004
The GF9330 will provide 3:2 sequence compensation (field merging) for film
source material. When using internal 3:2 sequence detection, the GF9330 will
perform "field-merging" for 3:2 sequences, or will revert to VT processing when no
3:2 sequence is identified. The 3:2 sequence can be internally detected (host
interface bit, MODE_32 = 0), or supplied via the external sequence pins
(XSEQ[3:0]) for MODE_32 = HIGH. With the external sequence selected, the
device will revert back to VT processing if the external sequence pins have an
invalid code (i.e. A to F). The XSEQ[3:0] value should be changed during the sixth
blank line of each vertical blanking interval.
Figure 3-12: Sequence Detection Input Signals
3.9.3 Film Rate Down Conversion Mode (MODE= 010)
When configured to operate as a Film Rate Down Converter, the GF9330 removes
3:2 sequences from the input video stream and outputs 24Hz progressive scan
video. No filtering of the signal is performed in this mode of operation. The external
3:2 sequence pins (XSEQ[3:0]) are used in this mode, the setting of the MODE_32
bit has no effect.
NOTE: In this mode, 3:2 compensation remains in effect at all times.
3.9.4 Film Rate Down Conversion Mode, Segmented Frame Output (MODE= 011)
This mode operates in the same manner as the Film Rate Down Converter mode,
but outputs the progressive scan video in segmented frame format.
3.9.5 Video Pass Through Mode (MODE=111)
The GF9330, operating in Pass-through Mode, will pass through only the active
portion of the input video signal. All other ancillary data will be lost from the input
data stream.
The video channel is maintained in bypass mode, however, no processing takes
place. Therefore, field buffers are still in use and the chip must be in a known
programmed state.
A
B
O
E
Original Film
Material (24p)
GF9330 Video
Input (30i)
O
E
O
E
O
E
O
E
C
D
SEQUENCE
(XSEQ[3:0])
1
0
2
3
4
5
6
7
8
9
0
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