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| 型號： | SDA9254-2 |
| 廠商： | SIEMENS A G |
| 元件分類： | DRAM |
| 英文描述： | 2.6 MBit Dynamic Sequential Access Memory for Television Applications (TV-SAM) with On-chip Noise Reduction Filter |
| 中文描述： | VIDEO DRAM, PQFP64 |
| 封裝： | PLASTIC, MQFP-64 |
| 文件頁數(shù)： | 3/32頁 |
| 文件大?。?/td> | 183K |
| 代理商： | SDA9254-2 |
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SDA 9254-2
Semiconductor Group
3
1998-01-16
Figure 2
Noise Reduction with 4:2:2 Signals
Adaptive Field Based Noise Reduction
The reduction of noise is performed by recursive filtering. The filter has the following transfer
function:
For K = 1 the transfer function is H(z) = 1, that means no filtering is performed and the input data
remains unchanged. For K < 1 noise reduction filtering is activated. The input data and the delayed
data from the memory are combined according H(z).
UEB10380
DD
V
4
4
8
3
CLASS
Y
UV
8
SDC4...11
SDC0...3
DLI0...3
SQA0...3
SQA4...11
DLO0...3
NR422
SDA 9254-2
SDA 9251-2X
SQA0...3
SDC0...3
4
4
4
8
8
Y
UV
H z
K
1
1
K
–
–
z
1
–
×
-------------------------------------------
=
z
e
j
ω
T
FLD
,
T
FLD
fielddelay
=
=
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