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參數(shù)資料
| 型號： | H.261 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | LINE TRANSMISSION OF NON-TELEPHONE SIGNALS |
| 中文描述： | 線傳輸非電話信號 |
| 文件頁數(shù)： | 8/31頁 |
| 文件大?。?/td> | 123K |
| 代理商： | H.261 |
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Recommendation H.261 (03/93)
5
T 1 5 0 2 4 4 1 9 0 d 0 3
C C
T
Q
Q
T
F
P
p
t
q z
q
v
f
T
Q
P
F
C C
p
t
q z
q
v
f
V i d e o
i n
T o v d e o
m u p l e x
c o d e r
T r a n s f o r m
Q u a n t z e
P i c u r e m e m o y w h m o t o n c o m p e n s a t e d v a a b l e d e l a y
L o o p i e r
C o d i n g c o n r o l
F a g f o r I N T R A / N T E R
F a g f o r t a n s m i e d o r n o t
Q u a n t z e i n d i a o n
Q u a n t z n g n d e x o r a n s o r m c o e f i c e n t s
M o t o n v e c t o
S w i c h i n g o n o o f h e o o p i e r
- 1
- 1
F G U R E 3 H 2 6 1
S o u r c o d r
FIGURE 3/H.261...[
D03
] = 16 CM
3.2.3
Loop filter
The prediction process may be modified by a two-dimensional spatial filter (FIL) which operates on pels within a predicted 8
by 8 block.
The filter is separable into one-dimensional horizontal and vertical functions. Both are non-recursive with coefficients of 1/4,
1/2, 1/4 except at block edges where one of the taps would fall outside the block. In such cases the 1-D filter is changed to
have coefficients of 0, 1, 0. Full arithmetic precision is retained with rounding to 8 bit integer values at the 2-D filter output.
Values whose fractional part is one half are rounded up.
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| H1P | NPN/NPN resistor-equipped transistors R1 = 47 kohm, R2 = open |
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| H2610-210M | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
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