參數(shù)資料
型號(hào)： 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(hào)
文件頁數(shù)： 16/31頁
文件大?。?/td> 123K
代理商： H.261
Recommendation H.261 (03/93)
13
TABLE 2/H.261
VLC table for MTYPE
4.2.3.4 Motion vector data (MVD) (Variable length)
Motion vector data is included for all MC macroblocks. MVD is obtained from the macroblock vector by subtracting the
vector of the preceding macroblock. For this calculation the vector of the preceding macroblock is regarded as zero in the
following three situations:
1)
evaluating MVD for macroblocks 1, 12 and 23;
2)
evaluating MVD for macroblocks in which MBA does not represent a difference of 1;
3)
MTYPE of the previous macroblock was not MC.
MVD consists of a variable length codeword for the horizontal component followed by a variable length codeword for the
vertical component. Variable length codes are given in Table 3.
Advantage is taken of the fact that the range of motion vector values is constrained. Each VLC word represents a pair of
difference values. Only one of the pair will yield a macroblock vector falling within the permitted range.
4.2.3.5 Coded block pattern (CBP) (Variable length)
CBP is present if indicated by MTYPE. The codeword gives a pattern number signifying those blocks in the macroblock for
which at least one transform coefficient is transmitted. The pattern number is given by:
32 ·
P
1
+
16 ·
P
2
+
8 ·
P
3
+
4 ·
P
4
+
2 ·
P
5
+
P
6
where
P
n
=
1 if any coefficient is present for block
n
, else 0. Block numbering is given in Figure 10.
The codewords for CBP are given in Table 4.
Prediction
MQUANT
MVD
CBP
TCOEFF
VLC
Intra
x
0001
Intra
x
x
0000 001
Inter
x
x
1
Inter
x
x
x
0000 1
Inter
+
MC
Inter
+
MC
Inter
+
MC
Inter
+
MC + FIL
Inter
+
MC + FIL
Inter
+
MC + FIL
x
x
x
x
x
x
0000 0000
0000 0001
0000 0000
001
01
0000 01
1
x
x
x
x
x
01
x
x
x
x
x
NOTES
1
2
with a zero vector.
“x” means that the item is present in the macroblock.
It is possible to apply the filter in a non-motion compensated macroblock by declaring it as MC
+
FIL but
相關(guān)PDF資料
PDF描述
H-8-4 Broadband Two-Way Power Divider 2 MHz - 2 GHz
H-8-4BNC Broadband Two-Way Power Divider 2 MHz - 2 GHz
H_8_4 Broadband Two-Way Power Divider 2 MHz2 GHz
H1- NPN/NPN resistor-equipped transistors R1 = 47 kohm, R2 = open
H1P NPN/NPN resistor-equipped transistors R1 = 47 kohm, R2 = open
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
H2610(SERIES) 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC
H2610-10M 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC
H2610-210M 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC
H-2616-033 制造商:SAIA-BURGESS LEDEX AND DORMEYER PRODUCTS 功能描述:H-2616-033 / ROTARY / 3ER45o X3X4X6X9
H-2617-026 制造商:SAIA-BURGESS LEDEX AND DORMEYER PRODUCTS 功能描述:H-2617-026 / ROTARY / 5ER45o X3X4X6X9
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*