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| 型號： | M65727FP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | MPEG2 MOTION ESTIMATION LSI |
| 中文描述： | 大規(guī)模集成電路的MPEG2運動估計 |
| 文件頁數(shù)： | 5/55頁 |
| 文件大小： | 242K |
| 代理商： | M65727FP |
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DISTRIBUTION RESTRICTED. COPYRIGHT RESERVED 1995
CONTACT MITSUBISHI ELECTRONICS REGARDING DISTRIBUTION
5
Frame Mode (per frame)
*Block size
*Search range
16x16 and 16x8 (Top*), 16x8 (Bottom**) simultaneously
Vertical direction: ±7.5(*A) / ±15.5 pixel (Switchable)
It corresponds to 2 sets of fields each ±3.5 pixel / ±7.5 pixel location for
16x8 blocks.
However, ±8.0(*A) / ±16.0 are used during expansion respectively
Horizontal direction: ±7.5 / ±15.5 / ±31.5 / ±63.5 / ±127.5 pixel
(Selectable)
Integer-pel precision exhaustive search
Half-pel precision 9 points around the best integer-pel precision vector
(Including the integer precision location)
*Evaluation function Full sampled mean absolute error
*Execution cycle
Depends on the search range
The execution cycle mentioned here refers to the throw-in period of MB,
not the 1MB processing time.
ex. 1 (Horizontal ±7.5, vertical ±7.5)
ex. 2 (Horizontal ±15.5, vertical ±7.5)
ex. 3 (Horizontal ±7.5, vertical ±15.5)
ex. 4 (Horizontal ±15.5, vertical ±15.5) (806
) 2
Search window image inputs
When vertical ±7.5 is searched: 512 pixels / (550
)
cycles
When vertical ±15.5 is searched: 768 pixels / (806
)
cycles
*Processing capability
27MHz operation:
Processing the search range over horizontal ±7.5 and
vertical ±7.5 for the ITU-R 601 image size is possible.
40MHz operation:
Processing the search range over horizontal ±7.5 and
vertical ±15.5 for the ITU-R 601 image size is possible.
*Search methods
(550
)
(550
) 2
(806
)
cycles
/ ΜΒ
cycles
/ ΜΒ
cycles
/ ΜΒ
cycles
/ ΜΒ
*, **: "Top" and "Bottom" mentioned here indicate the field parities. In the
following explanation, a frame with the top field side as the first line is assumed.
*A: The mode of vertical search range is ±7.5 can be used only under 27MHz
operation.
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