M65727FP Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC

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M65727FP

MPEG2 MOTION ESTIMATION LSI

MITSUBISHI ELECTRIC  

DISTRIBUTION RESTRICTED. COPYRIGHT RESERVED 1995

1.2 Characteristics

The M65727 has the following characteristics.

*Highly efficient parallel architecture for high speed processing and data transfer, which

eliminates I/O bottleneck.

*Supports prediction modes for MPEG2, Field prediction, Frame prediction, Field Dual-Prime

prediction and Frame Dual-Prime prediction.

*For Field Mode and Frame Mode, it is possible to do simultaneous vector search over 16x16 and two

16x8 blocks.

*Implementing low cost image compression hardware is possible using DRAM frame memory in a 32

bit DRAM interface.

*Estimates half-pel precision vectors in a chip.

*The exhaustive search method is used over the integer-pel precision vectors in a search range.

Evaluation function is full sampled mean absolute error.

*The M65727's scalable architecture allows wider search range with multiple-chip configuration.

When expanding the horizontal search range, it is possible to use a common search window image

data into all chips.

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