Memory control apparatus and efficient search pattern for...

Details Memory control apparatus and efficient search pattern for... Memory control apparatus and efficient search pattern for...

2006-07-04

2006-07-04

Vo, Tung (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07072395

ABSTRACT:
A memory control apparatus for block-matching motion estimation and an associated search pattern for processing video sequence in real-time are described in this disclosure. The motion estimation subsystem utilizes a set of memory banks to store a section of the reference picture used for computing the differences between an underlying block and a spatially shifted reference block. The memory control apparatus derives the memory addresses for storing the reference picture region in the memory banks in such a way that a row or a column of data from the reference block can be accessed in parallel without wait. The row- or column-data are then made available to the parallel computation unit for computing the block difference in a single processing cycle. An associated spiral search pattern that covers the whole search region is also described that minimizes the required data access and consequently saves power consumption. Combined with a search-stop criterion, the search pattern will result in early search termination during the block-matching motion estimation process and consequently conserves more power.

REFERENCES:
patent: 5247355 (1993-09-01), Frederiksen
patent: 5315388 (1994-05-01), Shen et al.
patent: 5428403 (1995-06-01), Andrew et al.
patent: 5541661 (1996-07-01), Odaka et al.
patent: 5608656 (1997-03-01), Purcell et al.
patent: 5731850 (1998-03-01), Maturi et al.
patent: 5799169 (1998-08-01), Kalapathy
patent: 5987178 (1999-11-01), Anesko et al.
patent: 6118901 (2000-09-01), Chen et al.
patent: 6212231 (2001-04-01), Takano
patent: 6690727 (2004-02-01), Mehta

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