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30 Pages·2013·1.77 MB·English

USO05430886A
United States Patent [19] [11] Patent Number: 5,430,886
Furtek [45] Date of Patent: Jul. 4, 1995
[54] METHOD AND APPARATUS FOR MOTION Komarek et al. “Array architectures for block-match
ESTINIATION ing algorithms”, 1989, pp. 1301-1308.
Artieri and Jutand, “A Versatile and Powerfull Chip
[76] Inventor: Frederick C. Furtek, 350 Sharon Park For Real Time Motion Estimation”, IEEE Computer,
Dr., Menlo Park, Calif. 94025 pp. 2453-2456, (Feb. 1989).
Considine, Bhandal and Gooding, “Single Chip Motion
[21] Appl. N0.: 898,862
Estimator For Video Codec Applications”, Third Inter
[22] Filed: Jun. 15, 1992 national Conference On Image Processing and Its Ap
plications, pp. 285-289 (Jul., 1989).
[51] Int. Cl.6 ..................... .. G06F 11/00; G06F 15/ 16 Dianysian and Baker, “Bit-serial architecture for real
[52] US. Cl. .............................. .;. 395/800; 364/2306; time motion compensation”, SPIE vol. 1001 Visual Com
364/231.9; 364/265; 364/DIG. 1; 371/67.l;
munications and Image Processing ’88, pp. 900-907.
348/416; 348/518
Primary Examiner-Alyssa H. Bowler
[58] Field of Search ............. .. 395/ 800, 775, 500, 375,
395/575; 358/105, 107, 133, 135, 136, 139, 148, Assistant Examiner-Alpesh M. Shah
448, 452; 341/159, 163; 371/681, 67.1, 67.8, Attorney, Agent, or Firm-Pennie & Edmonds
68.3
[5 7] ABSTRACT
[56] References Cited A method and apparatus for generating a sequence of
U.S. PATENT DOCUMENTS displacement ‘vectors and associated minimal error val
ues. The vectors and-associated values represent the
4,864,393 9/1989 Harradine et al. ................ .. 358/105 best match of a current block of elements of a ?rst frame
4,875,094 10/1989 Haghiri et al. ............. .. 358/105 of a signal with one of a plurality of search blocks of
4,924,306 5/ 1990 van der Meer et a1. .... .. 358/105
elements located within a corresponding search win
5,083,202 l/l992 Parke .......................... .. 358/105
dow of a second frame. A ?rst stream of data, represent
5,099,325 3/1992 Artieri et a1. .. .... .. 358/136
ing the elements of the ?rst frame is transmitted to a
5,138,447 8/1992 Shen et a.l. ........................ .. 358/133
linear array of processing units; a second stream of data,
FOREIGN PATENT DOCUMENTS representing the elements of the second frame is trans
474276Al 9/1990 European Pat. Off. . mitted to the array; a hybrid stream of data from the
395293A1 10/1990 European Pat. Off. . elements of the second stream is synthesized such that
2214751 9/1989 United Kingdom . the elements of the hybrid stream are aligned in time
2236449 4/1991 United Kingdom . with the elements of the ?rst stream so as to enable each
processing unit of the array to compute an error be
OTHER PUBLICATIONS
tween a particular current block and a different search
Colavin et al. “A dedicated circuit for real time motion block of the corresponding search window. The error is
estimation”, 1991, pp. 96-99. a measure of the difference between two blocks of ele
Hsieh et al. “VLSI architecture for block-matching ments. Speci?cally, the errors are computed between
motion estimation algorithm”, Jun. 1992, pp. 172-174. each current block and each search block of the corre
Komarck et al. “VLSI architectures for block-match sponding search windows such that each processing
ing algorithms”, 1989, pp. 2457-2460. unit of the array outputs the computed error essentially
Sun et al. “A ?exible VLSI architecture for full search immediately after the previous unit outputs the error.
block matching motion-vector estimation”, 1989, pp.
25 Claims, 18 Drawing Sheets
179-182.
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US. Patent July 4, 1995 Sheet 1 of 18 5,430,886
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US. Patent 5,430,886.
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