| US 7,394,853 B2 | ||
| Motion vector coding method and motion vector decoding method | ||
| Satoshi Kondo, Yawata (Japan); Shinya Kadono, Nishinomiya (Japan); Makoto Hagai, Moriguchi (Japan); and Kiyofumi Abe, Kadoma (Japan) | ||
| Assigned to Matsushita Electric Industrial Co., Ltd., Osaka (Japan) | ||
| Appl. No. 10/473,322 PCT Filed Apr. 10, 2003, PCT No. PCT/JP03/04540 § 371(c)(1), (2), (4) Date Sep. 29, 2003, PCT Pub. No. WO03/092299, PCT Pub. Date Nov. 06, 2003. |
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| Claims priority of application No. 2002-121051 (JP), filed on Apr. 23, 2002; and application No. 2002-173865 (JP), filed on Jun. 14, 2002. | ||
| Prior Publication US 2004/0218674 A1, Nov. 04, 2004 | ||
| Int. Cl. H04B 1/66 (2006.01); H04N 7/12 (2006.01); H04N 11/02 (2006.01); H04N 11/04 (2006.01) | ||
| U.S. Cl. 375—240.16 | 5 Claims |
| 1. A motion vector decoding method comprising:
an assigning step for assigning, when at least one block among a plurality of decoded blocks in the neighborhood of a current
block has two motion vectors which refer to reference pictures in the same direction in a display order, an identifier to
each motion vector for a respective one of the plurality of decoded blocks;
a generating step for generating a predicted motion vector for a motion vector of the current block based on the motion vectors
with the same identifier among the motion vectors for the plurality of decoded blocks; and
a decoding step for decoding a coded motion vector for the current block using the predicted motion vector.
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