Dynamic image encoding method and apparatus
AssigneeFujitsu Limited
InventorsHiroaki Yamashita, Kiyoshi Sakai, Takahiro Kobayakawa
Life of this patent
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Abstract
A dynamic image encoding method and an apparatus therefor which apply to a hierarchical motion vector detection process using an SDRAM frame memory. A precedent process is executed sequentially for one rank of a reduced screen obtained after thinning out an input screen to memorize the result, and then a subsequent process is executed sequentially between the input screens for macro blocks of the reduced screen having provided the result of the precedent process so that the precedent and the subsequent process are repeated.
Claims12
A dynamic image encoding method for executing a hierarchical motion vector detection process using a frame memory, comprising:
- executing a precedent process sequentially for a rank of reduced screens obtained by thinning out an input screen;
- storing a result of the precedent process in the frame memory;
- executing a subsequent process between input screens sequentially for all macro blocks included in the rank of the reduced screens having provided the result of the precedent process without requiring the precedent process for the rank of the reduced screens during the subsequent process;
- and
- repeating the precedent and the subsequent process.
A dynamic image encoding apparatus which executes a hierarchical motion vector detection process using a frame memory, comprising:
- a motion vector detection processor in which a precedent process is executed sequentially for a rank of reduced screens obtained by thinning out an input screen, and after storing a result of the precedent process in the frame memory, a subsequent process is executed between input screens sequentially for all macro blocks included in the rank of the reduced screens having provided the result of the precedent process without requiring the precedent process for the rank of the reduced screens during the subsequent process, and the precedent and the subsequent process are repeated.
Dependencies are inferred from the claim text.