发明名称 |
Verfahren und Vorrichtung zur Bilddatenkodierung und -kompression |
摘要 |
<p>An image compression-coding device includes a level conversion circuit for adaptively reducing the amplitude of the quantification coefficient data based on statistical characteristics of the quantification coefficient data. The device further includes a selection circuit for selectively outputting either the quantification coefficient data after the level conversion or the quantification coefficient data before the level conversion, so that the image compression-coding device outputs a smaller amount of variable-length codes. <IMAGE></p> |
申请公布号 |
DE69421252(D1) |
申请公布日期 |
1999.11.25 |
申请号 |
DE1994621252 |
申请日期 |
1994.12.15 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
MIYASHITA, MITSUHIRO;BANNAI, TATSUSHI |
分类号 |
G06T9/00;H03M7/40;H04N1/41;H04N19/60;H04N19/625;H04N19/63;H04N19/85;H04N19/91;H04N19/93;(IPC1-7):H04N7/30 |
主分类号 |
G06T9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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