发明名称 |
Automatic focusing device of image pickup device and method of correcting zoom tracking curve |
摘要 |
The present invention is aimed to provide an autofocus device and a correction method of correcting a zoom tracking curve for an intermediate subject distance without increase in storage capacity. A plurality of zoom tracking curves L1(Z) and L2(Z) corresponding to a plurality of different subject distance and correction data alpha(Z) calculated in advance are stored in a memory 16. A control circuit 10 carries out a predetermined interpolation process using the stored plurality of zoom tracking curves and correction data to calculate a zoom tracking curve L(Z) corrected with respect to a subject distance differing from the plurality of subject distance. Tracking control of focus is carried out according to this calculated zoom tracking curve. |
申请公布号 |
AU2790297(A) |
申请公布日期 |
1997.12.09 |
申请号 |
AU19970027902 |
申请日期 |
1997.05.16 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
TADASHI OKAJIMA;KAZUHIKO SUGIMOTO |
分类号 |
G03B3/10;G02B7/10;G02B7/28;G03B13/34;H04N5/232 |
主分类号 |
G03B3/10 |
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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