发明名称 |
Scanning read-out apparatus with scanning speed fluctuation compensating means and correction coefficient adjusting method. |
摘要 |
<p>A scanning read-out apparatus comprises a device for detecting the scanning speed of a light beam and generating a scanning speed signal, and a device for calculation between a read-out signal detected by scanning of a read-out objective and the scanning speed signal and for generating a corrected read-out signal representing the result of the calculation. A coefficient for correction of the read-out signal is adjusted by forcibly fluctuating the scanning speed of the light beam on a read-out objective for correction coefficient adjustment, generating a correction signal by multiplying the scanning speed signal by an arbitrary coefficient, correcting the read-out signal by using the correction signal, extracting a signal of a noise component caused by the forcible fluctuation from the corrected read-out signal, finding the coefficient at which the extracted signal becomes the minimum, and using the coefficient thus found as the correction coefficient.</p> |
申请公布号 |
EP0174659(A2) |
申请公布日期 |
1986.03.19 |
申请号 |
EP19850111540 |
申请日期 |
1985.09.12 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
FUKAI, NOBUTAKA C/O FUJI PHOTO FILM CO., LTD.;AGANO, TOSHITAKA C/O FUJI PHOTO FILM CO., LTD. |
分类号 |
H04N1/401 |
主分类号 |
H04N1/401 |
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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