发明名称 |
VERFAHREN ZUM ERFASSEN EINES BILDSIGNALS |
摘要 |
In a method for detecting an image signal by means of an array (30) of photosensitive devices (10) with each of which the charge of a capacitance (12) can be altered, an optical signal (20) of each photosensitive device is first detected by means of the following substeps: creating a charge condition of the capacitance with a predetermined voltage (+U_DD), changing the charge of the capacitance (12) either with a photocurrent generated in the photosensitive device (10) by the optical signal (20) or with a quantity derived from the same and detecting the voltage across the capacitance (12) after a predetermined time period, deciding whether the detected voltage lies within a valid range and, if this is so, determining on the basis of the detected voltage a valid signal which characterizes the detected optical signal, and, if this is not so, repeating the cited steps with a time period which differs from the predetermined time period either a predetermined number of times or until it is determined that the detected voltage lies in a valid range. Subsequently the optical signal detected for each photosensitive device (10) is stored together with the time period for which a valid signal has been detected. Finally the image signal is obtained from the stored optical signals for the individual photosensitive devices and the respective assigned time periods. |
申请公布号 |
DE59702357(D1) |
申请公布日期 |
2000.10.19 |
申请号 |
DE1997502357 |
申请日期 |
1997.10.24 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV;BAYERISCHE MOTOREN WERKE AG;BODENSEEWERK GERAETETECHNIK GMBH |
发明人 |
SCHANZ, MICHAEL;HOSTICKA, BEDRICH;WERTHEIMER, REINER;KISAKUEREK, HAKAN |
分类号 |
H04N5/335;H01L27/146;H04N3/15;H04N5/353;H04N5/355;H04N5/374;H04N5/3745;(IPC1-7):H04N3/15 |
主分类号 |
H04N5/335 |
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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