发明名称 |
METHOD AND APPARATUS FOR READING DATA WITH CCD AREA ARRAYS. |
摘要 |
<p>A method and apparatus for reading data in a data field on a data surface of a storage medium in which the data surface may be nonplanar and depthwise regions of the data field are brought one-by-one into the region of focus of a CCD area array. A set of partial images are formed which are then merged together into a composite image of the data field to be read. The storage medium is disposed on a vacuum chuck. Imaging optics, such as a single lens, zoom lens or lenticular array images regions of the data surface which are within a region of focusing onto the CCD area array. A piezoelectric device or a linear variable differential transformer serve as a Z-axis focussing element which responds to oscillator or electrical control signals to change the relative distance between the CCD area array and a reference plane of the data surface. The partial images formed are either merged in semiconductor memory by a processor or are merged automatically by the CCD area array.</p> |
申请公布号 |
EP0316341(A4) |
申请公布日期 |
1990.02.06 |
申请号 |
EP19870905051 |
申请日期 |
1987.07.07 |
申请人 |
DREXLER TECHNOLOGY CORPORATION |
发明人 |
DREXLER, JEROME;ARNOLD, JOSEPH, B. |
分类号 |
G03B13/36;G02B7/28;G06K7/10;G11B7/0033;G11B7/005;G11B7/13;H04N5/225;H04N5/232 |
主分类号 |
G03B13/36 |
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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