发明名称 Image scanning apparatus.
摘要 <p>Image scanning apparatus comprises a radiation source to generate a radiation beam, a support (1) on which an original image (2) is mounted in use so that the radiation beam is incident, in use, on the original image, the support and the beam being continuously movable relative to one another in a cyclic manner to expose successive scan lines on the original image. A detector (4) is provided for detecting the radiation beam after exposure to the original image. A buffer (6) receives image signals corresponding to a valid scan line of the original image at a first rate from the detector (4) during exposure of the scan line and outputs all the image signals corresponding to a valid scan line at a second slower rate to a processor (7) within one cycle of the relative motion between the support and the radiation beam. The buffer (6) is prevented from storing signals from the detector when a valid scan line of the original image is not being exposed. &lt;IMAGE&gt;</p>
申请公布号 EP0430494(A1) 申请公布日期 1991.06.05
申请号 EP19900312441 申请日期 1990.11.15
申请人 CROSFIELD ELECTRONICS LIMITED 发明人 OLDERSHAW, ROBERT JOHN
分类号 H04N1/19;G06T1/00;H04N1/00;H04N1/04;H04N1/06;H04N1/32 主分类号 H04N1/19
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