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    • 6. 发明授权
    • Exposure control for a CCD scanner
    • CCD扫描仪的曝光控制
    • US07064872B1
    • 2006-06-20
    • US09414383
    • 1999-10-07
    • Paul L Jeran
    • Paul L Jeran
    • H04N1/04H01L27/00
    • H04N1/02815G03B27/14H04N1/02835H04N1/40056
    • A scanner is disclosed that operates to maintain the image sensor in the scanner at a proper exposure level during the scanning of a page despite variations in the scan rate. The scanner includes an illumination system operable to produce light in response to receiving power and to project the light, as a scanning light, onto the page being scanned. In addition, the scanner includes apparatus for moving the scanning light relative to the page at a scan rate, an image sensor for measuring the light reflected from the page and an exposure control device for controlling the exposure of the image sensor. The exposure control device operates to control the exposure of the image sensor by regulating the power in relationship to the scan rate.
    • 公开了一种扫描仪,其操作以在扫描页面期间将图像传感器保持在扫描仪中的适当曝光水平,同时扫描速率有变化。 扫描器包括可操作以响应于接收功率产生光的照明系统,并将光作为扫描光投影到被扫描的页面上。 此外,扫描仪包括用于以扫描速率相对于页面移动扫描光的装置,用于测量从页面反射的光的图像传感器和用于控制图像传感器的曝光的曝光控制装置。 曝光控制装置通过调节与扫描速率相关的功率来操作图像传感器的曝光。