发明名称 Method and apparatus for eliminating lamp strobing in a digital input scanner
摘要 A method of eliminating strobing in successive scan lines of an image includes determining a nominal scan line time and an associated scan line integration time for the image sensor. A nominal illumination light source output period is determined for the illumination source. In order to ensure that the scan line integration time is equivalent to an integer number of illumination source light output periods, at least one of the nominal scan line integration time and the nominal illumination source light output period is adjusted. A clock signal, derived from the pixel clock, drives both the frequency circuitry of the lamp drive circuit and the integration time of the image sensor. The present method provides a reliable means for eliminating lamp strobing independent of the relative phasing of the lamp oscillation phase with respect to the start of each scan line integration.
申请公布号 US2003128404(A1) 申请公布日期 2003.07.10
申请号 US20020040718 申请日期 2002.01.07
申请人 XEROX CORPORATION 发明人 HERLOSKI ROBERT P.;TAILLIE JOSEPH P.
分类号 H04N1/028;H04N1/04;H04N1/047;(IPC1-7):H04N1/04 主分类号 H04N1/028
代理机构 代理人
主权项
地址