发明授权
US5111062A Method and apparatus for reducing pixel clock jitter in a laser scanner
失效
用于减少激光扫描仪中的像素时钟抖动的方法和装置
- 专利标题: Method and apparatus for reducing pixel clock jitter in a laser scanner
- 专利标题(中): 用于减少激光扫描仪中的像素时钟抖动的方法和装置
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申请号: US751391申请日: 1991-08-28
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公开(公告)号: US5111062A公开(公告)日: 1992-05-05
- 发明人: Timothy M. Hunter , Hung M. Pham , John L. Zanghi
- 申请人: Timothy M. Hunter , Hung M. Pham , John L. Zanghi
- 申请人地址: CT Stamford
- 专利权人: Xerox Corporation
- 当前专利权人: Xerox Corporation
- 当前专利权人地址: CT Stamford
- 主分类号: H04N1/113
- IPC分类号: H04N1/113 ; H04N1/053 ; H04N1/12
摘要:
An apparatus and method of reducing pixel clock jitter in a raster scanner having a oscillator which generates a pixel clock signal and a start of scan sensor for generating a start of scan signal, includes the generation of an inverted pixel clock signal and an inverted start of scan signal. Based on which of the pixel clock signal or the inverted pixel clock signal has a rising edge closer to the start of scan signal, one of the pixel clock or inverted pixel clock signal is selected to replace the original pixel clock signal. Further selections are prevented from occurring until a subsequent start of scan signal is detected.
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