发明名称 Detection, correction and display of illegal color information in a digital video signal
摘要 The present invention legalizes a video signal (e.g., 4:2:2 format) being processed in one format so that the video signal can be transformed to other formats (e.g., analog composite NTSC format). An editor can be notified of color legalities in a video signal. Further, each pixel of a video signal can be corrected to the nearest legal value by applying soft limits and gain slopes to a constant luminance color correction process. In accordance with the present invention, illegal colors of a video signal can be highlighted to provide an output drive for a video display which can be easily monitored by an editor. Alternate features of the present invention relate to error detecting and monitoring by assigning a specific, unique address to each video frame of a video signal. A further feature of the present invention relates to use of a pixel selecting means which receives 4:2:2 video data in either serial or parallel form. The data is converted to an analog component format and used to drive a video display monitor where the video image is displayed. The pixel selecting means can, for example, include a mouse/trackball input which is correlated to the video display monitor.
申请公布号 US5373327(A) 申请公布日期 1994.12.13
申请号 US19930023248 申请日期 1993.02.25
申请人 HEWLETT-PACKARD COMPANY 发明人 MCGEE, DANIEL R.;KLEIN, MATTHEW H.
分类号 H04N9/64;H04N9/88;(IPC1-7):H04N9/64 主分类号 H04N9/64
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