Stephen Wolf

Abstract: Presents a computerized search method for determining the gain, level offset, active video shift, and video delay of a digital video transmission channel. The method uses digitized input and output NTSC video fields that have been time tagged with SMPTE time code. The primary applications of the method are (1) to produce estimates of channel gain, level offset, and active video shift when data from ANSI T1.801.03-1996 calibration test patterns are not available, and (2) to provide a dynamic method to measure these quantities in conjunction with video delay

Keywords: coding; digital; video; gain; level offset; calibration; delay; variable; compression; shift; dynamic

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Margaret H. Pinson
Institute for Telecommunication Sciences
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Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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