1280 × 720 Progressive - A Re-Evaluation

Until last year, the only production system utilizing the 1280 × 720 image format proposed for use in the United States was the 787/788 line progressive-scan format. This was designed for a hybrid analog/digital transmission scheme which has been superseded, and was not optimized for coexistence with SMPTE 274M, the family of production systems utilizing the 1920 × 1080 image format. The author and his colleagues reviewed the format, and reworked it for compatibility with SMPTE 274M. The resulting system has the same clock rate as SMPTE 274M. All frames are 750 total lines, and there are 1650 luminance sample clocks per line. The SMPTE technology committee and working group responsible for ATV production standards have recently reached consensus that this 750-line system should replace the 787/788-line one.

Published

1995-02

Content type

Original Research

DOI

10.5594/M00832

ISBN

978-1-61482-922-5