An experimental color-under VCR for IDTV/EDTV system

An experimental color-under VCR for improved-definition TV/enhanced-definition TV (IDTV/EDTV) systems which can record and reproduce the full NTSC-bandwidth TV signal has been developed. To be adaptable for IDTV/EDTV systems, the VCR should have a full NTSC bandwidth (4.2 MHz) and standard NTSC output (without skew and jitter). In current VCRs the bandwidth of the reproduced signal is not generally sufficient to meet above requirement. Improvement has been achieved by reproducing the high-frequency luminance signal included in the color-under chrominance signal without any amplitude and phase distortion, providing full NTSC video bandwidth without any time base error. A 330-line-resolution picture has been obtained with an IDTV set.<
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