A 6-MHz NTSC-Compatible Widescreen Television System with Pan-and-Scan Capability

S. Inoue, S. Kageyama, H. Uwabata, Y. Yasumoto, Y. Abe

The proposed 6-MHz NTSC-compatible widescreen television system, using quadrature amplitude modulation of the video carrier and an inverse Nyquist filter, now has pan-and-scan capability. This article reviews the principle of quadrature amplitude modulation and describes how to select a center panel and side panels from an original widescreen image. Techniques are also discussed, such as scattering, frequency inversion, and level conversion, for reducing multiplex signal interference in a conventional receiver using an envelope detector.

Print ISSN
Published
1990-08
Content type
Original Research
DOI
10.5594/J02611