Nippon Hoso' Kyokai

Hiroyuki Hamazumi

Yutaka Tanaka

Shoichi Suzuki

Yoshio Takeuchi

Yoshinori Izumi

Seiichi Gohshi

Taiichiro Kurita

Taiji Nishizawa

Kazuhiko Shibuya

Junji Kumada

Kazumasa Enami

Isao Kondo

Makoto Okui

Yasuaki Kanatsugu

Minoru Honda

Ryoichi Yajima

Haruo Okuda

Hisakazu Kato

Ichiro Yuyama

Makoto Tadenuma

Sumio Yano

High resolution vertical and horizontal components of a high definition video signal are combined with a standard broadcast system video signal, such as the NTSC system, in which high frequency horizontal resolution components are sampled and used to modulate at least a first sub-carrier signal. The first sub-carrier is frequency interleaved onto the standard broadcast signal. Vertical high resolution components are time compressed and time division multiplexed onto top and bottom portions of the standard broadcast signal. The modified broadcast signal can be decoded by a standard receiver to display a standard resolution video image, while receivers designed to decode the modified signal can time division demultiplex the vertical high resolution components and demodulate the horizontal high resolution components, combine these components with the standard components, and generate a high definition video image.

Receiver and channel compatible encoding/decoding system for high

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Tokyo, Japan

Hiroyuki Hamazumi