H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/34
H04N 7/00 (2006.01) H04N 7/015 (2006.01) H04N 7/08 (2006.01)
Patent
CA 2027549
The present invention is ingeniously conceived for a transmission system for a first television signal so as to enable a first television signal of a wide aspect screen to be transmitted in one channel and the trans- mitted television signal to be reproduced on a receiver of a conventional aspect screen. To this end, a screen dividing circuit divides a wide aspect screen signal into a center panel signal and side panel signals. The center panel signal is supplied via a delay circuit to an adder. The side panel signals are so allocated as to provide horizontal and vertical signals. The horizontal side signal is supplied via a horizontal overscan multiplexing circuit to the adder where it is multiplexed on a hori- zontal overscan area of the center panel signal. In the vertical overscan multiplexing circuit, the vertical side signal is time compressed and reverse processed for each line to provide it in a continuous form. The output of a vertical overscan multiplexing circuit is supplied to a switch where it is time division multiplexed on vertical overscan areas of the center panel signal which is sent from the adder via a delay circuit .
Kawai Kiyoyuki
Kimata Yoshihide
Ogawa Yoshihiko
Sugimori Yoshio
Kabushiki Kaisha Toshiba
Marks & Clerk
Nippon Television Network Corporation
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