| 摘要 |
PURPOSE:To eliminate interference to an existing television receiver and make high fidelity, high quality image reproduction possible by modulating and multiplexing significant information in a specific frequency area in the lower side-band of video signal carrier. CONSTITUTION:Both side-band waves are fC+ or - 0.75 MHz to video signal carrier fC. High precision information is superposed from fC-0.75 MHz to fC -1.25 MHz as significant information by, for instance, high precision information carrier fH. When such television broadcast wave is received by an existing receiving set, the characteristic is shown by a broken line, and the same one with presently used television signals is obtained. Accordingly, the high precision information multiplexed as significant information causes no hindrance. On the other hand, a high fidelity receiving set that utilizes high precision information can obtain high precision, high quality picture image by reproducing a picture image by using both presently used television signals and high precision information in combination. |
