| 摘要 |
PURPOSE:To make a difference of resolution between a middle part and side parts unremarkably without provision of an overlap area at a sender side by applying band limit to a signal S1 with a high resolution part so as to generate a signal S2 and controlling the mixture ratio of the signals S1 and S2 in response to the location on the screen. CONSTITUTION:Y, I, Q signals through a filter is subject to a multiplication of (1-k) by using multipliers 321-323, while Y, I, Q signals not through a filter is subject to a multiplication of k by using multipliers 311-313 and the both are mixed by using adders 331-333, where (k) is a control signal generated by a control circuit 6 (O<=k<=1). Outputs of the adders 331-333 are converted into red, green and blue signals (R, G, B signals) by a matrix circuit 4 and outputted. In figure, the control signal (k) is selected as k=1 at sides and, the control signal (k) is selected as k=0 at the middle part in contact with the side and the control signal (k) is selected as k=1 at the part close to the center of the middle part. Thus, unnaturality at joints is improved. |
