| 摘要 |
PURPOSE:To perform a process of various color signals, by storing two kinds of color TV signals in the two pairs of picture element row storing means and then performing a level control through using the output given from a correlation circuit carrying out various types of operations as the keying signal. CONSTITUTION:The registers 1-4 store the digital color TV signal A and supply the outputs a0-a2 to the correlation operator 10. At the same time, the registers 5-9 store the digital color TV signal B and supply the outputs b0-b2 to the operator 10. The output of the operator 10 is supplied to the correlation signal generators 11-13 to be multiplied by the weight coefficient respectively, and then supplied to the keying signal generator 14 to obtain the keying signal. The digital TV signal level control circuits 15 and 16 are controlled by the keying signal, and the outputs of circuits 15 and 16 are added to obtain an output. |
