| 摘要 |
PURPOSE:To halve the amount of memory for scramble signal, by taking a readout address as a write address of the next scramble signal. CONSTITUTION:A switching circuit 14 is switched alternately, also bring alternately picture element memories 141, 142 and field memories 151, 152 into the write state, a pattern of a scramble signal at a transmission side is changed alternately for an odd and an even number of times, the readout and write to memories at the receiving side are done alternately at a read/write control circuit 13, which takes a readout address generated at an address circuit 16 as a write address of the next scramble signal. |
