| 摘要 |
PURPOSE:To generate the address of a picture memory rapidly with a simple circuit, by shifting the reading start address of the contents of a Y random number memory by one address in each completion of reading-out of random number data in an X random number memory. CONSTITUTION:When the 1st random number data are read out, a random number memory address counter 4 is counted up by ''1'' by a ready signal from a control part and the 2nd random data from the X random number memory 2 and the Y random number memory 3 are outputted as addresses AX2, AY2. When the random number data up to the n-th data from the memories 2, 3 are successively outputted as addresses AXn, AYn, a borrow signal is outputted from an n-down counter 6 and a reading start address shifting counter 5 for the memory 3 is counted up by ''1'', so that the address specification of the memories 2, 3 for the succeeding n-times is shifted by one by an adder 7. By repeating said operation until the counted value of the counter 5 reaches n, the address of the picture memory can be rapidly specified without repeating all the addresses of the nXn matrix of the picture memory 1. |
