| 摘要 |
PURPOSE:To obtain a circuit with simple constitution generating plural spurious noise not correlated to each other in a prescribed period by providing n-set of flip-flop circuits to clock input terminal of which one pulse signal among n-set of pulse signals is received respectively and to other signal input terminal of which an M-series signal is received rspectively. CONSTITUTION:A pulse output (a) of a clock pulse generating circuit 2 is inputted to a clock input terminal of each shift register of an M-series signal generating circuit 1 and a clock pulse phase shift circuit 3. The clock pulse phase shift circuit 3 produces pulse trains c-1, c-2-c-n having different phase. In the Figure, 4-1, 4-2-4-n are D flip-flops and the pulses c-1,c-2-c-n are applied respectively to the clock input terminals. Outputs d-1, d-2-d-n of the D flip-flop circuits 4-1, 4-2-4-n switch an irregular pulse signal train (M series signal e) of the M series signal generating circuit 1 by the pulse trains c-1, c-2-c-n having different phase. The outputs become irregular pulse signal trains not correlated to each other in a prescribed period. |
