Multiple pattern sequence generation based on inverting non-linear

Abstract

A sequence generator for generating multiple-pattern sequences utilizing an inverting non-linear autonomous machine is disclosed. The generation of the sequence is based on the interdependency relationship between the bits of the deterministic patterns in the sequences to be generated. The autonomous machine comprises a number of flip-flop cascades each containing a number of flip-flops. The flip-flops in each of the cascades are connected in a way that the output of one flip-flop is connected to the input of the next flip-flop in each cascade. The autonomous machine further comprises a number of XOR gates each feeding its output to the input of a corresponding one of the cascades of flip-flops. The autonomous machine further comprises a switch device that includes a number of switches for receiving the output of each of the flip-flops in the cascades as feedbacks for outputting to the inputs of the XOR gates. Each of the XOR gates is selectively added with an inverter for inverting its output before connecting to the corresponding one of the cascade of flip-flops. Each of the switches in the switch device is selectively programmed for connecting corresponding one of the feedbacks to the input of the corresponding one of the XOR gates.