Spread spectrum modulating device

摘要

In a spread spectrum modulating device according to the present invention transmission data are converted into parallel data by a serial-parallel converting circuit, which are held by a latch circuit and assign upper digit addresses. Lower digit addresses in the memory are assigned by a counter. Parallel data outputted by the memory are converted into analogue signals by a D/A converter, which analogue signals are multiplied by a carrier by a multiplier to obtain a spread spectrum signal. Owing to the construction described above, a simple and small scale construction can be realized for the spread spectrum modulating device.