Data modulation with provision of a symbol timing reference

摘要

A bit encoding system for use with a bus (7) of a distributed microcontroller network (200,300), includes a waveform generator (100) for generating a substantially sinusoidal waveform. A modulation arrangement (340, 341) is arranged to amplitude modulate the waveform between first and second amplitudes to define first and second data values. A zero crossing point of the waveform is used to define timing information for the bus (7). <IMAGE>