Patent ID: 9116562
Filing Date: 2015-08-25
Classification: G01C,G01D,G06F,H03K

Abstract:
1. A digital sample clock generator for generating a sample clock signal from an input signal derived from a drive measurement voltage signal of a vibrating MEMS gyroscope, the sample clock generator comprising: an oscillator arranged to generate a master clock with a master clock period; a synchronization unit arranged to detect a start of an input signal period of the input signal and to, upon detecting the start, generate a synchronization pulse in synchronization with the master clock; a counter unit arrange to count master clock periods between subsequent synchronization pulses to obtain the number of master clock between subsequent synchronization pulses as a number count; a multiplier arranged to multiply the number count with a pre-determined phase shift fraction to obtain a number of trim periods; and a delay unit arranged to generate the sample clock signal with a clock signal period corresponding to the number count and with a delay relative to the synchronization pulse corresponding to the number of trim periods.