3 results about "Delta-sigma modulation" patented technology

A vibration rectification error correction device, a sensor module, and a method thereof, in order to generate data synchronized with a signal that is not synchronized with a reference signal, do not require a large circuit size synchronization circuit or a heavy load operation. The vibration rectification error correction device includes a reference signal generation circuit that outputs a reference signal; a frequency delta sigma modulation circuit that frequency delta sigma modulates the reference signal using a measured signal to generate a frequency delta sigma modulation signal; a first filter that is provided at a subsequent stage of the frequency delta sigma modulation circuit and that operates in synchronization with the measured signal; and a second filter that is provided at a subsequent stage of the first filter and that operates in synchronization with a first frequency signal that is not synchronized with the reference signal.

A system for determining one or more coefficients of a filter is presented. The system includes a modulated ramp generator including a ramp generator, a delta-sigma modulator coupled to the ramp generator and configured to generate a control signal, and a control output coupled to the delta-sigma modulator and configured to receive the control signal; and a filter coupled to the control output and configured to receive the control signal from the control output, the filter including one or more configurable coefficients, values of the configurable coefficients being selected by the control signal, an input for receiving a filterable signal, and an output for providing a filtered signal.

Disclosed is a circuit including: a loop filter to perform digital processing on a signal inputted from an outside; multiple quantizers to output 1-bit signals corresponding to magnitude relationships with thresholds on the basis of the signal after the digital processing by the loop filter; and an averaging circuit to calculate the average of the values shown by the signals outputted by the quantizers, and to feed back the average to the loop filter, in which the thresholds used by the quantizers differ from one another.