US 2019/0296757 A1 · SIGNAL PROCESSING DEVICE

Abstract

According to embodiments, a signal processing device includes an AD converter, a memory, a prediction logic circuit, an error amount detection circuit, and a selector. The AD converter converts an input signal to an AD conversion value at a certain sampling frequency. The memory stores an AD conversion output result. The prediction logic circuit predicts a prediction value by using the AD conversion output result at the sampling frequency. The error amount detection circuit determines that there is no error in error determination of the AD conversion value when an error amount between the prediction value and the AD conversion value is smaller than a predetermined amount, and that there is an error in the error determination when the error amount is equal to or larger than the predetermined amount. The selector outputs one of the AD conversion value and the prediction value as an AD conversion output result, on the basis of the error determination.

Claims19

Dependent claims

A signal processing device comprising:

an AD converter that converts an input signal to an AD conversion value at a sampling frequency;
a memory that stores an AD conversion output result;
a prediction logic circuit that predicts a prediction value by using the AD conversion output result at the sampling frequency;
an error amount detection circuit that determines that there is no error in error determination of the AD conversion value when an error amount between the prediction value and the AD conversion value is smaller than a predetermined amount, and that there is an error in the error determination when the error amount is equal to or larger than the predetermined amount;
and
a selector that outputs one of the AD conversion value and the prediction value as an AD conversion output result, on the basis of the error determination.

3 more elements

A signal processing device comprising:

an AD converter that converts an input signal to an AD conversion value at a sampling frequency;
a first memory that stores the AD conversion value;
a first prediction logic circuit that predicts a first prediction value by using the AD conversion value, at the sampling frequency;
a second memory that stores an AD conversion output result;
a second prediction logic circuit that predicts a second prediction value by using the AD conversion output result at the sampling frequency;
an error amount detection circuit that determines that there is no error in error determination of the AD conversion value when an error amount between the first prediction value and the AD conversion value is smaller than a predetermined amount, and that there is an error in the error determination when the error amount is equal to or larger than the predetermined amount;
and
a selector which outputs one of the AD conversion value and the second prediction value as an AD conversion output result, on the basis of an error detection signal output according to a result of the error determination.

5 more elements

Dependencies are inferred from the claim text.

Signal processing device

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Signal processing device

Life of this patent

Abstract

Claims19