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US 2025/0158636 A1Published application
Delta-sigma modulation apparatus and delta-sigma modulation method
AssigneeNEC Corporation
InventorsDaisaku OGASAHARA, Masaaki TANIO
Life of this patent
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Abstract
A delta-sigma modulation apparatus divides an input signal into a plurality of signal blocks, inputs the plurality of signal blocks to a plurality of delta-sigma modulation circuits, and performs combining processing for combining a plurality of output signals from the plurality of delta-sigma modulation circuits.
Claims8
A delta-sigma modulation apparatus comprising:
- one or more memories storing instructions;
- and
- one or more processors configured to execute the instructions to divide an input signal into a plurality of signal blocks;
- implement a parallel circuit including two or more filter circuits arranged in parallel and configured to perform delta-sigma modulation processing on the plurality of signal blocks to output a plurality of output signals corresponding to the plurality of signal blocks, each of the two or more filter circuits including two or more delta-sigma modulation circuits including different initial values;
- and
- perform combining processing for combining the plurality of output signals,
- wherein the two or more delta-sigma modulation circuits in each of the two or more filter circuits are configured to perform the delta-sigma modulation processing on a same signal block to output one of the plurality of output signals and output an output selection signal for combining the plurality of output signals, and
- the one or more processors are further configured to execute the instructions to perform the combining processing using the initial values and the output selection signal from one of the two or more delta-sigma modulation circuits that processes a preceding signal block among the plurality of signal blocks.
5 more elements
A delta-sigma modulation method comprising:
- dividing an input signal into a plurality of signal blocks;
- inputting the plurality of signal blocks to two or more filter circuits to output a plurality of output signals corresponding to the plurality of signal blocks, the two or more filter circuits being arranged in parallel, each of the two or more filter circuits including two or more delta-sigma modulation circuits including different initial values;
- and
- performing combining processing for combining the plurality of output signals, wherein
- the delta-sigma modulation method further comprises:
- performing delta-sigma modulation processing on a same signal block to output one of the plurality of output signals and an output selection signal for combining the plurality of output signals, using the two or more delta-sigma modulation circuits in each of the two or more filter circuits;
- and
- performing the combining processing using the initial values and the output selection signal from one of the two or more delta-sigma modulation circuits that processes a preceding signal block among the plurality of signal blocks.
5 more elements
Dependencies are inferred from the claim text.