Invention Grant
- Patent Title: D/A conversion device, method, storage medium, electronic musical instrument, and information processing apparatus
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Application No.: US17706012Application Date: 2022-03-28
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Publication No.: US11764803B2Publication Date: 2023-09-19
- Inventor: Goro Sakata
- Applicant: CASIO COMPUTER CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz & Volek PC
- Priority: JP 2017005427 2017.01.16
- The original application number of the division: US16477504
- Main IPC: H03M3/00
- IPC: H03M3/00 ; G10H1/34 ; G10H7/08

Abstract:
A digital-to-analog conversion device which performs integration processing for integrating a difference between an input signal and a first return signal generated based on the input signal, and outputting an integration result, first quantization processing for quantizing the integration result, and outputting a first quantization signal, first return signal output processing for outputting the first return signal by adding to the first quantization signal a correction value delay signal acquired by a correction value signal outputted based on the integration result being delayed, and output processing for outputting output signals including a signal whose pulse width is asymmetrical to center of a processing period, based on the first quantization signal, in which the correction value signal includes a signal indicating a correction value for correcting a difference between a center of the pulse width asymmetrical to the center of the processing period and the center of the processing period.
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