Noise cancellation circuit, analog signal processing circuit, and electronic instrument
US8134255B2 · kind B2 · utility
1Cited by
1References
5Claims
0Family size
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Key dates
| Filing date | Dec 19, 2007 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Jan 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B15/005
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A cancellation signal generation section generates a cancellation signal which cancels an alternating-current component of a power supply terminal voltage of a digital signal processing circuit section, and a synthesis section synthesizes the generated cancellation signal and a power supply voltage of an analog signal processing circuit section to cancel noise superimposed on the power supply voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.