Hi-fi audio device and method of removing noise of power supply
US9712260B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2015 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Dec 29, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B15/005
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A hi-fi audio device for reproducing and outputting a hi-fi sound source, the hi-fi audio device including: an operation unit configured to operate the hi-fi audio device; and a power supply unit comprising: an alternating current (AC) power supply unit configured to rectify alternating current supplied from an external power supply into first direct current and supply the first direct current to the operation unit; and a battery unit configured to supply second direct current to the operation unit, wherein the operation unit receives the first direct current and drives the hi-fi audio device when the operation does not reproduce a sound source, and receives the second direct current and drives the hi-fi audio device while the operation unit reproduces the sound source, and while the sound source is reproduced, the supply of the first direct current to the operation unit is blocked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.