发明名称 |
Method and apparatus to supply power voltage to a mobile device in a variable manner |
摘要 |
A method and apparatus to supply a power voltage to a mobile device in a variable manner in order to provide high output power and a high quality sound environment and a mobile device using the same. The apparatus includes a volume control unit to detect installation of an external power supply and to generate a voltage control value corresponding to a current volume level, and a DC-DC converter unit to convert a voltage of an internal power supply in a variable manner on the basis of the voltage control value generated in the volume control unit in order to drive the switching power amplifier. |
申请公布号 |
US8224399(B2) |
申请公布日期 |
2012.07.17 |
申请号 |
US20070651016 |
申请日期 |
2007.01.09 |
申请人 |
LEE JAE-CHEOL;PARK HAE-KWANG;SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE JAE-CHEOL;PARK HAE-KWANG |
分类号 |
H04M1/00;H01Q1/12;H04B1/16;H04M1/04 |
主分类号 |
H04M1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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