发明名称 |
WIRELESS POWER TRANSMISSION AUDIO SYSTEM, TRANSMISSION SIDE DEVICE FOR USE IN THE SAME, AND LOUDSPEAKER |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide an audio system utilizing a wireless power transmission system capable of performing power transmission and sound reproduction suitably even when a distance between a loudspeaker and a main body changes. <P>SOLUTION: A transmission side device 1 of a wireless power transmission audio system has: a transmission signal generation part 9 generating a transmission signal formed from a high-frequency signal and a sound signal; a transmission side resonance circuit 91 having a resonance frequency equal to a frequency of the high-frequency signal; a detector 71 detecting change in the transmission signal; and a transmission signal adjustment part 98 controlling a signal waveform of the transmission signal. A loudspeaker 2 has: a reception side resonance circuit 92 receiving at least a part of the transmission signal transmitted from the transmission side resonance circuit 91; and a sound output part 66 reproducing the sound signal. At least one of the transmission side device 1 and the loudspeaker 2 has an impedance adjustment part 96 changing an impedance value of a path where the transmission signal is transmitted, depending on the change in the transmission signal detected by the detector 71. <P>COPYRIGHT: (C)2012,JPO&INPIT |
申请公布号 |
JP2012147417(A) |
申请公布日期 |
2012.08.02 |
申请号 |
JP20110244726 |
申请日期 |
2011.11.08 |
申请人 |
PANASONIC CORP |
发明人 |
KINOSHITA KEISUKE;KAWAMURA JUNICHI;OKAMURA SHUTA |
分类号 |
H04B5/02;H02J17/00;H04R1/06;H04R3/00 |
主分类号 |
H04B5/02 |
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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