发明名称 |
Transmitter and automobile audio apparatus using the same |
摘要 |
A transmitter for transmitting an audio signal derived from an audio appliance to an FM (frequency modulation) radio includes a transmitter circuit for converting the audio signal derived from an audio appliance into an FM signal within an FM broadcasting band to thereby transmit the FM signal, a receiver circuit having at least a tuner unit; a display for displaying thereon a frequency; and a control circuit for controlling a transmission frequency of the transmitter circuit and a reception frequency of the receiver circuit. The control circuit causes the receiver circuit to detect an unused frequency within the FM broadcasting band and to set a frequency corresponding to the detected unused frequency to the transmission frequency, and also causes the display to display thereon the set transmission frequency.
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申请公布号 |
US5970390(A) |
申请公布日期 |
1999.10.19 |
申请号 |
US19980168122 |
申请日期 |
1998.10.07 |
申请人 |
SONY CORPORATION |
发明人 |
KOGA, NORIYUKI;NAKAGAWA, NOBORU |
分类号 |
H04B1/04;G11B31/00;H04B1/034;H04B1/20;H04B1/38;(IPC1-7):H04H5/00 |
主分类号 |
H04B1/04 |
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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