| 摘要 |
PROBLEM TO BE SOLVED: To switch a sound source and an output by optimum combination by identifying a cable connected in a connector of simple constitution. SOLUTION: By connecting the pin jack 13a of a cable 13, variance of connection status of the respective terminals 21-24 prepared in the connector 10 is detected with a detection unit 11, an internal sound source 5 and a tuner 6 are selected as a sound supply source, and an internal speaker 4 and a headphone speaker 14 are switched as an output source. COPYRIGHT: (C)2006,JPO&NCIPI
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