| 摘要 |
PROBLEM TO BE SOLVED: To provide an output circuit which can be connected to any of a stereo plug, a headphone plug with a remote controller, and an optical plug. SOLUTION: When a stereo plug is inserted into an output jack 14, operation voltage for an optical element block 143 is stopped to supply. An analog audio signal from a D/A converter circuit 12 is supplied to a plug through contacts 14L, 14R. When a headphone with a remote controller is inserted into the output jack 14, operation voltage for an optical element block 143 is stopped to supply. An analog audio signal from a D/A converter circuit 12 is supplied to a plug through contacts 14L, 14R, a remote control signal from a remote controller operation section is taken through the contact 14B. When an optical plug is inserted into the output jack 14, operation voltage is supplied to the optical element block 143, and a signal from the optical element block 143 is supplied to the optical plug. |
