Multipurpose earphone set

Details Multipurpose earphone set Multipurpose earphone set

2006-01-10

2006-01-10

Mei, Xu (Department: 2644)

Electrical audio signal processing systems and devices

Headphone circuits

C381S079000, C381S123000, C455S557000, C455S566000, C379S308000

Reexamination Certificate

active

06985592

ABSTRACT:
An earphone apparatus is designed for an audio device and a portable communication terminal device. The earphone apparatus includes a first plug for disconnectable connection with the audio device, and a second plug for disconnectable connection with the portable communication terminal device. An electroacoustical transducer connected to the first plug and the second plug is operative for converting a first electric signal transmitted via the first plug into corresponding sound, and for converting a second electric signal transmitted via the second plug into corresponding sound. A suitable controller provided between the first plug and the electroacoustical transducer is operative for controlling a level of the first electric signal transmitted to the electroacoustical transducer.

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