Speaker module connectable to an earphone jack of mobile phone and method for using same
AssigneeSK Teletech Co., Ltd.
InventorDong-il Lee
Life of this patent
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Abstract
The present invention provides a speaker module connectable to an earphone jack of a mobile phone and a method for using same. The speaker module comprises a microphone which converts voice signals into electrical signals, a speaker which converts electrical signals into acoustic signals, an amplifier which amplifies electrical signals, and a plug for connecting with the earphone jack of the mobile phone. Further, the plug can additionally comprise a terminal for sensing whether or not the speaker module is connected to the earphone jack terminal of the mobile phone.
Claims5
A speaker module comprising:
- an amplifier which amplifies voice signals transmitted from a mobile phone;
- a speaker which converts electrical signals from said amplifier into acoustic signals;
- a microphone which converts voice signals into electric signals;
- and
- a plug for connecting with the earphone jack of the mobile phone.
A method for communication with a mobile phone using a speaker module equipped with a plug adapted to be connected to the mobile phone via an earphone jack of the mobile phone, wherein the plug includes a first terminal for transmission of voice signals from said mobile phone to said amplifier, a second terminal for transmission of voice signals from said microphone to said mobile phone, a third terminal for sensing whether a speaker module is installed and functions as a ground, and a fourth terminal for supplying power to said speaker module, the method comprising the steps of:
- inserting the plug of the speaker module into the earphone jack of the mobile phone;
- disconnecting said first terminal of the plug from said third terminal of the plug;
- switching logical level of said third terminal of the plug from High to Low;
- connecting an audio path from a receiver of the mobile phone to said first terminal of the speaker module;
- and
- supplying power to the speaker module from the mobile phone.
Dependencies are inferred from the claim text.