| 摘要 |
<p>There is disclosed a hands-free accessory for a use with a portable electronic device such as mobile phones comprising a central unit; at least one ear piece operably connected to the central unit by at least one retractable cord; a device connecting means operably connected to the central unit by a retractable cord; a reel assembly having first and second reels for retracting and retaining the said cords and is adapted to rotate in a common direction; an audio signal processing unit comprising an audio circuit, and is operatively connected to said device cord at one end and the at least one ear piece cord at the other end. The hands-free accessory further comprises: a spring assembly adapted to retract said cords in their respective reels; said audio signal processing unit is electrically connected to said cords by means of a sliding contact mechanism ensuring uninterrupted signal flow to and from the said cords whenever they are in rotation; and said audio signal processing unit is coupled with a user interface comprising actuating switches, for controlling the functions thereof by the user.</p> |
