Communication device and method

Application Number: 00106919
Application Date: 2000.04.21
Publication Number: 1311565
Publication Date: 2001.09.05
Priority Information: 2000/2/29 EP 00301589.8
International: H04B1/38
Applicant(s) Name: Digital Pacific International Holding Co., Ltd.
Inventor(s) Name: Luo Bing'an
Patent Agency Code: 11038
Patent Agent: fu jianjun
Abstract The invention describes a communicatino device offering wireless two-way audio link circuit between user and audio device as well as the corresponding communication method. It is best for said communication device to provide operatino without using hand for mobile telephone by the way of telephone headset and base unit, with have small-sized RF receiver-transmitter to communicate each other on common frequency channel by the mode of time division duplex [TDD]. The frequency channel is best in the range of 2400 MHz to avoid the typical working frequency of mobile telephone, the power rediated by base unit and telephone headset is in the range of 10 mw, thus to offer wireless link circuit with short distance and low power to mobile telephone, no link circuit and can protect users from being harmful to be health.