| 摘要 |
PURPOSE: An apparatus for transmitting a living body signal by wireless is provided to support wireless transmission environment with high quality and a communication with high quality irrespective of an one-to-many communication or a bidirectional communication, and a building or transmission environment. CONSTITUTION: Electrode units(100-109) have two or more electrodes for detecting living body signals. A differential amplifying unit(140) amplifies the difference of an electric signals detected in the electrode units(100-109). An HPF(High Pass Filter)(150), an LPF(Low Pass Filter)(152), and a trap filter(153) extract only the signal of a desired band from the amplified signal. A sample and hold circuit(180) converts the signals from a plurality of channels output from the trap filter(153) into information with a serial type. A comparator(200) selects one among a plurality of channels of the sample and hold circuit(180) and outputs a value which is higher than a specific reference voltage value. A counter(201) counts compared information of the comparator(200). An A/D converter(400) converts information with the serial type converted in the sample and hold circuit(180) into digital information. A microprocessor(500) converts converted digital information according to a Bluetooth communication standard and processes information for displaying information on an external display device(501). A Bluetooth radio and baseband processing device(609) converts data for transmitting digital information from the microprocessor(500) by wireless. A transmitter balun(604), an RF(Radio Frequency) power amplifier(605), a transceiver RF switching unit(606), a BPF(Band Pass Filter), and an antenna(608) transmit the signal from the Bluetooth radio and baseband processing device(609) by wireless.
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