Data transmission system using a human body as a signal transmission path

摘要

A touch-responsive data transmission system capable of elongating the battery life of the transceiver worn on the user's body yet assuring one-touch data transmission. The system includes a first transceiver to be worn on the user's body and a second transceiver connected to an associated equipment which utilizes data transmitted from the first transceiver. The first transceiver has a signal electrode and a ground electrode both for contact with the user's body, while the second transceiver has a single touch electrode which is touched by the user's body to establish a signal path extending through a portion of the user's body between the electrodes. The first transceiver includes a start signal detector for detection of a start signal received through the signal electrode from the second transceiver. The second transceiver includes a start signal generator which generates the start signal when the touch electrode is touched. Upon receiving the start signal, circuit elements responsible for data transmission are energized by an incorporated battery to start the data transmission from the first transceiver to the second transceiver. Thus, the circuit elements responsible for transmitting the data can be kept deenergized until the user touches the touch electrode of the second transceiver, thereby saving energy during non-operated condition and assuring a prolonged battery life of the first transceiver. Also, the transmission of the data can be made automatically simply by touching the touch electrode and without requiring any additional starting procedure.