Communication system and receiver used in communication system
View Patent ↗A communication system is provided comprising a living body-side electrode which primarily capacitively couples with a living body, an environment-side electrode which primarily capacitively couples with an external environment, and a circuit board on which a circuit which processes a signal which is output from at least one of the living body-side electrode and the environment-side electrode is mounted, wherein the circuit board is not placed between the living body-side electrode and the environment-side electrode.
1. A communication system for enabling communication between a transmitter which is portable and a receiver which is fixed, using a capacitive coupling through a living body, wherein
the receiver comprises:
a living body-side electrode which primarily capacitively couples with a living body;
an environment-side electrode which primarily capacitively couples with an external environment; and
a circuit board on which a circuit which processes a signal which is output from at least one of the living body-side electrode and the environment-side electrode is mounted, and
the circuit board is not placed between the living body-side electrode and the environment-side electrode.
2. The communication system according to claim 1 , wherein
the living body-side electrode and the environment-side electrode are plate-shaped electrodes, and are placed opposing each other so that at least a part of the electrodes overlap each other.
3. The communication system according to claim 2 , wherein
the circuit board is placed so that the circuit board overlaps at least a part of the living body-side electrode and the environment-side electrode.
4. The communication system according to claim 1 , wherein
the circuit includes a differential amplifier circuit which amplifies a potential difference between the living body-side electrode and the environment-side electrode.
5. A portable receiver which is used in a communication system for enabling communication between a transmitter which is portable and a receiver which is fixed, using a capacitive coupling through a living body, the receiver comprising:
a living body-side electrode which primarily capacitively couples with a living body;
an environment-side electrode which primarily capacitively couples with an external environment; and
a circuit board on which a circuit which processes a signal which is output from at least one of the living body-side electrode and the environment-side electrode is mounted, wherein
the circuit board is not placed between the living body-side electrode and the environment-side electrode.