Method for transmitting information, communication device, portable device and communication system

A communication device applied to a portable device, comprising:

• a first coupling electrode;
• a first transmitting circuit and a first receiving circuit, which are connected to the first coupling electrode, respectively;
• wherein the first transmitting circuit is configured to transmit information to an opposite end in an electric field coupling manner through the first coupling electrode and a second coupling electrode at the opposite end, and the first receiving circuit is configured to receive information transmitted by the opposite end in an electric field coupling manner through the first coupling electrode and the second coupling electrode;
• wherein the portable device is a first earphone in a pair of wireless earphones, the first coupling electrode is disposed at a rod part of the first earphone, or the first coupling electrode is a conductive component of the first earphone;
• wherein the communication device further comprises:
• a processing unit configured to:
• determine whether the pair of the wireless earphones are worn by a same user;
• and
• control the first earphone to independently upload voice information when the pair of the wireless earphones are not worn by the same user.

A portable device, comprising a communication device;

• wherein, the communication device comprises:
• a first coupling electrode;
• a first transmitting circuit and a first receiving circuit, which are connected to the first coupling electrode, respectively;
• wherein the first transmitting circuit is configured to transmit information to an opposite end in an electric field coupling manner through the first coupling electrode and a second coupling electrode at the opposite end, and the first receiving circuit is configured to receive information transmitted by the opposite end in an electric field coupling manner through the first coupling electrode and the second coupling electrode;
• wherein the portable device is a first earphone in a pair of wireless earphones, the first coupling electrode is disposed at a rod part of the first earphone, or the first coupling electrode is a conductive component of the first earphone;
• wherein the communication device further comprises:
• a processing unit configured to:
• determine whether the pair of the wireless earphones are worn by a same user;
• and
• control the first earphone to independently upload voice information when the pair of the wireless earphones are not worn by the same user.