Network system and information communicating device with time correction

A information communicating device for communicating information with other information communicating devices through a communication network, the information communicating device comprising:

• a receiving means for receiving information comprising a first time information having a first time data attached with a first reliability data;
• and
• a transmitting means for transmitting information comprising a second time information having said first time information attached with a second reliability data to the communication network,
• wherein the second reliability data indicates a reliability of the first time information included in the second time information and the second reliability is calculated based on a device transmitting the information, and
• wherein the second reliability data comprises time required from the reception of the data to the transmission of the data in the device transmitting the information.

A network system for communicating accurate time information to a plurality of communicating devices comprising:

• a first communicating device receiving time information from a remote source and transmitting time data comprising the received time information adjusted by a processing time in the first communicating device;
• and
• a second communicating device receiving the transmitted time data and adjusting clock of the second communicating device using the received time data,
• wherein the processing time comprises a lapsed period of time from a moment when the first communicating device received the time information to a moment when the first communicating device is ready to transmit the received time information.