US Patent 7895272 Data communication system and data communication method

A data communication system includes a video camera and a mail server. The video camera, which is provided with at least an e-mail sending/receiving function, attaches obtained original still image data to e-mail, adds a tag (editing tag), and sends the e-mail to a communication network. The mail server receives the e-mail sent from the video camera on the communication network, edits the original still image data attached to the e-mail based on the added tag, attaches the edited still image data to the e-mail, and sends the e-mail to a receiving personal computer.