发明授权
US07231658B2 Data transmission system, apparatus and method for processing information, apparatus and method for relaying data, storage medium, and program 有权
数据传输系统,用于处理信息的装置和方法,用于中继数据,存储介质和程序的装置和方法

Data transmission system, apparatus and method for processing information, apparatus and method for relaying data, storage medium, and program
摘要:
A transmitting-end terminal device transmits an electronic mail including large-size data such as video data to a transmitting-end cache via a transmitting-end router. The transmitting-end cache temporarily stores the received data. A POB server authenticates a user of the transmitting-end terminal device and determines whether a receiving-end terminal device can receive the electronic mail. If the authentication of the user is successful and if it is determined that receiving-end terminal device can receive the electronic mail, the transmitting-end cache transmits the electronic mail directly to the receiving-end cache without passing it through the POB server. The receiving-end cache stores the received electronic mail and transmits a message, indicating that the electronic mail has arrived, to the receiving-end terminal device. In response to a request issued by the receiving-end terminal device, the receiving-end cache supplies the electronic mail stored therein to the receiving-end terminal device.
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