Communication device, communication method, recording medium...

Details Communication device, communication method, recording medium... Communication device, communication method, recording medium...

2003-10-27

2009-12-01

Shah, Chirag G (Department: 2419)

Multiplex communications

Network configuration determination

C713S182000, C726S026000, C726S027000, C726S030000

Reexamination Certificate

active

07626943

ABSTRACT:
A data transmitting apparatus includes a transmitting unit that transmits a check packet to a data receiving apparatus, and a control unit that receives an acknowledgement message to the check packet. The acknowledgement message includes acknowledgement information based on shared data shared with the data receiving apparatus. The transmitting apparatus also includes a timer configured to determine whether a response time of the acknowledgement message is less than a predetermined time and a judgment unit that judges whether a subsequent content data transmitted to the data receiving apparatus will be limited in usage right based on a comparison result and the determination of the timer. If the acknowledgement message is not received, the judgment unit determines that the data receiving apparatus is connected to the data transmitting apparatus through a second network and subsequent content data transmitted is limited in usage right.

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