Patent ID: 7856405

Claim:
A digital contents delivery method in a digital contents delivery server for delivering digital contents to a user at a client apparatus, the digital contents delivery server being provided with a transmitter for transmitting the digital contents to the client apparatus coupled to the digital contents delivery server via a network, comprising the steps of: receiving, from the client apparatus via the network, a command input to deliver digital contents; creating personal using condition information on a digital contents basis each time the digital contents are purchased, the personal using condition information including information as to delivery control of digital contents from the digital contents delivery server to the user, and client-side restriction information which is information as to processing control on use restriction to the digital contents to be executed by the client apparatus, the personal using condition information thus created being stored in a digital contents personal using condition management storage in a correspondence relationship manner with the digital contents; in response to the purchase of the digital contents, transmitting, by using the transmitter to the client apparatus, a delivery object in which the client-side restriction information is built in the digital contents; receiving, from the client apparatus, a display request input to display personal using condition information having a correspondence relationship with the user, thereby to display personal using condition information corresponding to the display request input; and enabling the transmitter to redeliver digital contents in which client-side restriction information according to the redelivery request input is embedded, when the redelivery request input from the user to redeliver the digital contents are sensed in connection with the personal using condition information thus displayed on the client apparatus, if the personal using condition information corresponding to the redelivery request input is valid among the personal using condition information stored in the digital contents personal using condition management storage.