| 摘要 |
Systems and methods for incremental and conditional purchase and management of electronic books. In one embodiment, the incremental content purchase and management system allows downloading of electronic books to client devices with no upfront cost. Electronic books downloaded on a client device are divided into a plurality of segments based on the mode of consumption. User interaction with an electronic book is monitored to detect consumption, and to identify the segment being consumed. When a sufficient amount of electronic book segments is consumed, a charge corresponding the consumed electronic book segments is calculated using a charge model. The ownership of the consumed electronic book segments is then transferred to the user following the payment of the calculated charge. |
