Patent ID: 6460163
Filing Date: 2002-10-01
Classification: H04L

Abstract:
A method for transporting a digital content item between an order fulfillment server and a client computer, the method on the server comprising:dividing a digital content item into a sequence of successive data blocks; associating a corresponding unique sequential marker for each of the successive data blocks; computing a first checksum for each of the successive data blocks at an application level which uses the digital content whether or not a checksum is calculated at a communications transport level; transmitting each of the sequence of successive data blocks along with the corresponding unique sequential marker to a client computer; and re-transmitting at least one of the sequence of successive data blocks if the client computer computes a second checksum for each of the successive data blocks at an application level of the digital content item and the server computer determines that the first checksum is not equal to the second check sum for at least one of the sequence of successive data blocks.