Patent ID: 7496841

Claim:
A method, using a computer system, for generating a response to an unedited replica of an original document sent by a managing author to a contributing author for review, comprising: receiving said unedited replica at a client associated with said contributing author; forming a first revised replica by editing said unedited replica; partitioning said unedited replica into a first plurality of segments, wherein a segment of said first plurality of segments is delimited by a delimiter; sorting segments of said first plurality of segments into a binary tree based on a comparison operator; partitioning said first revised replica into a second plurality of segments; finding a best match for a segment of said second plurality of segments in said binary tree to form a block of at least one matching byte; creating a difference file, said difference file comprising: a plurality of copy packets and a plurality of difference packets, wherein said copy packets indicating position and length of said matched block, and said difference packets consisting of stream of bytes flanked by said copy packets; storing said difference file in memory at said client to be transmitted to the managing author; transmitting said difference file to a server associated with said managing author; reconstructing the first revised replica by finding in the original document said matched block using the memory position and length as indicated in the copy packets; and forming a second revised replica identical to the first revised replica by copying said matched block into the second revised replica and inserting the difference packets into the second revised replica.