Patent ID: 6938109

Claim:
In a system of two computers, the first computer including a known software file that is present for a purpose other than serving as a compression or decompression aid, the second computer including said known software file and a new file, a method of transferring the new file to the first computer, the method comprising: (a) on the second computer: pre-initializing an adaptive compressor in accordance with the entire known file on the second computer, said compressor adapting in accordance with input data that is applied to said compressor as said compressor's input data is processed; and applying the new file as input data to said compressor, said compressor generating update data; (b) transferring the update data from the second computer to the first computer; (c) on the first computer: pre-initializing a decompressor in accordance with the entire known file on the first computer, said decompressor adapting in accordance with input data that is applied to said decompressor as said decompressor's input data is processed; and applying the update data as input data to the decompressor, the decompressor generating the new file on the first computer.