System and method for transmitting needed portions of a data file between networked computers
US9419801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2009 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | May 28, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for communicating a data file between networked computers is disclosed. The method includes the operation of requesting a data file consisting of a plurality of file blocks to be transferred from a source computing device to a destination computing device. A hash signature for each of the plurality of file blocks of the data file is sent from the source computing device to the destination computing device. It can be determined which of the file blocks of the data file are already located on the destination computing device based on the hash signature of each file block. The remaining file blocks can be transferred from the source to the destination computing device. The file can be constructed at the destination computing device from the plurality of file blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.