US Patent 11334605 Incremental update of compressed navigational databases

A computing device may identify a plurality of equally sized data blocks of a first navigation file and may identify a plurality of equally sized data blocks of a second navigation file. The computing device may perform binary difference operations between the data blocks of the first navigation file to corresponding data blocks of the second navigation file The result of the binary difference operations is stored in a plurality of navigation patch files. At least two of the plurality of navigation patch files are merged into a merged navigation patch file.