Abstract
A file is compressed by replacing its characters by codes that are dependent on the statistics of the characters. The character-to-code table, known as the dictionary, is typically incorporated into the compressed file. Popular compression schemes reach theoretical compression limit only asymptotically. Small files or files without much intra-file redundancy, either compress poorly or not at all. This disclosure describes techniques that achieve superior compression, even for small files or files without much intra-file redundancy, by independently maintaining the dictionary at the transmitting and receiving ends of a file transmission, such that the dictionary does not need to be incorporated into the compressed file.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Cooke, Simon, "Data compression using pre-generated dictionaries", Technical Disclosure Commons, (January 16, 2020)
https://www.tdcommons.org/dpubs_series/2876