Patent ID: 8866647
Filing Date: 2014-10-21
Classification: H03M,H04L,H04N

Abstract:
1. A non-transitory computer-readable recording medium storing therein an information processing program causing a computer to execute: compressing sequentially and according to a Huffman tree, a character code to be compressed that is described in a file selected from a file group, wherein a leaf of the Huffman tree corresponding to the character code stores therein a pointer to a compression symbol map of the character code to convert the character code into a compression symbol of the character code; detecting access to the leaf of the Huffman tree at the compressing; identifying a compression symbol map of the character code to be compressed, among a compression symbol map group by a pointer stored in the accessed leaf, wherein the compression symbol map group has a bit string indicating for each character code, presence or absence of the character code in the file group; and updating a bit that indicates presence or absence of the character code to be compressed in the compression symbol map identified at the identifying the compression symbol map.