Patent ID: 11876542
Assignee: UNIVERSITY OF TSUKUBA
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 9:
10. The data compression and decompression method according to claim 1, wherein
the compression apparatus registers the symbol in a first entry in the first table in a state where the first entry in the first table is in an empty state in a case where the entry having the symbol registered therein is not hit in retrieval of the symbol in the first table, and overwrites the symbol in the first entry in the first table in an overwriting manner when all entries of the first table are in use, and
the decompression apparatus registers the symbol in a first entry in the second table in a state where the first entry in the second table is in an empty state in a case where the entry having the symbol registered therein is not hit in retrieval of the symbol in the second table, and overwrites the symbol in the first entry in the second table in an overwriting manner when all entries of the second table are in use.