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

Claim 8:
9. The data compression and decompression method according to claim 1, wherein
the compression apparatus registers the symbol in a leading entry in the first table in a case where the entry having the symbol registered therein is not hit in retrieval of the symbol in the first table in a state where all entries of the first table are in use, and moves a symbol, which is registered in an entry between the leading entry and one entry prior to a last entry in the first table, to a next entry to delete a symbol in an entry registered at an end, and
the decompression apparatus registers the symbol in the leading entry in the second table in a case where the entry having the symbol registered therein is not hit in retrieval of the symbol in the second table in a state where all entries of the second table are in use, and moves a symbol, which is registered in an entry between the leading entry and one entry prior to a last entry in the second table, to a next entry to delete a symbol in an entry registered at an end.