Kommunikationsdatenprozessor

摘要

Data received from a communication channel (12) is stored in a data area (200). A list area (202) corresponding to the data area (200) in which the communication data has been stored is deleted from a vacant list management area (204) and then added to a logical check list management area (206). A list area (202) corresponding to a data area (200) logically checked by a lower layer logical check section (40) is deleted from the logical check list management area (206) and then added to a higher layer protocol classification list management area (208). A list area (202) corresponding to a data area (200) classified by a higher layer protocol classification section (42) is deleted from the higher layer protocol classification list management area (208) and then added to the vacant list management area (204). When data relating to a protocol having an OSI model is to be processed, it is not required to perform the transfer of real data in a data storage.