Tape cassette and tape recording and/or reproducing apparatus

摘要

A tape streamer device in which the current arraying state of partitions formed on a tape-shaped recording medium can be known even on addition or deletion of partitions. Includes a recording and/or reproducing unit 130 and a write/readout controller 163. The recording and/or reproducing unit 130 has a partition rewriting portion for rewriting the partitions and a data recording and/or reproducing portion for the partitions. The recording and/or reproducing unit 130 has the function of controlling the recording and/or reproducing portion based on the arraying information stored in a memory-in-cassette unit for recording and/or reproducing data. The write/readout controller 163 has the partition arraying information writing function of storing the arraying information indicating the arraying of the partitions in the magnetic tape 12 in the memory-in-cassette unit.