Data communicating apparatus.

摘要

The data communicating apparatus subdivides an information message into data blocks each having a predetermined length. When the number of data block transmission errors exceeds a fixed value, the data block to be subsequently transmitted (including a data block to be retransmitted) is further subdivided into small data blocks for the subsequent transmission. As a result, the error occurrence ratio is lowered and the data communication can be continued even under an unfavorable communicating condition.