TRANSMITTING AND RECEIVING METHOD, TRANSMITTING AND RECEIVING SYSTEM, TRANSMITTING APPARATUS, AND RECEIVING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a communication means capable of efficiently performing the retransmission control of missing data and easily determining the communication state or the ending time of data transmission processing, and capable of efficiently and easily performing the sequence control of packets.

SOLUTION: A transmitting-side creates a file storage table 52a constituted of unit tables UTi in a predetermined size, and divides an image file F into the predetermined unit size, stores the divided image file F while adding Number information Ni or the like thereto and sequentially transmits them. A receiving side creates a file storage table 52b in the same configuration as the file storage table 52a from file information received beforehand, stores received data respectively in a place corresponding to the number information Ni, and transmits to the transmitting side a receiving notice RNi which shows the number information Ni of the received data. The transmitting side discards the unit tables UTi corresponding to the received receiving notice RNi and retransmits data of the remaining unit tables UTi.

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