| 摘要 |
A data communication apparatus, having an error correction mode, for receiving data in units of predetermined data frames, and for, upon reception of an error frame, starting a procedure signal communication mode so as to cause a transmission-side apparatus to resend data, includes a detecting unit for detecting whether or not a significant frame is received within a first time during reception of data frames, and receiving unit for, when it is determined that the significant frame is not received within the first time, starting the procedure signal communication mode to detect reception of a procedure signal from the transmission-side apparatus.
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