Patent ID: 7388864
Filing Date: 2008-06-17
Classification: H04L

Abstract:
1. A data communication apparatus comprising: a first communication part which transfers data from one single transfer source to a plurality of other transfer destinations concurrently; a second communication part which transfers data from one single transfer source to another single transfer destination; a re-transfer part which, when receiving reception error information from at least one of a plurality of other transfer destinations which indicates that data reception has not been performed properly as a result of the data transfer being performed by said first communication part for the plurality of other transfer destinations, performing data re-transfer to said at least one of other plurality of transfer destinations with one selected from said first and second communication parts according to the number of said at least one of other plurality of transfer destinations which has transmitted the reception error information, wherein upon selection of said first communication part, prior to performing said data re-transfer, an ignore instructions is communicated to that portion of said plurality of transfer destinations which did not transmit reception error information.