| 摘要 |
PURPOSE:To attain rapid processing of data coupling operation by executing the data coupling processing like a pipe line even if key values are outputted so as to be overlapped in a data coupling circuit to be used for data base processing or the like. CONSTITUTION:Data of strings A, B are supplied like pipe lines, and at the time of detecting the coincidence of key values, a gate 5 is opened and a coupled data string is outputted to a storage device 6. When the overlap of the key values is detected by a comparator 2, a mode register 4 is set up to an overlap mode and the address of the current string A is saved in the register 3. When the string B is set up as the succeeding data, the string A is read out by the address saved in the register 3 and the comparison of key values is restarted based on the data of the string A.
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