| 摘要 |
<p>: The invention relates to a commutatinn device for the selective control of data transport. There are two data inputs and two data outputs, each of the latter comprising a buffer for storing, for example, each time a data word. A number of possibilities of data transport can thus be selectively controlled, i.e. four for a single connection and two different ones for pair-wise connection. There are also provided, for example, seven input control lines, i.e. two lines for receiving a signal which indicates whether information is present on the associated input line, two lines for indicating the selected output buffer, two erase lines for making a data buffer freely accessible after output of data from the data buffer, and one priority line for granting priority to one of the two input lines if both lines select the same data buffer. There are, for example, four output control lines, i.e. two lines which indicate that the data present on the input lines have been taken up in the selected output buffer, and two lines which indicate whether an output buffer contains data. Commutation devices of this kind can very quickly realise the data transport itself and can, moreover be grouped in a specific arrangement in order to form a breathing buffer or a device in which the data partly determine their own path (for example, in the case of sorting or associative searching).</p> |
