H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
344/26
H04Q 3/54 (2006.01) H04Q 3/545 (2006.01)
Patent
CA 1067987
ABSTRACT OF THE DISCLOSURE Apparatus for establishment of a connection between a certain input or input channel and a certain output or output channel by rearrangement of a three-stage switching network where, in a specific network condition, each network input or input channel is assigned to a specific network output or output channel. The desired connection is derived by means of success- ive permutation of the connections within the switching stages until the desired connection has been attained. The apparatus includes a special switching memory wherein the actual network condition is recorded. The organization of the memory is such that the various memory cells are addressed according to the numbering of the interstage links on one side of the central swit- ching stage and each of the cells has a record of which network input and network output is interconnected via the link in question. The apparatus further includes means for identifica- tion of the addresses being involved in the desired connection and for subsequent determination and execution of the necessary permutations, based on these addresses.
242005
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