Communications: electrical – Continuously variable indicating – With meter reading
Patent
1989-07-19
1990-07-24
Weldon, Ulysses
Communications: electrical
Continuously variable indicating
With meter reading
340826, 340827, 379271, H04Q 362, H04M 300
Patent
active
049440292
ABSTRACT:
A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and initial network crosspoints, illustratively by a connection arrangement of a two-stage, rearrangeable network. The class of combinatorial designs comprises designs of three types: (1) block designs, (2) orthogonal arrays, and (3) difference sets. Each of these is used in a unique manner to derive an advantageous pattern of permanent connections.
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Hwang Frank K.
Richards Gaylord W.
AT&T Bell Laboratories
Watland Ross T.
Weldon Ulysses
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