Communications: electrical – Continuously variable indicating – With meter reading
Patent
1993-06-02
1994-08-30
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34082585, 379306, 348705, H04Q 100
Patent
active
053431936
ABSTRACT:
This invention provides a matrix switcher apparatus adapted to arbitrarily distribute signals in a plurality of input channels to a plurality of output channels. The matrix switcher apparatus includes a cross point matrix adapted for connecting one matrix switcher unit to any other matrix switcher unit or units to carry out expansion of input/output, and input and output terminals expandable up to a predetermined maximum number of channels. Further, this invention provides a matrix switcher apparatus comprising a first cross point matrix including a first group of input terminals to receive signals in a plurality of channels, and a first group of output terminals for at least some of the plurality of channels and a second group of output terminals for expansion to any other unit or units; and a second cross point matrix including a second group of input terminals coupled with the first group of output terminals and a third group of input terminals for receiving signals from one or more additional matrix switcher apparatus for expansion, and a third group of output terminals fewer in number than the plurality of channels, thereby making it possible to construct a matrix switching system on a compact scale or in any of a variety of scales, and to reduce its cost.
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Mizutani Tomoji
Shoda Akihiko
Usui Yoshinobu
Frommer William S.
Sinderbrand Alvin
Sony Corporation
Yusko Donald J.
Zimmerman Brian
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