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Multi-Terminal Discriminator Disclosure Number: IPCOM000038639D
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Jan-31

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Abramson, P Noel, FE Sriwudhthanun, P [+details]


This article describes a circuit arrangement which allows a single outlet in an office to support different types of data terminal equipment (DTE). The circuit arrangement analyzes the frequency spectrum of signals generated by the DTE and directs the signal to the respective systems. As can be seen in the drawing, each of the systems identified as Systems A, B, and C is coupled by respective FET switches to communications media 10. The signals on communications media 10 are outputted from a DTE (not shown) which wants to communicate with System A or System B or System C. A plurality of tuned circuits identified by numerals 12, 14 and 16 are connected through respective resistors to operational amplifier 18. Each of the tuned circuits is allowed to pass signals in the frequency range of a utilization system.