Multiplex communications – Diagnostic testing – Of a repeater
Patent
1997-11-06
2000-08-08
Vu, Huy D.
Multiplex communications
Diagnostic testing
Of a repeater
370501, H04J 116, H04J 314
Patent
active
06101169&
ABSTRACT:
A stack position determination circuit in a stackable repeater is disclosed that includes an input connector, an output connector, an initial pin driving circuit, and a pin rotating circuit. The input connector includes a plurality of input connector repeater stack position pins arranged in an hierarchical order so that each input connector repeater stack position pin corresponds to a possible physical position of the repeater in a stack of repeaters. An output connector includes a plurality of output connector repeater stack position pins arranged in an hierarchical order so that each output connector repeater stack position pin corresponds to a possible position of the repeater in a stack of repeaters. An initial pin driving circuit is connected to an initial pin in the input connector repeater stack position pin hierarchical order. The initial pin corresponds to a first position in the stack of repeaters and the initial pin driving circuit is responsive to an initial repeater signal. The initial repeater signal has a state that is indicative of whether the repeater is physically connected in the first position in the stack of repeaters. The pin rotating circuit is connected between the input connector and the output connector. The pin rotating circuit connects each of the plurality of input connector repeater stack position pins to a pin selected from the plurality of output connector repeater stack position pins such that the position of the selected output connector repeater pin is one position lower in the output repeater stack position pin hierarchical order than the corresponding position in the input repeater stack position pin hierarchical order of the input repeater stack position pin that is connected to the selected output repeater stack position pin.
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patent: 5388099 (1995-02-01), Poole
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Network Systems Tutorial for IEEE Std 802.3, Repeater Functions and System Design Topology Considerations for Carrier Sense Multiple Access with Collision Detection (CSMA/CD)Local Area Networks (LANs); Section 4, Repeater Functions, pp. 7-14 (1995).
International Standard ISO/IEC 8802-3: 1996(E) ANSI/IEEE Std 802.3, 1996 Edition; Carrier sense multiple access with collision detection (CSMA/DC) access method and physical layer specifications; Section 9, Repeater unit for 10 Mb/s baseband networks, pp. 125-155.
Cisco Technology Inc.
Trinh Dung
Vu Huy D.
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