Multiplex communications – Wide area network – Packet switching
Patent
1994-07-07
1996-01-02
Ray, Gopal C.
Multiplex communications
Wide area network
Packet switching
370 855, 370 8515, 34082505, 36424292, 364240, 3642401, 3642402, 364DIG1, G06F 1336
Patent
active
054816769
ABSTRACT:
A control system for controlling access to a bus (BU) by a unit (P) connected to the bus (BU), including a ring circuit in which a monoflop function element and one or more coupling elements are connected in-line, each coupling element associated with a respective unit. For controlling access, a logic signal of a first type is supplied into the ring by the monoflop function element, the logic signal being successively conducted via the coupling elements to the units seeking access to the bus. Access to the bus is only allowed when the coupling element senses a transition from a logic state of the first type to a logic state of a second type at its ring circuit input.
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Glaeser Winfried
Holzner Rudolf
Watzlawik Guenter
Ray Gopal C.
Siemens Aktiengesellschaft
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