Star local-area network system
First Claim
1. A star local-area network system comprising a plurality of data stations and a circuit switching unit for switching connections between the data stations, wherein said circuit switching unit comprises:
- a plurality of ports to which said plurality of data stations are connected;
table means in which each port has a storage area for storing the address assigned to each data station;
address registration means for, when said circuit switching unit receives a registration command from each of said data stations, entering a source address contained in the command in said storage area corresponding to the port which received the command;
switching means installed between said plurality of ports, for switching the connection between the ports; and
switch controlling means for referring to said table means to detect the port corresponding to a destination data station specified by a destination address contained in a received message data, and then controlling said switching means to that the port which received said message data can be connected to the port to which said destination data station is connected.
1 Assignment
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Accused Products
Abstract
A star local-area network system comprises a plurality of data stations and a central switching unit for switching the connection between the data stations. The central switching unit comprises, a plurality of ports to which a plurality of data stations are connected, an address table in which each port has a storage area for storing the address assigned to each data station, an address registration section for entering a source address which indicates one of said data stations that generates message data and is contained in the message data received from the data station in the storage area corresponding to the port which received the data, a switch installed between the plurality of ports, for switching the connection between the ports, and a switch control section for referring to the address table, to detect the port corresponding to a destination data station specified by a destination address contained in the received data and then controlling the switch so that the port which received the data can be connected to the port to which the destination data station is connected.
112 Citations
24 Claims
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1. A star local-area network system comprising a plurality of data stations and a circuit switching unit for switching connections between the data stations, wherein said circuit switching unit comprises:
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a plurality of ports to which said plurality of data stations are connected; table means in which each port has a storage area for storing the address assigned to each data station; address registration means for, when said circuit switching unit receives a registration command from each of said data stations, entering a source address contained in the command in said storage area corresponding to the port which received the command; switching means installed between said plurality of ports, for switching the connection between the ports; and switch controlling means for referring to said table means to detect the port corresponding to a destination data station specified by a destination address contained in a received message data, and then controlling said switching means to that the port which received said message data can be connected to the port to which said destination data station is connected. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A star local-area network system comprising a plurality of data stations and a packet switching unit for allowing data exchange between the data stations, wherein said packet switching unit comprises:
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a plurality of ports to which said plurality of data stations are connected; table means in which each port has a storage area for storing the address assigned to each data station; address registration means for, each time said packet switching unit receives a message data from each of said data stations, entering a source address, contained in the message data, in said storage area corresponding to the port which received the message data; switching means installed between said plurality of ports, for switching the connection between the ports; and switch controlling means for referring to said table means to detect the port corresponding to a destination data station specified by a destination address contained in a received message data, and then controlling said switching means so that said received message data can be transferred to the port to which said destination data station is connected. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A star local-area network system comprising a plurality of data stations and a central switching unit for switching connection between the data stations, wherein said central switching unit comprises:
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a plurality of ports to which said plurality of data stations are connected; table means for storing address information showing a relationship between addresses of said data stations and said plurality of ports, each of said addresses being stored in a storage area corresponding to each of said ports; address registration means for, when said central switching unit receives a message data from each of said data stations, entering a source address contained in the message data received from said data station, in said storage area corresponding to the port which received the message data, thereby updating said address information; switching means installed between said plurality of ports, for switching the connection between the ports; and switch controlling means for referring to said table means to detect the port corresponding to a destination data station specified by a destination address contained in a received message data, and then controlling said switching means so that the port which received said message data can be connected to the port to which said destination data station is connected. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification