Information communication system for point-to-point communication and point-to-multipoint communication using same lines
First Claim
1. An information communication system comprising:
- central processing means including a plurality of CPUs and a plurality of main storage units which are multiplexed;
interface means connected to said central processing means and including a plurality of interface units which are multiplexed, one of said plurality of interface units being in a master state, the other interface units being in a slave state;
communication control means connected to said interface means and including a plurality of communication control units each of which includes a plurality of control modules each of which controls communication lines;
a plurality of terminals connected via said communication lines to said communication control means,wherein one of said plurality of CPUs stores transmission data in at least a specific one of said main storage units, and issues one of a request of point-to-point (PTP) communication and a request of point-to-multipoint (PTMP) communication,wherein said master interface unit reads the transmission data from said specific main storage unit in response to said PTP communication request, and selects and controls one of said plurality of control modules associated with said PTP communication request;
wherein said selected control module transmits the transmission data stored in said specific main storage unit to one of said plurality of terminals associated with said PTP communication request under the control by said master interface unit,wherein said specific master interface unit reads the transmission data from said specific main storage unit in response to said PTMP communication request, and selects and controls ones of said plurality of control modules associated with said PTMP communication request, andwherein said selected Ones Of said plurality of control modules transmit said transmission data stored in said master interface unit to ones of said plurality of terminals associated with said PTMP communication request under the control by said master interface unit.
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Abstract
In an information communication system for performing both point-to-point communication and point-to-multipoint communication between a host computer and terminals by using same lines while distributing loads of data communication, data communication report tables are provided on a main storage unit of the host computer for each type of communication. The data communication process is executed distributively at each CPU unit and communication interface unit of the host computer and at each control module of a communication control unit. A plurality of destination pattern tables indicating data destinations are provided for point-to-multipoint communication. For the point-to-multipoint communication, CPU unit designates a particular destination pattern table for each interface unit, and data transmission is requested to each control module in accordance with the destination pattern table.
62 Citations
18 Claims
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1. An information communication system comprising:
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central processing means including a plurality of CPUs and a plurality of main storage units which are multiplexed; interface means connected to said central processing means and including a plurality of interface units which are multiplexed, one of said plurality of interface units being in a master state, the other interface units being in a slave state; communication control means connected to said interface means and including a plurality of communication control units each of which includes a plurality of control modules each of which controls communication lines; a plurality of terminals connected via said communication lines to said communication control means, wherein one of said plurality of CPUs stores transmission data in at least a specific one of said main storage units, and issues one of a request of point-to-point (PTP) communication and a request of point-to-multipoint (PTMP) communication, wherein said master interface unit reads the transmission data from said specific main storage unit in response to said PTP communication request, and selects and controls one of said plurality of control modules associated with said PTP communication request; wherein said selected control module transmits the transmission data stored in said specific main storage unit to one of said plurality of terminals associated with said PTP communication request under the control by said master interface unit, wherein said specific master interface unit reads the transmission data from said specific main storage unit in response to said PTMP communication request, and selects and controls ones of said plurality of control modules associated with said PTMP communication request, and wherein said selected Ones Of said plurality of control modules transmit said transmission data stored in said master interface unit to ones of said plurality of terminals associated with said PTMP communication request under the control by said master interface unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification