Digital communication system
First Claim
1. A digital communication system between N stations (N greater than 2) in which the stations comprise information producing means, the information being transmitted in the form of packets of variable lengths comprising address bits and in which the communication between at least certain of the N stations are established by means of at least one other of the N stations performing the function of a relay, each of the N stations which may be called upon to perform the function of a relay including a switching means (where n is a positive integer smaller than 3), each of which comprises:
- checking circuit means for receiving packets produced in the other N stations and for checking the address bits of said received packet according to predetermined criteria;
eliminating circuit means coupled to said checking circuit means for eliminating packets selected by said checking circuit means according to said predetermined criteria; and
inserting circuit means coupled to said eliminating circuit means and to said information producing means for receiving packets, for subordinating the transmission of packets produced in said information producing means to the presence of a gap between the packets received from said eliminating circuit means and for transmitting integrally a packet received from said information producing means irrespective of the length of said gap, said inserting circuit means including a storing circuit means for storing packets received from said eliminating circuit means.
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Accused Products
Abstract
In a digital communication system in which the information is transmitted by successions of bits termed packets, stations may be called upon to perform the function of a relay between other stations. The stations which may be called upon to perform the function of a relay comprise: a checking device which merely checks the address code of a packet received; an eliminating and switching device which either destroys the packet (doubtful address code) or orients the packet toward receiving means pertaining to the station (address code identical to the code of the station) or toward the station corresponding to the address code by passing through a transit memory; and information producing means for producing packets within the station. The contents of the transit memory are transmitted in priority by the station. The packets produced within a station are transmitted in the gaps between the packets coming from the transit memory and in an order which is a function of a classification between the priorities allocated to the information producing means of the considered station.
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Citations
4 Claims
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1. A digital communication system between N stations (N greater than 2) in which the stations comprise information producing means, the information being transmitted in the form of packets of variable lengths comprising address bits and in which the communication between at least certain of the N stations are established by means of at least one other of the N stations performing the function of a relay, each of the N stations which may be called upon to perform the function of a relay including a switching means (where n is a positive integer smaller than 3), each of which comprises:
- checking circuit means for receiving packets produced in the other N stations and for checking the address bits of said received packet according to predetermined criteria;
eliminating circuit means coupled to said checking circuit means for eliminating packets selected by said checking circuit means according to said predetermined criteria; andinserting circuit means coupled to said eliminating circuit means and to said information producing means for receiving packets, for subordinating the transmission of packets produced in said information producing means to the presence of a gap between the packets received from said eliminating circuit means and for transmitting integrally a packet received from said information producing means irrespective of the length of said gap, said inserting circuit means including a storing circuit means for storing packets received from said eliminating circuit means. - View Dependent Claims (2, 3, 4)
- checking circuit means for receiving packets produced in the other N stations and for checking the address bits of said received packet according to predetermined criteria;
Specification