US4472712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multipoint data communication system with local arbitration
Assignee: Nokia Bell Labs
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Filing: 1982-03-05
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Granted: 1984-09-18
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Expires: 2002-03-05
Abstract
Abstract A multipoint access data communication system which includes a communication bus, a plurality of transceivers connected to the bus for communication, and a remote collision detector associated with each transceiver for detecting collisions between communications on the medium, has improvements which adapt the transceivers for connection to a plurality of network interface units, and local access arbitrators associated with the transceivers for preventing collisions between transmissions simultaneously attempted by two or more network interface units connected to a transceiver.
Inventors
- 👤 Cyrus F. Ault
- 👤 Kristin F. Kocan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:42
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/28; H04L12/40; H04L12/40006; H04L12/40032; G; G06; G06F; G06F13/00; G06F13/14; G06F13/36; G06F13/362; G06F13/364; H04L12/407; H04L12/413
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
120 words
An improved data communication system comprising: a communication medium; a plurality of transceiver means connected to the medium for communicating across the medium; remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means; means associated with at least one transceiver means for adapting the transceiver means for concurrent interfacing for communication with a plurality of using means responsive to the associated remote collision detection means by refraining from commencing to transmit communications to the associated transceiver means while the associated remote collision detection means are detecting collision; and means associated with each of the at least one transceiver means for preventing local collisions.
Claim 2
Dependent Claim
120 words
An improved data communication system comprising: a communication medium; a plurality of transceiver means connected to the medium for communicating across the medium; remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means; means associated with at least one transceiver means for adapting the transceiver means for concurrent interfacing for communication with a plurality of using means responsive to the associated remote collision detection means by refraining from commencing to transmit communications to the associated transceiver means while the associated remote collision detection means are detecting collision; and means associated with each of the at least one transceiver means for preventing local collisions.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1 wherein the local collision preventing means comprise means for preventing contemporaneous communications from a plurality of the using means to the transceiver means.
Claim 4
Dependent Claim
28 words
The apparatus of claim 1 wherein the local collision preventing means comprise means for arbitrating communications access from the plurality of the using means to the transceiver means.
Claim 5
Dependent Claim
109 words
An improved data communication system comprising: a communication medium; a plurality of transceiver means connected to the medium for communicating across the medium; remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means; a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication; means associated with at least one transceiver means for adapting the transceiver means for concurrent connection to a plurality of interface means; and means associated with each of the at least one transceiver means for preventing local collisions.
Claim 6
Dependent Claim
109 words
An improved data communication system comprising: a communication medium; a plurality of transceiver means connected to the medium for communicating across the medium; remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means; a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication; means associated with at least one transceiver means for adapting the transceiver means for concurrent connection to a plurality of interface means; and means associated with each of the at least one transceiver means for preventing local collisions.
Claim 7
Dependent Claim
28 words
The apparatus of claim 4 wherein the local collision preventing means comprise means for preventing contemporaneous communications from a plurality of the interface means to the transceiver means.
Claim 8
Dependent Claim
28 words
The apparatus of claim 4 wherein the local collision preventing means comprise means for arbitrating communications access from the plurality of the interface means to the transceiver means.
Claim 9
Dependent Claim
52 words
The apparatus of claim 4 wherein the local collision preventing means comprises: means for detecting readiness to communicate by at least one interface means connected to the transceiver means; means for selecting one of the ready interface means; and means for enabling communications from only the selected one of the interface means.
Claim 10
Dependent Claim
60 words
The apparatus of claim 7 wherein each of the interface means include means for signaling a request to communicate and means for receiving a grant to communicate, wherein the detecting means include means for monitoring the request signaling means for requests, and wherein the enabling means include means for signaling a grant to the selected one of the interface means.
Claim 11
Dependent Claim
39 words
The apparatus claim 4 wherein the local collision preventing means comprise: means for selecting one of the interface means connected to the transceiver means; and means for disabling communications from all but the selected one of the interface means.
Claim 12
Dependent Claim
27 words
The apparatus of claim 9 wherein the disabling means include means for signaling continuous detection of collision to all but the selected one of the interface means.
Claim 13
Dependent Claim
301 words
An improved data communication system comprising: (a) a communication medium; (b) a plurality of transceiver means connected to the medium for communicating across the medium, at least one transceiver means having transmitter input means and receiver output means; (c) remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the collision detection means associated with the at least one transceiver means having a remote collision detect output means; (d) a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interfacing means having receiver interface input means, transmitter interface output means, collision backoff control input means, transmission request output means, and transmission grant input means; (e) means associated with the at least one transceiver means for adapting the transceiver means and associated remote collision detection means for concurrent connection to a plurality of interface means, the adapting means comprising (1) means for fanning out the transmitter input means to a plurality of the transmitter interface output means, (2) means for fanning out the receiver output means to a plurality of the receiver interface input means, and (3) means for fanning out the remote collision detect output means to a plurality of the collision backoff control input means; and (f) means associated with each of the at least one transceiver means for preventing local collisions comprising (1) means for monitoring the transmission request output means of the interface means connected to the transceiver means for requests, (2) means for selecting one from a plurality of substantially contemporaneous requests, and (3) means for signaling a grant to the transmission grant input means of the interface means whose request has been selected.
Claim 14
Dependent Claim
301 words
An improved data communication system comprising: (a) a communication medium; (b) a plurality of transceiver means connected to the medium for communicating across the medium, at least one transceiver means having transmitter input means and receiver output means; (c) remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the collision detection means associated with the at least one transceiver means having a remote collision detect output means; (d) a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interfacing means having receiver interface input means, transmitter interface output means, collision backoff control input means, transmission request output means, and transmission grant input means; (e) means associated with the at least one transceiver means for adapting the transceiver means and associated remote collision detection means for concurrent connection to a plurality of interface means, the adapting means comprising (1) means for fanning out the transmitter input means to a plurality of the transmitter interface output means, (2) means for fanning out the receiver output means to a plurality of the receiver interface input means, and (3) means for fanning out the remote collision detect output means to a plurality of the collision backoff control input means; and (f) means associated with each of the at least one transceiver means for preventing local collisions comprising (1) means for monitoring the transmission request output means of the interface means connected to the transceiver means for requests, (2) means for selecting one from a plurality of substantially contemporaneous requests, and (3) means for signaling a grant to the transmission grant input means of the interface means whose request has been selected.
Claim 15
Dependent Claim
279 words
An improved data communication system comprising: (a) a communication medium; (b) a plurality of transceiver means connected to the medium for communicating across the medium, at least one transceiver means having transmitter input means and receiver output means; (c) remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the collision detection means associated with the at least one transceiver means having a remote collision detect output means; (d) a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interfacing means having receiver interface input means, transmitter interface output means, and collision backoff control input means; (e) means associated with the at least one transceiver means for adapting the transceiver means and associated remote collision detection means for concurrent connection to a plurality of interface means, the adapting means comprising (1) means for fanning out the transmitter input means to a plurality of the transmitter interface output means, (2) means for fanning out the receiver output means to a plurality of the receiver interface input means, and (3) means for fanning out the remote collision detect output means to a plurality of the collision backoff control input means; and (f) means associated with each of the at least one transceiver means for preventing local collisions comprising (1) means for selecting one of the interface means connected to the transceiver means, and (2) means for continuously inputing collision detected signals to the collision backoff control input means of all but the selected one of the interface means.
Claim 16
Dependent Claim
279 words
An improved data communication system comprising: (a) a communication medium; (b) a plurality of transceiver means connected to the medium for communicating across the medium, at least one transceiver means having transmitter input means and receiver output means; (c) remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the collision detection means associated with the at least one transceiver means having a remote collision detect output means; (d) a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interfacing means having receiver interface input means, transmitter interface output means, and collision backoff control input means; (e) means associated with the at least one transceiver means for adapting the transceiver means and associated remote collision detection means for concurrent connection to a plurality of interface means, the adapting means comprising (1) means for fanning out the transmitter input means to a plurality of the transmitter interface output means, (2) means for fanning out the receiver output means to a plurality of the receiver interface input means, and (3) means for fanning out the remote collision detect output means to a plurality of the collision backoff control input means; and (f) means associated with each of the at least one transceiver means for preventing local collisions comprising (1) means for selecting one of the interface means connected to the transceiver means, and (2) means for continuously inputing collision detected signals to the collision backoff control input means of all but the selected one of the interface means.
Claim 17
Dependent Claim
118 words
An improved transceiver for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, and remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the transceiver including the associated remote collision detection means, the transceiver comprising: means for adapting the transceiver for concurrent interfacing for communications with a plurality of using means responsive to the associated remote collision detection means by refraining from commencing to transmit communications to the transceiver means while the associated remote collision detection means are detecting collision; and means for preventing local collisions.
Claim 18
Dependent Claim
118 words
An improved transceiver for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, and remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the transceiver including the associated remote collision detection means, the transceiver comprising: means for adapting the transceiver for concurrent interfacing for communications with a plurality of using means responsive to the associated remote collision detection means by refraining from commencing to transmit communications to the transceiver means while the associated remote collision detection means are detecting collision; and means for preventing local collisions.
Claim 19
Dependent Claim
27 words
The apparatus of claim 13 wherein the local collision preventing means comprise means for preventing contemporaneous communications from a plurality of the using means to the transceiver.
Claim 20
Dependent Claim
27 words
The apparatus of claim 13 wherein the local collision preventing means comprise means for arbitrating communications access from the plurality of the using means to the transceiver.
Claim 21
Dependent Claim
106 words
An improved transceiver for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, and a plurality of means connected to the transceiver means for interfacing using means and transceiver means for communication, the transceiver including the associated remote collision detection means, the transceiver comprising: means for adapting the transceiver for concurrent connection to a plurality of the interface means; and means for preventing local collisions.
Claim 22
Dependent Claim
106 words
An improved transceiver for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, and a plurality of means connected to the transceiver means for interfacing using means and transceiver means for communication, the transceiver including the associated remote collision detection means, the transceiver comprising: means for adapting the transceiver for concurrent connection to a plurality of the interface means; and means for preventing local collisions.
Claim 23
Dependent Claim
27 words
The apparatus of claim 16 wherein the local collision preventing means comprise means for preventing contemporaneous communications from a plurality of the interface means to the transceiver.
Claim 24
Dependent Claim
27 words
The apparatus of claim 16 wherein the local collision preventing means comprise means for arbitrating communications access from the plurality of the interface means to the transceiver.
Claim 25
Dependent Claim
51 words
The apparatus of claim 16 wherein the local collision preventing means comprise: means for detecting readiness to communicate of at least one interface means connected to the transceiver; means for selecting one of the ready interface means; and means for enabling communications from only the selected one of the interface means.
Claim 26
Dependent Claim
60 words
The apparatus of claim 19 wherein each of the interface means include means for signaling a request to communicate and means for receiving a grant to communicate, wherein the detecting means include means for monitoring the request signaling means for requests, and wherein the enabling means include means for signaling a grant to the selected one of the interface means.
Claim 27
Dependent Claim
39 words
The apparatus of claim 16 wherein the local collision preventing means comprise: means for selecting one of the interface means connected to the transceiver; and means for disabling communications from all but the selected one of the interface means.
Claim 28
Dependent Claim
27 words
The apparatus of claim 21 wherein the disabling means include means for signaling continuous detection of collision to all but the selected one of the interface means.
Claim 29
Dependent Claim
264 words
An improved transceiver for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, and a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interfacing means having a receiver interface input means, transmitter interface output means, collision backoff control input means, transmission request output means, and transmission grant input means, the transceiver including the associated remote collision detection means and having transmitter input means, receiver input means, and remote collision detect output means, the transceiver comprising: (a) means for adapting the transceiver for concurrent connection to a plurality of interface means, comprising (1) means for fanning out the transmitter input means to a plurality of transmitter interface output means, (2) means for fanning out the receiver output means to a plurality of receiver interface input means, (3) means for fanning out the remote collision detect output means to a plurality of collision backoff control input means; and (b) means for preventing local collisions comprising (1) means for monitoring the transmission request output means of the interface means connected to the transceiver for requests, (2) means for selecting one from a plurality of substantially contemporaneous requests, and (3) means for signaling a grant to the transmission grant input means of the interface means whose request has been selected.
Claim 30
Dependent Claim
264 words
An improved transceiver for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, and a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interfacing means having a receiver interface input means, transmitter interface output means, collision backoff control input means, transmission request output means, and transmission grant input means, the transceiver including the associated remote collision detection means and having transmitter input means, receiver input means, and remote collision detect output means, the transceiver comprising: (a) means for adapting the transceiver for concurrent connection to a plurality of interface means, comprising (1) means for fanning out the transmitter input means to a plurality of transmitter interface output means, (2) means for fanning out the receiver output means to a plurality of receiver interface input means, (3) means for fanning out the remote collision detect output means to a plurality of collision backoff control input means; and (b) means for preventing local collisions comprising (1) means for monitoring the transmission request output means of the interface means connected to the transceiver for requests, (2) means for selecting one from a plurality of substantially contemporaneous requests, and (3) means for signaling a grant to the transmission grant input means of the interface means whose request has been selected.
Claim 31
Dependent Claim
257 words
An improved transceiver for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, and a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interfacing means having a receiver interface input means, transmitter interface output means, and collision backoff control input means, the transceiver including the associated remote collision detection means and having transmitter input means, receiver input means, and remote collision detect output means, the transceiver comprising: (a) means for adapting the transceiver for concurrent connection to a plurality of interface means, comprising (1) means for fanning out the transmitter input means to a plurality of the transmitter interface output means, (2) means for fanning out the receiver output means to a plurality of the receiver interface input means, and (3) means for fanning out the medium collision detect output means to a plurality of the collision backoff control input means; and (f) means associated with each of the at least one transceiver means for preventing local collisions comprising (1) means for selecting one of the interface means connected to the transceiver means, and (2) means for continuously inputing collision detected signals to the collision backoff control input means of all but the selected one of the interface means.
Claim 32
Dependent Claim
257 words
An improved transceiver for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, and a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interfacing means having a receiver interface input means, transmitter interface output means, and collision backoff control input means, the transceiver including the associated remote collision detection means and having transmitter input means, receiver input means, and remote collision detect output means, the transceiver comprising: (a) means for adapting the transceiver for concurrent connection to a plurality of interface means, comprising (1) means for fanning out the transmitter input means to a plurality of the transmitter interface output means, (2) means for fanning out the receiver output means to a plurality of the receiver interface input means, and (3) means for fanning out the medium collision detect output means to a plurality of the collision backoff control input means; and (f) means associated with each of the at least one transceiver means for preventing local collisions comprising (1) means for selecting one of the interface means connected to the transceiver means, and (2) means for continuously inputing collision detected signals to the collision backoff control input means of all but the selected one of the interface means.
Claim 33
Dependent Claim
119 words
An adapter and local collision detector for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, and remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the adapter and local arbitrator comprising; means for adapting transceiver means and associated remote collision detection means for concurrent interfacing for communications with a plurality of using means responsive to the remote collision detection means by refraining from commencing to transmit communications to the transceiver means while the remote collision detection means are detecting collision; and means for preventing local collisions.
Claim 34
Dependent Claim
119 words
An adapter and local collision detector for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, and remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the adapter and local arbitrator comprising; means for adapting transceiver means and associated remote collision detection means for concurrent interfacing for communications with a plurality of using means responsive to the remote collision detection means by refraining from commencing to transmit communications to the transceiver means while the remote collision detection means are detecting collision; and means for preventing local collisions.
Claim 35
Dependent Claim
28 words
The apparatus of claim 25 wherein the local collision preventing means comprise means for preventing contemporaneous communications from a plurality of the using means to the transceiver means.
Claim 36
Dependent Claim
28 words
The apparatus of claim 25 wherein the local collision preventing means comprise means for arbitrating communications access from the plurality of the using means to the transceiver means.
Claim 37
Dependent Claim
109 words
An adapter and local collision detector for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, and a plurality of means connected to the transceiver means for interfacing using means and transceiver means for communication, the adapter and local collision detector comprising: means for adapting transceiver mens and associated remote collision detection means for concurrent connection to a plurality of interface means; and means for preventing local collisions.
Claim 38
Dependent Claim
109 words
An adapter and local collision detector for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, and a plurality of means connected to the transceiver means for interfacing using means and transceiver means for communication, the adapter and local collision detector comprising: means for adapting transceiver mens and associated remote collision detection means for concurrent connection to a plurality of interface means; and means for preventing local collisions.
Claim 39
Dependent Claim
28 words
The apparatus of claim 28 wherein the local collision preventing means comprise means for preventing contemporaneous communications from a plurality of the interface means to the transceiver means.
Claim 40
Dependent Claim
28 words
The apparatus of claim 28 wherein the local collision preventing means comprise means for arbitrating communications access from the plurality of the interface means to the transceiver means.
Claim 41
Dependent Claim
52 words
The apparatus of claim 28 wherein the local collision preventing means comprise: means for detecting readiness to communicate of at least one interface means connected to the transceiver means; means for selecting one of the ready interface means; and means for enabling communications from only the selected one of the interface means.
Claim 42
Dependent Claim
60 words
The apparatus of claim 31 wherein each of the interface means include means for signaling a request to communicate and means for receiving a grant to communicate, wherein the detecting means include means for monitoring the request signaling means for requests, and wherein the enabling means include means for signaling a grant to the selected one of the interface means.
Claim 43
Dependent Claim
40 words
The apparatus of claim 28 wherein the local collision preventing means comprise: means for selecting one of the interface means connected to the transceiver means; and means for disabling communications from all but the selected one of the interface means.
Claim 44
Dependent Claim
27 words
The apparatus of claim 33 wherein the disabling means include means for signaling continuous detection of collision to all but the selected one of the interface means.
Claim 45
Dependent Claim
261 words
An adapter and local arbitrator for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, at least one transceiver means having a transmitter input means and a receiver output means, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the remote collision detection means associated with the at least one transceiver means having a remote collision detect output means, and a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interface means having receiver interface input means, transmitter interface output means, collision backoff control input means, transmission request output means, and transmission grant input means, the adapter and local collision detector comprising: (a) means for fanning out the transmitter input means to a plurality of the transmitter interface output means; (b) means for fanning out the receiver output means to a plurality of the receiver interface input means; (c) means for fanning out the remote collision detect output means to a plurality of the collision backoff control input means; (d) means for monitoring the transmission request output means of the interface means connected to the transceiver means for requests; (e) means for selecting one from a plurality of substantially contemporaneous requests; and (f) means for signaling a grant to the transmission grant input means of the interface means whose request has been selected.
Claim 46
Dependent Claim
261 words
An adapter and local arbitrator for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, at least one transceiver means having a transmitter input means and a receiver output means, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the remote collision detection means associated with the at least one transceiver means having a remote collision detect output means, and a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interface means having receiver interface input means, transmitter interface output means, collision backoff control input means, transmission request output means, and transmission grant input means, the adapter and local collision detector comprising: (a) means for fanning out the transmitter input means to a plurality of the transmitter interface output means; (b) means for fanning out the receiver output means to a plurality of the receiver interface input means; (c) means for fanning out the remote collision detect output means to a plurality of the collision backoff control input means; (d) means for monitoring the transmission request output means of the interface means connected to the transceiver means for requests; (e) means for selecting one from a plurality of substantially contemporaneous requests; and (f) means for signaling a grant to the transmission grant input means of the interface means whose request has been selected.
Claim 47
Dependent Claim
247 words
An adapter and local arbitrator for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, at least one transceiver means having a transmitter input means and a receiver output means, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the remote collision detection means associated with the at least one transceiver means having a remote collision detect output means, and a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interface means having receiver interface input means, transmitter interface output means, collision backoff control input means, transmission request output means, and transmission grant input means, the adapter and local collision detector comprising: (a) means for fanning out the transmitter input means to a plurality of the transmitter interface output means; (b) means for fanning out the receiver output means to a plurality of the receiver interface input means; (c) means for fanning out the remote collision detect output means to a plurality of the collision backoff control input means; (d) means for selecting one of the interface means connected to the transceiver means; and (e) means for continuously inputing collision detected signals to the collision backoff control input means of all but the selected one of the interface means.
Claim 48
Dependent Claim
247 words
An adapter and local arbitrator for a data communication system which includes a communication medium, a plurality of transceiver means connected to the medium for communicating across the medium, at least one transceiver means having a transmitter input means and a receiver output means, remote collision detection means associated with each transceiver means for detecting collisions between a plurality of communications at least one of which involves the associated transceiver means, the remote collision detection means associated with the at least one transceiver means having a remote collision detect output means, and a plurality of means connected to the plurality of transceiver means for interfacing using means to the transceiver means for communication, at least some of the interface means having receiver interface input means, transmitter interface output means, collision backoff control input means, transmission request output means, and transmission grant input means, the adapter and local collision detector comprising: (a) means for fanning out the transmitter input means to a plurality of the transmitter interface output means; (b) means for fanning out the receiver output means to a plurality of the receiver interface input means; (c) means for fanning out the remote collision detect output means to a plurality of the collision backoff control input means; (d) means for selecting one of the interface means connected to the transceiver means; and (e) means for continuously inputing collision detected signals to the collision backoff control input means of all but the selected one of the interface means.
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USPTO Annuity & Maintenance Windows
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| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |