US3810100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Looped direct switching system
Assignee: Collins Radio Co
•
Filing: 1971-12-16
•
Granted: 1974-05-07
•
Expires: 1991-12-16
Abstract
Abstract A communication system for transmitting messages between calling and called parties wherein the message is divided into predetermined length blocks and transmitted a block at a time. The concept includes the possibility of a very complex system wherein the message is transmitted via communication links from one node to the next node such that the transmitting party does not have a solid connection to the ultimate receiving party. In other words the transmission of a block from one node to the next is completed and satisfactory receipt is acknowledged before the message block is transmitted to a further node. The message blocks can be transmitted at a time when some of the nodes connecting the calling and called parties are busy with other messages such that the message block is stored in each node of the connection path until the following node is clear to receive a new message block.
Inventors
- 👤 L Hungerford
- 👤 C Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:10
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/28; H04L12/46; H04L12/4637; H04L5/00
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
266 words
Data communication switching apparatus comprising, in combination: master station means including, local loop input means for receiving input signals from a local loop, local loop output means for supplying output signals to the local loop, means for transmitting SELECT and CONNECT mode message blocks comprising predetermined numbers of logic bits on said local loop output means, means for receiving SELECT and CONNECT mode message blocks comprising said predetermined numbers of logic bits on said local loop input means, and means, incorporated in said means for transmitting, for transmitting SELECT mode poll messages after said master station means detects the end of a connect mode message, said master station means passing some of said SELECT and CONNECT mode message blocks, received at said local loop input means, without change, to said local loop output means for forwarding therefrom; a plurality of subordinate station means each including, local loop input means for receiving input signals from the local loop, local loop output means for supplying output signals to the local loop, means, in each of said plurality of subordinate station means, individually supplying SELECT mode call messages at said local loop output means thereof when the individual subordinate means contains CONNECT messages for transmission, and means for responding to SELECT call messages containing an address of said individual subordinate station means by alternating a response field section of received SELECT call messages; and means connecting the local loop input and output means of said master and subordinate station means in a closed loop such that each SELECT call and each CONNECT mode message traverses the complete closed loop.
Claim 2
Dependent Claim
266 words
Data communication switching apparatus comprising, in combination: master station means including, local loop input means for receiving input signals from a local loop, local loop output means for supplying output signals to the local loop, means for transmitting SELECT and CONNECT mode message blocks comprising predetermined numbers of logic bits on said local loop output means, means for receiving SELECT and CONNECT mode message blocks comprising said predetermined numbers of logic bits on said local loop input means, and means, incorporated in said means for transmitting, for transmitting SELECT mode poll messages after said master station means detects the end of a connect mode message, said master station means passing some of said SELECT and CONNECT mode message blocks, received at said local loop input means, without change, to said local loop output means for forwarding therefrom; a plurality of subordinate station means each including, local loop input means for receiving input signals from the local loop, local loop output means for supplying output signals to the local loop, means, in each of said plurality of subordinate station means, individually supplying SELECT mode call messages at said local loop output means thereof when the individual subordinate means contains CONNECT messages for transmission, and means for responding to SELECT call messages containing an address of said individual subordinate station means by alternating a response field section of received SELECT call messages; and means connecting the local loop input and output means of said master and subordinate station means in a closed loop such that each SELECT call and each CONNECT mode message traverses the complete closed loop.
Claim 3
Dependent Claim
48 words
Apparatus as claimed in claim 1 wherein: each of said subordinate station means contains means for examining the response field section of a returned SELECT call message for a positive acknowledgement before said subordinate station means supplies a CONNECT mode message to said local loop output means thereof.
Claim 4
Dependent Claim
38 words
Apparatus as claimed in claim 2 wherein: each of said subordinate station means includes means for initiating further SELECT call messageS when positive acknowledgements are not received for the first SELECT call message for a particular CONNECT message.
Claim 5
Dependent Claim
53 words
Apparatus as claimed in claim 1 wherein: said master station means includes means for inhibiting the transmission of SELECT mode poll messages upon reception of messages by said master station means from outside the local closed loop for subsequent transmission to one of said plurality of subordinate station means in the local loop.
Claim 6
Dependent Claim
45 words
Apparatus as claimed in claim 1 wherein: said master station means includes means for formatting said SELECT mode poll messages to comprise a logic ''''1'''' bit followed by a number of logic ''''0''s'''' at least equal to the length of a SELECT mode message block.
Claim 7
Dependent Claim
140 words
A data communication system comprising apparatus as claimed in claim 1 and comprising in addition: at least one additional master station means and connected subordinate station means as defined in claim 1; intermediate loop controller means for initially supplying a SELECT poll message and for supplying further SELECT poll messages upon detecting the occurrence of predetermined conditions; means connecting said loop controller means and each of the plurality of said master station means in a closed intermediate loop; and each of said master station means further including means for transmitting a message from its local loop through the intermediate loop to a local loop of another master station means upon receiving a poll message on the intermediate loop and further including means for thereafter forwarding the transmitted poll to the next sequential master station means on the closed intermediate loop.
Claim 8
Dependent Claim
201 words
A data message transfer system including at least one subordinate node means and at least one master node means connected in a closed loop configuration wherein: said master node means includes, local loop input means for receiving signals, local loop output means for supplying signals, means for originating SELECT and CONNECT mode message blocks to the loop, means for terminating SELECT AND CONNECT mode message blocks from the loop, means for monitoring the passage of SELECT and CONNECT mode message blocks therethrough from said local loop input means to said local loop output means, and means for monitoring said closed loop whereby a logic ''''1'''' poll bit is transmitted from said local loop output means after each observance by said master mode means of the end of a connect mode message block; and each of said at least one subordinate node means includes local loop input means for receiving signals from the local loop, local loop output means for transmitting messages, means for responding to said logic ''''1'''' poll bit by supplying a SELECT mode call message which when returned around the loop is examined in a response section thereof for a positive acknowledgement before supplying a CONNECT message for transmission.
Claim 9
Dependent Claim
201 words
A data message transfer system including at least one subordinate node means and at least one master node means connected in a closed loop configuration wherein: said master node means includes, local loop input means for receiving signals, local loop output means for supplying signals, means for originating SELECT and CONNECT mode message blocks to the loop, means for terminating SELECT AND CONNECT mode message blocks from the loop, means for monitoring the passage of SELECT and CONNECT mode message blocks therethrough from said local loop input means to said local loop output means, and means for monitoring said closed loop whereby a logic ''''1'''' poll bit is transmitted from said local loop output means after each observance by said master mode means of the end of a connect mode message block; and each of said at least one subordinate node means includes local loop input means for receiving signals from the local loop, local loop output means for transmitting messages, means for responding to said logic ''''1'''' poll bit by supplying a SELECT mode call message which when returned around the loop is examined in a response section thereof for a positive acknowledgement before supplying a CONNECT message for transmission.
Claim 10
Dependent Claim
75 words
Data message transfer apparatus as claimed in claim 7 wherein: said at least one subordinate node means additionally comprises means for receiving SELECT mode call messages, means for examining the polynomial check code of said received SELECT mode call messages and means for altering the response section of said received SELECT mode call messages to indicate proper reception thereof as it is forwarded to continue its path around said closed loop to the calling node.
Claim 11
Dependent Claim
52 words
Data message transfer apparatus as claimed in claim 8 wherein: said at least one subordinate node means additionally includes means for examining the address of received SELECT mode call messages for a predetermined address before altering the response section thereof and further contains means for differentiating between SELECT and CONNECT mode messages.
Claim 12
Dependent Claim
191 words
A data message transfer system including at least one subordinate station means and at least one master station means connected In a closed loop configuration wherein: said master station means includes, local loop input means for receiving signals, local loop output means for supplying signals, means for originating SELECT and CONNECT mode message blocks to the loop, means for terminating SELECT and CONNECT mode message blocks from the loop, means for monitoring the passage of SELECT and CONNECT message blocks therethrough from said local loop input means to said local loop output means, and means for monitoring said closed loop whereby a logic ''''1'''' poll bit is transmitted from said local loop output means after each observance by the master station means of the end of a CONNECT mode loop block; and said at least one subordinate station means includes, local loop input means for receiving signals, local loop output means for supplying signals, means for altering the response section of SELECT mode call messages when said SELECT mode call messages are properly received, and means for subsequently receiving CONNECT mode messages whose response fields are also altered if properly received.
Claim 13
Dependent Claim
191 words
A data message transfer system including at least one subordinate station means and at least one master station means connected In a closed loop configuration wherein: said master station means includes, local loop input means for receiving signals, local loop output means for supplying signals, means for originating SELECT and CONNECT mode message blocks to the loop, means for terminating SELECT and CONNECT mode message blocks from the loop, means for monitoring the passage of SELECT and CONNECT message blocks therethrough from said local loop input means to said local loop output means, and means for monitoring said closed loop whereby a logic ''''1'''' poll bit is transmitted from said local loop output means after each observance by the master station means of the end of a CONNECT mode loop block; and said at least one subordinate station means includes, local loop input means for receiving signals, local loop output means for supplying signals, means for altering the response section of SELECT mode call messages when said SELECT mode call messages are properly received, and means for subsequently receiving CONNECT mode messages whose response fields are also altered if properly received.
Claim 14
Dependent Claim
110 words
Data communication apparatus for transmitting messages between separate closed loop systems comprising, in combination; first and second closed loop data communication systems each comprising a plurality of data receiving and data transmitting stations; and full duplex transmission system means connecting a first one of said stations of said first closed loop data system to a first one of said stations of said second closed loop data system for the transmission of messages between said closed loop data communication systems; each of said first stations including a plurality of message storage means and further including means for transmitting a station status message intermediate each closed loop to closed loop data message.
Claim 15
Dependent Claim
110 words
Data communication apparatus for transmitting messages between separate closed loop systems comprising, in combination; first and second closed loop data communication systems each comprising a plurality of data receiving and data transmitting stations; and full duplex transmission system means connecting a first one of said stations of said first closed loop data system to a first one of said stations of said second closed loop data system for the transmission of messages between said closed loop data communication systems; each of said first stations including a plurality of message storage means and further including means for transmitting a station status message intermediate each closed loop to closed loop data message.
Claim 16
Dependent Claim
70 words
Apparatus as claimed in claim 11 wherein; the receiving one of said first stations additionally includes means for checking received message parity and means for transmitting a return positive acknowledgement message to the transmitting first station upon determination of proper message receipt; and said transmitting first station includes means for detecting a returned positive acknowledgement message and means for deleting stored messages for transmission corresponding to said returned positive acknowledgement.
Claim 17
Dependent Claim
196 words
Single channel closed loop data communication means wherein any data originating station in the closed loop can transmit messages as a complete and coherent message block directly to any data receiving station on said single channel closed loop comprising, in combination: master station means for monitoring the passage of messages therethrough and said master station including means for transmitting polls at predetermined times; transmitting first station means including means for sending a call message addressed to a station means other than said master station upon receipt of a poll, and means for transmitting a data message after receipt of a positive acknowledgement of said call message by the addressed station; receiving second station means including means for detecting a preassigned address in a received call message, means for checking proper receipt of said call message, means for altering a response section of said received call message to indicate positive acknowledgement and means for forwarding the altered call message; and means connecting said master station means, said first station means and said second station means in a closed loop such that all stations see every transmitted message, either before or after alteration of the response section thereof.
Claim 18
Dependent Claim
196 words
Single channel closed loop data communication means wherein any data originating station in the closed loop can transmit messages as a complete and coherent message block directly to any data receiving station on said single channel closed loop comprising, in combination: master station means for monitoring the passage of messages therethrough and said master station including means for transmitting polls at predetermined times; transmitting first station means including means for sending a call message addressed to a station means other than said master station upon receipt of a poll, and means for transmitting a data message after receipt of a positive acknowledgement of said call message by the addressed station; receiving second station means including means for detecting a preassigned address in a received call message, means for checking proper receipt of said call message, means for altering a response section of said received call message to indicate positive acknowledgement and means for forwarding the altered call message; and means connecting said master station means, said first station means and said second station means in a closed loop such that all stations see every transmitted message, either before or after alteration of the response section thereof.
Claim 19
Dependent Claim
33 words
Communication apparatus as claimed in claim 13 wherein: said master station means includes means for transmitting a poll after it sees the passage therethrough of a data message from said first station means.
Claim 20
Dependent Claim
131 words
Communication apparatus as claimed in claim 13 whereIn: said second station means includes means for storing said data message as transmitted by said first station means after acknowledgement of said call message and further includes means for altering a response section of said received data message to indicate positive acknowledgement thereof as said data message is returned to the closed loop for forwarding to said first station means; said first station means including means for detecting positive acknowledgement of said data message and thereupon returning said first station means to a condition for sending a new set of call and data messages after receipt of a further poll; and said master station means includes means for transmitting a poll after seeing the passage therethrough of a predetermined number of data messages.
Claim 21
Independent Claim
84 words
The method of increasing efficiency of a communication switching system generally containing a plurality of connecting nodes and intermediate communication links in a communication path between message originating and message receiving parties comprising the steps of: storing a multiple word message block in consecutive nodes in the communication path; returning a positive acknowledgement of proper receipt to an immediately previous transmitting node; and awaiting an opening in link traffic for forwarding the stored message block to the next consecutive node in the communication path.
Claim 22
Independent Claim
84 words
The method of increasing efficiency of a communication switching system generally containing a plurality of connecting nodes and intermediate communication links in a communication path between message originating and message receiving parties comprising the steps of: storing a multiple word message block in consecutive nodes in the communication path; returning a positive acknowledgement of proper receipt to an immediately previous transmitting node; and awaiting an opening in link traffic for forwarding the stored message block to the next consecutive node in the communication path.
Claim 23
Dependent Claim
30 words
The method of claim 16 whereby multiplexing problems are eliminated comprising the additional step of transmitting the message blocks at the entire frequency bandwidth of the node to node connections.
Claim 24
Dependent Claim
107 words
Data message switching apparatus comprising, in combination: a plurality of message storage and forwarding station means each of which is activated to store a CONNECT message by receipt of a selectively addressed call message at an input thereof and activated to transmit a call message followed by a CONNECT message at an output thereof by receipt of a poll message at an input thereof; master group control means constructed for supplying polling messages after seeing the end of each CONNECT message; and means connecting said plurality of station means and said control means in a closed loop such that all CONNECT messages pass through said control means.
Claim 25
Dependent Claim
107 words
Data message switching apparatus comprising, in combination: a plurality of message storage and forwarding station means each of which is activated to store a CONNECT message by receipt of a selectively addressed call message at an input thereof and activated to transmit a call message followed by a CONNECT message at an output thereof by receipt of a poll message at an input thereof; master group control means constructed for supplying polling messages after seeing the end of each CONNECT message; and means connecting said plurality of station means and said control means in a closed loop such that all CONNECT messages pass through said control means.
Claim 26
Dependent Claim
44 words
Apparatus as claimed in claim 18 wherein: said control means includes means for inhibiting the supplying of polling messages after seeing the end of a loop CONNECT message until an internally stored message is transmitted by said control means to an addressed station means.
Claim 27
Dependent Claim
36 words
Apparatus as claimed in claim 19 comprising, in addition: terminal means connected to each of said station means for originating messages to be transmitted via said closed loop to terminal means connected to other station means.
Claim 28
Dependent Claim
33 words
Apparatus as claimed in claim 19 comprising, in addition: means in said station means for inhibiting activation by a poll message for a predetermined number of received poll messages after a previous activation.
Claim 29
Independent Claim
137 words
The method of initializing a local closed data loop including a plurality of message storage transmitting and receiving station means and a master control station means whereby said storage station means are activated for message reception by a call from any station means and activated for transmission of a message by a single bit poll from said master station means comprising the steps of: transmitting a series of logic ''''0''s'''' around said loop in excess of the maximum message block length followed by a single bit poll; detecting said series of logic ''''0''s'''' for initialization of a given station means before said given station means allows itself to be activated; monitoring loop transactions; and transmitting a new series of logic ''''0''s'''' for re-initialization whenever the number of consecutive logic ''''0''s'''' on the loop exceeds a predetermined magnitude.
Claim 30
Independent Claim
137 words
The method of initializing a local closed data loop including a plurality of message storage transmitting and receiving station means and a master control station means whereby said storage station means are activated for message reception by a call from any station means and activated for transmission of a message by a single bit poll from said master station means comprising the steps of: transmitting a series of logic ''''0''s'''' around said loop in excess of the maximum message block length followed by a single bit poll; detecting said series of logic ''''0''s'''' for initialization of a given station means before said given station means allows itself to be activated; monitoring loop transactions; and transmitting a new series of logic ''''0''s'''' for re-initialization whenever the number of consecutive logic ''''0''s'''' on the loop exceeds a predetermined magnitude.
Claim 31
Dependent Claim
193 words
Station apParatus for transferring CONNECT messages between portions of a closed data loop, including at least one other similar station apparatus, and terminal unit means comprising, in combination: data buffer means for storing messages; loop interface means; terminal unit interface means; control means connected to said loop and terminal interface means as well as said data buffer means, said control means operating part of the time to receive CONNECT message blocks from said loop interface means and distribute the CONNECT message blocks a portion at a time to said terminal interface means while inhibiting simulataneous reception of messages from said terminal unit interface means and operating part of the rest of the time to receive portions of a connect message from said terminal unit interface means for assembly of a CONNECT message in said data buffer means and to subsequently transfer the assembled CONNECT message to said loop interface means while inhibiting receipt of messages from said loop interface means; and said control means further containing means for detecting calls from said loop interface means and for replying with a busy signal when a message is being assembled in said data buffer means.
Claim 32
Dependent Claim
193 words
Station apParatus for transferring CONNECT messages between portions of a closed data loop, including at least one other similar station apparatus, and terminal unit means comprising, in combination: data buffer means for storing messages; loop interface means; terminal unit interface means; control means connected to said loop and terminal interface means as well as said data buffer means, said control means operating part of the time to receive CONNECT message blocks from said loop interface means and distribute the CONNECT message blocks a portion at a time to said terminal interface means while inhibiting simulataneous reception of messages from said terminal unit interface means and operating part of the rest of the time to receive portions of a connect message from said terminal unit interface means for assembly of a CONNECT message in said data buffer means and to subsequently transfer the assembled CONNECT message to said loop interface means while inhibiting receipt of messages from said loop interface means; and said control means further containing means for detecting calls from said loop interface means and for replying with a busy signal when a message is being assembled in said data buffer means.
Claim 33
Dependent Claim
38 words
Apparatus as claimed in claim 23 wherein: said control means includes means for detecting the occurrence of a single logic ''''1'''' poll bit from said loop interface means before transmitting assembled CONNECT messages in said data buffer means.
Claim 34
Dependent Claim
62 words
Apparatus as claimed in claim 24 wherein: said control means includes means for assembling and transmitting a SELECT mode call message, including the address of the called party, to said loop interface means, and awaits a positive acknowledgement of said SELECT mode call message between receiving said logic ''''1'''' poll bit and transmitting the assembled CONNECT message from said data buffer means.
Claim 35
Independent Claim
158 words
The method of interchanging messages between a closed loop interface means and a terminal unit interface wherein the message capacity of said terminal unit interface is much smaller than said closed loop interface means comprising the steps of: receiving message segments from said terminal unit interface means; assembling said received message segments to form a large capacity message block while inhibiting receipt of message blocks from the loop interface means; detecting the completion of assembly of a message block; detecting the occurrence of a poll from said loop interface means; transmitting said assembled message block to said loop interface means; checking received SELECT mode messages for the occurrence of a given address; receiving a CONNECT data message when a message is not being assembled from said terminal unit interface means; and distributing said received data message in segments to said terminal unit interface means while inhibiting receipt of further data message segments therefrom until completion of the distribution.
Claim 36
Independent Claim
158 words
The method of interchanging messages between a closed loop interface means and a terminal unit interface wherein the message capacity of said terminal unit interface is much smaller than said closed loop interface means comprising the steps of: receiving message segments from said terminal unit interface means; assembling said received message segments to form a large capacity message block while inhibiting receipt of message blocks from the loop interface means; detecting the completion of assembly of a message block; detecting the occurrence of a poll from said loop interface means; transmitting said assembled message block to said loop interface means; checking received SELECT mode messages for the occurrence of a given address; receiving a CONNECT data message when a message is not being assembled from said terminal unit interface means; and distributing said received data message in segments to said terminal unit interface means while inhibiting receipt of further data message segments therefrom until completion of the distribution.
Claim 37
Dependent Claim
36 words
The method of claim 26 comprising the additional step of: altering the response portion of received select and connect mode messages containing a given assigned address as said messages are returned to said loop interface means.
Claim 38
Dependent Claim
69 words
The method as claimed in claim 26 comprising the additional steps of: immediately returning all messages received from said loop interface means to said loop interface means; checking an address portion of said received messages for said given address; and altering a response section of individual ones of said received messages as they are returned to said loop interface means if the address thereof coincides with said given address.
Claim 39
Dependent Claim
172 words
Closed loop communication system apparatus comprising, in combination: a master station for periodically providing an initialization sequence comprising a plurality of logic bits of a first type followed by a poll logic bit of a second type, said plurality of logic bits being greatEr in number than the number of logic bits in a single message in the communication system; a plurality of substations; and means connecting said master station and said substations together in a closed loop such that any substation can communicate with any other substation; said substations including means for transmitting a call message in response to a single logic bit poll of the second type, means for transmitting a connect message in response to a positive acknowledgement of said call message and means for transmitting a plurality of logic bits of the first type and one of the second type after completion of the transmission of the connect message whereby other substations in said closed loop may detect the logic bit poll and attempt to send a message.
Claim 40
Dependent Claim
172 words
Closed loop communication system apparatus comprising, in combination: a master station for periodically providing an initialization sequence comprising a plurality of logic bits of a first type followed by a poll logic bit of a second type, said plurality of logic bits being greatEr in number than the number of logic bits in a single message in the communication system; a plurality of substations; and means connecting said master station and said substations together in a closed loop such that any substation can communicate with any other substation; said substations including means for transmitting a call message in response to a single logic bit poll of the second type, means for transmitting a connect message in response to a positive acknowledgement of said call message and means for transmitting a plurality of logic bits of the first type and one of the second type after completion of the transmission of the connect message whereby other substations in said closed loop may detect the logic bit poll and attempt to send a message.
Claim 41
Independent Claim
84 words
The method of commencing communicating between nodes in a communication system comprising, the steps of: transmitting a SELECT call, including the called party''s address to a next node in the communication system; receiving a response of satisfactory receipt and acceptance of the SELECT call from said next node; transmitting a CONNECT call, including the called and calling parties'' addresses, to said next node in the communication system; and receiving a response of satisfactory receipt and acceptance of the CONNECT call from said next node.
Claim 42
Independent Claim
84 words
The method of commencing communicating between nodes in a communication system comprising, the steps of: transmitting a SELECT call, including the called party''s address to a next node in the communication system; receiving a response of satisfactory receipt and acceptance of the SELECT call from said next node; transmitting a CONNECT call, including the called and calling parties'' addresses, to said next node in the communication system; and receiving a response of satisfactory receipt and acceptance of the CONNECT call from said next node.
Claim 43
Independent Claim
267 words
The method of communicating between first and second parties in a buffered multinode communication system with different communication links between pairs of nodes, comprising the steps of: transmitting a SELECT call containing the address of said second party from the node of said first party to the next node in the network; awaiting a positive acknowledgement from said next node; transmitting a CONNECT call including the addresses of both of said first and second parties; awaiting a positive response from said next node; transmitting SELECT and CONNECT calls between remaining pairs of nodes in said communication system between the node of said first party and said second party, one communication link at a time until the CONNECT call is received by said second party, each communication link passing SELECT and CONNECT calls with positive acknowledgements being supplied to said transmitting node before being forwarded over the next communication link to the next node in the communication system; transmitting a CONNECT message from said second party to said first party, one data link at a time in substantially the same manner as the CONNECT call was transmitted, indicating said second party has received the CONNECT call message and is available to receive further messages, said second party using said first party''s address in replying, as obtained from said CONNECT call message; and transmitting CONNECT data messages from said first party to said second party after said first party receives the positive acknowledgement CONNECT message from said second party, the messages being forwarded one data link at a time in the manner of the first referenced CONNECT call message.
Claim 44
Independent Claim
267 words
The method of communicating between first and second parties in a buffered multinode communication system with different communication links between pairs of nodes, comprising the steps of: transmitting a SELECT call containing the address of said second party from the node of said first party to the next node in the network; awaiting a positive acknowledgement from said next node; transmitting a CONNECT call including the addresses of both of said first and second parties; awaiting a positive response from said next node; transmitting SELECT and CONNECT calls between remaining pairs of nodes in said communication system between the node of said first party and said second party, one communication link at a time until the CONNECT call is received by said second party, each communication link passing SELECT and CONNECT calls with positive acknowledgements being supplied to said transmitting node before being forwarded over the next communication link to the next node in the communication system; transmitting a CONNECT message from said second party to said first party, one data link at a time in substantially the same manner as the CONNECT call was transmitted, indicating said second party has received the CONNECT call message and is available to receive further messages, said second party using said first party''s address in replying, as obtained from said CONNECT call message; and transmitting CONNECT data messages from said first party to said second party after said first party receives the positive acknowledgement CONNECT message from said second party, the messages being forwarded one data link at a time in the manner of the first referenced CONNECT call message.
Claim 45
Dependent Claim
44 words
The method of claim 31 comprising the additional step of: arresting further transmissions from said first party to said second party by sending a CONNECT disconnect message from one of said first and second parties to the other of said first and second parties.
Claim 46
Dependent Claim
30 words
The method of claim 31 comprising the additional step of: storing the CONNECT message at each node until a further communication link is available in a desirable communication path direction.
Claim 47
Dependent Claim
122 words
In a communication network including a plurality of nodes interconnected via communication links for connecting calling and called parties in a communication path, at least some of the nodes comprising, in combination: storage means for storing a CONNECT message received from a source in the communication path between said calling and called parties; means for transmitting a SELECT call to tHe next node in the communication path to the called party; means for detecting a positive acknowledgement of said SELECT call from the next node; means for nondestructively transmitting the CONNECT message contained in said storage means to the next node; and means for commencing nondestructive retransmission of said CONNECT message when a positive acknowledgement is not received from said next node.
Claim 48
Dependent Claim
122 words
In a communication network including a plurality of nodes interconnected via communication links for connecting calling and called parties in a communication path, at least some of the nodes comprising, in combination: storage means for storing a CONNECT message received from a source in the communication path between said calling and called parties; means for transmitting a SELECT call to tHe next node in the communication path to the called party; means for detecting a positive acknowledgement of said SELECT call from the next node; means for nondestructively transmitting the CONNECT message contained in said storage means to the next node; and means for commencing nondestructive retransmission of said CONNECT message when a positive acknowledgement is not received from said next node.
Claim 49
Dependent Claim
56 words
Apparatus as claimed in claim 34 wherein said nodes comprise in addition: means for permitting receipt of new messages and destruction of the CONNECT message contained in said storage means after receipt of a positive acknowledgement from the next node in the communication path subsequent to transmission by the means for transmitting of the CONNECT message.
Claim 50
Dependent Claim
109 words
In a communication system comprising, in combination: data source means; data sink means; data monitoring means for administratively counting messages passing therethrough; loop control means; and means connecting said data source means, said data sink means, said data monitoring means and said control means in a closed loop, any data source means supplying a data message directly to any data sink means on said closed loop with said data sink means altering a response portion of said data message as it circulates for indicating reception of said data message by said data sink means to said data source means when said data message means completes a closed loop circulation.
Claim 51
Dependent Claim
109 words
In a communication system comprising, in combination: data source means; data sink means; data monitoring means for administratively counting messages passing therethrough; loop control means; and means connecting said data source means, said data sink means, said data monitoring means and said control means in a closed loop, any data source means supplying a data message directly to any data sink means on said closed loop with said data sink means altering a response portion of said data message as it circulates for indicating reception of said data message by said data sink means to said data source means when said data message means completes a closed loop circulation.
Claim 52
Dependent Claim
29 words
Communication apparatus as claimed in claim 36 wherein said data monitoring means includes means for calculating costs to be billed said data source means for data messages sent therefrom.
Claim 53
Dependent Claim
28 words
Communication apparatus as claimed in claim 36 wherein said data monitoring means includes means for providing directory service in response to specific requests from said data source means.
References Cited (Backward Citations)
US2192961A
Cited
US3331923A
Cited
US3569635A
Cited
US3579191A
Cited
US3519750A
Cited
US3586782A
Cited
US3676846A
Cited
US3597549A
Cited
US3597549B1
Cited
US3648256A
Cited
US3632881A
Cited
US3651474A
Cited
US3681759A
Cited
US3692941A
Cited
US3731002A
Cited
US3680056A
Cited
US3659271A
Cited
US3710026A
Cited
US3732543A
Cited
US3735362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |