Broadcast network

• US 4,975,909 A
• Filed: 10/14/1988
• Issued: 12/04/1990
• Est. Priority Date: 10/14/1988
• Status: Expired due to Term

• Current Assignee: Compunetix, Inc.
• Original Assignee: Compunetics Inc. (Compunetix, Inc.)
• Inventors: Masson, Gerald M., Driscoll, John L.
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): Chin, Wellington
• Application Number:
  US07/258,217
• Time in Patent Office: 781 Days
• Field of Search: 370/94.3, 370/94.1, 370/85.15, 370/85.12, 370/85.9, 370/85.14
• US Class Current: 370/422
• CPC Class Codes: H04L 12/1886 with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains
• CPC Class Codes: H04L 12/42 Loop networks

Abstract

The present invention pertains to a broadcast network. The broadcast network comprises N transmit stations, with each transmit station being capable of transmitting a signal and N being an integer ≧1. There are also M receive stations, where M is an integer ≧2; I switching stages where I is an integer ≧0 and a broadcast hub. The broadcast hub and I switching stages are connected such that they are capable of linking the N transmit stations to the M receive stations so that any one of the N transmit stations can transmit a signal to L of the receive stations, where L is an integer and 2≦L≦M, but each receive stations can receive a signal from only one of the N transmit stations at any given time. The broadcast hub and switching stages link more than one of the N transmit stations to desired receive stations at any given time.

Claims

1. A broadcast network comprising:

N transmit stations, each transmit station being capable of transmitting a signal and N being an integer≧

1;

M receive stations, where M is an integer≧

2;

I switching stages where I is an integer≧

0; and

a broadcast hub, said broadcast hub and I switching stages connected such that they are capable of linking the N transmit stations to the M receive stations so that any one of the N transmit stations can transmit a signal to L of the receive stations, where L is an integer and 2≧

L≧

M, but each receive station can receive a signal from only one of the N transmit stations at any given time, said broadcast hub and switching stages linking more than one of the N transmit stations to desired receive stations at any given time.

2. A broadcast network as described in claim 1 wherein the broadcast hub is a broadcast vector.

3. A broadcast network as described in claim 2 wherein there is at least one switching stage which forms a presentation network linking the N transmit stations to the broadcast vector.

4. A broadcast network as described in claim 3 wherein there is at least one additional switching stage which forms a distribution network linking the broadcast vector to the M receive stations.

5. A broadcast network as described in claim 2 wherein the broadcast vector is comprised of P broadcast modules, where P≧

2 and is an integer, each broadcast module having e_iq external inputs and e_or external outputs, and i_is internal outputs and i_ot internal inputs, where e_iq, e_or, i_is and i_ot ≧

1 and are integers, with at least one of the internal outputs of one of the N broadcast modules being linked to an internal input of another broadcast module and each broadcast module having means for connecting an input port of the e_iq and i_is input ports to Q of the e_or and i_ot output ports, where Q is an integer and 1≦

Q≦

e_or +i_ot, and each output port is only connected to one input port but more than one output port can be connected to an input port.

6. A broadcast network as described in claim 5 wherein there is at least one switching stage which forms a presentation network linking the N transmit stations to the broadcast vector.

7. A broadcast network as described in claim 6 wherein there is at least one additional switching stage which forms a distribution network linking the broadcast vector to the M receive stations.

8. A broadcast network as described in claim 1 wherein the broadcast hub is a broadcast ring.

9. A broadcast network as described in claim 8 wherein there is at least one switching stage which forms a presentation network linking the N transmit stations to the broadcast ring.

10. A broadcast network as described in claim 9 wherein there is at least one additional switching stage which forms a distribution network linking the broadcast ring to the M receive stations.

11. A broadcast network as described in claim 10 wherein there is at least one additional switching stage which forms a distribution network linking the broadcast hyper-ring to the M receive stations.

12. A broadcast network as described in claim 8 wherein the broadcast ring is comprised of P broadcast modules where P≧

2 and is an integer, each broadcast module having e_iq external inputs, and e_or external outputs, and i_is internal inputs and i_ot internal outputs, where e_iq, e_or, i_is and i_ot ≧

1 and are integers, said external inputs and outputs providing for signals into and out of the broadcast ring, respectively but not to other broadcast modules in the broadcast ring, said internal inputs and outputs providing for signal flow between the broadcast modules in the broadcast ring with at least one of the i_ot internal outputs of the broadcast module being linked to at least one of the i_is internal inputs of another broadcast module, and every broadcast module in the broadcast ring having an internal output of another broadcast module linked to one of its i_is internal inputs and each broadcast module having means for connecting an input port of the e_iq and i_is input ports to Q of the e_or and i_ot output ports, where Q is an integer and 1≦

Q≦

e_or +i_ot, and each output port is only connected to one input port but more than one output port can be connected to an input port.

13. A broadcast network as described in claim 12 wherein there is at least one switching stage which forms a presentation network linking the N transmit stations to the broadcast ring.

14. A broadcast network as described in claim 13 wherein there is at least one additional switching stage which forms a distribution network linking the broadcast ring to the M receive stations.

15. A broadcast network as described in claim 1 wherein the broadcast hub is a broadcast hyper-ring.

16. A broadcast network as described in claim 15 wherein there is at least one switching stage which forms a presentation network linking the N transmit stations to the broadcast hyper-ring.

17. A broadcast network as described in claim 15 wherein the broadcast hyper-ring is comprised of P broadcast modules where P≧

3 and is an integer, each broadcast module having e_ig external inputs, and e_or external outputs, and i_is internal inputs and i_ot internal outputs, where e_ig, e_or, i_is and i_ot ≧

1 and are integers, with at least one of the outputs of one of the P broadcast modules being linked to at least one of the inputs of at least 2 of the P-1 other broadcast modules, and every broadcast module in the broadcast hyper-ring having an output of another broadcast modules linked to one of its inputs;

each broadcast module having

means for connecting an input port of the e_iq and i_is input ports to Q of the e_or and i_ot output ports, where Q is an integer and 1≧

Q≧

e_or +i_ot, and each output port is only connected to one input port but more than one output port can be connected to an input port; and

J switches, where J≧

0, said broadcast modules and switches are linked such that a signal that is inputted into the broadcast hyper-ring at one of the e_iq input ports can be outputted out of the broadcast hyper-ring at L of the e_or output ports, where L is an integer and 2≧

L≧

e_or, but each output port can only output the signal inputted into the broadcast hyper-ring from one external input port at any given time, said broadcast modules and switching stages capable of directing the signals from more than one of the e_iq input ports to desired output ports at any given time.

18. A broadcast hyper-ring described in claim 17 wherein at least one of the i_ot internal outputs of one of the P broadcast modules is linked to at least one of the i_is internal inputs of at least 2 of the P-1 other broadcast modules, and every broadcast module in the broadcast hyper-ring having an internal output of another broadcast module linked to one of its i_is internal inputs.

19. A broadcast network as described in claim 18 wherein there is at least one switching stage which forms a presentation network linking the N transmit stations to the broadcast hyper-ring.

20. A broadcast network as described in claim 19 wherein there is at least one additional switching stage which forms a distribution network linking the broadcast hyper-ring to the M receive stations.

21. A broadcast vector comprising:

P broadcast modules, where P≧

2 and is an integer, each broadcast module having e_iq external inputs and e_or external outputs, and i_is internal inputs and i_ot internal outputs, where e_iq, e_or, i_is and i_ot ≧

1 and are integers, with at least one of the internal outputs of one of the P broadcast modules being linked to an internal input of another broadcast module and each broadcast module having means for connecting an input port of the e_iq and i_is input ports to Q of the e_or and i_ot output ports, where Q is an integer and 1≧

Q≧

e_or +i_ot, and each output port is only connected to one input port but more than one output port can be connected to an input port; and

wherein a presentation network is connected to the P broadcast modules to provide signals thereto.

22. A broadcast vector as described in claim 21 including a distribution network connected to the P broadcast modules to remove signals therefrom.

23. A broadcast ring comprising:

P broadcast modules where P≧

2 and is an integer, each broadcast module having e_iq external inputs, and e_or external outputs, and i_is internal inputs and i_ot internal outputs, where e_iq, e_or, i_is and i_ot ≧

1 and are integers, said external inputs and outputs providing for signals into and out of the broadcast ring, respectively but not to other broadcast modules in the broadcast ring, said internal inputs and outputs providing for signal flow between the broadcast modules in the broadcast ring, with at least one of the i_ot internal outputs of the broadcast module being linked to at least one of the i_is internal inputs of another broadcast module, and every broadcast module in the broadcast ring having an internal output of another broadcast module linked to one of its i_is internal inputs.

24. A broadcast ring as described in claim 23 including a presentation network connected to the P broadcast modules to provide signals thereto.

25. A broadcast ring as described in claim 24 including a distribution network connected to the P broadcast modules to remove signals therefrom.

26. A broadcast hyper-ring comprising:

P broadcast modules where P≧

3 and is an integer, each broadcast module having e_iq external inputs, and e_or external outputs, and i_is internal inputs and i_ot internal outputs, where e_iq, e_or, i_is, and i_ot ≧

1 and are integers, with at least one of the outputs of one of the P broadcast modules being linked to at least one of the inputs of at least 2 of the P-1 other broadcast modules, and every broadcast module in the broadcast hyper-ring having an output of another broadcast hyper-ring having an output of another broadcast module linked to one of its inputs;

each broadcast module having

means for connecting an input port of the e_iq and i_is input ports to Q of the e_or and i_ot output ports, where Q is an integer and 1≧

Q≧

e_or +i_ot, and each output port is only connected to one input port but more than one output port can be connected to an input port; and

J switches, where J≧

O, said broadcast modules and switches are linked such that a signal that is inputted into the broadcast hyper-ring at one of the e_iq input ports can be outputted out of the broadcast hyper-ring at L of the e_or output ports, where L is an integer and 2≦

L≦

e_or, but each output port can only output the signal inputted into the broadcast hyper-ring from one external input port at any given time, said broadcast modules and switching stages capable of directing the signals from more than one of the e_iq input ports to desired output ports at any given time;

and wherein a presentation network is connected to the P broadcast modules to provide signals thereto.

27. A broadcast hyper-ring described in claim 26 wherein at least one of the i_ot internal outputs of one of the P broadcast modules is linked to at least one of the i_is internal inputs of at least 2 of the P-1 other broadcast modules, and every broadcast module in the broadcast hyper-ring having an internal output of another broadcast module linked to one of its i_is internal inputs;

28. A broadcast hyper-ring as described in claim 26 including a distribution network connected to the P broadcast modules to remove signals therefrom.

29. A broadcast network comprising:

a first broadcast module having a first and at least a second input port and a first and at least a second output port;

at least a second broadcast module having a first and at least a second input port and a first and at least a second output port, said second input port of said second broadcast module linked to said second output port of said first broadcast module and said second input port of said first broadcast module linked to said second output port of said second broadcast module, each broadcast module having means for connecting one of its input ports to one or more of its output ports but each broadcast module'"'"'s output port being connected to only one of its input ports;

at least a first presentation switch having a first and at least a second input port and a first and at least a second output port, said first output port of said presentation switch linked to said first input port of said first broadcast module, said second output port of said presentation switch linked to said first input port of said second broadcast module; and

at least a first distribution switch having a first and at least a second input port and a first and at least a second output port, said first output port of said first broadcast module being linked to said first input port of said distribution switch and said first output port of said second broadcast module linked to said second input port of said distribution switch.

30. A broadcast network as described in claim 29 including at least a third broadcast module having a first input port and at least a second input port, and a first output port and at least a second output port;

wherein the first broadcast module has at least a third input port linked to the second output port of the third broadcast module, wherein the second broadcast module has at least a third output port linked to the second input port of the third broadcast module, wherein the first presentation switch has at least a third input port and at least a third output port with the third output port linked to the first input port of the third broadcast module; and

wherein the first distribution switch has at least a third input port and at least a third output port with the third input port linked to the first output port of the third broadcast module.

31. A broadcast network as described in claim 30 wherein the third broadcast module has at least a third input and at least a third output;

wherein the first broadcast module has a third output port linked to the third input port of the third broadcast module; and

wherein the second broadcast module has at least a third input port linked to the third output port of the third broadcast module.

32. A broadcast network as described in claim 29 wherein the second broadcast module has at least a third output port and a third and a fourth input port;

wherein the first broadcast module has at least a third input port and at least a third output port;

wherein the first presentation switch has a third and at least a fourth input port and a third and at least a fourth output port;

wherein the first distribution switch has a third and at least a fourth output port and a third and at least a fourth input port; and

including a third broadcast module having a first input port linked to the third output port of the first presentation switch, a second input port linked to the third output port of the first broadcast module and at least a third input port; and

a first output port linked to the third input port of the first broadcast module, a second output port linked to the third input port of the first distribution switch, a third output port linked to the fourth input port of the second broadcast module and a fourth output port; and

including a fourth broadcast module having a first, second and at least a third input port linked to the fourth output port of the presentation switch, the third output port of the second broadcast module and the fourth output port of the third broadcast module, respectively, and a first, second and at least a third output port linked to the fourth input port of the first distribution switch, the third input port of the second broadcast module and the third input port of the third broadcast module, respectively.

33. A broadcast network as described in claim 32 wherein the second broadcast module has at least a fourth output port, the third broadcast module has at least a fourth input port linked to the fourth output port of the second broadcast module;

wherein the first broadcast module has at least a fourth input port and at least a fourth output port; and

wherein the fourth broadcast module has a fourth input port and a fourth output port linked to the fourth output port and fourth input port, respectively, of the first broadcast module.

34. A broadcast vector comprising:

P broadcast modules, where P≧

2 and is an integer, each broadcast module having e_iq external inputs and e_or external outputs, and i_is internal inputs and i_ot internal outputs, where e_iq, e_or, i_is and i_ot ≧

1 and are integers, with at least one of the internal outputs of one of the N broadcast modules being linked to an internal input of another broadcast module and each broadcast module having means for connecting an input port of the e_iq and i_is input ports to Q of the e_or and i_ot output ports, where Q is an integer and 1≦

Q≦

e_or +i_ot, and each output port is only connected to one input port but more than one output port can be connected to an input port such that direct connecting paths are temporarily formed through the P broadcast modules providing for signal flow only for respective predetermined broadcasts.

35. A broadcast ring comprising:

P broadcast modules where P≧

2 and is an integer, each broadcast module having e_iq external inputs and e_or external outputs, and i_is internal inputs and i_ot internal outputs, where e_iq, e_or, i_is and i_ot ≧

1 and are integers, said external inputs and outputs providing for signals into and out of the broadcast ring, respectively but not to other broadcast modules in the broadcast rings, said internal inputs and output providing for signal flow between the broadcast modules in the broadcast ring, with at least one of the i_ot internal outputs of the broadcast module ring linked to at least one of the i_is internal inputs of another broadcast module, and every broadcast module in the broadcast ring having an internal output of another broadcast module linked to one of its i_is internal inputs such that direct connecting paths are temporarily formed through the P broadcast modules providing for signal flow only for respective predetermined broadcasts.

36. A broadcast hyper-ring comprising:

P broadcast modules where P≧

3 and is an integer, each broadcast module having e_iq external inputs, and e_or external outputs, and i_is internal inputs and i_ot internal outputs, where e_iq, e_or, i_is, and i_ot ≧

1 and are integers, with at least one of the outputs of one of the P broadcast modules being linked to at least one of the inputs of at least 2 of the P-1 other broadcast modules, and every broadcast module in the broadcast hyper-ring having an output of another broadcast hyper-ring having an output of another broadcast module linked to one of its inputs;

each broadcast module having

means for connecting an input port of the e_iq and i_is input ports to Q of the e_or and i_ot output ports, where Q is an integer and 1≦

Q≦

e_or +i_ot, and each output port is only connected to one input port but more than one output port can be connected to an input port; and

J switches, where J≧

0, said broadcast modules and switches are linked such that a signal that is inputted into the broadcast hyper-ring at one of the e_iq input ports can be outputted out of the broadcast hyper-ring at L of the e_or output ports, where L is an integer and 2≦

L≦

e_or, but each output port can only output the signal inputted into the broadcast hyper-ring from one external input port at any given time, said broadcast modules and switching stages capable of directing the signals from more than one of the e_iq input ports to desired output ports at any given time such that direct connecting paths are temporarily formed through the P broadcast modules providing for signal flow only for respective predetermined broadcasts.

37. A broadcast vector comprising:

P broadcast modules, where P≧

2 and is an integer, each broadcast module having e_iq external inputs and e_or external outputs, and i_is internal inputs and i_ot internal outputs, where e_iq, e_or, i_is and i_ot ≧

1 and are integers, with at least one of the internal outputs of one of the N broadcast modules being linked to an internal input of another broadcast module and each broadcast module having means for connecting an input port of the e_iq and i_is input ports to Q of the e_or and i_ot output ports, where Q is an integer and 1≦

Q≦

e_or +i_ot, and each output port is only connected to one input port but more than one output port can be connected to an input port such that open connecting paths are formed between the P broadcast modules.

38. A broadcast ring comprising:

P broadcast modules where P≧

2 and is an integer, each broadcast module having e_iq external input, and e_or external outputs, and i_is internal inputs and i_ot internal outputs where e_iq, e_or, i_is and i_ot ≧

1 and are integers, said external inputs and outputs providing for signals into and out of the broadcast ring, respectively but not to other broadcast modules in the broadcast rings, said internal inputs and output providing for signal flow between the broadcast modules in the broadcast ring, with at least one of the i_ot internal outputs of the broadcast module ring linked to at least one of the i_is internal inputs of another broadcast module, and every broadcast module in the broadcast ring having an internal output of another broadcast module linked to one of its i_is internal inputs such that open connecting paths are formed between the P broadcast modules.

39. A broadcast hyper-ring comprising:

P broadcast modules where P≧

3 and is an integer, each broadcast module having e_iq external inputs, and e_or external outputs, and i_is internal inputs and i_ot internal outputs, where e_iq, e_or, i_is, and i_ot ≧

1 and are integers, with at least one of the outputs of one of the P broadcast modules being linked to at least one of the inputs of at least 2 of the P-1 other broadcast modules, and every broadcast module in the broadcast hyper-ring having an output of another broadcast hyper-ring having an output of another broadcast module linked to one of its inputs;

each broadcast module having

means for connecting an input port of the e_iq and i_is input ports to Q of the e_or and i_ot output ports, where Q is an integer and 1≦

Q≦

e_or +i_ot, and each output port is only connected to one input port but more than one output port can be connected to an input port; and

J switches, where J ≧

O, said broadcast modules and switches are linked such that a signal that is inputted into the broadcast hyper-ring at one of the e_iq input ports can be outputted out of the broadcast hyper-ring at L of the e_or output ports, where L is an integer and 2≦

L≦

e_or, but each output port can only output the signal inputted into the broadcast hyper-ring from one external input port at any given time, said broadcast modules and switching stages capable of directing the signals from more than one of the e_iq input ports to desired output ports at any given time such that open connecting paths are formed between the P broadcast modules.