US5023942A — Fault tolerant data transmission network

Claim 1

Independent Claim 109 words

A repeater for a fault tolerant data tarnsmission network receiving an input signal at a transmit level, comprising: splitting means for splitting te input signal at a predetermined split ratio of 71 to 29 into an active path signal and a bypass path signal where 71% of the energy is routed to an active branch and 29% of the energy is routed to a passive branch; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal at a predetermined combining ratio producing an output signal having a 10 -9 bit error rate.

Claim 2

Dependent Claim 109 words

A repeater for a fault tolerant data tarnsmission network receiving an input signal at a transmit level, comprising: splitting means for splitting te input signal at a predetermined split ratio of 71 to 29 into an active path signal and a bypass path signal where 71% of the energy is routed to an active branch and 29% of the energy is routed to a passive branch; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal at a predetermined combining ratio producing an output signal having a 10 -9 bit error rate.

Claim 3

Dependent Claim 33 words

A repeater as recited in claim 1, wherein the predetermined split ratio and the predetermined combining ratio produce a signal to bypass ratio in the range of from 3 dB to 13 dB.

Claim 4

Dependent Claim 16 words

A repeater as recited in claim 2, wherein the signal to bypass ratio is 10.7 dB.

Claim 5

Dependent Claim 24 words

A repeater as recited in claim 1, wherein said retransmit means includes a receiver amplifier with a dynamic range of at least 30 dB.

Claim 6

Dependent Claim 27 words

A repeater as recited in calim 4, wherein said retransmit means includes a capacitance connected to the receiver amplifier and a post amplifier connected to the capacitance.

Claim 7

Dependent Claim 27 words

A repeater as recited in calim 4, wherein said retransmit means includes a capacitance connected to the receiver amplifier and a post amplifier connected to the capacitance.

Claim 8

Dependent Claim 15 words

A repeater as recited in claim 1, wherein said input signal is an optical signal.

Claim 9

Dependent Claim 15 words

A repeater as recited in claim 1, wherein said input signal is an electrical signal.

Claim 10

Dependent Claim 17 words

A repeater as recited in claim 1, wherein said retransmit means retransmits without automatic gain control amplification.

Claim 11

Dependent Claim 156 words

A fault tolerant fiber optic network, comprising: a fiber optic line transmitting an optical data signal; and repeater nodes, each having an input, an active branch and a passive branch, and each repeater cmoprising: splitting means for splitting the signal to the active and passive branches of said repeater at the input at a 71 to 29 split ratio where 71% of the energy is routed to the active branch and 29% of the energy is routed to the passive branch; receiving means coupled to said splitting means for receiving the active branch signal transmitted on the active branch and having a high dynamic range; retransmit means, coupled to said receiving means, for retransmitting the active branch signal; a bypass path, coupled to said splitting means, carrying the passive branch signal; and combining means for combining the passive branch signal and the active branch signal producing an output signal having a 10 -9 bit error rate.

Claim 12

Dependent Claim 156 words

A fault tolerant fiber optic network, comprising: a fiber optic line transmitting an optical data signal; and repeater nodes, each having an input, an active branch and a passive branch, and each repeater cmoprising: splitting means for splitting the signal to the active and passive branches of said repeater at the input at a 71 to 29 split ratio where 71% of the energy is routed to the active branch and 29% of the energy is routed to the passive branch; receiving means coupled to said splitting means for receiving the active branch signal transmitted on the active branch and having a high dynamic range; retransmit means, coupled to said receiving means, for retransmitting the active branch signal; a bypass path, coupled to said splitting means, carrying the passive branch signal; and combining means for combining the passive branch signal and the active branch signal producing an output signal having a 10 -9 bit error rate.

Claim 13

Dependent Claim 42 words

A fault tolerant fiber optic network as claimed in claim 9, wherein said splitting ratio is such that the signal from the bypass path at the output of said combining means is 1/12 of the signal on the main fiber optic line.

Claim 14

Dependent Claim 33 words

A fault tolerant fiber optic network as claimed in claim 9, wherein each receiving means has a dynamic range sufficient to amplify the bypass signal bypassed through at least two contiguous failed nodes.

Claim 15

Dependent Claim 42 words

A fault tolerant fiber optic network as claimed in calim 9, wherein said combining means has a 71 to 29 combining ratio where 71% of the energy comes from said retransmit means and 29% of the energy comes from said bypass path.

Claim 16

Dependent Claim 17 words

A repeater as recited in claim 9, wherein said retransmit means retransmits without automatic gain control amplification.

Claim 17

Dependent Claim 165 words

A fault tolerant electrical network, comprising: an electrical line transmitting an electrical data signal; and repeater nodes, each having an input, an active branch and a passive branch, and each repeater comprising: splitting means for splitting the signal to the active and passive branches of said repeater at the input and producing an active branch signal and a passive branch signal at a 71 to 29 spli ratio where 71% of the energy is routed to the active branch and 29% of the energy is routed to the passive branch; receiving means coupled to said splitting means for receiving the active branch signal transmitted on the active branch and having a high dynamic range; retransmit means, coupled to said receiving means, for retransmitting the active branch signal; a bypass path, coupled to said splitting means, carrying the passive branch signal; and combining means for combining the passive branch signal and the active branch signal producing an output signal having a 10 -9 bit error rate.

Claim 18

Dependent Claim 165 words

A fault tolerant electrical network, comprising: an electrical line transmitting an electrical data signal; and repeater nodes, each having an input, an active branch and a passive branch, and each repeater comprising: splitting means for splitting the signal to the active and passive branches of said repeater at the input and producing an active branch signal and a passive branch signal at a 71 to 29 spli ratio where 71% of the energy is routed to the active branch and 29% of the energy is routed to the passive branch; receiving means coupled to said splitting means for receiving the active branch signal transmitted on the active branch and having a high dynamic range; retransmit means, coupled to said receiving means, for retransmitting the active branch signal; a bypass path, coupled to said splitting means, carrying the passive branch signal; and combining means for combining the passive branch signal and the active branch signal producing an output signal having a 10 -9 bit error rate.

Claim 19

Dependent Claim 32 words

A fault tolerant electrical network as claimed in claim 14, wherein each receiving means has a dynamic range sufficient to amplify the bypass signal bypassed through at least two contiguous failed nodes.

Claim 20

Dependent Claim 40 words

A fault tolerant electrical network as claimed in calim 14, wherein said splitting ratio is such that the signal from the bypass path at the output of said combining means is 1/12 of the signal on the main electrical line.

Claim 21

Dependent Claim 42 words

A fault tolerant electrical network as claimed in claim 14, wherein said said combining means has a 71 to 29 combining ratio where 71% of the energy comes from said retransmit means and 29% of the energy comes from said bypass path.

Claim 22

Dependent Claim 17 words

A repeater as recited in claim 14, wherein said retransmit means retransmits without automatic gain control amplification.

Claim 23

Dependent Claim 99 words

A repeater for a fault tolerant data transmission network receiving an input signal at a transmit level, comprising: splitting means for splitting the input signal at a predetermined split ratio into an active path signal and a bypass path signal; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal at a predetermined combining ratio where the predetermined split ratio and the predetermined combining ratio produce a bypass ratio of 10.7 dB producing an output having a 10 -9 bit error rate.

Claim 24

Dependent Claim 99 words

A repeater for a fault tolerant data transmission network receiving an input signal at a transmit level, comprising: splitting means for splitting the input signal at a predetermined split ratio into an active path signal and a bypass path signal; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal at a predetermined combining ratio where the predetermined split ratio and the predetermined combining ratio produce a bypass ratio of 10.7 dB producing an output having a 10 -9 bit error rate.

Claim 25

Dependent Claim 17 words

A repeater as recited in claim 19, herein said retransmit means retransmits without automatic gain control amplification.

Claim 26

Dependent Claim 111 words

A repeater for a fault tolerant data transmission network receiving an input signal at a transmit level, comprising: splitting means for splitting the input signal at a predetermined split ratio into an active path signal and a bypass path signal; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal to produce a combined signal at a predetermined combining ratio where the split ratio is such that the bypass path signal at an output of said combiner means is 1/12 of the combiend signal producing an output having a 10 -9 bit error rate.

Claim 27

Dependent Claim 111 words

A repeater for a fault tolerant data transmission network receiving an input signal at a transmit level, comprising: splitting means for splitting the input signal at a predetermined split ratio into an active path signal and a bypass path signal; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal to produce a combined signal at a predetermined combining ratio where the split ratio is such that the bypass path signal at an output of said combiner means is 1/12 of the combiend signal producing an output having a 10 -9 bit error rate.

Claim 28

Dependent Claim 17 words

A repeater as recited in claim 21, wherein said retransmit means retransmits without automatic gain control amplificaiton.

Claim 29

Dependent Claim 100 words

A repeater for a fault tolerant data transmission network receiving an input signal at a transmit level, comprising: splitting means for splitting the input signal at a predetermined split ratio of approximately 71 to 29 into an active path signal and a bypass signal where approximately 71% of the energy is routed to an active branch and approximately 29% of the energy is routed to a passive branch; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal at a predetermined combining ratio.

Claim 30

Dependent Claim 100 words

A repeater for a fault tolerant data transmission network receiving an input signal at a transmit level, comprising: splitting means for splitting the input signal at a predetermined split ratio of approximately 71 to 29 into an active path signal and a bypass signal where approximately 71% of the energy is routed to an active branch and approximately 29% of the energy is routed to a passive branch; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal at a predetermined combining ratio.

Claim 31

Dependent Claim 147 words

A fault tolerant fiber optic network, comprising: a fiber optic line transmitting an optical data signal; and repeater nodes, each having an input, an active branch and a passive branch, and each repeater comprising: splitting means for splitting the signal to the active and passive branches of said repeater at the input at approximatley a 71 to 29 split ratio where approximately 71% of the energy is routed to the active branch and 29% of the energy is routed to the passive branch; receiving means coupled to said splitting means for receiving the active branch signal transmitted on the active branch and having a high dynamic range; retransmit means, coupled to said receiving means, for retransmitting the active branch signal; a bypass path, coupled to said splitting means, carrying the passive branch signal; and combining means for combining the passive branch signal and the active branch signal.

Claim 32

Dependent Claim 147 words

A fault tolerant fiber optic network, comprising: a fiber optic line transmitting an optical data signal; and repeater nodes, each having an input, an active branch and a passive branch, and each repeater comprising: splitting means for splitting the signal to the active and passive branches of said repeater at the input at approximatley a 71 to 29 split ratio where approximately 71% of the energy is routed to the active branch and 29% of the energy is routed to the passive branch; receiving means coupled to said splitting means for receiving the active branch signal transmitted on the active branch and having a high dynamic range; retransmit means, coupled to said receiving means, for retransmitting the active branch signal; a bypass path, coupled to said splitting means, carrying the passive branch signal; and combining means for combining the passive branch signal and the active branch signal.

Claim 33

Dependent Claim 157 words

A fulat tolerant electrical network, comprising: an electrical line transmitting an electrical data signal; and repeater nodes, each having an input, an active branch and a passive branch, and each repeater comprising: splitting means for splitting the signal to the active and passive branches of said repeater at the input and producing an active branch signal and a passive branch signal at approximately a 7 1to 29 split ratio where approximately 71% of the energy is routed to the active branch and approximatley 29% of the energy is routed to the passive branch; receiving means coupled to said splitting means for receiving the active branch signal transmitted on the active branch and having a high dynamic range; retransmit means, coupled to said receiving means, for retransmitting the active branch signal; a bypass path, coupled to said splitting means, carrying the passive branch signal; and combining means for combining the passive branch signal and the active branch signal.

Claim 34

Dependent Claim 157 words

A fulat tolerant electrical network, comprising: an electrical line transmitting an electrical data signal; and repeater nodes, each having an input, an active branch and a passive branch, and each repeater comprising: splitting means for splitting the signal to the active and passive branches of said repeater at the input and producing an active branch signal and a passive branch signal at approximately a 7 1to 29 split ratio where approximately 71% of the energy is routed to the active branch and approximatley 29% of the energy is routed to the passive branch; receiving means coupled to said splitting means for receiving the active branch signal transmitted on the active branch and having a high dynamic range; retransmit means, coupled to said receiving means, for retransmitting the active branch signal; a bypass path, coupled to said splitting means, carrying the passive branch signal; and combining means for combining the passive branch signal and the active branch signal.

Claim 35

Dependent Claim 72 words

A repeater for splitting the input signal at a predetermined split ratio into an active path signal and a bypass path signal; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal at a predetermined combining ratio where the predetermined split ratio and the predetermined combining ratio produce a bypass ratio of approximately 10.7 dB.

Claim 36

Dependent Claim 72 words

A repeater for splitting the input signal at a predetermined split ratio into an active path signal and a bypass path signal; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal at a predetermined combining ratio where the predetermined split ratio and the predetermined combining ratio produce a bypass ratio of approximately 10.7 dB.

Claim 37

Dependent Claim 101 words

A repeater for a fault tolerant data transmission network receiving an input signal at a transmit level, comprising: splitting means for splitting the input signal at a predetermined split ratio into an active path signal and a bypass path signal; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal to produce a combined signal at a predetermined combining ratio where the split ratio is such that the bypass path signal at an output of said combiner means is 1/12 of the combined signal.

Claim 38

Dependent Claim 101 words

A repeater for a fault tolerant data transmission network receiving an input signal at a transmit level, comprising: splitting means for splitting the input signal at a predetermined split ratio into an active path signal and a bypass path signal; retransmit means for retransmitting the active path signal at the transmit level; and combiner means for combining the retransmitted active path signal and the bypass path signal to produce a combined signal at a predetermined combining ratio where the split ratio is such that the bypass path signal at an output of said combiner means is 1/12 of the combined signal.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1994-06-10	1994-12-10	1995-06-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1998-06-10	1998-12-10	1999-06-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2002-06-10	2002-12-10	2003-06-11	$7700.00	Window Closed / Lapsed

Fault tolerant data transmission network

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