US4099022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for pulse data transmission through water-return cables
Assignee: Bunker Ramo Corp
•
Filing: 1977-01-05
•
Granted: 1978-07-04
•
Expires: 1997-01-05
Abstract
Abstract A system for data pulse transmission through a single-wire, water-return cable payed out from a coil in an open pack to any selected length over a predetermined wide range (e.g., 4K to 16K feet) employing a toroidal core around the cable near the pack and a multiturn primary winding on the core. The single-wire cable constitutes a single turn secondary winding terminated at the receiver end by a resistor and coupled to the water (circuit ground) at the transmitting end by stray capacitance between the cable remaining in the pack and the surrounding water. The receiver employs an equalizing network to compensate for the amplitude-frequency characteristic of the cable of nominal length within the predetermined range resulting in only slight over-compensation for a shorter cable length and slight under-compensation for a longer cable length.
Inventors
- 👤 Robert A. Fullerton
- 👤 George V. Podraza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:53
CPC Classifications
H; H04; H04B; H04B5/00; H04B5/20; H04B5/28; H04B5/22; H04L; H04L25/00; H04L25/02; H04L25/0264; H04L25/0266; H04L25/20; H04L25/24
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
74 words
A method for transmitting pulses between two points in a body of water through a single-wire cable with return current through the water comprising the steps of providing capacitive coupling of said cable to said body of water at the transmission end thereof, and inductively coupling said pulses from a signal line into said cable through a toroid core surrounding said cable with a number of turns of said signal line around said toroid.
Claim 2
Independent Claim
74 words
A method for transmitting pulses between two points in a body of water through a single-wire cable with return current through the water comprising the steps of providing capacitive coupling of said cable to said body of water at the transmission end thereof, and inductively coupling said pulses from a signal line into said cable through a toroid core surrounding said cable with a number of turns of said signal line around said toroid.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein said pulses are representative of binary data, where said data is comprised of a train of pulses.
Claim 4
Dependent Claim
21 words
The method of claim 2 wherein said train of transmitted pulses mark every positive and negative transition of said binary data.
Claim 5
Independent Claim
78 words
A method for transmitting data pulses over a single-wire, water-return cable in a body of water, where said cable is payed out to a selected length within a predetermined range from a coil in a cable pack immersed in said water, by inductively coupling said data pulses into said cable through a toroid core of magnetic material surrounding said cable in a position near said pack using a signal line wound a number of times around said toroid.
Claim 6
Independent Claim
78 words
A method for transmitting data pulses over a single-wire, water-return cable in a body of water, where said cable is payed out to a selected length within a predetermined range from a coil in a cable pack immersed in said water, by inductively coupling said data pulses into said cable through a toroid core of magnetic material surrounding said cable in a position near said pack using a signal line wound a number of times around said toroid.
Claim 7
Dependent Claim
55 words
A method as defined in claim 4 including the step of providing fixed compensation of the amplitude response of said cable at high frequencies to produce very nearly flat response over a predetermined frequency range for a length of cable payed out closer to the upper limit of said range than to said lower limit.
Claim 8
Dependent Claim
25 words
A method as defined in claim 5 wherein said fixed compensation is for a length of cable payed out about two thirds of said range.
Claim 9
Independent Claim
116 words
A method for transmitting data pulses over a single-wire, water-return cable in a body of water, where said cable is payed out to a selected length within a predetermined range from a coil in a cable pack immersed in said water, by providing a return current path for said data pulses through said water to effectively shunt said cable remaining in said coiled pack, transmitting said pulses over said single wire, and equalizing said pulses received at the opposite end of said wire using a fixed network for compensating the amplitude response of said cable at high frequencies for a cable length within said predetermined range closer to said upper limit than to said lower limit.
Claim 10
Independent Claim
116 words
A method for transmitting data pulses over a single-wire, water-return cable in a body of water, where said cable is payed out to a selected length within a predetermined range from a coil in a cable pack immersed in said water, by providing a return current path for said data pulses through said water to effectively shunt said cable remaining in said coiled pack, transmitting said pulses over said single wire, and equalizing said pulses received at the opposite end of said wire using a fixed network for compensating the amplitude response of said cable at high frequencies for a cable length within said predetermined range closer to said upper limit than to said lower limit.
Claim 11
Dependent Claim
83 words
Apparatus for transmitting pulses from a package in a body of water to a receiver through a single-wire cable payed out from a coil in an open pack immersed in said body of water with return current through said body of water comprising a toroid core surrounding said payed-out cable near said open pack and a primary winding inductively coupling said pulses from said package into said cable through said toroid core, said primary winding having a number of turns around said core.
Claim 12
Dependent Claim
83 words
Apparatus for transmitting pulses from a package in a body of water to a receiver through a single-wire cable payed out from a coil in an open pack immersed in said body of water with return current through said body of water comprising a toroid core surrounding said payed-out cable near said open pack and a primary winding inductively coupling said pulses from said package into said cable through said toroid core, said primary winding having a number of turns around said core.
Claim 13
Dependent Claim
92 words
Apparatus for transmitting data pulses over a single-wire, water-return cable in a body of water, where said cable is payed out to a selected length within a predetermined range from a coil in a cable pack immersed in said water, comprising means for inductively coupling said data pulses into said cable, and means for providing fixed compensation of the amplitude response of said cable over a predetermined frequency range for a length of cable payed out to a length closer to the upper limit than to the lower limit of said range.
Claim 14
Dependent Claim
92 words
Apparatus for transmitting data pulses over a single-wire, water-return cable in a body of water, where said cable is payed out to a selected length within a predetermined range from a coil in a cable pack immersed in said water, comprising means for inductively coupling said data pulses into said cable, and means for providing fixed compensation of the amplitude response of said cable over a predetermined frequency range for a length of cable payed out to a length closer to the upper limit than to the lower limit of said range.
Claim 15
Dependent Claim
26 words
Apparatus as defined in claim 9 wherein said fixed compensation is nominally designed for a length of cable payed out about two thirds of said range.
Claim 16
Dependent Claim
121 words
Apparatus for transmitting data pulses over a single-wire, water-return cable in a body of water, where said cable is payed out to a selected length within a predetermined range from a coil in a cable pack immersed in said water, comprising means for providing a return current path for said data pulses through said water that effectively shunts said cable remaining in said coiled pack, means for transmitting said pulses over said single wire, and means for equalizing said pulses received at the opposite end of said wire using a fixed network for compensating the amplitude response of said cable at high frequencies for a cable length within said predetermined range closer to said upper limit than to said lower limit.
Claim 17
Dependent Claim
121 words
Apparatus for transmitting data pulses over a single-wire, water-return cable in a body of water, where said cable is payed out to a selected length within a predetermined range from a coil in a cable pack immersed in said water, comprising means for providing a return current path for said data pulses through said water that effectively shunts said cable remaining in said coiled pack, means for transmitting said pulses over said single wire, and means for equalizing said pulses received at the opposite end of said wire using a fixed network for compensating the amplitude response of said cable at high frequencies for a cable length within said predetermined range closer to said upper limit than to said lower limit.
Claim 18
Dependent Claim
26 words
Apparatus as defined in claim 11 wherein said fixed compensation is nominally designed for a length of cable payed out about two thirds of said range.
References Cited (Backward Citations)
US3444508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |