Patent US4408353A successfully refreshed from Google Patents.
US4408353A
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Coaxial cable/fiber optic bus network
Assignee: TE Connectivity Corp
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Filing: 1980-10-17
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Granted: 1983-10-04
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Expires: 2000-10-17
Abstract
Abstract A coaxial cable/fiber optic bus network utilizes a coaxial cable for the main signal bus in a distribution system. The tap samples the electrical signal, and transforms the signal into a light pulse output. An optical splitter changes the single light output into a multiple output for serving a maximum number of peripheral units. Similarly, the input port on the tap uses a like optical splitter to recombine signal paths from the peripherals, in driving the coaxial line. Circuitry for incorporation in the tap provides a matching impedance when driving the coaxial line, and a high impedance on the line during the off-time in order to reduce line loading.
Inventors
- 👤 Terry P. Bowen
- 👤 George J. Lawrence
- 👤 Lawrence G. Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:45
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/28; H04L12/40; H04L12/40006; H04L12/40045; H04B; H04B10/00; H04B10/27; H04B10/278
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
A network system for distributing digital information comprising: a coaxial line for bussing a main data signal at relatively high frequencies and bussing power at relatively low frequencies; at least one tap means for electrically interfacing with said coaxial line, comprising: a. receiving means for sampling said main signal, said receiving means including transducing means for transforming said sampled main signal into a light signal for output, and optical splitting means for changing said light signal output into a multiple output for distribution to multiple peripheral machines; b. driving means including optical transducing means for changing light signal inputs from said multiple peripheral machines into an electrical input signals, and means for driving a signal along said coaxial line in response to said electrical input signals, and switching means for connecting and disconnecting said driving means from said coaxial line; and c. conversion means responsive to said power frequencies for supplying operating power to said receiving and driver means.
Claim 2
Dependent Claim
159 words
A network system for distributing digital information comprising: a coaxial line for bussing a main data signal at relatively high frequencies and bussing power at relatively low frequencies; at least one tap means for electrically interfacing with said coaxial line, comprising: a. receiving means for sampling said main signal, said receiving means including transducing means for transforming said sampled main signal into a light signal for output, and optical splitting means for changing said light signal output into a multiple output for distribution to multiple peripheral machines; b. driving means including optical transducing means for changing light signal inputs from said multiple peripheral machines into an electrical input signals, and means for driving a signal along said coaxial line in response to said electrical input signals, and switching means for connecting and disconnecting said driving means from said coaxial line; and c. conversion means responsive to said power frequencies for supplying operating power to said receiving and driver means.
Claim 3
Dependent Claim
28 words
A network system as set forth in claim 1, said tap means further comprising filter means for coupling in said driver and receiving means at said signal frequencies.
Claim 4
Dependent Claim
28 words
A network as set forth in claim 1, wherein said tap means has a relatively high impedance on said coaxial line during an off-time to reduce line loading.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |