US4764849A
Expired / Lapsed
US
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Data bus distribution apparatus
Assignee: Motorola Solutions Inc
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Filing: 1986-12-19
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Granted: 1988-08-16
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Expires: 2006-12-19
Abstract
Abstract A coaxial data bus distribution apparatus for coupling a variable number of peripheral devices to the data bus with a predetermined electrical distance between each point of coupling. A coaxial cable of predetermined length is connected between the output connector of a first input-output pair of coaxial connectors and the input of a second pair of coaxial connectors. Connection between the coaxial connector pair, mounted on a bus interconnect board, and a peripheral device is made by a predetermined length two wire non-coaxial connection to a peripheral device back plane.
Inventors
- 👤 Safina J. Khan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:34
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/28; H04L12/46; H04L12/4604; H04L12/462; H04L12/4625; H04L12/40; H04Q; H04Q1/00; H04Q1/02; H04Q1/14; H04Q1/142; H04L12/4013; H04L12/407; H04L12/413
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
207 words
A coaxial data bus distribution apparatus providing distributive loading to the bus from a variable number of peripheral device circuit interconnections at essentially equal electrical distances between interconnections, comprising: a first circuit board with a plurality of connectors mounted thereon; a second circuit board having mounted thereon at least: (a) a plurality of coaxial connectors, each said coaxial connector electrically coupled via said second circuit board to one other coaxial connector whereby a coaxial connector pair having an input and an output coaxial connector is identified for each said connector of said first circuit board, and (b) a plurality of non-coaxial connectors, each said non-coaxial connector electrically coupled to a respective one of said coaxial connector pairs; a plurality of coaxial cables of predetermined length, each coaxial cable connected between a selected output of one of said coaxial connector pairs and a selected input of another of said coaxial connector pairs, whereby said plurality of coaxial connector pairs may be series coupled; and a plurality of wires of predetermined length and terminating at each end with a non-coaxial connector, each of said plurality of wires connected between a selected one of said second circuit board non-coaxial connectors and a selected one of said first circuit board connectors.
Claim 2
Dependent Claim
207 words
A coaxial data bus distribution apparatus providing distributive loading to the bus from a variable number of peripheral device circuit interconnections at essentially equal electrical distances between interconnections, comprising: a first circuit board with a plurality of connectors mounted thereon; a second circuit board having mounted thereon at least: (a) a plurality of coaxial connectors, each said coaxial connector electrically coupled via said second circuit board to one other coaxial connector whereby a coaxial connector pair having an input and an output coaxial connector is identified for each said connector of said first circuit board, and (b) a plurality of non-coaxial connectors, each said non-coaxial connector electrically coupled to a respective one of said coaxial connector pairs; a plurality of coaxial cables of predetermined length, each coaxial cable connected between a selected output of one of said coaxial connector pairs and a selected input of another of said coaxial connector pairs, whereby said plurality of coaxial connector pairs may be series coupled; and a plurality of wires of predetermined length and terminating at each end with a non-coaxial connector, each of said plurality of wires connected between a selected one of said second circuit board non-coaxial connectors and a selected one of said first circuit board connectors.
Claim 3
Dependent Claim
52 words
A coaxial data bus distribution apparatus in accordance with claim 1 wherein said coupling of each said plurality of non-coaxial connectors to a respective one said coaxial connector pair further comprises a coupling to a center conductor of said coaxial pair and a coupling to a ground conductor of said coaxial pair.
Claim 4
Dependent Claim
26 words
A coaxial data bus distribution apparatus in accordance with claim 1 wherein said coaxial cable predetermined length further comprises a length approximately equal to 0.5 meters.
Claim 5
Dependent Claim
25 words
A coaxial data bus distribution apparatus in accordance with claim 1 wherein said wire predetermined length further comprises a length approximately equal to 6.35 centimeters.
Claim 6
Dependent Claim
235 words
A radiotelephone exchange common channel signalling (CCS) apparatus providing an interface between a local area network (LAN) and a variable number of peripheral devices in which each peripheral device connects to the coaxial cable bus of the LAN at essentially equal electrical distances between the connections, comprising: a peripheral device back plane with a plurality of connectors mounted thereon; a bus interconnect board having mounted thereon at least: (a) a plurality of coaxial connectors, each said coaxial connector electrically coupled via said bus interconnect board to one other coaxial connector whereby a coaxial connector pair having an input and an output coaxial connector is identified for each said connector of said peripheral device back plane, and (b) plurality of non-coaxial connectors, each said non-coaxial connector electrically coupled to a respective one of said coaxial connector pairs; a plurality of coaxial cables of predetermined length, terminating at each end with a coaxial connector, each coaxial cable connected between a selected output of one of said coaxial connector pairs and a selected input of another of said coaxial connector pairs, whereby said plurality of coaxial connector pairs may be series coupled; and a plurality of wires of predetermined length and terminating at each end with a non-coaxial connector, each of said plurality of wires connected between a selected one of said bus interconnect board non-coaxial connectors and a selected one of said peripheral device back plane connectors.
Claim 7
Dependent Claim
235 words
A radiotelephone exchange common channel signalling (CCS) apparatus providing an interface between a local area network (LAN) and a variable number of peripheral devices in which each peripheral device connects to the coaxial cable bus of the LAN at essentially equal electrical distances between the connections, comprising: a peripheral device back plane with a plurality of connectors mounted thereon; a bus interconnect board having mounted thereon at least: (a) a plurality of coaxial connectors, each said coaxial connector electrically coupled via said bus interconnect board to one other coaxial connector whereby a coaxial connector pair having an input and an output coaxial connector is identified for each said connector of said peripheral device back plane, and (b) plurality of non-coaxial connectors, each said non-coaxial connector electrically coupled to a respective one of said coaxial connector pairs; a plurality of coaxial cables of predetermined length, terminating at each end with a coaxial connector, each coaxial cable connected between a selected output of one of said coaxial connector pairs and a selected input of another of said coaxial connector pairs, whereby said plurality of coaxial connector pairs may be series coupled; and a plurality of wires of predetermined length and terminating at each end with a non-coaxial connector, each of said plurality of wires connected between a selected one of said bus interconnect board non-coaxial connectors and a selected one of said peripheral device back plane connectors.
Claim 8
Dependent Claim
53 words
A radiotelephone exchange common channel signalling apparatus in accordance with claim 5 wherein said coupling of each said plurality of non-coaxial connectors to a respective one said coaxial connector pair further comprises a coupling to a center conductor of said coaxial pair and a coupling to a ground conductor of said coaxial pair.
Claim 9
Dependent Claim
27 words
A radiotelephone exchange common channel signalling apparatus in accordance with claim 5 wherein said coaxial cable predetermined length further comprises a length approximately equal to 0.5 meters.
Claim 10
Dependent Claim
26 words
A radiotelephone exchange common channel signalling apparatus in accordance with claim 5 wherein said wire predetermined length further comprises a length approximately equal to 6.35 centimeters.
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) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |