US5299956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low cross talk electrical connector system
Assignee: Optical Cable Corp
•
Filing: 1992-03-23
•
Granted: 1994-04-05
•
Expires: 2012-03-23
Abstract
Abstract There is provided an apparatus for reducing pair to pair cross talk which arises in electrical connectors due to closely spaced elongated parallel contacts. The cross talk which occurs within the connector is reduced by modifying certain circuit paths either inside or outside of the connector so that each conductor of a first pair which is parallel to and cross talking with an adjacent conductor of a second pair in the connector is relocated adjacent and parallel to the other conductor of the second pair over a predetermined distance. It is preferred that the relocation of the circuit paths occur on a circuit board which is attached to the connector.
Inventors
- 👤 Kenneth W. Brownell
- 👤 Sterling A. Vaden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:55
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0216; H05K1/0228; H01; H01R; H01R13/00; H01R13/646; H01R13/6461; H01R13/6467; H01R13/6469; H04; H04B; H04B3/00; H04B3/02; H04B3/32; H01R24/00; H01R24/60; H01R24/62; H01R24/64; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/09218; H05K2201/09236; H05K2201/09245; H05K2201/10; H05K2201/10007; H05K2201/10189; Y; Y10; Y10S; Y10S439/00; Y10S439/941
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
215 words
A low cross talk electrical signal transmission system comprising: an electrical connection apparatus; said electrical connection apparatus including an intermatable connector and a substrate; said intermatable connector including a plug and a jack; said jack attached to said substrate; said intermatable connector and said substrate having at least first, second, third and fourth conductors; said first and second conductors forming a first signal pair; said third and fourth conductors forming a second signal pair; said first and second conductors being adjacent to and parallel to one another through at least a major portion of said electrical intermatable connector; said third conductor being adjacent to and parallel to said first conductor, and said fourth conductor being adjacent to and parallel to said second conductor through at least a portion of said intermatable connector thereby forming a first group of signal paths thus inducing cross talk from one signal pair to another signal pair in said intermatable connector when signals are applied to either of said signal pairs; said third conductor being adjacent to and parallel to said second conductor and said fourth conductor being adjacent to and parallel to said first conductor for at least a portion of said substrate forming a second group of signal paths, thereby cancelling a substantial amount of said cross talk.
Claim 2
Dependent Claim
215 words
A low cross talk electrical signal transmission system comprising: an electrical connection apparatus; said electrical connection apparatus including an intermatable connector and a substrate; said intermatable connector including a plug and a jack; said jack attached to said substrate; said intermatable connector and said substrate having at least first, second, third and fourth conductors; said first and second conductors forming a first signal pair; said third and fourth conductors forming a second signal pair; said first and second conductors being adjacent to and parallel to one another through at least a major portion of said electrical intermatable connector; said third conductor being adjacent to and parallel to said first conductor, and said fourth conductor being adjacent to and parallel to said second conductor through at least a portion of said intermatable connector thereby forming a first group of signal paths thus inducing cross talk from one signal pair to another signal pair in said intermatable connector when signals are applied to either of said signal pairs; said third conductor being adjacent to and parallel to said second conductor and said fourth conductor being adjacent to and parallel to said first conductor for at least a portion of said substrate forming a second group of signal paths, thereby cancelling a substantial amount of said cross talk.
Claim 3
Dependent Claim
15 words
A system as set forth in claim 1 wherein said substrate is a circuit board.
Claim 4
Dependent Claim
30 words
A system as set forth in claim 1 wherein the length of said second group of circuit paths is substantially the same length as said first group of circuit paths.
Claim 5
Dependent Claim
32 words
A system as set forth in claim 1 wherein said connector apparatus includes a jumper including a second jack, a plug and a substrate connected between said second jack and said plug.
Claim 6
Dependent Claim
15 words
A system as set forth in claim 4 wherein said second substrate is a cable.
Claim 7
Dependent Claim
29 words
A system as set forth in claim 4 wherein said second substrate is received within an enclosure; a second jack and a second plug are attached to said enclosure.
Claim 8
Dependent Claim
153 words
A low cross talk electrical signal transmission system comprising: at least four conductive paths formed by a first pair of conductors and a second pair of conductors; each pair of conductors being a part of a separate electrical circuit each conducting separate electrical signals; an intermatable electrical connector including a plug and a jack; first portions of each of said conductive paths being through said connector; said conductive paths being substantially parallel to one another through at least a part of said connector thereby causing pair to pair signal interference when an electrical signal is on at least one of said pairs; a substrate; second portions of each of said conductive paths being on said substrate; said substrate connected to said jack; a capacitance located on said substrate for reducing the pair to pair signal interference, said capacitance formed by the arrangement of said second portions of said conductive paths on said substrate.
Claim 9
Dependent Claim
153 words
A low cross talk electrical signal transmission system comprising: at least four conductive paths formed by a first pair of conductors and a second pair of conductors; each pair of conductors being a part of a separate electrical circuit each conducting separate electrical signals; an intermatable electrical connector including a plug and a jack; first portions of each of said conductive paths being through said connector; said conductive paths being substantially parallel to one another through at least a part of said connector thereby causing pair to pair signal interference when an electrical signal is on at least one of said pairs; a substrate; second portions of each of said conductive paths being on said substrate; said substrate connected to said jack; a capacitance located on said substrate for reducing the pair to pair signal interference, said capacitance formed by the arrangement of said second portions of said conductive paths on said substrate.
Claim 10
Dependent Claim
15 words
A system as set forth in claim 7 wherein said substrate is a circuit board.
Claim 11
Dependent Claim
14 words
A system as set forth in claim 7 wherein said substrate is a cable.
Claim 12
Dependent Claim
115 words
A system as set forth in claim 7 wherein each pair includes a first and a second conductor; said first conductor of said first pair is adjacent to said second conductor in said second pair, and said second conductor of said first pair is adjacent to said first conductor in said second pair for the length of said conductive paths in said connector; said capacitance formed by said first conductor of said first pair being adjacent to said first conductor of said second pair, and said second conductor of said first pair being adjacent to said second conductor of said second pair for a portion of the length of said conductive paths on said substrate.
Claim 13
Dependent Claim
25 words
A low cross talk electrical signal transmission system as set forth in claim 7 wherein said capacitance is said second portions of said conductive paths.
Claim 14
Dependent Claim
216 words
An electrical connector system comprising: an intermatable connector having at least four parallel adjacent contacts; two of said contacts being inner contacts and forming a first conductive pair; two other contacts adjacent to said inner contacts on the outside thereof forming a second conductive pair; said connector including a jack and a plug; a carrier; said jack connected to said carrier; said carrier including at least four conductors; each of said conductors connected to one of said contacts; said first contact of said first pair connected to said first conductor of said first pair; said second contact of said first pair connected to said second conductor of said second pair; said first contact of said second pair adjacent to said first conductor of said second pair; said second contact of said second pair connected to said second conductor of said second pair; for a substantial portion of the length of said carrier said first conductor of said second pair being adjacent to said second conductor of said first pair, and said second conductor of said second pair being adjacent to said first conductor of said first pair whereby a substantial amount of pair to pair interference which is generated in said connector is cancelled on said carrier wherein said interference is substantially reduced in said system.
Claim 15
Dependent Claim
216 words
An electrical connector system comprising: an intermatable connector having at least four parallel adjacent contacts; two of said contacts being inner contacts and forming a first conductive pair; two other contacts adjacent to said inner contacts on the outside thereof forming a second conductive pair; said connector including a jack and a plug; a carrier; said jack connected to said carrier; said carrier including at least four conductors; each of said conductors connected to one of said contacts; said first contact of said first pair connected to said first conductor of said first pair; said second contact of said first pair connected to said second conductor of said second pair; said first contact of said second pair adjacent to said first conductor of said second pair; said second contact of said second pair connected to said second conductor of said second pair; for a substantial portion of the length of said carrier said first conductor of said second pair being adjacent to said second conductor of said first pair, and said second conductor of said second pair being adjacent to said first conductor of said first pair whereby a substantial amount of pair to pair interference which is generated in said connector is cancelled on said carrier wherein said interference is substantially reduced in said system.
Claim 16
Dependent Claim
15 words
A system as set forth in claim 12 wherein said carrier is a circuit board.
Claim 17
Dependent Claim
60 words
A system as set forth in claim 12 further including a plug having at least four adjacent contacts and at least four parallel conduction; the length of said conductors on said substantial portion of said carrier being substantially equal to the length of the contacts in said connector and said plug plus the length of said conductors in said plug.
Claim 18
Dependent Claim
24 words
A system as set forth in claim 12 wherein said carrier is a cable; a jumper; said cable forming a part of said jumper.
Claim 19
Dependent Claim
41 words
A system as set forth in claim 15 wherein said jumper includes a plug connected to said cable; said plug having at least four contacts and at least four parallel conductors; said plug adapted to be removably received in said connector.
Claim 20
Dependent Claim
34 words
A system as set forth in claim 16 wherein said jumper includes a second connector connected to said cable on the opposite end from said plug; said second connector having at least four contacts.
Claim 21
Dependent Claim
49 words
A system as set forth in claim 17 wherein the length of said conductors on said substantial portion of said carrier being substantially equal to the sum of the length of the contacts in both of said connectors and the length of said conductors in both of said plugs.
Claim 22
Dependent Claim
97 words
A low cross talk electrical connector system comprising: an intermatable electrical connector having at least two pairs of closely spaced electrical contacts thereby causing pair to pair cross talk when electrical signals are present on at least one of said pairs of said contacts; said connector including a plug and a jack; a carrier; said carrier connected to said jack; said carrier including at least four conductors; each of said conductors connected to one of said contacts; said conductors being physically oriented on said carrier for substantially reducing pair to pair cross talk originating in said connector.
Claim 23
Dependent Claim
97 words
A low cross talk electrical connector system comprising: an intermatable electrical connector having at least two pairs of closely spaced electrical contacts thereby causing pair to pair cross talk when electrical signals are present on at least one of said pairs of said contacts; said connector including a plug and a jack; a carrier; said carrier connected to said jack; said carrier including at least four conductors; each of said conductors connected to one of said contacts; said conductors being physically oriented on said carrier for substantially reducing pair to pair cross talk originating in said connector.
Claim 24
Dependent Claim
24 words
A system as set forth in claim 19 wherein at least one of said conductors is crossed over at least another of said conductors.
References Cited (Backward Citations)
US4418239A
Cited
JPS61256850A
Cited
US4698025A
Cited
US4878847A
Cited
JPH0268484A
Cited
JPH0291987A
Cited
GB2233157A
Cited
EP0421174A2
Cited
EP0525703A1
Cited
US5186647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-04-04 | 1997-10-04 | 1998-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-04 | 2001-10-04 | 2002-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-04 | 2005-10-04 | 2006-04-05 | $7700.00 | Window Closed / Lapsed |