US5945631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
IEEE 1394 active wall disconnect and aircraft qualified cable
Assignee: Sony Corp
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Filing: 1996-09-16
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Granted: 1999-08-31
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Expires: 2016-09-16
Abstract
Abstract An IEEE 1394 cable includes two individually shielded twisted data pairs of wires, carrying differential signals TPA and TPB, and two power conductors, carrying power signals VP and VG. The two twisted data pairs of wires are each individually shielded by a braided shield. The cable also includes an overall braided shield and a no smoke, no halogen, flame retardant jacket. Preferably, the cable has a length of 4.5 meters and includes 26 gauge wire for the two twisted data pairs. Longer, alternate embodiments of the cable incorporate heavier gauge wire for the two twisted data pairs. Preferably, the gauge wire used for the two power conductors is constant for the different lengths of cable. An active disconnect is used to provide an active repeater between IEEE 1394 cables. The active disconnect provides ports, into which cables are connected, and a physical connection including electronics necessary to form an active node on the IEEE 1394 serial bus. The active disconnect receives signals from one port and resynchronizes, encodes and transmits those signals out of the other ports. The active disconnect draws power from the power conductors of the IEEE 1394 cables which are coupled to it.
Inventors
- 👤 Gregory K. Henrikson
- 👤 Robert Troxel
- 👤 Loi Ninh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:03
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/003; H01B11/00; H01B11/02; H01B11/06; H01B11/10; H01B11/1033
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
166 words
An IEEE 1394 standard compliant cable having a length greater than 4.5 meters comprising: a. a first twisted pair of wires for carrying a first differential signal, wherein the first twisted pair of wires comprise a wire of a diameter of at least 26 American Wire Gauge; b. a first internal braided shield formed around the first twisted pair of wires for reducing EMI emissions from the first twisted pair; c. a second twisted pair of wires for carrying a second differential signal, wherein the second twisted pair of wires comprise a wire of a diameter of at least 26 American Wire Gauge; d. a second internal braided shield formed around the second twisted pair of wires for reducing EMI emissions from the second twisted pair; e. a plurality of power conductors for carrying power signals; f. an overall braided shield formed around the power conductors and the first and second internal braided shields; and g. a flame retardant jacket formed around the overall braided shield.
Claim 2
Dependent Claim
166 words
An IEEE 1394 standard compliant cable having a length greater than 4.5 meters comprising: a. a first twisted pair of wires for carrying a first differential signal, wherein the first twisted pair of wires comprise a wire of a diameter of at least 26 American Wire Gauge; b. a first internal braided shield formed around the first twisted pair of wires for reducing EMI emissions from the first twisted pair; c. a second twisted pair of wires for carrying a second differential signal, wherein the second twisted pair of wires comprise a wire of a diameter of at least 26 American Wire Gauge; d. a second internal braided shield formed around the second twisted pair of wires for reducing EMI emissions from the second twisted pair; e. a plurality of power conductors for carrying power signals; f. an overall braided shield formed around the power conductors and the first and second internal braided shields; and g. a flame retardant jacket formed around the overall braided shield.
Claim 3
Dependent Claim
78 words
The IEEE 1394 cable as claimed in claim 1 further comprising a first connector at a first end of the cable and a second connector at a second end of the cable, the first and second connectors each including a first and second pin coupled to the first twisted pair of wires, a third and fourth pin coupled to the second twisted pair of wires and a fifth and sixth pin coupled to the plurality of power conductors.
Claim 4
Dependent Claim
28 words
The IEEE 1394 cable as claimed in claim 2 wherein both the first and second internal braided shields are aluminum/polyester film braided shields and further comprise insulating tape.
Claim 5
Dependent Claim
16 words
The IEEE 1394 cable as claimed in claim 3 wherein the insulating tape is PTFE tape.
Claim 6
Dependent Claim
17 words
The IEEE 1394 cable as claimed in claim 3 wherein the overall braided shield is aluminum/polyester film.
Claim 7
Dependent Claim
16 words
The IEEE 1394 cable as claimed in claim 5 wherein the flame retardant jacket is polyurethane.
Claim 8
Dependent Claim
100 words
An IEEE 1394 standard compliant cable having a length greater than 4.5 meters for coupling together two IEEE 1394 nodes, comprising: a. a first shielded twisted pair of wires for carrying a first differential signal, wherein the first twisted pair of wires comprise a wire of a diameter of at least 26 American Wire Gauge; b. a second shielded twisted pair of wires for carrying a second differential signal, wherein the second twisted pair of wires comprise a wire of a diameter of at least 26 American Wire Gauge; and c. a plurality of power conductors for carrying power signals.
Claim 9
Dependent Claim
100 words
An IEEE 1394 standard compliant cable having a length greater than 4.5 meters for coupling together two IEEE 1394 nodes, comprising: a. a first shielded twisted pair of wires for carrying a first differential signal, wherein the first twisted pair of wires comprise a wire of a diameter of at least 26 American Wire Gauge; b. a second shielded twisted pair of wires for carrying a second differential signal, wherein the second twisted pair of wires comprise a wire of a diameter of at least 26 American Wire Gauge; and c. a plurality of power conductors for carrying power signals.
Claim 10
Dependent Claim
78 words
The IEEE 1394 cable as claimed in claim 7 further comprising a first connector at a first end of the cable and a second connector at a second end of the cable, the first and second connectors each including a first and second pin coupled to the first twisted pair of wires, a third and fourth pin coupled to the second twisted pair of wires and a fifth and sixth pin coupled to the plurality of power conductors.
Claim 11
Dependent Claim
87 words
The IEEE 1394 cable as claimed in claim 8 further comprising: a. a first internal braided shield formed around the first twisted pair of wires for reducing EMI emissions from the first twisted pair; b. a second internal braided shield formed around the second twisted pair of wires for reducing EMI emissions from the second twisted pair; c. an overall braided shield formed around the power conductors and the first and second internal braided shields; and d. a flame retardant jacket formed around the overall braided shield.
Claim 12
Dependent Claim
167 words
An IEEE 1394 standard compliant cable having a length of at least 20 meters comprising: a. a first twisted pair of wires for carrying a first differential signal, wherein the first twisted pair of wires comprise a wire of a diameter of at least 18 American Wire Gauge; b. a first internal braided shield formed around the first twisted pair of wires for reducing EMI emissions from the first twisted pair; c. a second twisted pair of wires for carrying a second differential signal, wherein the second twisted pair of wires comprise a wire of a diameter of at least 18 American Wire Gauge; d. a second internal braided shield formed around the second twisted pair of wires for reducing EMI emissions from the second twisted pair; e. a plurality of power conductors for carrying power signals; f. an overall braided shield formed around the power conductors and the first and second internal braided shields; and g. a flame retardant jacket formed around the overall braided shield.
Claim 13
Dependent Claim
167 words
An IEEE 1394 standard compliant cable having a length of at least 20 meters comprising: a. a first twisted pair of wires for carrying a first differential signal, wherein the first twisted pair of wires comprise a wire of a diameter of at least 18 American Wire Gauge; b. a first internal braided shield formed around the first twisted pair of wires for reducing EMI emissions from the first twisted pair; c. a second twisted pair of wires for carrying a second differential signal, wherein the second twisted pair of wires comprise a wire of a diameter of at least 18 American Wire Gauge; d. a second internal braided shield formed around the second twisted pair of wires for reducing EMI emissions from the second twisted pair; e. a plurality of power conductors for carrying power signals; f. an overall braided shield formed around the power conductors and the first and second internal braided shields; and g. a flame retardant jacket formed around the overall braided shield.
Claim 14
Dependent Claim
78 words
The IEEE 1394 cable as claimed in claim 10 further comprising a first connector at a first end of the cable and a second connector at a second end of the cable, the first and second connectors each including a first and second pin coupled to the first twisted pair of wires, a third and fourth pin coupled to the second twisted pair of wires and a fifth and sixth pin coupled to the plurality of power conductors.
Claim 15
Dependent Claim
28 words
The IEEE 1394 cable as claimed in claim 11 wherein both the first and second internal braided shields are aluminum/polyester film braided shields and further comprise insulating tape.
Claim 16
Dependent Claim
16 words
The IEEE 1394 cable as claimed in claim 12 wherein the insulating tape is PTFE tape.
Claim 17
Dependent Claim
17 words
The IEEE 1394 cable as claimed in claim 12 wherein the overall braided shield is aluminum/polyester film.
Claim 18
Dependent Claim
16 words
The IEEE 1394 cable as claimed in claim 14 wherein the flame retardant jacket is polyurethane.
Claim 19
Dependent Claim
167 words
An IEEE 1394 standard compliant cable having a length of at least 30 meters comprising: a. a first twisted pair of wires for carrying a first differential signal, wherein the first twisted pair of wires comprise a wire of a diameter of at least 16 American Wire Gauge; b. a first internal braided shield formed around the first twisted pair of wires for reducing EMI emissions from the first twisted pair; c. a second twisted pair of wires for carrying a second differential signal, wherein the second twisted pair of wires comprise a wire of a diameter of at least 16 American Wire Gauge; d. a second internal braided shield formed around the second twisted pair of wires for reducing EMI emissions from the second twisted pair; e. a plurality of power conductors for carrying power signals; f. an overall braided shield formed around the power conductors and the first and second internal braided shields; and g. a flame retardant jacket formed around the overall braided shield.
Claim 20
Dependent Claim
167 words
An IEEE 1394 standard compliant cable having a length of at least 30 meters comprising: a. a first twisted pair of wires for carrying a first differential signal, wherein the first twisted pair of wires comprise a wire of a diameter of at least 16 American Wire Gauge; b. a first internal braided shield formed around the first twisted pair of wires for reducing EMI emissions from the first twisted pair; c. a second twisted pair of wires for carrying a second differential signal, wherein the second twisted pair of wires comprise a wire of a diameter of at least 16 American Wire Gauge; d. a second internal braided shield formed around the second twisted pair of wires for reducing EMI emissions from the second twisted pair; e. a plurality of power conductors for carrying power signals; f. an overall braided shield formed around the power conductors and the first and second internal braided shields; and g. a flame retardant jacket formed around the overall braided shield.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-30 | 2003-03-01 | 2003-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-30 | 2007-03-01 | 2007-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-30 | 2011-03-01 | 2011-08-31 | $7700.00 | Window Closed / Lapsed |