Communication system and method over local area network wiring
First Claim
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1. A device for a local area network (LAN), the LAN including a LAN cable having at least four wire pairs to carry a plurality of data signals, and the device comprising:
- a first transformer having a primary winding and a secondary winding, the first transformer being operative to pass a first data signal;
a second transformer having a primary winding and a secondary winding, the second transformer being operative to pass a second data signal;
a third transformer having a primary winding and a secondary winding, the third transformer being operative to pass a third data signal;
a fourth transformer having a primary winding and a secondary winding, the fourth transformer being operative to pass a fourth data signal, and the primary winding of each one of the transformers being communicatively coupled to a respective one of the four wire pairs, the secondary winding of each one of the transformers being arranged within the device for transferring a respective one of the data signals to or from the associated primary winding, and a first center-tap connection of the primary winding of any one of the transformers to be paired with a second center-tap connection of the primary winding of any other one of the transformers for providing a first phantom channel using the two respectively associated pairs of the four wire pairs;
circuitry configured to source a phantom signal over the phantom channel, the circuitry coupled to the first center-tap connection and the second center-tap connection; and
a single enclosure housing the circuitry and also housing the first, second, third and fourth transformers.
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Accused Products
Abstract
A device for enabling a local area network wiring structure to simultaneously carry digital data and analog telephone signals on the same transmission medium. It is particularly applicable to a network in star topology, in which remote data units (e.g. personal computers) are each connected to a hub through a cable comprising at least two pairs of conductors, providing a data communication path in each direction. Modules at each end of the cable provide a phantom path for telephony (voice band), signals between a telephone near the data set and a PBX, through both conductor pairs in a phantom circuit arrangement. All such communication paths function simultaneously and without mutual interference. The modules comprise simple and inexpensive passive circuit components.
250 Citations
20 Claims
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1. A device for a local area network (LAN), the LAN including a LAN cable having at least four wire pairs to carry a plurality of data signals, and the device comprising:
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a first transformer having a primary winding and a secondary winding, the first transformer being operative to pass a first data signal; a second transformer having a primary winding and a secondary winding, the second transformer being operative to pass a second data signal; a third transformer having a primary winding and a secondary winding, the third transformer being operative to pass a third data signal; a fourth transformer having a primary winding and a secondary winding, the fourth transformer being operative to pass a fourth data signal, and the primary winding of each one of the transformers being communicatively coupled to a respective one of the four wire pairs, the secondary winding of each one of the transformers being arranged within the device for transferring a respective one of the data signals to or from the associated primary winding, and a first center-tap connection of the primary winding of any one of the transformers to be paired with a second center-tap connection of the primary winding of any other one of the transformers for providing a first phantom channel using the two respectively associated pairs of the four wire pairs; circuitry configured to source a phantom signal over the phantom channel, the circuitry coupled to the first center-tap connection and the second center-tap connection; and a single enclosure housing the circuitry and also housing the first, second, third and fourth transformers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification
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Current AssigneeMosaid Technologies Incorporated (MOSAID Technologies Inc. (f/k/a Conversant Intellectual Property Management))
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Original AssigneeMosaid Technologies Incorporated (MOSAID Technologies Inc. (f/k/a Conversant Intellectual Property Management))
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InventorsBinder, Yehuda
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Primary Examiner(s)Qureshi, Afsar M
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Application NumberUS12/912,235Publication NumberTime in Patent Office1,162 DaysField of Search370200-493, 340/310.11, 340/693.1, 375222-288, 375/258, 379/90.01, 379/90.08, 379156-173, 379/93.08US Class Current370/200CPC Class CodesH04B 3/542 the information being in di...H04L 12/66 Arrangements for connecting...H04L 2012/6421 Medium of transmission, e.g...H04L 2012/6424 Access arrangementsH04L 2012/644 StarH04L 5/20 using different combination...H04M 11/062 using different frequency b...H04M 11/066 Telephone sets adapted for ...Y10S 439/95 Electrical connector adapte...
