US6069899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Home area network system and method
Assignee: TRAVERTINE SYSTEMS
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Filing: 1997-08-28
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Granted: 2000-05-30
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Expires: 2017-08-28
Abstract
Abstract A home area network system and method uses existing plain old telephone system (POTS) wiring to network computers in a home without disrupting conventional telephone services. The home area network assigns a network address to each computer coupled to the network and communicates using a broadband communication method occupying the portion of the spectrum above the baseband portion used by ordinary telephone service. The home area network employs quadrature phase shift keying (QPSK) modulation on unshielded twisted pair (UTP) wiring arranged in an arbitrary topology. The home area network additionally employs adaptive equalization for each computer pair coupling as well as adaptive error correction.
Inventors
- 👤 Peter F. Foley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:30
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06; H04M11/062; H04N; H04N7/00; H04N7/10; H04N7/106; H04N7/108
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
215 words
A local area computer network for networking a plurality of network clients at a customer premises, the network clients communicating using analog bandpass signals, comprising: an infrastructure of unshielded twisted pair (UTP) wiring at the customer premises, the UTP wiring disposed to send and receive plain old telephone service (POTS) signals; at plurality of network clients coupled to the UTP wiring; at least one network client having a network interface transmitter module including: a signal modulator having signal processing modules configured to convert a digital bit stream into a modulated digital bandpass signal at an output of the signal modulator; analog interface circuitry including a digital to analog converter coupled to the signal modulator output, the analog interface circuitry configured to convert the modulated digital bandpass signal to an analog bandpass signal coupled to the customer premises wiring; and at least one network client having a network interface receiver including: analog interface circuitry having an input coupled to the customer premises wiring, the analog interface circuitry including an analog to digital converter having an output; and a bandpass signal demodulator coupled to the output of the analog to digital converter, the bandpass demodulator having signal processing modules configured to convert digitized bandpass signals to baseband digital bit streams suitable for processing by the network client.
Claim 2
Dependent Claim
215 words
A local area computer network for networking a plurality of network clients at a customer premises, the network clients communicating using analog bandpass signals, comprising: an infrastructure of unshielded twisted pair (UTP) wiring at the customer premises, the UTP wiring disposed to send and receive plain old telephone service (POTS) signals; at plurality of network clients coupled to the UTP wiring; at least one network client having a network interface transmitter module including: a signal modulator having signal processing modules configured to convert a digital bit stream into a modulated digital bandpass signal at an output of the signal modulator; analog interface circuitry including a digital to analog converter coupled to the signal modulator output, the analog interface circuitry configured to convert the modulated digital bandpass signal to an analog bandpass signal coupled to the customer premises wiring; and at least one network client having a network interface receiver including: analog interface circuitry having an input coupled to the customer premises wiring, the analog interface circuitry including an analog to digital converter having an output; and a bandpass signal demodulator coupled to the output of the analog to digital converter, the bandpass demodulator having signal processing modules configured to convert digitized bandpass signals to baseband digital bit streams suitable for processing by the network client.
Claim 3
Dependent Claim
43 words
The system of claim 1 further comprising: at least one POTS compatible device coupled to the customer premises wiring; and a wide area network interface coupled to the customer premises wiring, the wide area network delivering POTS services to the customer premises wiring.
Claim 4
Dependent Claim
17 words
The system of claim 2 wherein the wide area network is the public switched telephone network (PSTN).
Claim 5
Dependent Claim
17 words
The system of claim 2 wherein the wide area network is a coupling to a subscriber loop.
Claim 6
Dependent Claim
20 words
The system of claim 2 wherein the wide area network interface is a coupling to a coaxial cable transmission medium.
Claim 7
Dependent Claim
19 words
The system of claim 2 wherein the wide area network interface is a coupling to a wireless transmission medium.
Claim 8
Independent Claim
35 words
The system of 2 further comprising a passive filter coupled to the POTS compatible device, the lowpass filter having a stopband including at least the portion of the spectrum occupied by the analog bandpass signals.
Claim 9
Independent Claim
35 words
The system of 2 further comprising a passive filter coupled to the POTS compatible device, the lowpass filter having a stopband including at least the portion of the spectrum occupied by the analog bandpass signals.
Claim 10
Dependent Claim
32 words
The system of claim 7 wherein the filter is a passive diplexer filter having an impedance matching the impedance of the UTP wiring for a frequency range corresponding to the bandpass signals.
Claim 11
Dependent Claim
35 words
The system of claim 8 further comprising a passive filter at the wide area network interface, the filter having a stopband including at least the portion of the spectrum occupied by the analog bandpass signals.
Claim 12
Dependent Claim
32 words
The system of claim 9 wherein the filter is a passive diplexer filter having an impedance matching the impedance of the UTP wiring for a frequency range corresponding to the bandpass signals.
Claim 13
Dependent Claim
17 words
The system of claim 1 wherein the bandpass demodulator is a quadrature phase shift keyed (QPSK) demodulator.
Claim 14
Dependent Claim
16 words
The system of claim 1 wherein the bandpass demodulator is a quadrature amplitude modulation (QAM) demodulator.
Claim 15
Dependent Claim
61 words
The system of claim 1 wherein a network client having a transmitting network interface module further comprises: a digital video interface configured to receive a digital video bit stream from a video source, the digital interface coupled to the transmitting network interface module to deliver the received digital video bit stream to a network client having a receiving network interface module.
Claim 16
Dependent Claim
14 words
The system of claim 13 wherein the video source is a digital satellite service.
Claim 17
Dependent Claim
14 words
The system of claim 13 wherein the video source is a coaxial cable-based source.
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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) | 2003-05-30 | 2003-11-29 | 2004-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-30 | 2007-11-29 | 2008-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-30 | 2011-11-29 | 2012-05-30 | $7700.00 | Window Closed / Lapsed |