SIGNAL AND DEVICES FOR WIRED NETWORKS
1 Assignment
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Accused Products
Abstract
A signal for use on a wired network interconnecting electronic devices, comprising: a base voltage for conveying power to the electronic devices; a pulsed voltage signal bearing coded information for transfer between the electronic devices; and a digital signal superimposed onto selected portions of the pulsed voltage signal, wherein the digital signal comprises a carrier signal modulated by a data signal for transfer between the electronic devices. This is used in fire alarm networks, for example, to convey multimedia or other data such as control signals, whilst maintaining compatibility with existing protocols using the pulsed voltage signal.
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Citations
87 Claims
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1-73. -73. (canceled)
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74. A signal for use on a wired network interconnecting electronic devices, comprising:
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a base voltage for conveying power to the electronic devices; a pulsed voltage signal bearing coded information for transfer between the electronic devices; and a digital signal superimposed onto selected portions of the pulsed voltage signal, wherein the digital signal comprises a carrier signal with a frequency substantially greater than that of the pulsed voltage signal, the carrier signal being modulated by a data signal for transfer of the data signal between the electronic devices. - View Dependent Claims (75, 76, 77, 78, 79, 80, 81, 84, 85, 86, 87)
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82. An electronic device configured for communication with other such electronic devices over a wired network, the electronic device comprising means for generating and/or for processing a signal, and means for drawing power from that signal, the signal comprising:
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a base voltage for conveying power to the electronic devices; a pulsed voltage signal bearing coded information for transfer between the electronic devices; and a digital signal superimposed onto selected portions of the pulsed voltage signal, wherein the digital signal comprises a carrier signal with a frequency substantially greater than that of the pulsed voltage signal, the carrier signal being modulated by a data signal for transfer of the data signal between the electronic devices. - View Dependent Claims (83)
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Specification