Secure implementation of network-based sensors
First Claim
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1. A processor communication system, comprising:
- a first processor configured to transmit data packets;
a second processor configured to receive data packets;
a first one-way link, physically configured to carry signals in one direction and to be incapable of carrying signals in the opposite direction, which is coupled to the first and second processors so as to carry data packets from the first processor to the second processor and to be incapable of carrying signals from the second processor to the first processor;
a second one-way link, physically configured to carry signals in one direction and to be incapable of carrying signals in the opposite direction, which is coupled to the first and second processors so as to carry commands from the second processor to the first processor and to be incapable of carrying signals from the first processor to the second processor; and
a switch on the second one-way link, which has a first state in which the switch allows transmission of commands to the first processor over the second one-way link and a second state in which the switch prevents transmission over the second one-way link,wherein the switch is configured to allow transmission of commands to the first processor in response to a predetermined condition and to prevent transmission over the second one-way link when the predetermined condition is not satisfied.
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Abstract
Sensing apparatus includes a network camera, which is configured to capture images of a scene and to output a sequence of data packets containing digitized video data responsively to the images. A one-way link is coupled to the network camera so as to transmit the data packets from the network camera to a packet communication network.
118 Citations
8 Claims
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1. A processor communication system, comprising:
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a first processor configured to transmit data packets; a second processor configured to receive data packets; a first one-way link, physically configured to carry signals in one direction and to be incapable of carrying signals in the opposite direction, which is coupled to the first and second processors so as to carry data packets from the first processor to the second processor and to be incapable of carrying signals from the second processor to the first processor; a second one-way link, physically configured to carry signals in one direction and to be incapable of carrying signals in the opposite direction, which is coupled to the first and second processors so as to carry commands from the second processor to the first processor and to be incapable of carrying signals from the first processor to the second processor; and a switch on the second one-way link, which has a first state in which the switch allows transmission of commands to the first processor over the second one-way link and a second state in which the switch prevents transmission over the second one-way link, wherein the switch is configured to allow transmission of commands to the first processor in response to a predetermined condition and to prevent transmission over the second one-way link when the predetermined condition is not satisfied. - View Dependent Claims (2, 3, 4, 5, 6, 8)
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7. A processor communication system, comprising:
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a first processor configured to transmit data packets; a second processor configured to receive data packets; a first one-way link, physically configured to carry signals in one direction and to be incapable of carrying signals in the opposite direction, which is coupled to the first and second processors so as to carry data packets from the first processor to the second processor and to be incapable of carrying signals from the second processor to the first processor; a second one-way link, physically configured to carry signals in one direction and to be incapable of carrying signals in the opposite direction, which is coupled to the first and second processors so as to carry commands from the second processor to the first processor and to be incapable of carrying signals from the first processor to the second processor; and a switch on the second one-way link, which has a first state in which the switch allows transmission of commands to the first processor over the second one-way link and a second state in which the switch prevents transmission over the second one-way link, wherein the switch is configured to permit transmission to the first processor only when the first one-way link is inactive.
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Specification
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Current AssigneeWaterfall Security Solutions Ltd.
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Original AssigneeWaterfall Security Solutions Ltd.
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InventorsFrenkel, Lior, Zilberstein, Amir
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Primary Examiner(s)Joo, Joshua
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Application NumberUS13/487,265Publication NumberTime in Patent Office785 DaysField of Search709202-203, 709/206, 709/224, 709230-231US Class Current709/202CPC Class CodesH04N 23/661 Transmitting camera control...H04N 7/181 for receiving images from a...
