METHOD FOR SECURE COMMUNICATION BETWEEN DEVICES
First Claim
1. A method for communicating between a first device, in particular an implantable medical device, and a second device, in particular a reader for reading data from the first device and for controlling the first device, the method comprising the steps of:
- a first and second device communicating by exchanging messages that are based on signals that are transmitted through a first communication channel and/or through a second communication channel, wherein the first and second communication channel have different signal propagation velocities;
at least one of the first and second device computing the distance to the other device based on communication signal delays caused by signal propagation velocities; and
controlling access of the second device to the first device depending on the computed distance.
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Abstract
A method for communicating between a first device and a second device, includes the steps of the first and second device communicating by exchanging messages that are based on signals that are transmitted through a first communication channel and/or through a second communication channel, wherein the first and second communication channel have different signal propagation velocities; at least one of the first and second device computing the distance to the other device based on communication signal delays caused by the signal propagation velocities; wherein the method includes the further steps of controlling access of the second device to the first device depending on the computed distance.
56 Citations
16 Claims
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1. A method for communicating between a first device, in particular an implantable medical device, and a second device, in particular a reader for reading data from the first device and for controlling the first device, the method comprising the steps of:
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a first and second device communicating by exchanging messages that are based on signals that are transmitted through a first communication channel and/or through a second communication channel, wherein the first and second communication channel have different signal propagation velocities; at least one of the first and second device computing the distance to the other device based on communication signal delays caused by signal propagation velocities; and controlling access of the second device to the first device depending on the computed distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device, in particular an implantable medical device, configured to communicate with a further device, in particular with a reader for reading data from the device and optionally for controlling the device, the device comprising:
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a first transceiver for sending and receiving messages through a first communication channel; a second transceiver for sending and/or receiving messages through a second communication channel; wherein the first and second communication channel have different signal propagation velocities; the device being configured to exchange messages through the first communication channel and/or through the second communication channel; to compute the distance to the further device based on communication signal delays caused by the difference in signal propagation velocities; and depending on the computed distance, to accept data from the further device and optionally also to control access to the device. - View Dependent Claims (16)
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Specification