Abstract: A method for controlling gain of a line amplifier on a cable, the method comprising selecting an unused carrier frequency; transmitting a pulsed pilot signal on the unused carrier frequency into the cable; determining a pilot signal output strength by measuring signal strength of the pilot signal after amplification by the line amplifier; comparing the pilot signal output strength with a target signal strength to determine a difference; and adjusting the gain of the line amplifier corresponding to the difference.

Abstract: The present disclosure generally relates to a method for authenticating a user by means of an electronic device, where the electronic device comprises a first and a second control unit adapted to process a biometric representation from a biometric sensor. Preferably, the second control unit comprises a secure element and/or a secure block adapted to provide a secure processing environment. The present disclosure also relates to a corresponding electronic device and to a computer program product.

Abstract: A method for controlling gain of a line amplifier on a cable, the method comprising selecting an unused carrier frequency; transmitting a pulsed pilot signal on the unused carrier frequency into the cable; determining a pilot signal output strength by measuring signal strength of the pilot signal after amplification by the line amplifier; comparing the pilot signal output strength with a target signal strength to determine a difference; and adjusting the gain of the line amplifier corresponding to the difference.

Abstract: The present disclosure generally relates to a method for authenticating a user by means of an electronic device, where the electronic device comprises a first and a second control unit adapted to process a biometric representation from a biometric sensor. Preferably, the second control unit comprises a secure element and/or a secure block adapted to provide a secure processing environment. The present disclosure also relates to a corresponding electronic device and to a computer program product.

Abstract: Methods and devices for updating biometric template protection keys can include updating at least one stored feature transformation key with which a set of biometric data of a user initially has been transformed at a first client device at which the biometric data of the user was captured and enrolled with a network node, which set of transformed biometric data of the user is stored at a biometric data verification node that does not have access to the feature transformation key. The method comprises generating random data, computing at least one new feature transformation key based on said random data, replacing the at least one stored feature transformation key with the computed at least one new feature transformation key, and transmitting the generated random data to the biometric data verification node, which uses the generated random data to update the at least one set of transformed biometric data.

Abstract: Methods and devices for updating biometric template protection keys can include updating at least one stored feature transformation key with which a set of biometric data of a user initially has been transformed at a first client device at which the biometric data of the user was captured and enrolled with a network node, which set of transformed biometric data of the user is stored at a biometric data verification node that does not have access to the feature transformation key. The method comprises generating random data, computing at least one new feature transformation key based on said random data, replacing the at least one stored feature transformation key with the computed at least one new feature transformation key, and transmitting the generated random data to the biometric data verification node, which uses the generated random data to update the at least one set of transformed biometric data.

Abstract: A method performed by a client device of enrolling biometric data of a user with a network node over a secure communication channel comprises capturing the biometric data, transforming the biometric data into a first set of transformed biometric data using a first feature transformation key, generating a second feature transformation key, and transforming the biometric data into a second set of transformed biometric data using the second feature transformation key. The method further comprises encrypting the first and second set of transformed biometric data with an encryption key, encrypting the second feature transformation key with another encryption key shared with the network node at which the first and second sets of transformed biometric data are to be enrolled, and submitting, to the network node, an enrolment request comprising the encrypted first and second sets of transformed biometric data, the encrypted second feature transformation key, and user profile data.

Abstract: A method performed by a client device of enrolling biometric data of a user with a network node over a secure communication channel comprises capturing the biometric data, transforming the biometric data into a first set of transformed biometric data using a first feature transformation key, generating a second feature transformation key, and transforming the biometric data into a second set of transformed biometric data using the second feature transformation key. The method further comprises encrypting the first and second set of transformed biometric data with an encryption key, encrypting the second feature transformation key with another encryption key shared with the network node at which the first and second sets of transformed biometric data are to be enrolled, and submitting, to the network node, an enrolment request comprising the encrypted first and second sets of transformed biometric data, the encrypted second feature transformation key, and user profile data.

Abstract: A method performed by a client device of enrolling biometric data of a user with a network node over a secure communication channel comprises capturing the biometric data, transforming the biometric data into a first set of transformed biometric data using a first feature transformation key, generating a second feature transformation key, and transforming the biometric data into a second set of transformed biometric data using the second feature transformation key. The method further comprises encrypting the first and second set of transformed biometric data with an encryption key, encrypting the second feature transformation key with another encryption key shared with the network node at which the first and second sets of transformed biometric data are to be enrolled, and submitting, to the network node, an enrolment request comprising the encrypted first and second sets of transformed biometric data, the encrypted second feature transformation key, and user profile data.

Abstract: A method performed by a client device of enrolling biometric data of a user with a network node over a secure communication channel comprises capturing the biometric data, transforming the biometric data into a first set of transformed biometric data using a first feature transformation key, generating a second feature transformation key, and transforming the biometric data into a second set of transformed biometric data using the second feature transformation key. The method further comprises encrypting the first and second set of transformed biometric data with an encryption key, encrypting the second feature transformation key with another encryption key shared with the network node at which the first and second sets of transformed biometric data are to be enrolled, and submitting, to the network node, an Enrollment request comprising the encrypted first and second sets of transformed biometric data, the encrypted second feature transformation key, and user profile data.

Abstract: A method for controlling the processing of data in a data processor such that the data processor is connectable to a further device over a data link. The method comprising the steps of receiving data at an element of the data processor and if a set interval has elapsed following the receipt of the data, determining whether processing of the received data in accordance with a data transfer protocol has begun, and, if it has not, triggering such processing of the received data by a protocol processing element. The method then senses conditions pertaining to the data link and sets the interval in dependence on the sensed conditions.

Abstract: A method for controlling the processing of data in a data processor such that the data processor is connectable to a further device over a data link. The method comprising the steps of receiving data at an element of the data processor and if a set interval has elapsed following the receipt of the data, determining whether processing of the received data in accordance with a data transfer protocol has begun, and, if it has not, triggering such processing of the received data by a protocol processing element. The method then senses conditions pertaining to the data link and sets the interval in dependence on the sensed conditions.

Abstract: A method for controlling the processing of data in a data processor such that the data processor is connectable to a further device over a data link. The method comprising the steps of receiving data at an element of the data processor and if a set interval has elapsed following the receipt of the data, determining whether processing of the received data in accordance with a data transfer protocol has begun, and, if it has not, triggering such processing of the received data by a protocol processing element. The method then senses conditions pertaining to the data link and sets the interval in dependence on the sensed conditions.

Abstract: An antenna system including: an input port configured to receive tracking mode signals, in two orthogonal polarizations, from a target; a tracking coupler, configured to receive the tracking mode signals from the input port, the tracking coupler including: a first pair of opposed slot couplers configured to extract tracking signals from the tracking mode signals in a first one of the orthogonal polarizations, and a second pair of opposed slot couplers configured to extract tracking signals from the tracking mode signals in a second one of the orthogonal polarizations; and a tracking combiner network configured to combine the extracted tracking signals from the pairs of opposed slot couplers to generate tracking output signals for use in controlling the antenna system to track the target.

Abstract: A deployable photonic link including a deployable length of optical fiber and an interface module fusion spliced to at least one end of the optical fiber so that the module is directly connected to the fiber. The interface module including at least one of: an input for receiving a first electrical signal including a first radio frequency (RF) signal component; and an output for outputting a second RF signal component. The interface module further including, respectively, at least one of: a device for receiving the first electrical signal from the input and for producing an optical signal modulated with the first RF signal component for transmission in the optical fiber; and a device for receiving a modulated optical signal and for producing therefrom the second RF signal component for output at the output. An interface module may also contain both the input and the output and the devices for receiving RF signals and for receiving modulated optical signals.

Abstract: An antenna system including: an input port configured to receive tracking mode signals, in two orthogonal polarisations, from a target; a tracking coupler, configured to receive the tracking mode signals from the input port, the tracking coupler including: a first pair of opposed slot couplers configured to extract tracking signals from the tracking mode signals in a first one of the orthogonal polarisations, and a second pair of opposed slot couplers configured to extract tracking signals from the tracking mode signals in a second one of the orthogonal polarisations; and a tracking combiner network configured to combine the extracted tracking signals from the pairs of opposed slot couplers to generate tracking output signals for use in controlling the antenna system to track the target.

Abstract: A method for receiving packet data by means of a data processing system having a plurality of processing cores and supporting a network interface device and a set of at least two software domains, each software domain carrying a plurality of data flows and each supporting at least two delivery channels, the method comprising: receiving at the network interface device packet data that is part of a particular data flow; selecting in dependence on one or more characteristics of the packet data a delivery channel of a particular one of the software domains, said delivery channel being associated with a particular one of the processing cores of the system; and mapping the incoming packet data into said selected delivery channel such that receive processing of the packet is performed by the same processing core that performed receive processing for preceding packets of that data flow.

Abstract: A computer system comprising hardware including a data interface for interfacing between the computer system and a data source; a memory; a first operating system capable of communicating with the hardware; and a second operating system capable of supporting a user-level application and being configured to communicate with the hardware via the first operating system, the second operating system being capable of allocating a region of the memory for use as a buffer by such a user-level application. The data interface is configurable to associate a predetermined data format with a region of the memory that has been allocated for use as a buffer by a user-level application supported by the second operating system and to, on receiving from the data source a data message of that format, automatically store data of that message in that region of the memory without it passing via the first or second operating systems.

Abstract: A network interface device for providing an interface between a network and a data processing device, the network interface device having: a plurality of resources of different types for supporting the interface, and a bus interface for interfacing with the data processing device by means of a bus over which data can be sent by addressing to a address on the bus, the network interface device being arranged so that each resource may be addressed by a respective address on the bus.

Abstract: A deployable photonic link including a deployable length of optical fiber and an interface module fusion spliced to at least one end of the optical fiber so that the module is directly connected to the fiber. The interface module including at least one of: an input for receiving a first electrical signal including a first radio frequency (RF) signal component; and an output for outputting a second RF signal component. The interface module further including, respectively, at least one of: a device for receiving the first electrical signal from the input and for producing an optical signal modulated with the first RF signal component for transmission in the optical fiber; and a device for receiving a modulated optical signal and for producing therefrom the second RF signal component for output at the output. An interface module may also contain both the input and the output and the devices for receiving RF signals and for receiving modulated optical signals.