Abstract: An apparatus comprising: a processing unit configured to execute a plurality of threads; a profiling unit configured to: profile the operation of the processing unit over a time period to generate an activity profile indicating when each of the plurality of threads is executed by the processing unit over the time period; analyse the generated activity profile to determine whether a signature of the processing unit's thread execution for the time period matches a signature indicating a baseline of thread execution for the processing unit; output an alert signal if the signature of the processing unit's thread execution for the time period does not match the signature indicating a baseline of thread execution for the processing unit.

Abstract: An integrated circuit chip comprising: system circuitry comprising interconnect circuitry for transporting transactions; and monitoring circuitry configured to: monitor transactions from the interconnect circuitry comprising transactions between an entity and a specified region of the integrated circuit chip, the entity being associated with a set of one or more access rights for accessing the specified region of the integrated circuit chip; determine from the monitored transactions values of one or more parameters associated with the access to the specified region by the entity to identify whether the entity has breached its access rights; and perform a dedicated action indicative of a breach of the access rights in response to determining from the parameter values that the entity has breached its access rights.

Abstract: An apparatus comprising: a processing unit configured to execute a plurality of threads; a profiling unit configured to: profile the operation of the processing unit over a time period to generate an activity profile indicating when each of the plurality of threads is executed by the processing unit over the time period; analyse the generated activity profile to determine whether a signature of the processing unit's thread execution for the time period matches a signature indicating a baseline of thread execution for the processing unit; output an alert signal if the signature of the processing unit's thread execution for the time period does not match the signature indicating a baseline of thread execution for the processing unit.

Abstract: An integrated circuit chip comprising: system circuitry comprising interconnect circuitry for transporting transactions; and monitoring circuitry configured to: monitor transactions from the interconnect circuitry comprising transactions between an entity and a specified region of the integrated circuit chip, the entity being associated with a set of one or more access rights for accessing the specified region of the integrated circuit chip; determine from the monitored transactions values of one or more parameters associated with the access to the specified region by the entity to identify whether the entity has breached its access rights; and perform a dedicated action indicative of a breach of the access rights in response to determining from the parameter values that the entity has breached its access rights.

Abstract: Embodiments including a method and apparatus for indexing a video stream are disclosed. In one embodiment, a method for indexing a video stream comprises accessing a video stream comprising a plurality of frames. For each frame, the method determines salient points computes a cross entropy value for each salient point, and sums the cross entropy values to form a frame information number. A sequence of frame information numbers for the plurality of frames in the video streams forms an index value for the video stream.

Abstract: Multibitrate (MBR) live video broadcasting is disclosed in which live video input is copied into a plurality of streams each designated for encoding into a different bitrate. The MBR broadcasting operation is made efficient by performing pre-quantization calculations only the first of the plurality of streams. The results of those calculations are then merely copied to the other streams. Quantization and encoding processes may then be applied to each of the streams to process the streams into their respective, predetermined bitrates.

Abstract: The disclosed embodiments provide methods and apparatus for detecting or announcing presence and/or location information in a wireless communication network. In one aspect, a method for sharing user information in a wireless communication network includes sending an alert from an originator to a target, the alert including information about the originator and requesting information about the target, receiving information by the originator from the target in response to the alert, and updating information in the originator about the target, based on the received information. In another aspect, a method includes sending at least one alert from an originator, requesting information about at least one target user; receiving information by the originator in response to the alert; and updating information by the originator about the target user, based on information received.

Abstract: A LIW processor comprises multiple execution units. The multiple execution units of the processor are divided into groups, and an input instruction word can contain instructions for one execution unit in each of the groups. The processor is optimized for use in signal processing operations, in that the multiple execution units of the processor are divided into groups which do not place significant restrictions on the desirable uses of the processor, because it has been determined that, in signal processing applications, it is not usually necessary for certain execution units to operate simultaneously. These execution units can therefore be grouped together, in such a way that only one of them can operate at a particular time, without significantly impacting on the operation of the device. An array is formed from multiple interconnected processors of this type.

Abstract: Embodiments including a method and apparatus for indexing a video stream are disclosed. In one embodiment, a method for indexing a video stream comprises accessing a video stream comprising a plurality of frames. For each frame, the method determines salient points computes a cross entropy value for each salient point, and sums the cross entropy values to form a frame information number. A sequence of frame information numbers for the plurality of frames in the video streams forms an index value for the video stream.

Abstract: A computer implemented method for matching video data to a database containing a plurality of video fingerprints of the type described above, comprising the steps of calculating at least one fingerprint representing at least one query frame from the video data; indexing into the database using the at least one calculated fingerprint to find a set of candidate fingerprints; applying a score to each of the candidate fingerprints; selecting a subset of candidate fingerprints as proposed frames by rank ordering the candidate fingerprints; and attempting to match at least one fingerprint of at least one proposed frame.

Abstract: A computer implemented method for matching video data to a database containing a plurality of video fingerprints of the type described above, comprising the steps of calculating at least one fingerprint representing at least one query frame from the video data; indexing into the database using the at least one calculated fingerprint to find a set of candidate fingerprints; applying a score to each of the candidate fingerprints; selecting a subset of candidate fingerprints as proposed frames by rank ordering the candidate fingerprints; and attempting to match at least one fingerprint of at least one proposed frame.

Abstract: Multibitrate (MBR) live video broadcasting is disclosed in which live video input is copied into a plurality of streams each designated for encoding into a different bitrate. The MBR broadcasting operation is made efficient by performing pre-quantization calculations only the first of the plurality of streams. The results of those calculations are then merely copied to the other streams. Quantization and encoding processes may then be applied to each of the streams to process the streams into their respective, predetermined bitrates.

Abstract: A computer implemented method computer implemented method for deriving a fingerprint from video data is disclosed, comprising the steps of receiving a plurality of frames from the video data; selecting at least one key frame from the plurality of frames, the at least one key frame being selected from two consecutive frames of the plurality of frames that exhibiting a maximal cumulative difference in at least one spatial feature of the two consecutive frames; detecting at least one 3D spatio-temporal feature within the at least one key frame; and encoding a spatio-temporal fingerprint based on mean luminance of the at least one 3D spatio-temporal feature. The least one spatial feature can be intensity. The at least one 3D spatio-temporal feature can be at least one Maximally Stable Volume (MSV).

Abstract: A computer implemented method computer implemented method for deriving a fingerprint from video data is disclosed, comprising the steps of receiving a plurality of frames from the video data; selecting at least one key frame from the plurality of frames, the at least one key frame being selected from two consecutive frames of the plurality of frames that exhibiting a maximal cumulative difference in at least one spatial feature of the two consecutive frames; detecting at least one 3D spatio-temporal feature within the at least one key frame; and encoding a spatio-temporal fingerprint based on mean luminance of the at least one 3D spatio-temporal feature. The least one spatial feature can be intensity. The at least one 3D spatio-temporal feature can be at least one Maximally Stable Volume (MSV).

Abstract: A data reception unit for receiving a plurality of data streams over a data channel, the data streams being received as amounts of data and each amount of data comprising a data portion including data from a data stream and an identity portion identifying that data stream, the data reception unit comprising: a data stream memory comprising a plurality of data stream storage areas, each for storing data from a respective one of a set of the data streams, and an escape buffer; a first storage information memory for holding first storage information for facilitating storage in the respective data stream storage area of data from the set of the data streams; and a data storage controller for, for each received amount of data, receiving the identity portion of the amount of data and performing a storage operation comprising: accessing the first storage information memory; and if the first storage information memory holds first storage information for the data stream identified by the identity portion, storing the

Abstract: A method of operating a computer system to design an application specific processor (ASP) comprises defining a set of peripherals for the ASP which are responsive to stimuli and which communicate with a processor, generating for each peripheral an input file which defines the functional attributes of that peripheral in a high level language with an input data structure, entering the input file into the computer system and operating a modelling tool loaded on the computer system to generate from the input file a register definition file by allocating specific elements of the input data structure to predefined sectors of a register definition table, and using the register definition file to create in silicon the registers of the ASP.

Abstract: A computer system for simulating an ASP comprises first processor means including execution means for simulating a functional model in a high level language and output means for outputting the state of the functional model at the end of a predetermined simulation phase, means for converting the functional model, including its state at the end of the predetermined simulation phase, into a simulation language for simulating the ASP at circuit level, and second processor means arranged to execute the simulation language to simulate the ASP at circuit level for a subsequent simulation phase.

Abstract: A data reception unit for receiving a plurality of data streams over a data channel. The data streams are received as amounts of data, each amount of data comprising a data portion including data from a data stream and an identity portion identifying that data stream. The data reception unit comprises a data stream memory comprising a plurality of data stream storage areas and a buffer, a first storage information memory for holding first storage information, a processing unit, and a data storage controller. The data storage controller, for each received amount of data, receives the identity portion of the amount of data and performs a storage operation based on the identity portion.

Abstract: A data reception unit for receiving a plurality of data streams over a data channel, the data streams being received as amounts of data and each amount of data comprising a data portion including data from a data stream and an identity portion identifying that data stream, the data reception unit comprising: a data stream memory comprising a plurality of data stream storage areas, each for storing data from a respective one of a set of the data streams, and an escape buffer; a first storage information memory for holding first storage information for facilitating storage in the respective data stream storage area of data from the set of the data streams; and a data storage controller for, for each received amount of data, receiving the identity portion of the amount of data and performing a storage operation comprising: accessing the first storage information memory; and if the first storage information memory holds first storage information for the data stream identified by the identity portion, storing the

Abstract: A data reception unit for receiving a plurality of data streams over a data channel. The data streams are received as amounts of data, each amount of data comprising a data portion including data from a data stream and an identity portion identifying that data stream. The data reception unit comprises a data stream memory comprising a plurality of data stream storage areas and a reserve buffer, a first storage information memory for holding first storage information, a processing unit, and a data storage controller. The data storage controller, for each received amount of data, receives the identity portion of the amount of data and performs a storage operation based on the identity portion.