Arm Limited

Arm IP Limited

University of Michigan

Apical Limited

Daryl Wayne Bradley

Sheldon James Woodhouse

Andrew Brookfield Swaine

John Michael Horley

Richard Roy Grisenthwaite

Edmond John Simon Ashfield

Jason Andrew Blome

Daren Croxford

Thomas Christopher Grocutt

Milosch Meriac

Krisztian Flautner

Hugo John Martin Vincent

Simon Andrew Ford

Alastair David Reid

Scott Mahlke

Amyas Edward Wykes Phillips

David Michael Gilday

George James Milne

Marianne Crowder

Robert Arnold Calico, Iii

A voice assistant device comprises an input to receive data defining an audio command; and processing circuitry to perform an operation defined by the audio command responsive to an activation of the voice assistant device; wherein the activation comprises determining presence of an activation source within an activation region from one or more sensors.

Voice assistant devices

An apparatus comprising an input to receive identifier parameters for one or more identifiers, where the identifiers are displayable at a display device mounted or mountable in a vehicle. The apparatus may comprise a storage device to store identifier parameters for at least one of the one or more identifiers. The apparatus may also comprise a locating module to determine a location parameter relating to the display device. Also the apparatus may comprise a processor to select an identifier for display at the display device based, at least in part, on the stored identifier parameters for one of the one or more identifiers matching the location parameter relating to the display device.

Selection of identifiers

A system for automatically ascertaining the location of wireless functional devices, such as lights and switches, in a building. Information from the devices is generated by receipt of electromagnetic signals from other devices, to calculate a best fit for the relative location of the devices in relation to each other. Preferably a map of the building is adduced to refine the location process, for instance by tying the location of a light switch to a wall or a light to a ceiling. The information is used to ascertain that, for example, two devices are in the same room and can be associated with each other. Account can be taken of variable features of the building such as partition walls, to update device settings. There is thus no need to survey the building manually.

Locating devices

A method of controlling a data processing device, the method comprising: receiving, at the data processing device, a communication from a remote device wherein the communication comprises verification data; verifying the verification data at the data processing device; initiating an action by a watchdog associated with the data processing device based on the verification.

Control mechanisms for data processing devices

A data processing apparatus and methods are disclosed. The data processing apparatus comprises: data processing elements operable to process data; an energy management unit operable to generate energy management information indicative of an energy state of at least one of the data processing elements when processing said data; and logic operable to receive said energy management information and to generate energy management information items associating said energy state with the processing of said data. The information items can provide visibility of how the Energy State of the data processing elements vary in response to the processing of data. Providing this visibility of the Energy State can advantageously enable more detailed the energy management to be performed and the Energy State of the data processing elements to be optimized.

Energy management system configured to generate energy management information indicative of an energy state of processing elements

A data processing apparatus is disclosed, said data processing apparatus comprising a plurality of devices, trace logic associated with at least one of said plurality of devices, and tagging logic associated with at least one of said plurality of devices, said tagging logic being operable to: select at least one item, said at least one item comprising an activity to be monitored; provide said at least one selected item with tag data identifying said at least one item as an item to be monitored; and said trace logic being operable to: detect tagged items processed by said at least one device; and output trace information relating to at least some of said detected tagged items.

Method of tracing selected activities within a data processing system by tagging selected items and tracing the tagged items

A data processing system includes a register file having a plurality of registers storing respective register data values and an associated register value cache having a plurality of storage locations storing corresponding cache data values. There are fewer cache data values than registers. When a register is to be read, both the register data value and, if present, a cache data value from a corresponding storage location within the register value cache are read and compared by a comparator. This generates a match signal which indicates if the data values do not match that one of the data values is in error. The match signal stalls the processing and a CRC code initially stored with the cache data value and recalculated based upon the read cache data value are compared to determine whether or not the cache data value has changed since it was stored. If the cache data value has not changed, then it is correct and is output instead of the register data value. Alternatively, if the cache data value has changed, then the register data value is output.

Error detecting and correcting mechanism for a register file

A data processing system is provided in which processing circuitry performs at least one of a series of data processing operations in dependence upon a set of data values and control circuitry controls execution of the data processing operations. Control path error detection circuitry is provided for detecting a control path error associated with an error in operation of the control circuitry and data path error handling circuitry is arranged to handle recovery from errors in the data values. The control path error detection circuitry is configured to cause the data path error handling circuitry to perform recovery from detected control path errors enabling the series of data processing operations to continue despite the occurrence of the control path error. An associated method and computer program product are also provided.

Recovering from errors in streaming DSP applications

A method of selecting where error detection circuits should be placed within an integrated circuit uses simulation of a reference and test design with errors injected into the test design and then fan out analysis performed upon those injected errors to identify error propagation characteristics. Thus, registers at which propagated errors are highly likely to manifest themselves or which protect key architectural state, or which protect state not otherwise protected can be identified and so an efficient deployment of error detection mechanisms achieved. Within an integrated circuit output signals from inactive circuit elements may be subject to isolation gating in dependence upon a detected current state of the integrated circuit. Thus, inactive circuit elements in which soft errors occur have inappropriate output signals gated from reaching the rest of the integrated circuit and thus reducing erroneous operation.

Insertion of error detection circuits based on error propagation within integrated circuits

Within an integrated circuit () independently controllable domains () may be unable to complete pending transactions taking place between domains. Each domain is provided with a state machine () which is responsive to the state of the state machine within the other domain and when this indicates that the other domain is not communicating triggers modified behavior. This can provide that the predetermined transaction protocol is not broken and/or complete a partially completed transaction when the domain concerned has recovered from an error or other event which disrupted the communication.

Recovering communication transaction control between independent domains of an integrated circuit

A data processing system is provided having a clock signal comparator comprising a reference input port for receiving a reference clock signal and at least a further input port for receiving respective further clock signal. Checking logic is provided within the clock signal comparator to check for a correspondence between the clock edge of the reference clock signal and a corresponding clock edge of the further clock signal within a predetermined time window. The checking logic is operable to check for the correspondence during operation of the data processing system. The clock-signal comparator can be provided on an integrated circuit or as part of the data processing apparatus having at least two different timing domains such as timing domains associated with two different instances of the same clock. Furthermore the clock-signal comparator is implemented in a hardware description language and integrated in a simulation of the operation of a data processing apparatus to detect timing errors that arise from numerical artifacts of the simulation as well as timing errors that arise from configuration and layout of the circuit elements of the data processing apparatus being simulated.

System for checking clock-signal correspondence

A trace data formatterassembles trace data frames. These trace data framesinclude bytes which may either serve to carry a trace data source identifier ID or trace data. A system being traced has multiple trace data sourcesand when the trace data source which is generating the current trace data stream changes then a trace data source identifier ID is inserted within the trace data stream.

Trace data source identification within a trace data stream

A trace data system is provided in which flush request signals are generated and passed to trace data sources to trigger them to output any buffered trace data they are storing which was generated prior to the flush request being signalled. When the trace data has been flushed from these trace data sources, they signal this by generating a flush complete signal. The flushing of trace data may advantageously be performed prior to a power-down operation and using a trace bus bridge.

Recovering pending trace data within a data processing system

Within an integrated circuitindependently controllable domainsmay be unable to complete pending transactions taking place between domains. Each domain is provided with a transaction level state machinewhich is responsive to the state of the state machine within the other domain and when this indicates that the other domain is not capable of communicating triggers default behavior ensuring that the predetermined transaction protocol is not broken.

Communication transaction control between independent domains of an integrated circuit

An integrated circuitis provided with multiple sourcesof trace data streams that are input via respective dedicated trace busesto a trace data stream combiner. The trace data bus has trace data signal lines ATDATA for carrying trace data signals and trace source identifying signal lines ATID for carrying trace source identifying signals. A trace data stream replicatormay be used to replicate a single trace data stream such that the resulting multiple trace data streams may be subject to different post-replication processing/filtering as desired.

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Cambridgeshire, United Kingdom

Daryl Wayne Bradley