Arm Limited

Michal Bogusz

Piotr Chrobak

Damian Piotr Modrzyk

Quinn Carter

Damian Modrzyk

Tomasz Jan Pabis

Daren Croxford

Dominic Hugo Symes

Andrew Brookfield Swaine

Erik Persson

Sharjeel Saeed

Viacheslav Chesnokov

Sven Ola Johannes Hugosson

Thomas James Cooksey

Alex Kornienko

Ozgur Ozkurt

Brian Paul Starkey

Kushan Vijaykumar Vyas

Michal Golek

Pawel Duc

Ertunc Erdil

When a producer processing unit, such as a video decoder, of a media processing system is producing a data output for use by a consumer processing unit, such as a display processor, the producer processing unit also generates metadata for the data output that it is producing and provides that metadata for use by the consumer processing unit. The consumer processing unit then uses the metadata provided by the producer processing unit when processing the data output to which the metadata relates.

Media processing systems

An apparatus for providing a foreground frame to be composited with a background frame in a chroma-keying arrangement, each of the foreground frame and the background frame comprising one or more regions that together form the respective frame. A detection module determines whether each frame region has a predetermined colour value and generates and stores chroma keying information based on the determination. Control circuitry then controls image processing to be performed on the region according to the stored chroma keying information.

Method of and apparatus for processing frames in a data processing system

A data processing system includes a scaleroperable to scale a received input data array to provide a scaled output version of the input data array. When it is desired to produce a de-interlaced and scaled output version of an input data array, the input data arrayis provided to the scaler, and the scalerscales the input data arrayso as to simultaneously de-interlace and scale the input data array and to produce a de-interlaced and scaled output version of the input data array.

De-interlacing data arrays in data processing systems

A method of operating a data processing systemis disclosed that comprises producing data in the form of blocks of data, where each block of data represents a particular region of a data array, processing the data using a processing operation in which one or more output data values are each determined using data values from plural different lines of the data array, storing the processed data in a memoryof the data processing system, and reading the data from the memoryin the form of lines.

Data processing systems

A display controller for a data processing system includes a memory read sub-system operable to read data of input surfaces to be used as input layers to be processed by the display controller. The memory read sub-system is operable to request in advance the loading of memory address translation data into a memory address translation data cache for memory pages storing data relating to an input surface. The memory read sub-system selects the memory pages that it requests the advance loading of address translation data for based on information relating to the data for the input surface that will be required by the display controller to generate the output surface, such as the vertical and horizontal size of the input layer that the input surface will be used for, an indication of any flipping or rotation of the input surface, etc.

Prefetching page access data for input surfaces requiring processing

In a display controller of a data processing system, when composing two or more input surfaces to generate a composited surface comprising the two or more input surfaces, data indicating a border between different input surfaces in the composited surface is associated with the composited surface. The data indicative of the border between two input surfaces in the composited surface is then used to control subsequent processing, such as compression and/or filtering, of the composited surface.

Display controllers

A device comprises a content-processing component operable to perform a content-processing operation. The device comprises a sensor operable to output data indicative of activity of an eyelid of a user of the device. The device comprises a processor configured to process the data output by the sensor, to cause the content-processing operation to be in an enabled state in response to the processing of the data output by the sensor indicating that the eyelid is open by more than an open-eyelid threshold, and to cause the content-processing operation to be in a disabled state in response to the processing of the data output by the sensor indicating that the eyelid is closed by more than a closed-eyelid threshold.

Devices and headsets

In a data processing system, an input data array to be downscaled is split into plural parts along its horizontal extent and the different parts of the input data array are then provided to respective scalers of the data processing system and are respectively downscaled by those scalers to provide a plurality of downscaled output parts. The plural downscaled output parts are then combined (merged) to provide the desired downscaled output data array.

A display controller comprises an input stageoperable to read at least one input surface, a composition stageoperable to compose plural input surfaces to generate a composited output surface, an output stageoperable to provide the composited output surface to a display for display, a scaling engineoperable to scale a composited output surface generated by the composition stageand a write-out stageoperable to write a composited and/or scaled output surface to external memory.

Display controller

In a display controller, output surface data from a composition processing stageis received by and stored in a local latency hiding bufferof a memory write subsystembefore being written out to an external memory. The local bufferof the memory write subsystemsignals when it is 'full', and in response thereto the inputting of output surface data to the local bufferis stopped until the current line of the output surface has been finished, and then started again when the next line of the output surface begins. The writing of any data for the line of the output surface that was being written to the local bufferthat is already present in the local bufferand not yet written to the external memory is also skipped, and it is recorded that the output surface line in question is not properly stored in the external memory.

Method of and apparatus for controlling overrun when writing data from a display controller to memory

An apparatus, system, and method for address translation are provided. Physical address information corresponding to virtual addresses is prefetched and stored, where at least some sequences of the virtual addresses are in a predefined order. The physical address information is prefetched based on identification information provided by a data processing activity, comprising at least a segment identifier and a portion of a virtual address to be translated. The storage has segments of entries, wherein each segment stores physical address information which corresponds to virtual addresses in a predefined order. This predefined order means that it is not necessary to store virtual addresses in the storage. Storage capacity and response speed are therefore gained.

Apparatus and method for performing address translation

A scaling apparatus for scaling data arrays, such as images, comprises first horizontal scaling stage circuitry operable to scale a data array input to the scaling apparatus in the horizontal direction, one or more line memories for storing horizontal lines for a data array, wherein the or each line memory is for storing a horizontal line of data for the data array, vertical scaling stage circuitry operable to read data stored in the one or more line memories and to scale the read data in the vertical direction, and second horizontal scaling stage circuitry operable to scale a data array in the horizontal direction.

Growing community of inventors

Cambridge, United Kingdom

Michal Bogusz