Blackberry Corporation

Research in Motion Corporation

Aaron Bradley Small

David James Mak-Fan

Thomas Charles Nagy

Alexander Glaznev

A system and method are provided that can be used for applying a deblocking filter to a video according to processor usage, in particular on a mobile device. To determine which of a plurality of deblocking filters to use, the system determines an environment indicator indicative of current processor usage, compares the environment indicator to a primary threshold, wherein the primary threshold is indicative of a maximum acceptable processor usage. If the primary threshold is met, the system foregoes any deblocking filtering. If however the primary threshold is not met, the environment indicator is compared to one or more secondary thresholds and a respective one of the plurality of deblocking filters is applied to the video according to which one of the secondary thresholds is met. Each of the plurality of deblocking filters has a different complexity and thus can be chosen to suit the current system environment.

System and method for providing dynamic deblocking filtering on a mobile device

A processor and method are provided for decoding a multimedia file having video and audio data streams that are configured to be played in synchronization. Frames of the video stream are decoded and played with the audio and, to compensate for saturation of the processor usage, two procedures are performed. The first procedure operates at a first periodic interval and slows down the frame rate to reduce processor usage if needed. The second procedure first attempts to speed up the video to catch up to the audio if they are out of sync and if this cannot be done in the next time interval, the decoding of a select number of frames is skipped such that the video and audio data streams are resynchronized.

System and method for providing a variable frame rate and adaptive frame skipping on a mobile device

A system and method for controlling processor usage according to user related tasks is provided. For periodic tasks, by increasing the period at which the task runs, the average processor usage can be reduced to meet a particular target which can ensure that user input is not affected by the periodic task. As such, the periodic task can be intelligently degraded and altered to compensate for such degradation in order to free up enough processor usage space so as to not adversely affect user input.

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Ottawa, Canada

Aaron Bradley Small