Systems and methods are configured to adjust the timing of source frame compression in response to fluctuations in a variable frame rate at which source frames are rendered.

A video processing system includes a storage device, a receiving circuit, an audio/video demultiplexing circuit, a video decoder, and a display engine. The storage device includes a data buffer, a bitstream buffer, and a display buffer. An output of the receiving circuit is written into the data buffer. An input of the audio/video demultiplexing circuit is read from the data buffer, and an output of the audio/video demultiplexing circuit is written into the bitstream buffer. An input of the video decoder is read from the bitstream buffer, and an output of the video decoder is written into the display buffer. An input of the display engine is read from the display buffer. Each of the data buffer, the bitstream buffer, and the display buffer is a ring buffer.

An electronic device may include a display panel and an image data source designed to determine a differing region in the image frame by comparing source image data and image data corresponding with a previous image frame. The electronic device may also include a display pipeline between the image data source and the display panel. The display pipeline may include image processing circuitry to convert image data from a source space to a display space and image processing circuitry to spatially process the image data. The display pipeline may determine a crop region by converting the differing region to the display space and determine a partial frame region, based on the image data to be spatially processed, by the image processing circuitry. The display pipeline may also determine and retrieve a fetch region smaller than the image frame by converting the partial frame region to the source space.

This disclosure describes efficient communication of surface texture data between system on a chip (SOC) integrated circuits. An example system includes a first integrated circuit and a second integrated circuit communicatively coupled to the first integrated circuit by a video communication interface. The first integrated generates a superframe in a video frame of the video communication interface for transmission to the second integrated circuit. The superframe includes multiple subframe payloads that carry surface texture data to be updated in the frame and corresponding subframe headers that include parameters of the subframe payloads. The second integrated circuit includes a direct access memory (DMA) controller. The DMA upon receipt of the superframe, writes the surface texture data within each of the subframe payloads directly to an allocated location in memory based on the parameters included in the corresponding one of the subframe headers.

Systems and methods are configured to adjust the timing of source frame compression in response to fluctuations in a variable frame rate at which source frames are rendered.

An approach for providing a user interface having a resolution corresponding to a resolution of a high resolution content is provided. The approach allocates at least one partial frame buffer based on a size and a location of a region on a screen of a display on which a user interface (UI) is displayed. The approach displays the UI based on at least one piece of partial graphic data obtained from the allocated at least one partial frame buffer.

The present disclosure is directed to systems and methods of maintaining source device to sink device synchronization in systems in which the source device enters a Panel Self-Refresh (PSR/PSR2) mode and the sink device enables adaptive synchronization with the source device. To maintain synchronization, in some instances the source device and the sink device may maintain synchronization contemporaneous with at least a portion of the PSR/PSR2 operating mode. To maintain synchronization, in some instances, a high-bandwidth communications link may be maintained between the source device and the sink device. In some instances, synchronization between the source device and the sink device may be interrupted upon the source device entering the PSR/PSR2 operating mode and may be re-established upon the source device exiting the PSR/PSR2 operating mode.

An electronic device that includes a memory and a plane circuit is described. The memory outputs a first alpha data value and a first pixel data value, then outputs a second alpha data value and a second pixel data value, then stores a third pixel data value. The plane circuit outputs a request signal for the third pixel data value, based on whether the first alpha data value and the second alpha data value are equal to a reference value and whether the first pixel data value corresponds to the third pixel data value.

Systems, apparatuses, and methods for implementing a timestamp based display update mechanism. A display control unit includes a timestamp queue for storing timestamps, wherein each timestamp indicates when a corresponding frame configuration set should be fetched from memory. At pre-defined intervals, the display control unit may compare the timestamp of the topmost entry of the timestamp queue to a global timer value. If the timestamp is earlier than the global timer value, the display control unit may pop the timestamp entry and fetch the frame next configuration set from memory. The display control unit may then apply the updates of the frame configuration set to its pixel processing elements. After applying the updates, the display control unit may fetch and process the source pixel data and then drive the pixels of the next frame to the display.

The disclosure relates to a method and an apparatus for updating information. The method includes, in an Always On Display (AOD) mode, determining a target update information format corresponding to a type of a content to be updated, wherein the type of the content to be updated includes time and/or picture, and different update information formats correspond to different types of contents to be updated; generating, based on the content to be updated and the target update information format, update information corresponding to the content to be updated; and controlling a screen to update the content to be updated based on the update information and to display the updated content.