Abstract: A method for refreshing a display panel is described. The method includes receiving, at the display panel from post-processing hardware, a look-up table (LUT) based on a histogram of image data and a region of interest (ROI) of the image data. The method also includes applying, at the display panel, the LUT to at least a portion of cached data in panel memory to produce modified data. The method further includes refreshing the display panel based on the modified data.

Abstract: The disclosure relates to a system including a set of subsystems sharing a voltage rail. The system includes a power controller configured to send messages, such as interrupts, to the subsystems concerning a change of state of a supply voltage on the voltage rail. Such messages may have been sent in response to requests and messages from the subsystems, respectively. In response to the messages, the subsystems may send requests to the power controller for different dynamic clock voltage scaling (DCVS) levels, respectively. In response to such requests, the power controller may set the supply voltage and frequencies of clock signals for the requesting subsystems, respectively.

Abstract: A method for refreshing a display panel is described. The method includes receiving, at the display panel from post-processing hardware, a look-up table (LUT) based on a histogram of image data and a region of interest (ROI) of the image data. The method also includes applying, at the display panel, the LUT to at least a portion of cached data in panel memory to produce modified data. The method further includes refreshing the display panel based on the modified data.

Abstract: Methods and apparatus for displaying layers on a display of a computing device are disclosed. The method includes creating layers from graphical data and assigning a priority to each of the layers. The layers are displayed on the display of the computing device, and in a current draw cycle, any layers assigned an urgent priority are updated. In addition, updates are applied to layers near a touch area of the display and updates to other layers ae deferred until a predefined event occurs.

Abstract: The disclosure relates to a system including a set of subsystems sharing a voltage rail. The system includes a power controller configured to send messages, such as interrupts, to the subsystems concerning a change of state of a supply voltage on the voltage rail. Such messages may have been sent in response to requests and messages from the subsystems, respectively. In response to the messages, the subsystems may send requests to the power controller for different dynamic clock voltage scaling (DCVS) levels, respectively. In response to such requests, the power controller may set the supply voltage and frequencies of clock signals for the requesting subsystems, respectively.

Abstract: A method for display mirroring is described. The method includes computing an updating region size for one or more application layers of a screen image, the updating region area regions of interest being updated on the screen image less any overlap between the regions of interest. The method also includes determining that the updating region size plus a previous frame size is less than a frame buffer size. The method further includes determining that there are sufficient resources available to combine the previous frame with the updating region. The method additionally includes generating a current frame by combining the previous frame and the updating region. The method also includes sending the current frame to a mirrored display.