Qualcomm Incorporated

Srinivas Pullakavi

Dileep Marchya

Balamukund Sripada

Prashant Nukala

Padmanabhan Komanduru V

Sudeep Ravi Kottilingal

Dhaval Kanubhai Patel

Kalyan Thota

Mahesh Aia

Nagamalleswararao Ganji

Sushil Chauhan

Padmanabhan Komanduru, V

Mohammed Naseer Ahmed

Aspects presented herein relate to methods and devices for display processing including an apparatus, e.g., a CPU. The apparatus may perform a partial frame update for a first frame at a first update time, where the partial frame update corresponds to an update of less than all content in the first frame, where the partial frame update for the first frame is associated with a panel ROI of the first frame. The apparatus may also calculate a margin time period between the first update time and a subsequent Vsync time. Further, the apparatus may transmit, based on the margin time period, a first indication of a subsequent frame transfer interrupt time. The apparatus may also transmit, to a DPU, a second indication to transfer the set of second frames at a reduced DPU clock frequency and a reduced bandwidth frequency starting at the subsequent frame transfer interrupt time.

Display processing unit pixel rate based on display region of interest geometry

Aspects of the disclosure are directed to implementing adaptive variable refresh (AVR) wherein a graphics processing unit (GPU) is configured to generate a display content; a display processing unit (DPU) coupled to the graphics processing unit (GPU), wherein the DPU is configured to provide an adaptive variable refresh (AVR) feature; and a display panel coupled to the DPU, wherein the display panel is configured to display the display content.

Adaptive synchronization for fluid display refresh rate changes

The present disclosure relates to methods and apparatus for display processing. The apparatus can determine at least one data parameter corresponding to each of a plurality of layers in a display frame. The apparatus can also calculate a model for the at least one data parameter corresponding to each of the plurality of layers. Additionally, the apparatus can modify the model for the at least one data parameter based on one or more application use cases of the display frame. Moreover, the apparatus can implement the modified model on each of the plurality of layers in the display frame. In some aspects, the apparatus can also determine one or more composition settings for each of the plurality of layers based on the modified model. The apparatus can also apply the one or more composition settings to each of the plurality of layers based on the modified model.

Methods and apparatus for compositor learning models

In some aspects, the present disclosure provides a method for generating a frame. The method includes receiving a first fence indicating that a first frame stored in a display processor unit (DPU) buffer has been consumed by a hardware component. The method also includes in response to receiving the first fence, fetching a plurality of layers from an application buffer, the plurality of layers corresponding to a second frame. The method also includes determining to use both a DPU and a graphics processing unit (GPU) to process the plurality of layers for composition of the second frame. The method also includes fetching the first fence from the DPU buffer and generating a second fence.

Low latency composer

The present disclosure relates to methods and apparatus for display processing. Aspects of the present disclosure can determine a refresh offset for at least one group of lines in a first display based on at least one group of lines in a second display. Aspects of the present disclosure can also apply the refresh offset for the at least one group of lines in the first display based on the at least one group of lines in the second display. Further, aspects of the present disclosure can adjust combined instantaneous bandwidth corresponding to each of the at least one group of lines in the first display and each of the at least one group of lines in the second display based on the applied refresh offset. Aspects of the present disclosure can also determine one or more overlapping layer regions based on the first display and the second display.

Methods and apparatus for refreshing multiple displays

Certain aspects of the present disclosure provide a method for driving a plurality of display panels including a first display panel and a second display panel. The method includes receiving a first synchronization signal from the first display panel. The method further includes receiving a second synchronization signal from the second display panel. The method further includes determining a phase difference between the first synchronization signal and the second synchronization signal. The method further includes computing at least one phase shift offset based on the determined phase difference, the at least one phase shift offset being configured to reduce the phase difference between the first synchronization signal and the second synchronization signal. The method further includes providing a first phase shift offset of the at least one phase shift offset to the first display panel. The method further includes providing a unified synchronization signal to a display processor.

Systems and methods to synchronize display panels

A device may allocate one or more frame buffers. In response to a command to open an application after allocating the one or more frame buffers, the device may reassign one or more of the frame buffers to the application. Furthermore, the device may store, based on instructions of the application, content data in the one or more reassigned frame buffers. The device may output, for display on a display screen, content based on the content data in the one or more reassigned frame buffers.

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Kakinada, India

Srinivas Pullakavi