A video input interface receives input video data in a normal state. A control input interface receives character data for On Screen Display (OSD) in a setup state. An encoder encodes the character data and stores encoded compressed data in a memory in the setup state. A decoder receives an instruction signal designating the character data to be displayed, reads and decodes one piece of compressed data corresponding to the instruction signal from the memory, and reproduces the original character data in the normal state. A multiplexer superimposes character data on frame data and outputs the data.

The present disclosure relates to a data transmission method, device, system, and display device. The method includes encoding clock training data to obtain two sets of encoded data corresponding to the clock training data and complementary to each other, sending a specified set of encoded data in the two sets of encoded data to a receiving end when positive and negative pins of the transmitting end and the receiving end are correspondingly connected, sending other set of coded data in the two sets of coded data than the specified set of encoded data to the receiving end when the positive and negative pins of the transmitting end and the receiving end are reversely connected. The receiving end may be configured to perform clock training according to the received encoded data.

An apparatus includes a graphics driver circuit and a graphics engine circuit. The graphics engine circuit is configured to determine graphics data to be output to a display and to render the graphics data to a buffer. The graphics driver circuit is configured to output the buffer to the display. The graphics engine circuit is further configured to, while the graphics driver circuit is outputting the first buffer to the display, encode the first graphics data into another buffer, and to signal the graphics driver circuit to output the other buffer to the display.

Systems, methods, and devices implement line-based rendering of graphics. Methods include receiving a command associated with graphical data, the command identifying a plurality of pixel mapping operations to be implemented on a plurality of data objects included in the graphical data. Methods also include determining a plurality of rendering parameters, the plurality of rendering parameters identifying a partitioning of the graphical data into a plurality of portions, and further identifying a pixel mapping operation for each of the plurality of portions. Methods further include generating a plurality of sub-commands based, at least in part, on the plurality of rendering parameters and the command, the plurality of sub-commands identifying a processing operation for each data object included in each of the plurality of portions of the graphical data. Methods also include implementing a processing operation for at least one portion based on at least some of the plurality of sub-commands.

A wearable computing device with bio-signal sensors and a feedback module provides an interactive mediated reality (“VR”) environment for a user. The bio-signal sensors receive bio-signal data (for example, brainwaves) from the user and include bio-signal sensors embedded in a display isolator, having a deformable surface, and having an electrode extendable to contact the user's skin. The wearable computing device further includes a processor to: present content in the VR environment via the feedback module; receive bio-signal data of the user from the bio-signal sensor; process the bio-signal data to determine user states of the user, including brain states, using a user profile; modify a parameter of the content in the VR environment in response to the user states of the user. The user receives feedback indicating the modification of the content via the feedback module.

A page display method for a third-party application, includes: when an electronic device enters a power saving mode, in response to a startup instruction for a third-party application, obtaining a background color and a foreground color in the script of the third-party application; adjusting the background color to a first color, and adjusting the foreground color to a second color, wherein a brightness value of the first color is less than a first brightness threshold, a brightness value of the second color is greater than a second brightness threshold, and the first brightness threshold is less than or equal to the second brightness threshold; rendering a background area of the third-party application with the first color and rendering a foreground area of the third-party application with the second color to obtain a page of the third-party application; and displaying the page of the third-party application obtained by rendering.

A display control system includes a plurality of display devices and a display controller (display device). The display controller generates a graphics command for each frame, and attaches, to the graphics command, time stamp corresponding to an order of generation of the graphics command. Each of the plurality of display devices: acquires the graphics command; performs, in parallel, first processing of acquiring only the time stamp attached to the graphics command in the order of generation and second processing of performing rendering processing based on the graphics command in the order of generation and acquiring the time stamp attached to the graphics command based on which the rendering processing is performed; and when a difference between the time stamp acquired in the first processing and the time stamp acquired in the second processing exceeds a predetermined threshold value, performs reduction processing for reducing a load on the rendering processing.

When rendering a frame, e.g. that is to be used for rendering subsequent frames to be rendered, two versions of the frame are rendered, wherein the first version of the frame is rendered in its entirety but only a portion of the second version of the frame is rendered. The rendered portion of the second version of the frame is compared to a corresponding rendered portion of the first version of the frame. When the comparison determines that the two portions of the two versions match, the frame is, e.g. used for rendering subsequent frames, but when the comparison determines the two portions of the two versions do not match, an error operation is performed.

A display method, a display device, and a display apparatus are provided. The display method includes following steps: obtaining a current frame display period corresponding to a current refresh frequency of a GPU, wherein the current frame display period is a sum of a duration of a frame display and a duration of a vertical blank region; determining a start time and a lasting duration of the vertical blank region based on a preset frame display duration and the current frame display period; and controlling a target image to be displayed from the start time according to the lasting duration.

A display system including a tracking subsystem configured to track one of a pose of a head of a viewer or a pose of an eye of the viewer. The display system further includes an image correction module configured to, for each pixel of at least a subset of pixels of an input image, determine a pixel view angle for the pixel based on the pose of the head or the pose of the eye, determine a corrected pixel value based on an input pixel value of the pixel in the input image and based on the pixel view angle; and provide the corrected pixel value for the pixel in an angle-corrected image corresponding to the input image. The display system further includes a display panel to display the angle-corrected image.