Displaylink (uk) Limited

Displaylink Limited

Richard Akester

Eric Kenneth Hamaker

Patrick David Cooper

Douglas Morse

Colin Skinner

Timothy Mark Edmonds

A method for compressing display data is disclosed. The method comprises performing a wavelet transformation to obtain a general approximation coefficient and a plurality of detail coefficients for a group of pixels; determining whether to prioritise transmission of the general approximation coefficient over transmission of the detail coefficients based on whether there are sufficient resources available to enable a corresponding image frame to be ready for display and/or based on a time since the detail coefficients for a corresponding group of pixels were previously transmitted. If it is determined that transmission of the general approximation coefficient is to be prioritised over transmission of the detail coefficients, the method comprises either: transmitting only the general approximation coefficient, or compressing at least one detail coefficient so as to be more compressed than the general approximation coefficient and transmitting the general approximation coefficient and the at least one compressed detail coefficient.

Processing display data for transmission

A method implemented in a Virtual or Augmented Reality (VR/AR) system having a display device () associated with a user () and a central control device () involves capturing a video feed from a camera () associated with the user () or the display device (), the video feed recording changes in the position of the user () in a physical space, compressing the video feed from the camera (), and transmitting the compressed video feed to the central control device () to enable the central control device () to determine movement of the user () within the physical space.

Transmission of a reverse video feed

A method for compositing display data at a remote device to form an image for display involves the remote device receiving (S) elements of the image, where the image includes display data forming a background layer, display elements forming a foreground layers and an overlay data layer. The remote device receives (S) sensor information indicating one or more of a position of an eye of a viewer, a direction of focus of the eye of the viewer, and/or a position of a display. It then determines (S) movement of a line of sight between the eye of the viewer and the display, determines an estimate of a future position of the line of sight at a future time based on the determined movement of the line of sight, and determines (S) an adjustment to be made to the image based on the future position of the line of sight. The display elements of the foreground layer are composited (S) relative to the display data of the background layer according to the determined adjustment and the composited image is forwarded (S) for display at the future time.

Compositing an image for display

Display Data Processing A display system for displaying display data includes a host device a plurality of display control devices and a plurality of display devices at least two of the display devices having different characteristics. Depending on the available bandwidth and the required processing operations (e.g. rendering), the host device determines a subset of the processing steps that are to be performed by the display control devices instead by the host itself, so has to reduce the required data transmission bandwidth between the host and the displays.

Display data processing

A method of determining which of at least two connected mobile devices is to function as a host device, wherein the mobile devices first determine which of them is to act as an initial host device and which is to act as an initial peripheral device. The initial host device then receives instructions from a user as to which of the mobile devices is to be the host device. If the instructions indicate that the initial host device is to be the host device, the initial host device controls, as host device, the initial peripheral device as a peripheral device, and if the instructions indicate that the initial peripheral device is to be the host device, the initial host device passes control to the initial peripheral device to enable the initial peripheral device to control, as host device, the initial host device as a peripheral device.

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Cambridge, United Kingdom

Richard Akester