Generating display data

A method of generating display data where a current frame of display data is received, stored and processed from a host and then output for display, sensor data S61 is received and stored indicating movement or position of a moveable display, this data is then sent to the host. A determination is made that the next frame of display data is not ready for output at a required time S62, an estimated next frame of display data is generated S6N1-S6N6 using the stored current frame data and the stored sensor data and output on the display. The receipt of the sensor data occurs before or after receiving, storing, processing or outputting a current frame. The sensor data may be from an accelerometer, gyroscope, triangulation from multiple wireless antennae, a video feed, or from optical elements arranged between the display and a viewer thereof. Estimating the next frame may involve applying a shift which may be constant or variable in position of display data of the current stored frame based on movement of the display as indicated by the sensor data. Warping may also be applied based on optical characteristics of the optical elements between the display and viewer.