Patent ID: 6877106

Claim:
An interface method for transferring image data between a host system for executing an application and a display connected to the host system, comprising the steps of: managing image data by the host system, belonging to a window in accordance with a sub-area obtained by dividing a display area of the display, for the window that is a display area in an image space of which the application is conscious; transferring the image data managed by the host system as a packet unit to the display via the interface, wherein the packet unit comprises a header indicating that the packet unit corresponds to the window; developing the image data, transferred to the display via the interface, in a panel memory of the display, and grasping conditions of a transfer error in the transferred image data in a unit of the window; and grasping by the host system the conditions grasped through the display, wherein a re-transfer of the image data from the host system to the display through the interface is executed based on the conditions of the transfer error grasped by the host system, and wherein the re-transfer of the image data is executed for a sub area in which the transfer error is grasped.