Patent ID: 8370646

Claim:
A method in a computer system for providing a secure display area on a video display device of a video display system, the video display system having video display memory for storing data to be displayed on the video display device, comprising: reserving a portion of the video display memory for secure data storage that corresponds to the secure display area; receiving a request to display valid data in the secure display area; storing invalid data in the reserved portion of the video display memory until a determined period of time before the data stored in the reserved portion is transferred to the video display device for display, the valid data being an obfuscated form of the valid data; and at the determined period of time, deobfuscating the invalid data stored in the reserved portion of the video display memory wherein the determined period of time corresponds to a time required to deobfuscate the invalid data in the reserved portion of the video display memory and transfer the reserved portion to the video display device.