Patent ID: RE43810

Claim:
A method for controlling a display mode in a portable computer, comprising: storing information of a changed display mode when the display mode of a display is changed in response to a user's request; and setting the display mode to an arbitrary display mode corresponding to the stored changed display mode information when at least one of a system power supply of the portable computer is enabled or a system mode is changed, wherein the setting the display mode to an arbitrary display mode comprises, determining whether the display mode can be changed, wherein the display mode is variable in at least one system mode, and setting the display mode of the display to the arbitrary display mode corresponding to the stored changed display mode information when the display mode can be changed as a result of the determination, wherein the setting the display mode of the display comprises, setting the display mode according to a default display mode information of the system when the display mode cannot be changed as the result of the determination, and wherein the system mode includes one of notebook mode and tablet mode, wherein said each system mode is supported by a separate operating system.