Key control system and method

Abstract

A key control system disposed in a display apparatus includes a hierarchical menu, a power key, and a key module. The hierarchical menu includes a first layer menu and a second layer menu. The first layer menu has an item corresponding to the second layer menu. The power key is adapted to turn on the power supply of the display apparatus. The key control system is used to execute a key control method includes steps of defining the function of the power key as opening the first layer menu of the hierarchical menu after the power supply is turned on; defining the function of the key module as selecting the item of the first layer menu when the first layer menu is opened; and defining the function of the power key as opening the second layer menu after the item of the first layer menu is selected.

Dependencies are inferred from the claim text.