Patent ID: 8723101

Claim:
An integrated key, the integrated key comprising: a housing which has an accommodation space inside that has an upper portion that is open; an operation member having a guide unit which sticks to the housing between an upper end and a lower end of the operation member while a handle is formed in an upper side and a reflection unit is formed at a bottom surface, wherein one or more semicircle motifs are each formed within a portion of diagonally opposing quadrants and intersecting at a circumference an axis of the reflection unit at least two points on the same axis; and an optical sensor configured to sense an up and down movement of the operation member through a separation distance measurement, sense rotation of the reflection unit of the operation member, determine a location coordinate value of the operation member, and output a sensing signal according to the measurement; and a supporting member enabling the up and down movement of the operation member while wrapping the guide unit of the operation member, wherein the operation member is configured to be moved freely a certain distance inside of an accommodation space of the supporting member in the vertical and horizontal directions based on a certain distance allowed by the guide unit.