Patent ID: 8836637

Claim:
An electronic device, comprising: a housing; electronic circuitry contained within said housing; an orientation sensor coupled to said electronic circuitry, for detecting an orientation of said housing; a button mounted on a first side of said housing and having a symbol engraved thereon, the symbol representing a default function; and a screen mounted on a second side of said housing, the second side being opposite the first side, wherein said electronic circuitry is operative (i) to dynamically display on said screen at different times, each of two different user interface control elements at a screen location that is substantially opposite the location of said button, each user interface control element having a device command associated therewith, and (ii) to adapt the device so that a press of said button invokes the device command associated with that control elements that is currently being displayed on the second side opposite said button, wherein the respective device commands associated with the different user interface control elements relate to different modes of operation of the device, and wherein a button-only interface, for which a press of said button activates said button's default function regardless of the displayed user interface control element, is enabled when said orientation sensor detects an orientation of said housing wherein said screen is facing down and said button is facing up.