Piezoelectric user interface

A media terminal comprising:

• a radio transmitter and a radio receiver for establishing connections;
• a touch screen keypad;
• at least one piezoelectric element for generating a tactile response to a user of the media terminal when a key in said keypad is pressed, said at least one piezoelectric element is configured to generate vibration which is forwarded to the user via a key when said key is pressed and said media terminal is configured to generate an alerting vibration signal with said at least one piezoelectric element in response to an incoming call;
• wherein said at least one piezoelectric element is configured to contact said touch screen keypad in order to cause at least an upper surface of said touch screen keypad to vibrate when said key on the touch screen keypad is pressed;
• and
• a controller configured to:
• identify a selected key in said keypad pressed by the user,
• check whether the selected key is available as an option or is not available as an option at the moment the selected key was pressed,
• control said at least one piezoelectric element to generate a first kind of vibration which is forwarded to the user of the media terminal via the selected key if said check indicates that the selected key is not available as an option, and
• control said at least one piezoelectric element to generate a second kind of vibration which is forwarded to the user of the media terminal via the selected key if said check indicates that the selected key is available as an option.

A method comprising:

• configuring at least one piezoelectric element to generate a tactile response to a user of a media terminal when a key in a touchscreen keypad is pressed,
• wherein the piezoelectric element is configured to contact the touch screen keypad in order to cause at least an upper surface of the touch screen keypad to vibrate when a key on the touch screen keypad is pressed;
• configuring the media terminal to generate an alerting vibration signal with the at least one piezoelectric element in response to an incoming call;
• identifying a selected key of the keypad pressed by the user;
• checking whether the selected key is available as an option or is not available as an option at the moment the selected key was pressed;
• controlling the piezoelectric element to generate a first kind of vibration which is tactilely forwarded to the user of the media terminal via the selected key if the check indicates that the selected key is not available as an option;
• and
• controlling the piezoelectric element to generate a second kind of vibration which is tactilely forwarded to the user of the media terminal via the pressed key if said check indicates that the pressed key is available as an option.