Abstract: A computing device including a touch sensitive screen to display a graphical representation of a user interface and a processor module configured to control the graphical representation in response to signals representing user interaction. The user interface includes an orbital touch control to move in angular and radial directions relative to a reference point in response to signals representing user interaction with the orbital touch control. The processor module further can generate, in response to the signals representing the user interaction with the orbital touch control, control signals controlling parameters associated with data received at the computing device. The control signals include an indication of a value of a first parameter dependent on an angular position of the orbital touch control relative to the reference point and a value of a second parameter dependent on a radial position of the orbital touch control relative to the reference point.

Abstract: A computing device including a touch sensitive screen to display a graphical representation of a user interface and a processor module configured to control the graphical representation in response to signals representing user interaction. The user interface includes an orbital touch control to move in angular and radial directions relative to a reference point in response to signals representing user interaction with the orbital touch control. The processor module further can generate, in response to the signals representing the user interaction with the orbital touch control, control signals controlling parameters associated with data received at the computing device. The control signals include an indication of a value of a first parameter dependent on an angular position of the orbital touch control relative to the reference point and a value of a second parameter dependent on a radial position of the orbital touch control relative to the reference point.

Abstract: A data processing system comprises a plurality of electronic book reader devices, each of the electronic book reader devices having a display and being connectable to a wireless network of electronic book reader devices, in which: a first electronic book reader device of the plurality comprises a data transmitter configured to send, via the wireless network, reading position data defining: a current book data file being displayed by that electronic book reader device, and a current display position within that book data file; and at least a second, different, electronic book reader device of the plurality comprises a data receiver configured to receive, via the wireless network, the reading position data sent by the first electronic book reader device, and a display controller configured to control the second electronic book reader device to display at least an indication of the current book data file and the current display position of the first electronic book reader device.

Abstract: A data processing system comprises a plurality of electronic book reader devices, each of the electronic book reader devices having a display and being connectable to a wireless network of electronic book reader devices, in which: a first electronic book reader device of the plurality comprises a data transmitter configured to send, via the wireless network, reading position data defining: a current book data file being displayed by that electronic book reader device, and a current display position within that book data file; and at least a second, different, electronic book reader device of the plurality comprises a data receiver configured to receive, via the wireless network, the reading position data sent by the first electronic book reader device, and a display controller configured to control the second electronic book reader device to display at least an indication of the current book data file and the current display position of the first electronic book reader device.