Electronic device and method with dual mode rear TouchPad

1. A method in a user interface of an electronic device comprising a first touch-sensitive surface including a display on a first side and a second touch-sensitive surface on a second side, the method comprising:

operating the electronic device in a default mode;

receiving a predetermined first touch input while in the default mode;

operating the electronic device in a navigation mode based on the receiving the predetermined first touch input, wherein the navigation mode includes displaying an image on the first touch-sensitive surface including a display and providing an icon for indicating a reference position on the first touch-sensitive surface including a display;

navigating through the image on the first touch-sensitive surface including a display based on a further touch input on the second touch-sensitive surface while in the navigation mode, wherein the navigating includes controlling the position of the icon on the first touch-sensitive surface including a display at a default rate when the further touch input is on the first touch-sensitive surface and controlling the position of the icon at a different rate when the further touch input is on the second touch-sensitive surface; and

disabling the navigation mode on the second touch-sensitive surface and operating the electronic device in the default mode based on a predetermined second touch input.

2. The method of claim 1 , wherein the receiving a predetermined first touch input comprises:

receiving the predetermined first touch input on the second touch-sensitive surface.

3. The method of claim 1 , wherein the disabling includes:

disabling the navigation mode on the second touch-sensitive surface based on the predetermined second touch input on the second touch-sensitive surface.

4. The method of claim 3 , wherein the predetermined second touch input triggers at least one of a hyperlink, a text entry, or an application launch prior to disabling the navigation mode.

5. The method of claim 1 , wherein the disabling includes:

disabling the navigation mode on the second touch-sensitive surface based on the predetermined second touch input on the first touch-sensitive surface.

6. The method of claim 1 , further comprising:

disabling the navigation mode on the second touch-sensitive surface after a predetermined time period of touch inactivity.

7. The method of claim 1 , wherein the navigating further comprises:

highlighting a selectable portion of the image when the icon hovers over the selectable portion of the image.

8. The method of claim 7 , wherein the highlighting includes:

providing at least one of: a color effect, a haptic effect, a text effect, a sound effect, or a different icon shape.

9. The method of claim 1 , wherein the further touch input includes at least one of: a single-finger glide input, a multi-finger glide input, a tap input, or a multiple tap input.

10. The method of claim 1 , wherein the navigating includes:

selecting a selectable portion of the image on the first touch-sensitive surface including a display.

11. The method of claim 10 , wherein the selecting includes:

selecting the selectable portion of the image when the icon hovers over the selectable portion of the image on the first touch-sensitive surface including a display; and

the further touch input includes at least one of: a press-and-hold input or a multiple tap input on the second touch-sensitive surface.

12. The method of claim 10 , further comprising:

removing the icon upon receiving the predetermined second touch input.

13. The method of claim 1 wherein the operating the electronic device in the default mode includes scrolling with respect to the image on the first touch-sensitive surface including a display based on the further touch input on the second touch-sensitive surface.

14. The method of claim 13 , wherein the navigation mode on the second touch-sensitive surface is a panning mode such that the navigating through the image on the first touch-sensitive surface including a display based on the further touch input on the second touch-sensitive surface includes panning the image.

15. The method of claim 13 , wherein the navigation mode on the second touch-sensitive surface is a zoom mode such that the navigating through the image on the first touch-sensitive surface including a display based on the further touch input on the second touch-sensitive surface includes zooming the image.

16. The method of claim 13 , wherein the navigation mode on the second touch-sensitive surface is a cursor positioning mode such that the navigating through the image on the first touch-sensitive surface including a display based on the further touch input on the second touch-sensitive surface includes positioning a cursor on the image.

17. The method of claim 13 , wherein the navigation mode on the second touch-sensitive surface is a selection mode such that the navigating through the image on the first touch-sensitive surface including a display based on the further touch input on the second touch-sensitive surface includes selecting a portion of the image.

18. The method of claim 13 , wherein the navigation mode on the second touch-sensitive surface is an icon mode such that the navigating through the image on the first touch-sensitive surface including a display based on the further touch input on the second touch-sensitive surface includes positioning an icon with relative to the image.

19. An electronic device, comprising:

a housing having a first side and a second side;

a first touch-sensitive surface including a display on the first side;

a second touch-sensitive surface on the second side; and

a controller, coupled to the first touch-sensitive surface including a display and the second touch-sensitive surface, wherein the controller is configured to

operate in a default mode,

operate the electronic device in a navigation mode upon receiving a predetermined first touch input, wherein the navigation mode includes displaying an image on the first touch-sensitive surface including a display and provide an icon for indicating a reference position on the first touch-sensitive surface including a display;

enable a user to navigate through the image on the first touch-sensitive surface based on at least a further touch input, wherein the navigating includes controlling the position of the icon on the first touch-sensitive surface including a display at a default rate when the further touch input is on the first touch-sensitive surface and controlling the position of the icon at a different rate when the further touch input is on the second touch-sensitive surface, and

disable the navigation mode on the second touch-sensitive surface upon receiving a predetermined second touch input.

20. The electronic device of claim 19 , wherein the controller is further configured to disable the navigation mode after a predetermined time period of inactivity.

21. The method of claim 1 , wherein controlling, while in the navigation mode, the position of the icon on the first touch-sensitive surface including a display at a different rate comprises:

controlling the position of the icon at a rate different than a rate of controlling the position of the icon in the default mode.