Portable device interaction via motion sensitive controller

1. A method for wireless interaction with a portable device, the method comprising:

establishing a communications link between the portable device and a stand defined to support the portable device, wherein a location of the portable device determines an interactivity zone that is approximately in front of the portable device;

establishing an interface between the portable device and a controller to receive inputs from a user via the controller to generate actions associated with game objects in a game to be executed by the portable device;

tracking, by the stand, a spatial position of a controller;

detecting by the stand that the controller is outside predefined boundaries near an edge of the interactivity zone;

moving the stand, in response to the detecting, to move the portable device so that interactivity zone is repositioned approximately in front of the portable device; and

communicating to the portable device via the communications link the moving of the stand.

2. The method as recited in claim 1 , wherein the controller is a wireless controller, wherein interfacing the portable device with the controller further includes:

capturing an image of the interactivity zone;

receiving inertial movement information from the wireless controller; and

analyzing the captured image and the inertial movement information to determine motion of the wireless controller.

3. The method as recited in claim 1 , further including:

sending a request, from the portable device to the stand, to move the stand.

4. The method as recited in claim 1 , further including determining the interactivity zone, the determining comprising:

identifying a current location of the controller;

estimating a range of motion of the controller; and

establishing the interactivity zone to cover at least the range of motion.

5. The method as recited in claim 4 , further including:

identifying additional controllers; and

re-determining the interactivity zone to cover the controller and the additional controllers.

6. The method as recited in claim 1 , further including:

tracking static markers in the interactivity zone to identify motion of the portable device.

7. The method as recited in claim 1 , wherein moving the stand further includes:

selection a motion to be performed by the stand, the motion selected from a group consisting of a movement in an x, y, or z direction, a yaw movement, a pitch movement, or a roll movement.

8. The method as recited in claim 1 , further including:

providing video, audio or tactile feedback when the controller moves outside the interactivity zone.

9. The method as recited in claim 1 , further including:

measuring a depth within the interactivity zone of the controller, wherein the generated actions associated with game objects are geared according to the depth.

10. The method as recited in claim 1 , further including:

detecting a change in location of the stand, the change in location not being caused by the stand or the portable device; and

updating the location of the interactivity zone after detecting the change in location of the stand.

11. A stand for wireless interaction between a portable device and a controller, the stand defined for holding the portable device, the stand comprising:

a camera for capturing image data;

an input device detection module that tracks a location and movement of the controller based on the image data, the input device detection module being defined to determine an interactivity zone that is approximately in front of the portable device where motion of the controller is tracked, wherein the portable device is defined to establish an interface with the controller to receive inputs from a user via the controller to generate actions associated with game objects in a game to be executed by the portable device;

a stand motion module for moving the stand when the controller is outside predefined boundaries near an edge of the interactivity zone; and

a communications module for transferring stand movement information to the portable device.

12. The stand as recited in claim 11 , wherein the communications module transmits the image data to remote devices during network game play.

13. The stand as recited in claim 11 , wherein the input device detection module detects a player's face near the controller to determine the interactivity zone.

14. The stand as recited in claim 11 , further including:

a depth camera to measure a distance between the depth camera and the controller.

15. The stand as recited in claim 11 , wherein the portable device updates a location of the interactivity zone based on the stand movement information.

16. A computer program embedded in a non-transitory computer-readable storage medium, when executed by one or more processors, for wireless interaction with a portable device, the computer program comprising:

programs instructions for establishing a communications link between the portable device and a stand defined to support the portable device, wherein a location of the portable device determines an interactivity zone that is approximately in front of the portable device;

programs instructions for establishing an interface between the portable device and a controller to receive inputs from a user via the controller to generate actions associated with game objects in a game to be executed by the portable device;

programs instructions for tracking, by the stand, a spatial position of a controller;

programs instructions for detecting by the stand that the controller is outside predefined boundaries near an edge of the interactivity zone;

programs instructions for moving the stand, in response to the detecting, to move the portable device so that interactivity zone is repositioned approximately in front of the portable device; and

programs instructions for communicating to the portable device via the communications link the moving of the stand.

17. The computer program as recited in claim 16 , further including:

program instructions for identifying a static mark in the interactivity zone; and

program instructions for identifying motion of the portable device when a location of the static mark changes.

18. The computer program as recited in claim 16 , wherein the program instructions for tracking the motion of the controller further include:

program instructions for receiving inertial data from the controller regarding movement of the controller.

19. The computer program as recited in claim 16 , wherein the portable device includes a display for showing 3D images viewable by a player wearing 3D glasses.

20. The computer program as recited in claim 16 , further including:

program instructions for tracking the motion of additional controllers within the interactivity zone; and

program instructions for adjusting the interactivity zone when the controller or one of the additional controllers is outside the interactivity zone.