Method and apparatus for activating a hardware feature of an electronic device

1. An electronic device comprising:

a first camera located on a first side of the electronic device at a first height above a bottom of the electronic device the bottom being a short edge of the electronic device;

a second camera located on a second side of the electronic device at a second height above the bottom of the electronic device, wherein the second height is different than the first height;

a first sensor configured to detect a motion of the electronic device;

a second sensor configured to measure an orientation of the electronic device; and

a processing element operationally coupled to the first and second sensors and the first and second cameras, wherein the processing element is configured to:

detect a predetermined pattern of directional movement of the electronic device;

measure, in response to detecting the predetermined pattern, the orientation of the device relative to a gravitational direction, wherein the orientation is quantified by an orientation angle between the gravitational direction and a reference line pointing from a first location of the first camera to a second location of the second camera and

electronically select and activate one of the first camera or the second camera based on the orientation angle of the electronic device measured relative to the gravitational direction and relative height between the first camera and the second camera with respect to the gravitational direction in response to detecting the predetermined pattern.

2. The electronic device of claim 1 , wherein the first sensor comprises:

a gyroscope, and

wherein the predetermined pattern is rotational motion resulting from twisting the electronic device, and comprising a reversal of direction and an angular jerk above a threshold value.

3. The electronic device of claim 1 , wherein:

the second sensor comprises an accelerometer that measures the orientation of the electronic device relative to the gravitational direction, and

wherein the processing element is configured to:

select the first camera instead of the second camera when the orientation angle is less than a threshold angle; and

select the second camera instead of the first camera when the orientation angle is greater than the threshold angle.

4. A method performed by an electronic device for activating hardware features of the electronic device, the method comprising:

detecting a predetermined pattern of directional movement of the electronic device, the electronic device comprising a plurality of selectable hardware features;

measuring, in response to detecting the predetermined pattern, an orientation of the electronic device relative to a gravitational direction, wherein the orientation is quantified by an orientation angle between the gravitational direction and a reference line pointing from a first location of a first selectable hardware feature of the plurality of selectable hardware features to a second location of a second selectable hardware feature of the plurality of selectable hardware features, wherein the first location is at a different height than the second location from a short edge of the electronic device; and

activating one of the first selectable hardware feature or the second selectable hardware feature based on the measured orientation angle of the electronic device with respect to the gravitational direction and relative height between the first selectable hardware feature and the second selectable hardware feature with respect to the gravitational direction in response to detecting the predetermined pattern.

5. The method of claim 4 , wherein the predetermined pattern of the electronic device is a twisting motion of the electronic device about a rotation axis passing through the electronic device, wherein the twisting motion comprises at least one of:

a forward rotation and a backward rotation about the rotation axis; or

an angular jerk about the rotation axis greater than a predetermined threshold.

6. The method of claim 4 , wherein

the orientation of the electronic device is measured relative to a gravitational direction using an accelerometer of the electronic device, and

the first selectable hardware feature is activated if the orientation angle is less than a threshold angle; and

the second selectable hardware feature is activated if the orientation angle is greater than the threshold angle.

7. The method of claim 6 , wherein the first selectable hardware feature is a first camera on a first side of the electronic device and the second selectable hardware feature is a second camera on a second side of the electronic device opposite the first side.