Patent ID: 8374595

Claim:
A handheld electronic device, comprising: a body, having a first side and a second side opposite to each other; a control module, disposed in the body; only two sound outputting modules, including a first sound outputting module disposed on the first side of the body and coupled to the control module, and a second sound outputting module disposed on the second side of the body and coupled to the control module; only two sound receiving module, including a first sound receiving module disposed on the second side of the body and coupled to the control module, and a second sound receiving module disposed on the first side of the body and coupled to the control module; and a motion detecting module, disposed in the body and coupled to the control module, wherein when the motion detecting module detects that the body is located at a first orientation and that the handheld electronic device is in a first operation mode, the first sound outputting module and the first sound receiving module are enabled by the control module, and the second sound outputting module and the second receiving module are disabled by the control module; when the motion detecting module detects that the body is located at a second orientation and that the handheld electronic device is in a second operation mode, the second sound outputting module and the second sound receiving module are enabled by the control module, and the first sound outputting module and the first sound receiving module are disabled by the control module; and when the motion detecting module detects that the body is oriented to a third orientation and that the handheld electronic device is in a third operation mode to perform an audio-visual playing function, a major axis direction of the body is substantially parallel with a horizontal plane, both of the first sound outputting module and the second sound outputting module are enabled by the control module, and both of the first sound receiving module and the second sound receiving module are disabled by the control module.