Interactive pointing device capable of switching capture ranges and method for switching capture ranges

An interactive pointing device capable of switching capture ranges, comprising:

• an image capturing element, for capturing an optical signal from an external light source, and outputting an image signal from the optical signal;
• and
• a processing unit, for receiving a switching signal,
• wherein when the switching signal is in a first mode, the processing unit calculates a first coordinate data based on the image signal from the optical signal, and when the switching signal is in a second mode, the processing unit calculates a second coordinate data based on the image signal from the optical signal, wherein the optical signal is obtained by the image capturing element with a first sensing angle when the switching signal is in the first mode and is obtained by the image capturing element with a second sensing angle when the switching signal is in the second mode.

A method for switching capture ranges for use in an interactive pointing device, comprising:

• providing an image capturing element and a processing unit;
• receiving a switching signal, and determining whether the switching signal is in a first mode or a second mode;
• capturing an optical signal with a first sensing angle from an external light source by using the image capturing element when the switching signal is in the first mode;
• capturing the optical signal with a second sensing angle from the external light source by using the image capturing element when the switching signal is in the second mode;
• converting the optical signal into an image signal;
• and
• when the switching signal is in the first mode, outputting a first coordinate data by the processing unit according to the image signal, and when the switching signal is in the second mode, outputting a second coordinate data by the processing unit according to the image signal.

An interactive pointing device, comprising:

• an image capturing element, capable of operating in a capture range for capturing an optical signal from an external light source, and outputting an image signal from the optical signal;
• and
• a processing unit, for responding to a switching signal,
• wherein when the switching signal is in a first mode, the processing unit controls the image capturing element to capture the optical signal with the capture range and calculates a first coordinate data based on the image signal from the optical signal, and when the switching signal is in a second mode, the processing unit controls the image capturing element to capture the optical signal with the capture range and calculates a second coordinate data based on the image signal from the optical signal, wherein the capture range for capturing the optical signal is corresponding to a first sensing angle when the switching signal is in the first mode, and the capture range for capturing the optical signal is corresponding to a second sensing angle when the switching signal is in the second mode.