Motion determination apparatus and method thereof
The motion determination apparatus includes a motion sensor for sensing motion of an electronic device and sending out a motion parameter. A processor receives the motion parameter to determine whether or not his motion is a meaningful motion. A device controller activates a device function according to the determination.
1. A motion determination apparatus installed in an electronic device, the apparatus comprising:
a motion sensor to detect the motion of the electronic device and generate a plurality of motion parameter values corresponding to detect points respectively;
a processor for receiving the motion parameter values to generate a first curve and a second curve, wherein the first curve is formed by connecting a plurality of first average values of detected points, and each first average value is generated by averaging the motion parameter values of a first number of detected points detected prior to each detected point, and the second curve is formed by connecting a plurality of second average values of detected points, and each second average value is generated by averaging the motion parameter values of a second number of detected points detected prior to each detected point, and based on a relationship between the first curve and the second curve to trigger a control instruction; and
a controller for receiving the instruction to perform a corresponding function.
2. The apparatus of claim 1 , wherein when the first curve and the second curve are separated, the control instruction is triggered.
3. The apparatus of claim 1 , wherein when the first curve and the second curve are separated and a separated distance between the first curve and the second curve is larger than a threshold value, the control instruction is triggered.
4. The apparatus of claim 1 , wherein when the first curve and the second curve are overlapped or intersected, the control instruction is not triggered.
5. The apparatus of claim 1 , wherein the first number is 80 and the second number is 210.
6. The apparatus of claim 1 , wherein a ratio of the second number to the first number is about 1.2 to 5.
7. The apparatus of claim 1 , wherein a ratio of the second number to the first number is about 1.5 to 2.7.
8. The apparatus of claim 1 , further comprising a user interface to adjust the first number and the second number.
9. The apparatus of claim 1 , wherein the motion sensor is a 2-axle accelerator, a 3-axle accelerator, a compass or an inclinometer.
10. The apparatus of claim 1 , wherein the motion parameter value is related to an inclination of the electronic device.
11. The display control apparatus of claim 1 , wherein the electronic device is a PDA, a cell phone or a notebook.
12. A method for determining a motion of an electronic device, the method comprising:
(a) detecting the electronic device to send a plurality of motion parameter values of detected points sequentially;
(b) generating a first curve, wherein the first curve is formed by connecting a plurality of first average values of detected points, and each first average value is generated by averaging the motion parameter values of a first number of detected points detected prior to each detected point;
(c) generating a second curve, wherein the second curve is formed by connecting a plurality of second average values of detected points, and each second average value is generated by averaging the motion parameter values of a second number of detected points detected prior to each detected point;
(d) calculating the separation distance between the first curve and the second curve;
(e) comparing the separation distance with a threshold value; and
(f) triggering a corresponding function when the separated distance is larger than the threshold value.
13. The method of claim 12 , wherein the step (f) further comprises performing step (a) when the first curve and the second curve are overlapped.
14. The method of claim 12 , wherein the step (e) further comprises performing step (a) when the separated distance is less than the threshold value.
15. The method of claim 12 , wherein the first number is 80 and the second number is 210.
16. The method of claim 12 , wherein a ratio of the second number to the first number is about 1.2 to 5.
17. The method of claim 12 , wherein a ratio of the second number to the first number is about 1.5 to 2.7.
18. The method of claim 12 , further comprising adjusting the first number and the second number.
19. The method of claim 12 , wherein the motion parameter values are detected by a 2-axle accelerator, a 3-axle accelerator, a compass or an inclinometer.
20. The method of claim 12 , wherein the motion parameter value is related to the inclination of the electronic device.
21. The method of claim 12 , wherein the electronic device is a PDA, a cell phone or a notebook.