PEN-SHAPED POINTING DEVICE AND SHIFT CONTROL METHOD THEREOF

1 . A shift control method for use with a pen-shaped pointing device and a controlled device, the shift control method comprising steps of:

sensing shift information, tilt angle information and rotating angle information in response to a configuration change of the pointing device relative to a supporting plane;

performing a shift estimation operation by the controlled device according to the shift information, the tilt angle information and the rotating angle information, thereby acquiring a position-compensating data; and

adjusting a moving trajectory of the pointing device displayed by the controlled device according to the position-compensating data if the pointing device is in contact with the supporting plane.

2 . The shift control method according to claim 1 , wherein the configuration change of the pointing device relative to the supporting plane is caused by moving, rotating or rolling the pointing device on the supporting plane.

3 . The shift control method according to claim 1 further comprising steps of:

providing a reference basis associated with the controlled device;

providing a dynamic operating basis associated with the pointing device; and

adjusting the moving trajectory of the pointing device relative to the reference basis according to the dynamic operating basis and the position-compensating data.

4 . The shift control method according to claim 3 wherein the dynamic operating basis of the pointing device is adjusted according to the configuration change of the pointing device relative to the supporting plane.

5 . The shift control method according to claim 1 further comprising steps of:

assigning an identification code to the pointing device;

acquiring the identification code by the controlled device when the controlled device is in communication with the pointing device; and

adjusting the moving trajectory of the pointing device displayed by the controlled device according to the identification code and the position-compensating data.

6 . The shift control method according to claim 1 , wherein the shift information, the tilt angle information and the rotating angle information are provided by an optical shift sensor, a track ball shift sensor, an acceleration sensor, a gyroscope, an e-compass or a geomagnetic sensor.

7 . A pen-shaped pointing device in communication with a controlled device, comprising:

a pen-shaped body; and

a sensing unit disposed in the pen-shaped body for detecting shift information, tilt angle information and rotating angle information in response to a configuration change of the pointing device relative to a supporting plane, wherein the controlled device performs a shift estimation operation according to the shift information, the tilt angle information and the rotating angle information to acquire a position-compensating data, wherein if the pointing device is in contact with the supporting plane, the controlled device adjusts a moving trajectory of the pointing device displayed by a controlled device according to the position-compensating data.

8 . The pen-shaped pointing device according to claim 7 , wherein the configuration change of the pointing device relative to the supporting plane is caused by moving, rotating or rolling the pointing device on the supporting plane.

9 . The pen-shaped pointing device according to claim 8 , wherein the controlled device is associated with a reference basis, and the pointing device is associated with a dynamic operating basis, wherein in response to the configuration change of the pointing device relative to the supporting plane, the moving trajectory of the pointing device relative to the reference basis is adjusted according to the dynamic operating basis and the position-compensating data.

10 . The pen-shaped pointing device according to claim 7 , wherein the pen-shaped pointing device further comprises a transmitting unit in communication with the controlled device for transmitting the shift information, the tilt angle information and the rotating angle information to the controlled device.

11 . The pen-shaped pointing device according to claim 10 , wherein an identification code is assigned to the pointing device and transmitted to the controlled device through the transmitting unit, wherein the moving trajectory of the pointing device displayed by the controlled device is adjusted according to the identification code and the position-compensating data.

12 . The pen-shaped pointing device according to claim 7 wherein the sensing unit is an optical shift sensor, a track ball shift sensor, an acceleration sensor, a gyroscope, an e-compass or a geomagnetic sensor.

13 . A shift control system, comprising:

at least one pointing device comprising a casing and a sensing unit, wherein the sensing unit is disposed inside the casing for detecting shift information, tilt angle information and rotating angle information in response to a configuration change of the pointing device relative to a supporting plane; and

a controlled device in communication with the at least one pointing device for performing a shift estimation operation according to the shift information, the tilt angle information and the rotating angle information to acquire a position-compensating data, wherein if the pointing device is in contact with the supporting plane, the controlled device adjusts a moving trajectory of the pointing device displayed by a controlled device according to the position-compensating data.

14 . The shift control system according to claim 13 , wherein the sensing unit is an optical shift sensor, a track ball shift sensor, an acceleration sensor, a gyroscope, an e-compass or a geomagnetic sensor.