Quasi analog knob control method and appartus using the same

A quasi analog knob control apparatus for controlling a function status of a display device by imitating the rotation of an analog knob, the control apparatus comprising:

• at least two reference points for generating light of a predetermined spectrum and defining a predetermined area;
• an image sensor for pointing inside the predetermined area and receiving the light of the predetermined spectrum to form a digital image;
• and
• a processing unit for receiving the digital image and identifying image positions of the reference points on the digital image;
• wherein the rotation of the analog knob is imitated by rotating the image sensor during capturing images and a rotation angle of the image sensor is calculated according to the image positions of the reference points on the digital image identified by the processing unit whereby controlling the function status of the display device accordingly.

A screen remote control apparatus, comprising:

• a screen whose function status can be controlled by imitating the rotation of an analog knob;
• at least two reference points for generating light of a predetermined spectrum and defining a predetermined area;
• and
• a remote controller, comprising:
• an image sensor for pointing inside the predetermined area and receiving the light of the predetermined spectrum to form a digital image;
• and
• a processing unit receiving the digital image and identifying image positions of the reference points on the digital image;
• wherein the rotation of the analog knob is imitated by rotating the remote controller and a rotation angle of the remote controller is calculated according to the image positions of the reference points on the digital image identified by the processing unit whereby controlling the function status of the screen accordingly.