Control device and control method for image display

摘要

A control device for an image display includes at least two reference points, a modulation unit and a remote controller. The modulation unit modulates the light of a predetermined spectrum generated by the reference points with a brightness variation cycle. The modulation unit controls the reference points to emit the light with a first brightness within a first period of the brightness variation cycle and to emit the light with a second brightness within a second period of the brightness variation cycle, wherein the first brightness and the second brightness are not zero gray level. The remote controller captures the light of the predetermined spectrum with a sampling cycle and demodulates an image variation of the reference points with respect to the remote controller. The present invention further provides a control method for an image display.

主权项

1. A control device of an image display, comprising:
at least two reference points configured to generate light of a predetermined spectrum; a modulation unit configured to modulate the light of the predetermined spectrum generated by the reference points with a brightness variation cycle and respectively with different brightness values associated with different reference points; and a remote controller configured to capture the light of the predetermined spectrum with a sampling cycle which is shorter than the brightness variation cycle, and eliminate interferences of ambient light according to the brightness variation cycle and distinguish the different reference points according to the different brightness values associated with each of the reference points in a single sampling of the light of the predetermined spectrum; wherein the different brightness values are not zero gray level.