Patent ID: 8665366

Claim:
A TV wall system capable of displaying images according to a positioning signal, the TV wall system comprising: a video source for providing a video signal; and at least one row of display devices coupled to the video source, the at least one row of display devices comprising a plurality of display devices coupled to each other in a cascaded manner, each of the display devices comprising: a positioning module for generating a positioning signal, the positioning module comprising a first resistor and a second resistor, a first end of the first resistor being coupled to a first end of a first DC voltage source, a second end of the first resistor being coupled to a second end of the first DC voltage source, a first end of the second resistor being coupled to a first end of a second DC voltage source, a second end of the second resistor being coupled to a second end of the second DC voltage source; a sensing unit coupled to the positioning module for sensing the positioning signal generated by the positioning module, the sensing unit comprising a first sensing element and a second sensing element, the first sensing element being coupled between the first end of the first resistor and a first end of a first resistor of an adjacent positioning module in a same row for sensing a first current flowing through the first sensing element, the second sensing element being coupled between the first end of the second resistor and a first end of a second resistor of an adjacent positioning module in a same column for sensing a second current flowing through the second sensing element; and a display control unit for controlling the display device to display images according to the video signal and the positioning signal sensed by the sensing unit, the first current flowing through the first sensing element, and the second current flowing through the second sensing element.