The invention relates to a method for building television wall, which comprises: layering several televisions into TV wall, while each one has image zoom processor; setting the position parameter and image zoom parameter of each television inside the TV wall; transmitting same TV signal to each television; when each TV digitalizes the received signal, the image zoom processor, based on the image zoom parameter and the resolution of screen, expands the image, and based on the zoom parameter and position parameter, calculates out the shift parameter of present displayed image, based on said shift parameter, shifts it to appointed image area to be output to the screen; different TVs displays the different areas of one image that zoomed at same ration, to be layered to form the TV wall; and the sonic processing circuit in one TV can synchronously process the sonic signal, to output it to the sonic device to be played. Compared with present technique, the invention has lower cost and simple process. |