Display apparatus and display system

A display system using a plurality of displays to display a given image, the display system connecting, via a communication network, with a terminal management system managing terminal position information that indicates a position of each of the plurality of display apparatuses, the display system comprising:

• a first server configured to detect a positional relationship of plurality of displays;
• and
• a second server configured to cause the plurality of displays to display parts of a given image, respectively, based on the positional relationship detected by the first server, wherein at least one of the plurality of displays includes
• a position detector configured to detect terminal position of other display apparatuses with respect to the display apparatus and information identifying the other display apparatuses;
• a receiver configured to receive, from the terminal management system, at predetermined time intervals, a request for acquiring the terminal position information;
• a transmitter configured to, when having received the request, transmit the terminal position information detected by the position detector to the terminal management system;
• and
• a display configured to display a part of a given image based on terminal position information detected by the position detector, wherein the position detector has a sensor provided at each respective one of left, right, bottom and top sides of the display apparatus, the sensor having adjacent sending and receiving parts;
• and wherein either:
• each sensor has an identification code indicative of identification of the display apparatus and a camera configured to take images of the identification code of one of the other display apparatuses as its sending and receiving parts, the code being adjacent the camera along the respective side of the display apparatus;
• or
• each sensor has an IC tag having identification information of the display apparatus and an IC tag reader configured to acquire identification information from the IC tag of one of the other display apparatuses as its sending and receiving parts, the IC tag being adjacent the IC tag reader along the respective side of the display apparatus;
• or
• each sensor has a light emitting device configured to transmit identification information of the display apparatus and a light receiving device configured to receive identification information of one of the other display apparatuses as its sending and receiving parts, the light emitting device being adjacent the light receiving device along the respective side of the display apparatus;
• wherein:
• the sending and receiving parts of the sensor on a left side of the display are arranged at upper and lower positions in the sensor, respectively;
• the sending and receiving parts of the sensor on a right side of the display unit are arranged at lower and upper positions in the sensor, respectively;
• the sending and receiving parts of the sensor on a bottom side of the display are arranged at right and left positions in the sensor, respectively;
• and
• the sending and receiving parts of the sensor on a top side of the display are arranged at left and right positions in the sensor, respectively.