Patent ID: 8059181

Claim:
An apparatus for data transmission/reception, the apparatus comprising: a transmitter for receiving and displaying digital data; a receiver for photographing and receiving the digital data displayed in the transmitter, and restoring corresponding data information by restoring the received digital data; and a data service providing unit for transferring the digital data frame-by-frame to the transmitter, wherein each of the frames of the digital data includes at least one data channel, each of the at least one data channel including corresponding channel information, wherein the transmitter comprises a control unit for creating control signal information from frame information contained in the corresponding frame of the digital data, wherein the control unit creates the control signal information including an intensity calibration signal, a tilt calibration signal, and a synchronizing signal, and stores the control signal information in the corresponding frame at predetermined pixel coordinate positions, respectively, and wherein the digital data is calibrated by the receiver using the control signal information.