Method of synchronizing reference image with additional image of real-time broadcasting program, and transceiver system for performing same

A broadcasting transmitting system performing synchronization between a reference image and an additional image of a real-time broadcasting program, the broadcasting transmitting system comprising:

• a transmitting server configured to generate at least one frame including a predetermined identifier for informing a receiver of a start time point of a reference image in advance;
• a reference image encoder configured to encode the reference image in real time;
• and
• an additional image encoder configured to encode the additional image,
• wherein the predetermined identifier includes a pattern for at least one pixel, and
• wherein the at least one frame including the predetermined identifier is stored in the reference image in advance,
• wherein the predetermined identifier includes a most significant bit (MSB) values of a pixel value.

A broadcasting receiver performing synchronization between a reference image and an additional image in a digital broadcasting, the broadcasting receiver comprising:

• a reference image decoder configured to decode the reference image;
• an additional image decoder configured to decode the additional image;
• and
• a synchronization reproducing unit configured to recognize a start time point of the reference image based on a predetermined identifier included in a received frame to control reproduction time points of the reference image and the additional image so that the additional image is reproduced in a state in which the additional image is synchronized with the start time point of the reference image,
• wherein the predetermined identifier includes a pattern for at least one pixel, and
• wherein the at least one frame including the predetermined identifier is stored in the reference image in advance,
• wherein the predetermined identifier includes a most significant bit (MSB) values of a pixel value.