Method of providing additional information on each object within image by digital information display device, digital information display device for the same, and visible light communication terminal for receiving additional information

A method of receiving additional information from a display device by a terminal, the method comprising:

• receiving, if the terminal is positioned above a first area of a display of the display device, information for a time slot corresponding to additional information for a first object belonging to the first area from the display device;
• informing a user of the terminal of a reception of the information for the time slot;
• receiving, if the terminal is positioned above a second area different from the first area, additional information for a plurality of objects including the first object, wherein the additional information for the plurality of objects has a frame structure of a time division scheme including data fields on which the additional information for the plurality of objects is carried, and wherein the frame structure includes a preamble for a synchronization operation, a header including information for time slots allocated to the data fields, and at least one data field having the additional information;
• and
• displaying the additional information for the first object corresponding to the received information for the time slot on a display of the terminal;
• wherein the information for the time slot is for identifying the additional information for the first object from among the additional information for the plurality of objects.

A method of providing additional information on each object within an image by a display device, the method comprising:

• transmitting, if a terminal is positioned above a first area of a display, information for a time slot corresponding to additional information for a first object belonging to the first area to the terminal;
• and
• transmitting, if the terminal is positioned above a second area different from the first area, additional information for a plurality of objects including the first object, wherein the additional information for the plurality of objects has a frame structure of a time division scheme including data fields on which the additional information for the plurality of objects is carried, and wherein the frame structure includes a preamble for a synchronization operation, a header including information for time slots allocated to the data fields, and at least one data field having the additional information,
• wherein the information for the time slot is for informing existence of additional information for the first object, and information for identifying the additional information for the first object from among the additional information for the plurality of objects.