Patent ID: 8189859

Claim:
An apparatus for inserting a watermark comprising: a watermark pattern image receiving unit that stores a watermark pattern image corresponding to a preset binary value; a watermark information generation unit that stores watermark information including binary tracking information generated based on a user ID value or a terminal ID value; and a watermark insertion unit that receives watermark pattern images corresponding to bit values of the stored watermark information from the watermark pattern image generation unit, and overlays the watermark pattern images in sequence on a display screen, wherein the watermark information generation unit generates the watermark information by matching a location information value indicating a location of a bit value of the binary tracking information with the bit value of the binary tracking information, and wherein the watermark information generation unit generates the watermark information by partitioning the tracking information, adding a group number for identifying the partitioned tracking information between the partitioned tracking information, and matching the location information value with a bit value of the tracking information to which the group number is added.