Patent ID: 8146118

Claim:
A method of reproducing menu data recorded on a computer-readable medium, the method comprising: reading menu management information, a menu data file, and one or more playback units of video data from the computer-readable medium, the menu data file including a plurality of object units for recording thumbnail pictures, each thumbnail picture corresponding to one of the playback units, each thumbnail picture being recorded in one of the object units, the menu management information including size information indicating an actual data size of each thumbnail picture, and at least one thumbnail picture in the menu data file is selected based on a user selection and reproduced based on the menu management information, wherein the selected thumbnail picture includes an intra-coded picture (I-picture) and one or more predictive coded pictures (P-pictures), wherein the selected thumbnail picture is displayed by sequentially transmitting the I-picture and the P-pictures, wherein data recorded between thumbnail pictures is treated as padding data.