Patent ID: 7277625

Claim:
A data recording method comprising the steps of: recording user data which includes data representative of a plurality of still pictures including a number of intra-frame (I) pictures, predictively coded (P) pictures, and bidirectionally coded (B) pictures onto a data recording medium in sector units each having a number of packets, in which each packet includes a packet header and respective data; and recording subcode information for data reproduction in each of said sectors separately from said user data, in which said subcode information includes a sector number for identifying a respective sector and one other item selected from a set including a predetermined time code, entry point information indicative of a position or positions at which the data representative of only an I picture or pictures is located for use in a high-speed search operation and temporal reference information which indicates an order for displaying the pictures and which enables access to a desired still picture selected by a user from among the plurality of still pictures.