Patent ID: 8606078

Claim:
An image and sound stream recording method comprising: recording an image and sound stream of a program, and recording management information which manages the image and sound stream, wherein the management information includes: original program information (OPGR) which indicates a whole playback range of the program; playlist information (PGRG) which indicates a playback order of the OPGR; user defined integrated information (UDFF) which includes at least one of the OPGR and the PGRG; a PGRG management table about the PGRG; and a user defined integrated management table about the UDFF; wherein the user defined integrated management table stores thumbnail position information separate from the PGRG management table, for a thumbnail which is representative of a GOP, where the thumbnail position information stored in the user defined integrated management table includes an aggregated collection of: an ALU number which indicates an ALU which includes the GOP represented by the thumbnail, the ALU number being a minimum unit when recording the image and sound stream which have been encoded, an RP number which indicates a RP corresponding to the GOP, and a frame number which indicates a frame displayed as the thumbnail representative of the GOP.