Patent ID: 6556774
Filing Date: 2003-04-29
Classification: G11B,H04N

Abstract:
An information medium, comprising:a data area configured to store at least one data object having record information; and a management area configured to store management information for managing said at least one data object, and in which said management information includes program chain information configured to specify a manner of presentation of said at least one data object, wherein, said program chain information includes at least one piece of cell information, said cell information has an entry point information area configured to describe entry point information of at least one entry point, each entry point being associated with a program and marking an arbitrary position in said record information for a user to freely set contents of said at least one data object, the entry point information area including: a first area configured to store a type information corresponding to the at least one entry point, a second area configured to store a time information indicating a presentation time of the at least one entry point, wherein the time information is based on a system time clock and is stored when a user creates the at least one entry point, and a third area configured to store a primary text information corresponding to the at least one entry point, the primary text information containing text information, and the type information indicates whether the third area exists, and the first area is arranged to be accessed before the second area.