Patent ID: 6574421
Filing Date: 2003-06-03
Classification: G11B,H04N

Abstract:
An information medium, comprising:a data area configured to store at least one data object having record information, the data area including a time map information area; 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 marking an arbitrary position in said record information for a user to freely set contents of said at least one data object, and 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, said time map information area is configured to store a time entry information and an object unit entry information associated with said at least one data object, and said time information is converted into an offset address of the at least one data object based on the time entry information and the object unit entry information.