Management of reproduction duration of information data
AssigneeCanon Kabushiki Kaisha
InventorTakuya Kotani
Life of this patent
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Abstract
A reproducing apparatus comprises a reproducing unit that reproduces a plurality of information data (media data which include movie data, still image data, and audio data), and management information, which contains duration information indicating reproduction durations of the information data, from a recording medium, and a control unit that controls a reproduction operation of the information data by the reproducing unit on the basis of the duration information reproduced by the reproducing unit, and reproduction control information (a play list) indicating a reproduction sequence of the plurality of information data.
Claims14
A recording apparatus comprising:
- a management file processing unit that generates a management file associated with an information file containing information data;
- a recording unit that records a plurality of said information files and the management file associated with the information files on a recording medium;
- and
- a control information processing unit that generates reproduction control information indicating a reoroduction sequence of the plurality of information data recorded on the recording medium,
- wherein said management file includes link count information indicating a number of pieces of the reproduction control information which designate respective information data recorded on the recording medium, and deletion information indicating that an information data designated by the reproduction control information has been deleted from the recording medium, and
- wherein said management file processing unit changes a value of the link count information in correspondence with a change in reproduction sequence of the reproduction control information and determines, based on a value of the link count information of information data corresponding to a deletion instruction, whether or not the deletion information is to be appended to the management file.
Dependencies are inferred from the claim text.