摘要:
A recording apparatus and a record medium for recording the data read time, seek time, continuous reproduction time, continuous record length, and inter-data relation. A recording apparatus for recording data on writable record medium comrpises a data encoding means, a conversion means for converting the data structure of the encoded data from the encoding means, and a recording means for recording the conversion data on the record medium. The file structure has first data units, second data units as sets of the first data units, and a data area for describing management information. The second data units are made to correspond to the continuous record length of when they are recorded on the record medium, and the time length and data length of each second data units recorded in a continuous record length is accommodated in the data area.
摘要:
A data recording method, a data recorder, and a recording medium for re-creating a management file for managing time-series data even if the management file comes to be involved with a problem. The data recorder comprises a first means for creating a first management file used for managing time-series data at predetermined time intervals and recording it on a recording medium sequentially, a second means for creating a second management file containing data on the position and size of the area of the recording medium where all the first management files are recorded and recording the second management file on the recording medium, a third means for creating a third management file for managing all the time-series data and recording the third management file on the recording medium, and a fourth means for re-creating the third management file from the second management file if the third management file is not present or cannot be read.
摘要:
A recording apparatus, a recording method, a recording medium, and an electronic camera for generating an index file (IF) containing file index information divided into a fixed data length portion and a variable data length portion, and recording the index file on a recording medium. The recording apparatus includes generation means for generating an IF containing a plurality of areas where a unique identifier is assigned and recording means for recording the IF onto a recording medium. The generation means divides the file attribute information into first attribute information of fixed data length and second attribute information of variable data length, correlates a plurality of first attribute information items concerning a plurality of files to each of the plurality of files, correlates a plurality of second attribute information items concerning the plurality of the first attribute information items to each of the plurality of the first attribute information items, stores them in a plurality of areas, collects the areas of fixed data length as a first area group and the areas of variable data length as a second area group, which groups are contained in the IF.
摘要:
Entry property (2) contained in entry properties distinguishes normal and system from each other. The “normal” means real data entry while the “system” means an entry having description of a definition of a flag. The flag indicates file attribute information. The flag is defined by an apparatus or by a user. Entry property (3) distinguishes valid and invalid from each other for the entry. Entry property (4) indicates whether the file registered in the entry references another file. A referred counter indicates the number of files referencing the file. A referring file list indicates a reference origin when the file is referenced by another file. These information items enable description of reference relationship between the files.
摘要:
A reproducer for reproducing video data including tracks in the range of reproduction capability. A reproducer (10) for reproducing data from a record medium having tracks on which image data and one or more pieces of edit data are recorded comprises input means (11) for reading data from record medium, analyzing means (12) for identifying the type of recording track on which input data is recorded, storage means (13) for storing priority list in which the type of a track is related to the decoding order and a predetermined threshold for determining upper to what number is reproduced, a plurality of decoding means (15, 16, 17) for decoding data, and judging means (14) for determining whether or not input data is to be decoded from the type of the track from the analyzing means (12) and from the priority list and the predetermined threshold stored in the storage means (13) and outputting, if the input data is determined to be decoded, the data to the decoding means (15, 16, 17) depending on the type of the data.
摘要:
A recording apparatus comprises conversion means (15, 18, 19) for converting data structure of data and recording means (23, 24, 32, 33) for recording the data on a recording medium, so as to have a file structure that can be handled by software. The file structure has a first data unit as actual data, a second data unit which is a set of a plurality of first data units, and a data portion for describing management information for managing the relationship between a plurality of first data units and the attribute of actual data of the first data units. The data portion contains protection information for protecting the intangible property right of the data.