Loading patent…
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMiyuki Sasaki, Yoshiho Goto, Yoshihisa Fukushima
Estimating the term…
A lead-out area is recorded and a session is formed each time a file is recorded with the data structure of a disc recorded with the conventional CD-R multi-session method. The latest file structure recorded in the last session is read with a multi-session disc by reading in series the start address of the next session recorded in the lead-in area of each session. This information read in series is dependent upon the number of file write operations, and as the number of writes increases, the slower the latest file structure retrieval process becomes. In a write-once medium in which the file management information and unrecorded area information are update recorded at each recording session, chaining information is recorded at each file write. Furthermore, an area for recording a plurality of continuously recorded chaining information is reserved, and access in the latest chaining information retrieval process is accelerated. Furthermore, address information for an area contiguously reserved for chaining information is recorded in part of the chaining information.
A data storage medium in which a file managed using a volume/file structure is recorded and reproduced from one end of a data recording area, and in which a number of data recording operations to a same area is limited, comprising:
A data recording method for applying a formatting process to a data storage medium in which a file managed using a volume/file structure is recorded and reproduced from one end of a data recording area, and in which a number of data recording operations to a same area is limited, comprising:
A data recording apparatus for applying a formatting process to a data storage medium in which a file managed using a volume/file structure is recorded and reproduced from one end of a data recording area, and in which a number of data recording operations to a same area is limited, comprising:
A data recording method for recording a file to a data storage medium in which a file managed using a volume/file structure is recorded and reproduced from one end of a data recording area, and in which a number of data recording operations to a same area is limited, comprising:
A data recording apparatus for recording a file to a data storage medium in which a file managed using a volume/file structure is recorded and reproduced from one end of a data recording area, and in which a number of data recording operations to a same area is limited, comprising:
A data recording method for applying a closing process, for preventing a performance drop resulting from wrong access to an unrecorded area, to a data storage medium in which a file managed using a volume/file structure is recorded and reproduced from one end of a data recording area, and in which a number of data recording operations to a same area is limited, comprising:
A data recording apparatus for applying a closing process, for preventing a performance drop resulting from wrong access to an unrecorded area, to a data storage medium in which a file managed using a volume/file structure is recorded and reproduced from one end of a data recording area, and in which a number of data recording operations to a same area is limited, comprising:
A data recording method for applying a opening process for beginning recording data to a data storage medium in which a file managed using a volume/file structure is recorded and reproduced from one end of a data recording area, and in which a number of data recording operations to a same area is limited, comprising:
A data recording apparatus for applying a closing process, for preventing a performance drop resulting from wrong access to an unrecorded area, to a data storage medium in which a file managed using a volume/file structure is recorded and reproduced from one end of a data recording area, and in which a number of data recording operations to a same area is limited, comprising:
A data reproducing method for reproducing a file from a data storage medium to which a volume/file structure is recorded by a formatting process and to which a number of data recording operations to a same area is limited, comprising:
A data reproducing apparatus for reproducing a file from a data storage medium to which a volume/file structure is recorded by a formatting process and to which a number of data recording operations to a same area is limited, comprising:
Dependencies are inferred from the claim text.