File management device and method thereof, and audio visual data recording/reproducing device and method thereof
First Claim
Patent Images
1. A file management device for managing a file in a randomly accessible recording medium, comprising:
- storage means for storing file management information composed of file entry information including an identification name for identifying the file and a reference number indicative of the number of other files referring to the file, and record entry information having information for specifying a recording area, wherein the file comprises data continuously recorded in each of a plurality of recording areas dispersedly located on the recording medium and the storage means is operable to increment and decrement the reference number; and
control means for controlling the storage means to store the file management information and for controlling reproduction of a data file containing audio visual data stored in the recording medium on the basis of the file entry information and the record entry information stored in the storage means.
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Abstract
A recording medium is logically divided to form a cluster. Each cluster records AV (Audio Visual) data. A reference number indicates the number of files which reference AV data. A free space byte map having the reference number is used for determining whether to enable or disable deletion of AV data on a cluster basis. That is, a cluster having the reference number 0 is released as a free area, thus facilitating management of a file and realizing effective use of a recording medium.
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Citations
24 Claims
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1. A file management device for managing a file in a randomly accessible recording medium, comprising:
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storage means for storing file management information composed of file entry information including an identification name for identifying the file and a reference number indicative of the number of other files referring to the file, and record entry information having information for specifying a recording area, wherein the file comprises data continuously recorded in each of a plurality of recording areas dispersedly located on the recording medium and the storage means is operable to increment and decrement the reference number; and
control means for controlling the storage means to store the file management information and for controlling reproduction of a data file containing audio visual data stored in the recording medium on the basis of the file entry information and the record entry information stored in the storage means. - View Dependent Claims (2)
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3. A file management device for managing a file in a randomly accessible recording medium, comprising:
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storage means for storing file management information composed of file entry information including an identification name for identifying the file and a reference number indicative of the number of other files referring to the file, and record entry information having information for specifying a recording area, wherein the file comprises data continuously recorded in each of a plurality of recording areas dispersedly located on the recording medium; and
control means for controlling the storage means to store the file management information and for controlling reproduction of a data file containing audio visual data stored in the recording medium on the basis of the file entry information and the record entry information stored in the storage means, wherein the control means controls the storage means so that editing information indicating a start position and an end position of the recording area in the file allows to store file management information of the editing information and increment and store a reference number for the file entry information. - View Dependent Claims (4, 5, 6)
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7. A file management method for managing files on a randomly accessible recording medium, comprising:
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a first step of allowing storage means to store file management information comprising file entry information containing an identification name for identifying a file and a reference number indicating the number of other files referencing the file and record entry information for specifying a recording area, wherein the file comprises data continuously recorded in each of a plurality of recording areas dispersedly located on the recording medium and the storage means is operable to increment and decrement the reference number; and
a second step of reproducing a data file containing audio visual data recorded on the recording medium on the basis of the file management information stored at the first step. - View Dependent Claims (8)
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9. A file management method for managing files on a randomly accessible recording medium, comprising:
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a first step of allowing storage means to store file management information comprising file entry information containing an identification name for identifying a file and a reference number indicating the number of other files referencing the file and record entry information for specifying a recording area, wherein the file comprises data continuously recorded in each of a plurality of recording areas dispersedly located on the recording medium;
a second step of reproducing a data file containing audio visual data recorded on the recording medium on the basis of the file management information stored at the first step; and
a third step of allowing the storage means to store file management information for editing information and increment and store a reference number for the file entry information of the file when editing information indicating a start position and an end position of the recording area for the file is input. - View Dependent Claims (10, 11, 12)
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13. An audio visual data recording/reproducing device comprising a randomly accessible recording medium, recording/reproducing means for recording or reproducing data containing audio visual data as a file from the recording medium, and a plurality of input/output means for outputting externally input data to the recording/reproducing means by making an access within a time slot allocated to the recording/reproducing means and inputting the data output from the recording/reproducing means, the device comprising:
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storage means for storing file management information comprising file entry information containing an identification name for identifying the file and a reference number indicating the number of other files referencing the file and record entry information for specifying a recording area, wherein the file comprises data continuously recorded in each of a plurality of recording areas dispersedly located on the recording medium and the storage means is operable to increment and decrement the reference number; and
control means for controlling the storage means to store the file management information in the storage means when the recording/reproducing means records the file on the recording medium and for controlling the recording/reproducing means to reproduce the data from the recording medium based on the file management information. - View Dependent Claims (14)
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15. An audio visual data recording/reproducing device comprising a randomly accessible recording medium, recording/reproducing means for recording or reproducing data containing audio visual data as a file from the recording medium, and a plurality of input/output means for outputting externally input data to the recording/reproducing means by making an access within a time slot allocated to the recording/reproducing means and inputting the data output from the recording/reproducing means, the device comprising:
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storage means for storing file management information comprising file entry information containing an identification name for identifying the file and a reference number indicating the number of other files referencing the file and record entry information for specifying a recording area, wherein the file comprises data continuously recorded in each of a plurality of recording areas dispersedly located on the recording medium; and
control means for controlling the storage means to store the file management information in the storage means when the recording/reproducing means records the file on the recording medium and for controlling the recording/reproducing means to reproduce the data from the recording medium based on the file management information, wherein the storage means is controlled so that the storage means stores file management information for editing information, and increments and stores a reference number for the file entry information of the file when editing information indicating a start position and an end position on the recording area for the file is input. - View Dependent Claims (16, 17, 18)
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19. An audio visual data recording/reproducing method for recording/reproducing means which records and reproduces data containing audio visual data as a file on a randomly accessible recording medium to output the externally input data by accessing the recording/reproducing means and input the data output from the recording/reproducing means within a time slot period to which a plurality of input/output means is assigned for performing record and reproduction of the data, the method comprising:
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a first step of allowing storage means to store file management information comprising file entry information containing an identification name for identifying the file and a reference number indicating the number of other files referencing the file and record entry information for specifying a recording area, wherein the file comprises data continuously recorded in each of a plurality of recording areas dispersedly located on the recording medium and the storage means is operable to increment and decrement the reference number; and
a second step for allowing the recording/reproducing means to reproduce the data recorded on the recording medium on the basis of the file management information stored by the storage means at the first step. - View Dependent Claims (20)
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21. An audio visual data recording/reproducing method for recording/reproducing means which records and reproduces data containing audio visual data as a file on a randomly accessible recording medium to output the externally input data by accessing the recording/reproducing means and input the data output from the recording/reproducing means within a time slot period to which a plurality of input/output means is assigned for performing record and reproduction of the data, the method comprising:
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a first step of allowing storage means to store file management information comprising file entry information containing an identification name for identifying the file and a reference number indicating the number of other files referencing the file and record entry information for specifying a recording area, wherein the file comprises data continuously recorded in each of a plurality of recording areas dispersedly located on the recording medium; and
a second step for allowing the recording/reproducing means to reproduce the data recorded on the recording medium on the basis of the file management information stored by the storage means at the first step; and
a third step of allowing the storage means to store the file management information for editing information, and increment and store a reference number for the file entry information when editing information indicating a start position and an end position on the recording area for the file is input. - View Dependent Claims (22, 23, 24)
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Specification