JP2003281851A - Recording and reproducing device, and recording media - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten a file confirmation operating period of time in the case of reproducing data written on a write-once type recording medium. <P>SOLUTION: The recording and reproducing device is provided with; a file structure analysys means for analyzing the file structure of the recording medium in which information are recorded; a file structure analysis information writing means for writing the analysis results of the file structure back to the recording medium as file structure analysis information; and a file structure information reading means for reading the file structure analysis information written back to the recording medium. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus capable of shortening a file confirmation operation time when reproducing data written in a recordable recording medium, and a recording medium used in the apparatus. .

[0002]

2. Description of the Related Art Generally, when reproducing a recording medium having no recording function such as a CD-ROM, the file structure of the recording medium is recognized at high speed by reading TOC data (track management information).

By the way, in recent years, recordable (additionally recordable) discs have rapidly become widespread, but in such discs, users often write files in various formats. For example, it is not rare that one disc contains various files such as music files, image files, document files, and execution files. When such a file is arbitrarily created by the user, TOC data is not created.

Usually, for example, a CD attached to a computer
-When a recording medium is set in the drive such as ROM, the computer goes to read TOC data,
If there is no C data, or if there is TOC data but the necessary information has not been written, the computer must directly analyze the file. Then, for those that have been analyzed, the analysis results (file name; file format name, etc.) are recorded in a predetermined storage area.

That is, basically, when the recording medium is loaded into the drive, the main unit (a device including a processor for reading data such as a computer) reads out all the information of the recording medium, The file structure is analyzed and the result is stored in a built-in memory or the like. This allows the information to be used in subsequent operations.

[0006]

However, with this method, it is necessary to analyze the file structure every time a recording medium is loaded, and as the amount of information that can be recorded on the recording medium increases, it is possible to start recording after the recording medium is loaded. There is a problem that the time until the file can be operated increases.

It is an object of the present invention to shorten the read time of the file structure of the recording medium when reproducing the recordable recording medium, and to shorten the time from turning on the power or enabling reproduction from the recording medium set. And

[0008]

A recording / reproducing apparatus of the present invention comprises a file structure analyzing means for analyzing a file structure of a recording medium on which information is recorded, and an analysis result of the file structure for a file structure on the recording medium. It is characterized by comprising a file structure analysis information writing means for writing back as analysis information and a file structure information reading means for reading the file structure analysis information written back to the recording medium.

A device (control device) for controlling a recording / reproducing device such as a computer can immediately know the file structure information when a recordable recording medium is set. Therefore, until the file can be operated. The time will not increase.

In the recording / reproducing apparatus of the present invention, the file structure analysis result writing means writes the file structure analysis information to an area which is not recognized as a data area, and the file structure information reading means writes the file structure analysis information. It can be configured to read file structure analysis information.

If the file structure information is recorded in the normal data storage area, the file structure information may be erased due to overwriting of the data, and the recorded data may be recorded by the normal reproducing device. Although it may occur that the medium cannot be read, this inconvenience can be avoided by writing the file structure information in an area that is not recognized as a normal data area.

In the recording / reproducing apparatus of the present invention, when the processor in the apparatus reads information on the recording medium, the file structure information reading means reads specific data on the recording medium, and the data is a file on the recording medium. It can have the function of confirming that it matches the structure. As a result, it is possible to avoid a situation in which the file cannot be operated because the data in the recording medium is rewritten after the file structure data is created.

Further, the recording / reproducing apparatus of the present invention can be provided with the read / write function of the write-once optical disc and the magneto-optical disc. Specifically, the recording / reproducing apparatus of the present invention may be connected to a computer or may be incorporated in a portable disc drive apparatus.

Incidentally, some recordable discs usually have an area that is not recognized as a data area. In the present invention, the file structure information can be written using such an area, but a medium having such an area can be specially prepared.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a flow (S101 to S104) from when a recording medium in a normal case is inserted until file operation becomes possible. After inserting the recording medium, it is determined whether the disc is a ROM disc (S101), and R
In the case of an OM disc, TOC data is read and the structure of the recording medium is written in the internal memory (S10).
2).

If it is not a ROM disk, all the information on the recording medium is read (S103), the file structure is analyzed, and the data is written to the internal memory (S1).
04). In this case, when the information stored in the recording medium becomes large or the file structure becomes complicated, it takes time to analyze the file structure.

The present invention solves this problem by writing the file structure data once analyzed into the recording medium itself.

FIG. 2 shows a flow from the insertion of the recording medium according to the present invention to the file operation (S2).
01 to 211) are shown. After inserting the recording medium, it is judged whether it is a ROM disk or not.
The C data is read and the structure of the recording medium is written in the internal memory. If it is not a ROM disc, it is confirmed whether or not the file structure data exists at a fixed location on the recording medium. If it exists, the data is read out and written in the internal memory as file structure data.

However, it is not guaranteed that this data and the file structure of the actual recording medium match. This is because there is a case where the file structure of the recording medium is changed after the file structure data is written on the recording medium.

The present invention compares the fact that the file structure data and the actual structure of the recording medium match as a means to avoid this problem. In order to make the comparison, it is necessary to read out the information on the recording medium. In this case, a part of the information on the recording medium is sampled and compared with the file structure data to increase the speed. The sampling amount for carrying out the comparison should be set by the user. In addition, a setting is provided that allows the comparison itself not to be performed.

When there is no file structure data, the information of the recording medium is analyzed to create the file structure data and the data is written back to the recording medium itself. The user can set whether to write back the file structure data. Also, if the recording medium cannot be recorded, the write back is not performed. In this case, although it takes more time than the conventional method, since the data of the file structure is written in the recording medium itself, it is only necessary to read the file structure data from the second time, so that the speed can be increased.

When a recording medium in which the file structure data is written back is to be reproduced by using a normal reproducing apparatus, there is a possibility that the file structure data interferes with the reproduction. To avoid that problem, the present invention writes the location to write the file structure data after the lead-out of the final session. By doing so, the normal playback device ignores the file structure data and does not affect the playback. Further, by using a dedicated recording medium provided with a recording element in an area that is not normally recognized as a data area, the same effect as described above can be obtained.

[0023]

According to the present invention, since the function of writing back the file structure data to the recording medium itself is added,
It is possible to shorten the time from when the recording medium is inserted until file operation becomes possible.

Further, by writing back the file structure data in an area which cannot be recognized by the normal reproducing apparatus, it is possible to prevent the reproduction by the normal reproducing apparatus from being disturbed.

Further, by having a function of comparing the read file structure data with the data of the recording medium, it is possible to judge that the content of the recording medium has been rewritten after the file structure data is created. By arranging a storage element in an area that is not normally recognized as a data area and writing the file structure data back to that area, it is possible to prevent the normal reproduction apparatus from disturbing the reproduction.

[Brief description of drawings]

FIG. 1 is a flowchart showing processing from insertion of a recording medium in a normal case until file operation becomes possible.

FIG. 2 is a flowchart showing a process from when a recording medium according to the present invention is inserted until file operation becomes possible.

Claims (5)

[Claims] 1. A file structure analysis means for analyzing a file structure of a recording medium on which information is recorded, and a file structure analysis information writing means for writing back an analysis result of the file structure as file structure analysis information on the recording medium. And a file structure information reading unit for reading the file structure analysis information written back to the recording medium. 2. The file structure analysis information writing means writes the file structure analysis information in an area which is not recognized as a data area, and the file structure information reading means reads the written file structure analysis information. A recording / reproducing apparatus characterized by the above. 3. The file structure information reading means reads specific data on the recording medium when the processor in the apparatus reads the information on the recording medium, and the data matches the file structure of the recording medium. The recording / reproducing apparatus according to claim 1 or 2, which has a function of confirming the fact. 4. The recording / reproducing apparatus according to claim 1, wherein the recording / reproducing apparatus has a write-once optical disc and a read / write function for a magneto-optical disc. 5. A recording medium having an area where the file structure analysis information writing unit writes the file structure analysis information and is not recognized as a normal data area.