JPH1040649A - Data recorder and data reproducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record data which are different in their reproducing methods in different areas on a recording medium and to prevent overwriting of data on one another in each individual area at the time of recording such data on the recording medium. SOLUTION: A data discriminating signal 13 is generated by an input data discriminator 12 with data inputted, and area management information is set in accordance with the data discriminating signal 13. The area management information is formatted together with the data by a format converter 15, and after they are converted into a recording signal, the signal is recorded on a magnetic tape 18 via a recording head 17. Then, a recording start point in each area is decided in view of a positioning error, and this point is recorded in the area management information, thus preventing the adjacent areas from being superimposed over each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data recording device and a data reproducing device which can be used, for example, when recording data on a magnetic tape.

[0002]

2. Description of the Related Art In recent years, with the improvement of digital signal processing technology, a device capable of digitally recording data on a magnetic tape has been realized. The magnetic tape has a low cost per unit recording capacity, and can easily have a function as a streamer for recording large-capacity data. An example of this is DDS (Digital Data Storage) using DAT (Digital Audio Tape) as a streamer.

[0003] The streamer checks the recorded data and re-records it if necessary. "Read-after-Write"
Otherwise, data reliability cannot be guaranteed. However, it is not necessary to specify the recording / playback rate.

On the other hand, if the data is video data or audio data, real-time recording (or reproduction) is required, and if read-after-write is performed, this may not be satisfied. However, since the reliability of video or audio data is not required as much as general data, Read
-A device that records without performing after-write (hereinafter referred to as archive) is used.

[0005] Furthermore, there are various types of video and audio data, and the transmission rate, that is, the recording rate, varies depending on the application.

When a single tape is divided into a plurality of areas and used, it is necessary to set the areas so that they do not overlap with each other. Was. The regions are spaced a predetermined sufficient distance so that they do not overlap with each other.

[0007]

However, as described above, although the conventional streamer and archive have the same basic functions, they differ slightly in the recording method and the contents of the area management information. Therefore, there is a problem that the user needs to purchase both devices. For example, even if video data and the like are provisionally recorded using a conventional recording device having only a streamer function that does not need to specify a recording / reproduction rate, the recording / reproduction rate information is not recorded. When reproducing data, there is a problem that the recording rate is not known and real-time performance cannot be guaranteed.

In a conventional recording apparatus, when one tape is divided into a plurality of areas and used, it is necessary to preformat the tape in advance. However, preformatting takes time and effort, and has the drawback that preformatted tapes are very expensive.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording apparatus capable of recording data of different reproduction methods so that the data can be correctly reproduced in consideration of the conventional problems as described above.

Another object of the present invention is to provide a data recording apparatus capable of determining a recording position of data so as not to overwrite recorded data in consideration of the conventional problems as described above.

In addition, the present invention has been made in consideration of the above-mentioned problems, and it is an object of the present invention to provide a reproducing apparatus capable of reproducing a recorded data according to a reproducing method even if the type of the recorded data is different. I do.

[0012]

According to the present invention, there is provided a reproducing method identifying means for specifying a reproducing method of data based on input data to be recorded and outputting a result of the specifying. And a recording means for recording the output specific result as management information on a predetermined recording medium when recording the data to be recorded.

According to a second aspect of the present invention, in the data recording apparatus, the management information is recorded in association with the identification result and information on a recording position of the data.

According to a third aspect of the present invention, the data to be recorded is recorded on the predetermined recording medium, and the recording means stores the management information in a management information recording area different from a recording area of the data. This is a data recording device that records information.

According to a fourth aspect of the present invention, the predetermined recording medium is an auxiliary storage medium different from a recording medium of the recording destination of the data to be recorded, and a casing for accommodating the recording medium of the recording destination. It is a data recording device attached to the body.

According to a fifth aspect of the present invention, there is provided a data recording apparatus in which the data to be recorded is sequentially recorded on a recording medium of the recording destination.

According to a sixth aspect of the present invention, in the data recording apparatus, the specific result includes a reproduction rate at the time of reproducing the data to be recorded.

According to a seventh aspect of the present invention, there is provided a data recording apparatus having external instruction receiving means for receiving an external instruction on the reproduction rate, wherein the received reproduction rate is recorded in the management information recording area. It is.

The present invention according to claim 8 is a data recording apparatus in which information indicating that the reproduction rate is not specified is recorded as the management information for the data for which the reproduction rate need not be specified. is there.

According to a ninth aspect of the present invention, there is provided a first recording means for recording data on a recording medium, a recording control means for causing the first recording means to perform recording by dividing a recording area,
A second recording unit that records a positioning error of a data recording start point in each of the recording areas in a management information recording area, wherein the recording control unit performs the recording based on a history of the recorded recording start point positioning errors. Is a data recording device for determining the position of the recording start point of data to be newly recorded.

According to a tenth aspect of the present invention, the management information recording area is provided on a data recording medium for recording the data to be recorded or on an auxiliary storage medium attached to a housing for accommodating the recording medium. It is a recording device.

According to the present invention, in the management information recording area, in addition to the positioning error of the recording start point,
This is a data recording device in which the position of a recording start point and the size of the recording area are also recorded as area management information.

According to a twelfth aspect of the present invention, the position of the recording start point of the area of the data already recorded immediately before the recording area of the data to be newly recorded is S (n), The range of the positioning error of the recording start point of the data area being recorded is ± E (n), the size of the data area recorded immediately before is X (n), and the area of the data area to be newly recorded is X (n). The range of the positioning error at the recording start point is ± E (n +
In the case of 1), the recording control means sets the position of the recording start point of the area of the data to be newly recorded to S (n + 1) =
This is a data recording device that sets S (n) + E (n) + X (n) + E (n + 1) or later.

According to a thirteenth aspect of the present invention, when data recorded by the data recording device according to the first aspect is reproduced, the management information is read, and a reproduction method of data to be reproduced is determined. A data reproducing apparatus for performing the reproduction based on the reproduced method.

According to the first aspect of the present invention, the reproducing method identifying means is configured to perform the following based on the input data to be recorded.
The method of reproducing the data is specified, the specified result is output, and when the recording unit records the data to be recorded,
The output specific result is recorded on a predetermined recording medium as management information.

According to the ninth aspect of the present invention, the first recording means records data on a recording medium, and the recording control means causes the first recording means to perform recording by dividing a recording area,
The second recording means records the positioning error of the data recording start point in each recording area in the management information recording area.
Further, the recording control means determines the position of the recording start point of the data to be newly recorded based on the history of the positioning error of the recorded recording start point.

According to a thirteenth aspect of the present invention, when reproducing data recorded by the data recording apparatus according to the first aspect, the management information is read out, and a reproduction method of data to be reproduced is determined. The reproduction is performed based on the reproduced reproduction method.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a block diagram illustrating an embodiment of the present invention. In FIG. 1, 11 is an input terminal, 12 is an input data discriminator, 13 is a data discrimination signal,
14 is an area management information generator, 15 is a format converter, 16 is a recording signal converter, 17 is a recording head, and 18 is a magnetic tape. The reproducing method identifying means of the present invention includes the area management information generator 14 and the like, and the recording means of the present invention includes the recording head 17 and the like.

The operation of this embodiment will be described below with reference to FIG.

The data input from the input terminal 11 is input to an input data discriminator 12 and outputs a data discrimination signal 13. The data identification signal 13 is supplied to the area management information generator 14, and the area management information is generated according to the input data.

Input data and area management information generator 1
4 is supplied to the format converter 15, where the data and the area management information are converted into a predetermined format. After that, the recording signal converter 1
6, the appropriate error correction coding, track pattern generation,
A process such as modulation is performed, and the data is recorded on the magnetic tape 18 through the recording head 17.

FIG. 2 is a diagram for explaining a format in the present embodiment. As shown in the drawing, the leading end of the tape includes a leader and a load / unload area. An area management information recording area and a data area are allocated in this order after the leading end of the tape, and there is a trailer area at the end of the tape. There may be a plurality of data areas (area 1, area 2,...).

In the area management information recording area, tape information as information of the entire tape and area management information as information for each data area are recorded. A portion of the recordable portion to which no area is assigned is referred to as an unused area.

FIG. 3 is a diagram for explaining an example of area management information in the present embodiment. At least the area number, the data identification flag, the recording start point of the area, and the area size are recorded in the management information of each area. For example, the area management information generator 14 sets the data identification flag to 1 when the data identification signal 13 is a streamer, and to 0 when the data identification signal 13 is an archive.

As described above, according to the present embodiment, by recording information relating to the data reproduction method in the area management information, it is possible to record data having different reproduction methods.

The arrangement of the data of the management information in each area and the number of allocated bits can be set arbitrarily. In this embodiment, two types of reproduction methods are used. However, the same applies to the case where data of other reproduction methods is input.

(Second Embodiment) FIG. 4A is a block diagram for explaining a second embodiment of the present invention. In FIG. 4A, reference numeral 101 denotes a memory. The memory 101 is attached to a housing containing a magnetic tape. FIG. 4B is a perspective view showing a state in which the memory 101 is attached to a housing containing a magnetic tape.

The operation of this embodiment is different from that of the first embodiment in the following points. That is, in the present embodiment, the area management information similar to the area management information described in the first embodiment is not recorded in the area management information recording area provided at the head of the magnetic tape.
Record at 01. Therefore, in this case, the area management information generator 14 generates management information for each area and a memory address to which the management information is to be written, and records it at a predetermined address in the memory 101. In the present embodiment, access to the management information can be performed faster than in the case where the area management information is recorded on the magnetic tape as in the first embodiment.

In the above embodiment, the area management information is the area management information recording area on the magnetic tape,
Memory 10 attached to housing housing magnetic tape
Although the case of recording in either one of the above has been described,
However, the present invention is not limited to this. (Third Embodiment) FIG. 5 is a block diagram for explaining another embodiment of the present invention. In FIG. 5, reference numeral 51 denotes a rate determiner, 52 denotes a rate signal, and 53 denotes a tape feed controller.

The data input from the input terminal 11 is supplied to the format converter 15 after the recording rate is determined by the rate determiner 91. The recording rate determines the effective rate for the recording apparatus based on an external instruction or information included in the data. Rate determiner 5
1 outputs a rate signal 52 and outputs the area management information generator 14
And supplied to the tape feed controller 53.

The area management information generator 14 holds the recording rate of the data to be recorded in the area management information. The area management information is supplied to the format converter 15, and is format-converted together with the input data according to a predetermined format. The format-converted data is subjected to appropriate processing such as error correction coding, track pattern generation, and modulation by a recording signal converter 16, and is controlled by a tape feed controller 21 to pass through a recording head 17 through a magnetic tape 18. Recorded above.

FIG. 6 is a diagram illustrating an example of area management information according to the present embodiment. In the management information of each area in the present embodiment, at least an area for recording an area number and a recording rate is provided.

FIGS. 7 to 9 are diagrams illustrating an example of a method of recording data according to a recording rate. In the description of the present embodiment, data is video data, and the purpose is to record the data in real time.

FIG. 7 is a diagram for explaining the cylinder and the head of the data recording apparatus, and FIG. 8 is a diagram for explaining the input data and the operation of the head for recording along the time axis. In this embodiment, one frame is recorded on eight tracks.

Assuming that the rotational speed of the cylinder is constant in the head configuration as shown in FIG. 7, the recording rates x and x / 2 are equal to two.
Recording can be performed at various recording rates. That is, when recording at the recording rate x, as shown in FIG. 8A, recording is performed using a head of A → B → A → B →. That is, two tracks are recorded for each rotation of the cylinder.

On the other hand, when the recording rate is x / 2, the tape feed speed is reduced to half that in the case of (a), and A → B ′ → A → B ′ → Record in the order of ... That is, one track is recorded for each rotation of the cylinder. The time required for recording on the same amount of tracks is (b) twice as long as (a).

Assuming that the recording rate is x, data is input so that the input rate does not exceed x. The input data is divided into frames, which are data processing units, subjected to format conversion, further converted into recording signals in track units, and recorded on a magnetic tape.

When the input rate does not exceed x / 2, the recording rate can be set to x / 2. When recording at a recording rate of x / 2, the tape feed speed is set to 1/2 of the case of (a). At this time, the frame period is doubled in order to make the size of the frame, which is the unit of data processing, common to that of FIG.

FIG. 9 is a conceptual diagram illustrating an example when data of a rate other than the input rates x and x / 2 (for example, 3x / 4) is input to the data recording apparatus.

Here, unlike the case described with reference to FIG. 8, data is input in sector units.
It is assumed that a maximum of eight sectors can be arranged in one frame.

The relation between the input rates is x /
Since 2 <3x / 4 <x, when the input rate is 3x / 4, the recording rate is x.

Now, if the input rate and the recording rate are both x
In this case, assuming that data is recorded in all eight sectors, when the input rate is 3 × / 4, six sectors should be recorded, and dummy data should be recorded in the remaining two sectors. Actually, the input rate may be an average value, and an average of 6 sectors is recorded in one frame.

When data is recorded on a tape, the recording rate is set to x and held in the area management information, and a recording operation is performed. At the time of reproduction, if it can be determined whether the data is data or dummy data for each sector, the data can be reproduced at the rate x, and if the dummy data is removed, the data can be automatically reproduced at the rate of 3x / 4.
Real-time playback becomes possible.

As described above, according to the present embodiment, data at different recording rates can be recorded in real time.

The recording rate of the data recording apparatus is 2
However, if an appropriate head configuration is made, it is not limited to two types. Further, by changing the rotation speed of the cylinder, it is possible to cope with an arbitrary recording rate. Also, the number of tracks and sectors per frame is
The present invention is applicable to any number. Also,
The insertion position of the dummy data may be any sector in the frame as long as it can be determined whether or not the data is dummy data. Further, the recording timing is delayed by one frame period with respect to the input, but this may be any delay time.

Incidentally, similarly to the second embodiment, the area management information may be recorded in a memory attached to the housing. (Fourth Embodiment) FIG. 10 is a block diagram illustrating an embodiment of the present invention.

The present embodiment will be described below with reference to FIG.

When a command for setting a new data area is input from the input terminal 11, the command is supplied to the format converter 15. Area management information setting device 1
Reference numeral 4 denotes the recording start point of the area to be set this time, the recording start point of the immediately preceding area, the size of the area, the range of the positioning error of the recording start point of the immediately preceding area, and the recording start point of the currently set area. Is obtained from the range of the positioning error and stored in the area management information. The recording start point of the immediately preceding area, the size of the area, and the range of the positioning error of the recording start point have already been recorded (or held to be recorded) on the tape. As for the range of the positioning error of the recording start point of the area set this time, the tape feed controller 53 gives the area management information setting unit 14 a value unique to this recording apparatus.

The area management information is transmitted to the format converter 15
, And is format-converted together with the input data according to a predetermined format. Further, the area management information setting unit 14 supplies the recording start point of the currently set area to the tape feed controller 41.

The format-converted data is subjected to appropriate processing such as error correction encoding, track pattern generation, and modulation by the recording signal converter 16, and the tape feed controller 4
In accordance with the control 1, the data is recorded on the magnetic tape 18 through the recording head 17. FIG. 11 is a diagram illustrating an example of area management information according to the present embodiment. In the area management information according to the present embodiment, at least information relating to the area number, the recording start point of the area, the area size, and the positioning error of the recording start point is recorded. The recording start point is an absolute track number or an absolute frame number, and the size of the area and the range of the positioning error of the recording start point are given by the number of tracks or the number of frames. Here, the absolute track number and the absolute frame number refer to numbers obtained by counting tracks and frames from the beginning of the tape, respectively. Here, the recording head 17 includes the first recording unit and the second recording unit of the present invention. The recording control means of the present invention is a means including the area management information setting device 14 and the like.

FIG. 12 is a diagram illustrating the setting of the recording start point in the present embodiment in more detail, and this setting method will be described with reference to FIG.

In FIG. 12, the area 1 recorded immediately before
Is the recording start point of S (1), the error range when positioning the recording start point of area 1 is ± E (1), and the size of the area allocated to area 1 is X (1). . These are already recorded at predetermined positions of the management information in the area 1 shown in FIG. Next, when the range of the positioning error of the recording start point of the area 2 to be set immediately after the area 1 is ± E (2), the area 2 is not overwritten on the area 1 so that the data is not damaged. Next, the recording start point S (2) of the area 2 is determined.

Although the recording start point of the area 1 recorded in the area management information is S (1), it is actually recorded with an error ± E (1), so the actual recording position of the area 1 is 11
As shown in FIG. 12 (a), when it is shifted to the forefront as shown in FIG. 12 (a), (S (1) -E (1)) changes to (S (1)-
E (1) + X (1)), and when it shifts to the rear most, as shown in (a2) of FIG. 12, from (S (1) + E (1)) to (S (1) + E (1)). ) + X (1)).

When recording the area 2, in order to record the data in the area 1 without any loss, even if the area 1 is shifted backward at the maximum and the area 2 is shifted forward as much as possible, the two overlap completely. It does not have to match. Therefore, FIG.
As shown in FIG. 2 (b), the area 1 is shifted backward as much as possible (in the case of a2. At this time, the end of the area 1 is S (1) + E (1) + X
(1)) In consideration of the case where the area 2 shifts forward as much as possible, the recording start point S (2) of the area 2 is set to (S (1) + E (1) + X ( 1)) Set after + E (2). At this time, even if the position is shifted E (2) forward due to the positioning error of the recording start point of the area 2 (b2), the two areas do not overlap, and the data in the area 1 is not lost by overwriting.

As described above, according to this embodiment, the information on the recording start point of each area and the positioning error of the recording start point are held in the management information of each area, and the recording start of each area is started. By determining the points in consideration of the positioning error, data can be recorded without adjacent areas eroding each other.

Note that an error may occur between the size of the set area and the size of the area on the tape at the time of actual recording due to the problem of the tape feeding accuracy. In this case, it is only necessary to have information on the positioning error at the beginning and end of each area. That is, in the present embodiment, the range of the positioning error at the end of the area 1 is ± E ′ (1)
As shown in FIG. 13, S (2) is replaced by S (2) = S (1) + E ′ (1)
+ X (1) + E (2).

Generally, the recording start point of the N-th area is set to S
(N), the size of the area is X (N), the range of the positioning error at the recording start point of each area is ± E (N), and the range of the positioning error at the end of the area is ± E ′ (N). , N + 1-th recording start point S (N + 1) can be determined as follows.

S (N + 1) = S (N) + E '(N) + X (N) + E (N + 1) In this embodiment, the area management information is stored in the area management information recording area on the magnetic tape. Although the recording is performed, a configuration in which the recording is performed in a memory attached to the housing as in the second embodiment is also possible. In this case, the recording means for recording in the memory corresponds to the second recording means of the present invention.

Further, the area management information described in the present invention has been described only as necessary in accordance with each embodiment. However, in all embodiments, the first to fourth embodiments are described. It goes without saying that the area management information up to the above-mentioned form may be combined. The area management information can also record an area name, recording date and time, and the like. (Fifth Embodiment) FIG. 14 is a block diagram illustrating a fifth embodiment of the present invention. In FIG. 14, 141 is a reproduction signal converter, 142 is an area management information extractor, 143 is a reproduction rate, and 144 is an output terminal.
It is assumed that the area management information of the magnetic tape 18 is recorded in the area management information recording area of the magnetic tape as described in the above embodiment.

In the above configuration, the operation of this embodiment will be described next.

That is, when the magnetic tape 18 is set,
The management information of the area to be reproduced is read by the magnetic head 17 from the area management information recording area recorded at the head of the magnetic tape. The read management information is demodulated by the reproduction signal converter 141 and subjected to appropriate error correction decoding and the like. Then, the area management information extractor 142 extracts necessary reproduction information, for example, a reproduction rate 143 (same as the recording rate). The extracted reproduction rate 143 is supplied to the tape feed controller 53, and the tape runs at a speed corresponding to the reproduction rate.

The data is stored in the magnetic head 1 in the same manner as the management information.
7, demodulated by the reproduction signal converter 141, subjected to appropriate error correction decoding and the like, supplied from the area management information extractor 142 to the output terminal 144, and reproduced.

As described above, according to the present embodiment, the management information of each area recorded at the head of the magnetic tape is read, and the reproduction method is determined for each area.
Data with different reproduction methods (that is, different recording methods) can be correctly reproduced for each area.

As in the second embodiment, the area management information may be recorded in a memory attached to the housing.
In this case, the management information can be reproduced more quickly.

As described above, in the above embodiment,
By determining the reproduction method of the input data and recording this in the area management information recording area on the recording medium, data having different reproduction methods such as streamer data and archive data or data having different recording rates are recorded. It becomes possible.

In the above embodiment, the method of reproducing the input data is determined, and this is recorded in the area management information of the auxiliary storage medium attached to the housing in which the recording medium is accommodated. , It is possible to record data having different reproduction methods, such as streamer data and archive data, or data having different recording rates. Further, in this case, it is easy to access the management information.

In the above embodiment, the recording start point of each area is determined including the positioning error, and the recording start point and the range of the positioning error are recorded in the area management information, so that the adjacent areas can be mutually determined. It can be placed without being overwritten.

Further, the circuit scale for realizing the above embodiment is extremely small, and the practical effect is large.

[0079]

As is apparent from the above description, the present invention has an advantage that data of different reproduction methods can be recorded so as to be reproduced correctly.

Further, the present invention has an advantage that the data recording position can be determined so as not to overwrite the recorded data.

Further, the present invention has an advantage that even if the type of the recording data is different, the recording data can be reproduced according to the reproducing method.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a region of the magnetic tape according to the embodiment;

FIG. 3 is a schematic diagram illustrating area management information according to the embodiment;

FIG. 4A is a block diagram illustrating a second embodiment of the present invention. (B): A perspective view showing a state in which the memory 101 is attached to a housing containing a magnetic tape.

FIG. 5 is a block diagram illustrating a third embodiment of the present invention.

FIG. 6 is a schematic diagram illustrating area management information according to the embodiment;

FIG. 7 is a diagram illustrating a configuration of a recording head and a cylinder according to the embodiment.

FIG. 8 is a diagram illustrating a recording method on a magnetic tape when the recording rate is x and x / 2 in the embodiment.

FIG. 9 shows a recording rate of 3 × /
FIG. 7 is a diagram for explaining a sector recording method in the case of No. 4;

FIG. 10 is a block diagram illustrating a fourth embodiment of the present invention.

FIG. 11 is a schematic diagram illustrating area management information according to the embodiment.

FIG. 12A is a schematic diagram illustrating a recording range of an area 1 in the present embodiment. (B): a schematic diagram for explaining the recording start point of the area 2 in the present embodiment.

FIG. 13 is a block diagram illustrating a case where an error occurs between the size of a set area and the size of an area on a tape when recording is actually performed in the embodiment.

FIG. 14 is a block diagram illustrating a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Input terminal 12 Input data discriminator 13 Data discrimination signal 14 Area management information generator 15 Format converter 16 Record signal converter 17 Recording head 18 Magnetic tape 51 Rate determiner 52 Rate signal 53 Tape feed controller 142 Area management information reproduction vessel

Continuation of front page (72) Inventor Shinji Hamai 1006 Kazuma Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (13)

[Claims] 1. A reproducing method identifying means for identifying a reproduction method of data based on input data to be recorded and outputting a result of the identification, and a method of recording the data to be recorded when recording the data to be recorded. Recording means for recording the specified result as management information on a predetermined recording medium. 2. The data recording apparatus according to claim 1, wherein the management information is recorded in such a manner that the identification result and information relating to a recording position of the data are associated with each other. 3. The data to be recorded is recorded on the predetermined recording medium, and the recording means records the management information in a management information recording area different from a recording area of the data. The data recording device according to claim 1, wherein 4. The recording medium according to claim 1, wherein the predetermined recording medium is an auxiliary storage medium different from a recording medium on which the data to be recorded is recorded. The data recording device according to claim 1, wherein 5. The data recording apparatus according to claim 1, wherein the data to be recorded is sequentially recorded on a recording medium of the recording destination. 6. The data recording apparatus according to claim 1, wherein the identification result includes a reproduction rate at the time of reproducing the data to be recorded. 7. An external instruction receiving means for receiving an external instruction regarding the reproduction rate, wherein the received reproduction rate is recorded in the management information recording area. The data recording device according to any one of the above. 8. The data which does not need to specify the reproduction rate, information indicating that the reproduction rate is not specified is recorded as the management information. Data recording device. 9. A first recording unit for recording data on a recording medium, a recording control unit for causing the first recording unit to perform recording by dividing a recording region, and a recording start point of data in each recording region Second recording means for recording the positioning error in the management information recording area, wherein the recording control means starts recording of data to be newly recorded based on the history of the positioning error of the recorded recording start point. A data recording device for determining a position of a point. 10. The management information recording area is provided on a recording medium of the data to be recorded, or on an auxiliary storage medium attached to a housing that houses the recording medium. The data recording device according to the above. 11. The management information recording area, wherein in addition to the positioning error of the recording start point, a position of a recording start point and a size of the recording area are recorded as area management information. Item 11. The data recording device according to Item 9 or 10. 12. A recording start point position of a data area already recorded immediately before a recording area of data to be newly recorded is set to S (n), and a recording of an area of the data recorded immediately before is performed. The range of the positioning error of the start point is ± E (n), and the size of the data area recorded immediately before is X
(n) When the range of the positioning error of the recording start point of the data area to be newly recorded is ± E (n + 1), the recording control means starts recording the data area to be newly recorded. The position of the point is S (n + 1) = S (n) + E (n) + X
12. The data recording apparatus according to claim 11, wherein the value is set after (n) + E (n + 1). 13. When reproducing data recorded by the data recording apparatus according to claim 1, the management information is read out, a reproduction method of data to be reproduced is determined, and based on the determined reproduction method. A data reproducing device for performing the reproduction.