JP2981448B2 - Information recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus using a recording medium on which a digital audio signal or the like can be arbitrarily recorded, for example, a recordable compact disc.

[0002]

2. Description of the Related Art Conventionally, a so-called compact disk (hereinafter referred to as a CD) in which continuous information such as music information is recorded as digital signals by minute pits which can be optically detected.
Is widely used. The CD is reproduced by an optical disk reproducing apparatus (CD player) dedicated to reproduction.

FIGS. 8 and 9 are schematic diagrams for explaining a format used in a CD. As shown in FIG. 8, one frame (101a) of the recording signal includes a frame synchronization signal (101b) indicating the head of the frame, a subcode (101c) indicating additional information of the main information, and 24 serving as the main information.
It is composed of a data field (101d) obtained by adding a byte code for error detection and correction to byte data.
Note that the data field (101d) has a CIRC (Cross
It is configured by an error detection and correction method that combines interleaving called Interleave Reed Solomon Code). As shown in FIG. 9, the sub-code (101c) includes 98 frames and constitutes one sub-coding frame (102c) (hereinafter also referred to as a sector), and has a track number (a song if the main information is music). Number) and absolute address information on the disk. Since the length of the above-mentioned sector is (1/75) second, 75 sectors are 1 second, and the sector number is minute: second: as the address information of the frame (the frame is in 75 base) sequentially from the inner peripheral side of the disk. It comprises increasing continuous time information and position information.

FIG. 7 is a schematic diagram showing an area arrangement on a disk in a CD.

[0005] The disc (100a) includes a main information recording area (100c) containing main information such as music information and a sector number (absolute address) by a subcode, and each of the main information recording areas (100c) recorded in the main information recording area (100c). Additional information related to the main information, for example, each track number and the recording start sector number of each track, information identifying whether the track is audio information such as music or data for a computer, and information indicating prohibition or permission of digital copy, etc. TOC (Teble Of Contents) area (1
00b). According to the above format, the CD player uses the TOC when loading the disc.
By reading the subcode information of the area (100b), the number of each piece of main information (corresponding to the number of songs in the case of music information)
Recognizing the sector number of the recording start position and the type of information (audio or data), the reproduction of a desired track is performed in response to a subsequent reproduction instruction by the information in the TOC area (100b) and the main information recording area ( By performing the collation of the sector number by the subcode of 100c), the execution is quickly performed with the access operation.

Since these CDs are recorded at a constant linear velocity at the time of recording, that is, a so-called CLV (Constant Linear Volocity) method, the recording density is constant at any position on the disk, and the recording capacity is improved. In an actual CD player, CLV control is executed by controlling the rotation of the disk so that the interval between the reproduction signals of the CD recorded in the above-described signal format in the CLV, for example, the frame synchronization signal, becomes the reference length.

On the other hand, when various types of information such as music information and computer information are recorded and used on a rewritable disk such as a magneto-optical disk which has been developed in recent years, a conventional CD-based reproduction system It is desirable to provide a disc recording / reproducing apparatus having compatibility by sharing the same.

In this case, in particular, in the case of an initial disk on which no information is recorded, the absolute address information and the CLV using the subcode according to the signal format of the CD are used.
Since there is no frame synchronization signal or the like used for the control, an access operation to an arbitrary sector position prior to recording and a necessary CLV control during recording cannot be performed. Therefore, as a recording method of an absolute address equivalent to the absolute address information by the sub-code, each bit is set to “1” or “0” after bi-phase mark modulation of the absolute address.
Depending on the type of the optical disk, there has been proposed an optical disk in which the guide groove is deviated inward or outward in the radial direction of the disk or the width of the guide groove is changed (Japanese Patent Laid-Open No. 64-3963).
No. 2).

In this case, a frequency band of an absolute address by bi-phase mark modulation and an EFM (Eight to Fou
If the frequency band of the recorded information by rteen modulation is made different, it is possible to reproduce them separately from each other. Even in an area where there is no recorded information, the absolute address using the guide groove can be used. Access operation is possible. Also, for the CLV control, by using the reproduction carrier component of the absolute address, an accurate CLV
It can be controlled and can be implemented similarly during recording.

By realizing such a recordable CD, for example, digital audio information from a normal CD player is connected without passing through a D / A converter and an A / D converter, so-called a so-called "quality-free". Digital copying is possible at the user level.

[0011]

The above digital copy is technically easy. On the other hand, if the digital copy is allowed indefinitely, there is a social problem from the viewpoint of protecting the copyright of music software. SCMS (Serial
At this stage, regulations called Copy Management System have been decided and operation has begun. The SCMS digital copy permits only the first generation (that is, only once), and the second and subsequent digital copies are prohibited in the audio device, thereby protecting the copyright of the music software creator.

[0012] However, according to the SCMS, a user himself / herself can use analog recording using a microphone or the like to make a digital copy only once, and despite the fact that the copyright is owned by himself / herself, As a result, an unreasonable situation occurs in which editing using digital copies without quality deterioration cannot be performed.

[0013] Even when only a desired song is selected from a recording medium on which digital copying from a CD or the like has been performed and edited and recorded on another recording medium, digital copying cannot be performed.
There was a demerit that the benefits of digital recording could not be obtained because it was performed by analog copying.

Furthermore, there is a possibility that an unauthorized digital copy can be made by the user, and copyright protection is not sufficient.

[0015]

An information recording / reproducing apparatus according to claim 1 comprises a reproducing means for reproducing desired information on a first recording medium, and an output of the reproducing means at a desired position on a second recording medium. Recording means for recording; anti-duplication processing means for performing anti-duplication processing so that the same information does not exist on the first recording medium and on the second recording medium; The information recording / reproducing apparatus includes means for prohibiting ejection of the recording medium and the second recording medium from the information recording / reproducing apparatus.

According to a second aspect of the present invention, there is provided the information recording / reproducing apparatus according to the first aspect, wherein the duplication preventing processing means reproduces the information from the first recording medium and performs recording on the second recording medium. The information on the first recording medium corresponding to the information to be deleted is deleted.

According to a third aspect of the present invention, in the information recording / reproducing apparatus according to the second aspect, the first recording medium and the second recording medium each include a main recording medium for recording main information such as audio and images. It comprises an information area and a management information area in which management information including recording position information for each piece of main information is recorded, and corresponds to information reproduced from the first recording medium and recorded on the second recording medium. The management information on the first recording medium is deleted.

According to a fourth aspect of the present invention, in the information recording / reproducing apparatus according to the second aspect, the duplication prevention processing means includes a first recording medium corresponding to desired information on a first recording medium to be reproduced. The management information on the medium is deleted, the desired information is reproduced from the first recording medium by the reproducing means, and the desired information is recorded at a desired position on the second recording medium by the recording means, and the second information corresponding to the recorded information is recorded. It is characterized by including processing for updating management information on a recording medium.

According to the present invention, the discharging operation of the first recording medium and / or the second recording medium from the information recording / reproducing apparatus is prohibited until the erasing operation is completed before the recording operation is started. Since significant main information of the content is prevented from being present on a plurality of recording media, copyright protection is sufficiently performed. Further, the prohibition of the discharging operation is performed before the erasing operation is completed before the recording operation is started, so that the protection of the copyright is more sufficient. Further, since the erasure of the main information is performed on the management information, an arbitrary editing operation can be performed in a short time while protecting the copyright.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a disk recording / reproducing apparatus using a rewritable disk will be described below with reference to FIGS.

As shown in FIG. 2, a magneto-optical disc (1) as a rewritable optical disc is provided with a TOC area (1a) which is a management information area at an inner peripheral end thereof, and a TOC area. Most of the area outside (1a) is the main information area (1b). Main information area (1
In b), while music information is recorded, TOC information (1
In a), additional information relating to each information recorded in the main information area (1b), for example, a song number, a start absolute address position, an end absolute address position, and the like for each information are recorded. As shown in FIG. 3, the TOC area (1a) and the main information area (1
In (b), spiral guide grooves (1, 2,...) (shown by hatching for convenience) are formed at predetermined intervals in the disk radial direction. After the bi-phase mark modulation, the absolute address on the disk corresponds to whether it is “1” or “0”, and the guide groove (2.2,...)
.) Are deflected radially inward or outward of the magneto-optical disk (1). Note that the above absolute address indicates a position on the disk and also serves as pre-recorded information as CLV rotation control information. Further, since the absolute address here corresponds to one sector in the CD format, it is also referred to as a sector hereinafter.

FIG. 1 shows an information recording / reproducing apparatus according to the present invention.
FIG. 3 is a block diagram showing an embodiment when applied to a disk recording / reproducing apparatus.

The disk recording / reproducing apparatus according to the present embodiment includes a unit (A) and a unit (B) as devices for performing recording / reproducing. The audio information reproduced from the unit (A) corresponding to the digital copy between
, And each unit is organically controlled by a controller (10). Since each unit has a common component, in the following description, the same component will be given the same name for convenience and will be distinguished by a number. The disk recording / reproducing apparatus according to the present embodiment includes a spindle motor (4) / (24) for supporting and rotating the magneto-optical disk (1) / (22) loaded by the loading mechanism (35) / (36). , Magneto-optical disk during reproduction (1)
/ (22) is provided with an optical head (3) / (23) for irradiating a laser beam to read a recording device. The signal reproduced by the optical head (3) / (23) is reproduced by the reproduction amplifier (5).
/ (25), the binarized magneto-optical signal is supplied to the reproduction data processing circuit (9) / (29), while the pre-recorded information is recorded data detection circuit (6) / (26). ). The recording information detection circuit (6) / (26) is composed of, for example, a band-pass filter and a PLL, and generates a clock synchronized with the pre-recorded information in the reproduction signal extracted by the band-pass filter by the PLL. Has become. Then, a clock synchronized with the above-described prerecorded information, which is formed by biphase mark modulation of the absolute address information, is supplied to the CLV control circuit (7) / (27). C
The LV control circuit (7) / (27) compares the synchronization clock from the recording information detection circuit (6) / (26) with a reference frequency held internally, and uses the difference signal to output the difference signal to the spindle motor (4). By controlling / (24), accurate CLV control is performed. The pre-recorded information in the reproduced signal extracted by the recording information detection circuit (6) / (26) is supplied to the address detection circuit (8) / (28).
The address detection circuit (8) / (28) comprises a bi-phase mark demodulation circuit and an address decoder. After performing bi-phase mark demodulation of the pre-recorded information extracted by the recorded information detection circuit (6) / (26), The address information is decoded into position information on the disk, that is, an absolute address value which is a sector, and is supplied to the controller (10). In the reproduction data processing circuit (9) / (29), two of the reproduction signals supplied from the reproduction amplifiers (5) / (25) are output.
Separation of frame synchronization signal from coded magneto-optical signal and EFM
Demodulate and separate the subcode information to separate the controller (1
0) and performs an error correction operation by CIRC using the parity of the reproduction data. The reproduced data having been subjected to the error correction by the reproduced data processing circuit (9) / (29) is returned to an analog audio signal by a D / A (digital / analog) converter (15) via a switching circuit (14) and is sent to the outside. Output as terminal (16). or,
The reproduced audio data output from the reproduced data processing circuit (9) is also supplied to the switching circuit (30).

On the other hand, the analog audio information input from the terminal (17) is converted into digital audio information by an A / D (analog / digital) converter (18), and then is converted into a recording data processing circuit (19) and a switching circuit. (30).

In the recording data processing circuit (19) / (31), digital audio information from the A / D converter (18) (however, in the recording data processing circuit (31), the A / D converter is connected via the switching circuit (30)). (18) or digital audio information from the reproduction data processing circuit (9)), and generates and adds error detection and correction variability. The subcode information from the controller (10) is added. A synchronization signal is added and supplied to the coil drivers (20) / (32). The coil driver (20) / (32) drives the coil (21) / (33) based on the supplied signal,
At the same time, the optical head (3) / (23) irradiates the magneto-optical disk (1) / (22) with a recording laser beam, thereby recording a signal. The signal format here is the same as that of the CD used in FIGS. 8 and 9, and the description is omitted.

The controller (10) includes an operation unit (12)
The user is instructed to perform recording / reproducing on the units (A) / (B) via the unit (A) / (B). In addition, receiving the absolute address information (ie, the sector value) from the address detection circuits (8) / (28), the position of the optical head (3) / (23) with respect to the disk area is recognized, and an optical head moving mechanism (not shown) And has an access function for moving the optical head to a desired position. Further, the subcode information provided from the reproduction data processing circuit (9) / (29) is recognized, and when the recognized subcode is the content of the TOC area, the subcode information is managed in the TOC memory (11) / (34). The information is stored as information and the TOC memory (1
1) It is configured to read management information from (/). When a new main information function is performed, T
The management information in the OC memory (11) / (34) is updated. When recording the management information, the TOC memory (1
By reading the contents of 1) / (34) and supplying it as management information to the recording data processing circuit (19) / (31), recording is performed through the above recording procedure. In addition to the operation state of each unit, the position of the optical head (3) / (23) based on the absolute address information, that is, the recording or reproducing position, etc., is sequentially displayed on the display section (13) as necessary. It is configured as follows. Furthermore, a loading mechanism (35)
For (36), it is configured to prohibit and permit the ejecting operation of the magneto-optical disk (1) / (22).

FIG. 4 shows a unit (A) in which the information recording / reproducing apparatus according to the present invention is applied to the disc recording / reproducing apparatus of FIG.
FIG. 6 is a flowchart of a process control mainly performed by the controller (10), showing an embodiment in the case of performing a digital copy from the unit to the unit (B), which will be described below as an example of copying music information shown in FIG.

FIG. 5 shows an example of music information arrangement on the magneto-optical disk (1) / (22) before and after the digital copy is performed. The hatched portion in the figure indicates that no significant music information exists. .

(5a) is a music information arrangement on the magneto-optical disk (22) loaded in the loading mechanism (36) of the unit (B) before the digital copy is performed. Only the first music (BM1) is arranged. I have. Therefore, the first content is read from the magneto-optical disk (22) and stored as management information in the TOC memory (34) corresponding to the unit (B) in advance.

[0030]

[Table 1]

(5b) is a music information device before the digital copy on the magneto-optical disk (1) loaded in the loading mechanism (35) of the unit (A), and the first music piece (AM1) to the fourth music piece (AM4). ) Are arranged, and the contents of Table 2 are previously read from the magneto-optical disk (1) and stored as management information in the TOC memory (11) corresponding to the unit (A).

[0032]

[Table 2]

(5c) is the music information arrangement after the digital copy has been performed on the magneto-optical disk (1) of the unit (A) (ie, the result of performing a series of digital copy processing shown in FIG. 4). ) For the third song (AM3)
Is deleted, and the fourth song (AM4) is newly renumbered as the third song (AM3 ').

(5d) is the music information arrangement after the digital copy is performed on the magneto-optical disk (22) of the unit (B) (ie, the result of performing the series of digital copy processing shown in FIG. 4). This indicates that the second song (BM2) has been newly added to (5a). That is, FIG. 5 shows that the third song (AM3) of the magneto-optical disk (1) is located at the beginning of the free area of the magneto-optical disk (22) (BM2).
The following describes the music information arrangement after the digital copy is performed when digital copying is performed. The following describes a case where the digital copy is performed from the music information arrangements (5a) and (5b) to the music information arrangements (5c) and (5d). The operation example of
This will be described with reference to FIG. Since the data to be recorded in the unit (B) is a digital copy, the output of the reproduction data processing circuit (9), which is the reproduction output of the unit (A), is recorded via the switching circuit (30). It is assumed that it is connected as an input of the data processing circuit (31).

In step (S1), the controller (10) issues a digital copy instruction (corresponding to the above, from the operation unit (12)) to the third music (AM3) of the magneto-optical disk (1) of the magneto-optical disk (22). When an instruction to copy to a free area is given, the recording start address (hereinafter, referred to as Ars) in the unit (B) is set (S2), and the reproduction start address (hereinafter, referred to as A) in the unit (A). , Aps) (S3), and a reproduction end address (hereinafter, Ape) in the unit (A) (S4). According to Tables 1 and 2, (Ars) is the head of the free area of the magneto-optical disk (22), and is the next value after the end address of the first music from Table 1 which is the contents of the TOC memory (34). [05 minutes 3
5 seconds 00 frames], and (Aps) reproduces the third song of the magneto-optical disk (1).
From Table 2 which is the contents of the memory (11), the start address of the third music [15:10:00 frame] is given, and the end address of the third music is [26:26:74 frame] as (Ape). ] Is given.

Next, at (S5), (A) of the optical head (3)
After performing an access operation to the (ps) position, an access operation to the (Ars) position of the optical head (23) is performed in (S6), and an eject operation, that is, the magneto-optical disk (1) is performed in (S7). An instruction to prohibit the discharging operation of / (22) is issued to the loading mechanism (35) / (36). Then, in (S8), the reproduction operation from the (Aps) position of the magneto-optical disk (1), that is, the reproduction of the third music (AM3) is started in the above-described operation flow, and in (S9), the magneto-optical disk is reproduced. When recording from the (Ars) position on the disk (22) is started in the above-described operation flow, the contents of the third music (AM3) of the magneto-optical disk (1) are reproduced, and the contents of the magneto-optical disk (22) are reproduced. A digital copy operation to be recorded as the second music (BM2) is started. Then, in (S10), it is determined whether or not the reproduction of the desired music, that is, the reproduction of the third music (AM3) of the magneto-optical disk (1) is completed, by the address detection circuit (8). (A11) is reached, and when (Ape) is exceeded, the desired reproduction is completed, (S11) is reached, the reproduction operation on the unit (A) side is terminated, and (S1) is completed.
At 2), the recording operation on the unit (B) side is terminated, and the recording end address value (hereinafter, referred to as Are) on the magneto-optical disk (22) at that time is detected by an address detection circuit (2).
8)

Next, in (S13), the TOC memory (1
The management information is updated in 1).

Here, the contents of Table 2 correspond to the digital copy by reproducing the third music (AM3) shown in (5b), and the third music (AM3) as shown in (5c) is deleted. Is updated to the content shown in.

[0039]

[Table 3]

That is, as shown in Table 3, the management information on the third music piece (AM3) reproduced in response to the digital copy operation is deleted, and the contents registered as the fourth music piece (AM4) are replaced with the third music piece (AM4). AM3 '). After the optical head (3) accesses the TOC area of the magneto-optical disk (1) in (S14), the contents of the TOC memory (11) shown in Table 3 are recorded in (S15), The management information of the TOC area on the magneto-optical disk (1) is updated.

Subsequently, in (S16), the TOC memory (3
The management information update in 4) is performed.

Here, the contents of Table 1 correspond to the new recording of the second music (BM2) as shown in (5d).
Is updated to the content shown in.

[0043]

[Table 4]

That is, as shown in Table 4, the above (Ars)
Is given as a start address of a new second piece of music, and (Are) is given as an end address.

Then, after the optical head (23) accesses the TOC area of the magneto-optical disk (22) in (S17), the TOC memory (3) shown in Table 4 is accessed in (S18).
After the content of 4) is recorded, after the management information of the TOC area on the magneto-optical disk (22) is updated,
In (S19), an instruction for permitting the ejection operation, that is, the ejection operation of the magneto-optical disk (1) / (22) is issued to the loading mechanism (35) / (36), and the subsequent ejection operation is enabled. , (S20), a series of operations ends.

As described above, digital copying is performed by organically controlling a plurality of units. As is clear from the above example, in this digital copy operation, the audio information that is finally left by deleting the copy source information that has been copied moves between recording media, and the same content is transferred to a plurality of recording media. Presence on the recording medium is prevented. During digital copying and before the copy source information is deleted, the ejection of the magneto-optical disk loaded in the recording / reproducing device of the disk is prohibited. Unauthorized digital copying (obtaining a plurality of recording media having the same contents) is prevented since information erasure cannot be intentionally stopped by disc ejection. As another means for intentionally performing the illegal digital copy, a method of forcibly turning off the power of the disk recording / reproducing apparatus when the digital copy is completed can be considered. The configuration is such that the existence of the main information is recognized only by the management information of the TOC area on the magnetic disk. After digitally copying the audio information, the management information of the copy source is deleted in (S13) to (S15). After that, the management information of the copy destination is registered in (S16) to (S18). Therefore, even if the power is cut off in the middle of each step, the digital copy is not valid before (S14). , (S15)
Since the existence of the copy source information is only deleted from the magneto-optical disk (1) in the middle stage of (S17), the existence of a plurality of registered media having the same contents is not considered in any case. Is to be prevented.

As shown in FIG. 6, as a modified example of the above embodiment, the management information of the copy source corresponding to the information to be digitally copied is first deleted ((S35) to (S37)).
Then, an actual digital copy is performed ((S38)
(S44) to (S44)) to update the management information of the copy destination ((S45) to (S47)), the same effect as described above can be obtained, and other various modifications can be made. That is clear.

In the above embodiment, an example of an information recording / reproducing apparatus using a recording medium having a TOC area in which management information is recorded has been described. However, in a system using a recording medium having no TOC area, a copy source is used. In other words, if the information is adapted to the above embodiment, the third song (AM
By performing the erasing operation (for example, information is superimposed and recorded in a mute state) on the information itself in 3), it is possible to perform the same digital copy though it takes time.

Although the above embodiment has been described using an example of a rewritable disk device for audio information based on the CD format, the present invention is not limited to this, and it is needless to say that the present invention can be applied to other formats. The present invention is not limited to the form, and may be a tape form, and may be implemented in an apparatus that handles image information and computer data without departing from the gist of the present invention.

[0050]

As described above, according to the information recording / reproducing apparatus according to the present invention, a user's intentional unauthorized digital copy can be prevented beforehand, and the copyright holder (software supply side) can feel secure. System.

Further, by performing the operation of deleting the copy source information on the first recording medium, the same information is prevented from being present on the recording medium, and the copyright protection is further enhanced.

The first recording medium and the second recording medium record a main information area in which main information such as audio and images are recorded, and management information including recording position information for each main information. By applying the present invention to a system using a recording medium comprising a management information area, the deletion operation of the copy source information can be performed in a short time, and the power supply of the information recording / reproducing apparatus including the intentional operation of the user can be cut off. ,
Prevents the same information from being present on multiple recording media,
It is possible to provide an information recording / reproducing device capable of performing more secure copyright protection.

The user can perform digital copying without any deterioration in quality as well as music information digitally copied in accordance with SCMS as well as music information recorded by himself using a microphone or the like. It is possible to provide a new information recording / reproducing apparatus capable of performing the above.

[Brief description of the drawings]

FIG. 1 is a block diagram of an information recording / reproducing apparatus.

FIG. 2 is a schematic plan view of a magneto-optical disk.

FIG. 3 is an enlarged plan view of the magneto-optical disk.

FIG. 4 is a flowchart showing a control flow of a digital copy operation of the magnetic recording / reproducing apparatus.

FIG. 5 is a schematic diagram showing music information arrangement on a disc before and after performing a digital copy.

FIG. 6 is another example of a flowchart showing a control flow of a digital copy operation of the information recording / reproducing apparatus.

FIG. 7 is a schematic plan view of a compact disc.

FIG. 8 is a schematic diagram showing a frame signal format of a compact disc.

FIG. 9 is a schematic diagram showing a sector format of a compact disk.

[Explanation of symbols]

 A, B unit 10 Controller 1, 22 Magneto-optical disk 3, 23 Optical head 9, 29 Reproduction data processing circuit 6, 26 Recording information detection circuit 19, 31 Recording data processing circuit

Continuation of front page (56) References JP-A-5-89601 (JP, A) JP-A-5-225695 (JP, A) (58) Fields investigated (Int.Cl. ⁶ , DB name) G11B 20 / Ten

Claims (4)

(57) [Claims] 1. A reproducing means for reproducing desired information on a first recording medium, a recording means for recording an output of the reproducing means at a desired position on a second recording medium, and on a first recording medium and on a second recording medium. A copy protection processing means for performing a copy protection process so that the same information does not exist in the above, and discharging the first recording medium and the second recording medium from the information recording / reproducing apparatus until the copy protection process is completed. An information recording / reproducing apparatus comprising a prohibiting means. 2. The duplication prevention processing means deletes information on the first recording medium corresponding to information reproduced from the first recording medium and recorded on the second recording medium. Item 2. An information recording / reproducing apparatus according to Item 1. 3. The first recording medium and the second recording medium record a main information area in which main information such as audio and images are recorded, and management information including recording position information for each piece of main information. A management information area, which corresponds to information to be reproduced from the first recording medium and recorded on the second recording medium.
3. The information recording / reproducing apparatus according to claim 2, wherein the management information on the recording medium is deleted. 4. The duplication preventing processing means deletes management information on the first recording medium corresponding to desired information on the first recording medium to be reproduced, and reproduces the desired information from the first recording medium by the reproducing means. 4. The method according to claim 3, further comprising the step of recording at a desired position on the second recording medium by the recording means and updating the management information on the second recording medium corresponding to the recorded information. Information recording and reproducing device.