KR20070058284A - Method and apparatus of recording range closing in recording medium - Google Patents

Abstract

An apparatus and a method for closing a recording range of a recording medium are provided to enable a disc drive to deal with mixed recording media by defining a new recording medium in disc information even though a new recording medium is mixed with a current recording medium. Disc information is read and a kind of a recording medium is determined. It is determined whether a closing instruction for a recording range or a session is received. When the closing instruction is received, the recording range is closed according to the kind of the recording medium. The recording medium includes a new medium in addition to an H(High)-to-L(Low) medium. The new medium an L-to-H medium. The disc information is recorded in a management area.

Description

Method and apparatus for recording range closing in recording medium

1 is a detailed diagram of a single-layer structure of a write once Blu-ray optical disc (BD-R) to which the present invention is applied.

2A to 3C show types of recording ranges in connection with the present invention;

4 illustrates an example of a recording method using a recording range of the present invention and a case in which a session is applied.

5 shows an example of a method for closing a recording range in accordance with the present invention.

6A to 6B show another example of the recording range closing method according to the present invention.

7a to 7b show another example of a closing method according to the present invention

8A-8B show another example of a closing method according to the present invention.

9 is a block diagram of an optical recording and reproducing apparatus according to the present invention;

10 is a recording medium reproducing method according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: recording / playback section 11: pickup

12: control unit 13: signal processing unit

14: Servo 15: Memory

16: micom 17: decoder

18: Encoder

The present invention relates to a recording medium, a recording medium recording method and a recording apparatus.

A recording medium capable of recording a large amount of data is not only an increase in recording capacity, but also a compact disc (CD) and a DVD (Digital Versatile Disc). Recently, high quality video data and high quality audio data are recorded. The new high-density recording medium that can record and store for a long time, that is, the next generation recording medium is making continuous technological progress.

In addition, the next generation recording medium has been developed into a storage medium which can be used more conveniently by not only increasing the recording capacity but also improving the recording / reproducing speed.

Blu-ray Disc (BD), one of the next generation recording media technologies, is a next-generation optical recording solution capable of recording a significantly larger amount of data than the DVD. Along with other digital devices, technical specifications of the world standard are being discussed.

Therefore, as described above, the technical specification of the world standard has not yet been established, and recently, a discussion on media using a new recording medium is in progress, and a method of recording / reproducing the recording medium using the next-generation recording medium technology as described above. And problems with implementing the device.

Accordingly, an object of the present invention is to provide a new physical structure suitable for a recording medium and a recording medium recording range closing method and apparatus using the same, which are created in view of the above circumstances.

In order to achieve the above object, the recording medium recording range closing method according to the present invention comprises the steps of reading the disc information (disc information) to determine the media type of the recording medium; Determining whether a close command for a recording range or a session has been received after determining the media type; And if the closing command is received as a result of the determination, closing the recording range according to the media type.

In this case, it is preferable that the media of the recording medium include new media other than H (igh) -to-L (ow) media.

The new media is preferably L (ow) -to-H (igh) media.

The disc information is preferably recorded in the management area.

In addition, it is preferable to use a flag bit indicating push-pull polarity and recorded mark polarity defined in the disc information to determine the media type.

Further, when the push-pull polarity flag bit defined in the disc information is '0', the media of the recording medium is preferably H-to-L media.

And if the push-pull polarity flag bit defined in the disc information is '1', the media of the recording medium is preferably new media.

Further, when the recording indication polarity flag bit defined in the disc information is '0', the medium of the recording medium is preferably H-to-L media.

And when the recording indication polarity flag bit defined in the disc information is '1', the media of the recording medium is preferably new media.

In addition, the new media is preferably L-to-H media.

In the recording range closing process, when the media is H-to-L media, one recording unit is selectively recorded, and from the open entry of the recording range information. It is desirable to remove.

In the process of closing the recording range, if the media is L-to-H media, the protection area is assigned to the head position of the recording unit following the last recording area and the last recording unit of the recording range. It is preferable to remove from the open entry of the recording range information after recording.

The size of the protection area is preferably N recording units.

In addition, the last recorded address is preferably one of an address where user data is finally recorded and an address finally recorded at the end of recording.

Another example of a recording medium closing method according to the present invention is that when the recording range is closed when the medium of another optical disc is L-to-H, the recording range or the closing command of the session is received. Comparing whether the size of the unrecorded area after the last recorded area in the range is greater than twice the size of the protected area; As a result of the comparison, if the size of the unrecorded area is larger than twice the size of the protected area, the protected area is recorded after the last recording address and at the end of the recording range, respectively, and is removed from the open entry of the recording range information. Characterized in that it comprises a process of closing.

The final recording address is preferably one of an address where user data is finally recorded and an address finally recorded at the end of recording.

In addition, when the size of the unrecorded area is smaller than twice the size of the protected area as a result of the comparison, it is preferable to record the entire unrecorded area as the protected area and to close the recording range by removing from the open entry of the recording range information.

In addition, the size of the protection area is preferably composed of N recording units.

An apparatus according to the present invention includes a pickup unit for reading disc information, data and management information; And a micom for determining the media type of the recording medium from the read disc information, and controlling the pickup unit to close the recording range according to the determined media type.

In this case, if the media type is a new media type, the microcomputer is configured with N recording units at the beginning of the recording unit following the last recording address of the recording range and at the end of the recording range. It is preferable to control the pickup section so as to record and close each of the protective areas to be configured.

The final recording address is preferably one of an address where user data is finally recorded and an address finally recorded at the end of recording.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings. A recording medium according to the present invention configured as described above, and a recording medium recording apparatus and a method of updating management information of the recording medium will be described in detail with reference to the accompanying drawings.

In addition, the terminology used in the present invention was selected as a general term widely used as possible now. However, in certain cases, the applicant arbitrarily selected a term, and in this case, the meaning is described in detail in the corresponding part. Therefore, the terminology used in the present invention should be understood as not merely the name of the term but the meaning of the term.

As used herein, the term " recording medium " refers to all media on which data is stored, and includes, for example, optical disks, magnetic disks, and magnetic tape systems. Hereinafter, the recording medium of the present invention will be described using BD-R (recordable) as an example for convenience of description.

In the context of the present invention, a table showing the characteristics of the recording medium and the push-pull signal is discussed.

Unrecorded record Unrecorded H-to-L H L H P / P L H L L-to-H L H L P / P H L H

Currently, the recording medium of BD-R media is defined as high-to-low ('HtL') media. However, research on the recording medium is ongoing, and it may be changed to a new recording medium in the future. At this time, for example, there will be low-to-high ('LtH') media which is being researched to make a disc at low cost as the new recording medium. Hereinafter, the LtH media will be described as an example as a new recording medium.

In Table 1, the upper two columns are for HtL media, where the unrecorded area has a high reflectance and the recording area has a low reflectance. The lower two columns are for LtH media. Unlike the HtL media, the LtH media has a low reflectance in the unrecorded area and a high reflectance in the recording area.

In the LtH media, the characteristics of the push-pull signal for generating the tracking signal of the servo are not recorded. As shown in Table 1, the push-pull level of the recorded area is not recorded. Lower than the level of the defined area. And the polarity of the push-pull signal is opposite to the HtL media. That is, assuming that the unrecorded area and the recording area are mixed in the recording medium in the order shown in Table 1, the reflectance of the HtL media is H-> L-> H, and the push-pull signal characteristic is L-as opposed to the reflectance. > H-> L. In addition, the reflectivity of the LtH media is L-> H-> L, and the push-pull signal characteristic is H-> L-> H.

In this regard, the two media may coexist in the future. In this case, as described above, the HtL media and the LtH media have different characteristics, so backward compatibility between the two media should be ensured. The present invention is to ensure the playback compatibility in the drive (drive) in the case where the two media coexist, in brief with respect to the structure of the disk with respect to the present invention Figure 1 is applied to the present invention 1 Detailed description of the single layer structure of the write-once Blu-ray optical disc BD-R.

The write once optical disc of the present invention has a spare area for disc management, as well as a temporary disc management area for recording management information before disc finalization or disc closing. And a "Disc Management Area" ("DMA") for recording final management information at the time of the disc final, the following write-once optical disc (BD-R) structure of the present invention. Referring to the features of the following.

First, due to the characteristics of an optical disc that can be written once, the temporary disc management area (TDMA) contains not only defect management information generated during use of the disc, but also general management information indicating the recording state on the disc. Since the recording is no longer possible, the final management information in the temporary disk management area TDMA is transferred to the disk management area DMA for recording.

The temporary disk management area (TDMA) is largely divided into two types. First, the temporary disk management area (TDMA) has a fixed size (for example, 2048 cluster) in a lead-in area, and is always initialized when a disk is initialized. Variable size (P1 clusters) that is associated with the size of OSA 0 (N1 clusters) in the outer spare area (OSA 0), which is allocated and is used first, and the variable size among the spare areas in the data area. Is allocated when the disk is initialized, and there is a second TDMA 1 to be used when TDMA 0 is used. Disc management information is recorded in the TDMA 0 and the TDMA 1, and the lower part of FIG. 1 shows the type of management information recorded in the temporary disc management area (TDMA) in the write once optical disc of the present invention. The same management information is recorded in and TDMA 1, and FIG. 1 shows only the case in which TDMA 0 is recorded for convenience of description.

In addition, the disk management information is largely classified into three types: first, a temporary defect list (TDFL) for recording a defect list for managing a defective area of a disk as defect management information, and second, a continuous recording mode. (Sequential Recording Mode: SRM) is a continuous recording range information (SRRI) that informs the recording status on the disc, and third is a pointer for specifying the position of the latest temporary defect list (TDFL) and continuous recording range information (SRRI) ( Temporary Disc Definition Structure (TDDS) for recording various necessary information in the disc including a pointer. In relation to this, when the on-disk recording method is a random recording mode (RRM), a space bit map (SBM) will be recorded instead of the continuous recording range information SRRI.

In addition, the management information will be recorded in the temporary disk management area (TDMA) whenever an update is required, but in particular, the temporary disk definition structure (TDDS) should always record the latest information, so that the temporary defect list (which is always updated) TDFL) or continuous recording range information (SRRI), and the recording size is one sector.

Also, if the user data area or the temporary disk management area (TDMA) that can no longer be recorded on the disc or the user no longer wants to write to the disc, finalize or close the disc. In this case, the last management information recorded at the end of the management information recorded in the temporary disk management area TDMA is transferred to the disk management area DMA.

In relation to the present invention, a method of ensuring playback compatibility in a drive when the two media coexists, when a request for ensuring playback compatibility from a user is requested, all unrecorded areas on the disc are filled and filled. up) and then finalize the disk.

Hereinafter, the type of a recording range allocated to the disc and the recording method using the same in the write once optical disc of the present invention will be described in detail.

First, in the present invention, " recording range " is an area created (allocated) for recording in a writeable optical disc such as a BD-R, in various manners as necessary or in accordance with recording progress. The type can be defined. Hereinafter, the type of the recording range defined in the present invention will be described with reference to Figs. 2A to 3C.

First, FIGS. 2A to 2D show types of open recording ranges among recording ranges. The open recording range means a recording range that can be recorded in a corresponding area, and the "writable" means having next writable address (NWA) information. Accordingly, the open recording range means a recording range having recordable address NWA information, and a recording range in which no recording is possible without having the recordable address NWA is called a close recording range. The close recording range will be described later with reference to FIGS. 3A to 3C.

FIG. 2A shows the Invisible Recording Range as the first of the open recording ranges, which is always the outermost section of the disc or the recording range formed on the first blank disc, where no recording has yet been performed. It means an area. That is, the recording range will be defined only a start address and the end of the area will be the end of user data area, indicating the location of the last recorded area as no recording has been performed yet. The value of the last recorded area (LRA) has a value of '0', and the recordable address NWA has the same value as the start address. In the present invention, the final recording address LRA refers to any one of addresses finally recorded when user data is finally finished.

FIG. 2B illustrates an incomplete recording range as the second of the open recording ranges, and indicates an area in which some recording is performed in the invisible recording range of FIG. 2A. . That is, this recording range, like the invisible recording range, only a start address is defined and the end of the area will be the end of user data area, but some recording is performed. According to the last recording address (LRA) indicates the last position where the normal data was recorded, so the recordable address (NWA) corresponds to the head position of the recording unit following the last recording address (LRA) This is information.

FIG. 2C shows an empty open recording range as the third of the open recording ranges, wherein the invisible recording range of FIG. 2A and the incomplete-recording range of FIG. Unlike incomplete recording range, it refers to a recording range that is formed for recording in the middle region, not the outermost circumference of the disc. In other words, this is the case when the host or the user has made an open recording range for recording and has not yet performed the recording. Since the host or user has a start address and an end address but is not yet recorded, The value of the last write address LRA will be '0' and the recordable address NWA will be the same value as the start address.

FIG. 2D shows the last recorded partial recording open recording range as the last fourth of the open recording ranges, in which some recording is performed in the empty open recording range of FIG. 2C. Mean the recorded range. Therefore, it has a start address and an end address, and as some recordings are performed, the last recording address LRA indicates the last position where normal data is recorded, and the recordable address NWA is the last. This is the case where the information corresponds to the head position of the recording unit following the recording address LRA. The number of open recording ranges is limited to the number of write once discs, so that up to 16 can be present in the disc.

3A to 3C show the types of close recording ranges among the recording ranges. The closed recording range means a recording range in which recording is not possible in the corresponding area, and "not recording" means that there is no recordable address (NWA) information. The closed recording range may be generated after all of the corresponding areas have been recorded, but may be forcibly closed even if a recordable area remains in the corresponding area by a close command of a user or a host.

FIG. 3A shows an empty closed recording range as the first of the closed recording ranges. In the open empty recording range of FIG. 2C, the closed recording range is closed by the close command without recording. It means the recording range.

FIG. 3B shows a Partially recorded closed Recording Range as the second of the closed recording ranges. In the state of the Partially recorded open Recording Range of FIG. 2D, the FIG. It means the recording range closed by.

3C shows the third complete recording range of the closed recording range, which indicates a recording range in which normal user data recording is completed until the end of the corresponding area.

The information on each recording range described in FIGS. 2A to 3C is recorded in the temporary disk management area (TDMA) as recording range information (RRI). By recording the information and the start address and the last recording address (LRA) information of all recording ranges in the recording range information RRI, the optical recording / reproducing apparatus (Fig. 9) obtains the latest recording range information RRI. Then, information on the recordable area (open recording range) and the recorded area (close recording range) can be read in the current disc. Therefore, the recording and reproducing of the optical disc which can be recorded once is made possible.

4 illustrates an example of a recording method using a recording range of the present invention and a case where a session is applied.

In this regard, the term " session " means a recording unit that is higher than a recording range composed of at least one or more recording ranges, and is generally referred to as a multi session within an optical disc. It is possible to take advantage of), but as only the last session becomes a recordable session and all previous sessions are closed, all record ranges existing in the previous session are also closed. It will be changed to a range.

For example, if the recording range # 1 and recording range # 2 are allocated and recorded in session 1 at the beginning of the disc, and the session 1 is to be terminated and a new session 2 is to be started, the recording range existing in the previous session 1 is recorded. # 1 and recording range # 2 are changed to the close recording range so that recording can no longer be performed in session 1.

Subsequently, if recording range # 3 and recording range # 4 are assigned within the newly allocated session 2, recording range # 5 automatically becomes an invisible-recording range, so that recording ranges # 3 to # 5 are all recordable areas. However, in FIG. 5, for example, the recording range # 4 shows a case where the recording range # 4 is changed to the forced close recording range by the host or the user so as not to record any more. That is, it will be sufficient if there is at least one open recording range in the recordable session and not all recording ranges need to be open recording ranges.

therefore, The final recording state of the disc shown in FIG. 5 can be confirmed from the recording range information RRI recorded in the temporary disk management area TDMA, from the state information of all recording ranges recorded in the recording range information RRI. In this case, session 2 is currently in use, and recording range # 3 and recording range # 5 in session 2 become a recordable area (open recording range), and session 1 is already recorded.

In the present invention, a case where HtL media and LtH media are mixed above is assumed. At this time, referring to the recording range closing method according to the type of the media, the drive that supports recording in the LtH media according to the present invention, the disc information recorded in the management area when the BD-R disc is inserted; Is read to determine the type of the BD-R media. In this case, the management region may include, for example, a permanent information & control data (PIC) zone in a high frequency modulated (HFM) region.

In relation to the present invention, referring to an example of configuring the disc information, if the 'push-pull ploarity flag bit' is '0', the recording medium of the disc is HtL media; The medium is defined as the new media. In addition, if the 'recorded mark polarity flag bit' is '0', the recording medium of the disc is HtL media, and if it is '1', the recording medium of the disc is new media. In this case, the new media may be, for example, LtH. The flag bits defining the push-pull polarity and the polarity of the recorded mark for the recording medium of the disc are arbitrary, but not limited thereto.

After determining the type of the BD-R media by the method described above, it is checked whether a 'close track / session' command is received from the host. As a result of the check, if a command is received from the host, closing of the recording range is performed according to the determined media type.

When receiving the 'close track / session' command from the host when the determined media type is HtL media, the drive selectively records one recording unit and then opens the recording range information RRI. Remove from open entry. When receiving the 'close track / session' command from the host when the determined media type is LtH media, the drive writes after the last recording address LRA and at the end of the recording range. Remove from open entry of range information (RRI). In this case, the recording unit may be, for example, a cluster.

As described above, the definition of the flag bit in the disc information recorded in the management area is because the method of closing the open recording range depends on the type of media. That is, in the case of HtL media, when an open recording range (= track) is closed when using a BD-R disc, an unrecorded area (unrecorded area existing after the last recording address (LRA)) in the corresponding recording range is not recorded. Instead, only the operation of deleting from the list of open recording ranges of the recording range while only one recording unit is recorded or left as it is. Therefore, when finalization is performed after the disk is closed, a large amount of time is required to fill the unrecorded area of all open and closed recording ranges with dummy data. Can provide inconvenience.

6A and 6B are diagrams showing an example of a closing method of an open recording range according to the present invention. Fig. 6A is for the open write range, and Fig. 6B is for the close write range.

In the open write range of Fig. 6A, there is a last write address LRA which is the last recorded address from the start address of write range #n. In the close write range of Fig. 6B, the open write range is to be closed. . In the present invention, as described above, the protection region is to be used by the closing method.

On the basis of one recording range, all following the last recording address LRA of the recording range are unrecorded areas. Therefore, in the present invention, filling all unrecorded areas with dummy data in order to close the open recording range is less efficient. Therefore, the size of the unrecorded area is determined so that the first and end portions of the unrecorded area are protected. Guard area) to close the method.

In the present invention, the protection area used for the above-mentioned close is defined in advance. The definition of the protection area is arbitrary and preferably in the N recording range of the dummy data.

The method of the open write range according to the present invention will be described in detail with reference to the closed write range of Fig. 6B. When there is no longer a recordable address NWA, after the last write address LRA, the unrecorded area is defined. The protection area according to the present invention is placed in an unrecorded area and then closed. In this case, the protected area is arranged by placing one protection area at the beginning of the unrecorded area after the last recording address (LRA), and then closing another protection area at the end of the corresponding recording range.

7a to 7b are views showing another example of a closing method according to the present invention. FIG. 7A shows a case where the invisible recording range is opened, and FIG. 7B shows a case where the invisible recording range is closed. In the case of an invisible recording range as described above, the entire recording range is an unrecorded area. Therefore, it will take a lot of time if all of the recording range is filled with dummy data. Therefore, according to the present invention, one protected area is arranged at the beginning of the invisible recording range and another protected area is arranged at the end of the recording range to close the open invisible recording range.

6A to 7B, the unrecorded area after the last write address LRA of the corresponding recording range is larger than the size of the protection area according to the present invention. Therefore, according to the present invention, it will be a much more effective method than the method of filling all unrecorded areas after the last write address LRA with dummy data.

8a to 8b are views showing another example of a closing method according to the present invention. In the case of Fig. 8A, the recording range is opened. In the case of Fig. 8B, the recording range is closed. Referring to FIG. 8A, most of the recording range is a recording area and there are few unrecorded areas after the last recording address LRA. That is, the unrecorded area after the last write address LRA is smaller than the size of the protected area according to the present invention.

In such a case, referring to the closing method according to the present invention, referring to FIG. 8B, in this case, the present invention has no space for positioning the unprotected area at the beginning and the end. Therefore, in such a case, all of the unrecorded area may be treated as a protected area and filled with dummy data.

As described above, when the closing method of the open write range according to the present invention is summarized, when the closing request for the write range is received, the drive determines how large the unrecorded area after the last write address (LRA) is.

If the size of the unrecorded area is greater than twice the size of the protection area defined in the present invention, the start of the unrecorded area after the last recording address LRA and the last part of the corresponding recording range are determined. Closing is performed by replacing with a protected area. However, as a result of the determination, if the size of the unrecorded area is smaller than the size of twice the size of the protected area previously defined in the present invention, closing is performed by replacing all unrecorded areas after the last write address LRA with the protected area.

The above description is about one open recording range and the efficiency can be improved by performing the closing method for all the recording ranges as described above.

Fig. 9 is a block diagram of the optical recording / reproducing apparatus according to the present invention, which controls the operation of the pickup section 11 and the pickup section 11 for reading data recorded in the optical disk, disc management information, and file system information. A signal which restores the reproduction signal received from the servo 14 and the pickup unit 11 to a desired signal value, or modulates the signal to be recorded into a signal recorded on an optical disc, and transmits the signal to the pickup unit 11. The processing unit 13, a memory 15 for temporarily storing the disc management information and the file system information read out from the optical disc, and the microcomputer 16 for controlling the operation are basically configured. 20).

In addition, the control unit 12 is an element for controlling the operation of the entire optical recording and reproducing apparatus, and receives a user command through an interface with the user, and transmits the user command to the microcomputer 16 in the recording and reproducing unit 20. It plays a role of controlling the operation as it is, and in particular, recording and playback by utilizing the disk management information transmitted from the recording and playback section 20, for example, recording range information (RRI) in the temporary disk management area (TDMA). A command is generated and passed back to the recording and playback section 20.

In this regard, the AV decoder 17 finally decodes the output data under the control of the controller 12 and provides the same to the user. The AV encoder 18 controls the controller 12 to perform a function of recording a signal on the optical disc. The input signal is converted into a signal of a specific format, for example, an MPEG 2 transport stream, and provided to the signal processing unit 13 in the recording / reproducing unit under the control of the "

Looking at the process of reproducing the recording medium using the optical recording and reproducing apparatus according to the present invention described above, Figure 10 is a method of reproducing the recording medium according to the present invention. In this case, it is assumed that the recording medium of the recording medium is mixed with the HtL media and LtH media. The recording range closing method is different depending on the type of media. It is also exemplified that the drive supports writing to LtH media.

When the BD-R disc is inserted, the drive reads the disc information DI recorded in the management area to determine the type of the BD-R media. The determination method may determine the media type by using the 'push-pull ploarity flag bit' and / or the 'recorded mark polarity flag bit' in the disc information (S10).

After determining the type of BD-R media, the drive checks whether a 'close track / session' command is received from the host. As a result of the check, if a command is received from the host, a recording range closing method is performed according to the determined media type (S20).

Here, the recording range closing method is performed differently. That is, when the media type is HtL media as determined by the step S10, the drive selectively records one recording unit, and then removes from the open entry of the recording range information RRI to close the recording range. Perform (S32). That is, in the case of HtL media, when an open recording range (= track) is closed when using a BD-R disc, an unrecorded area (unrecorded area existing after the last recording address (LRA)) in the corresponding recording range is closed. Only the operation of deleting from the open recording range list of the recording range is performed while only one recording unit is recorded or left as it is without recording.

However, if it is determined in S10 that the media type is LtH media, the drive writes a guard area consisting of N recording units after the last recording address (LRA) and at the end of the recording range. Closing of the recording range is performed by removing from the open entry of RRI (S34).

At this time, in performing the closing of the recording range in S34, the drive first compares the size of the unrecorded area after the last write address LRA of the recording range with twice the size of the protection area according to the present invention. As a result of the comparison, if the size of the unrecorded area is larger than twice the size of the protected area, as described above, after recording the protected area of N recording units after the last recording address (LRA) and at the end of the recording range, Perform closing.

However, as a result of the comparison, if the size of the unrecorded area is smaller than twice the size of the protected area, then all of the unrecorded areas are treated like the protected area.

According to the recording medium recording range closing method and apparatus according to the present invention as described above, even if a new recording medium is developed and mixed with the current recording medium, the drive can reproduce the optical disc in consideration of this.

Further, according to the present invention, even if mixed with a new recording medium, the drive can cope by defining the new recording medium in the disc information.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (22)

Reading the disc information to determine the media type of the recording medium; Determining whether a close command for a recording range or a session has been received after determining the media type; And closing the recording range according to the media type if the closing command is received as a result of the determination. The method of claim 1, The recording medium recording method of claim 1, wherein the recording medium includes new media other than H (igh) -to-L (ow) media. The method of claim 2, And the new media is L (ow) -to-H (igh) media. The method of claim 1, And the disc information is recorded in a management area. The method of claim 1, Recording medium recording range closing, characterized by using a flag bit indicating push-pull polarity and recorded mark polarity defined in the disc information to determine the media type. Way. The method of claim 5, And if the push-pull polarity flag bit defined in the disc information is '0', the media of the recording medium is H-to-L media. The method of claim 5, And if the push-pull polarity flag bit defined in the disc information is '1', the medium of the recording medium is a new medium. The method of claim 5, And the recording medium polarity flag bit defined in the disc information is '0', the recording medium recording medium is H-to-L media. The method of claim 5, And if the recording indication polarity flag bit defined in the disc information is '1', the medium of the recording medium is a new medium. The method according to claim 7 or 9, And the new media is L-to-H media. The method of claim 1, The recording range closing process optionally records one recording unit when the media is H-to-L media and removes it from an open entry of recording range information. And a recording medium recording range closing method. The method of claim 1, The process of closing the recording range includes recording the protection area at the head position of the recording unit following the last recording address and the last recording unit of the recording range when the media is low-to-high media. A recording medium recording range closing method, characterized in that it is removed from an open entry of recording range information. The method of claim 12, And the protection area is composed of N recording units. The method of claim 12, And the final recording address is any one of an address where user data is finally recorded and an address finally recorded at the end of recording. The method of claim 1, And the recording medium is a BD-R. In closing the recording range when the medium of the optical disc is low-to-high, if a closing command of the recording range or session is received, Comparing whether the size of the unrecorded area after the last recorded area in the recording range is larger than twice the size of the protected area; As a result of the comparison, if the size of the unrecorded area is larger than twice the size of the protected area, the protected area is recorded after the last recording address and at the end of the recording range, respectively, and is removed from the open entry of the recording range information. A recording medium closing method comprising the step of closing. The method of claim 16, The last recording address is one of an address where user data is finally recorded and an address finally recorded at the end of recording. The method of claim 16, When the size of the unrecorded area is less than twice the size of the protected area as a result of the comparison, recording medium is closed by recording all of the unrecorded areas as a protected area and removing them from the open entry of the recording range information. Way. The method of claim 16, And said protected area is comprised of N recording units. A pickup unit for reading disc information, data, and management information; And a micom for determining a media type of a recording medium from the read disc information and controlling the pickup unit to close a recording range according to the determined media type. . The method of claim 20, If the media type is a new media type, the microcomputer is configured with a head position of a recording unit following the last recording area of the recording range and N recording units at the end of the recording range. And controlling the pickup to record and close the protective areas respectively. The method of claim 20, And the last recorded address is any one of an address where user data is finally recorded and an address finally recorded at the end of recording.

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