KR100463553B1 - Recording medium with record capacity information, and method for expressing record capacity - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium having recording capacity information and a recording capacity displaying method, wherein a default recording capacity is recorded in an unused area of an embossed data zone of a lead-in area during a manufacturing process of a recording medium, and then reformatted. The variable recording capacity and the presence or absence of the variable recording capacity are recorded in the unused area of the rewritable data zone of the lead-in area, and are recorded in the unused area of the embossed data zone or the rewritable data zone according to the variable state of the recording capacity. By performing data recording or reproduction with reference to the recorded recording capacity, it is possible to perform accurate amount of data recording or reproduction.

Description

Recording medium with record capacity information and method for expressing record capacity}

TECHNICAL FIELD The present invention relates to a recording medium system, and more particularly, to an optical recording medium having a variable recording capacity and a recording capacity display method.

Generally, optical recording media are classified into three types, such as read-only ROM, write-once worm type, and rewritable rewritable type. .

The ROM type optical recording medium may include a compact disc read only memory (CD-ROM) and a digital versatile disc read only memory (DVD-ROM), and a worm type optical recording medium may be written once. Recordable Compact Discs (CD-Rs) and Recordable Digital Versatile Discs (DVD-Rs).

In addition, freely and repeatedly rewritable discs include a rewritable compact disc (CD-RW) and a rewritable digital versatile disc (DVD-RW).

FIG. 1 shows the structure of the rewritable optical disc, and is divided into a lead-in area, a data area, and a lead-out area from the innermost side in the radial direction. do.

The data area is divided into zones for random access. Each zone is a user area in which actual data is recorded and a spare area for use when a defect occurs in the user area. Divided.

As a method of allocating the spare area, a method of allocating only one zone of the data area or a part of the data area in addition to FIG. 1 described above has been proposed.

One of them is a method of positioning a spare area at the innermost circumference of the data area, and the spare area at this time is called a primary spare area.

The primary spare area is an area allocated during the initial formatting process, and is not assigned a logical sector number (LSN). A supplementary spare area is allocated near the end of the user area, which may extend from the outer area to the inner circumference. That is, the remaining data area except the main / secondary spare area becomes a user area.

The lead-in area is composed of an embossed data zone, a mirror zone, and a rewritable data zone, as shown in FIG. The embossed data zone is a preformatted area in the disc manufacturing process, and the recorded data cannot be changed. Here, the embossed data zone is composed of a blank zone, a reference signal zone, a blank zone, a control data zone, and a blank zone.

The control data zone includes an embossed data field, and the data field includes embossed control data. The control data is composed of 192 error correction code (ECC) blocks, and the contents of 16 sectors are repeated 192 times in each ECC block shown in FIG. 3. Here, the first sector of each block includes physical format information, the second sector contains disk manufacturing information, and the remaining sectors are not used.

In addition, the rewritable data zone is an area for rewriting control information which is varied by rewriting data, and includes a guard track zone, a disc test zone, a drive test zone. A protection track zone, a disc identification zone, and a defect management area (DMA1 & DMA2) for managing defects on the disc.

The recording capacity of such an optical disk varies from 2.6G (G is a gigabyte), 4.5G, 4.7G, and the like, and the recording capacity is determined by track pitches that usually indicate between pit rows.

However, even if the track pitch or the disc size (for example, 8 cm and 12 cm) is the same, the recording capacity of the disc may be different. For example, if the spare area of the data area is used as the user area or the lead-out area is used as the user area by the disc manufacturing process or the user reformatting, even if the track pitches are the same at the same disc type and the disc size, the recording capacity of the disc is equal. Will be different.

In this case, the recording capacity of the disc cannot be known only by the track pitch or the disc size.

Thus, accurate amount of data recording or reproduction is not made.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a recording capacity display method of a recording medium for displaying the recording capacity of the recording medium in the lead-in area of the recording medium.

Another object of the present invention is to provide a recording medium having the recording capacity information displayed by the above recording capacity display method.

1 is a view showing the structure of a typical optical disk

FIG. 2 is a view showing the structure of the lead-in area of FIG.

3 is a view illustrating a structure of a control block of the control data zone of FIG.

4A is a view showing an example in which the recording capacity determined by default in the recording capacity display method according to the present invention is displayed in the unused area of the control data zone of the lead-in area.

4B shows an example in which the variable recording capacity is displayed in the unused area of the rewritable data zone of the lead-in area in the recording capacity display method according to the present invention.

5 is a flowchart illustrating a recording / reproducing method of an optical recording medium according to the present invention.

A recording medium having recording capacity information according to the present invention for achieving the above object includes recording capacity information displayed on a specific area of the optical recording medium, wherein the recording capacity information indicates an initial recording capacity, The recording capacity information is changed as the initial recording capacity is changed according to the allocation or expansion of a spare area for a defective area, wherein the spare area is located on the inner and / or outer area of the optical recording medium. It is characterized in that it is assigned or extends from the outer circumferential region toward the inner circumference.

The changed recording capacity is displayed on the recordable area of the lead-in area of the optical recording medium.

The initial recording capacity is indicated by identification information.

The recording capacity is indicative of the total recording capacity of the optical record carrier.

The recording capacity is at least the recording capacity excluding the spare area.

In the recording capacity display method of the optical recording medium according to the present invention, the initial recording capacity is displayed on a specific area of the optical recording medium, and when the recording capacity of the optical recording medium is changed, the specified recording capacity is displayed. Characterized in that the initial recording capacity on the area is changed, wherein the recording capacity of the optical recording medium is changed in accordance with the allocation and / or expansion of the spare area for defect management, the spare area being the inner peripheral area and / or the optical recording medium. Or allocated on the outer circumferential region or extending from the outer circumferential region toward the inner circumference.

And the changed recording capacity is displayed on the recordable area of the lead-in area of the optical recording medium.

The changed recording capacity is displayed together with the identification information.

The changed recording capacity is indicative of the total recording capacity of the optical record carrier.

The recording capacity is at least the recording capacity excluding the spare area.

An optical recording medium according to the present invention comprises a lead-in area including an embossed area and a recordable area, a data area for recording data, and a lead-out area, the optical recording medium having at least a recording capacity of the data area. Recording capacity information for indicating, wherein the recording capacity information is recorded on a specific area of the optical recording medium, and has a value that varies according to allocation or expansion of a spare area for defect management, Or on an inner circumferential area and / or an outer circumferential area of the optical record carrier, or extending from the outer circumferential area toward the inner circumference.

The recording capacity information is recorded in a recordable area of the lead-in area of the optical recording medium.

The recording capacity information is displayed together with the identification information.

The recording capacity information is indicative of the recording capacity of the entire area of the optical recording medium.

The recording capacity information indicates a recording capacity excluding the capacity of the spare area.

A method for displaying a recording capacity of an optical record carrier including at least a primary spare area according to the present invention comprises the steps of: determining whether an auxiliary spare area is allocated or the size of the auxiliary spare area is changed during formatting or during a recording mode. And displaying the changed recording capacity on a specific area of the optical recording medium according to the determination result.

And the specific area is a recordable area on the lead-in area of the optical recording medium.

The changed recording capacity is displayed together with the identification information.

And displaying the changed identification information according to the changed recording capacity.

The changed recording capacity is indicative of the recording capacity excluding the capacity of the auxiliary spare area.

An optical recording medium according to the present invention includes a spare area including a primary spare area and an auxiliary spare area, and recording capacity information displayed on a specific area of the optical recording medium, wherein the recording capacity information includes variable recording capacity information. The variable recording capacity information is at least variable according to a change in size of the auxiliary spare area, and the auxiliary spare area is variable in an inner circumferential direction based on an outer circumferential area of the optical recording medium.

The recording capacity information indicates a recording capacity excluding at least the auxiliary spare area.

The optical recording medium according to the present invention includes a main spare area allocated in the inner circumferential direction, includes recording capacity information displayed on a specific area of the optical recording medium, the recording capacity information includes variable recording capacity information, The variable recording capacity information is information which varies depending on the presence of the auxiliary spare area, and the auxiliary spare area is allocated on the outer peripheral area of the optical recording medium.

An optical recording medium according to the present invention includes a lead-in area including an embossed area and a recordable area, a data area for data to be recorded or reproduced, a lead-out area, and a main spare area and an auxiliary spare area on the data area. Wherein at least recording capacity information for indicating a recording capacity of a user area of the data area is recorded on a specific area, the recording capacity information is changed according to the existence or variation of the size of the auxiliary spare area; The auxiliary spare area may be present in the outer circumferential area or vary in the inner circumferential direction with respect to the outer circumferential area.

A recording capacity display method according to the present invention includes a spare area including a user area, a main spare area and an auxiliary spare area, wherein the main spare area is allocated on the inner circumference of the optical recording medium, and the auxiliary spare area is an optical spare area. A method for indicating a recording capacity of an optical recording medium allocated on an outer peripheral area of a recording medium or extending in an inner peripheral direction from an outer peripheral area, the method comprising: determining whether the size of the auxiliary spare area has changed during a formatting step or a recording mode And recording recording capacity information related to the user area in a specific area of the optical recording medium according to the determination result.

A recording capacity display method according to the present invention includes a spare area including a user area, a juice spare area and an auxiliary spare area, wherein the main spare area is allocated on the inner circumference of the optical recording medium, and the auxiliary spare area is an optical spare area. CLAIMS 1. A method for displaying a recording capacity of an optical recording medium allocated on an outer circumferential area of a recording medium or extending from the outer circumferential area in an inner circumferential direction, the method comprising: reading recording capacity information related to a user area of the optical recording medium; Controlling recording or reproducing of data according to the read recording capacity information, wherein the recording capacity information indicates the changed recording capacity when the size of the auxiliary spare area is changed during the formatting step or the recording mode. It is characterized by.

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.

Hereinafter, with reference to the accompanying drawings illustrating the configuration and operation of the embodiment of the present invention, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, By the technical spirit of the present invention described above and its core configuration and operation is not limited.

The present invention firstly displays a recording capacity of a disc, which is set as a default, in an unused area of an embossed data zone of a lead-in area in the manufacturing process of a recording medium, for example, a disc. In particular, an unused byte (eg, BP 17-31 or 33-47 bytes) of the first sector including physical format information in the control data block of the control data zone of the embossed data zone is designated as a default in the manufacturing process. The recording capacity of the disc is shown as in FIG. 4A.

Thereafter, the recording capacity of the disc may vary depending on the user's reformatting. That is, when the spare area is formatted as a user area and the spare area is used as the user area, or the lead-out area is formatted as the data area and the lead-out area is used as the data area, the recording capacity of the disc can be increased.

Therefore, the changed recording capacity of the disc should be displayed. Since the embossed data zone of the lead-in area cannot correct data, it is displayed in the unused area of the rewritable data zone of the lead-in area.

For example, it can be displayed in the unused area of the disc ID zone of the rewritable data zone.

The disc ID zone includes a groove, a land, a header field, a mirror field, and a recording field, the contents of which are not used, so the recording is made here. An area capable of displaying the capacity and an area capable of displaying the presence or absence of variable recording capacity are allocated, and information indicating that the variable recording capacity and recording capacity have been changed is displayed as shown in FIG. 4B. In this case, the recording capacity variable display area sets information indicating that the recording capacity is not changed by default.

Fig. 5 is a flow chart of the present invention showing such a recording / reproducing method of the optical disc. When the recording capacity is changed by reformatting by the user's selection (step 501), the rewritable data zone of the lead-in area as shown in Fig. 4B. The new recording capacity and the recording capacity are respectively recorded in the recording capacity display area allocated to the unused area and the recording variable variable presence / absence display area (step 502).

For example, when the default recording capacity is increased by reformatting, the increased recording capacity and information indicating that the recording capacity is variable are recorded in the recording capacity display area and the recording capacity variable presence / absence display area of the rewritable data zone, respectively. When the recorded recording capacity reaches the recording capacity determined by default by re-formatting, the recording capacity at this time and the information that the recording capacity has not changed are recorded in the recording capacity display area and the recording capacity variable presence / absence display area of the rewritable data zone, respectively.

At this time, the optical disc recording / reproducing apparatus checks whether recording or reproduction is selected by the user (step 503), and if recording or reproduction is selected, checks whether or not the recording capacity is indicated in the variable recording capacity display area. (Step 504).

If the recording capacity is not changed in step 504, the recording capacity recorded in the embossed data zone of the lead-in area is read to record or reproduce the data (step 505).

On the other hand, if the recording capacity is changed in step 504, the recording capacity recorded in the rewritable data zone of the lead-in area is read to record or reproduce data (step 506).

For example, if the default recording capacity is 4.5G and the recording capacity increased by reformatting is 4.7G (G is Giga), data can be recorded or reproduced by 4.5G in step 505, and in step 506 You can record or play back data up to 4.7G.

As described above, according to the recording medium having the recording capacity information according to the present invention, and the recording capacity display method, the default recording capacity is recorded in the unused area of the embossed data zone of the lead-in area during the manufacturing process of the recording medium. And the recording capacity and the recording capacity variable changed by the reformatting are recorded in the unused area of the rewritable data zone of the lead-in area, and are recorded in the embossed data zone or the rewritable data zone according to the variable state of the recording capacity. By recording or reproducing data with reference to the recorded recording capacity, it is possible to perform accurate amount of data recording or reproducing.

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 (31)

In the optical recording medium, Containing recording capacity information displayed on a specific area of the optical recording medium, The recording capacity information indicates an initial recording capacity, The recording capacity information is changed as the initial recording capacity is changed according to allocation or expansion of a spare area for a defective area. And the spare area is allocated on an inner circumferential area and / or an outer circumferential area of the optical recording medium or extends from the outer circumferential area toward the inner circumference. The method of claim 1, And the changed recording capacity is displayed on a recordable area of the lead-in area of the optical recording medium. The method of claim 1, And the initial recording capacity is indicated by identification information. The method of claim 1, And the recording capacity refers to the total recording capacity of the optical recording medium. The method of claim 1, And the recording capacity is a recording capacity excluding at least the spare area. A method of displaying a recording capacity of an optical record carrier, Display an initial recording capacity on a specific area of the optical record carrier, When the recording capacity of the optical recording medium is changed, to change the initial recording capacity on the specific area to display the changed recording capacity, The recording capacity of the optical record carrier is changed in accordance with the allocation and / or expansion of the spare area for defect management, and the spare zone is allocated on the inner and / or outer zones of the optical record carrier, or from the outer zone. Recording capacity display method of the optical recording medium, characterized in that it is extended to the side. The method of claim 6, And the changed recording capacity is displayed on a recordable area of the lead-in area of the optical recording medium. The method of claim 6, And the changed recording capacity is displayed together with the identification information. The method of claim 6, And said changed recording capacity is indicative of the total recording capacity of said optical recording medium. The method of claim 6, And the recording capacity is a recording capacity excluding at least the spare area. An optical recording medium comprising a lead-in area including an embossed area and a recordable area, a data area for recording data, and a lead-out area, The optical recording medium includes at least recording capacity information for indicating a recording capacity of a data area, and the recording capacity information is recorded on a specific area of the optical recording medium, and is allocated to the allocation or expansion of a spare area for defect management. And the spare area is allocated on an inner circumferential area and / or an outer circumferential area of the optical recording medium or extends from the outer circumferential area toward the inner circumference. The method of claim 11, And the recording capacity information is recorded in a recordable area of the lead-in area of the optical recording medium. The method of claim 11, And the recording capacity information is displayed together with the identification information. The method of claim 11, And the recording capacity information indicates a recording capacity of the entire area of the optical recording medium. The method of claim 11, And the recording capacity information indicates a recording capacity excluding the capacity of the spare area. A method for indicating a recording capacity of an optical record carrier comprising at least a primary spare area, Determining whether the auxiliary spare area is allocated or the size of the auxiliary spare area changes during formatting or during recording mode; And displaying the changed recording capacity on a specific area of the optical recording medium according to the determination result. The method of claim 16, And the specific area is a recordable area on a lead-in area of the optical record medium. The method of claim 16, And the changed recording capacity is displayed together with the identification information. The method of claim 16, And the recording capacity represents the total recording capacity of the optical recording medium. The method of claim 18, And displaying the identification information changed according to the changed recording capacity. The method of claim 16, And the changed recording capacity is indicative of the recording capacity excluding the capacity of the auxiliary spare area. A spare area that includes a primary spare area and a secondary spare area, Recording capacity information displayed on a specific area of the optical recording medium, the recording capacity information including variable recording capacity information, And the variable recording capacity information is at least variable according to a change in size of the auxiliary spare area, and the auxiliary spare area is changed in an inner circumferential direction with respect to an outer circumferential area of the optical recording medium. The method of claim 22, And the recording capacity information indicates a recording capacity excluding at least the auxiliary spare area. An optical record carrier comprising a main spare area allocated in an inner circumferential direction, Recording capacity information displayed on a specific area of the optical recording medium, the recording capacity information includes variable recording capacity information, and the variable recording capacity information is information which varies depending on the presence of an auxiliary spare area, And a spare area is allocated on an outer circumferential area of the optical recording medium. The method of claim 24, And the recording capacity information indicates a recording capacity excluding at least the auxiliary spare area. A lead-in area comprising an embossed area and a recordable area, a data area for data to be recorded or reproduced, a lead-out area, and a main spare area and an auxiliary spare area on the data area, at least the data area Recording capacity information for indicating the recording capacity of the user area of the user area is recorded on a specific area, the recording capacity information is changed according to the existence or variation of the size of the auxiliary spare area, and the auxiliary spare area is present in the outer peripheral area. Or varying in the inner circumferential direction with respect to the outer circumferential region. The method of claim 26, And the recording capacity information indicates a recording capacity excluding at least the auxiliary spare area. A spare area including a user area and a juice spare area and an auxiliary spare area, wherein the main spare area is allocated on the inner circumference of the optical record carrier, and the auxiliary spare area is allocated on the outer circumferential area of the optical record carrier or A method for displaying a recording capacity of an optical record carrier extending in an inner circumferential direction from an area, Determining whether the size of the auxiliary spare area has changed during the formatting step or the recording mode; And recording the recording capacity information related to the user area in a specific area of the optical recording medium according to the determination result. The method of claim 28, And the recording capacity information indicates a recording capacity excluding at least the size of the auxiliary spare area. A spare area including a user area and a juice spare area and an auxiliary spare area, wherein the main spare area is allocated on the inner circumference of the optical record carrier, and the auxiliary spare area is allocated on the outer circumferential area of the optical record carrier or A method for displaying a recording capacity of an optical record carrier extending in an inner circumferential direction from an area, Reading recording capacity information related to a user area of the optical recording medium; Controlling recording or reproducing of data according to the read recording capacity information, And the recording capacity information indicates the changed recording capacity when the size of the auxiliary spare area is changed during the formatting step or the recording mode. The method of claim 30, And the recording capacity information indicates a recording capacity excluding at least the size of the auxiliary spare area.