ES2374867T3 - PROCEDURE FOR DEFECT MANAGEMENT OF A RECORDING SUPPORT. - Google Patents

Abstract

A method of and drive for recording medium defect management, and a defect managed recording medium. The defect management method includes: writing first state information that specifies that an update cycle of a temporary defect management structure (TDMS) is open when updating of the TDMS begins, the TDMS containing information regarding temporary defect management; updating the TDMS when data is written to or read from information storage medium; and writing second state information that specifies that the update cycle of the TDMS is closed, when the updating of the TDMS is completed.

Description

Defect management procedure of a recording medium.

Technical field

The present invention relates to a defect management procedure for a recording medium, a recording device and a recording medium for it and, more particularly, to a defect management procedure, in which they are recorded on the Recording support a primary temporary defect management area and a secondary temporary defect management area.

Prior art

Defect management is the process of rewriting data stored in a user data area of a disk in which there is a defect in a new part of the user data area, compensating for the loss of data caused by the defect.

In general, defect management is done by linear replacement or slip replacement. In linear replacement, the area of user data in which there is a defect is replaced by a spare data area that is free from defects. In the replacement of slip, the user data area with the defect is slipped and the next user area that is not defective is used.

However, both linear and slip replacement are only applicable to discs such as DVDRAM / RW, on which data can be repeatedly recorded and recording can be performed using a random access procedure.

In the case of single-write and multiple-access memory media (WORM) (hereinafter referred to as “single-write recording media”), the data cannot be rewritten in the same position, since the recording capacity of these Brackets is limited. Therefore, effective defect management is necessary, and many efforts have been made to develop a defect management procedure for single write recording media using a recording device.

Defect management for single write recording media is performed using a verification procedure after writing. More specifically, a recording device records data in specified units on a single write recording medium, and then verifies the recorded data to detect the position of the part of the media in which there is a defect. The device then records the data recorded in the part that has a defect in the replacement area. The device then creates a temporary defect list (TDFL) that describes the positions of the area that presents the defect and the replacement area that replaces the area that presents the defect, and creates temporary defect management information (TDDS) that specifies the recording position of the TDFL. The combination of TDFL and TDDS is called a temporary defect management structure (TDMS).

The device then stores the TDFL or TDDS created in memory and records the information stored in a Temporary Defect Management Area (TDMA) of the single write recording medium when the amount of information stored in the memory reaches a predetermined level . The TDMS is updated every time data is recorded on the single write recording media.

Single write recording media is terminated when no more data can be recorded on it or when a user does not want to record more data on it. During the completion of the single write recording medium, the TDMS most recently recorded in the TDMA is copied to a defect management area (DMA).

However, defect management performed by the recording device on a single write recording medium is suspended abnormally when the power supply of the recording device is interrupted due to an anomalous incident, for example a power failure. For example, the recording device may experience a power failure before recording a TDFL or a TDDS, created during the recording of data on the single write recording medium in a TDMA. In this case, the TDMS will not update correctly. In addition, when the single write recording media is recharged on the recording device after the power supply is restored, the device is not able to check whether defect management has ended abnormally or not.

WO-A1-2004 / 029941 discloses a method and an apparatus for recording management information on an information storage medium. The procedure includes recording, in a temporary defect management area, management information of whether the recording medium is being used or the disc is finalized. WO-A1-2004 / 029941 is cited exclusively for reasons of novelty.

WO-A1-2004 / 079740 discloses a method and an apparatus for recording a support of

recording of optical information comprising the recording of management information. The management information is recorded in a disk management area, such as a temporary defect management area, and records status information and update information. The recording status information is a space bitmap that indicates whether a recording operation is being performed for the default area of the disc. WO-A1-2004 / 079740 is cited exclusively for reasons of novelty.

Exhibition of the invention

The present invention provides a defect management procedure for single write recording media, during which the abnormal termination of defect management caused by an abnormal incident is checked, for example, without limitation, a power failure.

The present invention also provides a recording device that allows an easy check of the anomalous termination of defect management caused by an inevitable accident.

The present invention also provides an information storage medium in which the abnormal termination of defect management caused by an inevitable accident can be easily verified.

According to one aspect of the present invention, a defect management procedure is provided for an information storage medium, which comprises: writing information of a first status information specifying that an update cycle of a structure of information is opened. Temporary defect management (TDMS) at the start of the TDMS update, the TDMS comprising information regarding temporary defect management; TDMS update when data is written and read to the storage media; and writing information of a second status information that specifies that the TDMS cycle has been closed, when the TDMS update has been completed.

The first status information can be written in response to an open command of the TDMS update cycle or to a data write or read data command on the information storage medium.

The update may include reading the first status information based on the updated TDMS.

The second status information can be written in response to an eject command from the information storage medium.

According to another aspect of the present invention, a defect management procedure is provided for an information storage medium, the procedure comprising the following steps: writing a first status information, which specifies that a data update cycle is opened , on an area of an information storage medium when the data update is initiated during the writing or reading of data on an information storage medium; update of the predetermined data, which is generated when the data is data that is written or read in the information storage medium, writing data in the information storage medium; and writing in the area of a second status information, which specifies that the update cycle has been closed, when the information update has been completed.

Preferably, the first status information is written in response to a command to open the update cycle of the predetermined information.

Preferably, the first status information is written in response to a write / read command.

Preferably, the update comprises writing the first status information based on the information updated during the information update.

Preferably, the second status information is written in response to a command to eject the storage media.

Preferably, the second status information is written in response to a command to close the information update cycle.

Preferably, at first or second status information is contained in the information and is written during the update of the information.

According to another aspect of the present invention, a device is provided comprising: a captor that writes and reads data on a loaded storage medium; and a controller, which: controls the captor to write first status information that specifies that a temporary defect management structure (TDMS) update cycle is opened, in an area of the information storage medium, when it is started the

update of a TDMS containing information regarding temporary defect management; controls the captor to update the TDMS when data is written or read to the storage media; and controls the captor to write in the area a second status information that specifies that the TDMS update cycle is closed, when the TDMS update has been completed.

The controller can control the sensor to write the first status information in the area, in response to a TDMS update cycle opening command or a read / write command.

The controller can control the captor to write the first status information in the area based on the updated TDMS when the TDMS is updated during writing or reading data in the information storage medium.

The controller can control the captor to write the second status information in the area, in response to a command to eject the storage media or to a command to close the TDMS update cycle.

Preferably, one of the first and second status information is contained in the TDMS and is written during the TDMS update.

According to another aspect of the present invention, a device is provided comprising: a captor that writes or reads data on a loaded storage medium; and a controller that controls the captor to write first status information that specifies that an information update cycle is opened, in an area of the information storage medium, when the information update is initiated during data writing or reading data in the storage medium; controls the captor to update the predetermined data, which is generated when the data is written and read data in the information storage medium, writing the information in the information storage medium; and controls the captor to write in the second status information area, which specifies that the information update cycle is closed, when the information update has been completed.

Preferably, the controller controls the captor to write first status information in response to a command to open the information update cycle.

Preferably, the controller controls the captor to write the first status information in response to a command to write or read the data.

Preferably, the controller controls the captor to write the first status information based on the updated information when the information is updated during the writing of the data for reading the data in the information storage medium.

According to another aspect of the present invention, an information storage medium is provided comprising an input area, a user data area, an output area, in which a temporary defect management structure (TDMS) is written ) which contains information regarding temporary defect management and information on the status of the update cycle concerning TDMS, specifying information on the status of the update cycle if the update cycle of the TDMS is open or closed.

Preferably, the status information of the TDMS update cycle is contained in the TDMS.

The TDMS may comprise temporary defect management information (TDDS) and a temporary defect list (TDFL) and the status information of the TDMS update cycle is contained in the TDMS.

At least one TDMA can be formed in at least one of the following areas: input area, user data area, and output area, and the TDMS and the status information of the TDMS update cycle can be written in TDMA

According to yet another aspect of the present invention, an information storage medium is provided comprising information regarding the writing of data or the reading of written and generated data during the same; and update cycle status information that specifies whether an information update cycle is open or closed, and is written based on the information.

Preferably, the status information of the update cycle is included in the information and is written during the update of the information.

Preferably, the information is information relating to the management of defects that is created during the writing or reading of the data in the information storage medium.

Preferably the information storage medium is an information storage medium of

Unique writing or a rewritable storage media.

According to another aspect of the present invention, a method is provided for determining whether the recording of data on an information storage medium has ended abnormally due to an anomalous incident. The procedure comprises: reading the second status information that specifies that a TDMS update cycle has been closed, when the TDMS update has been completed. The first status information that specifies that an update cycle of a temporary defect management structure (TDMS) is opened is written when the TDMS update is started, the TDMS containing information regarding temporary defect management. The TDMS is updated when the data is written and read data in the information storage medium.

Preferably, the information storage medium is a single write information storage medium or a rewritable information storage medium.

Other different or additional aspects and advantages of the invention are described in part in the following description and partly will be apparent therefrom, or may be acquired through the practice of the invention.

Brief description of the drawings

These and other aspects and advantages of the invention will become clearer and more easily understood from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

Figure 1 illustrates a data structure of an individual recording layer of a single write recording medium, according to an embodiment of the present invention;

Figure 2 illustrates an example of a structure of information data recorded in a temporary defect management area (TDMA);

Figure 3 illustrates an example of a temporary defect management information (TDDS) data structure;

Figure 4 is a block diagram of a device that performs defect management on a single write recording medium, according to an embodiment of the present invention;

Figure 5 is a detailed block diagram of the device depicted in Figure 4;

Figure 6 illustrates states of a single write recording medium in which defect management is performed, according to an embodiment of the present invention; Y

Figure 7 is a flow chart illustrating a defect management procedure for an information storage medium, according to an embodiment of the present invention.

Best way to practice the invention

In the following, embodiments of the present invention will be described in detail, of which examples are illustrated in the accompanying drawings, designating similar references in all of them equal elements. The embodiments are described below to explain the present invention with reference to the figures.

This exhibition describes the management of defects according to various embodiments of the present invention with reference to a single write recording medium that is an example of information storage medium. However, it should be understood that other supports can be used.

Figure 1 illustrates a data structure of a representation of an individual recording layer of a single write recording medium, according to an embodiment of the present invention. With reference to Figure 1, the single write recording medium comprises an input area, a data area and an output area. The introduction area comprises a defect management area (DMA) # 1, a DMA # 2, a write status check area, a primary temporary defect management area (TDMA) and a device information area.

A spare area # 1, a spare area # 2, a secondary TDMA and a user data area are formed in the data area. In the output area, a DMA # 3 and a DMA # 4 are formed.

In general, a single write recording medium comprises DMA but does not comprise a temporary DMA (TDMA), while TDMA is additionally assigned to a single write recording medium, in addition to DMA, in consideration of the characteristics of this medium.

More specifically, in this case of a single write recording medium, data recording is not allowed in a position in which data has already been recorded. Therefore, when during the data recording it is necessary to update the information regarding a newly generated defect, a recording device reads the most recently recorded defect information and updates the current defect information by additionally recording the newly generated defect information in A new cluster For this reason, the higher the frequency of data recording on the single-write recording medium, the more defect information is accumulated and the greater this information becomes.

While, since a DMA formed in a conventional rewritable recording medium has a reduced recording capacity, the DMA can be used as an area in which defect management is performed. Therefore, a TDMA whose recording capacity is greater than the recording capacity of the DMA is additionally assigned to the single write recording medium.

The most recently recorded temporary defect management (TDMS) structure in the TDMA is recorded in the DMA during the end of the single write recording media. In this way, data recording on a single write recording medium is allowed using a recording device and the time spent on initializing the single writing recording medium is reduced.

Initializing a recording medium is a process of reading data in an input area or an output area and determining how to manage the recording medium and writing or reading data on the recording medium. Therefore, as the information recorded in the input area or the output area of a recording medium increases, the time spent in initializing the recording medium increases after loading the recording medium into a recording device . The search speed of data recorded in the DMA remains higher than the search speed of data recorded in a TDMA with a large recording capacity.

With reference to Figure 1, the single write recording medium comprises two TDMAs, that is, a primary TDMA and a secondary TDMA, in which the TDMS is recorded. As mentioned above, the TDMS contains a list of defects Temporary (TDFL) and temporary defect management information (TDDS). The TDFL specifies the positions of an area that has a defect and a replacement area that is the substitute for the area that has the defect, and the TDDS specifies the recording position of the TDFL.

The TDMS contains a space bitmap (SBM) that uses bit values to indicate whether data has been recorded in the clusters that constitute the entire recording area of the single write recording media, in addition to the TDMS and TDFL. The SBM can be recorded both in an additional cluster and in a cluster containing the TDMS.

The inclusion of a secondary TDMA in the data area is optional depending on the decision of the user or the device manufacturer. The reason why the inclusion of the secondary TDMA depends on the decision of the user or the manufacturer of the device is to allow the user / manufacturer of the disc to properly use the single-write recording medium.

Spare areas # 1 and # 2 are assigned to the data area during initialization of single write recording media when defect management is performed using the recording device.

Figure 2 illustrates an example of a structure of information data recorded in a TDMA. With reference to Figure 2, TDDS and TDFL are large in TDMA in cluster units. In the TDMA the area in which the TDDS is recorded and the area in which the TDFLs are recorded is not further divided, that is, they are recorded in the same TDMA space. Therefore, the respective TDDS and TDFL are recorded in at least one cluster unit in the sequence in which they are generated (N and k are enteror numbers greater than 1).

Figure 3 illustrates an example of a TDDS data structure illustrated in Figure 2. With reference to Figure 3, a TDDS # i (i is an integer greater than 0) specifies the position of a check area of the readable write status, the position of the TDFL # i corresponding to the TDDS # i, write protection information, an update count indicating the update number of the TDDS # i, the sizes of the replacement areas # 1 and # 2 assigned to the data area, indicator C_, etc.

As used in this detailed description, the C_ indicator symbolizes a "regularity indicator" that represents the this of a TDMS update cycle. The C_ indicator is described in detail below.

Although not shown in the figures, according to this embodiment of the present invention, the areas formed in the single recording layer of the single writing recording medium of Figure 1 are also included in a double recording layer of the recording medium. single write recording. In the double recording layer of the single write recording medium, an interior area # 0, a data area # 0 and an area are sequentially formed

outer # 0 in a first recording layer from the inner part to the outer part of that, and in the second recording layer an exterior area # 1, a data area # 1 and an interior area # 1 are sequentially formed from the inner part to the outer part of said second layer.

Accordingly, defect management can be performed in accordance with this embodiment of the present invention on a single write recording medium with a double recording layer. A primary TDMA of the second recording layer can be used when a primary TDMA of the first recording layer is full of data, and a secondary TDMA of the second recording layer is used when a secondary TDMA of the first recording layer is full. of data.

Figure 4 is a block diagram of a device that performs defect management on a single write recording medium, according to an embodiment of the present invention. With reference to Figure 4, the apparatus comprises a recording / reading unit 1, a controller 2 and memory 3.

The recording / reading unit 1 writes data to a single write recording medium 4 which is an information storage medium, and re-read the data from the single write recording medium 4 to verify the written data.

Controller 2 performs defect management on data recorded on single write recording medium 4 using a TDMA formed on single write recording medium 4.

In this embodiment, the controller 2 uses an after-write verification procedure in which the data is written to the single write recording medium 4 in specified units and the written data is verified to detect an area of the recording medium. single write 4 that has a defect. More specifically, controller 2 writes user data to single write recording medium 4 in specific units, verifies user data written to detect an area of single write recording medium 4 in which there is a defect, and creates a TDFL and a TDDS that describes the position of the area presenting the defect. Next, controller 2 stores the TDFL and TDMS created in memory 3. If the amount of information stored reaches a predetermined level, controller 2 writes the information stored in the TDMA of the single write recording medium 4.

Figure 5 is a detailed block diagram of the device shown in Figure 4, which performs defect management on a single write recording medium, according to an embodiment of the present invention. With reference to Figure 5, the single write recording medium comprises a captor 10 corresponding to the recording / reading unit 1 of Figure 4. A single write recording medium 4 is loaded into the captor 10. In addition, the The device comprises a controller 2 in which an I / F PC 21, a digital signal processor (DSP) 22, a radio frequency (RF) amplifier (AMP) 23, a servo 24 and a system controller 25 have been installed. A memory 3 is included in the system controller 25 of the controller 2.

During the write operation, PC I / F 21 receives data to be recorded and a write command from a server (not shown). The system controller 25 initializes the single write recording medium 4 required for the write operation. DSP 22 receives the data to be recorded from PC I / F 21; the error correction code (ECC) encodes the data by incorporating additional data, such as parity for error correction, into the data; and modulates the ECC encoded data using a specific procedure. The AMP RF 23 converts the data output of the DSP 22 into an RF signal. The captor 10 writes the RF signal output of the AMP RF 23 on the single write recording medium 4. The servo 24 receives a servo control command from the system controller 25 and performs the servo control with respect to the captor 10. In addition, to perform defect management during the write operation, the system controller 25 instructs the captor 10 to read the data of the single write recording medium 4 or to write information, for example temporary management information, on the support. Single write recording 4.

On the other hand, system controller 25 instructs captor 10 to write a TDMS comprising TDDS and TDFL, which is finally recorded in a TDMA, to terminate single write recording support 4 when a user command is issued or satisfy the default disk finalization conditions.

During a read operation, PC I / F 21 receives a read command from the server. System controller 25 performs the disk initialization required for the read operation. The captor 10 illuminates a laser beam on the single writing recording medium 4 and obtains and emits an optical signal from the reflected laser beam from the single writing recording medium 4. The RF amplifier 23 converts the optical signal output from the captor 10 in an RF signal, provides data modulated from the RF signal to DSP 22, and provides a servo signal for servo control, obtained from the RF signal for servo 24. DSP 22 demodulates the modulated data, performs the ECC encoding in demodulated data, and sends ECC encoded data. The servo 24 performs servo control at the sensor 10, in response to the servo signal output of the RF amplifier 23 and the servo control command output of the system controller 25. The I / F PC sends the received data from DSP 22 to the server. In addition, the system controller 25 may instruct the captor 10 to read information regarding defect management of the single write recording medium 4 during the read operation. System controller 25 manages

The whole system during the recording / reading operation.

Next, a defect management procedure for single write recording media is described.

The present invention introduces a regularity indicator (hereinafter referred to as C_ indicator) which is information that specifies a TDMS update cycle and the TDMS update cycle states to determine if defect management has been interrupted in a manner failed due to an anomalous incident while recording data on an information storage medium.

Figure 6 illustrates states of a single write recording medium on which defect management is performed, according to an embodiment of the present invention. With reference to Figure 6, a TDMS describes two states of the single write recording medium: a TDMS update cycle opening state having a C_ = '1' indicator, and a update cycle closing status of TDMS presenting an indicator C_ = '0'. The value of the C_ indicator is determined and recorded according to the status of the updated TDMS. When a single write recording media is loaded on a recording device and the C_ indicator, which is the status information regarding an updated TDMS is '1', the device considers that during the use of the recording media there has been an anomalous incident, for example a power failure, and therefore defect management has not been completed normally.

With reference to Figures 4 and 6, a defect management procedure for single write recording media is described in detail below, according to another embodiment of the present invention. First, when a single write recording medium 4 is loaded into a recording device (operation 10), the TDMS update cycle reaches a state 100. State 100 indicates that no data has ever been recorded on the device. single write recording support 4, or indicates that single write recording support 4 introduces the closed state of the TDMS update cycle that displays the C_ = 0 indicator that is finally recorded in the TDMS when data has been recorded and the Defect management has been carried out successfully.

If no data has ever been recorded on single write recording media 4, controller 2 records, in a first cluster of a primary TDMA, a C_ = 0 indicator and information that defect management is performed using the device. recording, during the initialization of the single write recording medium 4, the C_ indicator is recorded in the TDDS as mentioned above with reference to Figures 2 and 3.

According to this embodiment, a TDDS with a C_ = 1 indicator is recorded and the single write recording medium 4 introduces a state 110, so that the TDMS update cycle is opened in response to a server command or in accordance with a write / read operation (operation 20) and the single write recording medium 4 enter the state of open the TDMS update cycle.

Two cases of opening the TDMS update cycle are described below:

Opening the TDMS update cycle using a server command

When the single write recording medium 4 containing a final TDMS, more specifically, a TDDS recorded at the end with a C_ = 0 indicator, is loaded into the recording device, controller 2 receives an update cycle open command TDMS server (not shown). Next, the controller 2 controls the recording / reading unit 1 to record a TDDS with C_ = 1 indicator in the next TDMS position with respect to the TDMS recently recorded in the TDMA to indicate the status of open the TDMS update cycle . In this case, the value of the C_ indicator changes, but does not change any other information, for example a TDFL. Therefore, only a TDDS containing the changed C_ indicator is recorded in a new cluster.

Opening of the TDMS update cycle according to the write / read operation

When the single write recording medium 4 that has a TDDS recorded with the C_ = '0' indicator is loaded into the recording device and the recording or reading of the data is ready, the server issues a write / read command to the recording device and the recording device performs the write / read operation on the single write recording medium 4. If the TDMS needs to be updated during the write / read operation, controller 2 controls the recording / reading unit 1 to record a TDDS with indicator C_ = 1 in the next TDMS position with respect to the TDMS recently recorded in the TDMA to indicate the status of open the TDMS update cycle.

The TDMS is updated after the verification process after writing done once or several times, or after writing a predetermined amount of data. At this time, the TDMS is updated to include the C_ = 1 indicator and is recorded in the TDDS.

Similarly, the update defect management of a TDMS is also performed when it is determined that a cluster contains a defect during the reading of data from the single write recording medium 4.

After state 110 in which the value of the C_ indicator is recorded to be 1 and the TDMS update cycle is opened, a write / read operation (operation 30) is performed and a memory is created and saved in memory 3. new TDMS. For effective use of the TDMA, the controller 2 preferably performs the update of the TDMS by recording the TDMS in the TDMA only when the server issues a TDMS update command (operation 50). At this time, the TDMS is updated so that the C_ = 1 indicator is included in the TDDS.

State 120 indicates a disk status, that is, a TDMS update cycle opening state having a C_ = 1 indicator, in which the TDMS can be updated during the write / read operation (operation 30). In state 120, when the server issues a TDMS update command (operation 50), controller 2 updates the TDMS including the C_ = 1 indicator in the TDDS and the TDMS update cycle reintroduces state 100.

Once the TDMS update cycle has been opened in response to a command to open the TDMS update cycle issued by the server, or according to the write / read operation, an eject command is issued from the recording medium. single write 4 of the recording device or a command to close the TDMS update cycle (operation 40). Next, the controller 2 controls the recording / reading unit 1 to record a TDDS with the C_ = 0 indicator in the TDMA. However, the C_ = 0 indicator indicates the closing of the TDMS update cycle. When the TDDS with the C_ = 0 indicator is recorded in the TDMA, the single write recording medium 4 enters the state of closing the update cycle of the TDMS 130.

If the server issues a command to close the TDMS update cycle rather than a command to eject single write recording media 4, the TDMS update cycle enters state 130 and returns to state 100. In state 130, when the server issues a command to eject the single write recording media 4, the single write recording media 4 is ejected from the recording device (operation 70).

In state 130, if a user issues a single write recording support termination command 4, the controller 2 controls that the read recording unit records data such as "ffh" in a TDMA free space, preventing recording of data, such as a TDMS containing a TDDS, TDFL or an SBM, in the TDMA.

As mentioned above, according to this embodiment of the present invention, the C_ indicator indicating two states of the TDMS update cycle, ie the TDMS update cycle is open and the TDMS update cycle is closed, It is recorded in TDMS. Therefore it is possible to check if during the use of the single write recording medium 4 an abnormal incident, for example a power failure, has occurred in the recording device. If during the use of the single write recording medium 4 there has been a power failure in the recording device, the value of the C_ indicator indicating that the TDMS update cycle has been opened must finally be recorded in the TDMA,

TDMS is repeatedly recorded to increase the reliability of data detection. For example, during the TDMS update, the TDMS is repeatedly recorded in continuous TDMA clusters, or a new TDMS is recorded in a primary TDMA and a copy of the new TDMS is recorded in a secondary TDMA.

Until now, defect management has been described according to an embodiment of the present invention with respect to single write recording media. However, the type of storage media, in which defect management according to the present invention can be enhanced is not limited to this type of media. That is, defect management for an information storage medium according to the present invention, which uses an update cycle and cycle status information, is not limited to updating a TDMS of a single write recording medium.

As mentioned above, there is a case in which an anomalous incident occurs, for example a power failure, periodically or at any time during a read recording operation, when the recording device is recording generated information regarding the recording or reading data, on a loaded storage medium. In this case, the power supply to the recording device is interrupted and the recording of the information is abnormally discontinuous. According to an embodiment of the present invention, when the information storage medium is recharged in the recording device, the recording device determines the abnormal end of the recording of information in reference to the final status information of the cycle of upgrade.

Figure 7 is a flow chart illustrating a defect management procedure for information storage media, according to an embodiment of the present invention. The defect management shown in Figure 7 can be performed using, for example, the device shown in Figures 4 or 5. A defect management procedure for information storage media according to an embodiment of the present is described below. invention, with reference to figures 4 and 7.

First, in action 310 an information storage medium is loaded. In action 320, a cycle of updating specific information related to data recording or data reading is opened. In this embodiment, the information storage medium can be, as a non-limiting example, an optical recording medium such as a digital versatile disk (DVD), or a hard disk.

In addition, information related to data recording or data reading is information that is generated on an information storage medium during data recording or reading and requires subsequent recording on the information storage medium for reading data. the data. For example, the data may be defect information regarding the data area of the information storage medium. As mentioned above, the detected information is recorded on a TDMS formed on a single write recording medium or a DMA formed on a rewritable recording medium.

In this embodiment, the information update cycle is described as an open response to a command to open the update cycle or a write / read command issued by a server (not shown). However, it should be understood that the opening conditions of the update cycle can be set differently.

In action 330, when the information update cycle is opened, the controller 2 controls the recording / reading unit 1 to record status information of the update cycle in a predetermined area of the loaded storage media. The update cycle status information specifies the update cycle status using a regularity indicator. If the value of the regularity indicator is 1, the update cycle is open. If the value of the regularity indicator is 0, the update cycle is closed.

In action 340, controller 2 controls the recording / reading unit 1 to record or read data in the information storage medium.

In action 350, controller 2 creates the specified information that needs to be updated even if data has been recorded or read on the information storage medium.

In action 360, controller 2 determines whether the information update cycle has been completed or not. If it is determined in action 360 that the update cycle has not been completed, the defect management routine returns to action 330, the information created in action 350 is recorded on the information storage medium and re-recorded. the status information of open the update cycle on said support.

However, if it is determined that the update cycle has been completed, the information created in action 350 is recorded on the information storage medium and the status information of closed the information cycle is re-recorded on said media, in action 370.

When recording the update cycle status information in action 330 or action 370, it is preferable that the update cycle status information is incorporated into the information and the information is recorded on the information storage medium. If the status information of the update cycle is recorded first after loading the storage media, the recorded information is compared with the previously recorded information and the information is recorded in which only the cycle status information changes from update status to closed the update cycle to the status of open the update cycle.

As described above, the management of defects according to the embodiments of the present invention set forth allows a recording device to easily perceive the abnormal termination of data recorded on an information storage medium, caused by an incident such as the interruption of the power supply of the recording device due to a power failure, when the information storage medium in the recording device is recharged.

Although some embodiments of the present invention have been represented and described, the present invention is not limited to the described embodiments, but those skilled in the art will appreciate that changes can be made thereto without departing, therefore, of the scope of the claims.

Claims (1)

1. Defect management procedure for an information storage medium, in which a temporary defect management information (TDDS) is recorded that includes information on an update status of a temporary defect management structure (TDMS) , which comprises reading the temporary defect management information (TDDS) from an information storage medium loaded, which includes information on an update status of a temporary defect management structure (TDMS); and when the temporary defect management information (TDDS) includes information that specifies that the update status of the temporary defect management structure (TDMS) is "open", determine that the update 10 of the temporary defect structure (TDMS) has not been completed, and when the temporary defect management (TDMS) information includes information that the update status of the temporary defect management structure (TDMS) is “closed ”, Determine that the update of the temporary defect structure (TDMS) has been completed.