TWI374438B - Recording medium, read/write method thereof and read/write apparatus thereof - Google Patents

Description

1374438 IX. INSTRUCTIONS: This application claims priority from Korean No. 1 0-2004-0034022 and May 1 1 0-200 5-003 9933, which were filed on May 13, 2004, etc. This is incorporated herein by reference. [Technical Field] The present invention relates to a recording medium and control information thereof, and a method for recording read information relating to a version of a corresponding recording medium to control information, and a method for reading using a recorded control recording medium / Write method and device. [Prior Art] In general, a disc on which large-capacity data can be recorded has been made into an optical recording medium. Nowadays, many attempts have been made to open the splash of ^|| . V. ^ to the density optical recording medium (HD-DVD), which is painted on the medium.

-Len application 3曰The whole method, /Write control J information widely used in a new quality view Blu-ray (BD) is a custom-made specification of the regular frequency carrier · " ^ T leaf and audio quality data can be It is recorded and stored, such as ', 乃 (hereinafter referred to as BD) and the like. A next-generation optical recording solution for Blu-ray discs, a next-generation HD-DVD technology, that can store data far beyond the storage capacity of 〇ν〇. Moreover, the global standard technology for BD is established. Various standard recommendations for Blu-ray discs have been proposed. Clearly used for 2x (or higher speed) following lx rewriteable Blu-ray discs, write Blu-ray discs 1374438 (BD-R), and read-only Biu_ray discs (bd-R〇M) Various specifications of rewritable Blu-ray discs (BD-RE) have been prepared. Although it is the same series of Blu-ray discs, the version of the special-purpose valley for Blu-ray discs continues to be updated to follow the technology. Development. For example, the disc specification for a BluU-ray disc (BD_RE) can be extended as if it were & (or more speed) rewritable Blu_ray disc (BD RE). Therefore, it is necessary to manage the extended specification content to become the disc version information. However, when recreating the disc recording of the 13⁄4 version, 'even if it is impossible to read/write or even if an error occurs during the execution of the read/write, it is designed to be applied to the lower version of the read/write device depending on the extension of the disc version. Continue to try the read/write execution to cause a system error. SUMMARY OF THE INVENTION Accordingly, the present invention is directed to providing a recording medium and control information thereof that substantially excludes one or more of the limitations and disadvantages of the prior art. An object of the present invention is to provide a method of recording nest control information relating to a recording medium version into a specific information in a recording medium management area. Another object of the present invention is to provide a method and apparatus for using control information when performing a read/write of a recording medium. Additional advantages, objects, and features of the invention will be set forth in part in the description which follows. The object of the present invention and other advantages 6 374438

It is understood and obtained by the structure indicated in the written specification and the scope of the patent application and the drawings. To achieve these and other advantages, and in accordance with the subject matter of the present invention and as broadly described herein, a recording medium includes a management area in which read/write control information is recorded, wherein the control includes Corresponding to the version information of the recording medium, and the version information can be written into the compatibility version information and the read compatibility version information. In another feature of the present invention, a read/write method of a recording medium package includes a first step of reading a first compatibility version of a second compatibility version information from the recording medium; and a second step Determining whether the corresponding recording medium is compatible with the writing and/or reading of the recording medium, and if the reading and/or writing of the corresponding recording medium is compatible, performing the reading and/or the first compatibility The sexual version information is more specific than the second compatible version. In another feature of the present invention, a read/write method of the recording medium includes the steps of: reading a first compatible version information and two compatible version information from the recording medium; The compatibility determines the possibility of accessibility of the corresponding recording medium; determining whether to access the recording medium according to the determined result of the accessibility property; and determining the recording medium if the first compatibility version information is determined The second compatible version information determines whether the data can be written on the corresponding record, and determines whether to write the data according to the result of the corresponding decision, and the second compatible version information may have one in the first A compatible version of a variable value in a particular value. In particular, if there is a message that includes the information and the fact that it should be written, the first set of the correctness can be obtained from the media. 7 Γ 374438 In another feature of the present invention, a recording medium is read. The writing/writing method includes the steps of: reading read/write control information including writing compatibility version information from the recording medium; and writing compatibility version information from the reading to determine that the corresponding recording medium is compatible with writing Sexual possibility; if the write compatibility is in a bridge compatible state, then the write strategy information in the read control information determines whether writing at a particular speed is possible; and only in the decision The result is that the write is performed at the particular speed when the recording medium is compatible for the particular speed.

In another feature of the present invention, a recording medium read/write device includes a control unit that reads a first compatibility version information and a second compatibility version information from a recording medium, the control unit Reading the version information determines the possibility of writing compatibility and read compatibility of the corresponding recording medium, the control unit transmits a read and/or write command based on the result of the decision; and a read/write unit based on A read and/or write command from the control unit performs a read and/or write, wherein the first compatible version information is determined prior to the second compatible version.

In a further feature of the present invention, a recording medium includes a management area having read/write control information recorded thereon, wherein the control information may include version information of the corresponding recording medium, wherein the version information may include a a first compatible version information determining the compatibility of the writing and/or reading of the data, and a second compatible version information, wherein the second compatible version is maintained as long as the first compatible version information is maintained The information system can be changed. The previous general description of the invention and the following detailed description of the invention are intended to be construed as illustrative DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments embodiments The same reference numerals are used throughout the drawings to refer to the same or similar parts. Further, although the terms used in the present invention may be selected from the currently well-known terms, 'some terms are arbitrarily selected by the applicant in some cases' and thus their meanings are explained in detail in the following description. Therefore, the present invention should be understood by the meaning of the corresponding terms selected by the applicant, not only by the simple names or meanings of the terms themselves. The "recording medium" in the present invention includes all types of material recordable media such as a compact disc, a magnetic tape, and the like, regardless of its recording mechanism. For the convenience of the description of the present invention, a Blu-ray disc (BD) is adopted as a typical example of a disc. However, it should be understood that the technical concept of the present invention can be applied to other recording media in the same manner. "Control Information j refers to information on various types of plows, which are used for disc reading/writing of Blu-ray discs, and are equivalent to, for example, writing "discs" in specific areas of Blu-ray discs (BD). Slice information J, or write "Entity Format Information" in dvd_ram/-rw/ + rw. First, for the sake of convenience, the following explains the case of "Disc Information (hereinafter referred to as DI) corresponding to Blu-ray Disc (BD). However, it should be understood that the concept of the present invention is applicable to discs (e.g., DVD series) in other different formats that are used in the same manner for the same concept. The present invention relates to a method of recording j/4438 information on a read/write control of disc version information. The video version information will be explained first, and a method for writing the disc version information in the Biu_ray disc as "Disc Information (DI) J for controlling information will be explained in detail later. First of all, 'About the above mentioned "Disc version information", each new specification item is based on the same series of disc technology development when the new disc version is added" and the disc author records in a specific area which version of the corresponding disc is prepared. Information, so the read/write device (shown in Figure 7) for the read/write of the corresponding disc will query the disc version information written in the disc for reading/writing. The features of the present invention are Recording disc version information becomes control information (such as 'Disc Information (DI)) 'The disc information is recorded as specific information that can be recognized between a disc and a read/write device. Moreover, the present invention is characterized in that the disc version information is used to perform effective read/write control between read/write devices and discs of different versions from each other. Figs. 1 and 2 show the structure of a compact disc applied to the present invention. Figure 1 shows a single layer recordable Blu-ray disc (BD-RE/R) with a recording layer. And Fig. 2 shows a single-layer read-only Blu-ray disc (BD-ROM) having a recording layer. Fig. 1 is a block diagram of a single layer disc having a recording layer in accordance with the present invention. The disc information (Di) of the Blu-ray disc (BD) is written as control information in the disc. Referring to Fig. 1, a lead-in area is provided as a management area ′ on the inner circumferential area of the optical disk of the present invention, and a 丨 area is formed as a management area provided on the outer circumferential area of the optical disk. Specifically, the pre-recorded ^ 10 Γ 374 438 domain and a rewritable or write-sub-region are separated from each other within the inner circumference of the disc. The pre-recorded area is an area in which the data has been recorded while the disc is being manufactured, so that the user or the system is completely unable to perform data recording in the pre-recorded area. Specifically, in a Blu-ray disc (BD), the pre-recorded area is referred to as a PIC (Permanent Information and Control Data) area. Disc information (such as information required for disc recordings and the like) is recorded in the PIC area. However, the disc information (DI) of the present invention need not exist in the PIC. It should be understood that the disc information can be recorded in another management area.

Set in a data area is a user data area where the user's real data is recorded; and the spare area ISA and OSA are used to replace an area where defects have occurred. Specifically, a TDMA (Temporary Defect Management Area) for recording defects and general management information is placed in a management area such as a BD-R write-once disc. In the case of a rewritable BD-RE, the TDMA system does not have to be maintained as a reserved area. Fig. 2 is a structural view of a single-layer CD-ROM having a recording layer in accordance with the present invention for explaining the position of the disc information DI written in the present invention.

In the case of a disc-only disc, the entire area of the disc is provided with a pre-recorded area. The disc information DI relating to the present invention can be written into the PIC area of a lead-in area, which is the same as the one written once in the first figure. The present invention (as mentioned in Figures 1 and 2) is intended to provide a method of efficiently writing read/write control information relating to the disc version of the present invention, and a recording speed for reading/writing. Information and write strategy (hereinafter referred to as WS) information such as the method of disc information (DI) recorded in the pre-recorded area. The method of writing the third invention &gt; _ third solid disc information (DI) will be described in detail later. The knot of the patterning country in the PIC area in the disc shown in Figure 1 or Figure 2 refers to Figure 3, which shows the best, "In a Blu-ray disc, "a cluster" J, S The Green Army - an upper recording unit 疋 ' 544 clusters aggregated to form a fragment into a plaque and all 5 fragments aggregated to form a Pic region. Page Di Di from the ^ disc information, recorded in the first cluster of the first fragment IFO. 1 is the pair of papers on the mother's record layer and the speed allowed by the corresponding disc. ,8, foot~ words, the machine disc information DI can include 112 bytes. Clearly box. In addition, the disc information is occasionally called a disc information (DI) message fragment - the same content of the information DI is repeatedly recorded in the rest is only a month of g. In the readable record disc shown in the flute, _ brother 1 picture, the corresponding recording layer and the recording speed 〈t < information and corresponding to the recording layer The speed write strategy (WS) information, as well as the disc version information 'is recorded on each disc of the recordable disc 〇ΐ φ ^ y . Therefore, this information is used for the corresponding read/write of the optical disc, thus making effective read/write possible. But because it can't be in the flute. The writing operation in the CD-ROM shown in Fig. 2, the recording of the disc, the *, the recorded speed information and the write strategy (ws) information will not be included in the disc information DI. A method of recording read/write control information relating to a disc version of the present invention will be explained in detail below by referring to various embodiments of the 4A5 to 4th. For ease of explanation, a recordable disc is used as an example. 12 Γ 374438 However, as mentioned in the previous description, this method can also be applied to a read-only disc in the same way. 4A and 4B are diagrams showing a method of writing disc information (DI) into control information in an optical disc according to a first embodiment of the present invention. One of the areas for recording read/write control information is in the area. Distributed separately. That is, a region for recording at least one disc information DI is set in a disc, and the order of the disc information DI is determined according to the serial number to be recorded by one tuple. For example, the corresponding information recorded at the 5th byte in the disc information DI is called "DI frame serial number of the di block" and is briefly composed of r 〇〇h, 〇lh, 〇2h, ..." said. That is, if the information of the 5th byte is r〇〇hj, it represents the first disc information. If the information of the 5th byte is "〇3h", it means that the fourth disc information 0 and the write speed (WS) information interoperating with the recording speed indicated by the corresponding disc information DI are based on the disc information. The first (L~1 1 1) byte of di is recorded in an area called the "write strategy parameter" field, and the read/write control information is obtained by the nth byte of the disc information Di. The record is in a field called "Read/Write Operation Control". The "Read/Write Operation Control" block is divided into two parts, in which the "recordable version number" is recorded in the first four bits, and the last four bits are assigned - for compatibility with The sexual type number is in the area. The "Read/Write Operation Control" field is explained in detail below. The main version information of a corresponding disc is obtained by using the "recordable version number" table in the "Read/Write Operation Control" shelf. For example, 13 1374438

If the disc corresponds to version l.xx (Vl.xx), it is expressed as "version mas = 〇〇〇 1". If the disc corresponds to version 2.XX (V2.XX), it is expressed as "version number = 〇〇1〇". Moreover, if the disc corresponds to the version 3-Xx (V3.xx)', it is expressed as "version number = 00^". Therefore, if a disc of a version other than "version number=〇〇1〇(V2.XX)" is loaded into a lower version (VI.XX) read/write device, the version of the read/write device is It should not be recorded on the higher version disc that has been loaded. Therefore, in the case of loading a higher version disc, the read/write device writes the corresponding disc version information in the "recordable version number (version number)" column of the loaded disc, and does not use it. In the access operation of the corresponding disc month, the user and the like are immediately notified, and the corresponding disc system is unrecordable. The 凟/write device is allowed to perform writing on the corresponding disc only if it has an allowable write version. Moreover, the device disc information DI reads the corresponding control information. ...................Read phase

The meaning of the word "Ma" (which refers to the information of 屮B Γ ^ ^ _ 重 疋 破 破 破 破 允许 允许 允许 允许 允许 一 一 一 一 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取 读取Is prohibited. Therefore, the read-write 5 is also confirmed to write the version information of the disc corresponding to the factory-style plastic number written in the disc, and is not applied to the corresponding disc Μ ^ $ Β &amp; 仃 write access operation, and It is immediately said that the "two-way back should correspond to the disc system is not recordable. That is, the S-phase 4 type number" preferably has the following restrictions and the same version of the version information (version number), "number" The value of the white type will be the same as that of the white type. The value of the 14#374438 grain type number is unchanged but remains the same. For example, it means that in the same recordable version information (version number = 001 1) indicating version 3. XX, 'each disc "read compatibility type number" is not allowed to have a different value "0001" or r 〇〇 1〇".

In other words, if the read compatibility information (read compatibility type number) becomes "0001" or "〇〇", the version information can be read by using the read compatibility information. One of the sex type numbers is a reference, representing the same recordable version number ("version number = 00 11") indicating the version 3 · χχ (ν3.χχ, x: 〇 to 9). That is, the read compatibility information (read compatibility type number) should be determined before the version information to determine compatibility, and especially in reverse compatibility. Moreover, the version value can be changed as long as the read compatibility information value is maintained. The method for determining compatibility will be explained with reference to Figures 8 and 9. Figure 4B provides a "read compatibility type number" that additionally illustrates the same embodiment of Figure 4A.

That is, in Figure 4A, if the recordable version information (version information) corresponds to "0001" (VI.XX) or "〇〇1〇" (V2.XX), the same read compatibility information (read) The phase valley type number = 〇〇〇〇) is applicable. However, in Figure 4B, if the recordable version information (version information) corresponds to "〇〇〇1" (νι χχ) or "0010" (V2.XX), the compatibility information is read (read compatible) Sex type number = 0000) and readable compatibility information (read compatibility type number = 0001) can be applied separately. However, as shown in FIG. 4A or 4B, the recordable version information (version information) is represented only by the higher version information (V1 xx, V2.xx, V3.xx, ...) 15 1374438. Confusion can occur in the Bridge Compatible Status if it is not possible to record this information only with this information. That is, 'in version ll (Vi.l) is the 1X/2X recording standard and if the standard for supporting the new 4X speed standard cannot meet the full lx~4 speed, 'bridge compatible state' means to adjust the version 2.0 (V 2.0) is 2 X/4X speed and by making 2X compatible with version ll (Vl.l) standards, 2 χ is partially compatible and IX speed is incompatible.

Therefore, in the case of "bridge compatible state", it is not possible to completely determine "write prohibition", but to make a partially compatible portion recordable. For this, if read compatibility is maintained in the design read/write device, the read/write device reproduces the disc information (DI) to read the recording conditions of each speed (eg, write X-in strategy, write Strategy parameters, etc.), and determine that the speed is ~ goods written. After that, reference will be made to the eighth illustration. Fig. 5 is a diagram showing the method of writing the light information (DI) into the control information in accordance with the second embodiment of the present invention, wherein the _ ', the disc π is recorded separately in the area in which the information is recorded.冩 control

At least one disc information DI is recorded in -, and the order of each disc information DI is determined by the number of the discs in the disc. For example, the information corresponding to the $ ° recorded in the disc information Di is called "the number of the DI frames in the DI block is simply represented by "00h, 〇lh, 〇2h,..." . That is, if it is now, and the information of the tuple is "瞧", it means that the information of the first disc information called the second 5th digit is "〇3h", which indicates the fourth disc information. 5 In the disc information DI (LS 1U) bit 苟 写入 "write policy 16 1374438 / slightly parameter" block. Further, the write strategy (WS) information which is interoperable with the recording speed indicated by the corresponding disc information DI is recorded in the "write strategy parameter" booth. The Nth byte is called "disc version number (write compatibility)" paste bit" and the write control information of the read/write control information of the present invention is recorded in the "disc version number (write phase) Capacity)" in the block. Moreover, the N+1th byte is referred to as a "read compatibility type number" field, and the read control information of the read/write control information of the present invention is recorded in the "read compatibility type number". In the field.

That is, 'Compared with the first embodiment (4A, 4B) according to the present invention, 'the disc version number (write compatibility) is extended according to the second embodiment (Fig. 5) of the present invention. Field 'to indicate a lower version and a higher version. The "Disc Version Number (Write Compatibility)" field is divided into two parts. The "Souther Version Information (1st Edition Information)" is recorded in the first four digits, and the "Lower Version Information" ( The second edition of the information) is recorded in the last four digits.

In the case of version 1·0 (ν 1.0), the "Disc version number (write compatibility)" field is set to "000 1 0000". In the case of version 1 1 (V1丨), the "Disc version number (write compatibility)" field is set to "〇〇〇1 0001". In the case of version 3. KVLDi, the "Disc Version Number (Write Compatibility)_1 field is set to "0011 0001". With the above definition, the disc version can be correctly pointed out. Moreover, the read/write device can enhance its confidence when the reference version information determines a write possibility. 17 1374438 However, in the second embodiment of the present invention and the first embodiment, "reading the compatibility type number" It is best to have the above restrictions. That is, when the higher version information of the recordable version information (version number) is similar, the value of the "read compatibility type number" is unchanged but remains the same.

Figure 6 is a diagram showing a method of recording disc information (DI) of a disc as control information according to a third embodiment of the present invention, wherein an area for recording read/write control information associated with the disc version information is maintained at Compatibility with the disc information (di) recording method in the IX recordable Blu-ray disc (BD-RE) currently under discussion. Referring to Figure 6A, the 11th tuple in Disc InfoDI is called "Disc Size/Version" Blocker, which is used to record disc size information and version information. "Dimensional Information" is recorded in the first two bits b7 and b6. '"Read compatibility type number" is recorded in the next two bits b4' and "recordable version information (version number (write compatible) The sex system is recorded in the third group of four bits b3 to bO.

The Blu-ray disc (BD) currently discussed has only a size of n cm. Therefore, if the disc size information corresponds to "〇〇bj, it means 12 cm. And the rest is reserved for the reserved area of the standard disc size (such as 8 cm). If the 11th bit The group system is set to "00 00 0001b", which means that the size of the film is 12 cm, that is, the "read compatibility type number type system" and the recordable version information (version number) becomes "〇" 〇〇丨". In the third embodiment of the present invention (Fig. 6), the restriction condition for reading the compatible information (reading the compatibility type number) is in the same recordable version of the file "18"/4438 (version number). Have the same value. In order to solve the problem of the bridge-compatible state, when designing a read/write device, the final readable possibility should be determined by referring to other information (such as recording speed information, etc.).

Figure 6 shows an example modified from Figure 68, in which the block name is partially changed. That is, the "read compatibility information (read compatibility = type number)" in Fig. 6 is changed to "read compatible version information (read compatible version number)_), and "write" The compatible version information (version number) is changed to "write compatible version information (write compatible version number)". Therefore, it is obvious that the above modifications can be developed into various name modifications. For example, in the figure 6 "Read compatibility information (read compatibility type number)" is simply changed to category information (category)" and "write compatible version information (version number)" Can be modified to "Version Information (Version)". In this case, the category information (category) becomes the information indicating that the compatible disc version is read and the version information (version) becomes the information indicating that the compatible disc version is written.

&quot;, a diagram of a 冩 叨 哚 的 参考 冩 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考/ write; and read the 'control unit 20'. The control unit 20 provides a read or write command for a specific area and the read/write command performs a read/write on the specific area in accordance with the control unit 2. If the month is 0, the 碛/write unit 10 includes an interface unit 12 that communicates with an external device; - the pickup unit A 11, which is directly on the optical disc. The data is read or the data is read. Unit! 19 Γ374438

Receiving a read signal to store a desired signal value, or modulating the signal to be recorded as a signal to be written on the optical disc; a server unit 14 that correctly reads the signal from the optical disc, or controls The pickup unit is configured to correctly record signals on the optical disc; a memory 15 for temporarily storing data and various types of information including management information; and a microcomputer 16 for controlling the above-mentioned elements in the read/write unit 10. In addition to the read/write device, a display device 30 can be provided which displays a signal read by the read/write unit 10 or via the control unit 20 for information to the end user. Figs. 8 and 9 are flowcharts respectively applicable to the optical disk read/write method of the present invention. Figure 8 prioritizes the presence or absence of write compatibility, while Figure 9 confirms the occurrence or non-occurrence of write compatibility after the occurrence or non-occurrence of read compatibility is completed. Referring to Fig. 8, once the optical disc is loaded into the read/write device, all information on the disc is read out for temporary storage in the memory of the read/write unit 10. Moreover, the management information is used for reading/writing of optical discs. Specifically, the management information stored in the memory 15 includes the read/write control of the present invention. For example, read/write control information is provided as a disc. Information (DI). Then, the microcomputer 16 determines the occurrence or non-existence of the read/write compatibility in the following manner, and the read/write control information can be read as various as explained in the first to third embodiments of the present invention. Name information. It is possible to determine from the category information whether or not the currently loaded disc is recordable (S11). Specifically, in step S11, it checks that the recordable case is in the "bridge compatible state" (S30), and the write compatibility decision (S20). The delivery unit 11 saves the acknowledgment of the acknowledgment. 15 374 438. Therefore, if it is determined in step S11 that the optical disc is unrecordable, the read/write device prohibits further recording (S40). If the read compatibility information (read compatibility) determines the read rate, the read will only be performed on the corresponding disc. Moreover, if it is determined in step S11 that the optical disc is recordable and not in the "bridge compatible" state, it corresponds to making normal recording feasible. Therefore, the read/write device can perform recording by referring to the write strategy information (write strategy, write strategy parameter, etc.) in the disc information (DI) (S80).

In addition, if it is determined in step S11 that the optical disc is recordable and in a "bridge compatible" state, the read/write device confirms whether it is compatible in reading from the read compatibility information (read compatibility). In the state (S 5 0). In the case of read compatibility, the writing conditions for each speed in the disc information (DI) are determined to again determine the possibility of writing compatibility at the corresponding speed (S60 'S70) ° As a result of step S70, if it is determined that the write compatibility is possible, the read/write device performs normal writing. If it is determined that write compatibility is not possible (S40), the read/write device prohibits access to the data for writing, thereby preventing system errors that may result from disc errors or improper write attempts.

Referring to Fig. 9, once the optical disc is loaded into the read/write device, all information in the disc is read out for temporary storage in the memory 15 of the read/write unit 1 . Moreover, the management information is used for reading/writing of a disc (S110). Specifically, the management information stored in the memory 15 includes the read/write control information of the present invention. Specifically, read/write control information is provided as disc information (DI). After that, the microcomputer determines the presence or absence of read/write compatibility in the following manner. 21 Γ 374438 First, in the "read compatible information (read compatibility)" in the read control information, it is checked whether or not the reading of the corresponding disc is possible (S120). If the reading is not possible, access to the data area in the loaded disc is prohibited, and the writing is also prohibited (S121). If it is possible to read the compatibility in step S120, it is checked whether or not the writing of the corresponding disc is possible from the "write compatible information (write compatibility)" in the read control information (S130).

Specifically, in step S130, it is determined whether the write compatibility case is in the "bridge compatible" state (S132), and whether the write is compatible as needed (S 13 1). Therefore, if it is determined in step 131 that the optical disc is not write compatible, the read/write device prohibits further writing and allows read only (S 140). If it is determined in step S131 that the optical disc is written to the compatible optical disc and it is determined in step 132 that the write compatibility case is not in the "bridge compatible" state, the read/write device determines that it is compatible with normal writing to refer to the disc information. The write strategy information (write strategy, write strategy parameters, etc.) in (DI) and the like perform normal write (S170).

If it is determined in step S131 that the optical disc is write compatible, and if it is determined in step 133 that the write compatible case is in a "bridge compatible" state, the read/write device is for disc information (DI). Each of the speed check write conditions (S150), and again determines whether the write compatibility at the corresponding speed is possible (S160). According to the result of step S160, if it is determined that the write compatibility is possible, the read/write is possible. The device will perform normal 22 Γ 374438 write (S 1 70) with reference to the write strategy information in the corresponding DI. If it is determined that write compatibility is not possible, the read/write device prohibits writing on the disc, but allows read only (S 140). Therefore, the read/write device helps to confirm the possibility of reading and/or writing of the corresponding disc from the read/write control information of the loaded disc, thereby preventing system errors that may occur from abnormal read/write attempts. .

Moreover, if a notification is received from the microcomputer 16 indicating that normal reading and/or writing of the loaded disc is not possible, the control unit 20 preferably notifies the user via the display device 30 of a posting message, read and/or as needed. Or writing is impossible. Those skilled in the art will recognize that various modifications and changes can be made without departing from the spirit and scope of the invention. Therefore, the present invention is intended to cover the modifications and variations of the present invention as long as it is within the scope of the appended claims. [Simple description of the map]

The accompanying drawings, which are included in the claims In the drawings: Figure 1 is a structural view of a single-layer disc in accordance with the present invention; Figure 2 is a structural view of a single-layer CD-ROM in accordance with the present invention; A diagram of a management area for controlling information, wherein control information is written into a corresponding area; and FIGS. 4A and 4B are diagrams of a method of writing control information according to the first embodiment of the present invention; 23 Γ 374438 5th FIG. 6A and FIG. 6B are diagrams showing a method of writing control information according to a third embodiment of the present invention; FIG. 7 is applicable to a method for writing control information according to a second embodiment of the present invention; The drawings of the optical disk read/write device of the present invention; and the eighth and ninth drawings are flowcharts applicable to the optical disk read/write method of the present invention.

[Main element symbol description] 10 Read/write unit 11 Picker unit 12 Control unit 13 Data processor 14 Servo 00 —- Early 兀 15 Memory 16 Microcomputer 20 Control unit 30 Display device

twenty four

Claims (1)

Γ 374438 X. Patent Application Range: 1. A recording medium, the recording medium comprising at least a management area having read/write control information recorded therein, wherein the control information includes a first compatibility version information and a second Compatibility version information, the first compatibility version information is used to determine an access possibility for writing and/or reading data, and the second compatibility version information is used to determine the write The first compatible version information indicates a possibility of the data in the version, and the first and second compatible version information is arranged in one of the byte information in the control information. 2. The recording medium of claim 1, wherein the value of the first compatible version information is increased by setting a new version of the recording medium that is incompatible with a previous version of the recording medium. 3. The recording medium of claim 1, wherein the control information further includes size information, and the size information is used to indicate the recording medium. 4. The recording medium of claim 3, wherein the size information indicates that one of the recording media has a diameter of 12 cm. 5. The recording medium of claim 1, wherein the recording medium is one of a CD-ROM, a rewritable disc, and a write-once disc of 25 Γ 374438. 6. The recording medium of claim 1, wherein the control information further comprises recording speed information, wherein the recording speed information is used to indicate a recording speed and write strategy information, and the write strategy information is used for Indicates a write strategy for writing or reading data. 7. The recording medium of claim 6, wherein the control information comprises a serial number of a control information group associated with the recording speed or the write strategy information. 8. The recording medium of claim 1, wherein the management area in which the first compatibility version information and the second compatibility version information are recorded is a pre-recorded area. 9. The recording medium as claimed in claim 8 wherein the pre-recording The recorded area has a wobble pattern. 10. A method for reading/writing a recording medium, the method comprising at least the following steps: a first step of reading version information from the recording medium, wherein the version information includes a first compatibility version information and a first Two compatible version information, the first compatibility version information is used to determine an access possibility for writing and/or reading data, and the second compatibility version information is used to determine 26 ^ 374 438 writing a possibility of entering data in a version indicated by the first compatibility version information, the first and second compatibility version information being ranked in one of the byte information in the version information; And a second step, based on the version information, determining whether the data can be written on or read from the corresponding recording medium, wherein the first compatible version information is compared to the second compatible version Information is prioritized. 11. The read/write method of claim 10, wherein the first step comprises a step of reading size information for indicating a size of a corresponding recording medium from the recording medium. 12. The read/write method of claim 11, wherein the second step comprises at least: a step (2-1) of determining whether an optical pickup is based on the first compatibility version information It is possible to access the corresponding recording medium; and Φ a step (2-2), when the decision result in the step (2-1) is possible to access the recording medium, 'based on the second compatibility version information One of the materials is written to the possibility. 13. The read/write method of claim 12, further comprising a third step of determining the data writing system based on the second compatibility version information in step (2-2) When it is not possible, a specific write condition is determined according to a specified control resource 27 374 374, wherein if the specific write condition is met in the third step, the data write is performed. 14. The read/write method of claim 13, wherein the control information comprises writing policy parameter information. 15. A method for recording information on a recording medium, the method comprising the steps of: providing version information, wherein the version information includes a first compatibility version information and a second compatibility version information, The first compatibility version information is used to determine an access possibility for writing and/or reading data, and the second compatibility version information is used to determine the information written by the first compatibility version. A possibility of indicating data in one of the versions, the first and second compatible version information is arranged in one of the byte information in the version information; and the version information is recorded on the recording medium. 16. The method of claim 15, further comprising the step of recording size information for indicating a size of a corresponding recording medium on the recording medium. 17. The method of claim 16, wherein the size information is recorded in the byte information in the version information. The method of claim 17, wherein the size information, the first compatibility version information, and the second compatibility version information are individually determined by the byte information. Bit, 2-bit and 4-bit representation. 19. A device for writing/reading data to/from a recording medium, the device comprising: a memory system configured to store version information, wherein the version information includes a first compatibility version information and a second compatibility version information, the first compatibility version information is used to determine one The possibility of accessing for writing and/or reading data, the second compatible version information being used to determine a possibility of writing data in a version indicated by the first compatible version information The first and second compatible version information is arranged in one of the byte information in the version information; An optical read/write head configured to write data onto or read data from the recording medium; and a controller operatively coupled to the memory And the optical read/write head configured to read the version information from the memory, and based on the read version information, determine whether it is possible to write data on the recording medium or read from the recording medium data. A recording medium read/write device, the device comprising at least: an optical read/write head configured to read/write a material from/to the recording medium; a control unit operatively coupled to the optical pickup and configured to control the optical pickup to read version information from the recording medium, the version information including a first compatible version information and a Second compatible version information, the first and second compatible version information is arranged in one bit of the group information, and the control unit is configured to be based on the read version The information determines whether the data can be written to or read from the recording medium, wherein the first compatible version information is used to determine an access possibility for writing and/or reading data. And the second compatibility version information is used to determine a possibility of writing data in a version indicated by the first compatibility version information. 21. The device of claim 20, wherein if the result of the decision is that it is impossible to write data on the recording medium or it is impossible to read data from the recording medium, the control unit outputs a A control signal indicating the impossibility of the read/write compatibility. The device of claim 20, wherein the control unit is configured to determine whether the optical pickup is likely to access the corresponding recording medium based on the first compatibility version information, and may When the recording medium is taken, it is determined based on the second compatibility version information whether it is possible to write data on the recording medium. 30 1374438 23. The device of claim 22, wherein the control is configured to further determine that a designated control information is correct when the data is not written based on the second compatibility version information. The previous version exists in the recording medium, and if the controlled information exists in the recording medium, the data is written on the recording medium based on the designated control. 24. The device of claim 23, wherein the control further comprises recording speed information, the recording speed information is used for indicating speed and writing strategy information, and the writing strategy information is used for writing Policy for reading or writing data. The device of claim 24, wherein the control comprises a sequence number of a control group associated with the recording speed or the information written to the policy. 26. The device of claim 23, wherein the control is configured to control the optical read/write head to write data to the record based on a write strategy parameter included in the controlled information. on. 2 7. The device of claim 20, wherein the control unit may specify a funding information, a message, an information unit, a designated media unit 31 Γ 374438, configured to be further read for Size information indicating the size of one of the recording media. 28. The device of claim 27, wherein the size information is recorded in the byte information in the version information. 29. The device of claim 28, wherein the size information, the first compatibility version information, and the second compatibility version information are individually determined by the 2-bit information in the byte information. , 2 bit and 4 bit representation. 30. A device for reading/writing data from/to a recording medium, the device comprising: an optical read/write head configured to read/write data from/from The recording medium; and a control unit operatively coupled to the optical pickup and configured to provide version information and to control the optical head to write the version information to the recording medium, wherein the version information includes a a compatibility version information and a second compatibility version information, the first compatibility version information is used to determine an access possibility for writing and/or reading data, the second compatibility The version information is used to determine a possibility of writing data in a version indicated by the first compatibility version information, the first and second compatible version information series 32 1374438 Placed in one of the byte information in the version information. 3. The device of claim 30, wherein the control is configured to provide size information for indicating the size of the recording medium, and controlling the optical pickup to write the size information associated with the And second compatibility version information. 3. The device of claim 31, wherein the control is configured to write the size information in the bit information in the version information. 3. The device of claim 3, wherein the control is configured to write the size information, the first compatibility version information, the second compatibility version information, and the bit is individually The tuple information is represented by a bit, a 2-bit, and a 4-bit. One foot more than the first system tuple system and the 2 33 Γ 374438 VII. Designated representative map: (1) The designated representative figure in this case is: Figure 4A. 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