JP4196799B2 - Recording apparatus and method, program, data transmission / reception system and method, and program - Google Patents

Description

The present invention relates to a recording apparatus and method, and a program and, data transmission and reception system for transmitting and receiving data between recording devices are a plurality connected via a network for recording data on a recording medium body unique ID number is recorded And a method and a program.

  When data is transmitted / received via a network, data may be freely transmitted / received with an unspecified person, or data transmission / reception may be permitted only with a specific person. Among these, the latter performs setting of a password etc., for example, in order to distinguish between a specific person and those who are not, and performs transmission / reception of data between specific persons.

  For example, a plurality of devices are connected via a network, and a unique ID number of a target device and a user password permitting access are set in advance between accessible devices. A system has been proposed in which when a device is accessed, a unique ID number and password of the device are authenticated, and access is permitted according to the authentication result (see, for example, Patent Document 1).

  However, if the password to be set is complicated, there is no fear that it will be known to others, but the party may forget it, and if an easy password is set so that the party does not forget, It will be easily known to others and will not function as a password. In addition, setting a password or the like requires a great deal of effort.

JP 2003-85145 A

  The problem to be solved is that data can be transmitted / received to / from only a specific person without requiring complicated work for the user.

Further, in order to solve the above problems, the recording apparatus according to the present invention records predetermined content data and authentication data used for authentication when transmitting and receiving the content data in accordance with a predetermined file system. A mounting means for mounting a recording medium having a first area and a second area in which an ID number unique to the recording medium itself is recorded, and a first recording medium mounted on the mounting means. A first reading means for reading an ID number unique to the recording medium itself from the two areas, a storage means in which identification information unique to a predetermined device is written, and a second reading means for reading the identification information from the storage means and reading means, after the read unique ID number on the recording medium itself in the first reading means, one recording medium from the mounting means is withdrawn, mounted another recording medium to said mounting means When the unique ID number on a recording medium itself read from one recording medium by the first reading unit to the other recording medium, the identification information read out by said second reading means Writing means, wherein the first reading means reads an ID number unique to the recording medium itself from the second area of the other recording medium, and the writing means includes the first reading means. After reading the ID number unique to the recording medium itself from the other recording medium, when the other recording medium is extracted from the mounting means and the one recording medium is mounted on the mounting means, the one recording medium A unique ID number is written in the recording medium itself of the other recording medium read by the first reading means.

Furthermore, in order to solve the above problems, the recording method according to the present invention records predetermined content data and authentication data used for authentication when transmitting and receiving the content data in accordance with a predetermined file system. A recording medium having a first area and a second area in which an ID number unique to the recording medium itself is recorded is mounted on the mounting unit, and the one recording medium mounted on the mounting unit The ID number unique to the recording medium itself is read from the second area, the identification information is read from the storage unit in which the specific identification information of the predetermined device is written, and one recording medium is extracted from the mounting unit, when another recording medium is mounted to the mounting portion, and a unique ID number on the recording medium read out from the recording medium of the one to the other recording medium, the identification read from the storage unit Writes information to the recording medium itself from the other recording medium reads the unique ID number, the other recording medium is removed from the mounting portion, when one of the recording medium is mounted to the mounting portion, the one In this recording medium, an ID number unique to the recording medium itself read from the other recording medium is written.

Further, engagement Help program to the present invention, in order to solve the above problems, and a predetermined content data, authentication data used for authentication when receiving the content data is recorded in compliance with a predetermined file system that a first area, one recording medium and a second area that is recorded a unique ID number on the recording medium itself is mounted to the mounting portion, the recording from the second area of the recording medium A first reading step of reading an ID number unique to the medium itself, a second reading step of reading the identification information from a storage unit in which unique identification information of a predetermined device is written, and one from the mounting unit recording medium is withdrawn, when another recording medium is attached to the mounting portion, ID unique by the first reading step to said another recording medium to the recording medium itself read out from the first recording medium No. and, recording the second area of the second and the first writing step of writing the identification information read out from the storage unit by the read process, the other recording medium attached to the mounting portion A third reading step of reading an ID number unique to the medium itself, and when another recording medium is extracted from the mounting section and one recording medium is mounted on the mounting section, the first recording medium is loaded with the first recording medium; And causing the computer to execute a second writing step of writing a unique ID number to the recording medium itself read from the other recording medium by the reading step of 3.

Furthermore, in order to solve the above-described problem, the data transmission / reception system according to the present invention has at least one recording apparatus connected to a network and another recording apparatus, and transmits / receives data between the recording apparatuses. In the data transmission / reception system, the other recording device includes predetermined content data, a first area in which authentication data used for authentication when transmitting and receiving the content data is recorded in conformity with a predetermined file system, a first reading means for reading the unique ID number from another recording medium to the recording medium itself and authentication data with the recording medium itself and a second area that is recorded a unique ID number, the first a first transmission means for transmitting over the network the unique ID number of the recording apparatus of the first and the authentication data read by the reading means on a recording medium itself, Recording means for recording the data supplied from the one recording device on the other recording medium, and the one recording device uses the authentication data transmitted by the transmitting means of the other recording device. Authentication means for confirming the presence or absence of authentication of the other recording apparatus based on the above, predetermined content data after authentication by the authentication means, and authentication data used for authentication when transmitting / receiving the content data is a predetermined file system A second area for reading out authentication data recorded in one recording medium having a first area recorded in conformity with the ID No. 2 and a second area in which an ID number unique to the recording medium itself is recorded. a reading means, the first unique ID number on the transmitted recording medium itself from transmitting means of the other recording device, etc. if they were included in the read authentication data by the second reading means Based on the determination result of the determination means, a third reading means for reading content data from the one recording medium, and the content data read by the third reading means in the other recording A second transmission means for transmitting to the apparatus, and the recording means included in the other recording apparatus receives the content data transmitted from the second transmission means included in the one recording apparatus. It is recorded on a recording medium.

In addition, in order to solve the above-described problem, the data transmission / reception method according to the present invention has at least one recording apparatus connected to a network and another recording apparatus, and transmits / receives data between the recording apparatuses. In the data transmission / reception method, the other recording device includes predetermined content data, a first area in which authentication data used for authentication when transmitting and receiving the content data is recorded in accordance with a predetermined file system, The authentication data and the ID number unique to the recording medium are read from the other recording medium having the second area in which the ID number unique to the recording medium is recorded , and the read authentication data and the recording medium itself a unique ID number and transmitted via the network to a recording apparatus of the foremost, the one of the recording apparatus, the authentication data transmitted from said other recording device The first area in which the presence or absence of authentication of the other recording device is confirmed based on the predetermined content data and authentication data used for authentication when transmitting / receiving the content data is recorded in conformity with a predetermined file system. And the authentication data recorded in one recording medium having the second area in which the ID number unique to the recording medium itself is recorded, and the read authentication data from the other recording device It is determined whether the recording medium itself transmitted via the network includes a unique ID number, and based on the determination result, the content data recorded on the one recording medium is read, and the read content Data is transmitted to the other recording device via the network, and the other recording device transmits the data from the one recording device via the network. The data that has been signal, characterized in that recorded in said another recording medium.

Furthermore, engagement Help program to the present invention, in order to solve the above problems, and at least one recording device on the network, and other recording devices are connected, data transmission and reception performed between the the recording device In the program for causing a computer to execute, a predetermined content data and authentication data used for authentication when transmitting and receiving the content data are recorded on the one recording device in accordance with a predetermined file system. One recording medium having one area and a second area in which the ID number unique to the recording medium itself is recorded is loaded, and predetermined content data and the content data are stored in the other recording device. a first area in which authentication data used for authentication when receiving is recorded in compliance with a predetermined file system, specific to the recording medium itself When the other recording device and a second area in which the ID number is recorded is mounted, the recording medium itself and authentication data from the other recording medium attached to said other recording device A first reading step for reading the unique ID number, and the authentication data read in the first reading step and the ID number unique to the recording medium itself are transmitted to the one recording device via the network. A first transmission step, an authentication step for confirming the presence or absence of authentication of the other recording device based on the authentication data transmitted from the other recording device via the network in the first transmission step; a second reading step of reading the authentication data recorded on one recording medium, said first transmitting step unique ID number on the recording medium itself that is transmitted over the network by the said second A determination step for determining whether the data is included in the authentication data read in the reading step; a third reading step for reading content data from the one recording medium based on a determination result of the determination step; A second transmission step of transmitting the content data read in the reading step to the other recording device via the network, and the content data transmitted via the network by the second transmission step to the other recording medium The computer is caused to execute a recording process for recording on the computer.

The recording apparatus, method, and program according to the present invention include a medium-specific ID number read from the second area of one recording medium and device-specific identification information read from the storage unit of the device in another recording medium. Since the ID number unique to the medium written and read from the second area of the other recording medium is written to the one recording medium, the content data recorded in the first area of the one recording medium is recorded to the other recording medium. One recording medium can be associated with another recording medium so that it can be transmitted only to the medium.

  Furthermore, in the data transmission / reception system, method and program according to the present invention, at least one recording apparatus and another recording apparatus are connected via a network, and one recording medium is inserted into one recording apparatus. When another recording medium is inserted into another recording apparatus, the authentication data and the medium-specific ID number are read from the other recording medium by the other recording apparatus, and the read authentication data and medium-specific ID are read The number is transmitted to one recording device via the network, and the one recording device authenticates the devices based on the authentication data transmitted from the other recording device, and is transmitted from the other recording device. It is determined whether the ID number unique to the other recording medium is included in the authentication data recorded on the one recording medium, and on the one recording medium based on the determination result. Since the recorded content data is read and the read content data is transmitted to other recording devices via the network, data can be transmitted and received only between the associated recording media, and a complicated password for the user can be obtained. A highly secure data transmission / reception system can be constructed without setting.

Hereinafter, record reproducing apparatus and method and a program according to an embodiment of the present invention, the data transmitting and receiving system and method, and a program will be described.

  In this embodiment, as an example, it is assumed that it corresponds to a recording / reproducing system (mini disk system) for a mini disk (MD) which is a magneto-optical disk on which data recording is performed by a magnetic field modulation method. The explanation is as follows. 1. Disc specifications and area structure 2. Disk management structure UTOC, 4. 4. Cluster structure, 5. Realization example of FAT file system in data track; 6. Configuration of recording / reproducing apparatus The data transmission / reception system will be described in this order.

1. Disc Specifications and Area Structure The disc employed in the present embodiment can record audio data on a mini disc type disc based on a predetermined disc format, and can record various data for computer use, for example. In this specification, the terms “audio track”, “data track”, “MD audio data”, and “high-density data” are used for distinction in explanation.

  An “audio track” is one section of audio data in the mini-disc system, and corresponds to, for example, one piece of music. The audio data recorded as the audio track is data compressed by the ATRAC (Adaptive Transform Acoustic Coding) compression method and modulated by the “first modulation method” as the ACIRC error correction method and EFM modulation. The audio data according to the first modulation method recorded on the “audio track” is referred to as “MD audio data”.

  The “data track” is a section (track) in which general-purpose data that can be used in, for example, a personal computer or a distribution system is recorded. As will be described in detail later, a general-purpose file system such as a FAT file system is constructed in the “data track”. There are various types of data to be recorded, such as software data for computer use, application programs, text files, image (video / still image) files, audio data files such as music, etc. Available.

  These various data use RLL (1, 7) PP (RLL: Run Length Limited, PP: Parity preserve / Prohibit rmtr (repeated minimum transition run length)) modulation, RS-LDC error correction method and Viterbi demodulation method. The data is recorded as data by the “second modulation method” that realizes high-density recording. The data according to the second modulation method recorded on the “data track” is referred to as “high density data”.

  FIG. 1 shows a comparison between audio mini-discs (and MD-DATA) and disc standards employed in this embodiment. As a format of the mini disk (and MD-DATA), the track pitch is 1.6 μm and the bit length is 0.59 μm / bit. The laser wavelength λ is 780 nm, and the aperture ratio NA of the optical head is 0.45.

  As a recording method, a groove recording method is adopted. That is, the groove (groove on the disk surface) is used as a track for recording and reproduction.

  As an addressing method, a single spiral groove (track) is formed, and a wobbled groove in which wobbles as address information are formed on both sides of the groove is used.

  In the present specification, the absolute address recorded by wobbling is also referred to as ADIP (Address in Pregroove).

  An EFM (8-14 conversion) system is adopted as a recording data modulation system. As an error correction method, ACIRC (Advanced Cross Interleave Reed-Solomon Code) is adopted, and a convolution type is adopted for data interleaving. The data redundancy is 46.3%.

  The data detection method is a bit-by-bit method. As a disk drive system, CLV (Constant Linear Velocity) is adopted, and the linear velocity of CLV is set to 1.2 m / s.

  The standard data rate at the time of recording and reproduction is 133 kB / s, and the recording capacity is 164 MB (140 MB in MD-DATA). A data unit called a cluster is a minimum data rewrite unit. This cluster is composed of 36 sectors including 32 main sectors and 4 link sectors.

  On the other hand, the disc employed in this example has a track pitch of 1.3 μm and a bit length of 0.16 μm / bit, both of which are shorter than the audio mini-disc.

  However, the laser wavelength is λ = 780 nm, the aperture ratio of the optical head is NA = 0.45, the recording method is a groove recording method, and the address method is a groove (track) formed by a single spiral. Thus, a system using a wobbled groove in which wobbles as address information are formed is adopted. In other words, these points are the same as those of the audio mini-disc, and the optical system configuration, ADIP address reading method, and servo processing in the recording / reproducing apparatus are the same, so compatibility is maintained.

  As a recording data modulation method, an RLL (1, 7) PP method, which is considered to be suitable for high-density recording, is adopted, and as an error correction method, RS-LDC with a BIS (Burst Indicator Subcode) having a higher correction capability. (Reed Solomon-Long Distance Code) method is used. A block-complete type is used for data interleaving. Data redundancy is 20.50%. The data detection method is a Viterbi decoding method using a partial response PR (1, 2, 1) ML.

  The disk drive system is CLV, the linear velocity is 2.7 m / s, and the standard data rate during recording / reproduction is 614 kB / s. As the recording capacity, 297 MB can be obtained. By changing the modulation method from EFM to RLL (1,7) PP method, the window margin is changed from 0.5 to 0.666. In this respect, a 1.33 times higher density can be realized.

  In addition, since the physical format is changed from the CIRC system to the RS-LDC system with BIS and the system using the sector structure difference and Viterbi decoding, the data efficiency is changed from 53.7% to 79.5%. 1.48 times higher density can be realized.

  Overall, the data capacity is 1.97 times (about twice). That is, the recording capacity can be about 297 MB, which is about twice that of the audio mini-disc. A cluster which is a minimum data rewrite unit is composed of 16 sectors.

  As described above, the disc employed in this embodiment can record both audio tracks and data tracks. When the audio track is recorded on the disc employed in this embodiment, the MD audio data modulation method is the EFM modulation and ACIRC method as shown in the audio mini-disc.

  Examples of various area structures on the disk employed in this embodiment are schematically shown in FIGS. As shown in FIG. 2, FIG. 3, and FIG. 4, the innermost periphery of the disk is a PTOC (pre-mastered TOC) area, which is a pre-mastered area as a physical structure. That is, this is an area where reproduction-only data by emboss pits is recorded, and PTOC which is management information is recorded as the reproduction-only data.

  The outer periphery from the pre-mastered area is a recordable area (a magneto-optical recordable area), which is a recordable / reproducible area in which a groove as a guide groove of a recording track is formed.

  The innermost peripheral side of this recordable area is a UTOC area. Although detailed explanation is omitted, in the UTOC area, a buffer area with the pre-mastered area, a power calibration area used for adjusting the output power of the laser beam, and the like are provided. UTOC data is repeatedly recorded three times in the three cluster sections.

  Although details of the contents of the UTOC will be described later, a data format is defined in each of 32 main sectors (SC00 to SC1F) in one cluster (ADIP cluster described later), and predetermined management information is recorded respectively. That is, the address of each track recorded in the program area, the address of the free area, etc. are recorded, and the UTOC sector is defined so that information such as the track name and recording date and time associated with each track can be recorded. .

  In the recordable area, the outer peripheral side from the UTOC area is a data area, and this data area is an area used for recording an audio track or a data track.

  As a usage mode of the data area in the disc employed in the present embodiment, it is possible to record mixed audio tracks and data tracks at random.

  In this case, as shown in FIG. 2, for example, in the data area, an audio recording area AA in which one or a plurality of audio tracks are recorded and a high-density data recording area DA in which one or a plurality of data tracks are recorded are Each is formed at an arbitrary position. As will be described later in the description of UTOC, one audio track and one data track do not necessarily have to be physically continuously recorded on the disc, but a plurality of parts (parts are physically It may be divided into sections that are continuously recorded). Therefore, for example, even when two high-density data recording areas DA that are physically separated exist as shown in FIG. 2, the number of data tracks may be one or plural.

  Further, as another usage mode of the data area in the disc employed in the present embodiment, it is conceivable to divide the area where the audio track is recorded and the area where the data track is recorded. For example, this is a case where the area is divided and set in advance by PTOC management, or the area is divided by initialization / formatting before using the disk. In this case, as shown in FIG. 3, for example, a high-density data recording area DA in which one or more data tracks are recorded is set on the inner circumference side of the disc, and one or more audio tracks are recorded on the outer circumference side of the disc. An audio recording area AA is set. In this way, when the high-density data recording area DA and the audio recording area AA are divided and set on the disc, the recording / reproducing apparatus corresponds respectively depending on whether the recording / reproduction target is MD audio data or high-density data. Recording / reproduction is performed by accessing the area.

  In contrast to the case of FIG. 2, the area setting may be a high-density data recording area DA on the outer circumference side of the disk and an audio recording area AA on the inner circumference side of the disk, or a plurality of physically separated high-density areas. A data recording area DA and a plurality of audio recording areas AA that are also physically separated may be formed. However, if the high-density data recording area DA is set on the inner peripheral side as shown in FIG. 2, it is advantageous in terms of access. In the data track recorded in the high-density data recording area DA, for example, data for computer use is recorded. In this case, access is often performed repeatedly in a shorter data section than in the case of MD audio data. is assumed. Here, the disk employed in the present embodiment is a CLV system, and considering that the time required for one disk rotation on the inner circumference side is shorter, the inner circumference side has a disk rotation waiting time for access. This means that it is shortened compared to the outer peripheral side, that is, the access time can be shortened.

  Further, as another usage mode of the data area in the disk employed in this embodiment, as shown in FIG. 4, the entire data area may be a high-density data recording area DA in which data tracks are recorded. Conceivable.

  As shown in FIG. 2, when the audio track and the data track can be arbitrarily mixedly recorded, only the data track is recorded as a result, and the state shown in FIG. Thus, it may be a dedicated disk for recording data tracks.

2. Disk Management Structure The disk management structure employed in this embodiment will be described with reference to FIG. As described above, as the management information, first, PTOC and UTOC adopted in a normal mini-disc system are recorded. The PTOC is recorded by pits as information that cannot be rewritten. In this PTOC, the basic disc management information includes the total disc capacity, the UTOC position in the UTOC area, the position of the power calibration area, the start position of the data area, the end position of the data area (leadout position), and the like. It is recorded.

  On the other hand, the UTOC recorded in the recordable area is management information that is rewritten in accordance with recording / erasing of a track (audio track / data track), and the start position and end position of each track (parts constituting the track). And manage modes. It also manages a free area in which no track is recorded in the data area, that is, a part as a writable area.

  FIG. 5 shows, as an example, a state in which three audio tracks and one data track exist in the data area. In this case, UTOC manages these four tracks in total.

  The three audio tracks are, for example, three pieces of music data, which are tracks of MD audio data that is compressed by ATRAC and modulated by the ACIRC and EFM methods (first modulation method). Note that UTOC and PTOC are also recorded in a format that conforms to a predetermined disk system, that is, data as UTOC and PTOC is data of the first modulation format.

  On the other hand, the data track is a track formed by high-density data modulated by the RS-LDC and RLL (1, 7) PP method (second modulation method). On the UTOC, the entire data track is managed as one track that does not depend on MD audio data. That is, from the UTOC, one or a plurality of part positions as a whole of the data track on the disk are managed.

  The data track is configured with a high-density data cluster as a minimum recording unit. In the data track, a cluster attribute table (hereinafter referred to as “CAT”) for managing high-density data clusters included in the data track is recorded. In CAT, attributes (such as disclosure / impossibility, normal / defective, etc.) for each of the high-density data clusters constituting the data track are managed.

  Using a high-density data cluster that cannot be disclosed in this data track, it is used for copyright protection and the like, and is used for a disc-specific ID number (hereinafter referred to as “disc ID”) and for data tampering check. The hash value (hash) of is recorded. Of course, various other types of non-public information may be recorded. It is assumed that only a specially authorized device can access this non-disclosure area.

  An area (exportable area) that can be disclosed within a data track is an area that can be used as a recording area by an external computer or the like via a general-purpose data interface such as USB or SCSI. It is said. For example, FIG. 5 shows a state in which a FAT file system is constructed in the exportable area using data files of FAT and FAT management.

  In other words, the data recorded in the exportable area is not managed by the UTOC, but is managed by general-purpose management information such as FAT, and can be recognized by an external computer or the like that does not conform to the mini-disc system. It becomes.

  Further, as shown in FIG. 6, the exportable area is a content file that is a normal file, a companion list file that includes information on a disc that allows data transmission / reception, and a data transmission / reception request. A log file in which various information is recorded in accordance with the FAT file system and an area in which a disk ID is recorded. In the log file, the disk ID of the disk that actually transmitted and received data is recorded.

  A plurality of data tracks having such a structure may be recorded on the disc. In this case, each data track is managed as one track from the UTOC, and the data in the exportable area in each data track is managed by FAT or the like. For example, each data track has its own FAT file system. Alternatively, one FAT file system may be recorded over a plurality of data tracks.

  The details of the companion list file will be described below with reference to FIG. The companion list file is a list of information for registering other disks that are permitted to transmit and receive data, and one ID Descriptor is generated for each other permitted disk. The ID Descriptor is assigned to a disc ID recorded in advance on the disc, a name arbitrarily given to the disc ID by the user (hereinafter referred to as “disc name”), and a recording / reproducing apparatus into which the disc is inserted. Manufacturing number (hereinafter referred to as “recorder ID”) and a network ID (for example, IP address) indicating where the device is connected on the network. For example, when a device is connected to a personal computer and transmits / receives data to / from other devices connected to the network via the personal computer, the IP address of the personal computer is read and the read IP address is read from the network. It may be used as an ID.

  Further, the example in which the disk ID is data in the data track and is not FAT-managed has been described above, but may be recorded in any logical form as long as the information is not FAT-managed. For example, a track for private information may be provided as a track managed directly from the UTOC, or may be recorded in the UTOC / PTOC. Furthermore, a recording area for non-public information may be provided by using a portion (for example, the innermost circumference of the disk) that is not used for UTOC in the UTOC area.

3. UTOC
A UTOC management method will be described. In the UTOC, a track based on MD audio data and a data track based on high-density data recorded on a disc are managed in units of tracks.

  In a predetermined disk system, ADIP by a wobbling groove is given as a physical address, and data of an audio track (track such as music in a mini disk system) is defined by a cluster defined by ADIP (hereinafter “ADIP cluster”). Is the minimum rewriting unit.

  Although the structure of this cluster will be described later, one ADIP cluster is composed of 36 sectors (2352 byte ADIP sectors) of 32 main sectors and 4 link sectors. The physical address as ADIP is given in units of sectors. That is, the physical address includes an ADIP cluster address as an upper value and an ADIP sector address as a lower value.

  UTOC data is recorded in a specific ADIP cluster in the UTOC area described above. The contents of UTOC data are defined for each sector in the ADIP cluster. UTOC sector 0 (the first ADIP sector in the ADIP cluster) manages parts as tracks and free areas. UTOC sector 1 and sector 4 manage character information corresponding to the track.

  The UTOC sector 2 manages the recording date and time corresponding to the track. Here, the description of sector 1, sector 2, and sector 4 is omitted, and UTOC sector 0 is described.

  The UTOC sector 0 is an audio track such as recorded music, a free area in which a new track can be recorded, and a data area in which management information about the data track is recorded. For example, when recording a track on a disk, the recording / reproducing apparatus searches for a free area on the disk from UTOC sector 0 and records data (MD audio data or high-density data) here. become. At the time of reproduction, an area in which a track to be reproduced is recorded is determined from UTOC sector 0, and the area is accessed to perform a reproduction operation.

  FIG. 8 shows the structure of UTOC sector 0. In the data area of TOC sector 0 (2352 bytes (4 bytes × 588)), a synchronization pattern formed by arranging 1 byte data of all 0s or all 1s at the head position is recorded.

  Subsequently, as a value corresponding to the ADIP address, an address to be a cluster address (Cluster H) (Cluster L) and a sector address (Sector) is recorded over 3 bytes, and further 1 byte of mode information (MODE) is added. Collective header. The 3-byte address here is the address of the sector itself.

  Next, at the specified byte position, manufacturer code, model code, track number of the first track (First TNO), track number of the last track (Last TNO), sector usage status (Used sectors), disk serial number, disk ID, etc. Data is recorded.

  In addition, various pointers (P-DFA, P, etc.) are used as pointer parts in order to identify the areas of tracks (music pieces, etc.) and free areas recorded by the user by associating them with the table parts described later. -EMPTY, P-FRA, P-TNO1 to P-TNO255) are recorded.

  In addition, 255 parts tables (01h) to (FFh) are provided as table parts to be associated with the pointers (P-DFA to P-TNO255). Each part table has a starting point for a certain part. Start address, end address to be terminated, and mode information (track mode) of the part are recorded. The start address and end address are values corresponding to cluster / sector addresses as ADIP addresses. In addition, since the parts shown in each part table may be connected to other parts in succession, link information indicating the part table in which the start address and end address of the connected part are recorded can be recorded. Has been. Note that a part refers to a track portion in which data is physically continuously recorded in one track. The addresses indicated as the start address and the end address are addresses indicating one or a plurality of parts constituting one musical piece (track).

  In this type of recording / reproducing apparatus, the data of a track such as one musical piece is physically discontinuous, that is, even if it is recorded over a plurality of parts, it is reproduced while being accessed while being accessed between parts. Since there is no hindrance, the music recorded by the user may be divided into a plurality of parts for the purpose of efficient use of the recordable area.

  Therefore, link information is provided. For example, the part tables can be connected by specifying the part tables to be connected by the numbers (01h) to (FFh) given to the respective part tables. That is, in the table part in the UTOC sector 0, one part table represents one part. For example, for a music composed of three parts connected, three part tables connected by link information. To manage the position of the part.

  Actually, the link information is indicated by a numerical value that is a byte position in the UTOC sector 0 by a predetermined calculation process. That is, the part table is designated as 304+ (link information) × 8 (byte).

  Each part table from (01h) to (FFh) in the table part of UTOC sector 0 is as follows according to the pointers (P-DFA, P-EMPTY, P-FRA, P-TNO1 to P-TNO255) in the pointer part. The contents of the parts are shown as follows.

  The pointer P-DFA indicates a defective area on the disc. One part table or a head part table in a plurality of part tables indicating a track portion (= part) that becomes a defective area due to a scratch or the like is shown. It is specified. That is, when there is a defective part, any one of (01h) to (FFh) is recorded in the pointer P-DFA, and the corresponding part table indicates the defective part by the start and end addresses. . When there are other defective parts, other part tables are designated as link information in the parts table, and the defective parts are also indicated in the parts table. If there is no other defective part, the link information is set to “00h”, for example, and there is no link thereafter.

  The pointer P-EMPTY indicates the head part table of one or a plurality of unused part tables in the table section. When there is an unused part table, the pointer P-EMPTY is (01h) Any one of (FFh) is recorded.

  When there are multiple unused part tables, the part tables are specified sequentially by link information from the part table specified by the pointer P-EMPTY, and all unused part tables are linked on the table part. .

  The pointer P-FRA indicates a free area (including an erase area) in which data on the disk is writable, and is in one or more parts tables in which a track portion (= part) to be a free area is indicated. The first part table of is specified. In other words, when there is a free area, any one of (01h) to (FFh) is recorded in the pointer P-FRA, and the part table corresponding to it is indicated by the start and end addresses. Has been. Further, when there are a plurality of such parts, that is, there are a plurality of parts tables, the part information in which the link information becomes “00h” is sequentially specified by the link information.

  FIG. 9 schematically shows the management state of the parts that become free areas using the parts table. This is because when parts (03h) (18h) (1Fh) (2Bh) (E3h) are free areas, this state follows the pointer P-FRA and the parts table (03h) (18h) (1Fh) (2Bh ) (E3h) indicates the state represented by the link. The management form of the above-described defective area and unused parts table is the same as this.

  Pointers P-TNO1 to P-TNO255 indicate the tracks recorded on the disk. For example, the pointer P-TNO1 is the head of one or a plurality of parts in which data of the first track is recorded. The part table that shows the parts to be specified is specified. For example, if the music set as the first track (audio track) is recorded on the disc without being divided, that is, recorded as one part, the recording area of the first track is indicated by the pointer P-TNO1. Recorded as start and end addresses in the parts table shown.

  Also, for example, when a music piece that is designated as the second track (audio track) is discretely recorded on a plurality of parts on the disc, each part follows the temporal order to indicate the recording position of the second track. It is specified. That is, from the part table specified by the pointer P-TNO2, other part tables are sequentially specified by the link information in accordance with the temporal order, and are linked to the part table having the link information of “00h” (the above, The same form as FIG. 9). In this way, for example, all the parts in which the data constituting the second music is recorded are sequentially designated and recorded, so that the data of the UTOC sector 0 is used to reproduce the second music or the area of the second music. When performing overwriting recording, it is possible to access the recording / reproducing head to extract continuous music information from discrete parts, or to record using the recording area efficiently.

  When a data track is recorded, the start address, end address, and track mode of the data track are recorded in a parts table specified by a certain pointer P-TNOx. Of course, when the data track is composed of a plurality of parts, a plurality of parts tables are linked and managed by link information as in the case of the audio track.

By the way, each part table records a 1-byte track mode, which is track attribute information. Assuming that 8 bits constituting one byte are d1 (MSB) to d8 (LSB), this track mode is defined as follows.
d1... 0: Write protected (overwrite erase, edit prohibited), 1: Write permitted d2... 0: Copyrighted, 1: No copyright d3... 0: Original, 1: First generation or higher d4 ... 0: audio data, 1: other d5, d6 ... 01: normal audio, other: undefined d7 ... 0: monaural, 1: stereo d8 ... 0: emphasis off, 1: emphasis On Here, in the track mode of the parts table for the audio track, d4 = 0 is set, indicating that the track is based on MD audio data. On the other hand, in the track mode of the parts table for the data track, d4 = 1 indicates that the track is not based on MD audio data. In this embodiment, d4 = 1 is information indicating that the data track is high-density data.

  FIG. 10 shows various examples of track management by UTOC. FIGS. 10A, 10B, and 10C show a case where an audio track and a data track can be recorded at an arbitrary position on the data area as shown in FIG.

  FIG. 10A shows a case where the tracks TK1 and TK3 managed by the UTOC sector 0 are audio tracks and the track TK2 is a data track. In this case, the start address, end address, and track mode of the audio track TK1 are described in the parts table indicated by the pointer P-TNO1. Also, the start address, end address, and track mode of the data track TK2 are described in the parts table indicated by the pointer P-TNO2. In this track mode, d4 = 1.

  The start address, end address, and track mode of the audio track TK3 are described in the parts table indicated by the pointer P-TNO3. In addition, the start address and end address of the free area are described in the parts table indicated by the pointer P-FRA.

  FIG. 10B shows a case where the track TK1 managed by the UTOC sector 0 is a data track, and this data track is formed of two parts TK1-1 and TK1-2.

  In this case, the start address, end address, and track mode of the first part TK1-1 of the data track TK1 are described in the part table indicated by the pointer P-TNO1, and the data track is displayed in the part table linked from the part table. The start address, end address, and track mode of the second part TK1-2 of TK1 are described. In these parts tables, d4 = 1 of the track mode is set.

  FIG. 10C shows a case where two tracks TK1 and TK3 managed by the UTOC sector 0 are data tracks. In this case, the start address, end address, and track mode of the data track TK1 are described in the parts table indicated by the pointer P-TNO1. Further, the start address, end address, and track mode of the data track TK3 are described in the parts table indicated by the pointer P-TNO3. In these parts tables, d4 = 1 of the track mode is set.

  FIG. 10D shows a state where, for example, the audio recording area AA and the high-density data recording area DA are divided in the data area as shown in FIG. 3, and the data is recorded as the track TK1 on the inner periphery side. This is a case where a track is recorded and audio tracks TK2 and TK3 are recorded on the outer peripheral side. In this case, the start address, end address, and track mode of the data track TK1 are described in the parts table indicated by the pointer P-TNO1.

  FIGS. 10E and 10F show examples where the entire data area is the high-density data recording area DA as shown in FIG. 4, for example. FIG. 10E shows an example in which one data track TK1 is recorded over the entire data area. In this case, the start address, end address, and track mode of the data track TK1 are described in the parts table indicated by the pointer P-TNO1. FIG. 10F shows an example in which two data tracks TK1 and TK2 are recorded in the data area. In this case, the start address, end address and track mode of the data track TK1 are described in the parts table indicated by the pointer P-TNO1, and the start address, end address and track of the data track TK2 are described in the parts table indicated by the pointer P-TNO2. A mode is described.

  As shown in these examples, depending on the UTOC, audio tracks are managed in units of tracks, and data tracks are also managed in units of the tracks. As described above, actual management within the data track is performed by, for example, building a FAT file system.

4). Cluster structure Next, the cluster structure employed in the disk employed in this embodiment will be described.

  The audio mini-disc system adopts a cluster / sector structure corresponding to a physical address as ADIP, and the cluster / sector structure is used as it is for recording and reproduction of audio tracks even in the disc employed in this embodiment. .

  First, the cluster / sector structure corresponding to this ADIP will be described with reference to FIGS. In the present specification, for the sake of descriptive distinction, clusters / sectors corresponding to ADIP are referred to as “ADIP clusters” and “ADIP sectors”. As will be described later, regarding the recording / reproducing of the data track, different cluster / sector structures are adopted, which are referred to as “high density data cluster” and “high density data sector”.

  For MD audio data, a data stream for each unit called ADIP cluster is formed as recording data. On the recording track in the mini-disc system, as shown in FIG. 11B, a cluster CL (CL # (n), CL # (n + 1)... Are continuously formed, and one ADIP cluster is a minimum unit when MD audio data is recorded.

  One ADIP cluster CL is formed of four link sectors shown as ADIP sectors SCFC to SCFF in FIG. 11A and 32 main sectors shown as ADIP sectors SC00 to SC1F. That is, one ADIP cluster is composed of 36 ADIP sectors. One ADIP sector is a data unit formed of 2352 bytes.

  The link sectors SCFC to SCFF can be used for recording a buffer area as a break of recording operation, various operation adjustments, or recording information set as sub-data.

  The above-described recording of PTOC data, UTOC data, MD audio data, etc. is performed in the 32-sector main sectors SC00 to SC1F. The link sector and the main sector are physically the same.

  Here, when data tracks are recorded on a disk having such a physical cluster / sector structure, that is, a high density in which the linear density of data recording is higher than that of MD audio data by the above-described second modulation method. Consider the case of recording data.

  When high-density data having a high linear density is recorded, the address obtained from ADIP originally recorded on the disc does not match the address of the signal actually recorded. Random access is performed based on the ADIP address. However, in the case of data reading, it is only necessary to read the recorded data by accessing an approximate position based on the ADIP address. Don't be. However, in the case of data writing, unless data is written by accessing an accurate position, there is a possibility that already recorded data is erased by overwriting. Needless to say, access to an accurate position during reproduction is preferable for rapid data reading.

  Therefore, it is appropriate that the high-density data cluster / high-density data sector for recording / reproducing high-density data can be accurately grasped from the ADIP address. Therefore, a high-density data cluster can be grasped as a data unit obtained by converting the ADIP address molded and recorded on the disc according to a predetermined rule.

  Further, in this case, an integral multiple of the ADIP sector that is an ADIP address unit is made to be a high-density data cluster. This makes it possible to always start writing at the same timing after obtaining the ADIP address from the disk when recording high-density data at an arbitrary position.

  Also, an integer number of high-density data clusters are included in an ADIP cluster that is an ADIP address unit. Then, the address conversion rule from the ADIP cluster address to the high-density data cluster address is simplified, and the conversion circuit or software configuration can be simplified.

  FIGS. 11C and 11D show an example in which two high-density data clusters are written in one ADIP cluster based on such a concept. As shown in FIG. 11C, each high-density data cluster dCL (dCL # (2n), dCL # (2n + 1)...) Is formed in a ½ ADIP cluster section. That is, 2 high density data cluster sections = 1 ADIP cluster section, and 18 ADIP sector sections = 1 high density data cluster section.

  Therefore, in a certain section (part), the offsets of the two high-density data clusters recorded in the ADIP cluster CL # (n) where the number of ADIP clusters from the top (= ADIP cluster offset) is #n are # 2n, # 2n + 1. That is, as shown in FIGS. 11B and 11C, the high-density data clusters dCL # (2n) and dCL # (2n + 1) are recorded in the ADIP cluster CL # (n). The high-density data cluster dCL # (2n) is a section of the ADIP sectors SCFC to SC0D in the ADIP cluster CL # (n), and the high-density data cluster dCL # (2n + 1) is the ADIP sector SC0E to the ADIP cluster CL # (n). SC1F section.

  Such a high-density data cluster is a minimum rewrite unit for high-density data. The high-density data cluster has a structure including 16 high-density data sectors. That is, as shown in FIG. 11 (d), one high-density data cluster section has a preamble formed at the front end and a postamble formed at the rear end, and 16 high-density data clusters are formed between the preamble and the postamble. Density data sectors dSC # 0 to dSC # 15 are arranged.

  One high-density data sector is, for example, 4096 bytes. This high density data sector is not directly correlated with the ADIP address. Although FIG. 11 shows an example in which two high-density data clusters are arranged in one ADIP cluster, it is also conceivable to arrange three or more high-density data clusters in one ADIP cluster. Of course, one high-density data cluster is not limited to a section of 18 ADIP sectors.

  These can be determined according to various design conditions such as the difference in data recording density between the first modulation method and the second modulation method, the number of sectors constituting the high-density data cluster, and the setting of the size of one sector. Good.

5. Example of Realization of FAT File System in Data Track An example of the structure of a data track in which various data is recorded as high-density data will be described with reference to FIG. As described in FIG. 5, the data track has an area that is released to an external computer device or the like as an exportable area, and a private area is set for the outside so that a unique ID or A hash value is recorded. Further, the high-density data cluster constituting the data track is managed by a cluster attribute table (CAT). FIG. 12 shows an example in which the FAT file system is realized in the exportable area.

  In this example, as shown in FIGS. 12D and 12E, it is assumed that one data track is recorded on the disc in a state managed as two parts in the UTOC. It is assumed that the first part of the data track is a section of ADIP clusters # 0 to # 2 and the second part is a section of ADIP cluster # 3. In this case, the two parts are physically separated as shown schematically in FIG.

  This data track is formed by four ADIP clusters. In the case of the cluster structure described with reference to FIG. 11, data is recorded by eight high-density data clusters # 0 to # 7 shown in FIG. A track will be constructed.

  The high-density data clusters # 0 to # 7 are managed by the CAT. The high-density data cluster by the CAT is the exportable area shown in FIG. 5, and the high-density data cluster is an area (hidden ( secure) data area (hereinafter referred to as “hidden data area”). In this example, the high-density data cluster # 0 is set as a hidden data area, and a disk ID or hash value as a unique ID is recorded here. In this example, the high-density data clusters # 1 to # 7 are used as the exportable area.

  This exportable area is an area that can be freely accessed from an external computer device or the like via an interface such as USB or SCSI. The unit of writing / reading in the exportable area is generally 512 bytes, 1024 bytes, 2048 bytes, etc., and is smaller than the high-density data cluster which is a data track rewriting unit.

  The method of using the exportable area depends on the OS of the connected computer, but in this example, the FAT file system is recorded in the exportable area.

  That is, as shown in FIG. 12B, for example, 8192-byte FAT clusters # 0 to # 55 are formed. One FAT cluster is formed of four FAT sectors # 0 to # 3 each having 2048 bytes. The FAT sector and FAT cluster here are units handled in the FAT file system and do not depend on the above-described ADIP cluster, high-density data cluster, ADIP sector, or high-density data sector. For example, in the FAT clusters # 0 to # 55, a FAT file system composed of data files by FAT and FAT management is stored.

  In the FAT file system, data is handled in units of FAT sectors on the computer. However, since the rewrite unit for the disk is a high-density data cluster, for example, even when a certain FAT sector is rewritten, the rewrite on the disk is performed in the unit of the high-density data cluster including the FAT sector. It will be.

  For example, writing / reading of FAT sector data to / from a FAT file system recorded as a data track on the disk will be described later.

  The unique ID and hash value recorded in the high-density data cluster # 0 set as the hidden data area are used for authentication, falsification check, and the like for the data of the FAT file system. In addition, writing / reading to / from the hidden data area can be performed only by a specific device, but in that case, encryption is performed after mutual authentication determined separately.

  In FIG. 12, the top high-density data cluster # 0 is the hidden data area. Of course, any high-density data cluster constituting the data track may be the hidden data area.

6). Configuration of Recording / Reproducing Device Next, the configuration and operation of the recording / reproducing device according to the present invention will be described below.

  The configuration of the recording / reproducing apparatus corresponding to the disc employed in this embodiment will be described with reference to FIG. FIG. 13 shows that the recording / reproducing apparatus 1 according to the present invention can be connected to, for example, a personal computer (PC).

  The recording / reproducing apparatus 1 includes a media drive unit 3 that performs recording / reproduction with respect to a mounted disc 2, a data input / output unit 4 that performs input / output of data, a memory 5 that temporarily stores data, and recording / reproduction. And a system controller 6 that controls the entire apparatus 1.

  The media drive unit 3 rotationally drives the loaded disk 2 by a CLV method with a spindle motor (not shown). The media drive unit 3 includes an optical head 10 that irradiates a disk 2 with laser light during recording / reproduction, a magnetic head 11 that applies a magnetic field modulated by data to be recorded to the disk 2, and an optical head 10. An RF amplifier unit 12 that performs reproduction signal processing on the read data, a recording driver unit 13 that supplies a signal modulated in accordance with the data to be recorded to the optical head 10, and a drive signal for rotating the disk 2 are generated. And a motor driver unit 14.

  The optical head 10 performs a high level laser output for heating the recording track to the Curie temperature during recording, and a relatively low level laser for detecting data from reflected light by the magnetic Kerr effect during reproduction. Output. For this reason, although not shown in detail here, the optical head 10 is equipped with a laser diode as a laser output means, an optical system including a polarization beam splitter, an objective lens, and the like, and a detector for detecting reflected light. ing. Further, the objective lens provided in the optical head 10 is held so as to be displaceable in the radial direction of the disk and in the direction of contacting and separating from the disk by, for example, a biaxial mechanism.

  The magnetic head 11 is disposed at a position facing the optical head 10 with the disk 2 interposed therebetween, and performs an operation of applying a magnetic field modulated by recording data to the disk 2. Although not shown, a sled motor and a sled mechanism are provided to move the entire optical head 10 and the magnetic head 11 in the disk radial direction.

  The RF amplifier unit 12 performs current-voltage conversion, amplification, matrix calculation, and the like on the signal input from the optical head 10, and performs reproduction RF signal, tracking error signal TE, focus error signal FE, groove information as reproduction information. (ADIP information recorded by wobbling the track on the disc) and the like are extracted.

  The motor driver unit 14 generates a required servo drive signal based on the tracking error signal TE and the like supplied from the RF amplifier unit 12 via the system controller 6. The servo drive signal here includes a biaxial drive signal for driving the biaxial mechanism (two types of focus direction and tracking direction), a sled motor drive signal for driving the sled mechanism, and a spindle motor drive signal for driving the spindle motor. Become. With such a servo drive signal, focus control, tracking control for the disk 2 and CLV control for the spindle motor are performed.

  The data input / output unit 4 includes an audio signal input terminal 20 for inputting sound through a microphone, an amplifying unit 21 for amplifying the audio signal input from the audio signal input terminal 20, and a digital signal for digitally converting the amplified audio signal. The conversion unit 22, the optical signal input terminal 23 for inputting the optical signal, the amplification unit 24 for amplifying the audio signal output via the system controller, and the audio for outputting the audio signal amplified by the amplification unit 24 to the headphones It has a signal output terminal 25 and a USB interface unit 26 that transmits data to a PC or the like.

  The system controller 6 performs overall control in the recording / reproducing apparatus 1 and also performs communication control with a personal computer connected to the USB interface unit 26. That is, the system controller 6 can communicate with a personal computer connected via the USB interface unit 26, and can receive commands such as a write request and a read request and transmit status information and other necessary information. Do.

  The system controller 6 instructs the media drive unit 3 to read management information from the disk 2 when the disk 2 is mounted on the media drive unit 3, for example, and stores the read management information or the like in the memory 5. Let

  The system controller 6 can grasp the track recording state of the disk 2 by reading the management information of the PTOC and UTOC, and can grasp the high-density data cluster structure in the data track by reading the CAT. It is possible to respond to an access request for a data track from. In addition, it is possible to perform disk authentication and other processes based on the disk ID and hash value, or to transmit these values to a personal computer for processing.

  When there is a read request for a FAT sector from the personal computer, the system controller 6 causes the media drive unit 3 to read a high-density data cluster including the FAT sector. Then, the system controller 6 extracts the requested FAT sector data from the read data of the high-density data cluster, and transmits it to the personal computer via the USB interface unit.

  When there is a write request for a certain FAT sector from the personal computer, the system controller 6 first causes the media drive unit 3 to read out the high-density data cluster including the FAT sector. Then, the system controller 6 causes the FAT sector data (record data) from the personal computer to be rewritten on the memory 5 via the USB interface.

  Then, the system controller 69 transfers the data of the high-density data cluster read out in the state where the necessary FAT sector is rewritten to the media drive unit 3 as recording data. In the media drive unit 3, the recording data of the high-density data cluster is modulated by the second modulation method and written to the disk 2.

  The above is the control for recording / reproducing the data track, and data transfer at the time of recording / reproducing the MD audio data (audio track) is performed via an audio processing unit (not shown).

  Here, processing for enabling data transmission from one disk (hereinafter referred to as “disk 2A”) to the other disk (hereinafter referred to as “disk 2B”) will be described below with reference to the flowchart shown in FIG. explain. In the following, a procedure for associating disks so that data can be transmitted from the disk 2A to the disk 2B by one recording / reproducing apparatus (hereinafter referred to as “recording / reproducing apparatus 1A”) will be described. The recording / reproducing apparatus 1A has a display unit for displaying various messages.

  In step S1, the recording / reproducing apparatus 1A confirms that the disc 2A has been inserted. If the disc 2A has been inserted, the process proceeds to step S2. If the disc 2A has not been inserted, a message prompting insertion of the disc 2A is displayed on the display unit.

  In step S2, the recording / reproducing apparatus 1A reads the unique disk ID from the disk 2A.

  In step S3, the recording / reproducing apparatus 1A reads a device number (for example, a manufacturing number), and generates an ID Descriptor A from the read device number and the disk ID of the disk 2A read in step S2. In the recording / reproducing apparatus 1A, when a disk name is added to the disk ID, the disk name is also included in the ID Descriptor A, and the device is connected to the network via a personal computer. In this case, the IP address of the personal computer is read out and used as the network ID of ID Descriptor A.

  In step S4, the recording / reproducing apparatus 1A removes the disc 2A and displays a message on the display unit prompting insertion of the disc 2B. The user takes out the disc 2A from the recording / reproducing apparatus 1A and inserts the disc 2B according to the message on the display unit.

  In step S5, the recording / reproducing apparatus 1A reads the unique disk ID from the inserted disk 2B.

  In step S6, the recording / reproducing apparatus 1A generates an ID Descriptor B based on the unique disk ID of the disk 2B read in step S4.

  In step S7, the recording / reproducing apparatus 1A records the ID Descriptor A of the disc 2A generated in step S3 in the companion list file of the disc 2B.

  In step S8, the recording / reproducing apparatus 1A removes the disc 2B and displays a message for prompting insertion of the disc 2A on the display unit.

  In step S9, the recording / reproducing apparatus 1A records the ID Descriptor B generated in step S6 in the companion list file of the inserted disc 2A.

  Therefore, the recording / reproducing apparatus according to the present invention reads the unique disk ID from the loaded disk 2A, reads the unique number of the device, and generates the ID Descriptor A from the disk ID of the disk 2A and the unique number of the device. When the disk 2A is replaced with the disk 2B, the ID Descriptor A is recorded on the disk 2B, the unique disk ID is read from the disk 2B, the ID Descriptor B is generated from the read unique disk ID, and the disk 2A is recorded from the disk 2B. Since the disk 2A and the disk 2B are associated with each other by recording the ID Descriptor B on the disk 2A, the data recorded on the disk 2A can be transmitted only to the disk 2B via the network. The user has to perform troublesome tasks such as setting a password. The data recorded on the disk 2 can be safely transmitted and received only by a specific person.

  Note that the recording / reproducing apparatus 1A may have a configuration in which a disk association button is provided, and the operations in steps S1 to S9 are automatically performed when the user presses the button. Moreover, the invention which concerns on this application may be a program for making a computer perform step S1-step S8.

7). Data Transmitting / Receiving System Next, when a plurality of recording / reproducing apparatuses 1 are connected via a network, a data transmitting / receiving system 7 for transmitting / receiving data between the apparatuses will be described with reference to the flowchart shown in FIG. It is assumed that the disc 2A and the disc 2B are associated with each other so that data can be transmitted / received via the network by the recording / reproducing apparatus 1A as described above.

  In step S10, the other recording / reproducing apparatus (hereinafter referred to as “recording / reproducing apparatus 1B”) reads ID Descriptor B from the companion list file recorded on the inserted disc 2B. Note that the recording / reproducing apparatus 1B may select a desired ID Descriptor when the companion list file recorded on the disc 2B includes a plurality of ID Descriptors.

  In step S11, the recording / reproducing apparatus 1B extracts the network ID from the ID Descriptor B read from the disk 2B.

  In step S12, the recording / reproducing apparatus 1B specifies the recording / reproducing apparatus 1A connected to the network based on the extracted network ID. The recording / reproducing apparatus 1B may confirm (authenticate) whether the recording / reproducing apparatus 1A is a predetermined apparatus after specifying the recording / reproducing apparatus 1A.

  In step S13, the recording / reproducing apparatus 1B reads the unique disk ID recorded in advance on the disk 2B and transmits it to the recording / reproducing apparatus 1A via the network.

  In step S14, when the recording / reproducing apparatus 1B receives the disc ID from the recording / reproducing apparatus 1B, the recording / reproducing apparatus 1A reads the companion list file recorded on the inserted disk 2A and records it in the companion list file. In step S13, it is confirmed whether all the ID descriptors that have been recorded have the disk ID transmitted from the recording / reproducing apparatus 1B. When the disc ID is transmitted from the recording / reproducing apparatus 1B, if the disc 2A is not inserted in the recording / reproducing apparatus 1A, a message prompting the user to insert the disc is displayed on the display unit of the recording / reproducing apparatus 1A. You may display. If the disc ID transmitted from the recording / reproducing apparatus 1B is included in any of the ID Descriptors of the companion list file of the disc 2A, the process proceeds to step S15.

  If none of the ID descriptors of the companion list file of the disc 2A includes the disc ID transmitted from the recording / reproducing device 1B, the recording / reproducing device 1B receives the disc ID via the network. Notify that. If none of the ID Descriptors recorded in the companion list file of the disc 2A includes the disc ID transmitted from the recording / reproducing device 1B, the display unit of the recording / reproducing device 1A You may also display a message to replace with another disk.

  In step S15, the recording / reproducing apparatus 1A transmits a message to the recording / reproducing apparatus 1B via the network that the inserted disk 2A is surely capable of transmitting and receiving data to and from the disk 2B.

  In step S16, the recording / reproducing apparatus 1B generates a data transmission request signal for requesting data transmission, and transmits the data transmission request signal to the recording / reproducing apparatus 1A via the network.

  In step S17, the recording / reproducing apparatus 1A reads data from the disc 2A in response to the data transmission request signal supplied from the recording / reproducing apparatus 1B, and transmits the read data to the recording / reproducing apparatus 1B via the network.

  In step S18, the recording / reproducing apparatus 1B records the transmitted data on the disk 2B.

  In the above example, the recording / reproducing apparatus 1A and the recording / reproducing apparatus 1B are connected on the network. However, even if a plurality of recording / reproducing apparatuses are connected, they are included in the ID descriptor. Since the IP address used as the network ID is a unique address, a desired recording / reproducing device can be specified without fail if it exists on the network.

  Therefore, in the data transmission / reception system according to the present invention, a plurality of recording / reproducing apparatuses are connected on the network, and the companion list file is read out from the disc 2B inserted by the recording / reproducing apparatus 1B. The recording / reproducing apparatus 1A connected to the network is identified from the network IDs included in the predetermined ID Descriptor B among the ID Descriptors recorded in the file, the unique disk ID of the disk 2B is read, and the read disk The ID is transmitted to the recording / reproducing apparatus 1A, the companion list file is read from the disk 2A inserted by the recording / reproducing apparatus 1A, and the disk ID corresponding to the ID Descriptor recorded in the read companion list file is Whether or not If it is determined from the determination result that the disc 2A and the disc 2B are associated with each other, the data recorded on the disc 2A is transmitted to the recording / reproducing apparatus 1B via the network. Data recorded on the disc can be safely transmitted / received only by a specific person without causing troublesome work.

  Moreover, the invention which concerns on this application may be a program for making a computer perform step S10-step S17.

It is explanatory drawing of the disk used with the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of the 1st area structure of the disc used with the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of the 2nd area structure of the disc used with the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of the 3rd area structure of the disc used with the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of the management structure of the disk used with the recording / reproducing apparatus which concerns on this invention. It is a schematic diagram which shows the structure of the exportable area of the management structure of the disk shown in FIG. FIG. 7 is a schematic diagram showing a structure of a companion list file in the exportable area shown in FIG. 6. It is explanatory drawing of the UTOC sector 0 of the disc used with the recording / reproducing apparatus based on this invention. It is explanatory drawing of the link form of the UTOC sector 0 of the disk used with the recording / reproducing apparatus based on this invention. It is explanatory drawing of the example of management by the UTOC of the disk used with the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of the cluster structure example of the disk used with the recording / reproducing apparatus which concerns on this invention. It is explanatory drawing of the FAT file system in the data track of the disc used with the recording / reproducing apparatus based on this invention. It is a block diagram which shows the structure of the recording / reproducing apparatus which concerns on this invention. It is a flowchart explaining the correlation process of the disk by the recording / reproducing apparatus based on this invention. It is a flowchart which shows the mode of the transmission / reception of data by the data transmission / reception system which concerns on this invention.

Explanation of symbols

  1 Recording / playback device, 2 disc, 3 media drive unit, 4 data input / output unit, 5 memory, 6 system controller

Claims (7)

A first area where predetermined content data and authentication data used for authentication when transmitting and receiving the content data are recorded in conformity with a predetermined file system, and a unique ID number are recorded on the recording medium itself Mounting means to which a recording medium having a second area is mounted;
First reading means for reading an ID number unique to the recording medium itself from a second area of the one recording medium mounted on the mounting means;
Storage means in which specific identification information of a given device is written;
Second reading means for reading the identification information from the storage means;
After the ID number unique to the recording medium itself is read by the first reading means, when one recording medium is removed from the mounting means and another recording medium is mounted on the mounting means, the other An ID number unique to the recording medium itself read from the one recording medium by the first reading means and a writing means for writing the identification information read by the second reading means. Prepared,
The first reading means reads an ID number unique to the recording medium itself from the second area of the other recording medium,
The writing means reads the ID number unique to the recording medium itself from the other recording medium by the first reading means, and then the other recording medium is extracted from the mounting means, and one recording medium is attached to the recording medium. A recording apparatus for writing a unique ID number to a recording medium itself of another recording medium read by the first reading means on the one recording medium when the recording medium is mounted on the recording medium. The recording apparatus according to claim 1, wherein the first reading unit reads an ID number unique to the recording medium itself from the second area arranged on the innermost circumference of the recording medium. A first area where predetermined content data and authentication data used for authentication when transmitting and receiving the content data are recorded in conformity with a predetermined file system, and a unique ID number are recorded on the recording medium itself A first recording medium having a second area is mounted on the mounting portion;
Read the ID number unique to the recording medium itself from the second area of the one recording medium mounted in the mounting section,
Read the identification information from the storage unit in which the specific identification information of a given device is written,
When one recording medium is removed from the mounting unit and another recording medium is mounted on the mounting unit, an ID unique to the recording medium itself read from the one recording medium to the other recording medium Write the number and the identification information read from the storage unit,
Read the ID number unique to the recording medium itself from the other recording medium,
When another recording medium is extracted from the mounting unit and one recording medium is mounted on the mounting unit, the ID unique to the recording medium itself read from the other recording medium to the one recording medium A recording method for writing numbers. On the computer,
A first area where predetermined content data and authentication data used for authentication when transmitting and receiving the content data are recorded in conformity with a predetermined file system, and a unique ID number are recorded on the recording medium itself A recording medium having a second area is mounted on the mounting portion;
A first reading step of reading an ID number unique to the recording medium itself from the second area of the recording medium;
A second reading step of reading out the identification information from a storage unit in which identification information unique to a predetermined device is written;
When one recording medium is removed from the mounting unit and another recording medium is mounted on the mounting unit, the recording read from the one recording medium to the other recording medium by the first reading step A first writing step of writing an ID number unique to the medium itself and identification information read from the storage unit by the second reading step;
A third reading step of reading an ID number unique to the recording medium itself from the second area of the other recording medium mounted on the mounting unit;
When another recording medium is removed from the mounting unit and one recording medium is mounted on the mounting unit, the recording read from the other recording medium by the third reading step onto the one recording medium. A program for causing a second writing process to write an ID number unique to the medium itself. In a data transmission / reception system in which at least one recording device and another recording device are connected on a network and perform data transmission / reception between the recording devices,
The other recording device is
A first area where predetermined content data and authentication data used for authentication when transmitting and receiving the content data are recorded in conformity with a predetermined file system, and a unique ID number are recorded on the recording medium itself First reading means for reading authentication data and an ID number unique to the recording medium itself from another recording medium having a second area,
First transmitting means for transmitting the authentication data read by the first reading means and an ID number unique to the recording medium itself to the one recording apparatus via a network;
Recording means for recording the data supplied from the one recording device on the other recording medium,
The one recording device is
Authentication means for confirming the presence or absence of authentication of the other recording apparatus based on the authentication data transmitted by the transmitting means of the other recording apparatus;
After the authentication by the authentication means, the predetermined content data and the first area where the authentication data used for authentication when transmitting / receiving the content data are recorded in conformity with the predetermined file system and the recording medium itself Second reading means for reading authentication data recorded on one recording medium having a second area in which a unique ID number is recorded;
Determining means for determining whether the ID number unique to the recording medium itself transmitted from the first transmitting means of the other recording device is included in the authentication data read by the second reading means; ,
Third reading means for reading content data from the one recording medium based on the determination result of the determination means;
Second content data transmitted by the third reading means is transmitted to the other recording device.
Transmission means, and
The recording unit included in the other recording apparatus is a data transmission / reception system that records the content data transmitted from the second transmission unit included in the one recording apparatus on the other recording medium. In a data transmission / reception method in which at least one recording device and another recording device are connected on a network, and data is transmitted / received between the recording devices.
The other recording device is
A first area where predetermined content data and authentication data used for authentication when transmitting and receiving the content data are recorded in conformity with a predetermined file system, and a unique ID number are recorded on the recording medium itself The data for authentication and the ID number unique to the recording medium itself are read from the other recording medium having the second area,
The read authentication data and the ID number unique to the recording medium itself are transmitted to the one recording device via the network,
The one recording device is
Confirm the presence or absence of authentication of the other recording device based on the authentication data transmitted from the other recording device,
A first area where predetermined content data and authentication data used for authentication when transmitting and receiving the content data are recorded in conformity with a predetermined file system, and a unique ID number are recorded on the recording medium itself The authentication data recorded in one recording medium having the second area,
It is determined whether or not the read authentication data includes a unique ID number in the recording medium itself transmitted via the network from the other recording device,
Based on the determination result, the content data recorded on the one recording medium is read,
Send the read content data to the other recording device via the network,
A data transmission / reception method in which the other recording apparatus records data transmitted from the one recording apparatus via a network on the other recording medium. In a program for causing a computer to execute transmission / reception of data performed between at least one recording device and another recording device connected to a network and the recording device,
Specific to the first recording apparatus, the first area in which predetermined content data and authentication data used for authentication when transmitting and receiving the content data are recorded in conformity with the predetermined file system, and the recording medium itself Is attached to a recording medium having a second area in which the ID number is recorded, and predetermined content data and authentication data used for authentication when transmitting / receiving the content data to the other recording device. Is mounted with another recording device having a first area that is recorded in accordance with a predetermined file system and a second area in which a unique ID number is recorded on the recording medium itself,
On the computer,
A first reading step of reading authentication data and an ID number unique to the recording medium itself from the other recording medium mounted on the other recording device;
A first transmission step of transmitting the authentication data read in the first reading step and the ID number unique to the recording medium itself to the one recording device via a network;
An authentication step of confirming the presence or absence of authentication of the other recording device based on the authentication data transmitted from the other recording device via the network in the first transmission step;
A second reading step of reading the authentication data recorded on the one recording medium;
A determination step of determining whether the ID number unique to the recording medium itself transmitted through the network in the first transmission step is included in the authentication data read in the second reading step;
A third reading step of reading content data from the one recording medium based on a determination result of the determination step;
A second transmission step of transmitting the content data read in the third reading step to the other recording device via a network;
A program for executing a recording step of recording content data transmitted via a network in the second transmission step on another recording medium.

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