JP2005190569A - Disk reproducing device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk reproducing device and method capable of searching by using attribution information and also registering the reproduction order at the same time. <P>SOLUTION: When sequentially reproducing content data recorded on a disk 90 following the order they are registered, this disk drive obtains the attribution information about the content data recorded on each tracks of the disk 90, and displays the search items to search for the content data according to the obtained attribution information, and displays the content data belonging to the specified search item, then automatically registers the reproduction order so that the content data specified first come first to reproduce. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a disk reproducing apparatus and method for reproducing data compressed and recorded on a disk-shaped recording medium, and more particularly to a disk reproducing apparatus and method in which various reproduction modes are mounted.

  An optical disk can have a recording capacity that is two to three times larger than that of a magnetic disk or the like, and can be accessed at a higher speed than a tape-shaped recording medium. In addition, since data can be recorded / reproduced in a non-contact manner with respect to the recording medium and is excellent in durability, it has been particularly frequently used in recent years.

  Such an optical disk is formed of a read-only optical disk according to a standard CD format (CD-DA format) having a read-only area in which data is recorded as pits, and a magneto-optical recording medium capable of recording and reproducing data. Both a magneto-optical disk according to the CD-MO format as an extended format of the CD-DA format having a recorded recording / reproducing area, a read-only area where data is recorded as pits, and a recording / reproducing area where data can be recorded / reproduced There are known hybrid disks and the like.

  Conventionally, in a disk recording / reproducing apparatus that records data on a disk-shaped recording medium such as a magneto-optical disk or a hybrid disk, when the recording data becomes useless data during recording, the recording is stopped by a manual operation. It was. For example, when recording a song from a compact disk to a magneto-optical disk, recording by the magneto-optical disk recorder is stopped by manual operation after the reproduction of the CD player is completed.

  Here, in a disk-shaped recording medium such as an optical disk or a magnetic disk, a main data recording area for recording main data and a management data area for recording management data are provided, and the main data is determined by the management data recorded in the management data area. The recorded area and recordable area are managed for the recording area. For example, an optical disc according to the CD format has a data area in which program data such as performance data is recorded, and a lead-in area provided on the inner periphery thereof, and the recording position and recorded contents of the data area. As the table of contents (TOC) data, recording start address information and recording end address information are recorded in the lead-in area in order for all program data.

  In recent years, an MD system that digitally records and reproduces music signals and the like using a mini-disc (registered trademark) in which an optical disc having a diameter of 64 mm is housed in a cartridge has been proposed (for example, see Patent Document 1). ). There are three types of minidiscs: a read-only optical disk, a recordable magneto-optical disk, and a hybrid disk in which a read-only area and a recordable area are mixed. In an MD system capable of recording / reproducing main data, a program area and a UTOC area are provided in a recordable area of a mini-disc, and for the program area, the catalog (UTC) data indicating the recording position and the recorded contents is recorded. Recording is performed in the UTOC area. In other words, in the case of a mini-disc system, in order to manage the area where the user has recorded on the disk (data recorded area) and the area where nothing has been recorded yet (data unrecorded area), Management information different from the main data such as music is recorded. The recording device discriminates an area for recording while referring to the UTOC, and the reproducing device discriminates an area to be reproduced by referring to the UTOC.

  That is, in the UTOC, each recorded music is managed in units of data called tracks, and the start address, end address, etc. are recorded. As for a free area where nothing is recorded, its start address, end address, etc. are recorded as areas that can be used for future data recording.

  Also, in such a mini-disc system, a disc name that can show a disc title or the like as a part of the editing function and a track name that can show a title of a song or the like recorded in units of tracks (programs) Can be input and registered in accordance with a predetermined operation method. In the mini-disc system, character information registered as such a disc name and track name (hereinafter, when both are collectively referred to as “name”) is also stored in a predetermined area on the UTOC. For example, at the time of reproduction or the like, the disc name stored in the UTOC and the track name of a desired track can be displayed and output as necessary.

  By registering names for discs and tracks using these functions, the user can check the name of each disc loaded in the playback device and the track number for each track on the display. .

  In particular, in recent years, in the playback apparatus, in addition to the function of repeatedly playing a single song or randomly playing, a group playback function that plays back a plurality of groups collectively, a function that plays back only a track registered in a bookmark, etc. Playback that is rich in various variations can be realized.

JP 2002-150749 A

  By the way, the recording capacity has been increased by applying a new recording format to the next generation mini-discs that have increased the recording capacity while using magneto-optical recording media and new recording media capable of high-density recording. When next generation mini-discs are proposed, new attribute information (player, album, etc.) corresponding to these may be added to the content.

  However, in the conventional reproduction apparatus, as a result of adding such a wide variety of attribute information to each content, the user himself / herself has to perform a complicated search operation when extracting and reproducing the desired content. There was a problem.

  Also, in recent playback apparatuses, a program playback function has been implemented in which the playback order of content recorded on a disc is registered in advance and the content is played back according to the previously registered playback order.

  However, in the program playback function implemented in the conventional playback device, the user has to input the song number of the content himself, and the labor is excessive until the playback order is registered, which wastes time. There was a point.

  Accordingly, the present invention has been devised in view of the above-described problems, and an object of the present invention is to provide a disc playback apparatus and method for playing back data recorded on a mini disc according to attribute information. It is an object of the present invention to provide a disc playback apparatus and method capable of easily searching and simultaneously registering the playback order.

  In the present invention, in order to solve the above-described problems, the attributes relating to the content data recorded on each track of the disc-shaped recording medium when the content data recorded on the disc-shaped recording medium is reproduced according to the registered reproduction order. Information is acquired, search items for searching for content data according to the acquired attribute information are displayed, content data belonging to the specified search item is displayed, and higher than the previously specified content data The playback order is automatically registered as follows.

  That is, a disc playback apparatus to which the present invention is applied relates to content data recorded on each track of a disc-shaped recording medium in a disc playback device that plays back content data recorded on a disc-shaped recording medium according to a registered playback order. Attribute information acquisition means for acquiring attribute information, display means for searching for content data in accordance with the acquired attribute information, and display means for displaying content data belonging to the specified search item; A designation unit for designating search items and content data displayed on the display unit, and a registration unit for automatically registering the reproduction order so as to be higher than the content data previously designated via the designation unit. Prepare.

  A disc playback apparatus to which the present invention is applied relates to content data recorded on each track of the disc-shaped recording medium in the disc playback device that plays back the content data recorded on the disc-shaped recording medium in accordance with a registered playback order. Attribute information acquisition means for acquiring attribute information, display means for displaying search items for searching content data according to the acquired attribute information, and designation for specifying search items displayed on the display means And registration means for automatically registering the reproduction order so that the content data belongs to the search item previously specified via the specifying means.

  That is, a disc playback method to which the present invention is applied relates to content data recorded on each track of a disc-shaped recording medium in the disc playback method for playing back content data recorded on a disc-shaped recording medium according to a registered playback order. An attribute information acquisition step for acquiring attribute information, a first display step for displaying a search item for searching content data according to the acquired attribute information, and content data belonging to the specified search item are displayed. A second display step, and a registration step of automatically registering the playback order so that the content data is first assigned in the second display step.

  A disc playback method to which the present invention is applied is an attribute relating to content data recorded on each track of a disc-shaped recording medium in the disc playback method for reproducing content data recorded on a disc-shaped recording medium according to a registered playback order. An attribute information acquisition step for acquiring information, a display step for displaying a search item for searching for content data in accordance with the acquired attribute information, and content data belonging to the search item previously specified in the display step And a registration step of automatically registering the playback order so as to be higher.

  In the disc playback apparatus and method to which the present invention is applied, the attribute information regarding the content data recorded on each track of the disc-shaped recording medium when the content data recorded on the disc-shaped recording medium is played according to the registered playback order. The search item for searching the content data according to the acquired attribute information is displayed, the content data belonging to the specified search item is displayed, so that it is higher than the previously specified content data Automatically register the playback order.

  As a result, in the disc playback apparatus and method to which the present invention is applied, it is sufficient to specify the desired content data / group, so that the search can be easily performed, and at the same time, from the previously specified content data / group. It is possible to create a program in which the playback order is automatically registered so as to be higher, and the burden of labor can be reduced.

  Hereinafter, as a best mode for carrying out the present invention, a disk drive device 10 equipped with various recording / reproducing functions will be described in detail with reference to the drawings.

  The disk drive apparatus 10 is a conventional disk-type recording medium that employs a conventional magneto-optical recording system, by applying a signal system that is normally used as a recording / reproducing system for the disk-shaped recording medium and that is different from the recording format. This increases the recording capacity of the magneto-optical recording medium. Furthermore, by applying high-density recording technology and a new file system, it is possible to dramatically increase the recording capacity while maintaining compatibility between the conventional magneto-optical recording medium and the case outline and recording / reproducing optical system. The recording format is provided.

  In this specific example, a case where the present invention is applied to a mini-disc (registered trademark) recording medium as a disk-shaped magneto-optical recording medium will be described. Here, in particular, a disk that realizes an increase in its recording capacity using a conventional magneto-optical recording medium by applying a format different from the recording format normally used is referred to as a next-generation MD1, and high-density recording is performed. A disc that realizes an increase in recording capacity by applying a new recording format to a possible new recording medium will be described as the next generation MD2.

  In the following, specification examples of the next generation MD1 and the next generation MD2 will be described, and processing for generating recording data for both the disks by applying the address conversion method according to the present invention will be described.

  First, specifications of a conventional mini disc, next generation MD1, and next generation MD2 will be described with reference to FIG. The physical format of the mini disc (and MD-DATA) is defined as follows. The track pitch is 1.6 μm and the bit length is 0.59 μm / bit. The laser wavelength λ is λ = 780 nm, and the aperture ratio of the optical head is NA = 0.45. As a recording system, a groove recording system that uses grooves (grooves on the disk board surface) as tracks for recording and reproduction is adopted. As an address system, a single spiral groove is formed on the disk surface, wobbles meandering at a predetermined frequency (22.05 KHz) are formed on both sides of the groove, and the absolute address is set to the above frequency. Is used as a reference and recorded on a wobbled groove track. In the present specification, an absolute address recorded as wobble is also referred to as ADIP (Address in Pre-groove).

  In the conventional MD, recording is performed by adding 4 sectors as link sectors to 32 sectors as the main data portion and totaling 36 sectors as one cluster unit. The ADIP signal is composed of a cluster address and a sector address. The cluster address is composed of an 8-bit cluster H and an 8-bit cluster L, and the sector address is composed of a 4-bit sector.

  The conventional mini-disc employs an EFM (8-14 conversion) modulation method as a recording data modulation method. As an error correction method, ACIRC (Advanced Cross Interleave Reed-Solomon Code) is used. A convolution type is adopted for data interleaving. As a result, the data redundancy is 46.3%.

  Further, the data detection method in the conventional mini-disc is a bit-by-bit method, and CLV (Constant Linear Velocity) is adopted as the disc driving method. The linear velocity of CLV is 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). Further, the minimum data rewrite unit (unit cluster) is composed of 36 sectors including 32 main sectors and 4 link sectors as described above.

  Next, the next generation MD1 shown as this specific example will be described. The next generation MD1 has the same physical specifications as the conventional mini-disc and the recording medium. Therefore, the track pitch is 1.6 μm, the laser wavelength λ is λ = 780 nm, and the aperture ratio of the optical head is NA = 0.45. As a recording method, a groove recording method is adopted. The address system uses ADIP. As described above, since the optical system configuration, ADIP address reading method, and servo processing in the disk drive device are the same as those of the conventional mini disk, compatibility with the conventional disk is achieved.

  The next generation MD1 adopts the RLL (1-7) PP modulation method (RLL: Run Length Limited, PP: Parity preserve / Prohibit rmtr (repeated minimum transition runlength)) suitable for high-density recording as the modulation method of recording data. doing. Further, as an error correction method, an RS-LDC (Reed Solomon-Long Distance Code) method with BIS (Burst Indicator Subcode) having higher correction capability is used.

  Specifically, 2048 bytes of user data supplied from a host application or the like and 2052 bytes added with 4 bytes of EDC (Error Detection Code) are 1 sector (data sector, which is different from a physical sector on a disk to be described later). As shown in FIG. 2, the 32 sectors of Sector 0 to Sector 31 are combined into a block of 304 columns × 216 rows. Here, scramble processing is performed on 2052 bytes of each sector so as to obtain an exclusive OR (Ex-OR) with a predetermined pseudo-random number. A 32-byte parity is added to each column of the scrambled block to form an LDC (Long Distance Code) block of 304 columns × 248 rows. This LDC block is subjected to interleaving processing to form a block of 152 columns × 496 rows (Interleaved LDC Block). As shown in FIG. The structure is 496 lines, and a 2.5-byte frame synchronization code (Frame Sync) is added to the head position so that one line corresponds to one frame, resulting in a structure of 157.5 bytes × 496 frames. Each row in FIG. 3 corresponds to 496 frames of Frame 10 to Frame 505 in the data area in one recording block (cluster) shown in FIG. 9 to be described later.

  In the above data structure, data interleaving is a block completion type. As a result, the data redundancy becomes 20.50%. Further, a Viterbi decoding method based on PR (1, 2, 1) ML is used as a data detection method.

  A CLV system is used as the disk drive system, and its linear velocity is 2.4 m / s. The standard data rate at the time of recording / reproducing is 4.4 MB / s. By adopting this method, the total recording capacity can be set to 300 MB. Since the window margin is changed from 0.5 to 0.666 by changing the modulation method from EFM to RLL (1-7) PP, 1.33 times higher density can be realized. A cluster, which is the minimum data rewrite unit, is composed of 16 sectors and 64 kB. Since the recording modulation system is changed from the CIRC system to the RS-LDC system with BIS and the system using the difference in sector structure and Viterbi decoding, the data efficiency is increased from 53.7% to 79.5%. 48 times higher density can be realized.

  Taken together, the next generation MD1 can have a recording capacity of 300 MB, which is about twice that of the conventional mini-disc.

  On the other hand, the next-generation MD2 is a recording medium to which high-density recording technology such as a domain wall displacement detection method (DWDD: Domain Wall Placement Detection) is applied. The format is different. The next generation MD2 has a track pitch of 1.25 μm and a bit length of 0.16 μm / bit, and is densified in the line direction.

  In addition, in order to adopt compatibility with the conventional mini disk and the next generation MD1, the optical system, the reading method, the servo processing, and the like are in accordance with the conventional standards, the laser wavelength λ is λ = 780 nm, and 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 method using ADIP. The external form of the housing is the same as that of the conventional mini-disc and next-generation MD1.

  However, when reading the narrower track pitch and linear density (bit length) than the conventional one using an optical system equivalent to the conventional mini-disc and next-generation MD1, the cross track from the detrack margin, land and groove is used. It is necessary to eliminate constraints on talk, wobble crosstalk, focus leakage, CT signals, and the like. Therefore, the next generation MD2 is characterized in that the groove depth, inclination, width and the like of the groove are changed. Specifically, the groove depth of the groove is determined to be 160 nm to 180 nm, the inclination is 60 ° to 70 °, and the width is 600 nm to 800 nm.

  The next generation MD2 is an RLL (1-7) PP modulation system (RLL: Run Length Limited, PP: Parity preserve / Prohibit rmtr (repeated minimum transition runlength)) suitable for high-density recording as a modulation system for recording data. Is adopted. Further, as an error correction method, an RS-LDC (Reed Solomon-Long Distance Code) method with BIS (Burst Indicator Subcode) having higher correction capability is used.

  Data interleaving is a block-complete type. As a result, the data redundancy becomes 20.50%. As a data detection method, a Viterbi decoding method based on PR (1, -1) ML is used. A cluster which is the minimum data rewrite unit is composed of 16 sectors and 64 kB.

  The disk drive system uses a ZCAV (Zone Constant Angular Velocity) system, and the linear velocity is 2.0 m / s. The standard data rate at the time of recording / reproducing is 9.8 MB / s. Therefore, in the next generation MD2, the total recording capacity can be reduced to 1 GB by adopting the DWDD method and this driving method.

  An example of the area structure on the board of the next generation MD1 shown in this specific example is schematically shown in FIGS. The next-generation MD1 is the same medium as a conventional mini-disc, and a PTOC (Premastered Table Of Contents) is provided as a pre-mastered area on the innermost circumference side of the disc. Here, disc management information is recorded as embossed pits due to physical structural deformation.

  The outer periphery of the pre-mastered area is a recordable area capable of magneto-optical recording, and 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 (User Table Of Contents) area. In this UTOC area, UTOC information is described, a buffer area with a pre-mastered area, and output of laser light. A power calibration area used for power adjustment and the like is provided.

  As shown in FIG. 5, the next-generation MD2 does not use prepits in order to increase the density. Therefore, the next generation MD2 has no PTOC area. The next-generation MD2 has a unique ID area (UID) for recording information for copyright protection, information for checking data falsification, other non-public information, etc. in the inner peripheral area of the recordable area. Is provided. This UID area is recorded by a recording method different from the DWDD method applied to the next generation MD2.

  In this case, audio data tracks and data tracks for music data can also be recorded on the disc in the next generation MD1 and the next generation MD2. In this case, for example, as shown in FIG. 6, an audio recording area AA in which at least one audio track is recorded in the data area and a PC data recording area DA in which at least one data track is recorded are each arbitrarily set. Will be formed at the position.

  A series of audio tracks and data tracks are not necessarily recorded physically continuously on the disc, and may be divided into a plurality of parts and recorded as shown in FIG. A part refers to a section that is physically continuously recorded. That is, even when there are two physically separated PC data recording areas as shown in FIG. 6, the number of data tracks may be one or plural. However, FIG. 6 shows the physical specifications of the next generation MD1, but the audio recording area AA and the PC data recording area DA can also be recorded in a similar manner for the next generation MD2. .

  A specific example of the recording / reproducing apparatus having compatibility between the next generation MD1 and the next generation MD2 having the physical specifications described above will be described in detail later.

  Based on FIG. 7 and FIG. 8, the disk management structure of this example will be described. FIG. 7 shows the data management structure of the next generation MD1, and FIG. 8 shows the data management structure of the next generation MD2.

  Since the next-generation MD1 is the same medium as the conventional mini-disc as described above, the PTOC is recorded in the next-generation MD1 by the non-rewritable embossed pit as used in the conventional mini-disc. . In this PTOC, the total capacity of the disc, 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), etc. are recorded as management information.

  In the next-generation MD1, ADIP addresses 0000 to 0002 are provided with a power calibration area (Rec Power Calibration Area) for adjusting the laser writing output. In subsequent 0003 to 0005, UTOC is recorded. The UTOC includes management information that is rewritten in accordance with recording / erasing of a track (audio track / data track), and manages the start position, end position, and the like of each track and parts constituting the track. It also manages free areas in which no tracks have been recorded in the data area, that is, writable area parts. On the UTOC, the entire PC data is managed as one track that does not depend on MD audio data. Therefore, even if audio tracks and data tracks are mixedly recorded, the recording position of PC data divided into a plurality of parts can be managed.

  The UTOC data is recorded in a specific ADIP cluster in the UTOC area, and the contents of the UTOC data are defined for each sector in the ADIP cluster. Specifically, UTOC sector 0 (the first ADIP sector in this ADIP cluster) manages parts corresponding to tracks and free areas, and UTOC sector 1 and sector 4 manage character information corresponding to the tracks. ing. In the UTOC sector 2, information for managing the recording date and time corresponding to the track is written.

  The UTOC sector 0 is a data area in which recorded data, a recordable unrecorded area, and data management information are recorded. For example, when recording data on a disk, the disk drive device searches for an unrecorded area on the disk from UTOC sector 0 and records the data here. At the time of reproduction, an area in which a data track to be reproduced is recorded is determined from UTOC sector 0, and the area is accessed to perform a reproduction operation.

  In the next generation MD1, the PTOC and the UTOC are recorded as data modulated by a method based on the conventional mini-disc system, here, the EFM modulation method. Therefore, the next generation MD1 has an area recorded as data modulated by the EFM modulation method and an area recorded as high-density data modulated by the RS-LDC and RLL (1-7) PP modulation methods. It will be.

  Further, the alert track described in the ADIP address 0032 is used to notify that even if the next generation MD1 is inserted into the conventional minidisk disk driver device, this medium is not compatible with the conventional minidisk disk driver device. Is stored. This information may be audio data such as “This disc is in a format not compatible with this playback device” or warning sound data. Further, if it is a disk driver device provided with a display unit, data for displaying this fact may be used. This alert track is recorded by an EFM modulation method so that it can be read by a disk driver device corresponding to a conventional mini disk.

  In the ADIP address 0034, a disc description table (DDT) representing disc information of the next generation MD1 is recorded. In the DDT, a format type, the total number of logical clusters in the disk, an ID unique to the medium, update information of this DDT, defective cluster information, and the like are described.

  Since the DDT area is recorded as high-density data modulated by the RS-LDC and RLL (1-7) PP modulation schemes, a guard band area is provided between the alert track and the DDT.

  In addition, the youngest ADIP address where high-density data modulated by the RLL (1-7) PP modulation method is recorded, that is, the head address of the DDT, has a logical cluster number (LCN) of 0000. ) Is attached. One logical cluster is 65,536 bytes, and this logical cluster is the minimum unit for reading and writing. The ADIP addresses 0006 to 0031 are reserved.

  Subsequent ADIP addresses 0036 to 0038 are provided with a secure area that can be disclosed by authentication. This secure area manages the attributes of each cluster constituting the data, such as whether it can be disclosed or not. In particular, in this secure area, information for copyright protection, information for data falsification check, and the like are recorded. Moreover, various other non-public information can be recorded. This unpublishable area is limitedly accessible only by specially authorized external devices, and includes information for authenticating the accessible external devices.

  From the ADIP address 0038, a user area (arbitrary data length) that can be written and read freely and a spare area (data length 8) are described. When the data recorded in the user area is arranged in ascending order of LCN, it is divided into user sectors (User Sector) with 2,048 bytes as one unit from the top. A user sector number (USN) with a user sector of 0000 is assigned and managed by the FAT file system.

  Next, the data management structure of the next generation MD2 will be described with reference to FIG. The next generation MD2 does not have a PTOC area. Therefore, all disc management information such as total disc capacity, power calibration area position, data area start position, and data area end position (leadout position) is included in the ADIP information as a PDPT (Preformat Disc Parameter Table). Has been recorded. Data is modulated by the RS-LDC and RLL (1-7) PP modulation system with BIS and recorded by the DWDD system.

  Further, a laser power calibration area (PCA) is provided in the lead-in area and the lead-out area. In the next generation MD2, LCN is attached with the ADIP address following PCA as 0000.

  In the next generation MD2, a control area corresponding to the UTOC area in the next generation MD1 is prepared. FIG. 8 shows a unique ID area (Unique ID; UID) for recording information for copyright protection, information for checking data tampering, other non-public information, etc. This UID area is recorded at a further inner peripheral position of the lead-in area by a recording method different from the normal DWDD method.

  Both the next-generation MD1 and next-generation MD2 files are managed based on the FAT file system. For example, each data track has its own FAT file system. Alternatively, one FAT file system can be recorded over a plurality of data tracks.

  Next, the relationship between the ADIP sector structure of the next generation MD1 and the next generation MD2 shown as a specific example of the present invention and the data block will be described with reference to FIG. In a conventional mini-disc (MD) system, a cluster / sector structure corresponding to a physical address recorded as ADIP is used. In this specific example, for convenience of explanation, a cluster based on an ADIP address is referred to as an “ADIP cluster”. A cluster based on addresses in the next generation MD1 and the next generation MD2 is referred to as a “recording block” or a “next generation MD cluster”.

  In the next generation MD1 and the next generation MD2, the data track is handled as a data stream recorded by a series of clusters as a minimum unit of address as shown in FIG.

  As shown in FIG. 9, in the next generation MD1, one conventional cluster (36 sectors) is divided into two, and one recording block is composed of 18 sectors, and the next generation MD2 is composed of 16 sectors.

  The data structure of one recording block (one next generation MD cluster) shown in FIG. 9 includes 512 frames including a 10-frame preamble, a 6-frame postamble, and a 496-frame data portion. Further, one frame in this recording block is composed of a sync signal area, data, BIS, and DSV.

  Further, out of 512 frames of one recording block, each of 496 frames in which main data is recorded is divided into 16 equal parts, which is called an address unit. Each address unit consists of 31 frames. The number of the address unit is referred to as an address unit number (AUN). This AUN is a number assigned to all address units and is used for address management of recording signals.

  When recording high-density data modulated by the 1-7PP modulation method on a conventional mini-disc having a physical cluster / sector structure described in ADIP as in the next generation MD1, it is originally recorded on the disc. There arises a problem that the ADIP address does not match the address of the data block to be actually recorded. Random access is performed based on the ADIP address. In random access, when data is read, the recorded data can be read even if the vicinity of the position where the desired data is recorded, but when data is written. However, it is necessary to access an accurate position so as not to overwrite the already recorded data. Therefore, it is important to accurately grasp the access position from the next generation MD cluster / next generation MD sector associated with the ADIP address.

  Therefore, in the case of the next generation MD1, a high-density data cluster is grasped by a data unit obtained by converting an ADIP address recorded as a wobble on the medium surface according to a predetermined rule. In this case, an integral multiple of the ADIP sector is made to be a high-density data cluster. Based on this concept, when a next generation MD cluster is described for one ADIP cluster recorded on a conventional mini-disc, each next generation MD cluster is associated with a ½ ADIP cluster (18 sectors) section.

  Therefore, in the next generation MD1, ½ cluster of the conventional MD cluster is associated as the minimum recording unit (recording block).

  On the other hand, in the next generation MD2, one cluster is handled as one recording block.

  In this specific example, as described above, a data block of 2048 bytes supplied from the host application is defined as one logical data sector (LDS), and at this time, 32 data recorded in the same recording block. A set of logical data sectors is defined as a logical data cluster (LDC).

  With the data structure as described above, when recording next-generation MD data at an arbitrary position, it can be recorded on the medium with good timing. Also, by including an integer number of next generation MD clusters in an ADIP cluster, which is an ADIP address unit, an address conversion rule from an ADIP cluster address to a next generation MD data cluster address is simplified for conversion. The circuit or software configuration can be simplified.

  Although FIG. 9 shows an example in which two next-generation MD clusters are associated with one ADIP cluster, three or more next-generation MD clusters can be arranged in one ADIP cluster. At this time, one next-generation MD cluster is not limited to being composed of 16 ADIP sectors, but constitutes a difference in data recording density between the EFM modulation scheme and the RLL (1-7) PP modulation scheme, and the next-generation MD cluster. It can be set according to the number of sectors, the size of one sector, or the like.

  9 shows the data structure to be recorded on the recording medium. Next, when the ADIP signal recorded on the groove wobble track on the recording medium is demodulated by the ADIP demodulator 38 shown in FIG. The data structure will be described.

  FIG. 10A shows an ADIP data structure of the next generation MD2, and FIG. 10B shows an ADIP data structure of the next generation MD1.

  In the next-generation MD1, a synchronization signal, cluster H (Cluster H) information and cluster L (Cluster L) information indicating a cluster number in the disk, and sector information (Sector) including a sector number in the cluster are described. ing. The synchronization signal is described by 4 bits, the cluster H is described by the upper 8 bits of the address information, the cluster L is described by the lower 8 bits of the address information, and the sector information is described by 4 bits. Also, CRC is added to the latter 14 bits. As described above, the 42-bit ADIP signal is recorded in each ADIP sector.

  In the next-generation MD2, 4-bit synchronization signal data, 4-bit cluster H (Cluster H) information, 8-bit cluster M (Cluster M) information, 4-bit cluster L (Cluster L) information, 4 Bit sector information is described. BCH parity is added to the latter 18 bits. Similarly, in the next generation MD2, a 42-bit ADIP signal is recorded in each ADIP sector.

  In the ADIP data structure, the configuration of the above-described cluster H (Cluster H) information, cluster M (Cluster M), and cluster L (Cluster L) information can be arbitrarily determined. Also, other additional information can be described here. For example, as shown in FIG. 11, in the ADIP signal of the next generation MD2, the cluster information is represented by the upper 8 bits of cluster H (Cluster H) and the lower 8 bits of cluster L (Cluster L), and the lower 8 bits. The disk control information can be described instead of the cluster L represented by As disk control information, servo signal correction value, reproduction laser power upper limit value, reproduction laser power linear velocity correction coefficient, recording laser power upper limit value, recording laser power linear velocity correction coefficient, recording magnetic sensitivity, magnetic-laser pulse phase difference, Such as parity.

  Next, referring to FIG. 12, a specific example of the disk drive device 10 corresponding to the recording / reproduction of the next generation MD1 and the next generation MD2 will be described. Here, the disk drive device 10 can be connected to a personal computer (hereinafter referred to as a PC) 100, and the next generation MD1 and the next generation MD2 can be used as external storage such as a PC in addition to audio data.

  The disk drive device 10 includes a media drive unit 11, a memory transfer controller 12, a cluster buffer memory 13, an auxiliary memory 14, USB interfaces 15 and 16, a USB hub 17, a system controller 18, and an audio processing unit 19. And an operation unit 61 and a display unit 62.

  The media drive unit 11 performs recording / reproduction to / from individual disks 90 such as the loaded conventional mini disk, next generation MD1, and next generation MD2. The internal configuration of the media drive unit 11 will be described later with reference to FIG.

  The memory transfer controller 12 performs transmission / reception control of reproduction data from the media drive unit 11 and recording data supplied to the media drive unit 11. The cluster buffer memory 13 buffers data read from the data track of the disk 90 by the media drive unit 11 in units of high-density data clusters based on the control of the memory transfer controller 12. The auxiliary memory 14 stores various management information and special information such as UTOC data, CAT data, unique ID, and hash value read from the disk 90 by the media drive unit 11 based on the control of the memory transfer controller 12.

  The system controller 18 can communicate with the PC 100 connected via the USB interface 16 and the USB hub 17, and performs communication control with the PC 100 to execute commands such as a write request and a read request. It performs reception, status information, transmission of other necessary information, etc., and overall control of the disk drive device 10.

  For example, when the disk 90 is loaded in the media drive unit 11, the system controller 18 instructs the media drive unit 11 to read management information and the like from the disk 90, and the PTOC read by the memory transfer controller 12. Management information such as UTOC is stored in the auxiliary memory 14.

  The system controller 18 can grasp the track recording state of the disk 90 by reading the management information. Further, by reading the CAT, the high-density data cluster structure in the data track can be grasped, and the access request to the data track from the PC 100 can be handled.

  Also, the disk authentication process and other processes are executed using the unique ID and the hash value, these values are transmitted to the PC 100, and the disk authentication process and other processes are executed on the PC 100.

  When there is a read request for a FAT sector from the PC 100, the system controller 18 gives a signal to the media drive unit 11 to execute reading of a high-density data cluster including this FAT sector. The read high-density data cluster is written into the cluster buffer memory 13 by the memory transfer controller 12. However, when the data of the FAT sector has already been stored in the cluster buffer memory 13, reading by the media drive unit 11 is not necessary.

  At this time, the system controller 18 gives a signal for reading out the requested FAT sector data from the data of the high-density data cluster written in the cluster buffer memory 13, and the PC 100 via the USB interface 15 and the USB hub 17. Control to send to.

  Further, when there is a write request for a certain FAT sector from the PC 100, the system controller 18 causes the media drive unit 11 to read a high-density data cluster including the FAT sector. The read high-density data cluster is written into the cluster buffer memory 13 by the memory transfer controller 12. However, when the data of the FAT sector has already been stored in the cluster buffer memory 13, reading by the media drive unit 11 is not necessary.

  Further, the system controller 18 supplies the FAT sector data (recording data) transmitted from the PC 100 to the memory transfer controller 12 via the USB interface 15 and rewrites the corresponding FAT sector data on the cluster buffer memory 13. Let it run.

  Further, the system controller 18 instructs the memory transfer controller 12 to store the data of the high-density data cluster stored in the cluster buffer memory 13 with the necessary FAT sector being rewritten as recording data in the media drive unit 11. Let it be transferred. At this time, the media drive unit 11 uses the EFM modulation method if the mounted medium is a conventional mini disk, and uses the RLL (1-7) PP modulation method to generate a high-density data cluster if the medium is a next generation MD1 or next generation MD2. The recorded data is modulated and written.

  In the disk drive device 10 shown as this specific example, the above-described recording / reproduction control is control when recording / reproducing data tracks, and data transfer when recording / reproducing MD audio data (audio tracks) is audio. This is performed via the processing unit 19.

  The audio processing unit 19 includes, for example, an analog audio signal input unit such as a line input circuit / microphone input circuit, an A / D converter, and a digital audio data input unit as an input system. The audio processing unit 19 includes an ATRAC compression encoder / decoder and a compressed data buffer memory. Further, the audio processing unit 19 includes an analog audio signal output unit such as a digital audio data output unit, a D / A converter, and a line output circuit / headphone output circuit as an output system.

  An audio track is recorded on the disk 90 when digital audio data (or an analog audio signal) is input to the audio processing unit 19. Linear PCM audio data that is input as linear PCM digital audio data or analog audio signals and then converted by an A / D converter is subjected to ATRAC compression encoding and stored in a buffer memory. Thereafter, the data is read from the buffer memory at a predetermined timing (data unit corresponding to the ADIP cluster) and transferred to the media drive unit 11.

  The media drive unit 11 modulates the transferred compressed data by the EFM modulation method or the RLL (1-7) PP modulation method, and writes the modulated data on the disk 90 as an audio track.

  When reproducing the audio track from the disk 90, the media drive unit 11 demodulates the reproduction data into the ATRAC compressed data state and transfers it to the audio processing unit 19. The audio processing unit 19 performs ATRAC compression decoding to obtain linear PCM audio data, which is output from the digital audio data output unit. Alternatively, line output / headphone output is performed as an analog audio signal by a D / A converter.

  As will be described later, the operation unit 61 includes a character selection operator using a jog dial, a determination key for determining a command to be selected, playback, stop, pause, recording, cueing, recording mode designation, track mark, etc. Various keys are provided. The operation unit 61 may be provided on a remote controller connected from the disk drive device 10 via a cable, in addition to being provided on the main body side of the disk drive device 10.

  The display unit 62 is a display surface for displaying character information such as the elapsed performance time and the title of the program being played back, and is provided on the main body side of the disk drive device 10 as with the operation unit 61. Alternatively, it may be provided on a remote controller connected from the disk drive device 10 via a cable. The number of display lines in the display unit 62 may be different between the case where it is provided on the main body side of the disk drive device 10 and the case where it is provided on the remote controller. Incidentally, since the display unit 62 requires a certain level of display capability, that is, resolution, it is desirable to use a liquid crystal display tube, a fluorescent display tube, or the like.

  When the user causes the disk drive apparatus 10 to execute a desired command, the command list is displayed on the display unit 62 by operating the operation unit 61.

  FIG. 13 shows a schematic configuration of the operation unit 61 and the display unit 62. In FIG. 13, the same components as those in FIG. 12 are given the same numbers.

  The operation unit 61 includes a REC button 71 for performing a signal recording operation on the disc 90, a playback button 72 for reproducing a signal from the disc 90, and a pause function for temporarily stopping the recording operation and the reproducing operation on the disc 90. A pause button 74 for stopping the recording operation and the reproduction operation, a menu button 75 for executing various commands, and a jog dial 76 with a push switch. Incidentally, the playback button 72 may be configured as a push switch in the jog dial 76 to reduce the number of buttons.

  Further, a group key 81, a menu key 82, and a track mark key 83 are provided on the side surface of the disk drive device 10. The group key 81 is a key for instructing creation of a group in which contents to be recorded on the disc-shaped recording medium are aggregated. When a pressing input operation of the group key 81 is received, the recording is sequentially performed on the disc 90 in units of groups. The menu key 82 is a key for displaying a selection item corresponding to each function on the display unit 62 when an operation based on each function of the disk drive 10 is executed. Further, the track mark key 83 is a key for attaching a track mark at a desired position of the currently reproduced content data.

  Further, the operation unit 61 and the display unit 62 may be mounted on a remote controller 77 connected to the main body of the disk drive device 10. As the operation unit 61 mounted on the remote controller 77, in addition to the stop button and the jog dial 76, a multipurpose dial 78 for executing playback, fast forward, rewind, etc., a volume control key 79 for controlling the volume, etc. There is.

  The user can designate a desired command by using the jog dial 76 to place a cursor on the command displayed on the display unit 62 and press the push switch.

  FIG. 14 shows a display example on the display unit 62. During recording and reproduction, the system controller 18 displays information as shown in FIG. That is, in addition to displaying information necessary for recording and playback such as track number, time, and playback mode, it is also possible to display information indicating the battery status and the disk rotation status. In addition, a display for identifying whether it is during recording or during playback can be included in this.

  FIG. 14B shows an example in which commands based on the functions installed in the disk drive device 10 are displayed via the display unit. Incidentally, the number of lines that can be displayed at one time on the display unit 62 is limited to a few lines at most. Therefore, when displaying a wide variety of command lists, depending on the operation by the operation unit 61. This is realized by scrolling.

  Here, the functions implemented in the disk drive device 10 include, for example, a grouping function for collectively managing songs to be recorded into a plurality of groups, a group release function for releasing grouped songs, and recorded songs. Various functions such as a Move function for moving between groups have been installed. In addition to the function of playing a single song repeatedly and randomly, in addition to the above-mentioned function of playing back each group, the function of playing back only the top part, and the playback order of the content data recorded on the disc 90 in advance from the top to the bottom A variety of reproductions such as a program reproduction function for performing reproduction in accordance with the registered reproduction order at the time of reproduction can be realized. Furthermore, in addition to functions for freely specifying the display method on the display unit and the method for alerting the user, functions for transmitting / receiving data to / from electronic devices such as personal computers are also provided. Is done.

  In the disk drive device 10, commands corresponding to these functions are set in advance, and operations based on these functions are executed by command selection via the operation unit 61.

  The system controller 18 transfers a command input via the operation unit 61 to the media drive unit 11 or causes the display unit 62 to display character information such as elapsed performance time and title.

  The configuration shown in FIGS. 12 and 13 is an example. For example, when the disk drive device 10 is connected to the PC 100 and used as an external storage device that records and reproduces only the data track, the audio processing unit 19 It is unnecessary. On the other hand, when the main purpose is to record and reproduce audio signals, it is preferable that the audio processing unit 19 is provided and an operation unit and a display unit are provided as a user interface. The connection with the PC 100 is not limited to USB, but, for example, a so-called IEEE 1394 interface conforming to a standard established by IEEE (The Institute of Electrical and Electronics Engineers, Inc.) The connection interface can be applied.

  Next, the configuration of the media drive unit 11 for recording and reproducing the conventional mini disc, the next generation MD1, and the next generation MD2 will be described in more detail with reference to FIG.

  The media drive unit 11 is configured to execute EFM modulation and ACIRC encoding for recording of a conventional mini-disc, particularly as a recording processing system, in order to record and reproduce the conventional mini-disc, the next-generation MD1, and the next-generation MD2. It is characterized by comprising a configuration for executing RLL (1-7) PP modulation / RS-LDC encoding for recording of the next generation MD1 and the next generation MD2. In addition, as a playback processing system, a configuration for executing EFM demodulation and ACIRC decoding for playback of a conventional mini-disc, and PR (1, 2, 1) ML and Viterbi decoding are used for playback of the next generation MD1 and next generation MD2. It is characteristic in that it has a configuration for executing RLL (1-7) demodulation and RS-LDC decoding based on the detected data.

  The media drive unit 11 rotationally drives the loaded disk 90 by the spindle motor 21 by the CLV method or the ZCAV method. At the time of recording and reproduction, laser light is irradiated from the optical head 22 to the disk 90.

  The optical head 22 performs a high level laser output for heating the recording track to the Curie temperature during recording, and a relatively low level laser output for detecting data from reflected light by the magnetic Kerr effect during reproduction. Do. For this reason, the optical head 22 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. The objective lens provided in the optical head 22 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.

  In addition, in this example, in order to obtain the maximum reproduction characteristics for the conventional mini-disc and the next-generation MD1 and the next-generation MD2 having different physical specifications on the medium surface, both discs are read at the time of data reading. A phase compensator capable of optimizing the bit error rate is provided in the reading light optical path of the optical head 22.

  A magnetic head 23 is disposed at a position facing the optical head 22 across the disk 90. The magnetic head 23 applies a magnetic field modulated by the recording data to the disk 90. Although not shown, a sled motor and a sled mechanism are provided for moving the entire optical head 22 and the magnetic head 23 in the disk radial direction.

  In the media drive unit 11, a recording processing system, a playback processing system, a servo system, and the like are provided in addition to the recording / reproducing head system using the optical head 22 and the magnetic head 23 and the disk rotation driving system using the spindle motor 21. As a recording processing system, there are a part for performing EFM modulation and ACIRC encoding at the time of recording on a conventional minidisc, and a part for performing RLL (1-7) PP modulation and RS-LDC encoding at the time of recording to the next generation MD1 and next generation MD2. Provided.

  In addition, the reproduction processing system includes a part that performs demodulation and ACIRC decoding corresponding to EFM modulation during reproduction of a conventional mini-disc, and a demodulation that supports RLL (1-7) PP modulation during reproduction of the next generation MD1 and next generation MD2. (RLL (1-7) demodulation based on data detection using PR (1, 2, 1) ML and Viterbi decoding), and a part for performing RS-LDC decoding are provided.

  Information detected as reflected light by the laser irradiation of the optical head 22 on the disk 90 (photocurrent obtained by detecting the laser reflected light with a photodetector) is supplied to the RF amplifier 24. The RF amplifier 24 performs current-voltage conversion, amplification, matrix calculation, and the like on the input detection information, and performs reproduction RF signal, tracking error signal TE, focus error signal FE, groove information (on the disc 90) as reproduction information. (ADIP information recorded by track wobbling) and the like are extracted.

  At the time of reproducing a conventional mini disc, the reproduced RF signal obtained by the RF amplifier is processed by the EFM demodulator 27 and the ACIRC decoder 28 via the comparator 25 and the PLL circuit 26. The reproduced RF signal is binarized by the EFM demodulator 27 to form an EFM signal sequence, EFM demodulated, and further subjected to error correction and deinterleave processing by the ACIRC decoder 28. If it is audio data, it will be in the state of ATRAC compression data at this time. At this time, the selector 29 is selected on the conventional mini-disc signal side, and the demodulated ATRAC compressed data is output to the data buffer 30 as reproduced data from the disc 90. In this case, the compressed data is supplied to the audio processing unit 19 in FIG.

  On the other hand, at the time of reproduction of the next generation MD1 or the next generation MD2, the reproduction RF signal obtained by the RF amplifier passes through the A / D conversion circuit 31, the equalizer 32, the PLL circuit 33, and the PRML circuit 34 to RLL (1-7 The signal is processed by the PP demodulator 35 and the RS-LDC decoder 36. The reproduction RF signal is obtained by the RLL (1-7) PP demodulator 35 by obtaining reproduction data as an RLL (1-7) code string by data detection using PR (1, 2, 1) ML and Viterbi decoding. The RLL (1-7) demodulation process is performed on the RLL (1-7) code string. Further, the RS-LDC decoder 36 performs error correction and deinterleave processing.

  In this case, the selector 29 selects the next generation MD1 or next generation MD2 side, and the demodulated data is output to the data buffer 30 as reproduction data from the disk 90. At this time, the demodulated data is supplied to the memory transfer controller 12 of FIG.

  The tracking error signal TE and the focus error signal FE output from the RF amplifier 24 are supplied to the servo circuit 37, and the groove information is supplied to the ADIP decoder 38.

  The ADIP decoder 38 limits the band of the groove information by a bandpass filter and extracts a wobble component, and then performs FM demodulation and biphase demodulation to extract an ADIP address. The extracted ADIP address, which is absolute address information on the disc, is passed through the MD address decoder 39 in the case of the conventional mini disc and the next generation MD1, and the next generation MD address decoder in the case of the next generation MD2. 40 to the drive controller 41.

  The drive controller 41 executes a predetermined control process based on each ADIP address. The groove information is returned to the servo circuit 37 for spindle servo control.

  The servo circuit 37 generates spindle error signals for CLV servo control and ZCAV servo control based on an error signal obtained by, for example, integrating the phase error with the reproduction clock (PLL clock at the time of decoding) with respect to the groove information. Generate.

  Further, the servo circuit 37 performs various servo control signals based on the spindle error signal, the tracking error signal, the focus error signal supplied from the RF amplifier 24 as described above, or the track jump command, access command, etc. from the drive controller 41. (Tracking control signal, focus control signal, thread control signal, spindle control signal, etc.) are generated and output to the motor driver 42. That is, various servo control signals are generated by performing necessary processing such as phase compensation processing, gain processing, and target value setting processing on the servo error signal and command.

  The motor driver 42 generates a predetermined servo drive signal based on the servo control signal supplied from the servo circuit 37. The servo drive signal here includes a biaxial drive signal (two types of focus direction and tracking direction) for driving the biaxial mechanism, a sled motor drive signal for driving the sled mechanism, and a spindle motor drive signal for driving the spindle motor 21. It becomes. By such servo drive signals, focus control and tracking control for the disk 90 and CLV control or ZCAV control for the spindle motor 21 are performed.

  When a recording operation is performed on the disk 90, high-density data or normal ATRAC compressed data from the audio processing unit 19 is supplied from the memory transfer controller 12 shown in FIG.

  At the time of recording on the conventional mini disc, the selector 43 is connected to the conventional mini disc side, and the ACIRC encoder 44 and the EFM modulator 45 function. In this case, if it is an audio signal, the compressed data from the audio processing unit 19 is interleaved and an error correction code added by the ACIRC encoder 44 and then EFM-modulated by the EFM modulating unit 45. The EFM modulation data is supplied to the magnetic head driver 46 via the selector 43, and the magnetic head 23 applies a magnetic field based on the EFM modulation data to the disk 90 to record the modulated data.

  At the time of recording on the next generation MD1 and the next generation MD2, the selector 43 is connected to the next generation MD1 / next generation MD2 side, and the RS-LCD encoder 47 and the RLL (1-7) PP modulation section 48 function. In this case, the high-density data sent from the memory transfer controller 12 is subjected to interleaving and RS-LDC error correction code addition by the RS-LCD encoder 47 and then to the RLL (1-7) PP modulation unit 48. RLL (1-7) modulation.

  The recording data modulated into the RLL (1-7) code string is supplied to the magnetic head driver 46 through the selector 43, and the magnetic head 23 applies the magnetic field to the disk 90 based on the modulation data. Is recorded.

  The laser driver / APC 49 causes the laser diode to perform a laser emission operation during reproduction and recording as described above, but also performs a so-called APC (Automatic Laser Power Control) operation. Specifically, although not shown, a detector for laser power monitoring is provided in the optical head 22, and this monitor signal is fed back to the laser driver / APC 49. The laser driver / APC 49 compares the current laser power obtained as a monitor signal with a preset laser power and reflects the error in the laser drive signal, thereby outputting the laser power output from the laser diode. Is controlled to be stabilized at the set value. Here, as the laser power, values as the reproduction laser power and the recording laser power are set in a register in the laser driver / APC 49 by the drive controller 41.

  Based on an instruction from the system controller 18, the drive controller 41 controls each component so that each of the above operations (access, various servos, data writing, and data reading) is executed. In addition, each part enclosed with the dashed-dotted line in FIG. 15 can also be comprised as a circuit of 1 chip | tip.

  By the way, when the disc 90 has a data track recording area and an audio track recording area set in advance as shown in FIG. 6, the system controller 18 determines whether the data to be recorded / reproduced is an audio track or a data track. In response to this, the drive controller 41 of the media drive unit 11 is instructed to access based on the set recording area.

  In addition, it is possible to perform control for permitting recording of only one of PC data and audio data and prohibiting recording of other data on the loaded disk 90. That is, control can be performed so that PC data and audio data are not mixed.

  Therefore, the disk drive apparatus 10 shown as this specific example can realize compatibility between the conventional mini disk, the next generation MD1, and the next generation MD2 by having the above-described configuration.

  Of course, the disk drive apparatus 10 shown as this specific example may be configured as a recording apparatus that executes only the above-described recording operation or a reproducing apparatus that executes only the above-described reproducing operation.

  Further, in the main play mode, the disc drive apparatus 10 may display search items for searching for content data according to attribute information as shown in FIG.

  The search items in the main play mode are “Track” for directly specifying and reproducing the content recorded on each track on the disc 90, and “Group” for reproducing the content in a grouped state. ”,“ Artist ”for playback for each content player,“ Album ”for playback for each title of the album to which the content belongs,“ Bookmark ”for playback of bookmarked content, It is configured by “Program” or the like for reproducing content programmed for the reproduction order or the like. That is, this main play mode first displays on the display unit 62 search items for searching according to attribute information attached to each content such as groups, bookmarks, performers, albums, etc. On the other hand, the user is prompted to specify one of the search items.

  This attribute information is acquired under the control of the system controller 18 when the disk 90 is inserted, and stored in a memory or the like (not shown).

  In this main play mode, “Artist” and “Album” are classification items that can be specified only at the time of reproduction of the next generation MD1 and the next generation MD2, and therefore the system controller 18 uses the disc inserted in the drive. You may make it change the display of these main play modes, after identifying 90 types.

  Next, the content data reproduction procedure in the main play mode will be described with reference to FIG. First, in step S11, the system controller 18 controls the display unit 62 to display the above-described classification items included in the hierarchy 1 shown in FIG. Here, when any of the classification items in the hierarchy 1 is designated by the operation of the operation unit 61 including the jog dial 76 by the user, the process proceeds to step S12. Hereinafter, an example will be described in the case where “Artist” is designated among the classification items.

  Next, in step S12, the system controller 18 determines the attribute information as the classification item to the content player. Then, the system controller 18 classifies the content for each performer, and displays it as items in the hierarchy 2 as shown in FIG. When one performer is designated via the operation unit 61, the content files of the performer are displayed as a list as a hierarchy 2 '. If one piece of content is directly selected in the hierarchy 2 ', the process proceeds to step S13.

  Incidentally, if an item included in level 2 is selected in step S12, a content list of level 2 'is expanded on the display unit 62 as shown in FIG. The user designates desired content from the content list in the hierarchy 2 ′ using the jog dial 76. In such a case, content data other than the expanded item can be easily specified by rotating the jog dial 76 in the same manner, and the expansion of the previously selected item can be closed. That is, since the item that has not been selected is not expanded, the content list that configures the item is not displayed on the display unit 62. Further, when the content list in the hierarchy 2 'is expanded, it may be indented and expanded so that it can be easily distinguished from the items in the hierarchy 2. Furthermore, the content list in the hierarchy 2 'may be arranged in the order of the recorded music or may be arranged in the order of 50 sounds.

  By switching the display content on the display unit 62 according to the item selected in this way, it becomes possible to improve the visibility of a user who desires to select a desired item.

  In step S13, the main play mode is determined. In addition, the start track of the content reproduced under the main play mode is also determined in the same manner. The system controller 18 may perform control so that reproduction is automatically started in such a state. When the reproduction is started, the process proceeds to step S14.

  In step S14, the content directly selected in step S12 is reproduced. If the stop button 74 is pressed in step S14, or if a certain time has elapsed, the process proceeds to step S15.

  In step S15, the reproduction is stopped or ended, and the user continues to wait for an operation through the operation unit 61.

  Incidentally, when the rotation operation of the jog dial 76 is received in step S14 or step S15 described above, the process returns to step S12, and direct music selection is prompted again under the classification item specified in the hierarchy 1. That is, convenience can be improved by prompting direct music selection again under the same classification item.

  Similarly, if the jog dial 76 is pressed for a short time in step S14 or step S15, the process returns to step S11, and the selection of the classification item is prompted by showing the level 1 of the main play mode again.

  Note that direct music selection can be performed for other selection items in the hierarchy 1 based on the same procedure as in FIG.

  Next, a content data search procedure and a reproduction order registration procedure in the disk drive device 10 to which the present invention is applied will be described with reference to FIG.

  First, in step S21, each search item in the main play mode as shown in FIG. 16 is displayed. In the main play mode, when “Program” is designated, the process proceeds to step S22.

  When the process proceeds to step S22, the display unit 62, as shown in FIG. 21 (a), a track mode for determining the playback order in units of tracks on which the content data is recorded, and each group in which these are assembled in advance The user is prompted to select one of the group modes for determining the playback order. The user selects one of the modes by operating the operation unit 61. Incidentally, when each mode is displayed on the display unit 61, it may be displayed indented from the search item “Program” as shown in FIG. In step S22, when the stop button 74 is pressed and input, the process may return to step S21.

  Next, the process proceeds to step S23, and as shown in FIG. 21B, a start screen indicating that the first program song is registered is displayed. In this start screen, a number n (program number) below “PGM” is added to inform the user that content data of the nth playback order will be registered. Incidentally, n is set as 1 in the first search operation.

  That is, “PGM01>” in FIG. 21B means that the content data / group of the first song is to be registered. If it is determined in step S23 that the user has rotated the jog dial 76 and if the group mode is selected in step S22, the process proceeds to step S24. If it is determined in step S23 that the user has rotated the jog dial 76 and the track mode is selected in step S22, the process proceeds to step S27.

  When the process proceeds to step S24, a group list is displayed on the display unit 62 as shown in FIG. In step S <b> 24, the user can select a desired group by operating the operation unit 61. Further, by visually recognizing the group list displayed on the display unit 62, a group search can be realized.

  When a desired group is designated via the operation unit 61 in step S24, the process proceeds to step S25, and the designated group is registered as a group to be reproduced first. The registered reproduction order is stored in a memory or the like (not shown) under the control of the system controller 18.

  Next, the process proceeds to step S26, and 1 is added to the program number n. If n is set as 1 at the time of the first search operation, the program number n is 2.

  Next, the process proceeds to step S23 again, and similarly “PGMn>” is displayed on the display unit 62 to indicate that the group of the nth song is to be registered. When the program number n is set as 2 in the previous step S26, “PGM02>” is displayed on the display unit 62. Similarly, when the process proceeds to step S24, registration of the second group to be reproduced is prompted. When a desired group is designated by the user via the operation unit 61, the designated group is registered as the second playback in step S25, and by adding 1 to the program number in step S26, The program number n is set to 3.

  Registration of the group to be reproduced after the third can also be executed by repeating the operations of steps S24 to S26.

  If the rotation operation of the jog dial 76 is accepted during the initial search operation (when the program number n is 1) in step S23, and if the track mode is selected in step S22, step The process moves to S27 and a start screen indicating that the first program is registered is displayed as shown in FIG. 21 (b). In this start screen, a number n (program number) below “PGM” is added to inform the user that content data of the nth playback order will be registered. Incidentally, n is set as 1 in the first search operation.

  That is, “PGM01>” in FIG. 21B means that the content data / group of the first song is to be registered. If it is determined in step S23 that the user has rotated the jog dial 76 and if the group mode is selected in step S22, the process proceeds to step S24. If it is determined in step S23 that the user has rotated the jog dial 76 and the track mode is selected in step S22, the process proceeds to step S27.

  When the process proceeds to step S27, a search item list is displayed on the display unit 62 as shown in FIG. In step S <b> 27, the user can specify a desired search item by operating the operation unit 61.

  If “Track” is designated via the operation unit 61 in step S27, the process proceeds to step S28, and a list of contents corresponding to each track is displayed on the display unit 62 as shown in FIG. 22B. Is done. In this case, when a desired content is selected, the process proceeds to step S25, and the designated content data is registered as the content to be reproduced first. The registered reproduction order is stored in a memory or the like (not shown) under the control of the system controller 18.

  Next, the process proceeds to step S26, and 1 is added to the program number n. If n is set as 1 at the time of the first search operation, the program number n is 2.

  Next, the process proceeds to step S23 again, and similarly “PGMn>” is displayed on the display unit 62 to indicate that the content of the nth song is to be registered. When the program number n is set as 2 in the previous step S26, “PGM02>” is displayed on the display unit 62. Similarly, when the process proceeds to step S27, a search item list is displayed on the display unit 62 as shown in FIG.

  If “Group” is designated via the operation unit 61 in step S27, the process proceeds to step S29, and a group list in which content data is aggregated in advance is displayed as shown in FIG. To display.

  Here, when a desired group is designated by the user, the content data belonging to the group is expanded. FIG. 22D shows an example of developing a content data list belonging to “Group B” when “Group B” is designated from the group list. Incidentally, when another group is designated again in the state shown in FIG. 22D, the currently developed “Group B” is closed and the content data belonging to the newly designated group is developed. You may do it.

  In this way, the user can easily search for each content data belonging to the user by designating a desired group using the operation unit.

  If “Artist” is designated through the operation unit 61 in step S27, a list of content performers is displayed on the display unit 62 as shown in FIG. 23A (step S30). When a player desired by the user is designated, the content data belonging to the player is expanded. FIG. 23 (b) shows an example of developing a content list belonging to a designated performer when a desired performer is designated from the performer list. Incidentally, in the state shown in FIG. 23 (a), when another group is designated again, the content list of the currently developed player is closed and the content list belonging to the newly designated player is displayed. You may make it expand | deploy.

  In this way, the user can easily search for each piece of content data belonging to the user by designating a desired performer using the operation unit. Incidentally, a similar content search can be realized for “Album” (step S31).

  If content data belonging to a desired group or performer is designated by the user via the operation unit 61, the content designated in step S25 is registered to be reproduced second, and step S26 is entered. In this case, the program number n is set to 3 by adding 1 to the program number.

  Further, it can be executed based on the same procedure when registering the content to be reproduced after the third time.

  Incidentally, when the stop button 74 is pressed in step S28 to step S31 shown in FIG. 20, the process may proceed to step S27. Further, when the stop button 74 is pressed in each of step S21, step S23, step S24, and step S27, the initial setting may be returned.

  As described above, the disc drive apparatus 10 can automatically register the playback order so as to be higher in rank than the previously designated content data / group. For this reason, at the time of program playback, the content data specified in advance is played back in order.

  That is, in the disk drive device 10 to which the present invention is applied, even when a variety of attribute information (player, album, etc.) corresponding to the next generation MD1, next generation MD2, etc. is added to each content, it is displayed. The search can be easily performed only by executing a designation operation via the operation unit 61 on the content / group list displayed on the unit 62. At the same time, since the reproduction order can be registered, the burden of labor can be reduced, and the effect of not spending extra time for program registration can be obtained.

It is a figure explaining the specification of next generation MD1 and next generation MD2, and the conventional minidisc. It is a figure explaining the RS-LDC block with BIS of the error correction method in the next generation MD1 and the next generation MD2. It is a figure explaining BIS arrangement | positioning in 1 recording block of next generation MD1 and next generation MD2. It is a schematic diagram explaining the area structure on the disk surface of next generation MD1. It is a schematic diagram explaining the area structure on the disk surface of next generation MD2. It is a schematic diagram explaining the area configuration on the board surface when audio data and PC data are mixedly recorded on the next-generation MD1 disc. It is a schematic diagram explaining the data management structure of next generation MD1. It is a schematic diagram explaining the data management structure of next generation MD2. It is a schematic diagram explaining the relationship between the ADIP sector structure and data block of next generation MD1 and next generation MD2. It is a schematic diagram which shows the ADIP data structure of next generation MD2, and the ADIP data structure of next generation MD1. It is a schematic diagram explaining the modification of the data management structure of next generation MD2. FIG. 2 is a block diagram illustrating a disk drive device that performs recording and reproduction with compatibility with the next generation MD1 and the next generation MD2. It is a figure which shows the structural example of the operation part provided in the housing | casing exterior, and a display part. It is a figure for demonstrating about the detail of a display part. It is a block diagram for demonstrating the media drive part of a disk drive apparatus. It is a figure for demonstrating per main play mode. It is a flowchart for demonstrating about the procedure of the direct music selection in main play mode. It is a figure for demonstrating about each hierarchy in main play mode. It is a figure which shows the example which expands the content list in a lower hierarchy on the display part, when the item contained in each hierarchy is selected. 5 is a flowchart showing a content data search procedure and a playback order registration procedure in the disk drive device. It is a figure which shows the example of a display of a display part at the time of registering a reproduction | regeneration order per group. It is a figure which shows the example of a display of a display part at the time of registering a reproduction | regeneration order per content. It is a figure which shows the other example of a display of the display part at the time of registering reproduction | regeneration order per content.

Explanation of symbols

  10 disk drive device, 11 media drive unit, 12 memory transfer controller, 13 cluster buffer memory, 14 auxiliary memory, 15, 16 USB interface, 17 USB hub, 18 system controller, 19 audio processing unit, 61 operation unit, 62 display unit 90 discs

Claims (8)

In a disc playback apparatus for playing back content data recorded on a disc-shaped recording medium in accordance with a registered playback order,
Attribute information acquisition means for acquiring attribute information relating to content data recorded on each track of the disc-shaped recording medium;
Display means for displaying a search item for searching the content data according to the acquired attribute information, and displaying content data belonging to the specified search item;
A designation means for designating search items and content data displayed on the display means;
A disc playback apparatus comprising: registration means for automatically registering a playback order so as to be higher than content data previously specified via the specifying means. The display means displays search items obtained by collecting the content data into an arbitrary group and / or search items corresponding to album titles and player names as attribute information related to the content data. Item 4. A disk reproducing device according to item 1. 2. The disc reproducing apparatus according to claim 1, wherein the display means switches display contents in accordance with a search item designated via the designation means. In a disc playback apparatus for playing back content data recorded on a disc-shaped recording medium in accordance with a registered playback order,
Attribute information acquisition means for acquiring attribute information relating to content data recorded on each track of the disc-shaped recording medium;
Display means for displaying search items for searching the content data in accordance with the acquired attribute information;
A specifying means for specifying a search item displayed on the display means;
A disc playback apparatus comprising: registration means for automatically registering a playback order so as to be ranked higher than content data belonging to a search item previously specified via the specifying means. In a disc playback method for playing back content data recorded on a disc-shaped recording medium in accordance with a registered playback order,
An attribute information acquisition step of acquiring attribute information related to content data recorded on each track of the disc-shaped recording medium;
A first display step for displaying a search item for searching the content data in accordance with the acquired attribute information;
A second display step for displaying content data belonging to the designated search item;
A disc playback method comprising: a registration step of automatically registering a playback order so as to be higher in rank than the previously specified content data in the second display step. In the first display step, a search item in which the content data is assembled into an arbitrary group and / or a search item corresponding to an album title and a player name as attribute information related to the content data are displayed. 6. A disk reproducing method according to claim 5. 6. The disc reproducing method according to claim 5, wherein, in the second display step, display contents are switched in accordance with a search item designated in the first display step. In a disc playback method for playing back content data recorded on a disc-shaped recording medium in accordance with a registered playback order,
An attribute information acquisition step of acquiring attribute information related to content data recorded on each track of the disc-shaped recording medium;
A display step for displaying a search item for searching the content data according to the acquired attribute information;
And a registration step of automatically registering a playback order so that the content data belongs to the previously specified search item in the display step.

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