JP2006059400A - Recording / playback device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To continuously reproduce video data recorded over a plurality of recording media by integrating recording/reproducing processing depending on each of a plurality of recording media into recording/reproducing processing to a single virtual recording medium in a recording/reproducing device corresponding to the plurality of recording media. <P>SOLUTION: The recording/reproducing device comprises a recording/reproducing control section 101 for allocating a virtual address to each sector by dividing video data into sector units; and a sector list conversion section 104 for creating a mapping table 105 for associating a virtual address allocated to each sector with an actual address on the recording medium corresponding to each sector. The actual address of the recording medium on which data in each sector are recorded is managed by the virtual address allocated to each sector. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a recording / reproducing apparatus, and more particularly, to an apparatus that performs recording / reproduction by treating a plurality of recording media as one virtual recording medium.

  In recent years, a DVD (Digital Versatile Disk) recorder has started to spread as a device for recording a broadcast program, replacing a conventional VTR (Video Tape Recorder). A DVD recorder generally corresponds to a plurality of different types of recording media, and has a plurality of write / read devices that perform data access, that is, data writing and data reading, to the respective recording media. For example, these writing / reading apparatuses correspond to DVD drives, hard disk drives, smart media drives, and the like.

  In the DVD recorder, when a program is recorded, the user selects one of these drives, and the drive selected by the user records on a recording medium loaded in the drive. Also, in the DVD recorder, if the recording area of the recording medium in the selected drive runs out during program recording, if there is another recording medium with the remaining recording area, the recording medium is automatically recorded on the other recording medium. The continuation of the program may be recorded. In the DVD recorder, when the program recorded in this way is reproduced, it is necessary to perform the reproducing operation by controlling the data reading from a plurality of recording media.

  Normally, when a program is recorded on only one recording medium, the playback device may acquire information of video data to be played back from one recording medium and perform playback control based on the information. Requires only building a reproduction control system for the recording medium.

  However, when reproducing a program recorded across a plurality of recording media as described above, the information of the video data to be reproduced is a plurality of information, particularly in a portion corresponding to a “joint” across the recording medium of the program. It must be obtained from the recording medium. Therefore, it is necessary to perform reproduction control for a plurality of recording media, and in addition to a reproduction control system for normal individual recording media, a mechanism for linking between the reproduction control systems for a plurality of recording media is constructed. There is a need.

  Specifically, since the types of recording media that are subject to data access are diverse, a linkage mechanism that links these control systems after constructing multiple data access control systems corresponding to each type of recording medium Need to be prepared in an amount corresponding to the combination, and it is required to construct a more complicated control system.

  In addition, it is expected that the number of recording media corresponding to recording / reproducing apparatuses such as DVD recorders will increase in the future, and in order to cope with this, the control system in such recording / reproducing apparatuses is expected to become more complicated. The

  In addition, when fast-forward playback or reverse playback is performed, data access to the recording medium may be controlled so as to go back and forth continuously across the seam portion of the program recorded across the recording medium. It may be necessary. In such a case, it is clear that the load on the regeneration control is further increased.

  Furthermore, in recent years, an increasing number of devices are equipped with a simultaneous recording / playback function and a chase playback function for simultaneously playing back a recorded program while recording a program being broadcast. In such a device, recording / reproduction control is simultaneously performed on a plurality of different recording media, and the recording / reproduction control system for the recording medium becomes more complicated.

  Therefore, in a recording / reproducing apparatus corresponding to a plurality of types of recording media, in order to simplify the recording / reproducing control system to be constructed, a method for efficiently controlling the recording / reproducing operations for a plurality of different recording media is established. Is important.

  Conventionally, as an apparatus for performing reproduction control of data across a plurality of different recording media, for example, there is an apparatus disclosed in Document 1.

This device reproduces data recorded on each recording medium as a reproduction control method when performing shuffle reproduction or program reproduction across a plurality of music recording media such as CD (Compact Disk) and MD (Mini Disk). By automatically generating a data playback unit, that is, a playlist that lists tracks and files, and performing playback control based on identification information for each data playback unit assigned to the playlist, A method of performing various playback operations without realizing the difference is realized.
JP 2000-149386 A

  In the conventional configuration described in the literature described above, the data reproduction unit handled in the reproduction list is a track in music data such as CD and MD, and this corresponds to a chapter unit in video data such as a DVD.

  Therefore, when reproducing video data such as a DVD, in response to a chapter change request from the user, the chapter to be accessed is changed from that of one recording medium without being aware of the difference in the recording medium. It is possible to execute a chapter transfer operation for transferring to that of the other recording medium.

  However, in the case where a continuous playback operation of video data that performs general playback processing, including special playback such as fast-forward playback and reverse playback, is required, in the conventional configuration, When the playback of the video data of a chapter is finished and the video data of the next chapter is played back, it is necessary to read the video data corresponding to the next chapter once, and the video on the screen is temporarily stopped. For this reason, there is a problem that it is not possible to execute a continuous reproduction operation in which video data recorded across different recording media is displayed on the screen without interruption.

  The present invention has been made to solve the above-described conventional problems, and efficiently controls recording / reproduction with respect to a plurality of recording media, and at the same time, video recorded over the plurality of recording media. It is an object of the present invention to provide a recording / reproducing apparatus capable of continuously reproducing data regardless of the recording medium.

  The invention according to claim 1 of the present application is a recording / reproducing apparatus for recording and reproducing data with respect to a plurality of types of recording media, wherein the real addresses on the various types of recording media are converted into one continuous virtual address. And a recording / reproduction control unit for controlling recording and reproduction of data on each recording medium by the virtual address, and writing of data to each recording medium based on an instruction from the recording / reproduction control unit. And a recording medium processing unit that performs reading.

  According to a second aspect of the present invention, in the recording / reproducing apparatus according to the first aspect, the recording / reproducing control unit divides the data to be recorded into sectors, and performs the virtual operation for each sector. Refer to the real recording medium sector list that assigns addresses and lists the real addresses for each sector on each recording medium and the virtual recording medium sector list that lists the virtual addresses assigned to each sector. Thus, recording and reproduction of data with respect to each recording medium is controlled.

  The invention according to claim 3 of the present application is the recording / reproducing apparatus according to claim 2, further comprising a sector list conversion unit for converting the virtual recording medium sector list into the actual recording medium sector list.

  The invention according to claim 4 of the present application is the mapping table for storing a mapping table for associating the virtual address on the virtual recording medium sector list with the real address on the real recording medium sector list in the recording / reproducing apparatus according to claim 2 It has a storage part.

  The invention according to claim 5 of the present application is the recording / reproducing apparatus according to claim 2, further comprising a virtual recording medium sector list storage unit that stores a plurality of virtual recording medium sector lists for a series of data to be recorded. is there.

  According to claim 6 of the present application, in the recording / reproducing apparatus according to claim 4, the mapping table storage unit can store a plurality of mapping tables corresponding to one set of virtual recording medium sector list and real recording medium sector list. It is what.

  The invention according to claim 7 of the present application is the recording / reproducing apparatus according to claim 2, wherein each recording medium is selected from a plurality of recording media with reference to the actual recording medium sector list, and the recording medium processing is performed. A recording medium selection unit that controls data access to a plurality of recording media performed by the recording unit, wherein the recording / reproduction control unit refers to the virtual recording medium sector list and instructs the recording medium selection unit to perform recording / reproduction To do.

  According to the first aspect of the present invention, there is provided a recording / reproducing apparatus for recording and reproducing data on a plurality of types of recording media, wherein real addresses on the plurality of recording media are converted into one continuous virtual type. A recording / reproduction control unit that controls recording and reproduction of data with respect to each recording medium based on the virtual address, so that recording / reproduction processing depending on each of the plurality of recording media is performed in a single manner. Thus, the recording / reproducing process for the virtual recording medium is integrated. Accordingly, it is possible to efficiently control recording and reproduction for a plurality of recording media, and at the same time, to continuously reproduce video data recorded across the plurality of recording media regardless of the difference in the recording media. . The software algorithm implemented in the recording / playback control unit can be easily constructed because it is sufficient to describe it in a format for performing recording / playback control on a single recording medium.

  According to the invention of claim 2 of the present application, in the recording / reproducing apparatus according to claim 1, the data to be recorded is divided into sectors, the virtual address assigned to each sector, and each recording Since the real address for each sector on the medium is associated, the recording medium can be switched in units of sectors.

  According to the invention of claim 3 of the present application, in the recording / reproducing apparatus according to claim 2, the virtual recording medium sector list, which is a list of virtual addresses assigned to the sectors, is represented by a list of real addresses for each sector. Since it has a sector list conversion unit for converting to a certain real recording medium sector list, at the time of reproduction, data of addresses listed in the list are sequentially read based on the real recording medium sector list corresponding to the virtual recording medium sector list Accordingly, video data recorded across a plurality of recording media can be easily reproduced.

  According to the invention of claim 4 of the present application, in the recording / reproducing apparatus according to claim 2, the mapping table associating the virtual address on the virtual recording medium sector list with the real address on the real recording medium sector list is stored. Therefore, the conversion from the virtual recording medium sector list to the actual recording medium sector list can be easily performed using the mapping table.

  According to the invention of claim 5 of the present application, in the recording / reproducing apparatus according to claim 2, a plurality of virtual recording medium sector lists for a series of data to be recorded can be stored. The recording / reproduction control can be performed on the video data of a plurality of programs.

  According to the invention according to claim 6 of the present application, in the recording / reproducing apparatus according to claim 4, a plurality of mapping tables corresponding to one set of virtual recording medium sector list and real recording medium sector list can be stored. The process of converting the plurality of virtual recording medium sector lists corresponding to the video data of the program to the corresponding real recording medium sector list can be easily performed using the mapping table corresponding to the video data of each program.

  According to the invention of claim 7 of the present application, in the recording / reproducing apparatus according to claim 2, a plurality of recording media are selected from a plurality of recording media by referring to the actual recording medium sector list. Recording medium selection section for controlling data access to the recording medium of the recording medium, the recording medium switching section for switching the recording medium processing section for performing data access to the corresponding recording medium due to the influence of the change of the corresponding recording medium in the recording / reproducing apparatus Only the selection unit can be used, which leads to improvement in reusability of the entire control system in the recording / reproducing apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram for explaining a recording / reproducing apparatus according to Embodiment 1 of the present invention.
The recording / reproducing apparatus 100 according to the first embodiment acquires video data, divides the data into sectors, records the data on a recording medium for each sector, and sets the real address of the recording medium on which the data of each sector is recorded. This is managed in association with a virtual address assigned to the sector, thereby enabling continuous reproduction of video data recorded across a plurality of recording media.

  That is, the recording / reproducing apparatus 100 includes a recording / reproduction control unit 101, a sector list conversion unit 104, a virtual recording medium sector list storage unit 115, a mapping table storage unit 116, a recording medium selection unit 106, a first A recording medium processing unit 107 and a second recording medium processing unit 111 are provided.

  More specifically, the recording / reproducing control unit 101 controls the recording / reproducing operation of the video data in the recording / reproducing apparatus 100 based on the recording command Rrec or the reproducing command Rply by the user. Specifically, the recording / playback control unit 101 records a series of video data Vd of a broadcast program on a recording medium or plays back video data of a program recorded on the recording medium. A software algorithm is implemented, and the software algorithm is described in a format independent of a specific recording medium. Then, the recording / reproducing control unit 101 assigns a virtual address defined in the recording / reproducing apparatus to each sector to create or update the virtual recording medium sector list 102, and the virtual recording medium With reference to the sector list 102, software processing for controlling recording and reproduction is advanced. Here, the virtual recording medium sector list 102 is obtained by sequentially arranging the addresses of virtual recording media assigned to the data SVd corresponding to each sector after dividing the video data of the program into sectors. However, the address is a virtually assigned address in the recording / reproducing apparatus, and is independent of the address on the actual recording medium. Here, the data length of the sector is assumed to be 2 kilobytes, but is not limited to this.

  At the time of recording, the sector list conversion unit 104 refers to the real address notified from the recording medium selection unit 106 and the virtual address on the virtual recording medium sector list 102 created by the recording / playback control unit 101 to determine the virtual address The mapping table 105 that associates the real address with the real address is created or updated, and at the time of reproduction, the real recording medium sector list 103 is created from the virtual recording medium sector list 102 based on the correspondence defined in the mapping table 105. . Here, the real recording medium sector list 103 is associated with addresses corresponding to the sectors shown in the virtual recording medium sector list 102, and addresses corresponding to the sectors on the real recording medium are in the same format. They are arranged sequentially.

  The virtual recording medium sector list storage unit 115 holds the virtual recording medium sector list 102 created or updated by the recording / playback control unit 101, and can store a plurality of virtual recording medium sector lists corresponding to various programs. Is.

  The mapping table storage unit 116 holds the mapping table 105 created or updated by the sector list conversion unit 104, and can store a plurality of mapping tables corresponding to various programs.

  At the time of recording, the recording medium selection unit 106 specifies a recording medium to be actually operated according to an instruction from the recording / playback control unit 101, and corresponds to the corresponding one of the first and second recording medium processing units 107 and 111. Instruct operation. Also, the recording medium selection unit 106 refers to the actual recording medium sector list 103 at the time of reproduction, specifies the recording medium to be actually operated, and corresponds to one of the first and second recording medium processing units 107 and 111. An operation instruction is given to the player to output the video data RVd read from the recording medium to the reproduction display unit.

  The first recording medium processing unit 107 includes a writing processing unit 108 that performs data writing processing on the recording medium (X) 110, and a reading processing unit 109 that reads data on the recording medium (X) 110. It is composed of The second recording medium processing unit 111 includes a writing processing unit 112 that performs data writing processing on the recording medium (Y) 114, and a reading processing unit 113 that reads data on the recording medium (Y) 114. It is composed of

  The recording / reproducing apparatus of the first embodiment has the first and second recording medium processing units. However, the actual recording / reproducing apparatus such as a DVD recorder is compatible with the DVD recorder. The number of recording medium processing units corresponding to the number of types of recording media to be recorded is provided.

Next, the operation will be described.
FIG. 2 shows a flow of operations for recording a program in the recording / reproducing apparatus 100 of the first embodiment.

  In the recording / reproducing apparatus 100 of this embodiment, when a program recording request Rrec is generated from the user, the recording request Rrec is notified to the recording / reproducing control unit 101.

  Then, the recording / playback control unit 101 acquires the broadcast video data Vd and divides it into sectors. The recording / playback control unit 101 first assigns a virtual address defined in the recording / playback apparatus to the first sector, and creates a virtual recording medium sector list 102 (step S201). In addition, the recording / reproducing apparatus 100 outputs the divided video data SVd to the recording medium selection unit 106.

  Subsequently, the recording / reproducing apparatus 100 confirms the recording medium selected by the user (step S202), and notifies the recording medium selection unit 106 which recording medium is to be recorded. Here, it is assumed that the user has selected the recording medium (X) 110. The recording medium selection unit 106 drives the first recording medium processing unit 107 that writes and reads data to and from the recording medium (X) 110, so that data can be written on the recording medium (X) 110. It is checked whether there is (capacity) (step S202a). If there is a writable area, the first recording medium processing unit 107 records the video data SVd of the first sector on the recording medium (X) 110 (step S203). On the other hand, if there is no writable area, the recording medium selection unit 106 drives the second recording medium processing unit 111 to write data on the recording medium (Y) 114 which is another recording medium. It is checked whether there is a sufficient area (free capacity) (step S204). If there is a writable area, the recording medium selection unit 106 changes the recording medium to be written to the recording medium (Y) 114 (step S205), and the second recording medium processing unit 111 The video data SVd of the first sector is recorded on the recording medium (Y) 114 (step S203). On the other hand, as a result of checking the free space in step S204, if there is no data writable area (free space) on the recording medium (Y) 114, the recording medium selection unit 106 cannot write. An error is notified to the recording / playback control unit 101 (step S206), and the recording / playback control unit 101 ends the program recording process.

  The recording medium selection unit 106, after the first sector video data is written on the recording medium by the first recording medium processing unit 107 or the second recording medium processing unit 111, is recorded on the recording medium corresponding to the first sector video data. The real address (real address of the write destination) is acquired from any recording medium processing unit (step S207), and the real address information Rad is notified to the sector list conversion unit 104. This real address is an address unique to each recording medium and can identify the recording medium.

  The sector list conversion unit 104 refers to the received real address corresponding to the head sector and the virtual address assigned to the head sector in the virtual recording medium sector list 102, and the real address of the head sector and its virtual address Mapping table 105 is generated (step S208). However, if there is already a mapping table, such as mapping between real and virtual addresses for the sector after the first sector, update the mapping table to add the correspondence to the sector to be mapped to the existing mapping table Is performed (step S208).

  Thereafter, the recording / reproducing apparatus 100 determines whether or not the next sector following the head sector exists (step S208a). If the next sector exists, the processing from step S201 to step S208a is performed. Is done. On the other hand, if the result of determination in step S208a is that there is no next sector, the recording / playback control unit 101 stores the created virtual recording medium sector list 102 in the storage unit 115 (step S209), and sector list conversion unit The mapping table 105 created by 102 is stored in the mapping table storage unit 116 (step S210).

  FIG. 3 shows a flow of an operation of reproducing the recorded program of the recording / reproducing apparatus 100 of the first embodiment.

  In the recording / reproducing apparatus 100 of this embodiment, when a program reproduction request Rply is generated from the user, the reproduction request Rply is notified to the recording / reproduction control unit 101.

  Then, the recording / playback control unit 101 searches and extracts the virtual recording medium sector list 102 corresponding to the corresponding program from the storage unit 115 (step S301), and further stores the mapping table 105 corresponding to the program. It searches and extracts from the part 116 (step S302).

  The recording / playback control unit 101 extracts the list 102 and the table 105 and then requests the sector list conversion unit 104 to read the video data of the sector to which the virtual address on the virtual recording medium sector list 102 is assigned. (Step S303).

  Subsequently, the sector list conversion unit 104 creates the real recording medium sector list 103 of the sector to be read based on the extracted virtual recording medium sector list 102 and the mapping table 105, and reading is requested. The real address of the received video data is acquired (step S304). In addition, when there is already an actual recording medium sector list, such as a read process for the sector after the first sector, an address on the actual recording medium corresponding to the current target sector is added to the list. Update is performed (step S304).

  After the real address corresponding to the read target sector is acquired, the recording medium selection unit 106 refers to the acquired real address and identifies the corresponding recording medium (step S305). Here, it is assumed that the video data corresponding to the read target sector is specified to be recorded on the recording medium (X) 110.

  Then, the recording medium selection unit 106 drives the first recording medium processing unit 107, refers to the corresponding real address Xad on the recording medium (X) 110, and selects the video data RVd recorded at the address Xad. Read (step S306) and output to the display unit. In the display unit, the read video data RVd is displayed.

  When it is specified that the video data corresponding to the read target sector is recorded on the recording medium (Y) 114, the recording medium selection unit 106 drives the second recording medium processing unit 111, The corresponding real address Yad on the recording medium (Y) 114 is referred to, and the video data RVd recorded at the address Yad is read (step S306).

  Thereafter, the sector list conversion unit 104 determines whether or not there is video data of the next sector following the read target sector based on the virtual recording medium sector list 102 (step S307). When the video data of the next sector exists, the recording / playback control unit 101 specifies the virtual address assigned to the next sector (step S308), and the playback processing of the recording / playback apparatus 100 specifies the virtual address. It requests to read the video data that has been read (step S303). On the other hand, when the video data of the next sector does not exist, the playback process of the recording / playback apparatus 100 ends.

  In the recording / playback control unit 101 of the present embodiment, playback of video data recorded on an actual recording medium is performed by performing the processing from step S303 to step S308 on all sectors corresponding to the program to be played back. Done.

  In such program video data playback processing, the video data of the next sector following the sector to be read is different from the recording medium on which the video data of the sector to be read is recorded. In the case of being recorded above, since the recording medium selection unit 106 refers to the specific address, since the recording medium selection unit 106 adds a unique address to each recording medium. The recording medium processing unit to be driven is changed. As a result, it is possible to continuously reproduce a program in which video data is recorded across a plurality of different recording media.

  As described above, in the recording / reproducing apparatus 100 of the first embodiment, the recording / reproducing control unit 101 that divides video data into sectors and assigns virtual addresses to the sectors, and the virtual that is assigned to the sectors. A sector list conversion unit 104 that creates a mapping table 105 that associates each address with a real address on the recording medium corresponding to each sector, and sets the real address of the recording medium on which the data of each sector is recorded, Since management is performed by the virtual address assigned to the sector, the recording / reproducing process depending on each of the plurality of recording media is integrated into the recording / reproducing process for a single virtual recording medium, Continuous reproduction of video data recorded across a plurality of recording media is possible. The software algorithm implemented in the recording / playback control unit 101 can be easily constructed because it can be described in a format for performing recording / playback control on a single recording medium.

  In this embodiment, the first recording medium processing unit 107 that writes and reads data to and from one recording medium (X) 110 and the writing and reading of data to and from other types of recording media (Y) 114 are performed. And a second recording medium processing unit 111 for performing data writing, the recording medium processing unit for writing data in accordance with the free space in the recording medium, and the recording medium processing unit for reading data in the recording medium corresponding to each sector Therefore, the effect of changing the corresponding recording medium in the recording / reproducing apparatus 100 can be limited to only the recording medium selection unit 106 that switches the recording medium processing unit. It leads to improvement of reusability as a whole.

  The recording / reproducing apparatus according to the present invention enables continuous reproduction of video data recorded across a plurality of recording media, and is equipped with DVD media, hard disk drives, and the like that have various standards. The DVD recorder is useful for realizing functions such as recording and playback over a plurality of media, simultaneous recording playback using a plurality of media, and chasing playback.

It is a figure explaining the recording / reproducing apparatus 100 by Embodiment 1 of this invention. It is a figure explaining the operation | movement of the recording / reproducing apparatus 100 of the said Embodiment 1, and has shown the flow of the operation | movement which records the video data of a program on a some recording medium. It is a figure explaining operation | movement of the recording / reproducing apparatus 100 of the said Embodiment 1, and has shown the flow of the operation | movement which reproduces | regenerates the video data of the program recorded on the some recording medium.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Recording / reproducing apparatus 101 Recording / reproducing control part 102 Virtual recording medium sector list 103 Real recording medium sector list 104 Sector list conversion part 105 Mapping table 106 Recording medium selection part 107 1st recording medium process part 108,112 Recording process part 109, 113 Reading processing unit 110 Recording medium (X)
111 Second recording medium processing unit 114 Recording medium (Y)
115 Virtual recording medium sector list storage unit 116 Mapping table storage unit Rad real address information Rply playback request Rrec recording request RVd read video data SVd video data in units of sectors Vd video data Xad real address Yad recording Real address for medium (Y)

Claims (7)

A recording / reproducing apparatus for recording and reproducing data on a plurality of types of recording media,
A recording / reproduction control unit that replaces real addresses on the various recording media with one continuous virtual address, and controls recording and reproduction of data with respect to each recording medium by the virtual address;
A recording medium processing unit for writing and reading data to and from each recording medium based on an instruction from the recording / reproducing control unit,
And a recording / reproducing apparatus. The recording / reproducing apparatus according to claim 1,
The recording / playback control unit
Divide the data to be recorded on a sector basis and assign the virtual address to each sector.
Referring to the real recording medium sector list that lists the real addresses for each sector on each recording medium and the virtual recording medium sector list that lists the virtual addresses assigned to each sector, Control the recording and playback of data on the recording medium,
And a recording / reproducing apparatus. The recording / reproducing apparatus according to claim 2,
A sector list conversion unit for converting the virtual recording medium sector list into the actual recording medium sector list;
And a recording / reproducing apparatus. The recording / reproducing apparatus according to claim 2,
A mapping table storage unit that stores a mapping table that associates virtual addresses on the virtual recording medium sector list with real addresses on the real recording medium sector list;
And a recording / reproducing apparatus. The recording / reproducing apparatus according to claim 2,
A virtual recording medium sector list storage unit for storing a plurality of virtual recording medium sector lists for a series of data to be recorded;
And a recording / reproducing apparatus. The recording / reproducing apparatus according to claim 4.
The mapping table storage unit
A plurality of mapping tables corresponding to one set of virtual recording medium sector list and real recording medium sector list can be stored.
And a recording / reproducing apparatus. The recording / reproducing apparatus according to claim 2,
A recording medium selection unit that refers to the actual recording medium sector list, selects individual recording media from a plurality of recording media, and controls data access to the plurality of recording media performed by the recording medium processing unit; ,
The recording / reproduction control unit refers to the virtual recording medium sector list and instructs the recording medium selection unit to perform recording / reproduction;
And a recording / reproducing apparatus.

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