KR20030008730A - Recording/reproducing apparatus capable of creating play-list and method therein - Google Patents

Abstract

PURPOSE: A recording/reproducing device capable of composing a play list and a method for composing the play list in the device are provided to reproduce files according to an already composed play list even in case of changing a recording/reproducing device by storing the list to a recording medium not to compose a new list whenever driving the recording/reproducing device. CONSTITUTION: A recording/reproducing device capable of composing a play list includes a recording/reproducing part(210) for carrying out reading or recording operation of file system information from or to a recording medium, a flash memory part(220) for storing the read file system information, a play list composing part(230) for composing a play list in the file system information, a manipulation panel part(240) for receiving commands for the play list composition from a user, and a control part(250) for outputting commands to record changed file system information to a recording medium to the recording/reproducing part when inputting a command to finish the composition of the play list via the manipulation panel part or withdrawing the recording medium.

Description

Recording / playback apparatus capable of creating a playlist and a method of creating a playlist on the apparatus

The present invention relates to a recording / playback apparatus capable of creating a playlist and a method of generating a playlist in the apparatus, and more particularly, to a recording / playback apparatus capable of creating a playlist for a media file stored on a recording medium. And a method of generating a playlist in the apparatus.

With the development of digital technology, research has continued to store more information in one recording medium. As a result of this research, about 1.2Gbytes can be recorded on one optical disk. In addition, as the density of recording media increases, development of a device capable of recording / reproducing data on the recording media continues.

Recently, a compact disc having a diameter of 32 mm and having a large capacity of 500 megabytes in comparison with its size has been developed (Digital Convergence Disc: DCD). Since the DCD is smaller in size than the current CD but has a relatively large recording capacity, a device different from the conventional CD player is required to record / reproduce data on the DCD. As the size of the DCD, a recording medium used in a device capable of driving the DCD, is reduced in size, the size of a digital convergence disk player (DCDP) is also reduced.

However, while storage media such as CD, DCD, etc. have the advantage of being able to record a large number of data, it is inconvenient to select specific data from the recorded data. In particular, when a user wants to play only a few specific files mainly from a media file stored on a CD or DCD, the process of finding a desired file from a huge media file takes a lot of effort and time.

1 is a block diagram showing the configuration of a conventional recording / reproducing apparatus.

Referring to FIG. 1, the conventional recording / reproducing apparatus 100 includes a flash memory unit 120 for temporarily storing data to be read from or recorded on the recording medium 110, such as a CD. A control unit 130 for performing a read operation, a data recording operation, a control operation for a component, a control operation according to a command input by a user, a codec / amp unit 140 for outputting audio, a recording / reproducing apparatus ( A display unit 150 for displaying the status and operation details of the 100, a key input unit 160 for receiving a command from a user, and an interface unit 170 for providing data transmission means with a personal computer.

The operation of the conventional recording / reproducing apparatus 100 will be described below. The recording / reproducing apparatus 100 is connected to the personal computer 180 through the interface unit 170. A user may access a file stored in the flash memory unit 120 using an application program installed in the personal computer 180. In this case, the user may check only the file stored in the flash memory unit 120. In addition, the file stored in the personal computer 180 may be stored in the recording medium 110, but a separate directory may not be created.

Therefore, in the conventional recording / reproducing apparatus 100, a playlist created when a playlist for a file stored in the recording medium 110 is created using the personal computer 180 is stored in the flash memory unit 120. FIG. do. However, since the playlist is stored in the flash memory unit 120, there is a problem that the created playlist is destroyed when a situation such as powering off of the CD player, DCDP, or ejecting the disk occurs.

On the other hand, a method of recording a playlist created for each CD, DCD, etc. that a user has by attaching a separate playlist memory to a CD player, DCDP, etc. has a problem that wastes excessive memory. have.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a recording / reproducing apparatus and a method of creating a playlist, which can enable a playlist in which the created playlist does not disappear even in the event of ejection of the disc or disconnection of the power supply.

1 is a block diagram showing the configuration of a conventional recording / reproducing apparatus;

2 is a diagram showing the configuration of a recording / reproducing apparatus capable of creating a play list according to the present invention;

3 is a block diagram showing the configuration of an embodiment of a recording / playback apparatus capable of creating a play list according to the present invention;

4 is a block diagram showing an internal configuration of a register unit provided in the engine unit of the DCDP;

5 is a plan view showing one surface of a DCD divided by recording area;

6 is a flowchart of an embodiment of a play list creation method according to the present invention;

7 is a flowchart of another embodiment of a method of creating a playlist according to the present invention, and

8 is a flowchart illustrating a process of editing a previously created play list.

In order to solve the above technical problem, a recording / reproducing apparatus capable of creating a play list according to the present invention includes a read operation of file system information from a recording medium capable of recording / reproducing and recording of the file system information on the recording medium. A recording / reproducing unit which performs an operation; A memory unit for storing the read file system information; A play list creating unit which creates a play list in the file system information; An operation panel unit for receiving a command for creating the play list from a user; And a control unit which outputs a command to the recording / reproducing unit to record the changed file system information on the recording medium when the play list creation command is input through the operation panel unit and / or when the recording medium is withdrawn. Have

The file system information includes at least one of a number of data recorded on the recording medium, a physical location of each data, a title, a size, a recording date, and a previously created play list.

The play list creating unit may include: a play list detecting unit detecting whether a play list directory exists in the file system information; If the playlist directory does not exist in the file system information, one or more subdirectories are created in the playlist directory and / or the playlist directory, and the one or more subdirectories are created in the playlist directory and / or the subdirectory. And a play list generation unit for creating a play list for the file selected from the user among the recorded files.

Preferably, the playlist generating unit records location information and / or file path of the file selected by the user in the playlist directory and / or the subdirectory.

Preferably, the number of recordable files can be set for each of the play list directory and / or the sub-directory, and if the number of the recordable files set for the sub-directory is exceeded, Create a subdirectory and record the playlist in the playlist directory created separately.

Preferably, when the user inputs deletion of the file selected by the user, the controller outputs a control signal for deleting the file selected by the user to the play list creating unit, and the play list creating unit plays the corresponding file. Remove from the list.

On the other hand, the play list generation method according to the invention, (a) reading the file system information from the recording medium; (b) generating the playlist directory in the file system information when a playlist directory does not exist in the file system information; And (c) recording the file system information on the recording medium.

Step (b) may include: (b1) creating a play list for the file selected by the user from among the files recorded on the recording medium; And (b2) recording the created playlist in the playlist directory.

In the step (b1), the location information and / or file path where the file selected by the user exists is recorded in the play list directory. The user can also select a file that is playing.

On the other hand, step (b) creates at least one subdirectory in the play list directory, and in this case, step (b) includes (b3) selecting the file selected by the user from among the files recorded on the recording medium. Creating a playlist for the; And (b4) recording the created playlist in the subdirectory existing in the playlist directory. Further, step (b3) records the location information and / or file path in which the file selected by the user exists in the subdirectory in the playlist directory.

In addition, in step (b), the user may set the number of recordable files for the subdirectory. In this case, when the number of recordable files set for the subdirectory is exceeded, a separate subdirectory is generated, and the play list is recorded in the separately created subdirectory.

Preferably, the play list creation step removes the file selected by the user from the play list when receiving a delete command for the file from the user.

According to the present invention, since the playlist created by the user is stored in the recording medium, it is not necessary to provide a separate memory in the player, and the created playlist can be preserved even when the power supply is disconnected or the recording medium is released.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the recording / playback apparatus and play list creation method capable of creating a play list according to the present invention.

2 is a diagram showing the configuration of a recording / reproducing apparatus capable of creating a play list according to the present invention.

Referring to FIG. 2, the recording / reproducing apparatus 200 capable of creating a play list according to the present invention performs a reading operation of file system information from a recording / reproducing storage medium and a recording operation of file system information on the storage medium. A recording / playback unit 210 to perform, a memory unit 220 for storing the read file system information, a play list creating unit 230 for creating a play list in the file system information, and a command for creating a play list from a user Command to write the changed file system information to the storage medium upon input of a play list creation completion command and / or withdrawal of the storage medium through the operation panel unit 240 and the operation panel unit 240 that receive the input of the data; The control unit 250 outputs to the playback unit 210.

3 is a block diagram showing the configuration of an embodiment of a recording / reproducing apparatus capable of creating a play list according to the present invention.

Referring to FIG. 3, the recording / reproducing apparatus 200 (DCDP) capable of creating a play list according to the present invention includes an engine unit 210 and a host 340. The engine unit 210 performs a reading operation of the file system information from the DCD 500 capable of recording / reproducing and a recording operation of the file system information in the DCD. The host 340 may be connected to the engine unit 210 to control the engine unit 210, and may be connected to the user computer 360 to control the engine unit 210.

The engine unit 210 includes a DCD deck unit 305, a DCD servo unit 310, a buffer unit 315, an engine memory unit 320, a register unit 325, an engine control unit 330, and an engine interface unit 335 ). When the DCD deck unit 305 is inserted into the engine unit 210, the DCD deck unit 305 is controlled by the engine control unit 330 to perform data recording and reproducing operations for the DCD. The engine controller 330 exchanges data with the controller 250 of the host 340 through the engine interface 335. The DCD servo unit 310 drives the DCD deck unit 305 under the control of the engine controller 330. The DCD deck unit 305 reads data from the DCD under the control of the engine controller 330.

The buffer unit 315 temporarily stores data to be recorded and reproduced when data is recorded and reproduced with respect to the DCD, and may use a static random access memory (SRAM). File system information is stored in the buffer unit 315. The engine memory unit 320 is used to store code values and control data of various command words promised between the DCD, the engine unit 210, and the engine unit 210 and the host 340. flash RAM). The engine controller 330 controls the DCD deck unit 305, the DCD servo unit 310, and the buffer unit 315. The engine interface unit 335 provides an interface between the engine unit 210 and the host 340.

The host 340 includes a memory unit 220, a play list creating unit 230, an operation panel unit 240, a control unit 250, an audio output unit 345, a power supply unit 350, and an interface unit 355. do.

The memory unit 220 receives and stores file system information stored in the buffer unit 315 of the engine unit 210.

The playlist creation unit 230 is a playlist detection unit 230a that detects the presence of a playlist in the file system information, and a playlist directory 230 and / or one in the playlist directory when the playlist does not exist in the file system information. And a play list generator 230b for generating a play list for the file selected by the user from among the files recorded in the DCD in the play list directory and / or the sub directory.

The file system information includes the number of data recorded in the DCD, the physical location of each data, the title, the size, the recording date, and the created playlist.

The playlist generating unit 230b records location information, a file path, and the like of a file selected by a user in a playlist directory and / or a subdirectory. On the other hand, the number of recordable files can be set for each of the playlist directory and / or subdirectories. Also, if the number of recordable files set for any subdirectory is exceeded, a separate subdirectory is created. In this case, the excess files are recorded in the playlist directory generated separately.

The operation panel unit 240 receives a command for creating the play list and a command for the operation of the DCDP 200 from a user and outputs the command to the controller 250.

The controller 250 is connected to the engine interface 335 to control the DCDP 200 and the function of accessing the engine 210 to record and read data as well as to reproduce the read data. In addition, the controller 250 controls the DCDP 200 to process the reproduction / recording of the file according to the attribute information of the data read in file units.

In addition, when a deletion for a specific file is received from a playlist created by the user, the controller 250 outputs a control signal for deleting the file selected by the user to the playlist creation unit 230. When the controller 250 receives a command for deleting a file selected by the user from the playlist, the playlist generator 230 deletes the corresponding file from the playlist.

The audio output unit 345 outputs audio data reproduced from the DCD.

The power supply unit 350 includes a main battery (not shown) and a backup battery (not shown). The main battery provides a power source for driving the DCDP 200. The backup battery provides power for restoring data remaining in the memory unit 220 to the DCD after the power is turned off.

The interface unit 355 is an interface between the DCDP 200 and the personal computer 360. The interface unit 355 may be a serial or parallel port including a universal serial bus (USB), and a wireless interface device such as a Bluetooth chip may be employed. . The interface unit 355 provides a means for enabling data transfer between the DCDP 200 and the user computer 200.

4 is a block diagram showing an internal configuration of a register unit provided in the engine unit of the DCDP. Referring to FIG. 4, the register unit 325 includes a control register 325a, a status register 325b, a byte counter register 325c, and a data register 325d, and each register is used to communicate with the host 340. Used. The host 340 selects a register to be accessed from among the registers of the register unit 325 according to the value of two bits of the address bits for the DCD interface (DPI_ADD0 and DPI_ADD1). The host 340 performs a write operation on the control register 325a, and the engine 210 performs a read operation.

The control register 325a has the function control and interface interrupt enable / disable values recorded by the host 340. The host 340 can only read the status register 325b, and the engine unit 210 can both read and write the status register 325b. The status register 325b holds status information and interrupt reason information.

The host 340 and the engine unit 210 may perform both a write and a read operation with respect to the byte counter register 325c. However, the host 340 can write to the byte counter register 325c only when the BUSY bit of the status register 325b is clear, and the data DATA bit of the status register 325b is set. Only return valid information is read from the byte counter register 325c.

The byte counter register 325c contains a byte count for the next command, data, or status mode transfer. With respect to the data register 325d, the host 340 and the engine unit 210 can perform both read and write operations. However, the host 340 writes the data in the data register 325d to transmit data to the engine unit 210 during the command and data out phases. In addition, the host 340 reads the data register 325d to transmit data from the engine unit 210 during the status and data in phases.

Between the host 340 and the engine unit 210, a physical layer physically connecting the host 340 and the engine unit 210, and information between the host 340 and the engine unit 210. A data-link layer defining a method used for the exchange, a command layer recording commands related to data for the DCD to control data accessed by the engine unit 210, and file data / There are four layers of connection state including an application layer including meta data mapping and a user interface. The connection status of the four layers existing between the host 340 and the engine unit 210 is such that file data / metadata recorded in the DCD driven by the engine unit 210 is smoothly transmitted to the host 340 to be processed. To help.

5 is a plan view showing one surface of the DCD divided by recording areas.

Referring to FIG. 5, the DCD 500 has a disc shape, and has a hole 510, a unique number recording area 520, a data recording area 530, and a file system recording area 540 in a circumferential direction from the center of the disc. Are separated.

The hole 510 is formed in the central portion of the DCD 500 to mitigate shaking while the DCD 500 is rotated. The unique number recording area 520 of the DCD 500 is formed in a ring type so as to occupy a predetermined range around the hole 510. In this unique number recording area 520, a unique number assigned to each DCD 500 is recorded in order to distinguish each DCD 500 from each other. In addition, the unique number recording area 520 includes identifiable information on one side and the other side of one DCD 500 according to the characteristics of the DCD 500 which is a double-sided recordable optical recording medium. The data recording area 530 is an area where files including music data, document data, image data, and the like are recorded, and occupies most of the capacity of the DCD 500.

The file system recording area 540 is formed in the outermost part of the DCD 500 in a ring shape, and information about each file recorded in the data recording area 530 of the DCD 500, namely, file system information and directory. The information is recorded. The file system information is a file size, a file name, a recording date and time of a file recorded in the data recording area 530 of the DCD 500, a recorded file format, directory information of the recorded data, and the last modification of the file. Say the date and time, the playlist. Directory information refers to a space separated to store files related to each other in a group. Unrelated files are not mixed by being stored in different directories.

6 is a flowchart of an embodiment of a play list creation method according to the present invention.

Referring to FIG. 6, when the DCD 500 is inserted into the DCD deck unit 305, the DCD deck unit 305 reads file system information from the DCD 500 (S600). The read file system information is stored in the buffer unit 315. When the control unit 250 provided in the host unit 340 outputs a control command to transmit file system information to the engine unit 210, the engine control unit 330 hosts the host 340 through the engine interface unit 335. Transfer to the memory unit 220.

When the controller 250 receives a command for creating a playlist from the user, the controller 250 outputs a control signal to the playlist detection unit 230a to check whether a playlist exists. The play list detector 230a checks whether a play list exists in the file system information loaded in the memory 220 (S610). If there is no play list, the play list generator 230b generates a play list (S620). In operation S620, the playlist generation unit 230b may generate a playlist directory and further generate one or more subdirectories in the playlist directory.

If it is determined in step S610 that the playlist exists, the playlist generation unit 230b stores the path of the file selected by the user and / or the physical address in the DCD 500 of the file selected by the user in the playlist directory or a subdirectory. The play list is generated by recording (S630). The generated play list is recorded in the file system information loaded in the memory unit 220.

When the user receives a command for completing the creation of the playlist, the DCDP 200 is powered off, or the DCD 500 is withdrawn from the DCD deck unit 305, the controller 250 includes the created playlist. A control signal is output to record the file system information in the DCD 500, and the file system information is recorded in the DCD 500 by the DCD deck unit 305 (S640).

In operation S640, the file system information stored in the memory unit 220 is transmitted to the engine memory unit 320. The control unit 250 outputs a control signal for recording the file system information stored in the engine memory unit 320 to the engine control unit 330 through the engine interface unit 335.

7 is a flowchart of another embodiment of a method of creating a play list according to the present invention.

Referring to FIG. 7, when the DCD 500 is inserted into the DCD deck unit 305, the DCD deck unit 305 reads file system information from the DCD 500 (S700). The read file system information is stored in the buffer unit 315. When the control unit 250 provided in the host unit 340 outputs a control command to transmit file system information to the engine unit 210, the engine control unit 330 hosts the host 340 through the engine interface unit 335. Transfer to the memory unit 220.

When the user inputs a command for creating a play list, the controller 250 outputs a control signal to the play list detector 230a to check whether a play list exists. The play list detection unit 230a checks whether a play list or a play list directory exists in the file system information loaded in the memory unit 220 (S705). If no playlist or playlist directory exists, the playlist generating unit 230b generates a playlist directory (S710). Meanwhile, the playlist generating unit 230b may generate one or more subdirectories in the playlist directory (S715).

When creating a playlist directory and a subdirectory, the user can set the number of files that can be recorded for each directory. That is, the playlist generation unit 230b confirms whether the number of files is set to the user when generating each directory (S720). If the user wants to limit the number of files that can be recorded for each directory, the user inputs the number of files for each directory using the operation panel 240 (S725). In the case of a directory where the number of files is not set, the number of files that can be recorded is not limited.

If it is confirmed that a playlist exists in the file system information or a new playlist directory is created, the controller 250 checks whether a file currently recorded in the DCD 500 is played (S730). If the user wants to add the file being played to the existing playlist directory while the file is being played (S740), the user inputs a playlist creation command using the operation panel 240.

The play list generating unit 230b checks whether the number of recordable files is set in the play list directory to record the path of the file currently being played and / or the physical address in the DCD 500 (S750). If the number of recordable files is set in the playlist directory to be recorded, a new directory is created (S755) or another playlist directory is selected. Meanwhile, the user can select a specific playlist directory and / or subdirectory.

When the playlist directory is determined, the playlist generating unit 230b records the path of the file currently being played and / or the physical address in the DCD 500 in the determined playlist directory (S760). The play list generated or changed in operation S760 is recorded in the file system information loaded in the memory unit 220.

When the user receives a command for completing the creation of the playlist, the DCDP 200 is powered off, or the DCD 500 is withdrawn from the DCD deck unit 305, the controller 250 includes the created playlist. A control signal is output to record the file system information in the DCD 500, and the file system information is recorded in the DCD 500 by the DCD deck unit 305 (S765).

In operation S765, the file system information stored in the memory unit 220 is transmitted to the engine memory unit 320. The control unit 250 outputs a control signal for recording the file system information stored in the engine memory unit 320 to the engine control unit 330 through the engine interface unit 335.

If the file currently recorded in the DCD 500 is not being reproduced in step S730, the user browses a list of files existing in the DCD 500 (S735) and selects a file to be recorded in the play list (S745). ). In operation S745, the user may sequentially select a predetermined number of files. When the user selects a file to be recorded in the playlist, a playlist is created by performing steps S750 to S765 as described above.

On the other hand, the user can edit the previously created playlist. 8 is a flowchart illustrating a process of editing a previously created play list.

Referring to FIG. 8, when a user inputs a command for editing a playlist through the operation panel unit 240 (S800), the controller 250 confirms whether to perform a delete operation or a change operation on the playlist. (S810). After the user selects a delete operation for the playlist, the user searches the playlist directory and selects a specific file to be deleted (S820). When the user inputs a delete command, the playlist generation unit 230b removes a path of a corresponding file and / or a physical address in the DCD 500 from the playlist directory selected by the user (S830).

When the user selects a change to the playlist in step S810, the user selects a playlist directory to be changed (S840). The user changes the order of the files existing in the selected directory (S850). The change of the order of the files existing in the directory means the change of the play order in the reproduction of the directory.

The process of editing the play list described with reference to FIG. 8 is performed by the play list creation unit 230 after reading the file system information in the DCD 500 and loading it into the memory unit 220 as described with reference to FIG. 7. . Also, the deletion process may be performed while the play list is being changed, and vice versa. The playlist changed by the editing of the playlist performed in steps S800 to S850 is located in the file system information and is finally recorded in the DCD 500.

Meanwhile, the recording / reproducing apparatus capable of creating a play list and the play list generating method according to the present invention have been described using DCDP as an example. However, the technical idea of the present invention may be applied to a recording / reproducing apparatus capable of recording to a recording medium. Can be. Therefore, in the case of a player driving an optical disc capable of recording, a play list can be created by allocating a separate play list recording area to the optical disc. In this case, each component need not be implemented separately from the engine unit and the host.

According to the recording / playback apparatus and the play list creation method capable of creating a play list according to the present invention, a file system including the number of data recorded on a recording medium, the physical position of each data, a title, a size, a recording date, and the like. By creating a playlist in the information and storing it on the recording medium, there is no need to create a new playlist every time the recording / playback apparatus is driven, and since the playlist is recorded on each recording medium, the playback / recording apparatus is changed by changing the recording / playback apparatus. Even in this case, it is possible to play the file according to the created play list.

In addition, since the path of each file included in the play list and / or the physical address in the recording medium are stored in the file system information, the recording / reproducing apparatus does not need to have a separate memory for storing the play list.

Although the present invention has been described in detail through the representative embodiments, those skilled in the art to which the present invention pertains can make various modifications without departing from the scope of the present invention with respect to the embodiments described above. Will understand. Therefore, the scope of the present invention should not be limited to the embodiments described, but should be defined by the claims below and equivalents thereof.

Claims (18)

A recording / reproducing unit for reading out file system information from a recording medium capable of recording / reproducing data and recording the file system information on the recording medium; A flash memory unit for storing the read file system information; A play list creating unit which creates a play list in the file system information; An operation panel unit for receiving a command for creating the play list from a user; And And a control unit which outputs a command to the recording / reproducing unit to record the file system information, which has been changed when the play list creation completion command is input through the operation panel unit and / or when the recording medium is withdrawn, onto the recording medium. And a recording / playback apparatus capable of creating a playlist. The method of claim 1, The file system information may include at least one of a number of data recorded on the recording medium, a physical location of each data, a title, a size, a recording date, and a previously created playlist. / Playback device. The method of claim 1, The play list creating unit may include: a play list detecting unit detecting whether a play list exists in the file system information; And Create a playlist directory and / or one or more subdirectories in the playlist directory if the playlist does not exist in the file system information and are recorded on the record carrier in the playlist directory and / or the subdirectory; And a play list generator for creating a play list for the file selected by the user from among the files. The method of claim 3, wherein And the play list generating unit records the position information and / or file path of the file selected by the user in the play list directory and / or the sub directory. The method of claim 3, wherein And a number of the recordable files for each of the play list directory and / or the sub directory. The method of claim 5, If the number of recordable files set for the subdirectory is exceeded, create a separate subdirectory, And a play list is recorded in the separately created sub-directory. The method of claim 3, wherein If the user enters delete for the selected file, The control unit outputs a control signal for deleting a file selected by a user to the play list creating unit, And the play list creating unit deletes the corresponding file from the play list. (a) reading file system information from a recording medium capable of recording / reproducing data; (b) generating the playlist directory in the file system information when a playlist directory does not exist in the file system information; And (c) recording the file system information on the recording medium. The method of claim 8, Step (b) may include: (b1) creating a play list for the file selected by the user from among the files recorded on the recording medium; And (b2) recording the created playlist in the playlist directory. The method of claim 9, In the step (b1), the location information and / or file path in which the file selected by the user exists is recorded in the play list directory. The method of claim 10, And the file selected by the user is a file being played. The method of claim 8, In step (b), at least one subdirectory in the playlist directory is generated. The method of claim 12, Step (b) comprises the steps of: (b3) creating a playlist for the file selected by the user from among the files recorded on the recording medium; And (b4) recording the created playlist in the subdirectory existing in the playlist directory. The method of claim 13, In step (b3), the location information and / or file path in which the file selected by the user exists is recorded in the subdirectory in the playlist directory. The method of claim 12, In the step (b), the number of recordable files for the sub directory can be set. The method of claim 15, If the number of recordable files set for the subdirectory is exceeded, create a separate subdirectory, And storing the playlist in the separately created subdirectory. The method according to claim 9 or 13, The playlist generation step may include removing the file selected by the user from the playlist when a delete command for the file is received from the user. The method of claim 8, And the file system information includes at least one of a number of data recorded on the recording medium, a physical location of each data, a title, a size, a recording date, and a previously created playlist.