JP2003203467A - Data processor and data processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily extract contents data such as musical piece data from broadcast data such as radio broadcast data to enhance the convenience of viewers. <P>SOLUTION: The data processor receives the broadcast data, stores the received broadcast data, references a play list to extract the contents data included in the broadcast data from the stored broadcast data, and deletes the broadcast data except for the extracted contents data. Thus, the data processor can extract the contents data from the broadcast data. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing device and method capable of storing content data included in broadcast data.

[0002]

2. Description of the Related Art Conventionally, in order to listen to content data, such as music data, which is broadcast by radio broadcasting, it is necessary to listen to the broadcasting in real time. Further, it is necessary to store the radio broadcast in a recording medium such as a tape cassette or a disk cartridge and listen to the recorded contents after the broadcast time.

[0003]

In either case,
In order for the viewer to record his / her favorite music data or to know the music title, he / she needs to listen to the entire program, and thus the viewer needs to listen to the program for a long time, which is annoying. . In addition, the viewer needs to check the air beforehand with newspapers, magazines, etc., which is troublesome.

Further, even if a viewer tries to record music data while listening to a radio broadcast in real time,
It is difficult to record from the beginning of a song without omission.

The present invention has been made in view of the above problems, and an object thereof is to be able to extract content data such as music data more easily than broadcast data such as radio broadcasting, and It is to provide a data processing device and method capable of improving convenience.

Another object of the present invention is to provide a data processing device and method capable of automatically erasing unnecessary content data contained in broadcast data and efficiently using the storage means.

Still another object of the present invention is to provide a data processing device and method capable of simplifying the work of selecting the content data to be stored by the user by displaying the content data in the order of repeatedly broadcasted content data. It is in.

Still another object of the present invention is to provide a recording medium having a computer program recorded thereon and a computer program capable of achieving the above object.

[0009]

In order to solve the above-mentioned problems, a data processing apparatus according to the present invention comprises a receiving means for receiving broadcast data, a storage means for storing the broadcast data received by the receiving means, An extracting unit that extracts the content data included in the broadcast data from the broadcast data stored in the storing unit, and an erasing unit that erases the broadcast data excluding the content data extracted by the extracting unit are provided.

Further, the data processing method according to the present invention receives broadcast data, saves the received broadcast data, extracts content data included in the broadcast data from the saved broadcast data, and extracts the extracted content. Delete broadcast data excluding data.

Further, the recording medium according to the present invention is a recording medium in which a computer program that can be processed by a computer is recorded, and the computer program recorded in this recording medium or distributed via a network is: The method comprises the steps of receiving broadcast data, storing the received broadcast data, extracting content data included in the broadcast data from the stored broadcast data, and deleting the broadcast data excluding the extracted content data.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A data processing system to which the present invention is applied will be described below with reference to the drawings.

As shown in FIG. 1, a data processing system 1
May access the server device 10 in which playlists of music data used in radio programs broadcast by the broadcasting station 2 are stored and the server device 10 to obtain the playlists of radio programs recorded by the user. Terminal device 20
With. The server device 10 and the terminal device 20 are IS
DN (Integrated Services Digital Network) line,
CATV (Cable Television) line, optical cable line,
It is connected via a network 3 such as xDSL (x Digital Subscriber Line), and TCP / IP (transmis
sion control protocol / internet protocol), FTP
Data is exchanged according to a transmission protocol such as (file transfer protocol).

In this data processing system 1, the server device 10 has a playlist in which song names of music data used in radio programs, artist names, broadcast start times, broadcast pay times, etc. are associated, and the terminal device The playlist of a desired radio program can be acquired by accessing the server device by the server 20. Then, the terminal device 20 that has acquired the playlist
Allows you to identify your favorite song data during the program by looking at the playlist. Of course, the data processing system 1 can be used not only for music data used for radio programs but also for music data and video data used for television programs broadcast from broadcasting stations.

Next, the server device 10 constituting the data processing system 1 will be described with reference to FIG.
The server device 10 is a device owned by a provider or the like that provides the system, and has a configuration similar to that of a normal computer. Specifically, this server device 10
The receiving unit 11 that receives the data transmitted from the terminal device 20 via the network 2, the transmitting unit 12 that transmits the data to the terminal device 20 via the network 2, and the music data used for the broadcast program A storage unit 13 in which information is stored, and an input unit 14 for inputting information about music data used for a program broadcast in the storage unit 13.
And a search unit 16 that searches the storage unit 13 and extracts information related to music data in response to a request from the terminal device 20.

The storage unit 13 is composed of, for example, a large-capacity hard disk, and has identification data of music data broadcast on each channel, a performer name of the music data, a broadcast start date and time of the music data, and a broadcast end of the music data. A database is constructed in which data relating to music data such as date and time are associated with each other. Of course, in addition to this, the lyricist name, composer name, record company name, etc. of the music data may be stored.

The input unit 14 is for inputting to the storage unit 13, for each piece of music data used in a broadcast program, data relating to the music data to be stored in the storage unit 13.

From the input unit 14, for example, the identification data of the music data broadcast on each channel, the name of the performer of the music data, the start date and time of the music data broadcast, the end date and time of the music data broadcast, etc. can be obtained using a keyboard or the like. It is entered manually.

Further, from the input unit 14, for example, identification data of music data used in each program by voice recognition,
The performer name, songwriter name, composer name, record company name, start time, end time, and the like of the music data are input. That is, the input unit 14 is a radio receiving unit that receives broadcast data broadcast by the broadcast station 2 and identifies the type of audio data at predetermined time intervals by voice recognition.
Music pieces, conversations, etc. are classified, music piece data is extracted from the music pieces, music characteristics of the music piece data are digitized, and the broadcast start date and time and the broadcast end date and time of this music data are extracted in association with each other. Then, the input unit 14 accesses the music database in which the identification data of the music data and the performer name are associated with the quantified musical characteristics of the music data, and the quantized music of the music data included in the broadcast data is accessed. And the musical characteristics of the music data in the accessed music database are compared. Then, when the digitized musical characteristics match, the input unit 14 extracts the identification data of the music data and the performer name from the music database, and the music data included in the broadcast data and the broadcast start date and time of this music data. The storage unit 1 correlates the ending date and time of the broadcast, the identification data of the music data extracted from the music database, and the performer name.
Save in the database of 3.

Furthermore, when the broadcast data includes identification data of music data used in a program and identification data of a performer, the input unit 14 extracts identification data of music data used in a program. Then, the start time, the end time, and the like of the broadcast of the music data are associated with the extracted identification data and stored in the database of the storage unit 13.

Thus, a database as shown in Table 1 below is constructed in the storage unit 13.

[0022]

[Table 1]

That is, in this database, the identification data of the music data, the broadcast start date and time, the broadcast end date and time, and the performer are associated for each channel, and it is possible to determine when the music data used in the broadcast was broadcast. It can be identified.

When the terminal device 20 makes an access request, the determination unit 15 determines whether the user who has made an access is a registered user of the system 1 based on the user identification data transmitted from the terminal device 20. To judge. Then, the determination unit 15 permits the use of the system 1 when the user is a registered user of the system 1, and notifies that the user registration is required to use the system 1 when the user is not a registered user.

The search section 16 accesses the database of the storage section 13 and searches for identification data of the music data transmitted from the terminal device 20 in the time zone desired by the user.
Then, the search unit 16 extracts the identification data of the predetermined music data from the database, and transmits the identification data to the terminal device 20 from the transmission unit 12.

As shown in FIG. 3, the terminal device 20 which is the device used in the present system 1 and which accesses the server device 10 is, for example, a personal computer capable of listening to a radio broadcast installed in the user's house. , A receiving unit 21 for receiving data transmitted from the server device 10 via the network 3, a transmitting unit 22 for transmitting data to the server device 10 via the network 3, and receiving broadcast data transmitted from the broadcasting station 2. A radio receiver 23,
A storage unit 24 for recording broadcast data and the like, a data processing unit 25 for accessing the storage unit 24, a time supply unit 26 for measuring time, an operation unit 27 for inputting operation signals,
And a display unit 28 for displaying the data processed.

The storage unit 24 is composed of a recording medium such as a hard disk built in the main body of the apparatus, a disk cartridge detachable from the main body of the apparatus, a tape cassette, an IC card, and the like.
User-desired music data used for radio broadcasting is recorded.

When the radio receiving unit 23 receives the broadcast data of the channel designated by the operating unit 27, the data processing unit 25 stores it in the storage unit 24. Further, when the data processing unit 25 acquires a desired playlist from the server device 10, the data processing unit 25 deletes the part except the music data and deletes the overlapping music data except one. Further, as described above, when the broadcast data includes the identification data of the music data used for the program and the identification data of the performer, the data processing unit 25 determines the identification data of the music data used for the program. To extract.

The time supply unit 26 uses the NTP (network time
protocol) Connects to a server or the like to match the built-in clock, and outputs the time indicated by the clock to the data processing unit 25. That is, the data processing unit 25 records the broadcast received by the radio receiving unit 23 in the storage unit 24 at the recording start date and time input by the operation unit 27, and stops the recording operation at the recording end time.

The operation unit 27 is composed of a keyboard for inputting data, a mouse, a ten-key pad, a trackball, a joystick, etc., and generates an operation signal in accordance with a user's operation, which is sent to the data processing unit 25. Output. In addition to being able to input characters, the operation unit 27 allows, for example, selection of a receiving channel, setting of a timer,
It is possible to perform operations such as volume control, recording and reproducing of music data.

The display unit 28 is a CRT (cathode-ray tub).
e) and LCD (liquid crystal display) etc.,
For example, a list of titles and the like of the music data used in the recorded radio broadcast is displayed so that the user can select desired music data using the operation unit 27.

Next, a series of procedures for the user to access the server device 10 from the terminal device 20 and acquire the playlist will be described with reference to FIG. First, in step S1, the terminal device 20 sets a timer in order to record a radio broadcast. That is, the user operates the operation unit 27 to set the radio broadcast channel to be recorded, the recording start date and time, and the recording end date and time, and these data are temporarily stored in the storage unit 24. In step S2, the data processing unit 25
Determines whether or not the recording start date and time has arrived, based on the time input from the time supply unit 26. When the recording start date and time has arrived, the process proceeds to step S3, and when the recording start date and time has not arrived, step S2 repeat. Step S3
In the above, at the recording start date and time, the data processing unit 25 drives the radio receiving unit 23 to record the radio broadcast of the channel selected by the user in the storage unit 24.

In step S4, the data processing unit 25
Judges whether or not the recording end date and time has come. When the recording end date and time has come, the process proceeds to step S5, and when the recording end date and time has not come, step S4 is repeated, that is, the recording operation continues. In step S5, when the recording end date and time arrives, the data processing unit 25 causes the radio receiving unit 23
To stop the radio broadcast recording operation.

In step S6, the user operates the operation unit 2
By operating 7, for example, a predetermined URL (unif
orm resource location), the data processing unit 25 sends the channel data of the recorded broadcast, the recording start date / time data, and the recording end date / time data from the transmission unit 22.
It is transmitted to the server device 10 together with the user identification data.

In step S7, the server device 10 receives the user identification data, the channel data, the recording start date / time data, the recording end date / time data, etc. transmitted from the terminal device 20 by the receiving unit 11. Next, the determination unit 15 of the server device 10 accesses the user registration record forming the database of the recording unit 13 based on the user identification data transmitted from the terminal device 20, and determines whether or not the user is a registered user. to decide. Then, the determination unit 1
If the user is a registered user, the process proceeds to step S8. If the user is not a registered user, 5 notifies that user registration is required for using the system 1, for example.

In step S8, the search unit 16 of the server device 10 accesses the database of the storage unit 13, and based on the channel data, the recording start date / time data, and the recording end date / time data transmitted from the terminal device 20, Do a search. In step S9, the search unit 16 extracts the corresponding data and creates a playlist as shown in FIG.

In this playlist, the broadcast start date and time of the music data used in at least the broadcast of the time zone channel transmitted from the terminal device 20 by the user so that the broadcast time of the broadcast music data can be specified. And end date and time and music data identification data.

Then, in step S10, the searching unit 16 causes the transmitting unit 12 to search the playlist for the terminal device 20.
Send to. In step S11, the terminal device 20
Is received by the receiving unit 21, and then the data processing unit 2
5 stores the play list in the storage unit 24.

As described above, the terminal device 20 is
When the broadcast data includes identification data of music data used for a program and identification data of a performer, a playlist may be created based on the identification data. This will be described with reference to FIG.
In 11, the terminal device 20 sets a timer for recording a radio broadcast. That is, the user operates the operation unit 27 to set the radio broadcast channel to be recorded, the recording start date and time, and the recording end date and time, and these data are temporarily stored in the storage unit 24. In step S12, the data processing unit 25
Based on the time input from the time supply unit 26, it is determined whether or not the recording start date and time is reached. When the recording start date and time is reached, the process proceeds to step S13, and when the recording start date and time is not reached, step S12 is repeated. . Step S1
In 3, the data processing unit 25 drives the radio receiving unit 23 at the recording start date and time and records the radio broadcast of the channel selected by the user in the storage unit 24.

In step S14, the data processing unit 2
5 judges whether or not the recording end date and time has come. When the recording end date and time has come, the operation proceeds to step S15, and when the recording end date and time has not come, step S14 is repeated, that is, the recording operation continues. In step S15,
At the recording end date and time, the data processing unit 25 stops driving the radio reception unit 23 and stops the recording operation of the radio broadcast.

In step S16, the data processing unit 2
5 extracts the identification data of the music data included in the broadcast data. Then, the data processing unit 25 uses the table 2 above.
Create a playlist as shown in, and store it in the storage unit 24.
Save to.

Then, the terminal device 20 that has acquired the playlist creates a first management table that associates the music data included in the broadcast data recorded by itself with the playlist. This will be described with reference to FIG. For example, FIG. 7 is created based on the play list shown in FIG. The data processing unit 25 refers to the recording start date and time and the ending date and time for each piece of music data in the playlist shown in FIG. 5 to identify the area in which the music data of the recorded broadcast data stored in the storage unit 24 is recorded. To do. That is, the data processing unit 25 specifies the time zone between the recording start date and time and the end date and time for each song data of the playlist as the region in which the song data is recorded, and refers to the playlist in each region. ,
Identification data of music data is added. In addition, the data processing unit 25 identifies an area in which music data is not recorded as an area in which conversation data, commercial data, etc. are recorded.

For example, the data processing unit 25 is 18:00.
The time zone from ~ 18: 03 is specified as the time zone in which the music data is broadcast, and the music data recorded here is specified as "ABC". In addition, the data processing unit 25
Specifies the time zone from 18:04 to 18:06 as the time zone in which the music data is broadcast, and specifies that the music data recorded here is "XYZ".

Next, a procedure for the terminal device 20 to extract music data from the broadcast data stored in the storage section 24 will be described with reference to FIG. In step S21, the data processing unit 25 erases the area in which the music data shown in FIG. 7 is not recorded, that is, the TOC (table of content).
s) has no data. As a result, only the music data in the recorded broadcast data can be read out. Then, the data processing unit 25 creates a second management table as shown in FIG. 9 so that the music data can be read according to the playlist. In the second management table, link information is recorded for each piece of music data included in the recorded broadcast data. Since the playlist and the recorded broadcast data are separately stored in the storage unit 24, the link information associates the identification data of the music data with the music data, for example, by selecting the identification data. The music data indicated by the identification data can be reproduced.

In step S22, the data processing unit 2
Reference numeral 5 refers to the recording start date and time to search for the first recorded music data, and also for the next music data. That is, in the example of FIG. 9, the data processing unit 25 searches and extracts the first piece of music data “ABC” and the second piece of music data “XYZ”. In step S23, the data processing unit 25 determines whether the first music data is the same as the next music data. Then, when the data processing unit 25 is the same, step S
24, and if they are not the same, proceed to step S25.

In step S24, the data processing unit 2
When the music data is duplicated, the number 5 is incremented by 1 for the duplication number, and the duplicated music data is erased, that is, the TOC is brought into a state of no data and is made unreadable. Specifically, the data processing unit 25 rewrites the link information of the corresponding music data in the second management table without link. As shown in FIG. 10, the data processing unit 25 determines that the music piece data “ABC” is 18:00 to 18: 0.
3 and 19:00 to 19:03 are broadcast twice, the music data "AB" from 19:00 to 19:03
The link information of "C" is set to no link. Then, the data processing unit 25 increments the duplication number of the music data “ABC” by 1.

In step S25, the data processing unit 2
Reference numeral 5 refers to the identification data of the music data, the recording start date and time, and the like to determine whether there is the next music data. Then, the data processing unit 25, when there is the next music data,
The process proceeds to step S26, and if there is no next music data, the process ends.

In step S26, the data processing unit 2
When No. 5 proceeds to the next music data, the process returns to step S23 to determine again whether or not the next music data is duplicated. That is, the data processing unit 25 prevents a plurality of the same music data from existing in the storage unit 24, and enables the recording area of the storage unit 24 to be effectively used.

By the way, in the step S24,
Although the number of overlapping music data is counted, this serves as an index indicating the degree of popularity of music data in addition to the effective use of the recording area of the storage unit 24. This is because the music data that is repeatedly broadcast is often popular music data. Therefore, the data processing unit 2
In order to make it easy to select the music data to be stored in the storage unit 24, the display unit 5 displays information about the music data on the display unit 28 in the order of the number of duplicates. This is shown in FIG.
Will be described with reference to. In step S31, the data processing unit 25 extracts the duplication number of each piece of music data and sorts the duplication number in descending order of duplication number, and in step S23, displays this on the display unit 28. Here, the screen displayed on the display unit 28 will be described with reference to FIG. 12. On this screen 31, information regarding the music data is displayed in a list in order from the first rank in order of the number of duplicates. Specifically, the screen 31 is provided with a list display unit 32 that displays a list of information about music data, and the list display unit 32 includes, for each music data, identification data of the music data, a broadcast start date and time, and a broadcast end. The date and time and the name of the performer are displayed in order from the first place. Further, an enter button 33 for confirming the music data selected by the user is provided.

In step S33, the data processing unit 2
5 determines whether or not one or a plurality of pieces of music data are selected according to the user's operation. Specifically, the user operates the operation unit 27 while referring to the screen displayed on the display unit 28.
When one or more are selected from the list displayed by operating the, the data processing unit 25 causes the data processing unit 25 to perform step S3.
In 4, the selected column is highlighted.

In step S35, the data processing unit 2
When the user operates the operation unit 27 to click the enter button in the screen, the data No. 5 erases data other than the selected music data in step S36, that is, makes it inaccessible. That is, the data processing unit 25 deletes the music data not selected by the user, that is, the music data determined to be unnecessary, thereby leaving only the music data desired by the user in the storage unit 24,
The recording area of the storage unit 24 can be effectively used.

According to the system 1 as described above, the broadcast of the predetermined channel is recorded for a predetermined time by using, for example, the timer function, and then the server device 10 is accessed to play the music data in the recorded time zone. A list is acquired, and only the desired music data is stored in the storage unit 2 using this playlist.
4 can be stored. When the desired music data is selected, the display unit 28 displays the music data in the order of the music data broadcast a plurality of times.
The music data to be stored in 4 can be selected. Further, in this system 1, since unnecessary data, that is, commercial data, conversation data, and unselected music data in recorded broadcast data are erased, the recording area of the finite storage unit 24 is saved. It can be used effectively.

By the way, the server device 10 and the terminal device 20
The above-described series of processing performed by the above can be performed not only by hardware but also by software. When the series of processes is performed by software, a program forming the software is installed in a general-purpose personal computer, a one-chip microcomputer, or the like. FIG. 13 shows a configuration example of a computer in which a program that executes the series of processes described above is installed.

The program is stored in a hard disk 41 or a ROM (Rea) as a recording medium built in the computer.
It can be recorded in the d Only Memory) 42 in advance.
In addition, the program is a flexible magnetic disk, CD
-ROM (Compact Disc ReadOnly Memory), MO (Magneto
to optical) disc, DVD (Digital Versatile Dis)
c), it can be temporarily or permanently stored (recorded) in the removable recording medium 43 such as a magnetic disk or a semiconductor memory. Such a removable recording medium 43
Can be provided as so-called packaged software.

The program is installed in the computer from the removable recording medium 43 as described above, and is also wirelessly transferred from the download site to the computer via an artificial satellite for digital satellite broadcasting or LAN (Local Area). Network), via a network such as the Internet, and transferred to a computer by wire. In the computer, the program thus transferred can be received by the communication unit 44 and installed in the built-in hard disk 41.

The computer is a CPU (Central Process).
ing Unit) 45 is built in. An input / output interface 47 is connected to the CPU 45 via a bus 46. The CPU 45 allows the user to operate an input unit 48 including a keyboard, a mouse, etc. via the input / output interface 47. When a command is input by, the program stored in the ROM 42 is executed accordingly.

Alternatively, the CPU 45 uses the hard disk 41
The program stored in the hard disk 41, the program transferred from the satellite or the network, received by the communication unit 44 and installed in the hard disk 41, or read from the removable recording medium 43 mounted in the drive 49 and installed in the hard disk 41. The loaded program is loaded into a RAM (Random Access Memory) 50 and executed.

As a result, the CPU 45 performs the process according to the above-mentioned flowchart or the process performed by the configuration of the above-mentioned block diagram. And the CPU 45
The processing result is output from the output unit 51 including a monitor, a speaker, or the like via the input / output interface 47, or is transmitted from the communication unit 44, and is recorded in the hard disk 41, if necessary. Let

Here, the processing steps in which a program for causing a computer to perform various kinds of processing is not necessarily processed in time series in the order described as a flowchart, but are executed in parallel or individually. Processing (for example, parallel processing or processing by an object) is also included.

The program may be processed by one computer or may be processed in a distributed manner by a plurality of computers. Further, the program may be transferred to a remote computer and executed.

[0061]

According to the present invention, broadcast data is received,
By storing the received broadcast data, extracting the content data included in the broadcast data from the stored broadcast data, and deleting the broadcast data excluding the extracted content data, the desired content from the broadcast data can be obtained. Only the data can be extracted and the recording area of the storage means can be effectively used.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a configuration of a system to which the present invention is applied.

FIG. 2 is a diagram illustrating a configuration of a server device that constitutes the system.

FIG. 3 is a diagram illustrating a configuration of a terminal device that constitutes the system.

FIG. 4 is a flowchart illustrating a procedure in which a terminal device accesses a server device and acquires a playlist.

FIG. 5 is a diagram illustrating a playlist.

FIG. 6 is a flowchart illustrating an operation of a terminal device that can create a playlist by extracting identification data from broadcast data.

FIG. 7 is a diagram illustrating a first management table created by referring to a playlist.

FIG. 8 is a flowchart illustrating a procedure for extracting music data from broadcast data recorded by a terminal device.

FIG. 9 is a diagram illustrating a second management table that enables music piece data to be read according to a playlist.

FIG. 10 is a diagram illustrating a second management table in which duplicate music data is deleted.

FIG. 11 is a flowchart illustrating a procedure of displaying information about music data in the order of the number of duplicates on the display unit.

FIG. 12 is a diagram illustrating a screen displayed on the display unit of the terminal device.

FIG. 13 is a block diagram illustrating a configuration of a computer.

[Explanation of symbols]

1 data processing system, 2 broadcasting stations, 3 networks, 10 server devices, 20 terminal devices

Claims (40)

[Claims] 1. Receiving means for receiving broadcast data, storage means for storing broadcast data received by the receiving means, and content data included in the broadcast data from the broadcast data stored in the storage means. A data processing apparatus comprising: an extracting unit that deletes the broadcast data excluding the content data extracted by the extracting unit. 2. The apparatus further comprises transmitting means for transmitting the recording start time, recording end time and channel of the broadcast data to be recorded to another device, wherein the receiving means is transmitted from the other device from the transmitting means. The data processing apparatus according to claim 1, wherein a playlist corresponding to a recording start time, a recording end time, and a channel is received, and the extraction unit extracts content data according to the playlist received by the reception unit. 3. The data processing apparatus according to claim 2, wherein the erasing means erases the remaining content data except one when the identification data of the content data of the playlist are duplicated. 4. A display means for displaying identification data of content data included in broadcast data, and a counting means for counting the number of duplicates of the content data, the display means comprising: 4. The data processing device according to claim 3, wherein the identification data of the content data sorted according to the duplication number counted by the counting means is displayed. 5. A selection means for selecting one or a plurality of identification data from a plurality of identification data displayed on the display means, and the erasing means selects the identification data selected by the selection means. The data processing apparatus according to claim 4, wherein the content data other than the content data is erased. 6. The data processing apparatus according to claim 1, wherein the broadcast data includes identification data for identifying content data, and the extraction means generates a playlist based on the identification data. 7. The data processing device according to claim 6, wherein said erasing means erases the remaining content data except one when the identification data of the content data of said playlist are duplicated. 8. The display device further comprises display means for displaying identification data of the content data included in the broadcast data, and counting means for counting the number of duplications of the content data. The data processing device according to claim 7, wherein identification data of the content data sorted according to the duplication number counted by the means is displayed. 9. A selection means for selecting one or a plurality of identification data from a plurality of identification data displayed on the display means, and the erasing means selects the identification data selected by the selection means. The data processing device according to claim 8, wherein the content data to be removed is erased. 10. The data processing apparatus according to claim 1, wherein the erasing means disables access to the content data stored in the storing means as an erasing operation. 11. Receiving broadcast data, storing the received broadcast data, extracting content data included in the broadcast data from the stored broadcast data, and extracting broadcast data excluding the extracted content data. Data processing method to erase. 12. A recording start time of broadcast data to be recorded,
The recording end time and the channel are transmitted to another device, and the playlist corresponding to the recording start time, the recording end time and the channel transmitted from the transmitting means is received from the other device, and the playlist is received according to the received playlist. The data processing method according to claim 11, wherein the content data is extracted by means of: 13. The data processing method according to claim 12, wherein when the identification data of the content data of the play list is duplicated, the remaining content data except one is deleted. 14. The data processing method according to claim 13, wherein the number of duplicates of the content data is counted, and the identification data of the content data sorted according to the duplication number is displayed. 15. The data processing method according to claim 14, wherein one or a plurality of identification data are selected from the plurality of displayed identification data, and the content data excluding the selected identification data is erased. 16. The data processing method according to claim 11, wherein the broadcast data includes identification data for identifying content data, and a playlist is generated based on the identification data. 17. The data processing method according to claim 16, wherein when the identification data of the content data of the play list is duplicated, the remaining content data except one is deleted. 18. The data processing method according to claim 17, wherein the number of duplicates of the content data is counted, and the identification data of the content data sorted according to the duplication number is displayed. 19. The data processing method according to claim 17, wherein one or a plurality of identification data is selected from the displayed plurality of identification data, and the content data excluding the selected identification data is erased. 20. The data processing method according to claim 11, wherein, as the erasing operation, access to the content data stored in the storage means is disabled. 21. A recording medium in which a computer program processable by a computer is recorded, the computer program receiving broadcast data,
A recording medium comprising: storing the received broadcast data, extracting content data included in the broadcast data from the stored broadcast data, and erasing the broadcast data excluding the extracted content data. 22. The computer program transmits a recording start time, a recording end time and a channel of broadcast data to be recorded to another device, and the other device transmits the recording start time and the recording end by the transmitting means. 22. The recording medium according to claim 21, further comprising the step of receiving a playlist corresponding to a time and a channel and extracting content data according to the received playlist. 23. The recording medium according to claim 22, wherein the computer program includes a step of erasing the remaining content data except one when the identification data of the content data of the playlist are duplicated. 24. The recording medium according to claim 23, wherein the computer program includes a step of counting the number of duplications of the content data and displaying identification data of the content data sorted according to the duplication number. . 25. The computer program includes a step of selecting one or a plurality of identification data from the displayed plurality of identification data and deleting content data excluding the selected identification data. Recording medium. 26. The recording medium according to claim 21, wherein the broadcast data includes identification data for identifying content data, and the computer program includes a step of generating a playlist based on the identification data. . 27. The recording medium according to claim 26, wherein the computer program includes a step of erasing the remaining content data except one when the identification data of the content data of the playlist are duplicated. 28. The recording medium according to claim 27, wherein the computer program includes a step of counting the number of duplicates of the content data and displaying identification data of the content data sorted according to the duplication number. . 29. The computer program includes a step of selecting one or a plurality of identification data from the displayed plurality of identification data and deleting the content data excluding the selected identification data. Recording medium. 30. The recording medium according to claim 21, wherein the computer program, as the erasing operation, disables access to the content data stored in the storage means. 31. A computer program executable by a computer, which receives broadcast data, saves the received broadcast data, extracts content data included in the broadcast data from the saved broadcast data, A computer program including a step of deleting broadcast data excluding the extracted content data. 32. A recording start time of broadcast data to be recorded,
The recording end time and the channel are transmitted to another device, the playlist corresponding to the recording start time, the recording end time and the channel transmitted from the transmitting means is received from the other device, and the playlist is received according to the received playlist. 32. The computer program according to claim 31, further comprising the step of extracting content data according to the method. 33. The computer program according to claim 32, further comprising the step of erasing the remaining content data except one when the identification data of the content data of the playlist are duplicated. 34. The computer program according to claim 33, further comprising the step of counting the number of duplicates of the content data and displaying the identification data of the content data sorted according to the duplication number. 35. The computer program according to claim 34, further comprising the step of selecting one or more identification data from the plurality of displayed identification data and erasing the content data excluding the selected identification data. 36. The computer program according to claim 31, wherein the broadcast data includes identification data for identifying content data, and including a step of generating a playlist based on the identification data. 37. The computer program according to claim 36, further comprising the step of erasing the remaining content data except one when the identification data of the content data of the playlist are duplicated. 38. The computer program according to claim 37, further comprising the step of counting the number of duplications of the content data and displaying the identification data of the content data sorted according to the duplication number. 39. The computer program according to claim 38, further comprising the step of selecting one or a plurality of identification data from the displayed plurality of identification data and erasing the content data excluding the selected identification data. 40. The computer program according to claim 31, wherein, as the erasing operation, access to the content data stored in the storage means is disabled.