JP4867062B2 - Content extraction apparatus and program thereof - Google Patents

Description

The present invention relates to a content extraction apparatus that automatically acquires desired content from a large number of content broadcast from a broadcasting station.

  In general, air check is to record content such as music and video broadcast on radio and television on a storage medium, and then play back the recorded content for later enjoyment. Widely used between.

  However, the viewer does not know when the desired content will be broadcast. For example, in FM radio broadcasting, it may be known in advance that a desired song is broadcast in a program, but since CM and DJ are included in the program, when the desired song is broadcast in the program I do not know until.

  In view of this, the present applicant has proposed an air check system for extracting a desired song using a cue sheet in Japanese Patent Application Laid-Open No. 2007-59035. In the air check system described in this document, an air check device installed at a user's home or the like acquires a cue sheet describing a broadcast start time, a title, and the like of a broadcasted song from a server. The air check device also always receives FM broadcasts and stores all received broadcast data. Then, referring to the cue sheet, a desired song is extracted from all the recorded broadcast data and reproduced.

  As shown in FIG. 14, for example, one program 1 includes songs A to F. Here, the broadcast start time of the song is described in the cue sheet, but the broadcast end time is not described. That is, the broadcast end time of the song is the broadcast start time of the next song. Therefore, as shown in FIG. 14, the actual broadcast time of the song B is 8: 12: 0 to 8:17:00, but the playback range of the song B specified from the cue sheet is 8:12:00. ~ 8: 20: 00.

  In the air check system, for example, when the song B is designated as a song to be played by a user operation, the broadcast data of the program 1 including the songs after the song B (songs B to F) is continuously played. Function is required. In this case, when the music B is first reproduced, the reproduction range of the music B is specified as 8: 12: 0 to 8:20:00, and the data in the reproduction range is read from the storage medium and reproduced. Once the reproduction of the music B is finished, next, the program 1 specifies 8: 20: 0 to 8:35:00 as the reproduction range of the music C that is the next music after the music B, and the reproduction from the storage medium. Read and play the song data in the range. In this way, after the previous song has been played, in order to specify the playback range of the next song and start playing, between song B and song C (that is, at a playback position of 8:20:00) There is a problem that the sound is cut off.

  As shown in FIG. 14, for example, the reproduction range based on the cue sheet of the song D is 8:35:00 to 8:40:00, but the actual broadcast time is 8:34:30 to 8:39: It is 30. This is because the broadcast start time described in the cue sheet is described only in minutes. Therefore, when the music data of the program 1 after the music B is continuously reproduced as described above, the head portion of the music D is lost, and the above problem becomes particularly remarkable.

JP 2007-59035 A

The present invention has been made in order to solve the above-described conventional problems, and an object of the present invention is to provide a content extraction device that does not cause interruption when content in a program subsequent to specified content is continuously reproduced. is there.

  A content extraction apparatus according to a preferred embodiment of the present invention includes a recording unit that records broadcast data including a plurality of contents broadcast from a broadcast station on a storage medium, specific information of each content broadcast from the broadcast station, and a broadcast start time A storage means for storing a cue sheet in which the information is associated with, a program table in which specific information of a program broadcast from the broadcasting station and including a plurality of the contents and information on a broadcast time zone are associated, a cue sheet and the program table The program specifying means for specifying the program including the broadcast start time on the cue sheet of the designated content from the program table, and the program specifying means from the broadcast start time on the cue sheet of the designated content Extraction means for extracting broadcast data up to the broadcast end time in the program guide of the program specified by.

  The broadcast end time in the program guide of the program including the specified content from the broadcast start time on the cue sheet of the specified content when continuously playing the content after the specified content in the program including the specified content The broadcast data up to is extracted and reproduced. Therefore, it is possible to prevent a problem that sound is interrupted between a plurality of contents included in a program.

  Preferably, a list generation unit that extracts a content after the desired content included in the program specified by the program specifying unit from a cue sheet and generates a content list, and broadcast data that the reproduction unit reproduces A broadcast time specified by the broadcast time specifying means from among a plurality of contents included in the content list, based on a broadcast start time specifying means for specifying the broadcast time and a broadcast start time on a cue sheet of each content Content specifying means for specifying the content corresponding to, and display control means for causing the display device to display the specific information of the content specified by the content specifying means as the currently reproduced content.

  Even if broadcast data from the broadcast start time on the cue sheet of the specified content to the broadcast end time in the program guide of the program including the specified content is extracted and played back, the broadcast data currently being played back By using the broadcast time and the information on the cue sheet, it is possible to specify the content currently being reproduced. Therefore, it is possible to display the specific information of the content currently being reproduced on the display device.

  In the case where the content after the designated content is continuously reproduced in the program including the designated content, it is possible to prevent a problem that sound is interrupted between a plurality of contents.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

[overall structure]
Referring to FIG. 1, an air check system 10 according to an embodiment of the present invention is for automatically acquiring a desired song from a radio frequency modulation (FM) broadcast, and is a queue connected to the Internet 11. A sheet server 12, a personal computer (PC) 13 connected to the Internet 11, and an FM tuner 14 connected to the PC 13 are provided. A plurality of broadcast station servers 16 are also connected to the Internet 11. The cue sheet server 12 is managed by a provider who provides this service, and the broadcast station server 16 is managed by a broadcast station which mainly broadcasts music programs and the like. The PC 13 and the FM tuner 14 are the property of the user who is the viewer.

  The cue sheet server 12 acquires a cue sheet from each broadcast station server 16 and provides it to the PC 13 of each user. The PC 13 functions as a client that can access the cue sheet server 12. The PC 13 and the FM tuner 14 constitute an air check device 80.

  The PC 13 is a general-purpose device and includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk drive (HDD), a display, an input device such as a keyboard and a mouse, and the like. An air check program described later is installed in the PC 13. The FM tuner 14 receives FM broadcasts from each broadcasting station and supplies the received broadcast data to the PC 13.

[Queue sheet server]
With reference to FIG. 2, the cue sheet server 12 includes an acquisition unit 20, a format conversion unit 21, a service information addition unit 22, and a web server 23. The acquisition unit 20 accesses each broadcast station server 16 and acquires the cue sheet 24 uploaded thereto.

  In the cue sheet 24 provided by each broadcasting station, the broadcast start time begin [n] of the broadcasted song Mn and metadata such as titles and artist names are described in HTML (Hyper Text Markup Language). . However, the format, such as the type of information described, the type of tag used, the order of description, etc., varies from broadcast station to broadcast station. The cue sheet 24 does not describe the broadcast end time of the broadcasted song Mn.

  The format conversion unit 21 converts the format of the acquired cue sheet 24 into a predetermined common format. The format conversion unit 21 has a plurality of conversion filters 25 corresponding to a plurality of types of formats. Each conversion filter 25 converts a corresponding format into a common format.

  The cue sheet 26 thus obtained has a common format. Specifically, as shown in FIG. 3, the cue sheet 26 includes a field 261 describing a station ID (identifier) assigned to each broadcasting station, and a plurality of songs corresponding to a plurality of songs broadcast from the broadcasting station. And a record 262.

  Each record 262 describes the broadcast start time begin [n], broadcast end time end [n], and metadata of the corresponding song Mn. The broadcast end time end [n] is obtained based on the broadcast start time, and is specifically the same as the broadcast start time begin [n + 1] of the song Mn + 1 broadcast after the song Mn. FIG. 4 shows an example of the cue sheet 26.

  Referring to FIG. 2 again, the service information adding unit 22 adds various predetermined service information to each cue sheet 26 converted into the common format. Various service information includes a URL (Uniform Resource Locator) of a website that sells CDs, DVDs, concert tickets, and the like that record broadcast songs, URLs of websites that sell digital data of the songs, banner advertisements, etc. is there. Therefore, the cue sheet server 12 can be a portal site for guiding users to various websites 27.

  The acquiring unit 20 further acquires a program guide 69 provided from each broadcasting station. The program table 69 includes the broadcast start time and broadcast end time of the broadcasted program, information about the program name, DJ and performers, and metadata such as the program homepage URL. Within each program, the above-mentioned plurality of songs are broadcast. That is, the program includes a plurality of songs.

  The format of the program guide 69 provided from each broadcast station differs from broadcast station to broadcast station, as is the case with cue sheets. Therefore, the format conversion unit 21 converts the acquired program guide into a predetermined common format. The program guide 70 thus obtained has a common format. An example of the obtained program table 70 is shown in FIG. The program table 70 includes a station ID, broadcast start time and broadcast end time of the broadcasted program, and metadata.

  In the web server 23, a cue sheet database 28 and a program guide database 71 are constructed. The cue sheet 29 to which various service information is added is stored in the cue sheet database 28, and the program guide 70 is stored in the program guide database 71. The web server 23 reads the cue sheet 29 and the program guide 70 in response to a request from the PC 13 and transmits them to the PC 13.

  Next, the operation of the cue sheet server 12 will be described with reference to FIG.

  The acquisition unit 20 requests each broadcast station server 16 to transmit the cue sheet 24 and the program guide 69 (S101). Each broadcasting station server 16 receives this request (S201), and transmits the cue sheet 24 and the program guide 69 to the cue sheet server 12 (S202). The acquisition unit 20 receives the cue sheet 24 and the program guide 69 (S102) and supplies them to the format conversion unit 21.

  The format conversion unit 21 converts the format of the cue sheet 24 into a common format, and creates the cue sheet 26 shown in FIGS. 3 and 4 (S103). At this time, the broadcast start time begin [n + 1] of the song Mn + 1 is described in the cue sheet 26 as the broadcast end time end [n] of the song Mn. The created cue sheet 26 is supplied to the service information adding unit 22.

  The service information adding unit 22 adds service information to the cue sheet 26 (S104), and stores the cue sheet 29 obtained thereby in the cue sheet database 28 (S105).

  The format conversion unit 21 further converts the format of the program guide 69 into a common format and creates the program guide 70 shown in FIG. 5 (S103). The created program guide 70 is stored in the program guide database 71 (S105).

[FM tuner and PC (air check device)]
Referring to FIG. 7, air check device 80 includes a PC 13 and an FM tuner 14. The FM tuner 14 receives an FM broadcast. The PC 13 includes an ADC (Analog to Digital Converter) 31 that converts an analog signal output from the FM tuner 14 into a digital signal. The ADC 31 indicates, for example, a sound card. However, in the case of a digital tuner that can output a digital signal, the PC 13 may not include the ADC 31. The PC 13 is also installed with a general-purpose MP3 (MPEG Audio Layer-3) encoder 32, a general-purpose web browser 33, and a general-purpose MP3 player 15, and an air check program (38 to 41) described in detail later. The recording status management database 35, the index database 36, the cue sheet database 37, and the program guide database 75 are constructed. The air check program includes an index generation module 38, a web interface 39, an acquisition module 40, and a sweeper module 41. These details will be clarified in the following operation description.

  Next, operations of the FM tuner 14 and the PC 13 will be described.

  The FM tuner 14 and the PC 13 are always operating. Therefore, the FM tuner 14 always receives FM broadcasts, and the PC 13 records all received broadcast data on a storage medium such as a hard disk.

  Referring to FIG. 8, the MP3 encoder 32 in the PC 13 is always operating, and encodes the digital broadcast data output from the FM tuner 14 and A / D converted into MP3 data (S301). In parallel with this, the web interface 39 also operates, and the MP3 data obtained by the MP3 encoder 32 is saved (recorded) in the MP3 database 34 as one MP3 file 42 every predetermined time (6 hours in this example) (S302). ).

  The web interface 39 also generates the recording situation management table 43 shown in FIG. 9 (S311) and stores it in the recording situation management database 35 (S312).

  Referring to FIG. 9, the recording status management table 43 includes a field 431 describing station IDs and a plurality of records 432 corresponding to a plurality of MP3 files 42. Each record 432 describes the recording start time, recording end time, and file name of the corresponding MP3 file 42. FIG. 10 shows an example of the recording status management table 43.

  The file name of the MP3 file 42 is set to a combination of the station ID and the recording start time, for example, “OOSAKA_20050522180000.MP3” (MP3 is an extension indicating the MP3 file 42).

  In principle, FM broadcasts are recorded for 24 hours every day. However, since there is a case where a power failure occurs or a user takes out the PC 13, not all broadcast data is necessarily saved as the MP3 file 42. In FIG. 10, the portions other than the diagonal lines are not recorded.

  On the other hand, the index generation module 38 reads the MP3 file 42 from the MP3 database 34, generates the index file 44 based on the MP3 file 42 (S321), and stores it in the index database 36 (S322).

  Specifically, as shown in FIG. 11, the index generation module 38 divides the MP3 file 42 into a plurality of sections 45 every predetermined time. In this example, since the MP3 file 42 for 6 hours is divided every second, 21600 (= 6 hours × 60 minutes × 60 seconds) sections 45 are obtained. Then, the index generation module 38 writes the start address of each section 45 in the index file 44 in order.

  FIG. 12 shows an example of the index file 44. The index file 44 has a field 441 describing station IDs and a plurality of records 442 corresponding to a plurality of sections 45. Each record 442 describes the start address of the corresponding section 45. In this example, the offset (relative address) from the head address of the MP3 file 42 is written as the start address.

  In FIG. 12, the elapsed time (seconds) from the beginning of the MP3 file 42 is shown, but this notation may be present, but not actually. This is because the elapsed time of each offset (record 442) can be calculated from the number of offsets before that offset.

  Further, the file name of the index file 44 is also set to, for example, “OOSAKA_20050522180000.IDX” (IDX is an extension indicating the index file 44) by combining the same station ID and recording start time as the corresponding MP3 file 42.

  Referring to FIG. 13, the acquisition module 40 in the PC 13 requests the web server 23 of the cue sheet server 12 to transmit a desired cue sheet 29 and program guide 70 (S331). The web server 23 receives this request (S111), reads the desired cue sheet 29 from the cue sheet database 28, and reads the desired program table 70 from the program table database 71. Then, the read cue sheet 29 and program guide 70 are transmitted to the PC 13 (S112).

  The acquisition module 40 receives the cue sheet 29 and the program guide 70 transmitted from the cue sheet server 12 (S332). Then, the cue sheet 29 is stored in the cue sheet database 37, and the program guide 70 is stored in the program guide database 75 (S333).

  If necessary, the web interface 39 in the PC 13 edits the cue sheet 29 according to the user's input operation (S334). As a result, the user can shift the broadcast start time of the desired song before or after the prescribed time, or supplement the artist name if it is missing.

  The web interface 39 converts the cue sheet 29 into HTML so that it can be displayed by the web browser 33 (S335). A hyperlink is embedded in each cue Mn in the cue sheet described in HTML. The hyperlink includes the URL of the MP3 file 42 including the song Mn, the station ID of the song Mn, the broadcast start time begin [n], and the broadcast end time end [n].

  The web browser 33 displays a song list on the display based on the cue sheet described in HTML (S336). The song list includes the title, artist name, broadcast start time, etc. of each song. At this time, reproducible songs are displayed in a selectable manner, but songs that cannot be reproduced because they are not recorded are displayed in a nonselectable manner.

  When the user clicks a desired song with a mouse or the like, the web browser 33 designates the desired song in response to the input operation (S337), and issues a query to the web interface 39 to read the song. In response to this query, the web interface 39 extracts the designated song from the MP3 database 34 (S338: song extraction process).

  Details of the music extraction process will be described. As shown in FIG. 14 (and FIG. 4 and FIG. 5), for example, song A to song F are included in one program 1. The cue sheet describes the broadcast start time of the song but not the broadcast end time. That is, the broadcast end time of the song is the broadcast start time of the next song. Therefore, as shown in FIG. 14, for example, the actual broadcast time of the song B is 8: 12: 0 to 8:17:00, but the playback range of the song B specified from the cue sheet is 8:12: It is 00-8: 20: 00.

  When the song B is designated as a song to be played back by a user operation, the broadcast data of the program 1 after the song B is continuously played back. Conventionally, when the music B is reproduced, 8: 12: 0 to 8:20:00 is specified as the reproduction range of the music B, and the music data in the reproduction range is read from the MP3 database 34 and reproduced. When the reproduction of the song B is completed, next, 8: 20: 0 to 8:35:00 is specified as the reproduction range of the song C, which is the next song of the song B in the program 1, and the reproduction is performed from the MP3 database 34 Read and play the song data in the range. In this way, after the previous song has been played, in order to specify the playback range of the next song and start playback, between song B and song C (that is, at a playback position of 8:20:00) Sound cuts out.

  Therefore, in the present embodiment, when the song B is designated and the broadcast data of the program 1 after the song B is continuously reproduced, the entire song data of the program 1 after the song B is specified as a reproduction range. The broadcast data in the reproduction range is read from the MP3 database 34 and reproduced. As a result, it is possible to prevent interruption of sound between the music B and the music C (that is, the reproduction position of 8:20:00).

  As shown in FIG. 15, the web interface 39 reads the broadcast start time begin [n] and broadcast end time end [n] of the song Mn specified in step S337 with reference to the cue sheet 29, and further specifies The station ID of the cue sheet 29 in which the written music Mn is described is read (S401). For example, when the song B is designated, referring to FIG. 4, the broadcast start time is 8:12:00 (the date is omitted, the same applies hereinafter), the broadcast end time is 8:20:00, and the station ID is OOSAKA. Is read out.

  The web interface 39 corresponds to the time zone including the read broadcast start time begin [n] and the broadcast end time end [n], and displays the program guide corresponding to the read station ID in the program guide database. Specify from 75. Then, the web interface 39 specifies the program Pj including the broadcast start time begin [n] of the designated song Mn (S402). That is, the program Pj including the broadcast start time begin [n] in its own broadcast time zone is specified. For example, as shown in FIG. 5, since the broadcast start time 8:00 12:00 of the song B is included in the broadcast start time 8:00:00 to the broadcast end time 9:00 of program 1, the program 1 Is identified.

  The web interface 39 reads the broadcast end time Pend [j] of the specified program Pj with reference to the program guide (S403). In this example, 9: 00: 00: 00 is read as the broadcast end time Pend [j] of program 1.

  Next, the web interface 39 displays the songs included in the time zone from the broadcast start time begin [n] of the designated song Mn to the broadcast end time Pend [j] of the program Pj read in S403 in FIG. All the cue sheets are extracted and a music list shown in FIG. 16 is generated (S404). This song list is used to display the title and artist name of a currently playing song, which will be described later. In this example, five songs of song B, song C, song D, song E, and song F included from the broadcast start time begin [n] of song B to the broadcast end time Pend [j] of program 1 are extracted. And will be included in the song list.

  Subsequently, the web interface 39 should continuously reproduce the MP3 data corresponding to the time zone from the broadcast start time begin [n] of the song Mn in the cue sheet to the broadcast end time Pend [j] of the program Pj in the program guide. Music data is extracted from the MP3 database (S405). Specifically, the file name of the MP3 file is specified based on the broadcast start time begin [n] and the broadcast end time Pend [j]. Specifically, the web interface 39 refers to the recording status management table shown in FIG. 9 and FIG. 10, and the recorded time zone includes one or a plurality of times including the broadcast start time begin [n] and the broadcast end time Pend [j]. Identify the files. Then, referring to the index file 44 corresponding to the specified file name, the MP3 data in the time zone corresponding to the broadcast end time Pend [j] is extracted from the broadcast start time begin [n] in the MP3 file 42. In this example, as shown in FIG. 17, MP3 data in the time zone from the broadcast start time 8:12:00 to the broadcast end time 9:00 of program 1 is extracted.

  The web interface 39 outputs the data extracted in step S405 to the web browser 33. Returning to FIG. 13, the web browser 33 activates the MP3 player 15, and the MP3 player 15 plays the music designated based on the MP3 data (S 339).

  As described above, when the music Pn belongs to the program Pj to which the music Mn after the music Mn belongs when the music Mn is designated, the broadcast start time begin [n] of the music Mn is extracted as the time zone of the extracted music data. ] To the broadcast end time Pend [j] of the program Pj is specified. Therefore, when a plurality of songs in the program Pj after the song Mn are continuously reproduced, no sound break occurs between the songs.

  Further, as shown in FIG. 17, the actual reproduction start time of the music piece D is slightly earlier than the reproduction start time 8:35:00 based on the cue sheet. When the music in the program 1 after the music B is continuously reproduced, after the reproduction of the music C is completed, the MP3 data of 8: 35: 00: 00 to 8:40:00 as the reproduction range of the music D based on the cue sheet Is extracted, the head portion of the song D is lost. However, in this example, MP3 data from the reproduction start time of the song B to the broadcast end time of the program 1 is extracted and continuously reproduced, and thus such a leading portion is not lost.

  In the music F, the reproduction end time based on the cue sheet exceeds the broadcast end time of the program 1. This is because, as described above, the broadcast end time of the song is not described in the cue sheet, and the broadcast end time is the broadcast start time of the next song. Accordingly, broadcast data other than the song F is included by the broadcast end time of the program 1 from 9:00:00 to the broadcast end time of the song F: 9:02:00. If the MP3 data from the broadcast start time to the broadcast end time of the song F is extracted based on the above, broadcast data other than the song F is clearly reproduced. However, in this example, MP3 data from the broadcast start time of the song B to the broadcast end time of the program 1 is extracted, so the broadcast end time of the program 1 9:00:00 to the broadcast end time 9:02 of the song F It is possible to prevent useless data up to 0:00 from being reproduced.

  As described above, when the music in the program Pj after the music Mn is continuously reproduced, metadata such as the title and artist name of the music currently being reproduced is displayed on the PC display. At this time, since the MP3 data extracted in S405 is continuous from the broadcast start time of the song Mn to the broadcast end time of the program Pj, a mechanism for identifying the currently playing song is required. FIG. 18 is a flowchart showing the display processing.

  FIG. 19 is a diagram showing a screen displayed on the display. The song list of FIG. 16 is displayed on the left side, and the broadcast time based on the title, artist name, and cue sheet is displayed for each song B to F. . Also, a cursor (painted in gray in the figure) is displayed for the currently played song. At first, since the music B is reproduced, the cursor is displayed on the music B. On the right side of the screen, the title of the program to be continuously played and the broadcast time are displayed.

  As shown in FIG. 18, the web interface 39 sets the index m indicating the order from the song Mn when the designated song Mn is set to 0 in the song list of FIG. (Specify the song Mn) (S501). Next, the web interface 39 determines whether or not the music is being played back (S502), and if not being played back (NO in S502), the process is terminated. Here, since playback is in progress (YES in S502), the web interface 39 refers to the index file 44 and the recording status management database in the MP3 data from the broadcast start time of the song Mn to the broadcast end time of the program Pj. Then, the broadcast time (reproduction position, offset) of the currently reproduced data is specified (S503).

  The web interface 39 determines whether or not the specified broadcast time exceeds the broadcast time on the cue sheet of the song Mn + m that is currently being reproduced (S504). Specifically, it is determined whether or not the acquired broadcast time is outside the range of the broadcast start time to the broadcast end time of the song that is currently being reproduced in the song list of FIG. If the specified broadcast time does not exceed the broadcast time in the cue sheet of the song Mn + m that is currently being played back (NO in S504), the song Mn + m is still being played back, so it waits for a predetermined time ( After S508), the process returns to S502. Therefore, the display is not changed.

  On the other hand, when the specified broadcast time exceeds the broadcast time in the cue sheet of the song Mn + m that is currently being played (YES in S504), the web interface 39 indicates that the index m is the song list of FIG. It is determined whether or not the number is less than the number X of songs (S505). That is, it is determined whether or not all the songs in the song list have been reproduced. If the index m is equal to or greater than the number X of songs in the song list of FIG. 16 (NO in S505), since all the songs (songs B to F) in the song list have been reproduced, the process ends.

  On the other hand, if the index m is smaller than the number X of songs in the song list of FIG. 16 (YES in S505), the index m is incremented (S506). Then, the web interface 39 specifies the next song Mn + m in the song list of FIG. 16, and moves the cursor displayed on the currently played song to the specified song Mn + m (S507). That is, the display is updated to the next song in the song list. Then, after waiting for a predetermined time (S508), the process returns to S502.

  For example, when song B is displayed as a song being played as shown in FIG. 19, if the broadcast time of the data currently being played is specified as 8:18:00 (S503), the broadcast time 8: It is determined that 18:00 is within the range of the broadcast time of song B from 8: 12: 0 to 8:20:00 (NO in S504). In this case, the display of FIG. 19 is not changed.

  On the other hand, when the song B is displayed as the song being reproduced as shown in FIG. 19, if the broadcast time of the currently reproduced data is specified as 8:20:01 (S503), the broadcast time 8: It is determined that 20:01 exceeds the broadcast time of song B from 8: 12: 0 to 8:20:00 (YES in S504). Since m = 0 (YES in S505), m is incremented to 1, and the song Mn + 1, that is, song C is displayed as shown in FIG.

  As described above, although the MP3 data extracted in S405 is from the broadcast start time of the song Mn to the broadcast end time of the program Pj, the currently playing song can be identified and displayed.

  In the above embodiment, the software MP3 player 15 is installed in the PC 13, but instead of or together with this, a hardware MP3 player device (for example, home audio, portable player, etc.) may be used. Good. In this case, the MP3 file may be transmitted from the PC 13 to the MP3 player device via wired or wireless communication, but may be copied via a memory card such as a flash memory or an optical disk such as a CD or DVD. . Needless to say, an audio compression method other than MP3, for example, AAC (Advanced Audio Cording) may be used. However, the present invention can be applied not only to music content but also to other contents such as video, and whether or not the data is compressed is not limited. That is, the form of broadcast data including content is not limited to FM radio, but may be satellite broadcast such as AM radio, Internet radio, TV (analog / digital), CS / BS (analog / digital).

  In the above embodiment, the PC 13 and the FM tuner 14 always operate and receive and record all broadcasts. However, in order to avoid wasting a limited storage area, a weekly schedule is set. It is possible to stop the operation at night when there is no broadcast, or detect the audio or video signal that has been broadcast and operate only when there is a broadcast, and stop the operation when there is no broadcast Good.

  In the above embodiment, the PC 13 simply displays the cue sheet. However, only a desired artist's music is extracted from a plurality of cue sheets acquired within a predetermined period of time, or a folder is displayed for each artist. It is also possible to create an MP3 file and store it separately.

  In the above-described embodiment, the web browser 33 and the MP3 player 15 are provided in the local PC 13, but instead, in another PC on the network, a dedicated device, a mobile phone, or a PDA (Personal Digital Assistance) May be provided. In this case, if the web interface 39 can be accessed from within a home via a LAN (Local Area Network) or from outside the home via the Internet, the music list can be displayed, the music can be designated and played back.

  In the above embodiment, the FM tuner 14 and the PC 13 constitute an air check device. However, there is an integrated dedicated machine that receives FM broadcasts and records them on a hard disk, or a mobile phone that has a memory instead of a hard disk. An air check device may be configured. In the above embodiment, the cue sheet server 12 acquires the cue sheet and the program table provided from the broadcasting station, but the operator of the cue sheet server directly inputs the cue sheet and the program table to the cue sheet server 12. May be stored in the cue sheet server 12.

  In the above embodiment, the PC 13 obtains the cue sheet and the program guide provided from each broadcasting station via the cue sheet server 12, but may obtain them directly from each broadcasting station. Specifically, the acquisition module 40 shown in FIG. 7 directly accesses each broadcasting station server 16 instead of the cue sheet server 12.

  In the above embodiment, the broadcast data is transmitted by wireless broadcasting, but may be transmitted by cable broadcasting or may be transmitted via an electric communication line such as the Internet.

In addition, as described above, an integrated air check device having the functions of both the FM tuner 14 and the PC 13 shown in FIG. 7 may be used. However, an acquisition module is provided for an air check device that does not have a network interface. It cannot be provided. Therefore, in such a case, an acquisition module may be provided in a PC having a network interface, and the PC may be connected to the input / output interface of the air check device. As an input / output interface, USB (Universal Serial
In addition to Bus) and IrDA (Infrared Data Association), a memory card may be used.

  In addition, the web browser and MP3 player are provided in the PC 13 or the air check device, but other PCs, dedicated machines, mobile phones connected via a network such as a LAN (Local Area Network) or a WAN (Wide Area Network). It may be provided in a telephone or PDA.

  In addition, although MP3 data acquired from the outside is stored in the MP3 database 34, MP3 data acquired by other methods may be stored together here.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment.

  The present invention can be suitably employed in an air check device.

It is a functional block diagram which shows the whole structure of the computer network containing the air check system by embodiment of this invention. It is a functional block diagram which shows the structure of the cue sheet | seat server in FIG. It is a figure which shows the data structure of the cue sheet | seat used with the air check system shown in FIG. It is a figure which shows an example of the cue sheet | seat shown in FIG. It is a figure which shows an example of the program schedule used with the air check system shown in FIG. It is a flowchart which shows operation | movement of the cue sheet | seat server shown in FIG. It is a functional block diagram which shows the structure of PC and FM tuner in FIG. It is a flowchart which shows operation | movement of PC shown in FIG. It is a figure which shows the data structure of the recording condition management table produced | generated with PC shown in FIG. It is a figure which shows an example of the recording condition management table shown in FIG. It is explanatory drawing which shows the production | generation method and index extraction method of the index file by PC shown in FIG. It is a figure which shows the data structure of the index file produced | generated by PC shown in FIG. FIG. 8 is a flowchart showing operations of the cue sheet server and the PC shown in FIGS. 2 and 7. It is a figure which shows the relationship between the reproduction range on a cue sheet | seat, the broadcast time of an actual music, and a program. It is a flowchart which shows a music extraction process. It is a figure which shows a music list. It is a figure which shows the relationship between the reproduction range on a cue sheet | seat, the broadcast time of an actual music, and a program. It is a flowchart which shows a display process. It is a figure which shows the display screen which shows the music in reproduction | regeneration. It is a figure which shows the display screen which shows the music in reproduction | regeneration.

Explanation of symbols

10 Air Check System 12 Cue Seat Server 13 PC
14 FM tuner 16 Broadcast station server 20 Acquisition unit 24, 26, 29 Cue sheet 28, 37 Cue sheet database 40 Acquisition module 58, 80 Air check device 69, 70 Program guide 71, 75 Program guide database

Claims (4)

Recording means for recording broadcast data including a plurality of contents broadcast from a broadcasting station on a storage medium;
Corresponds to the content broadcast time information that associates the specific information and broadcast start time of each content broadcast from the broadcast station, the specific information of the program that is broadcast from the broadcast station and includes a plurality of the content, and information about the broadcast time zone Receiving means for receiving the attached program guide;
Program specifying means for referring to the content broadcast time information and the program guide, and for specifying a program including the broadcast start time in the content broadcast time information of the specified content from the program guide;
A content extraction apparatus comprising: extraction means for extracting broadcast data from a broadcast start time in content broadcast time information of a specified content to a broadcast end time in a program guide of the program specified by the program specifying means. List generation means for extracting content after the specified content included in the program specified by the program specifying means from content broadcast time information, and generating a content list;
Broadcast time specifying means for specifying the broadcast time of the broadcast data being reproduced;
Content specifying means for specifying content corresponding to the broadcast time specified by the broadcast time specifying means from among a plurality of contents included in the content list based on the broadcast start time in the content broadcast time information of each content; ,
The content extraction device according to claim 1, further comprising: a display control unit that causes the display device to display content specifying information specified by the content specifying unit as currently played content. Recording means for recording broadcast data including a plurality of contents broadcast from a broadcast station on a storage medium, content broadcast time information in which specific information and broadcast start time of each content broadcast from the broadcast station are associated, and the broadcast An operation program of a content extraction apparatus comprising: a receiving unit that receives a program guide that is associated with information related to specific information and broadcast time zones of a program that is broadcast from a station and includes a plurality of the contents,
A content extraction program for causing a computer to execute a step of extracting broadcast data from a broadcast start time in content broadcast time information of a specified content to a broadcast end time in a program guide of a program including the specified content. Recording broadcast data including a plurality of contents broadcast from a broadcasting station on a storage medium;
Corresponds to the content broadcast time information that associates the specific information and broadcast start time of each content broadcast from the broadcast station, the specific information of the program that is broadcast from the broadcast station and includes a plurality of the content, and information about the broadcast time zone Receiving the attached program guide;
Extracting the broadcast data from the broadcast start time in the content broadcast time information of the specified content to the broadcast end time in the program guide of the program including the specified content.