JP2007059035A - Air check system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air check system by which a desired musical piece is automatically acquired from among many musical pieces broadcasted from a broadcasting station. <P>SOLUTION: A cue sheet server 12 acquires cue sheets which describes broadcast time and titles of the broadcast musical pieces from each respective broadcasting station server 16, converts it into a common format and stores it. A PC 13 of each user acquires a cue sheet from the cue sheet server 12. An FM tuner 14 always receives FM broadcast and the PC 13 records all the pieces of received broadcast data. The PC 13 extracts and reproduces the desired musical piece from among all the recorded broadcast data by referring to the cue sheet. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air check system, and more particularly, to an air check system that automatically acquires desired content from among a large number of contents 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. Therefore, in order to record the desired song, the viewer must continue to listen carefully to the program from the beginning.

  By the way, a broadcasting station uses a cue sheet describing a program progress schedule. The cue sheet details the title of the song that was broadcast, the name of the artist, the broadcast time, etc., but some broadcast stations provide the cue sheet to viewers via the Internet after the program is broadcast. There are some places. This cue sheet allows viewers to know exactly what songs were broadcast when, but since those songs were already broadcast, there was a desired song in them But it is impossible to record now.

  Japanese Patent Application Laid-Open No. 11-177511 (Patent Document 1) discloses a digital broadcast receiving and reproducing apparatus for reproducing a song being broadcast or broadcast from a performance start point in a digital broadcast music program. This apparatus uses the control data multiplexed in the program data stream and transmitted at the start and end of the performance of each broadcast song, and the recording start point for recording the audio data as a recorded song for each song. And the recording end point. However, this apparatus can be used only for digital broadcasting in which control data is multiplexed.

  Japanese Patent Laid-Open No. 11-73730 (Patent Document 2) discloses a broadcast recording apparatus that can easily record music when performing an air check, and can easily reproduce desired music from the recorded music. is doing. This device sets a recording start time with a timer, records the received audio data when the set recording start time is reached, stores on-air information including the song name and broadcast start time information of the song, After the air check is finished, the playback start position on the recording medium is set from the broadcast start time information and the recording start time, and a playback operation from the playback start position is instructed. In addition, playback operation can be performed from the list display of song names. However, this apparatus can also be used only for text multiplex broadcasting in which on-air information is multiplexed.

JP-A-11-177511 JP-A-11-73730 JP 2001-76461 A

  An object of the present invention is to provide an air check system capable of automatically acquiring desired contents from among a large number of contents broadcast from a broadcasting station.

Means for Solving the Problems and Effects of the Invention

  An air check system according to the present invention includes a server and an air check device that can access the server. The server includes storage means and transmission means. The storage means stores a cue sheet in which specific information of each content broadcast from the broadcasting station is associated with a broadcast time. The transmission means reads the cue sheet from the storage means in response to a request from the air check apparatus and transmits it to the air check apparatus. The air check device includes a receiving means, a recording means, an acquiring means, a specifying means, an extracting means, and a reproducing means. The receiving means receives broadcast data including a plurality of contents broadcast from a broadcasting station. The recording means records the broadcast data received by the receiving means on a storage medium. The acquisition unit requests and acquires a cue sheet from the server. The designation means designates desired content in accordance with an input operation by the user. The extracting means refers to the cue sheet acquired by the acquiring means, and extracts the content specified by the specifying means from the broadcast data recorded on the storage medium. The reproduction means reproduces the content extracted by the extraction means. The content here typically includes music broadcast from a radio station, video broadcast from a television station, and the like. In principle, the receiving means and the recording means continue to operate at all times, receive all the broadcast data and record it on the storage medium, but the operation may be temporarily stopped.

  According to this air check system, the air check device receives all broadcast data in principle and records it on a storage medium, and then refers to the cue sheet provided by the broadcast station and records the broadcast data recorded on the storage medium. Since the desired content is extracted from the data, the desired content can be automatically acquired from a large number of contents broadcast from the broadcasting station.

  Preferably, the server further includes format conversion means for converting the formats of the plurality of cue sheets acquired from the plurality of broadcasting stations into a predetermined common format.

  In this case, even if the cue sheet format is different for each broadcasting station, the server converts the cue sheet format into a common format, so the air check device does not need to prepare different acquisition means for each broadcasting station, The program size is reduced. In addition, since the air check device does not need to perform format conversion processing, desired content can be quickly extracted.

  Preferably, the server further includes information adding means for adding predetermined information to the cue sheet. An example of information to be added is a URL (Uniform Resource Locator) of a website that sells the content.

  In this case, by adding some useful information to the cue sheet, the air check device can easily access the information.

  Preferably, the air check device further includes index generation means for dividing the broadcast data into a plurality of sections at predetermined time intervals and generating an index including a start address of each section. Content extraction by the extraction unit is performed with reference to the index generated by the index generation unit.

  In this case, the broadcast data is divided into a plurality of sections every predetermined time, and an index including the start address of each section is generated. It can be extracted reliably.

  Another air check device according to the present invention comprises a receiving means, a recording means, a storage means, a specifying means, an extracting means, and a reproducing means. The receiving means receives broadcast data including a plurality of contents broadcast from a broadcasting station. The recording means records the broadcast data received by the receiving means on a storage medium. The storage means stores a cue sheet in which specific information of each content broadcast from the broadcasting station is associated with a broadcast time. The designation means designates desired content in accordance with an input operation by the user. The extraction means refers to the cue sheet stored in the storage means and extracts the content designated by the designation means from the broadcast data recorded in the storage medium. The reproduction means reproduces the content extracted by the extraction means.

  According to this air check device, in principle, all broadcast data is received and recorded in a storage medium, and then a desired content is extracted from the broadcast data recorded in the storage medium with reference to the cue sheet. Therefore, desired content can be automatically acquired from a large number of content broadcast from a broadcasting station.

  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.

  The PC 13 is a general-purpose device, and includes a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), a hard disk drive (HDD), an optical disk drive, a display, a keyboard, a mouse, and the like. An air check program, which will be described in detail 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]
Referring to FIG. 2, the cue sheet server 12 includes a cue sheet acquisition unit 20, a format conversion unit 21, a service information addition unit 22, and a web server 23. The cue sheet acquisition unit 20 accesses each broadcasting station server 16 and acquires the cue sheet 24 uploaded thereto.

  In the cue sheet 24 provided from each broadcasting station, the broadcast start time, broadcast end time, title, artist name, etc. of the broadcasted music 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 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, broadcast end time, and metadata of the corresponding song. The metadata includes a song name, an artist name, and the like. 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.

  A cue sheet database 28 is constructed in the web server 23, and a cue sheet 29 to which various service information is added is stored. The web server 23 reads the cue sheet 29 from the cue sheet database 28 in response to a request from the PC 13 and transmits it to the PC 13.

Next, the operation of the cue sheet server 12 will be described with reference to FIG.
The cue sheet acquisition unit 20 requests each broadcast station server 16 to transmit the cue sheet 24 (S101). Each broadcasting station server 16 accepts this request (S201), and transmits the cue sheet 24 to the cue sheet server 12 (S202). The cue sheet acquisition unit 20 receives the cue sheet 24 (S102) and supplies it to the format conversion unit 21. The format conversion unit 21 converts the format of the cue sheet 24 into a common format (S103), and supplies the cue sheet 26 in the common format to the service information addition 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).

[FM tuner and PC (air check device)]
Referring to FIG. 6, 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, and the cue sheet database 37 are constructed. The air check program includes an index generation module 38, a web interface 39, a cue sheet 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. 7, 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. 8 (S311) and stores it in the recording situation management database 35 (S312).

  Referring to FIG. 8, the recording status management table 43 includes a field 431 describing a station ID 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. 9 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. 9, portions other than the hatched 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. 10, 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. 11 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. 11, 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. 12, the cue sheet 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 (S331). The web server 23 receives this request (S111), reads the desired cue sheet 29 from the cue sheet database 28, and transmits it to the PC 13 (S112).

  The cue sheet acquisition module 40 receives the cue sheet 29 transmitted from the cue sheet server 12 (S332) and stores it in the cue sheet database 37 (S333). An example of the acquired cue sheet 29 is shown in FIG.

  Referring to FIG. 12 again, if necessary, the web interface 39 in the PC 13 edits the cue sheet 29 in accordance with 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 for each song in the cue sheet described in HTML. The hyperlink includes the station ID of the song, the broadcast start time, and the broadcast end time in addition to the URL of the MP3 file 42 containing the song.

  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, and broadcast end time 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). Details of the extraction method are as follows.

  The web interface 39 refers to the recording status management database 35 and identifies the file name of the MP3 file 42 based on the station ID, broadcast start time, and broadcast end time of the designated song. The web interface 39 refers to the index file 44 corresponding to the specified file name, and extracts MP3 data from the broadcast start time to the broadcast end time in the MP3 file 42 (see FIG. 10). Then, the web interface 39 returns the extracted MP3 data to the web browser 33.

  In addition to extraction in units of music as described above, the user can specify the start time and end time manually to perform extraction in units of programs, or specify only the start time to perform endless playback. It is also possible to do.

  The web browser 33 activates the MP3 player 15, and the MP3 player 15 plays the music designated based on the MP3 data (S339).

  If the above operation is continued, a huge amount of data is accumulated in a storage medium such as a hard disk. Therefore, the sweeper module 41 in the PC 13 periodically (eg, every week) deletes the MP3 file 42, the recording status management table 43, the index file 44, and the cue sheet 29 that have passed a predetermined period (eg, one month). . The erasing cycle and the erasing target are appropriately determined according to the capacity of the storage medium.

  As described above, according to the embodiment of the present invention, the PC 13 stores all broadcast data received by the FM tuner 14 in the MP3 database 34, and then refers to the cue sheet 29 acquired from the cue sheet server 12. Since a desired song is extracted from the stored broadcast data, the desired song can be automatically acquired from a large number of songs broadcast from the broadcasting station.

  Even if the format of the cue sheet 24 is different for each broadcasting station, since the cue sheet server 12 converts the format of the cue sheet 24 into a common format, the PC 13 refers to the cue sheet 29 in the common format and promptly selects it. Can be extracted.

  Further, the MP3 file 42 is divided into a plurality of sections 45 at predetermined time intervals, and an index file 44 including the offset of each section 45 is generated. Therefore, the PC 13 refers to the index file 44 to determine a desired song. Extraction can be made reliably in time units.

  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. . 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, both the broadcast start time and the broadcast end time are used. However, either one (typically the broadcast start time) may be used, in other words, even the broadcast time of the content is specified. If possible.

  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.

  Moreover, although the said embodiment is an example in case the broadcasting station provides the cue sheet, when the broadcasting station does not provide the cue sheet, it replaces with the cue sheet | seat acquisition part 20 shown in FIG. As shown in FIG. 14, a cue sheet input unit 46 for inputting a cue sheet in accordance with an input operation by a business operator may be provided. In this case, it is only necessary to input the cue sheet in a common format, so that the format conversion unit 21 shown in FIG. 2 need not be provided.

  Further, in the case of community FM or personal broadcasting, it is difficult to provide the cue sheets 24 and 29 from the broadcast station server 16 and the cue sheet server 12 shown in FIG. Therefore, in such a case, instead of the cue sheet acquisition module 40 shown in FIG. 6, as shown in FIG. 15, a cue sheet input unit 48 for inputting a cue sheet according to an input operation by the user may be provided. Good. The cue sheet input unit 48 stores the input cue sheet 29 in the cue sheet database 37.

  In the above embodiment, the PC 13 obtains the cue sheet provided from each broadcasting station via the cue sheet server 12, but may obtain it directly from each broadcasting station. Specifically, the cue sheet acquisition module 40 illustrated in FIG. 6 directly accesses each broadcasting station server 16 instead of the cue sheet server 12. Since the format of the cue sheet is different for each broadcasting station, in this case, as shown in FIG. 16, a format conversion unit 21 that converts the acquired cue sheet format into a common format may be provided in the PC 13. The format conversion unit 21 stores the cue sheet 29 having the common format in the cue sheet database 37. However, if the cue sheet provided from the broadcasting station already has a common format, the cue sheet acquisition module 40 may bypass the format conversion unit 21 and directly write the acquired cue sheet into the cue sheet database 37.

  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 order to receive broadcast data via the Internet, a broadcast data acquisition module 50 may be provided in the PC 13 as shown in FIG. 17, instead of the FM tuner 14, ADC 31 and MP3 encoder 32 shown in FIG. The broadcast data acquisition module 50 accesses the broadcast station server 16 and requests to transmit broadcast data uploaded in a state where it can be acquired (or broadcast data distributed as a real-time stream). Since the broadcast station server 16 returns broadcast data in response to this request, the broadcast data acquisition module 50 receives the returned broadcast data and stores it in the MP3 database 34. That is, the broadcast data acquisition module 50 downloads broadcast data from the broadcast station server 16.

  In the example shown in FIG. 17, the cue sheet acquisition module 40 directly acquires the cue sheet from the broadcast station server 16, and the format conversion unit 21 converts the cue sheet format into a common format. As shown, the cue sheet acquisition module 40 may acquire a cue sheet from the cue sheet server 12, or the cue sheet input unit 48 may input a cue sheet as shown in FIG.

  If the cue sheet is multiplexed with broadcast data, a demultiplexer (DMUX) 52 may be provided as shown in FIG. The demultiplexer 52 has a function of acquiring a cue sheet instead of the cue sheet acquisition module 40, and separates the cue sheet from the broadcast data acquired by the broadcast data acquisition module 50. The broadcast data itself is stored in the MP3 database 34, and the separated cue sheet is stored in the cue sheet database 37. If the cue sheet has a unique format, the cue sheet is converted into a common format by the format conversion unit 21 and then stored in the cue sheet database 37.

  Further, like FM character multiplex broadcasting, it is also possible to multiplex cue sheets as character information by the DARC (DAta Radio Channel) method or the like on broadcast data transmitted by radio broadcasting. In this case, as shown in FIG. 19, the cue sheet is separated by the demultiplexer 52 from the broadcast data received by the receiving unit 54 using the FM tuner 14 for FM character multiplex broadcasting. The broadcast data itself is stored in the MP3 database 34 via the ADC 31 and the MP3 encoder 32. On the other hand, the separated cue sheet is converted into a common format as necessary and stored in the cue sheet database 37.

  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. 6 may be used, but a cue sheet is acquired for an air check device that does not have a network interface. Modules cannot be provided. Therefore, in such a case, as shown in FIG. 20, a cue sheet acquisition module 40 may be provided in a PC 56 having a network interface, and the PC 56 may be connected to the input / output interface 60 of the air check device 58. As the input / output interface 60, a memory card may be used in addition to USB (Universal Serial Bus), IrDA (Infrared Data Association), and the like.

  In this example, the PC 56 acquires a cue sheet from the cue sheet server 12 or the broadcast station server 16 by the cue sheet acquisition module 40 and stores it in the cue sheet database 37 via the input / output interface 60 of the air check device 58. When the format of the cue sheet acquired by the cue sheet acquisition module 40 is not a common format, the format conversion unit 56 may be provided in the PC 56 or the air check device 58 as shown in FIG. Instead of the PC 56, a portable information terminal such as a mobile phone or a PDA may be used.

  In addition, the web browser 33 and the MP3 player 15 are provided in the PC 13 or the air check device 58, but other PCs connected via a network such as a LAN (Local Area Network) or a WAN (Wide Area Network), dedicated It may be provided in a machine, a mobile phone, or a 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.

  While the embodiments of the present invention have been described above, the above-described embodiments are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above-described embodiment, and can be implemented by appropriately modifying the above-described embodiment without departing from the spirit thereof.

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 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 by 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. 7 is a flowchart showing operations of the cue sheet server and the PC shown in FIGS. 2 and 6. It is a figure which shows an example of the cue sheet | seat used for extraction of the music shown in FIG. It is a figure which shows the other example of the cue sheet | seat server by embodiment of this invention. It is a figure which shows the other example of PC by embodiment of this invention. It is a figure which shows the further another example of PC by embodiment of this invention. It is a figure which shows the further another example of PC by embodiment of this invention. It is a figure which shows the further another example of PC by embodiment of this invention. It is a figure which shows the other example of FM tuner and PC by embodiment of this invention. It is a figure which shows the other example of the air check apparatus by embodiment of this invention.

Explanation of symbols

10 Air Check System 12 Cue Sheet Server 14 FM Tuner 15 MP3 Player 16 Broadcast Station Server 20 Cue Sheet Acquisition Unit 21, 56 Format Conversion Unit 22 Service Information Addition Unit 23 Web Servers 24, 26, 29 Cue Sheet 28 Cue Sheet Database 33 Web Browser 34 MP3 database 35 Recording status management database 36 Index database 37 Cue sheet database 38 Index generation module 39 Web interface 40 Cue sheet acquisition module 42 MP3 file 43 Recording status management table 44 Index file 45 Section 50 Broadcast data acquisition module 52 Demultiplexer 58 Air check device 261,431,441 Field 262,432,4 2 record

Claims (13)

An air check system comprising a server and an air check device accessible to the server,
The server
Storage means for storing a cue sheet in which specific information and broadcast time of each content broadcast from a broadcasting station are associated;
Transmission means for reading a cue sheet from the storage means in response to a request from the air check device and transmitting it to the air check device;
The air check device is
Receiving means for receiving broadcast data including a plurality of contents broadcast from a broadcasting station;
Recording means for recording the broadcast data received by the receiving means in a storage medium;
Obtaining means for requesting and obtaining a cue sheet from the server;
A designation means for designating desired content in response to an input operation by a user;
Extraction means for referring to the cue sheet acquired by the acquisition means and extracting the content designated by the designation means from the broadcast data recorded on the storage medium;
And an air check system for playing back the content extracted by the extracting means. The air check system according to claim 1,
The server further includes:
An air check system, comprising: format conversion means for converting a plurality of cue sheet formats obtained from a plurality of broadcasting stations into a predetermined common format. The air check system according to claim 1 or 2,
The server further includes:
An air check system comprising information adding means for adding predetermined information to the cue sheet. The air check system according to any one of claims 1 to 3,
The air check device further includes
Including index generation means for dividing broadcast data into a plurality of sections at predetermined time intervals and generating an index including a start address of each section;
The air check system according to claim 1, wherein the extraction of content by the extraction means is performed with reference to the index generated by the index generation means. Receiving means for receiving broadcast data including a plurality of contents broadcast from a broadcasting station;
Recording means for recording the broadcast data received by the receiving means in a storage medium;
An acquisition means for acquiring a cue sheet in which specific information and broadcast time of each content broadcast from a broadcasting station are associated;
A designation means for designating desired content in response to an input operation by a user;
Extraction means for referring to the cue sheet acquired by the acquisition means and extracting the content designated by the designation means from the broadcast data recorded on the storage medium;
An air check apparatus comprising: a reproducing unit that reproduces the content extracted by the extracting unit. The air check device according to claim 5, further comprising:
The broadcast data is divided into a plurality of sections every predetermined time, and an index generation means for generating an index including a start address of each section is provided.
The air check apparatus according to claim 1, wherein the extraction of content by the extraction unit is performed with reference to the index created by the index generation unit. Recording broadcast data including a plurality of contents broadcast from a broadcasting station and received by a receiver on a storage medium;
Obtaining a cue sheet that associates specific information and broadcast time of each content broadcast from a broadcast station;
An air check program for causing a computer to execute a step of referring to the acquired cue sheet and extracting a desired content from the content recorded on the storage medium for reproduction by a player. The air check program according to claim 7, further comprising:
Dividing the broadcast data into a plurality of sections at predetermined time intervals and causing a computer to execute an index including a start address of each section;
The extracting step is performed with reference to an index created by the index generation.   It has a field describing an identifier assigned to each broadcasting station and a plurality of records corresponding to a plurality of contents broadcast from the broadcasting station, and each record describes specific information and broadcasting time of the corresponding contents. A cue sheet used by the air check system according to claim 1. Receiving means for receiving broadcast data including a plurality of contents broadcast from a broadcasting station;
Recording means for recording the broadcast data received by the receiving means in a storage medium;
Storage means for storing a cue sheet in which specific information and broadcast time of each content broadcast from a broadcasting station are associated;
A designation means for designating desired content in response to an input operation by a user;
Extraction means for referring to the cue sheet stored in the storage means and extracting the content designated by the designation means from the broadcast data recorded in the storage medium;
An air check apparatus comprising: a reproducing unit that reproduces the content extracted by the extracting unit. The air check device according to claim 10, further comprising:
An air check apparatus comprising: an acquisition unit that acquires the cue sheet from outside and stores the cue sheet in the storage unit. The air check device according to claim 11,
The cue sheet is multiplexed with the broadcast data,
The air check apparatus, wherein the acquisition unit separates the cue sheet from the broadcast data received by the reception unit. The air check device according to claim 11 or 12, further comprising:
An air check apparatus comprising: a format conversion means for converting a plurality of cue sheet formats acquired by the acquisition means into a predetermined common format.

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