JP2006040441A - Recording device for broadcast - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a recording device for broadcast which performs autorecording by adding information on a tune to the broadcasted tune. <P>SOLUTION: The recording device for the broadcast 1 is equipped with a receiving means 3 for receiving the broadcast in which character information is multiplexed, and demodulating an audio signal and the character information; a tune separation means 10 for separating the tune portion included in the audio signal; a tune storing means 14 for adding time information indicating the time when the tune is transmitted to the tune separated by the tune separation means 10 and storing it; a tune information extraction means 10 for extracting the tune information regarding the tune transmitted by broadcast from the character information; a tune information storing means 13 for attaching the time information indicating the time when the tune information is transmitted to the extracted tune information; and a tune information adding means 10 in which the time information on the tune stored in the tune storing means 14 is compared with the time information on the tune stored in the tune information storing means 13, the tune information regarding each of the tunes stored in the tune storing means 14 is acquired, and the tune information is added to the tune. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a broadcast recording apparatus, which is suitable for use in receiving a broadcast and recording music.

  Conventionally, an air check for receiving a radio broadcast and recording desired music or the like on a cassette tape or a mini-disc is generally performed.

In addition, a system has been proposed in which a radio receiver is connected to a personal computer, and music received by the radio receiver is recorded on a hard disk of the personal computer (see, for example, Patent Document 1).
JP 2003-18032 A

  However, when performing the air check described above, the recording is started or stopped in accordance with the transmission of the target music to be recorded, or the program is continuously recorded and the target music is recorded after the recording is completed. There is a problem that the user is forced to perform complicated operations.

  In addition, music information such as song name and artist name can be added to music data in a mini-disc, personal computer, etc., but when trying to add music information to a song recorded by the air check described above, For example, it is necessary to find music information from a program guide such as a newspaper and manually input the music information in correspondence with the music, and there is a problem that the user is forced to perform more complicated operations.

  The present invention has been made in view of the above points, and an object of the present invention is to propose a broadcast recording apparatus that can automatically record music by adding music information to the broadcasted music.

  In order to solve such a problem, in the present invention, a receiving means for receiving a broadcast in which character information is multiplexed, demodulating the sound signal and the character information, and a music separating means for separating a music portion included in the sound signal; The music storage means for storing the music separated by the music separation means with time information indicating the time when the music was transmitted, and the music information about the music transmitted by broadcasting is extracted from the character information. Music information extraction means, music information storage means for storing the extracted music information with time information indicating the time when the music information was transmitted, and time information of the music stored in the music storage means And the time information of the music information stored in the music information storage means, the music information for each music stored in the music storage means is obtained, and It provided a music information adding means for adding the music information to the broadcast recording device.

  By separating the music from the sound obtained by receiving the broadcast, extracting the music information from the character information, and adding the music information to the music stored in the music storage means based on the respective time information, The music information can be added to the broadcasted music and automatically recorded without any special operation.

  According to the present invention, the music is separated from the sound obtained by receiving the broadcast, the music information is extracted from the character information, and the music information is added to the music stored in the music storage unit based on each time information. By doing so, it is possible to realize a broadcast recording system that can automatically record music by adding music information to the broadcasted music without requiring any special operation.

  Hereinafter, an embodiment of the invention will be described in detail with reference to the drawings.

(1) Overall Configuration of Broadcast Recording System In FIG. 1, reference numeral 1 generally indicates a broadcast recording system as a broadcast recording apparatus according to the present invention. A personal computer 2 and an FM (Frequency Modulation) receiver 3 are connected by a USB (Universal Serial Bus) Connected and configured.

  The personal computer 2 has a central processing unit (CPU) 10 for overall control of the personal computer 2, a ROM (Read Only Memory) 12, a RAM (Random-Access Memory) 13, a hard disk drive via a bus 11. 14, for example, a display unit 15 composed of a liquid crystal display, an operation unit 16 composed of a keyboard and a mouse, a speaker 17 and a USB interface 18 are connected.

  The CPU 10 implements various functions of the personal computer 2 by executing various application programs such as an operating system stored in the hard disk drive 14 and an automatic music recording program described later on the RAM 13.

  On the other hand, the FM receiver 3 as a receiving means controls the CPU 20, which controls the FM receiver 3 in an integrated manner, via a bus 21, a tuner 22, an audio processing circuit 23, a character information decoder 24, a USB interface 25, and a speaker. 26 is connected.

  The CPU 20 of the FM receiver 3 controls the tuner 22 in accordance with control signals supplied from the personal computer 2 via the USB interfaces 18 and 25. The tuner 22 demodulates the FM broadcast wave received via the antenna 26 and supplies the demodulated signal to the audio processing circuit 23 and the character broadcast decoder 24.

  Here, on FM broadcast waves, broadcast audio signals and character information including information such as program names and music names transmitted in the programs are multiplexed and broadcast. The audio processing circuit 23 generates an audio signal from the demodulated signal, reproduces it via the speaker 26, and supplies audio data obtained by digitally converting the audio signal to the personal computer 2 via the USB interface 25. The character broadcast decoder 24 separates character information from the demodulated signal and supplies it to the personal computer 2 via the USB interface 25. Then, the CPU 10 of the personal computer 2 records music included in the audio data supplied from the FM receiver 3 on the hard disk drive 14 in accordance with an automatic music recording program to be described later.

(2) Automatic Music Recording Program FIG. 2 shows a task configuration of the automatic music recording program, and the CPU 10 processes the four tasks of a voice data storage task, a music separation task, a character information analysis task, and a music name addition task simultaneously in parallel. It is made like that.

  In the audio data storage task, the CPU 10 temporarily stores the audio data supplied from the FM receiver 3 in the RAM 13.

  Further, in the music separation task, the CPU 10 as the music separation means separates the voice data stored in the RAM 13 into voice data consisting of a voice part such as an announcer and music data consisting of a music part, and only the music data is, for example, Compression is performed using a compression format such as MP3 (MPEG Audio Layer 3), and the transmission start time and transmission end time of the music that is the source of the music data are associated with each other and stored in the hard disk drive 14 as music storage means.

  The analysis method for separating the voice data into voice data and music data is not particularly limited. For example, a human voice is sampled, and the feature points of the sampled data and the feature points of the received voice data are Can be used as a voice data when the degree of coincidence is high and separated as music data when the degree of coincidence is low. In addition, since a silent section appears at a relatively short interval in the conversation, the silent section in the voice data is detected, and the voice data and the music data are separated based on the generation interval of the silent section. Also good.

  On the other hand, in the character information analysis task, the CPU 10 as the music information extraction means analyzes the character string of the character information supplied from the FM receiver 3 and extracts the music information (song name and artist name) included in the character information. The time information at the time when the music information was transmitted is associated and stored in the RAM 13 as music information storage means. In general, the music information in the character information is provided in a fixed format such as ““ Song name ”/“ Artist name ”.” The CPU 10 compares the character information with the character information and the format of the music information. Extract music information from text information.

  At this time, by using a database of artist names and music titles in combination, the extraction accuracy when extracting music information from character information can be improved. As this database, for example, information such as CDDB (CD Data Base) published on the Internet can be used.

  Then, the CPU 10 as the music information adding means in the music name adding task searches for music data to which no music information is added from among a plurality of music data stored in the hard disk drive 14 by the music separation task. Then, for the music data to which the music information is not added, the CPU 10 collates the transmission start time and transmission end time for the music data with the time information of the music information stored in the RAM 13, thereby The music information provided during the broadcast is searched, and the music information is added to the music data.

  At this time, basically, the music information provided first after the music transmission is started may be used as the music information of the music, but the music transmission timing in the actual broadcast and the music information about the music are provided. There may be a slight deviation from the timing. For this reason, for example, the music information provided before and after the transmission of the music may be used, or the music information provided most during the music transmission period may be used.

  Thus, the CPU 10 of the personal computer 2 extracts music data from the audio data supplied from the FM receiver 3, adds music information, and stores the music data in the hard disk drive 14.

  For this reason, when the music data stored in the hard disk drive 14 is reproduced, the music information is displayed on the display screen of the music data reproduction program, so that the user can easily select desired music data based on the music information. Can be selected.

(3) Operation and Effect In the above configuration, the CPU 10 of the personal computer 2 temporarily stores the audio data supplied from the FM receiver 3 in the RAM 13, and then separates the audio data into voice data and music data. Then, only the music data is compressed and the transmission start time and the transmission end time are associated with each other and stored in the hard disk drive 14.

  At the same time, the CPU 10 extracts music information from the character information supplied from the FM receiver 3 and associates the time information at the time when the music information was transmitted with the information stored in the RAM 13.

  The CPU 10 collates the transmission start time and transmission end time of the music data stored in the hard disk drive 14 with the time information of the music information stored in the RAM 13, thereby providing the music provided during transmission of the music data. Information is searched and the music information is added to the music data.

  As a result, the broadcast recording system 1 can automatically record music by adding music information to the broadcasted music without forcing the user to perform special operations.

  According to the above configuration, the music data is separated from the audio data obtained by receiving the broadcast, the music information is extracted from the character information, and the music information is added to the music data based on the respective time information. By storing in the drive 14, it is possible to realize a broadcast recording system capable of automatically recording by adding music information to the broadcasted music by a simple operation.

(4) Other Embodiments In the above-described embodiment, the broadcast recording system 1 is configured by connecting the personal computer 2 and the FM receiver 3 via USB. However, the present invention is not limited to this, and the FM tuner is not limited thereto. The present invention can be applied to broadcast recording apparatuses having various other configurations such as personal computers, hard disk recorders, mini-components, and the like.

  In the above-described embodiment, the CPU 10 of the personal computer 2 performs a series of automatic music such as separation of music data, extraction of music information, and addition of music information to music data according to an automatic music recording program stored in the hard disk drive. Although the recording process is executed, the present invention is not limited to this, and the automatic music recording process described above is executed by installing a program storage medium storing the automatic music recording program in the personal computer 2. May be.

  As a program storage medium for installing the automatic music recording program described above in the personal computer 2, for example, only a package medium such as a flexible disk, a CD-ROM (Compact Disc-Read Only Memory), a DVD (Digital Versatile Disc), etc. Instead, it may be realized by a semiconductor memory, a magnetic disk, or the like in which the transmission control program is stored temporarily or permanently.

  The broadcast recording apparatus of the present invention can be applied to the use of receiving a broadcast and automatically recording music.

It is a block diagram which shows the structure of the broadcast recording apparatus by this invention. It is a basic diagram which shows the task structure of an automatic music recording program.

Explanation of symbols

1 ... broadcast recording device, 2 ... personal computer, 3 ... FM receiver, 10, 20 ... CPU, 11, 21 ... bus, 12 ... ROM, 13 ... RAM, 14 ... hard disk drive, DESCRIPTION OF SYMBOLS 15 ... Display part, 16 ... Operation part, 17, 26 ... Speaker, 18 ..., 25 ... USB interface, 22 ... Tuner, 23 ... Voice processing circuit, 24 ... Character information decoder, 26 ... …antenna.

Claims (2)

Receiving means for receiving a broadcast in which character information is multiplexed, and demodulating an audio signal and the character information;
Music separation means for separating music parts included in the audio signal;
Music storage means for storing the music separated by the music separation means with time information indicating the time when the music was transmitted;
Music information extracting means for extracting music information about the music transmitted by the broadcast from the character information;
Music information storage means for storing the extracted music information with time information indicating the time when the music information was transmitted;
Each piece of music stored in the music storage means by collating time information of the music stored in the music storage means with time information of the music information stored in the music information storage means A broadcast recording apparatus comprising: music information adding means for acquiring the music information and adding the music information to the music. Receiving a broadcast in which the character information is multiplexed, and demodulating the audio signal and the character information;
A music separation step of separating a music part included in the audio signal;
A music storage step for storing in the music storage means with time information indicating the time when the music was transmitted to the music separated by the music separation step;
A music information extraction step of extracting music information about the music transmitted by the broadcast from the character information;
A music information storage step for storing in the music information storage means with time information indicating the time when the music information was transmitted to the extracted music information;
Each piece of music stored in the music storage means by comparing the time information of the music stored in the music storage means with the time information of the music information stored in the music information storage means A broadcast recording method comprising: acquiring the music information about the music, and adding a music information adding step for adding the music information to the music.

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