JP4014968B2 - Audio equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an audio apparatus for receiving and recording a digital radio broadcast broadcast using a satellite.
[0002]
[Prior art]
In recent years, satellite digital radio broadcasting for broadcasting radio programs using broadcasting satellites has been implemented in the United States and the like. This type of satellite digital radio broadcasting uses S-band radio waves that are less attenuated due to rainfall, etc., and transmits radio waves from satellites using high-power repeaters, enabling stable reception with small antennas, automobiles, etc. It is extremely suitable for listening to radio broadcasts on mobiles.
[0003]
Also, in satellite digital radio broadcasting, high-quality radio broadcasting can be listened to anywhere by installing terrestrial re-transmission equipment (gap filler) in places where radio waves from satellites such as building shadows, mountainous areas, and tunnels do not reach. Will be able to.
[0004]
Satellite digital radio broadcasting employs a TDM (Time Division Multiplex) system, and programs of several tens to 100 channels or more are broadcast simultaneously. The radio receiver extracts data of a channel desired by the user from the received signal and provides a program to the user.
[0005]
In satellite digital radio broadcasting, program additional information is sent together with music data (audio signals). In the program additional information, in addition to the channel number and channel name of the program, for example, when music is being broadcast, song name, artist name, title (song name), category, elapsed time (elapsed time from the beginning of the song), etc. Information is included.
[0006]
In the audio apparatus, various functions are realized using program additional information. For example, the name of the program being listened to, the name of the song being played, and the name of the artist can be displayed on the display device. It is also possible to automatically change the channel so that only the desired category (genre) or artist's music is listened to.
[0007]
[Problems to be solved by the invention]
Incidentally, there is a demand for an audio device that records satellite digital radio broadcasts on a data recording device such as a hard disk. In this type of audio device, since the capacity of the data recording device is sufficiently large, it is possible to store thousands of music data and program additional information, and to simultaneously record a plurality of channels of broadcasting. The music data recorded on the audio device is reproduced by reading it from the hard disk and converting it into an analog audio signal.
[0008]
However, it is complicated for the user to select a favorite song from among thousands of songs recorded on the hard disk.
[0009]
In view of the above, an object of the present invention is to provide an audio apparatus having a function of assisting an operation when a user selects a desired piece of music from a data recording apparatus that records satellite digital radio broadcasts.
[0010]
[Means for Solving the Problems]
The above-described problems include a receiving unit that receives a digital radio broadcast in which broadcasts of a plurality of channels are multiplexed and outputs music data and program additional information of a song broadcast on the digital radio broadcast, and an output from the receiving unit A data recording unit that records the music data and program additional information of the recorded music together with the broadcast date and time data, and the recommended music under the set conditions based on the program additional information and the broadcast date and time data recorded in the data recording unit A list creating unit for creating a list; a decoder for converting music data read from the data recording unit into an analog audio signal; a control unit for controlling the receiving unit and the list creating unit in accordance with a user operation; have a, the data recording section, when recording music data of the music output from the receiving unit, already music data of the musical composition If you are recording is already music data recorded the song is solved by an audio device, characterized in that the addition of only the broadcasting date data for the music data of the music output from the receiving unit.
[0011]
In the present invention, music data and program additional information output from the receiving unit are stored in the data recording unit. The list creation unit creates a recommended music list based on the program additional information and the broadcast date / time data in accordance with an instruction from the control unit.
[0012]
For example, the control unit instructs the list creation unit to create a recommended music list every week. Thereby, the list creation unit examines the broadcast date and time data of each song stored in the data recording unit, extracts the songs broadcast within one week, and further counts the number of broadcasts of those songs. Then, the recommended music list is created by arranging the results in descending order of the number of broadcasts. With this recommended music list, the user can know the music that is popular recently, and can use it as a judgment material when selecting music.
[0013]
In addition, a weekly recommended music list created in this way is stored in the data recording unit, and a list of songs popular in that year based on the recommended music list (second recommended music list), for example. Can also be created.
[0014]
In satellite digital radio, since broadcasts of a plurality of channels are multiplexed, broadcasts of a plurality of channels can be received simultaneously by a single receiver. Further, when a hard disk is used as the data recording unit, data can be written at high speed, so that broadcasts of a plurality of channels can be recorded simultaneously. Therefore, if not only the broadcast of the channel that the user is currently listening to but also the broadcast of other channels are recorded in the data recording unit at the same time, more music data can be collected.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0016]
FIG. 1 is a schematic diagram showing a satellite digital radio broadcasting system. In the satellite radio broadcasting system, a plurality (two in the figure) of broadcasting satellites (stationary satellites) 11 are used, and a digital radio signal in which broadcasting of a large number of channels is multiplexed is transmitted from the broadcasting main station 10 to the broadcasting satellite 11. It is done. The geostationary satellite 11 transmits the received signal to the ground via a high-power transponder (repeater).
[0017]
The digital radio receiver 13 can directly receive a signal transmitted from the broadcast satellite 11. In addition, the radio wave retransmitted by the terrestrial repeater (gap filler) 12 can be received where the radio wave from the broadcasting satellite 11 does not reach, such as in the shadow of a building, in a mountainous area, or in a tunnel.
[0018]
FIG. 2 is a diagram showing a data structure of satellite digital radio broadcasting.
[0019]
In satellite digital radio broadcasting, as shown in FIG. 2, a plurality of channels are multiplexed into one satellite digital radio broadcast signal and transmitted in units of frames. One channel is composed of music data and program additional information in the case of a music program. The program additional information includes a program name, artist name, title (song name), category, and elapsed time (time from the beginning of the song). ) Etc. are included.
[0020]
FIG. 3 is a block diagram showing the configuration of the audio apparatus (digital radio receiver) according to the embodiment of the present invention.
[0021]
The audio apparatus according to the present embodiment includes a receiving unit 21, an audio signal switching unit 22, a decoder 23, a list creating unit 24, a hard disk controller 25, a hard disk 26, a system controller 27, an operation unit 28, And a display unit 29.
[0022]
The receiving unit 21 receives a satellite digital radio signal, and detects and demodulates the signal. Then, music data (audio signal) of a predetermined channel is output to the audio signal switching unit 22 in accordance with a signal from the system controller 27, and the music data and its program additional information are output to the hard disk controller 25. The hard disk controller 25 controls the hard disk 26 in accordance with a signal from the system controller 27 to write and read data.
[0023]
The audio signal switching unit 22 receives music data from either the receiving unit 21 or the hard disk controller 25 in accordance with a signal from the system controller 27 and transmits the music data to the decoder 23. The decoder 23 demodulates the music data input from the audio signal switching unit 22, converts it into an analog audio signal, and outputs the analog audio signal. This analog audio signal is output to a speaker (not shown) via an amplifier (not shown).
[0024]
The operation unit 28 is provided with various operation buttons and the like for operating the audio device. The system controller 27 controls the receiving unit 21, the audio signal switching unit 22, the hard disk controller 25, and the like according to a signal from the operation unit 28.
[0025]
The display unit 29 is configured by a liquid crystal panel or the like, and displays information such as a channel being received, a song name of a song being played, and an artist name in accordance with a signal from the system controller 27.
[0026]
The list creation unit 24 is controlled by the system controller 27 to create a playlist (recommended music list). Details of the playlist will be described later.
[0027]
Hereinafter, the operation of the audio apparatus according to the present embodiment will be described. In order to simplify the explanation, it is assumed that the user has a reception contract from 1 to 10 channels among many channels of satellite digital radio broadcasting.
[0028]
When the user operates the operation unit 28 and designates a predetermined channel among the channels for which the reception is contracted, the system controller 27 controls the receiving unit 21 and the audio signal switching unit 22 to set the channel set by the user. Music data is input to the decoder 23. Thereby, the program of the set channel is provided to the user.
[0029]
On the other hand, the system controller 27 controls the receiving unit 21 to send all the music data from the 1st channel to the 10th channel for which a reception contract is made and the program additional information to the hard disk controller 25. The hard disk controller 25 records these music data and program additional information on the hard disk 26 together with the broadcast date and time (time stamp). However, when music data of the same music is already stored in the hard disk 26, only the broadcast date and time is stored in association with the music data. When the free storage capacity of the hard disk 26 is reduced, the hard disk controller 25 discards old data and preferentially stores new data on the hard disk 26.
[0030]
In the present embodiment, the music data is extracted from all the channels that have a reception contract as described above and recorded on the hard disk 26. However, the music data of the channel that the user is listening to and the addition of the program are added. Only information may be recorded on the hard disk 26. Further, only music data of one or more categories (for example, J-POP, jazz, rock, blues, etc.) set by the user may be recorded on the hard disk 26.
[0031]
In this way, music data and program additional information of a large number of music pieces transmitted by satellite digital radio broadcasting are automatically recorded on the hard disk 26. The music recorded on the hard disk 26 can be searched by music name, artist name, broadcast date, etc. as will be described later. The music data of the searched music is read from the hard disk 26 and converted into an analog audio signal by the decoder 23. It is also possible to convert and play back.
[0032]
Hereinafter, the operation of the list creation unit 24 will be described. The system controller 27 controls the list creation unit 24 at regular intervals to instruct the creation of a playlist (recommended music list).
[0033]
FIG. 4 is a flowchart showing an operation when a weekly ranking is created as a playlist.
[0034]
First, in step S11, the system controller 27 instructs the list creation unit 24 to create a playlist (weekly ranking), for example, every weekend. As a result, the process proceeds to step S12, and the list creation unit 24 controls the hard disk controller 25 to extract all the music recorded in the week. Then, it transfers to step S13 and investigates the frequency | count of broadcast for every those music. However, music with a small number of broadcasts (for example, a weekly broadcast number of 3 or less) may be excluded from the playlist.
[0035]
Next, the process proceeds to step S14 to create a playlist (weekly ranking) in which the extracted music is arranged in descending order of the number of broadcasts. This playlist is recorded on the hard disk 26.
[0036]
In addition, the list creation unit 24 creates a monthly playlist (monthly ranking) by the same method, and records it in the hard disk 26. The play list may be composed of, for example, about 10 to 50 songs with the highest number of broadcasts. In addition, it is preferable not to automatically delete the music data of the top 10 to 20 songs even if the free space of the hard disk 26 is reduced.
[0037]
FIG. 5 is a flowchart showing an operation when an annual ranking (second recommended music list) is created as a playlist.
[0038]
First, the system controller 27 instructs the list creation unit 24 to create an annual ranking every year, for example. Thereby, the process proceeds to step S21, and the list creation unit 24 controls the hard disk controller 25 to read out the monthly ranking (or weekly ranking) for one year.
[0039]
Thereafter, the process proceeds to step S22, and the list creation unit 24 extracts music registered in the monthly ranking (or weekly ranking). And it transfers to step S23 and totals the frequency | count of broadcast for every extracted music.
[0040]
Next, proceeding to step S24, the list creation unit 24 creates a playlist (annual ranking) in which songs are arranged in descending order of the number of broadcasts. This playlist is also recorded on the hard disk 26.
[0041]
In this way, the weekly ranking, the monthly ranking, and the annual ranking are automatically recorded on the hard disk 26 as a playlist.
[0042]
FIG. 6 is a diagram illustrating an example of a screen displayed on the display unit 29 when a music piece recorded on the hard disk 26 is selected.
[0043]
In the example shown in FIG. 6, the music recorded on the hard disk 26 can be searched from the broadcast date, ranking, artist, and song name.
[0044]
When the user selects annual ranking, monthly ranking, or weekly ranking, the system controller 27 reads the playlist of annual ranking, monthly ranking, or weekly ranking from the hard disk 26 via the hard disk controller 25 and displays it on the display unit 29. FIG. 7 is a diagram illustrating an example in which a weekly ranking playlist is displayed on the display unit 29. When the user designates a desired music piece in this playlist, the system controller 27 reads out music data from the hard disk 26 via the hard disk controller 25 and starts playing the music piece.
[0045]
As described above, in the present embodiment, a list of songs with a large number of broadcasts (that is, popular songs) is automatically created and provided to the user, which is very useful when the user selects a song. Thereby, the effect that the usability of the audio apparatus is remarkably improved can be obtained.
[0046]
When the user selects a broadcast date on the screen shown in FIG. 6, a screen for designating the broadcast date is displayed on the display unit 29. When the user designates the broadcast date on the broadcast date designation screen, the system controller 27 controls the hard disk controller 25 to select the data of the music broadcast on the designated date among the music recorded on the hard disk 26 (for example, (Broadcast channel, artist name, song name, broadcast time, etc.) are displayed on the display unit 29 in a list format. When the user designates a song in this list, the system controller 27 reads the music data of the corresponding song from the hard disk 26 via the hard disk controller 25 and sends the music data to the decoder 23 via the audio signal switching unit 22. Thereby, the music designated by the user is reproduced.
[0047]
When the user selects an artist on the screen shown in FIG. 6, a screen for designating the artist is displayed on the display unit 29. When the user designates a desired artist on this artist designation screen, the system controller 27 controls the hard disk controller 25 to list the music data of the designated artist on the display unit 29 among the music recorded on the hard disk 26. Display in format. When the user designates a song in the list, the system controller 27 reads the music data of the corresponding song from the hard disk 26 via the hard disk controller 25 and reproduces the song.
[0048]
When the user selects a song name on the screen shown in FIG. 6, a screen for designating the song name is displayed on the display unit 29. When the user designates a song name on this song name designation screen, the system controller 27 controls the hard disk controller 25 so that the music data of the designated song name among the songs recorded on the hard disk 26 is displayed on the display unit 29 in a list format. indicate. When the user designates a song in the list, the system controller 27 reads the music data of the corresponding song from the hard disk 26 via the hard disk controller 25 and reproduces the song.
[0049]
In the present embodiment, the weekly ranking, monthly ranking, and annual ranking are created for each song as described above. However, the playlist for weekly ranking, monthly ranking, and annual ranking for each artist is created. Also good. Also, a weekly ranking, a monthly ranking, and an annual ranking may be created for each category of music.
[0050]
Furthermore, in the present embodiment, music data and program additional information are stored on the hard disk, but data other than these data may be recorded on the hard disk. For example, a satellite digital radio program may be recorded as described in the present embodiment by using an empty area of a hard disk that stores map data in an in-vehicle navigation device.
[0051]
Furthermore, in this embodiment, the music data is recorded on the hard disk. However, the data recording apparatus is not limited to the hard disk, and a DVD-RAM or other data recording apparatus may be used. .
[0052]
【The invention's effect】
As described above, the audio device of the present invention has a list creation unit that creates a recommended song list based on program additional information and broadcast date and time data in response to an instruction from the control unit. It is possible to know the music that is popular recently, and use it as a judgment material when selecting music.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a satellite digital radio broadcasting system.
FIG. 2 is a diagram illustrating a data configuration of satellite digital radio broadcasting.
FIG. 3 is a block diagram showing a configuration of an audio apparatus according to the embodiment of the present invention.
FIG. 4 is a flowchart showing an operation when a weekly ranking is created as a playlist.
FIG. 5 is a flowchart showing an operation when an annual ranking (second recommended song list) is created as a play list;
FIG. 6 is a diagram illustrating an example of a screen displayed on the display unit when a song recorded on the hard disk is selected.
FIG. 7 is a diagram illustrating an example in which a weekly ranking playlist is displayed on the display unit;
[Explanation of symbols]
10 ... Broadcasting master station,
11 ... broadcast satellite,
12 ... Ground repeater,
13. Digital radio receiver,
21 ... receiving part,
22 ... Audio signal switching unit,
23 ... Decoder,
24. List creation part,
25. Hard disk controller,
26: Hard disk,
27 ... System controller,
28 ... operation unit,
29: Display section.

Claims (4)

A receiver that receives a digital radio broadcast in which broadcasts of a plurality of channels are multiplexed and outputs music data and program additional information of the music broadcast on the digital radio broadcast ;
A data recording unit for recording music data and program additional information of the music output from the receiving unit together with broadcast date and time data;
A list creation unit that creates a recommended music list under set conditions based on the program additional information and the broadcast date and time data recorded in the data recording unit;
A decoder for converting music data read from the data recording unit into an analog audio signal;
Have a control unit that controls the reception unit and the list creation unit in response to a user operation,
When recording the music data of the music output from the receiving unit, if the data recording unit has already recorded the music data of the music, the data recording unit receives the music data of the music already recorded. An audio apparatus characterized by adding only broadcast date and time data to the music data of the music output from the section .   The control unit instructs the list creation unit to create the recommended song list at a fixed period, and the list creation unit checks the number of broadcasts for each song recorded in the data recording unit, and the number of broadcasts is large. The audio apparatus according to claim 1, wherein a recommended music list in which music names are arranged in order is created.   The data recording unit stores the recommended song list created by the list creating unit over a plurality of cycles, and the list creating unit is configured to store each of the recommended song lists stored in the data recording unit based on the plurality of recommended song lists. 3. The audio device according to claim 2, wherein the second recommended music list in which music names are arranged in the descending order of the number of broadcasts by counting the number of broadcasts of the music is created.   The audio apparatus according to claim 1, wherein the data recording unit simultaneously records music data and program additional information of two or more channels output from the receiving unit.

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