JP2016213624A - Radio receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio receiver capable of preventing the missing or duplication of the program content, when receiving a program of radio wave broadcast requiring immediacy, while receiving Internet radio broadcast.SOLUTION: A radio receiver 1 includes a FM radio tuner 20 for receiving radio wave broadcast by using a predetermined broadcast wave and outputting its broadcast content, a communication unit 70 for receiving the Internet radio broadcast distributed using the Internet protocol, and outputting the same broadcast content as the radio wave broadcast later than the output timing of the FM radio tuner 20, an Internet radio broadcast processing unit 12, and an output switching unit 16 for switching an output object to traffic information when the traffic information of radio wave broadcast is received during output of a program of Internet radio broadcast, and continuing the output from the interruption part of a program of the Internet radio broadcast, after ending output of the traffic information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a radio receiver that receives both radio broadcasts and Internet radio broadcasts.

  2. Description of the Related Art Conventionally, a broadcast receiver that can receive both radio broadcasts and Internet radio broadcasts having the same content as the radio broadcasts is known (see, for example, Patent Document 1). This broadcast receiver can receive both radio broadcasts and Internet radio broadcasts at the same time when the radio wave condition is good. However, generally, better reception quality can be obtained more stably with Internet radio broadcasts. In an environment where both broadcasts can be received simultaneously, Internet radio broadcasts tend to be received preferentially.

JP 2010-233113 A

  By the way, in the broadcast receiver disclosed in Patent Document 1, when receiving an Internet radio broadcast with good reception quality, it is necessary to temporarily store the received audio information in a memory. A predetermined time delay occurs until output. On the other hand, for broadcast content that requires immediacy, such as traffic information, it is necessary to switch to radio broadcast even when Internet radio broadcast is being received, but when switching such broadcast content, Since some of the contents of Internet radio broadcasting are replaced with traffic information etc., this replaced content will be lost and you will not be able to hear it, and after switching to Internet radio broadcasting, traffic information etc. with the same contents will be output, There was a problem that duplication of broadcast contents occurred.

  The present invention was created in view of the above points, and its purpose is to lack or duplicate program contents when receiving radio broadcast programs that require immediacy while receiving Internet radio broadcasts. It is an object of the present invention to provide a radio receiver that can prevent the above.

  In order to solve the above-described problem, a radio receiver according to the present invention uses a first receiving means for receiving a radio broadcast distributed using a predetermined broadcast wave and outputting the broadcast content, and an Internet protocol. The second receiving means for receiving the Internet radio broadcast distributed and outputting the same broadcast content as the radio broadcast later than the output timing of the first receiving means, and the Internet received by the second receiving means While outputting the first program of the radio broadcast, when the second program of the radio broadcast that requires immediacy is received by the first receiving means, the output target is switched to the second program, After the end of the second program, there is provided output switching means for continuing output from the interrupted portion of the first program of the Internet radio broadcast whose output has been interrupted.

  When a radio broadcast program that requires immediacy is received, the Internet radio broadcast program output that was being listened to is interrupted, and after this radio broadcast program is output, the interrupted Internet radio broadcast program output is output. Can be resumed from where it was interrupted, so that radio broadcast programs that require immediateness can be output without delay, and the content of Internet radio broadcast programs whose output has been interrupted can be prevented from being lost. .

  Further, the output switching means described above, when the output timing of a program having the same content as the second program included in the Internet radio broadcast comes after continuing the output of the first program of the Internet radio broadcast from the interrupted point In addition, it is desirable to stop the output of the program having the same contents and continue the output of the first program. Thereby, after listening to the second program that requires immediacy, it is possible to prevent the program having the same content from being listened to twice.

  The radio broadcast described above includes a specific program identification signal corresponding to the reception timing of the second program, and the output switching means switches between the first and second programs based on the specific program identification signal. It is desirable to do. Thereby, the reception timing of the second program requiring immediacy can be surely known.

  Moreover, it is desirable that the second program described above includes a program that includes traffic information or emergency earthquake warnings. When traffic information and earthquake early warnings are delivered, it is possible to receive them without delay and listen to the contents, and to duplicate the contents in these listening and other broadcasts that have been listened to so far Can be prevented from being lost.

  In addition, it is desirable to further include notification means for notifying that when the output of a program having the same content as the second program included in the Internet radio broadcast is stopped. This makes it possible to notify the user that the part corresponding to the second program that has been forcibly listened to earlier has been skipped when receiving an Internet radio broadcast, and the uncomfortable feeling when the connection between the program contents becomes unnatural. Can be reduced.

It is a figure which shows the structure of the radio receiver of one Embodiment. It is explanatory drawing of the basic baseband coding structure of RDS data. It is a figure which shows the relationship between the program output timing of radio wave broadcasting and internet radio broadcasting, and the output content of the radio receiver. It is a flowchart which shows the operation | movement procedure which switches a program with traffic information reception.

  Hereinafter, a radio receiver according to an embodiment to which the present invention is applied will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of a radio receiver according to an embodiment. The radio receiver 1 of this embodiment is connected to a server 2 via a predetermined network 3.

  The network 3 is, for example, the Internet, and is connected to a mobile phone or a mobile terminal device connected to the radio receiver 1 and a base station (both not shown), or connected to the radio receiver 1 (or It is conceivable to connect via a built-in wireless LAN communication device and an access point (both not shown). In addition, when a wireless LAN connection is possible, a wireless LAN connection is performed. When a wireless LAN connection is impossible (such as when there is no access point nearby), a connection using a mobile phone or the like is performed. May be.

  The server 2 distributes Internet radio broadcasts to the radio receiver 1 via the network 3. In this specification, a radio broadcast distributed using the Internet protocol is referred to as an “Internet radio broadcast”. The server 2 distributes each program information provided from a plurality of broadcasting stations providing radio broadcasts to each radio receiver 1 using the Internet protocol. Further, a server 2 may be provided for each broadcasting station, and program information may be distributed from the server 2 of each broadcasting station to each radio receiver 1.

  The radio receiver 1 includes a control unit 10, an FM radio tuner 20, a memory 30, an operation unit 40, an input processing unit 42, an audio processing unit 50, an amplifier 52, a speaker 54, a display processing unit 60, a display device 62, and a communication unit 70. It has.

  The control unit 10 executes a predetermined operation program using a CPU, a ROM, a RAM, and the like, and is distributed from the server 2 with the same broadcast content as the radio broadcast transmitted from the broadcast station or the same broadcast program. The overall operation of the radio receiver 1 is controlled in order to receive Internet radio broadcasts and output program contents. Details of the control unit 10 will be described later.

  The FM radio tuner 20 is for receiving FM broadcast signals and RDS broadcast signals as analog broadcasts received via the antenna 22. For example, the FM tuner 20 includes a front end (F / E) 24, a demodulator 26, and an RDS decoder 28.

  In RDS broadcasting, 57 kHz, which is the third harmonic of the 19 kHz stereo pilot signal, is used as a subcarrier, and the subcarrier is amplified by a data signal indicating data related to program-related information or traffic information that is filtered and two-phase coded. Radio data (RDS data) is modulated and the amplitude-modulated subcarrier is frequency-modulated to the main carrier and broadcast.

  FIG. 2 is an explanatory diagram of a basic baseband coding structure of RDS data. As shown in FIG. 2, the RDS data is composed of groups of 104 bits as one group, and each group is composed of 4 blocks (A, B, C, D), and each block is a 16-bit information word. (M0 to m15) and 10-bit check words and offset words (C′0 to C′9).

  In block A, a program identification code (PI code) indicating a network composed of country name data and program data is arranged. In block B, a traffic information broadcasting station identification code (TP code: Traffic program Identification code) indicating a traffic information broadcasting station that broadcasts a traffic information program, and a broadcast program related to this traffic information are being broadcast. A traffic announcement identification code (TA code: Traffic Announcement code) indicating this is arranged. In block C, data relating to the frequency of each station of the network station group that broadcasts the same program, that is, alternative station frequency code (AF data: Alternative Frequency code) is arranged. In block D, a broadcasting station name code (PS data: Program Service code) such as a broadcasting station name or a network name is arranged.

  The front end 24 extracts a desired broadcast signal from broadcast signals received via the antenna 22 and performs frequency conversion to generate an intermediate frequency signal corresponding to the broadcast wave. The demodulator 26 performs FM demodulation processing and stereo demodulation processing based on the input intermediate frequency signal. RDS data including predetermined message data is superimposed on the data after FM demodulation. The message data includes the following contents.

(1) Program identification code (PI)
(2) Traffic information broadcasting station identification code (TP code)
(3) Traffic announcement identification code (TA code)
The audio data that has been stereo demodulated by the demodulator 26 is input to the audio processor 50.

  The RDS decoder 28 performs a predetermined decoding process on the data demodulated by the demodulator 26 to restore the RDS data. The RDS decoder 28 detects an error in the RDS data while maintaining block synchronization, and performs an operation for correcting the error. Normally, RDS data error detection and correction operations are separate from the RDS data decoding process, and a separate error detection / correction unit is provided.

  The memory 30 is used as a work area for various processes necessary for receiving Internet radio broadcast and outputting audio data of each program, and at the time of receiving traffic information by radio broadcast, audio data of each program of the Internet radio broadcast It is used as a temporary storage area that delays.

  The operation unit 40 is for receiving various operations by the user, and includes various switches and operation knobs. The input processing unit 24 monitors the operation state of the operation unit 40 and detects the content input by the user.

  The audio processing unit 50 receives data after demodulated radio broadcast output from the demodulation unit 26 in the FM radio tuner 20 and data of Internet radio broadcast output from the control unit 10 and selects one of them. The audio signal is output by performing audio decoding processing for each data format. This audio signal is amplified by the amplifier 52 and output from the speaker 54.

  The display processing unit 60 is for displaying various operation screens under the control of the control unit 10 and outputs video signals corresponding to the display contents. This video signal is input to the display device 62 and video display is performed. The communication unit 70 is for transmitting and receiving various data related to Internet radio broadcasting to and from the server 2 via the network 3, and performs predetermined processing according to the communication method.

  Next, the control unit 10 will be described. As shown in FIG. 1, the control unit 10 includes an Internet radio broadcast processing unit 12, an FM radio tuner processing unit 14, an output switching processing unit 16, and a notification processing unit 18.

  The internet radio broadcast processing unit 12 performs a process of receiving and playing the internet radio broadcast distributed from the server 2. Since various processes performed from the reception of the Internet radio broadcast to the start of reproduction take a certain amount of time, the time difference (delay is about 2 to 3 minutes compared to the case where the output of the program content is started by receiving the radio broadcast. ) Occurs. The FM radio tuner processing unit 14 performs processing such as channel selection necessary for reception of radio broadcast using the FM radio tuner 20.

  The output switching processing unit 16 performs processing for switching the broadcast (radio wave broadcast / Internet radio broadcast) to be output by the audio processing unit 50. Specifically, the output switching processing unit 16 receives the same program of radio broadcast and Internet radio broadcast, and outputs a radio broadcast program (for example, traffic information) that requires immediacy while outputting the Internet radio broadcast program. ) Is received, the output target is switched to the traffic information, and after the distribution of the traffic information is completed, the output is continued from the interrupted portion of the Internet radio broadcast program where the output is interrupted. Further, the output switching processing unit 16 resumes the output of the traffic information when the output timing of the traffic information that has been output has arrived after restarting the output of the program before the interruption from the above-mentioned interruption point of the Internet radio broadcast. Then, the output of the next program of the traffic information is continued. The notification processing unit 18 notifies that when the output of traffic information included in the Internet radio broadcast is stopped. This notification is performed, for example, by displaying a predetermined notification screen on the display processing 62 or outputting a predetermined notification sound from the speaker 54.

  The FM radio tuner 20 described above is the first receiving means, the communication section 70, the Internet radio broadcast processing section 12 is the second receiving means, the output switching processing section 16 is the output switching means, and the notification processing section 18 is the notification means. Correspond to each. Further, a traffic information broadcasting station identification code (TP code) included in the message data of RDS data corresponds to the specific program identification signal.

  The radio receiver 1 according to the present embodiment has such a configuration. Next, an operation in the case of receiving and switching to radio wave traffic information while receiving an Internet radio broadcast program will be described.

  FIG. 3 is a flowchart showing an operation procedure for switching programs according to traffic information reception. For example, in parallel with the operation of receiving a radio broadcast program, while receiving an Internet radio broadcast program having the same content and outputting the program content, traffic information is distributed by radio broadcast and the output target is switched. The operating procedure in case is shown.

  When the same program is received by the radio broadcast and the Internet radio broadcast, the output switching processing unit 16 selects an Internet radio broadcast with generally good reception quality and outputs the received program content from the speaker 54 (step 100). The output switching processing unit 16 determines whether or not reception of radio broadcast traffic information is started in parallel with such an Internet radio broadcast program output operation (step 102). This determination is performed by examining the presence or absence of the TA code (traffic announcement identification code) in the message data of the RDS data output from the RDS decoder 28. If the TA code is not included, a negative determination is made, and the process returns to step 100 to repeat the program output operation of the Internet radio broadcast.

  If the TA code is included in the message data of the RDS data, an affirmative determination is made in the determination in step 102. Next, the output switching processing unit 16 stops the program output of the Internet radio broadcast (Step 104), and outputs the traffic information of the radio broadcast (Step 106). Further, the output switching processing unit 16 determines whether or not reception of traffic information has been completed (step 108). If traffic information is being received, a negative determination is made, and the process returns to step 106 to continue outputting traffic information. Further, when the reception of traffic information is completed, an affirmative determination is made in the determination of step 108.

  Next, the output switching processing unit 16 resumes the program output of the Internet radio broadcast from the interrupted point at the start of the traffic information output (step 110). Further, the output switching processing unit 16 determines whether or not the traffic information output of the Internet radio broadcast has been started (step 112). For example, Internet radio broadcast program output is delayed by a predetermined time from radio broadcast program output, and therefore, the delay time has elapsed since the start of radio broadcast traffic information output in step 106. It is conceivable that the time point is the time point when the traffic information output of the Internet radio broadcast is started. Alternatively, when the waveform of the top part of the radio broadcast traffic information is sampled and the waveform of the same shape is included in the Internet radio broadcast program output waveform, the traffic information output of the Internet radio broadcast is started You may make it. Until the traffic information output of the Internet radio broadcast is started, a negative determination is made in the determination of step 112, and this determination is repeated.

  When the output of traffic information for Internet radio broadcasting is started, an affirmative determination is made in the determination at step 112. Next, the output switching processing unit 116 skips the output of traffic information for Internet radio broadcasting (step 114). For example, the output time of radio broadcast traffic information can be known by measuring the time when the TA code is included in the message data of RDS data. Therefore, by skipping the Internet radio broadcast program output by this time, traffic Information output can be skipped. In addition, the notification processing unit 18 notifies that the output of traffic information included in the Internet radio broadcast has been stopped (skip) (step 116). Thereafter, the process returns to step 102, and the operation after the determination is repeated as to whether or not reception of radio wave traffic information is started.

  FIG. 4 is a diagram showing the relationship between the program output timing of radio wave broadcasting and Internet radio broadcasting and the output contents of the radio receiver 1. As shown in FIG. 4, in each of the radio wave broadcast and the Internet radio broadcast, the program contents can be output in the order of 1, 2, 3,... Occur.

  In the radio receiver 1 of the present embodiment, when the same program is received by both radio broadcast and Internet radio broadcast, the program content of the Internet radio broadcast is output (see “Internet radio broadcast” in FIG. 4). ).

  However, when traffic information (program 5 in the example shown in FIG. 4) is distributed by radio broadcast, the output content of the radio receiver 1 is changed from the Internet radio broadcast program to the radio broadcast traffic information in accordance with the output timing. Switch to (Program 5). This switching state continues until distribution of traffic information is completed. When the distribution of traffic information by radio wave broadcasting is completed, program output is resumed from the point where Internet radio broadcasting is interrupted.

  Further, when the output timing of traffic information (program 5) arrives thereafter in the program output of Internet radio broadcast, the output of this traffic information is skipped (skip), and the content of program 6 is output next to program 4.

  As described above, in the radio receiver 1 of the present embodiment, when radio traffic traffic information that requires immediacy is received, the program output of the Internet radio broadcast that has been listened to is interrupted, and the radio broadcast is received. After the program is output, the interrupted Internet radio broadcast program output can be resumed from where it was interrupted, so radio broadcast programs that require immediacy can be output without delay and the output is interrupted. In addition, it is possible to prevent the lack of program contents of Internet radio broadcasting.

  In addition, when the output timing of traffic information included in Internet radio broadcasting arrives late, this traffic information output is skipped and skipped, thereby preventing duplicate traffic information from being heard. Can do.

  The message data of the RDS data corresponding to the radio broadcast traffic information includes a traffic announcement identification code (TA code), and the output switching processing unit 16 switches the traffic information based on the TA code. Yes. Thereby, the reception timing of traffic information can be known reliably.

  In addition, when the traffic information included in the Internet radio broadcast is skipped, the notification processing unit 18 notifies that fact, thereby reducing a sense of discomfort when the connection between the program contents becomes unnatural.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, the description has been given using the traffic information as an example of the radio broadcast program that requires immediacy, but the present invention can be applied to other than the traffic information. For example, “emergency earthquake warning” may be included in a radio broadcast program that requires immediacy.

  In the above-described embodiment, the RDS tuner (FM radio tuner 20) is used as a configuration for receiving the radio broadcast. However, other tuners capable of receiving at least one of the AM broadcast and the FM broadcast may be used. .

  As described above, according to the present invention, when a radio broadcast program that requires immediacy is received, the Internet radio broadcast program output that has been listened to is interrupted and the radio broadcast program is output. After that, the program output of the interrupted Internet radio broadcast can be resumed from the interrupted location, so that the radio broadcast program that requires immediacy can be output without delay, and the output of the Internet radio broadcast whose output has been interrupted Can be prevented from being lost.

DESCRIPTION OF SYMBOLS 1 Radio receiver 2 Server 3 Network 10 Control part 12 Internet radio broadcast process part 14 FM radio tuner process part 16 Output switching process part 18 Notification process part 20 FM radio tuner 30 Memory 40 Operation part 42 Input process part 50 Audio process part 62 Display device 70 Communication unit

Claims (6)

First receiving means for receiving a radio broadcast distributed using a predetermined broadcast wave and outputting the broadcast content;
Second receiving means for receiving an Internet radio broadcast distributed using an Internet protocol, and outputting the same broadcast content as the radio wave broadcast later than an output timing of the first receiving means;
While outputting the first program of the Internet radio broadcast received by the second receiving means, when the second program of the radio broadcast requiring immediacy is received by the first receiving means, An output switching means for switching the output target to the second program and continuing the output from the interrupted portion of the first program of the Internet radio broadcast whose output is interrupted after the end of the second program;
A radio receiver comprising: In claim 1,
The output switching means continues output of the first program of the Internet radio broadcast from the interrupted location, and then the output timing of a program having the same content as the second program included in the Internet radio broadcast has arrived In addition, the output of the program having the same content is stopped, and the output of the first program is further continued. In claim 1 or 2,
The radio broadcast includes a specific program identification signal corresponding to the reception timing of the second program,
The radio receiver characterized in that the output switching means switches between the first and second programs based on the specific program identification signal. In any one of Claims 1-3,
The radio receiver according to claim 2, wherein the second program includes a program including traffic information. In any one of Claims 1-4,
The radio receiver according to claim 2, wherein the second program includes a program that includes an emergency earthquake warning. In claim 2,
A radio receiver characterized by further comprising notification means for notifying that when the output of a program having the same contents as the second program included in the Internet radio broadcast is stopped.

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