JP2013090307A - Receiving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiving device which, when another program different from a desired one is received in the same frequency, helps to prevent inconveniences such as a sudden change of programs or the inability to listen to a broadcast for a long time.SOLUTION: A radio receiver of the present invention can receive a broadcast signal which has had data multiplexed therein. When receiving a desired program of a desired broadcast station, the radio receiver determines whether any other program different from the desired program has been received from some other broadcast station. If any other program is determined to have been received, the radio receiver compares already acquired genre identification information on the desired program (original PTY) with genre identification information on the other program (new PTY). If two of the genre identification information compare equal, the radio receiver executes a follow-up operation for program identification information on the other program (new PI); if two of the genre identification information compare unequal, it executes a follow-up operation for program identification information on the desired program (original PI).

Description

  The present invention relates to a receiving apparatus, and more particularly to a radio broadcasting receiving apparatus capable of receiving a broadcast signal in which data is multiplexed.

  A mobile device such as a vehicle is equipped with a receiving device that receives a television broadcast or a radio broadcast. In a vehicle-mounted receiving device, when a receiving channel that has been received so far has moved out of the broadcasting area due to movement of the vehicle, automatic switching (following operation) to another channel that is broadcasting the same program is performed. Has been done. For example, in Patent Document 1, when the broadcast program is out of the broadcast service area, the time table of the program in the next broadcast service area is referred to, and when the same program is broadcast on another channel, the other channel is referred to. When the same program is not broadcast, the program is automatically switched to the channel of the program having the same genre.

  Also, in a radio receiver that receives RDS (Radio Data System) broadcasts, an alternative broadcast station is searched for in the background or at a constant cycle based on the superimposed program identification information, and the reception sensitivity decreases, the alternative broadcast station Automatic switching to Patent Document 2 discloses a technique for preventing a program having the same content from being set repeatedly for one preset button in such an RDS radio receiving apparatus.

JP 2000-299644 A JP 2009-202021 A

  In RDS broadcasting, additional information such as information identifying a program (PI: Program Identification), information identifying a program genre (PTY: Program Type), and information identifying a country code is superimposed on a radio broadcast signal. Yes. In such a radio receiver capable of receiving RDS broadcasts, for example, when driving and moving while listening to FM broadcasts, even if the vehicle frequency is the same, A program broadcast of a broadcasting station may be received. That is, when the reception area of a certain broadcast station overlaps with the reception area of another broadcast station, the program of each broadcast station can be received while traveling in such an overlapping area. In particular, when traveling on continents such as Europe, such a situation occurs near the border.

When a different program from another broadcasting station is received at the same frequency, that is, when program interference occurs, program identification information (new PI) different from the originally acquired program identification information (original PI) is acquired. Is done. In such a case, there are the following two methods as operations in the radio receiver.
1. Leave it as it is, make the new program identification information (new PI) valid, and check the existence of an alternative broadcasting station that broadcasts the same program (AF Check) or replace the new program identification information (new PI) Follow-up operations such as automatic switching to broadcasting stations (Switch).
2. Only the original program identification information (original PI), which is the broadcast that the user wanted to listen to, is valid,
Follow the original program identification information (original PI) to check whether there is an alternative broadcast station that broadcasts the same program or to automatically switch to the alternative broadcast station in order to continue the original program identification information (original PI) To implement. Then, the new program identification information (new PI) is validated when the frequency is changed to another frequency due to a seek from the user or when a preset call is made.

  However, in the case of the first method, there is a problem that, by automatically switching to the new program identification information (new PI), the program is switched to a completely different program that is desired by the user and is continued. . In the case of the second method, when an alternative broadcast station corresponding to the original program identification information (original PI) is searched but no alternative broadcast station with good reception sensitivity is found, search for an alternative broadcast station is performed. And the search is continued until a user operation is performed. During this time, the new program broadcast will be performed as well as the voice, but the follow-up operation will be performed for the original program identification information (original PI), so that the new program broadcast should be supported even if the reception sensitivity of the new program broadcast deteriorates. I can't.

  The present invention solves the above-described conventional problems. When another program different from the desired program is received at the same frequency, the program cannot be changed suddenly or cannot be listened to for a long time. A radio receiver that does not cause such disadvantages is provided.

  The receiving apparatus according to the present invention is capable of receiving a broadcast signal in which data is multiplexed, and when receiving a desired program of a desired broadcast station, another program different from the desired program is transmitted to another broadcast station. Determining means for determining whether or not the program has been received, acquisition means for acquiring program identification information and genre identification information of the program received from the data multiplexed in the broadcast signal, and other programs by the determination means When it is determined that the genre identification information of the desired program acquired by the acquisition unit and the genre identification information of the other program are compared, the genre identification information is the same by the comparison unit. In some cases, reception of the alternative broadcast station is controlled based on the program identification information of the other program. When the genre identification information is not the same, the reception of the alternative broadcast station is based on the program identification information of the desired program. Receiving device and a control means for controlling.

  Preferably, the acquisition means further acquires country identification information of the program received from the multiplexed data, and the comparison means further includes the country identification information of the desired program acquired from the acquisition means and the other information. And when the genre identification information is the same and the country identification information is the same, the control means further determines the alternative broadcast station based on the program identification information of the other program. Control reception. Preferably, the determination means determines that the other program has been received when the program identification information of the desired program acquired by the acquisition means is different from the program identification information of the other program.

  Furthermore, the receiving device of the present invention is a receiving device capable of receiving a broadcast signal in which data is multiplexed. When receiving a desired program of a desired broadcast station, another program different from the desired program Determination means for determining whether or not the program has been received from a broadcasting station, acquisition means for acquiring program identification information of a program received from data multiplexed on the broadcast signal, and reception of other programs by the determination means If it is determined that the alternative broadcast station is searched under a certain condition based on the program identification information of the desired program, and the alternative broadcast station is not found, the alternative broadcast station is determined based on the program identification information of the other program. Control means for controlling the reception of.

  Furthermore, the receiving device of the present invention is a receiving device capable of receiving a broadcast signal in which data is multiplexed. When receiving a desired program of a desired broadcast station, another program different from the desired program Determination means for determining whether or not the program has been received from a broadcasting station, acquisition means for acquiring program identification information of a program received from data multiplexed on the broadcast signal, and reception of other programs by the determination means When it is determined that the timer time is displayed, and if there is an instruction to cancel within the timer time, the reception of the alternative broadcast station is controlled based on the program identification information of the desired program, And a control means for controlling reception of the alternative broadcast station based on the program identification information of the other program when there is no cancellation instruction from the user within the timer time.

  Further, the reception control program according to the present invention is executed by a receiving device capable of receiving a broadcast signal in which data is multiplexed, and is different from the desired program when receiving a desired program of a desired broadcast station. Determining whether or not another program has been received from another broadcast station, and when it is determined that another program has been received, the genre identification information of the desired program already acquired and the genre of the other program When the genre identification information is the same as the step of comparing the identification information, the reception of the alternative broadcast station is controlled based on the program identification information of the other program, and when the genre identification information is not the same, the program of the desired program Controlling the reception of the alternative broadcast station based on the identification information.

  According to the present invention, when another program different from the desired program is received at the same frequency, if the desired program and the genre of the other program do not match, the alternative broadcast station receives the program based on the program identification information of the desired program. Because it is controlled, the user is prevented from suddenly changing to a program whose content is significantly different from the desired program, and at the same time, the disadvantage that the user cannot listen to the program for a long time is eliminated. The Further, according to another invention, even if another program different from the desired program is received, it is reconfirmed after that whether or not the desired program can be received under a certain condition. Can be received again, it is possible to continue receiving programs that match the user's wishes. According to still another invention, when another program different from the desired program is received, the timer time is displayed, and the reception of the desired program or another program is selected according to whether there is an instruction from the user during that time. Therefore, the user does not feel uncomfortable that the program is suddenly changed to another program.

It is a block diagram which shows the structure of the radio receiver which concerns on the Example of this invention. It is a flow explaining the follow operation | movement of the radio receiver which concerns on the Example of this invention. It is an operation | movement flow when the competition with the program of another broadcasting station arises with the same frequency. It is a figure which shows the operation | movement flow when a program competes in the radio receiver which concerns on 1st Example of this invention. It is a figure which shows the operation | movement flow when a program competes in the radio receiver which concerns on 2nd Example of this invention. It is a figure which shows the operation | movement flow when a program competes in the radio receiver which concerns on the 3rd Example of this invention. It is a figure which shows the operation | movement flow when a program competes in the radio receiver which concerns on the 4th Example of this invention. It is an example of a display of the radio receiver concerning the 4th example of the present invention.

  Next, embodiments of the present invention will be described with reference to the drawings. A preferred embodiment of the present invention exemplifies a radio receiving device mounted on an automobile as a moving body. In addition, the radio reception apparatus can receive a radio broadcast signal in which data is multiplexed. Here, as an example, it is assumed that the radio reception apparatus receives an RDS broadcast.

  FIG. 1 is a block diagram showing a configuration of an in-vehicle radio receiving apparatus according to an embodiment of the present invention. The radio reception apparatus 10 receives an antenna 12, a tuner 14 that receives a broadcast signal of a selected broadcasting station (frequency) via the antenna 12, and a reception signal from the tuner 14, and executes various processes based on the reception signal. A control unit 18 that controls the signal processing unit 16, the tuner 14, the signal processing unit 16, and the like; an amplifier 20 that amplifies the audio signal processed by the signal processing unit 16; a speaker 22 that outputs the audio signal amplified by the amplifier 20; It has a display unit 24 that can display data decoded by the signal processing unit 16, an input unit 26 that receives input from the user, and a storage unit 28 that stores RDS data superimposed on the broadcast signal.

  As is known, the tuner 14 receives an RF signal from the antenna 12, an RF amplifier that amplifies the RF signal, a tuning circuit that selects a frequency signal of a desired station from the amplified RF signal, a frequency signal from the local oscillator and the RF It includes a mixer that mixes signals to generate an intermediate frequency (IF) signal, and an S meter circuit that DC-detects the intermediate frequency signal and extracts a received electric field strength signal (S meter signal). Further, the tuner 14 converts the intermediate frequency signal (IF) and the S meter signal into digital signals by an ADC (analog / digital converter), and outputs them to the signal processing unit 16.

  The signal processing unit 16 is configured using, for example, a DSP (Digital Signal Processor), and the signal processing unit 16 performs various processes on the digital signal input from the tuner 14. The signal processing unit 16 performs signal processing such as FFT, digital filtering, signal synchronization, time / frequency deinterleaving, audio decoding, data decoding, and phase diversity. These signal processes can be controlled by software stored in a program memory in the signal processing unit 16.

  The control unit 18 is connected to the signal processing unit 16 via a control bus, and controls operations of the signal processing unit 16 and the tuner 14 based on a signal obtained from the signal processing unit 16. Preferably, the control unit 18 includes a microcontroller and controls each unit by executing a program stored in the memory. More preferably, the control unit 18 broadcasts the same program as the received program based on the program identification information included in the acquired RDS data when the vehicle receives the RDS broadcast while moving. The program which checks the presence or absence of the alternative broadcast station currently in use and controls the follow operation for automatically switching to the alternative broadcast station according to the reception sensitivity of the current broadcast station is executed.

  Next, a follow operation when the radio receiving apparatus of this embodiment is receiving an RDS broadcast will be described with reference to the flow of FIG. A broadcast signal of a desired broadcast station selected by the user is received by the tuner 14 (S101), and the received broadcast signal is output to the signal processing unit 16. The signal processing unit 16 decodes the input digital signal, and acquires a digital audio signal and RDS data therefrom. The digital audio signal is output to the amplifier 20, where it is converted to an analog audio signal, amplified, and then output from the speaker 22. On the other hand, the RDS data is provided to the control unit 18, and the control unit 18 performs reception control using the RDS data, and stores the acquired RDS data in the storage unit 28 (S102). The RDS data includes program identification information (PI) for identifying a program, genre identification information (PTY) for identifying the genre of the program, country identification information for identifying the country code of the program, and the like. In addition, the control unit 18 can cause the display unit 24 to display information included in the RDS data, for example, the currently received broadcast station and the program genre.

  While receiving the desired broadcast station, the control unit 18 searches for an alternative broadcast station that is broadcasting the same program as the currently received program based on the program identification information (PI) included in the RDS data ( S103). This search is performed, for example, at a constant cycle, and the audio output from the speaker 22 is muted while the search is being performed. However, this search period is very short, and the user cannot feel discomfort such as sound interruption. The frequency of the alternative broadcast station searched by the control unit 18 and the reception sensitivity (S meter) of the alternative broadcast station are stored in the storage unit 28. The alternative broadcast station and its reception sensitivity are updated to the latest each time a search for an alternative broadcast station is performed.

  The control unit 18 monitors the reception sensitivity of the desired broadcast station currently being received, and determines whether or not the reception sensitivity is good (S104). This determination is made based on, for example, whether or not the S meter, which is the electric field intensity from the tuner 14, is greater than or equal to a threshold value. The threshold value is, for example, 60 dB for standard input. If it is determined that the reception sensitivity is good, the current broadcast station reception is continued (S105). On the other hand, if it is determined that the reception sensitivity is not good, the information stored in the memory 28 is referred to check whether there is an alternative broadcast station with good reception sensitivity (S106), and such an alternative broadcast station Is found, it is switched to the alternative broadcasting station (S107). If such an alternative broadcast station does not exist, reception of the current broadcast station is continued as it is (S105).

  In the above-mentioned follow operation, when the reception sensitivity of the currently receiving broadcast station deteriorates, the presence of an alternative broadcast station is checked. However, the present invention is not limited to this. When an alternative broadcast station having a reception sensitivity better than the sensitivity is found, switching to the alternative broadcast station may be performed. 1 has one tuner, it may have a main tuner and a sub-tuner. In this case, typically, the sub tuner searches for alternative broadcast stations of the broadcast station received by the main tuner in the background, generates a list of alternative broadcast stations, and the list of the alternative broadcast stations is used for the follow operation. You may make it refer.

  The flow shown in FIG. 2 is processing when the broadcast station does not change at the same frequency, that is, when competition or interference with programs of other broadcast stations does not occur. FIG. 3 shows the follow operation when a program of another broadcast station different from the desired program is received at the same frequency. As shown in the figure, the control unit 18 acquires program identification information (PI) included in the RDS data (S201), and compares it with the previous program identification information held in the storage unit 28 ( S202), it is determined whether the program identification information is the same (S203). If the program identification information is the same, it is determined that no competition has occurred, and the follow operation shown in FIG. 2 is performed (S204). On the other hand, if the program identification information is not the same, it is determined that a conflict has occurred, and a follow operation at the time of program conflict according to the present invention (hereinafter referred to as a “competition follow operation”) is performed (S205).

  FIG. 4 is a diagram showing a flow of a competitive follow operation according to the first embodiment of the present invention. When it is determined that the program identification information is different as described above, the control unit 18 acquires new genre identification information (new PTY) included in the RDS data (S301), and this is stored in the storage unit 28. Compared with the original genre identification information (original PTY) (S302), it is determined whether or not the genres of both programs are the same (S303). For example, the program genre includes news, drama, music, variety, and the like. When the genres are the same, the control unit 18 regards that the program change conforms to the user's preference, and performs a follow operation on the new program identification information (new PI) (S304).

  On the other hand, when the program genres are different, the control unit 18 considers that the program change does not match the user's preference, and performs a follow operation on the original program identification information (original PI) (S305). If the follow operation for the original program identification information (original PI) is continued, a situation may occur in which no alternative broadcast station is found. For this reason, if an alternative broadcasting station of the original PI is not found after a certain period or a certain number of seeks, the follow-up operation of the new PI may be performed. This is equivalent to moving to a third embodiment to be described later.

  As described above, according to the first embodiment, the follow operation for the new program identification information (new PI) is performed only when the program genres are the same. The discomfort caused by the change can be eliminated.

  FIG. 5 is a diagram showing a flow of a competitive follow operation according to the second embodiment of the present invention. In the second embodiment, the control unit 18 acquires new genre identification information (new PTY) and country identification information included in the RSD data (S401), and uses these to acquire the original genre identification information (original PTY) and the original identification information. The country identification information is compared (S402). When the program genre is the same (S403) and the country identification information is the same (S404), a follow operation for the new program identification information (new PI) is performed (S405). On the other hand, if the genre is different or the country identification information is different, a follow operation is performed on the original program identification information (original PI) (S406).

  If your vehicle is traveling near the border, programs with different nationalities or languages may compete, and suddenly the program you are receiving will switch to a broadcast in another country, and follow the broadcast in another country as it is. Operation may be performed. According to the second embodiment, when the nationality of a new program is different, the follow operation is performed on the original program identification information (original PI), so that the user can not receive the broadcast in another country. It is possible to prevent transition.

  FIG. 6 is a diagram showing a flow of a competitive follow operation according to the third embodiment of the present invention. When new program identification information (new PI) different from the original program identification information is acquired (S501), the control unit 18 checks whether or not there is an alternative broadcast station of the original program identification information (original PI) under a certain condition. (S502). The fixed condition can be arbitrarily set. For example, for a certain period from when it is determined that new program identification information (new PI) is acquired, or for finding an alternative broadcasting station from such a point. For example, the number of seeks from the lower limit frequency to the upper limit frequency. As a result of checking under a certain condition, when an alternative broadcast station having an electric field strength equal to or higher than a threshold is found, reception is switched to the alternative broadcast station that is the original program (S504), and then the original program identification information ( A follow operation is performed on the original PI) (S505). On the other hand, when an alternative broadcast station for the original program is not found, a follow operation is performed on the new program identification information (new PI) (S506).

  According to the third embodiment, even if a new program is received at the same frequency, it is possible to immediately follow up the new PI of the new program by reconfirming whether or not the original program can be received. If the original program is receivable and the original program can be received, a follow operation for the original PI is performed, and the user's wish can be met.

  FIG. 7 is a diagram showing a flow of a competitive follow operation according to the fourth embodiment of the present invention. When new program identification information (new PI) different from the original PI is acquired (S601), the control unit 18 causes the display unit 24 to display a timer until the new program identification information (new PI) is validated (S602). ). The timer time is set in advance and can be changed by the user. For example, as shown in FIG. 8, a 60-second timer 30 is displayed on the display unit 24, and this is displayed after being counted down. In addition, a cancel button 32 for canceling the follow operation for the new program identification information is displayed. Furthermore, the genre identification information 34 of the new program is displayed on the display unit 24, and the user can determine whether or not to continue receiving the new program by looking at the genre.

  The control unit 18 monitors whether or not there is a cancel instruction from the user within the timer period regarding the continuation of the reception of the new program (S603). When there is an input of cancellation, the control unit 18 performs a follow operation on the original program identification information (original PI) (S604), that is, substitutes based on the original program identification information (original PI). Broadcast station search and switching are performed. On the other hand, if there is no cancel input, it is considered that the user has accepted the program change, and the control unit 18 performs a follow operation on the new program identification information (new PI) after the timer is over (S605). As described above, according to the fourth embodiment, the follow operation can be performed in accordance with the user's intention.

  The preferred embodiment of the present invention has been described in detail above, but the present invention is not limited to the specific embodiment, and various modifications can be made within the scope of the present invention described in the claims. Deformation / change is possible. In the above embodiment, the radio receiver that receives the RDS broadcast is exemplified. However, as long as the data can be multiplexed, the radio receiver is not limited to the RDS broadcast but may be another radio broadcast.

10: Radio receiver 12: Antenna 14: Tuner 16: Signal processing unit 18: Control unit 20: Amplifier 22: Speaker 24: Display unit 26: Input unit 28: Storage unit 30: Timer display 32: Cancel button 34: Genre display

Claims (6)

A receiving device capable of receiving a broadcast signal in which data is multiplexed,
Determining means for determining whether another program different from the desired program is received from another broadcast station when receiving the desired program of the desired broadcast station;
Obtaining means for obtaining program identification information and genre identification information of a program received from data multiplexed on the broadcast signal;
A comparison unit that compares the genre identification information of the desired program acquired by the acquisition unit with the genre identification information of the other program when the determination unit determines that another program is received;
When the genre identification information is the same by the comparison means, the reception of the alternative broadcasting station is controlled based on the program identification information of the other program, and when the genre identification information is not the same, the substitution is made based on the program identification information of the desired program. Control means for controlling the reception of the broadcasting station;
A receiving apparatus. The acquisition means further acquires country identification information of the program being received from the multiplexed data,
The comparison means further compares the country identification information of the desired program acquired from the acquisition means with the country identification information of the other program,
2. The control unit according to claim 1, wherein when the genre identification information is the same and the country identification information is the same, the control unit controls reception of an alternative broadcast station based on the program identification information of the other program. Receiver device. The determination unit determines that the other program has been received when the program identification information of the desired program acquired by the acquisition unit is different from the program identification information of the other program. The receiving device described. A receiving device capable of receiving a broadcast signal in which data is multiplexed,
Determining means for determining whether another program different from the desired program is received from another broadcast station when receiving the desired program of the desired broadcast station;
Obtaining means for obtaining program identification information of a program received from data multiplexed in the broadcast signal;
When it is determined by the determining means that another program has been received, an alternative broadcast station is searched under a certain condition based on the program identification information of the desired program, and if no alternative broadcast station is found, the other program Control means for controlling the reception of the alternative broadcasting station based on the program identification information of
A receiving apparatus. A receiving device capable of receiving a broadcast signal in which data is multiplexed,
Determining means for determining whether another program different from the desired program is received from another broadcast station when receiving the desired program of the desired broadcast station;
Obtaining means for obtaining program identification information of a program received from data multiplexed in the broadcast signal;
When it is determined by the determination means that another program has been received, a timer time is displayed, and if there is a cancellation instruction from the user within the timer time, it is replaced based on the program identification information of the desired program Control means for controlling the reception of the broadcast station, and when there is no cancellation instruction from the user within the timer time, control means for controlling the reception of the alternative broadcast station based on the program identification information of the other program,
A receiving apparatus. A reception control program executed by a receiving device capable of receiving a broadcast signal in which data is multiplexed,
Determining whether another program different from the desired program is received from another broadcast station when receiving the desired program of the desired broadcast station;
When it is determined that another program has been received, comparing the genre identification information of the desired program already acquired with the genre identification information of the other program;
When the genre identification information is the same, the reception of the alternative broadcast station is controlled based on the program identification information of the other program. When the genre identification information is not the same, the reception of the alternative broadcast station is based on the program identification information of the desired program. A step of controlling
A reception control program.

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