WO2020170387A1 - Broadcast reception device and broadcast reception method - Google Patents

Broadcast reception device and broadcast reception method Download PDF

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Publication number
WO2020170387A1
WO2020170387A1 PCT/JP2019/006540 JP2019006540W WO2020170387A1 WO 2020170387 A1 WO2020170387 A1 WO 2020170387A1 JP 2019006540 W JP2019006540 W JP 2019006540W WO 2020170387 A1 WO2020170387 A1 WO 2020170387A1
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WO
WIPO (PCT)
Prior art keywords
unit
control information
reception
broadcast receiving
optimization processing
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PCT/JP2019/006540
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French (fr)
Japanese (ja)
Inventor
孝典 河合
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2019/006540 priority Critical patent/WO2020170387A1/en
Priority to JP2021501225A priority patent/JP7237140B2/en
Publication of WO2020170387A1 publication Critical patent/WO2020170387A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/47—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for recognising genres
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/68—Systems specially adapted for using specific information, e.g. geographical or meteorological information
    • H04H60/73—Systems specially adapted for using specific information, e.g. geographical or meteorological information using meta-information
    • H04H60/74—Systems specially adapted for using specific information, e.g. geographical or meteorological information using meta-information using programme related information, e.g. title, composer or interpreter

Definitions

  • the present invention relates to a broadcast receiving device and a broadcast receiving method mounted on a vehicle.
  • the broadcasting receiver installed in the vehicle adjusts the reception operation settings according to various environments such as radio environment, vehicle type, and antenna characteristics.
  • the broadcast receiving device described in Patent Document 1 detects identification data indicating a genre of music or the like superimposed on an FM broadcast signal, and uses control information corresponding to the detected identification data for each music genre. The receiving operation was changing.
  • the broadcast receiving device described in Patent Document 1 could not perform the receiving operation according to the music genre when the control information corresponding to the identification data does not exist. Further, the broadcast receiving device described in Patent Document 1 only changes the control information to match the music genre, and does not always update the control information according to changes in the radio environment.
  • the conventional broadcast receiving device has a problem that the control information of the receiving operation for each receiving condition is predetermined and it is not possible to correspond to the receiving condition for which the control information is not fixed. Further, the conventional broadcast receiving device has a problem that the receiving operation cannot be changed at any time according to the change in the receiving condition.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a broadcast receiving device capable of performing a receiving operation according to various receiving conditions.
  • a broadcast receiving apparatus performs a reception operation of a broadcast wave using control information, outputs a reception condition of the broadcast wave and a reception performance result of the reception operation, control information for the reception condition, and a reception performance result.
  • An optimization processing unit that updates the control information by learning the relationship with the above, and a reception operation control unit that sets the control information updated by the optimization processing unit to the reception unit.
  • FIG. 3 is a block diagram showing a configuration example of a broadcast receiving device according to the first embodiment.
  • FIG. 3 is a block diagram showing a configuration example of an analog broadcast receiving section in FIG. 1.
  • 5 is a flowchart showing an operation example of the broadcast receiving device according to the first embodiment.
  • FIG. 4 is a diagram showing an example of various information used in the broadcast receiving device according to the first embodiment.
  • FIG. 7 is a block diagram showing a modified example of the broadcast receiving apparatus according to the first embodiment. 6 is a block diagram showing a configuration example of a digital broadcast receiving section in FIG. 5.
  • FIG. FIG. 7 is a block diagram showing a configuration example of a broadcast receiving device according to a second embodiment.
  • FIG. 6 is a diagram showing an example of various information used in the broadcast receiving device according to the second embodiment.
  • 9 is a flowchart showing an operation example of the broadcast receiving apparatus according to the second embodiment.
  • FIG. 8 is a diagram showing an example of various information used when the broadcast receiving device according to the second embodiment is configured to receive a digital television broadcast wave. It is a figure which shows an example of the hardware constitutions of the broadcast receiving apparatus which concerns on each embodiment. It is a figure which shows another example of the hardware constitutions of the broadcast receiving apparatus which concerns on each embodiment.
  • FIG. 1 is a block diagram showing a configuration example of a broadcast receiving device 10 according to the first embodiment.
  • the broadcast receiving device 10 is mounted on the vehicle 1 and receives an analog broadcast wave.
  • the analog broadcast wave includes at least one of AM radio broadcast wave and FM radio broadcast wave.
  • the broadcast receiving device 10 includes an analog broadcast receiving unit 11, an optimization processing unit 12, and a reception operation control unit 13. Note that, as will be described later, the broadcast receiving device 10 may include the Fourier transform unit 15.
  • FIG. 2 is a block diagram showing a configuration example of the analog broadcast receiving unit 11.
  • the analog broadcast receiving unit 11 includes a tuner unit 111 that receives an analog broadcast wave having an arbitrary frequency, and a demodulation unit 112 that demodulates the analog broadcast wave received by the tuner unit 111.
  • the demodulation unit 112 includes an AD (Analog Digital) conversion unit 113 that converts an analog broadcast wave received by the tuner unit 111 into a digital signal, a noise suppression unit 114 that suppresses noise included in the digital signal, and a digital signal after noise suppression.
  • a reception status detection unit 115 that detects the reception status of the analog broadcast wave using the signal. Although illustration is omitted, the digital signal demodulated by the demodulation unit 112 is output as sound from a speaker installed in the vehicle 1.
  • the reception status detected by the reception status detection unit 115 is reception power, multipath, SN (Signal to Noise ratio), or SINAD (Signal to Noise And Distribution ratio).
  • the reception status detection unit 115 may detect the reception status using a known technique.
  • the reception status detection unit 115 outputs the detected reception status to the optimization processing unit 12.
  • the analog broadcast receiving unit 11 performs an analog broadcast wave receiving operation according to the control information from the receiving operation control unit 13.
  • the control information includes information about at least one of a filter of the tuner unit 111, automatic gain control, high cut control of the demodulation unit 112, volume control, and stereo/monaural ratio control (stereo blend ratio).
  • the high cut control performed by the noise suppression unit 114 is control that reduces high noise by attenuating a high frequency band by the filter when the noise occurs.
  • the control information regarding the high cut control is, for example, a filter coefficient.
  • the optimization processing unit 12 uses the reception status of the analog broadcast wave detected by the reception status detection unit 115 and the control information set in the analog broadcast reception unit 11 via the reception operation control unit 13 to optimize the optimum control information.
  • the control information For example, of the control information, the filter coefficient of the high cut control performed by the noise suppression unit 114 is taken as an example. Further, the reception power included in the reception status is used as the reception condition, and the SN included in the reception status is used as the reception performance result.
  • the optimization processing unit 12 learns the relationship between the control information (that is, the filter coefficient of high-cut control) and the reception performance result (that is, SN) with respect to the reception condition (that is, received power) and the machine learning with teacher data.
  • the optimization processing unit 12 outputs the updated control information to the reception operation control unit 13. It should be noted that the items used for the reception condition and the items used for the reception performance result in the reception situation are predetermined for the optimization processing unit 12.
  • the reception operation control unit 13 sets the control information updated by the optimization processing unit 12 in the analog broadcast reception unit 11.
  • the analog broadcast reception unit 11 performs an operation of receiving an analog broadcast wave using the control information set by the reception operation control unit 13, and outputs the reception status during the reception operation to the optimization processing unit 12.
  • FIG. 3 is a flowchart showing an operation example of the broadcast receiving device 10 according to the first embodiment.
  • the broadcast receiving apparatus 10 starts the operation shown in the flowchart of FIG. 3 when the accessory power supply of the vehicle 1 is turned on, and ends the operation when the accessory power supply is turned off.
  • the reception operation control unit 13 sets, for example, the control information previously determined by the manufacturer of the broadcast receiving apparatus 10 in the analog broadcast receiving unit 11.
  • the analog broadcast receiving section 11 uses the control information set by the reception operation control section 13 to perform an analog broadcast wave receiving operation. Further, the analog broadcast receiving unit 11 detects the reception status during this receiving operation and outputs it to the optimization processing unit 12.
  • the optimization processing unit 12 performs optimization processing using the reception status acquired from the analog broadcast receiving unit 11 and the control information set in the analog broadcast receiving unit 11, and updates the control information. ..
  • the reception operation control unit 13 sets the control information updated by the optimization processing unit 12 in the analog broadcast reception unit 11.
  • FIG. 4 is a diagram showing an example of various kinds of information used in the broadcast receiving device 10 according to the first embodiment.
  • the analog broadcast receiving unit 11 is receiving an analog broadcast wave of frequency “80.2” and the control information “a” is set for this analog broadcast receiving unit 11, the received power is “60”. , SN is “30”.
  • the control information “b” is set for the analog broadcast receiving unit 11 while receiving the same frequency “80.2”, it is assumed that the received power is “60” and the SN is “20”.
  • the optimization processing unit 12 sets the control information “a” for which the SN as the reception performance result is better for the frequency “80.2” as the optimum value.
  • the reception operation control unit 13 sets the control information “a” to the analog broadcast receiving unit 11 when the analog broadcast receiving unit 11 receives the frequency “80.2” next time.
  • the optimization processing unit 12 may include one or more reception conditions including the reception power (for example, multipath, Or SN), and one or more reception performance results including SN (eg, SNAID), it is possible to learn and update one or more control information including filter coefficients. Further, the optimization processing unit 12 may use, as the reception performance result, the FFT result obtained by performing the fast Fourier transform (FFT) on the analog broadcast wave signal by the Fourier transform unit 15.
  • FFT fast Fourier transform
  • the high-cut control performed by the noise suppression unit 114 of the analog broadcast reception unit 11 has a trade-off relationship that noise is reduced, but the widening of the sound quality is also lost due to the loss of high-frequency components. Therefore, the optimization processing unit 12 evaluates the perceptual performance by high-cut control or the like using the FFT result of the Fourier transform unit 15.
  • the broadcast receiving device 10 includes the analog broadcast receiving unit 11, the optimization processing unit 12, and the reception operation control unit 13.
  • the analog broadcast receiving unit 11 performs an operation of receiving an analog broadcast wave using the control information, and outputs a reception condition of this analog broadcast wave and a reception performance result of this reception operation.
  • the optimization processing unit 12 updates the control information by learning the relationship between the control information for the reception condition and the reception performance result.
  • the reception operation control unit 13 sets the control information updated by the optimization processing unit 12 in the analog broadcast reception unit 11. With this configuration, the broadcast receiving apparatus 10 can perform the receiving operation according to various receiving conditions depending on the radio wave environment and the like.
  • the broadcast receiving apparatus 10 shown in FIG. 1 has a configuration for receiving an analog broadcast wave, but it may have a configuration for receiving a digital broadcast wave.
  • FIG. 5 is a block diagram showing a modification of the broadcast receiving device 10 according to the first embodiment.
  • FIG. 6 is a block diagram showing a configuration example of the digital broadcast receiving unit 16.
  • the digital broadcast wave is a digital radio broadcast wave or a digital television broadcast wave.
  • the digital broadcast receiving unit 16 includes a tuner unit 161 that receives a digital broadcast wave having an arbitrary frequency, and a demodulation unit 162 that demodulates the digital broadcast wave received by the tuner unit 161.
  • the demodulation unit 162 uses the AD conversion unit 163 that converts the digital broadcast wave received by the tuner unit 161 into a digital signal, the Fourier transform unit 164 that performs FFT processing on the digital signal, and the orthogonal frequency using the FFT result of the Fourier transform unit 164.
  • An OFDM demodulation unit 165 that performs a division multiplexing (OFDM) demodulation process and a reception status detection unit 166 that detects the reception status of a digital broadcast wave using the demodulated digital signal are provided.
  • OFDM division multiplexing
  • the digital broadcast receiving unit 16 has the Fourier transform unit 164 inside, the Fourier transform unit 15 shown in FIG. 1 is not necessary. Although illustration is omitted, the digital signal demodulated by the OFDM demodulation unit 165 is output as voice from a speaker installed in the vehicle 1 or displayed on a display installed in the vehicle 1.
  • the reception status detected by the reception status detection unit 166 is received power, PER (Packet Error Rate), CN (Carrier to Noise ratio), or the like.
  • the reception status detection unit 166 may detect the reception status using a known technique.
  • the reception status detection unit 166 outputs the detected reception status to the optimization processing unit 12.
  • the reception power, PER, CN, etc. are used in the optimization processing unit 12 as a reception condition or a reception performance result.
  • the Fourier transform unit 164 also outputs the FFT result to the optimization processing unit 12.
  • the FFT result is used as a reception performance result in the optimization processing unit 12.
  • the digital broadcast receiving unit 16 performs a digital broadcast wave receiving operation according to the control information from the receiving operation control unit 13.
  • the control information includes at least one of the filter of the tuner unit 161 and automatic gain control.
  • the control information is the filter of the tuner unit 161, automatic gain control, or the switching threshold between the one-segment broadcasting and the full-segment broadcasting of the demodulating unit 162. Information about at least one of the above.
  • the optimization processing unit 12 and the reception operation control unit 13 in the broadcast receiving apparatus 10 having the configurations shown in FIGS. 5 and 6 are the optimization processing unit 12 in the broadcast receiving apparatus 10 having the configurations shown in FIGS. Also, the same processing as that of the reception operation control unit 13 may be performed. Further, the broadcast receiving device 10 may be configured to include two, a digital broadcast receiving unit 16 that receives a digital radio broadcast wave and a digital broadcast receiving unit 16 that receives a digital television broadcast wave.
  • the broadcast receiving apparatus 10 may be configured to include both the analog broadcast receiving unit 11 and the digital broadcast receiving unit 16.
  • the optimization processing unit 12 may perform optimization processing separately for each of the control information of the analog broadcast receiving unit 11 and the control information of the digital broadcast receiving unit 16.
  • FIG. 7 is a block diagram showing a configuration example of the broadcast receiving device 10 according to the second embodiment.
  • the broadcast receiving apparatus 10 according to the second embodiment is different from the broadcast receiving apparatus 10 according to the first embodiment shown in FIG. 1 in that a control information storage unit 20, a situation determination unit 21, and a program music determination unit 22 are added. It has a different structure.
  • the vehicle 1 is provided with a high-accuracy locator 2, a vehicle position discriminating unit 3, a vehicle outside camera 4, a surrounding situation discriminating unit 5, an in-vehicle camera 6, an occupant discriminating unit 7, and a communication device 8.
  • a server device 30 exists outside the vehicle 1. 7, parts that are the same as or correspond to those in FIGS. 1 and 2 are given the same reference numerals and description thereof is omitted.
  • the content of analog broadcast waves is pop, classic, or talk.
  • pops since there is a signal in the high frequency range, if the effect of high cut control by the noise suppression unit 114 is increased when noise occurs, the spread of sound quality is lost, but in the case of classical music and talk, there is no signal in the high frequency range. , Even if the effect of high-cut control is made larger than that of pop music, the effect on sound quality is small.
  • the passengers have different audible preferences such as "sound quality is more important than noise removal" or "noise removal is more important than sound quality". Therefore, the broadcast receiving apparatus 10 according to the second embodiment performs the receiving operation of the analog broadcast wave by using the control information corresponding to the situation of the content and the passenger.
  • the high-precision locator 2 receives a signal from, for example, a GPS (Global Positioning System) satellite.
  • the vehicle position discriminating unit 3 discriminates the position (for example, latitude and longitude) of the vehicle 1 using the signal received by the high precision locator 2.
  • the host vehicle position determination unit 3 outputs information indicating the determined position of the vehicle 1 (hereinafter, referred to as “position information”) to the situation determination unit 21.
  • the exterior camera 4 captures an image around the vehicle 1.
  • the vehicle exterior camera 4 is one or more cameras such as a front camera or a side camera.
  • the surrounding situation determination unit 5 uses the image captured by the vehicle exterior camera 4 to determine the surrounding situation of the vehicle 1.
  • the situation around the vehicle 1 is, for example, the presence or absence of an obstacle such as a truck existing around the vehicle 1 that may affect the radio wave environment.
  • the surrounding situation determination unit 5 outputs information indicating the determined surrounding situation of the vehicle 1 (hereinafter, referred to as “surrounding situation information”) to the situation determination unit 21.
  • the in-vehicle camera 6 captures an image of an occupant in the vehicle 1.
  • the in-vehicle camera 6 is one or more cameras, such as a DMS (Driver Monitoring System) camera for monitoring the driver's condition.
  • the passenger determination unit 7 compares the image of the passenger registered in advance with the image captured by the in-vehicle camera 6, and determines the passenger of the vehicle 1.
  • the passenger determination unit 7 outputs information indicating the determined passenger (hereinafter referred to as “passenger information”) to the situation determination unit 21. Further, in recent years, a display and a speaker are provided for each seat of the vehicle 1, and it is possible to view different contents for each passenger. In that case, the passenger determination unit 7 may determine the passenger for each seat.
  • the communication device 8 communicates with the server device 30 existing outside the vehicle 1 via the Internet.
  • the communication device 8 may be a smartphone, a mobile phone, or the like, or may be a communication device built in a car navigation device or the like.
  • the server device 30 stores, for example, information indicating the content of the program being broadcast or the genre of the music (hereinafter referred to as “program music information”).
  • the communication device 8 acquires the program song information from the server device 30 on the Internet and outputs it to the program song determination unit 22.
  • the program song determination section 22 determines the content of the analog broadcast wave being received by the analog broadcast receiving section 11 using the program song information.
  • the program music determination section 22 outputs the determined content to the situation determination section 21.
  • the program music determination unit 22 may use the FFT result from the Fourier transform unit 15 instead of the content to determine the frequency characteristic of the analog broadcast wave being received by the analog broadcast reception unit 11.
  • the program music determination section 22 outputs the determined frequency characteristic to the situation determination section 21.
  • the situation determination unit 21 includes the position information from the vehicle position determination unit 3, the surrounding situation information from the surrounding situation determination unit 5, the passenger information from the passenger determination unit 7, or the content from the program song determination unit 22, Alternatively, the current situation is determined using at least one of the frequency characteristics. In addition, the situation determination unit 21 may add the vehicle type information of the vehicle 1 to the current situation. The situation determination unit 21 outputs the determined current situation to the optimization processing unit 12. In addition, the situation determination unit 21 may store the determined current situation in the control information storage unit 20.
  • the optimization processing unit 12 updates the control information so as to match the current situation determined by the situation determination unit 21, and outputs the updated control information to the reception operation control unit 13. Further, the optimization processing unit 12 may store the updated control information in the control information storage unit 20 in association with the reception condition, the situation, and the reception performance result used for the update. When updating the control information for each situation and storing it in the control information storage unit 20, the optimization processing unit 12 may read the control information corresponding to the situation and output it to the reception operation control unit 13. In addition, when the manufacturer of the broadcast receiving apparatus 10 stores the control information for each situation in the control information storage unit 20 in advance, the optimization processing unit 12 determines the current status determined by the situation determination unit 21. The situation that is the same as or similar to the situation and its control information may be read and output to the reception operation control unit 13.
  • the reception operation control unit 13 sets the control information updated by the optimization processing unit 12 in the analog broadcast reception unit 11.
  • FIG. 8 is a diagram showing an example of various information used in the broadcast receiving device 10 according to the second embodiment.
  • the control information storage unit 20 stores, as the reception conditions output by the analog broadcast receiving unit 11, the frequency being received by the analog broadcast receiving unit 11, the received power, and the multipath.
  • the position, content, vehicle type, and passenger are stored as the situation determined by the situation determination unit 21.
  • SN is stored as the reception performance result output by the analog broadcast receiving unit 11.
  • control information storage unit 20 stores in advance control information corresponding to the preference of the passenger. For example, the effect of the high-cut control is small for a passenger who "emphasizes sound quality rather than noise removal". Such control information is stored in advance. On the other hand, control information for increasing the effect of high-cut control is stored in advance for passengers who emphasize "noise removal rather than sound quality".
  • FIG. 9 is a flowchart showing an operation example of the broadcast receiving device 10 according to the second embodiment.
  • the broadcast receiving apparatus 10 starts the operation shown in the flowchart of FIG. 9 when the accessory power supply of the vehicle 1 is turned on, and ends the operation when the accessory power supply is turned off, for example.
  • the broadcast receiving device 10 may perform the operation shown in the flowchart of FIG. 9 for each seat.
  • step ST21 the situation determination unit 21 reads the control information corresponding to the passenger determined by the passenger determination unit 7 from the control information storage unit 20 and outputs it to the optimization processing unit 12.
  • the optimization processing unit 12 outputs this control information to the reception operation control unit 13.
  • the reception operation control unit 13 sets this control information in the analog broadcast reception unit 11.
  • the analog broadcast receiving unit 11 performs an operation of receiving an analog broadcast wave according to this control information. Thereby, the broadcast receiving apparatus 10 can perform the receiving operation according to the passenger's preference.
  • step ST22 the situation determination unit 21 determines whether the content or frequency characteristic of the analog broadcast wave being received by the analog broadcast reception unit 11 has changed, based on the determination result of the content or frequency characteristic from the program music determination unit 22. To judge. When the content or the frequency characteristic has changed (step ST22 “YES”), the optimization processing unit 12 updates the control information according to the changed content or the frequency characteristic, and causes the reception operation control unit 13 to update the updated control information. The signal is output to the analog broadcast receiving unit 11 via (step ST23). On the other hand, if the content and frequency characteristics have not changed (step ST22 “NO”), the process proceeds to step ST24.
  • step ST23 when the control information storage unit 20 stores the control information corresponding to the content or the frequency characteristic that is the same or similar to the changed content or the frequency characteristic, the optimization processing unit 12 determines the same or similar content.
  • the control information corresponding to the frequency characteristic may be read from the control information storage unit 20.
  • the control information stored in the control information storage unit 20 may be information learned and stored by the optimization processing unit 12 in the past, or the manufacturer of the broadcast receiving apparatus 10 may store the control information in the control information storage unit 20. Alternatively, it may be preset. Further, as in the first embodiment, the optimization processing unit 12 may learn control information for the changed content or frequency characteristic based on the reception condition and the reception performance result from the analog broadcast receiving unit 11. Good.
  • the optimization processing unit 12 updates the control information so that the effect of high-cut control is small for contents such as pops having a high-frequency signal.
  • the optimization processing unit 12 updates the control information so that the effect of the high cut control becomes large with respect to the content such as classical music having no high frequency signal.
  • the broadcast receiving device 10 can perform the receiving operation according to the content or the frequency characteristic.
  • step ST24 the situation determination unit 21 determines whether or not the current position is a radio wave peculiar place based on the position information from the vehicle position determination unit 3. Whether or not the position of the vehicle 1 is in the radio wave peculiar environment is determined based on the position where the vehicle 1 has traveled in the past and the reception condition at that position, which is stored in the control information storage unit 20. R. For example, when the received power is extremely low only at a certain position or the number of multipaths is increased, the situation determination unit 21 determines that position as a radio wave peculiar place.
  • the optimization processing unit 12 updates the control information according to the radio wave peculiar place, and the updated control information is received via the reception operation control unit 13. And outputs to the analog broadcast receiving unit 11 (step ST25).
  • step ST24 “NO” the process proceeds to step ST26.
  • step ST25 if the control information corresponding to the reception condition that is the same as or similar to the current reception condition of the radio wave peculiar place is stored in the control information storage unit 20, the optimization processing unit 12 determines the same or similar reception condition.
  • the control information corresponding to may be read from the control information storage unit 20.
  • the control information stored in the control information storage unit 20 may be information learned and stored by the optimization processing unit 12 in the past, or the manufacturer of the broadcast receiving apparatus 10 may store the control information in the control information storage unit 20. Alternatively, it may be preset. Further, as in the first embodiment, the optimization processing unit 12 may learn the control information for the radio wave peculiar place based on the reception condition and the reception performance result from the analog broadcast receiving unit 11. As a result, the broadcast receiving apparatus 10 can improve temporary reception deterioration when the vehicle 1 travels in a radio wave unique place.
  • the optimization processing unit 12 does not have to update the control information in step ST25.
  • the information about the size of the radio wave peculiar place which is a standard for updating or continuing the control information, may be predetermined in the optimization processing unit 12 or the control information storage unit 20. Further, the information regarding the size of the radio wave peculiar place may be different for each passenger. As a result, the broadcast receiving device 10 can suppress a feeling of strangeness in hearing caused by the frequent update of the control information.
  • step ST26 the situation determination unit 21 determines whether or not an obstacle such as a truck exists around the vehicle 1 based on the surrounding situation information from the surrounding situation determination unit 5.
  • the optimization processing unit 12 updates the control information according to the obstacle, and updates the updated control information via the reception operation control unit 13.
  • the signal is output to the analog broadcast receiving unit 11 (step ST27).
  • step ST26 “NO” the process proceeds to step ST28.
  • step ST27 when the control information storage unit 20 stores control information for an obstacle that is the same as or similar to an obstacle existing around the vehicle 1, the optimization processing unit 12 determines that the obstacle is the same or similar.
  • the corresponding control information may be read from the control information storage unit 20.
  • the control information stored in the control information storage unit 20 may be information learned and stored by the optimization processing unit 12 in the past, or the manufacturer of the broadcast receiving apparatus 10 may store the control information in the control information storage unit 20. Alternatively, it may be preset. Further, the optimization processing unit 12 may learn the control information for the obstacle based on the reception condition from the analog broadcast receiving unit 11 and the reception performance result, as in the first embodiment. As a result, the broadcast receiving apparatus 10 can improve temporary reception deterioration due to external factor noise from the truck or the like when an obstacle such as the truck travels around the vehicle 1.
  • the optimization processing unit 12 may not update the control information in step ST27 depending on the relative positional relationship between the obstacle and the vehicle 1. For example, in a situation where the truck, which is an obstacle, and the vehicle 1 are running side by side, it is expected that reception degradation will occur during the parallel running, so the optimization processing unit 12 updates the control information. On the other hand, in a situation where the vehicle 1 overtakes the truck or the truck overtakes the vehicle 1, the degradation of reception is expected to end in an instant, so the optimization processing unit 12 does not update the control information.
  • the information on the relative positional relationship or the like, which is a guideline for updating or continuing the control information may be set in advance in the optimization processing unit 12 or the control information storage unit 20.
  • step ST28 the situation determination unit 21 determines whether or not the passenger determined by the passenger determination unit 7 has changed, that is, whether or not the passenger has been getting on or off.
  • step ST28 “YES” the process returns to step ST21.
  • step ST28 “NO” the process returns to step ST22.
  • the server device 30 may be configured to collect and accumulate information indicating correspondence between various information and control information as shown in FIG. 8 from the broadcast receiving device 10 mounted on a plurality of vehicles. Good.
  • the communication device 8 of the vehicle 1 reads the control information and the like stored in the control information storage unit 20 and transmits it to the server device 30. Further, the communication device 8 of the vehicle 1 acquires the control information and the like collected from the broadcast receiving device 10 of the other vehicle from the server device 30 and stores the control information in the control information storage unit 20 of the vehicle 1. At this time, it is preferable that the communication device 8 obtains control information of another vehicle that is the same as or similar to the vehicle type of the vehicle 1 from the server device 30.
  • the broadcast receiving device 10 can share control information among a plurality of vehicles. Therefore, for example, even in a place where the vehicle 1 has never traveled in the past, it is possible to determine whether or not the place is a radio wave peculiar place.
  • the communication device 8 may directly acquire control information or the like from another vehicle through inter-vehicle communication or the like.
  • the broadcast receiving device 10 includes the situation determination unit 21 that determines the current situation.
  • the optimization processing unit 12 updates the control information when the situation determined by the situation determination unit 21 changes. Thereby, the broadcast receiving apparatus 10 can change the receiving operation at any time according to the change of the situation.
  • the broadcast receiving apparatus 10 includes a program song determining section 22 that determines the content of the analog broadcast wave being received by the analog broadcast receiving section 11 by using the program song information existing on the Internet. ..
  • the situation determination unit 21 determines whether the content determined by the program music determination unit 22 has changed.
  • the optimization processing unit 12 updates the control information according to the changed content.
  • the broadcast receiving apparatus 10 can determine the content being received in real time, and can update the control information suitable for the content.
  • the broadcast receiving apparatus 10 can improve the audible performance by updating the control information suitable for the content.
  • the broadcast receiving apparatus 10 also includes a Fourier transform unit 15 that performs a Fourier transform on the analog broadcast wave signal received by the analog broadcast receiving unit 11.
  • the program music determination section 22 determines the frequency characteristic of the analog broadcast wave based on the FFT result of the Fourier transform section 15.
  • the situation determination unit 21 determines whether the frequency characteristic determined by the program music determination unit 22 has changed.
  • the optimization processing unit 12 updates the control information according to the changed frequency characteristic.
  • the broadcast receiving apparatus 10 can estimate the frequency characteristic corresponding to the content by using the FFT result, and can update the control information suitable for the frequency characteristic.
  • the broadcast receiving apparatus 10 can improve the audible performance by updating the control information to be suitable for the frequency characteristic.
  • the broadcast receiving device 10 also includes a control information storage unit 20 that stores control information for each passenger.
  • the situation determination unit 21 selects, from the control information storage unit 20, the control information corresponding to the passenger riding in the vehicle 1.
  • the optimization processing unit 12 updates the control information corresponding to the passenger selected by the situation determination unit 21 when the situation determined by the situation determination unit 21 changes.
  • the broadcast receiving apparatus 10 can reflect the control information that suits the passenger's preference in the receiving operation.
  • the broadcast receiving device 10 can update the control information that suits the passenger's preference at any time according to the change in the situation.
  • the situation determination unit 21 of the second embodiment determines whether or not the current position of the vehicle 1 is a unique radio wave environment.
  • the optimization processing unit 12 updates the control information when the situation determination unit 21 determines that the current position of the vehicle 1 is in a unique radio wave environment.
  • the broadcast receiving apparatus 10 can update the optimum control information even when the radio wave environment changes, and can improve the reception performance.
  • the situation determination unit 21 also determines whether or not an obstacle exists around the vehicle 1.
  • the optimization processing unit 12 updates the control information when the situation determination unit 21 determines that an obstacle exists around the vehicle 1.
  • the broadcast receiving apparatus 10 can update the control information to the optimum control information with respect to external factor noise from an obstacle such as a truck, and can improve the reception performance.
  • the broadcast receiving apparatus 10 shown in FIG. 7 is configured to receive an analog broadcast wave, but it may be configured to receive a digital broadcast wave.
  • the broadcast receiving apparatus 10 shown in FIG. 7 includes a digital broadcast receiving unit 16 shown in FIGS. 5 and 6 in place of the analog broadcast receiving unit 11 and the Fourier transform unit 15.
  • the broadcast receiving device 10 may be configured to include both the analog broadcast receiving unit 11 and the digital broadcast receiving unit 16.
  • the program song determining unit 22 acquires the program song information from the server device 30 via the communication device 8, and The program music information included in the digital broadcast wave being received may be acquired.
  • FIG. 10 is a diagram showing an example of various information used when the broadcast receiving device 10 according to the second embodiment is configured to receive digital television broadcast waves.
  • the control information storage unit 20 stores the channel (CH) being received by the digital broadcast receiving unit 16, the received power, the PER, and the CN as the receiving conditions output by the digital broadcast receiving unit 16. ing.
  • the position, content, vehicle type, and passenger are stored as the situation determined by the situation determination unit 21.
  • the viewing state is stored as the reception performance result output by the digital broadcast receiving unit 16.
  • the viewing state indicates whether the demodulation unit 162 of the digital broadcast reception unit 16 outputs one segment broadcast (hereinafter, referred to as “one segment”) or full segment broadcast (hereinafter, referred to as “full segment”).
  • the manufacturer of the broadcast receiving apparatus 10 has previously determined a switching threshold between One Seg and Full Seg that changes in association with PER, CN, etc., and sets it in the digital broadcast receiving unit 16 as control information.
  • a switching threshold between One Seg and Full Seg that changes in association with PER, CN, etc.
  • switching between one-segment and full-segment has different preferences depending on the program content or passengers. For example, in the case of sports programs, full-segment viewing is preferable because small characters such as scores cannot be seen in 1-segment.
  • the broadcasting receiving apparatus 10 Similar to the analog broadcasting, the broadcasting receiving apparatus 10 according to the second embodiment also updates the one-segment and full-segment switching thresholds, which is one of the control information, for such digital television broadcasting according to the passenger and the content. be able to.
  • the optimization processing unit 12 sets the switching threshold between 1Seg and FullSeg to a value for which it is difficult to switch to 1Seg and easy to switch to FullSeg for the passenger for whom the “FullSeg priority mode” is preset.
  • the optimization processing section 12 is unlikely to switch the switching threshold between 1Seg and FullSeg to 1Seg. And set to a value that makes it easy to switch to Full Seg.
  • the optimization processing unit 12 may set the switching threshold between 1Seg and FullSeg to a passenger for which the “FullSeg priority mode” is set in advance, a value that is difficult to switch to 1Seg and that is easy to switch to FullSeg.
  • the optimization processing unit 12 may not switch from Full Seg to One Seg depending on the size of the radio wave peculiar place. It may be a threshold value. As a result, the broadcast receiving device 10 can suppress the difficulty in viewing due to the frequent switching between one-segment and full-segment.
  • the control information storage unit 20 in the broadcast receiving device 10 is a built-in memory (not shown) of the processing circuit 100 or the memory 102.
  • the functions of the analog broadcast receiving unit 11, the digital broadcast receiving unit 16, the optimization processing unit 12, the receiving operation control unit 13, the Fourier transforming unit 15, the situation determining unit 21, and the program music determining unit 22 in the broadcast receiving apparatus 10 are processing. It is realized by a circuit.
  • the processing circuit may be the processing circuit 100 as dedicated hardware, or the processor 101 that executes the program stored in the memory 102.
  • the processing circuit 100 when the processing circuit is dedicated hardware, the processing circuit 100 includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, and an ASIC (Application Specific Integrated Circuit). ), FPGA (Field Programmable Gate Array), or a combination thereof.
  • the functions of the analog broadcast reception unit 11, the digital broadcast reception unit 16, the optimization processing unit 12, the reception operation control unit 13, the Fourier transform unit 15, the situation determination unit 21, and the program music determination unit 22 are realized by a plurality of processing circuits 100. Alternatively, the functions of the respective units may be combined and implemented by one processing circuit 100. For example, as shown in FIG. 11, the functions of the analog broadcast receiving unit 11 and the digital broadcast receiving unit 16 may be realized by the receiving circuit 103.
  • the processing circuit is the processor 101
  • the function of the program music determination section 22 are realized by software, firmware, or a combination of software and firmware.
  • the software or firmware is described as a program and stored in the memory 102.
  • the processor 101 realizes the function of each unit by reading and executing the program stored in the memory 102. That is, the broadcast receiving apparatus 10 includes a memory 102 for storing a program that, when executed by the processor 101, results in the steps shown in the flowchart of FIG. 3 and the like being executed.
  • this program is a procedure or method of the analog broadcast receiving unit 11, the digital broadcast receiving unit 16, the optimization processing unit 12, the receiving operation control unit 13, the Fourier transform unit 15, the situation determination unit 21, and the program music determination unit 22. It can be said that it makes a computer execute.
  • the processor 101 is a CPU (Central Processing Unit), a processing device, a computing device, a microprocessor, or the like.
  • the memory 102 may be a RAM (Random Access Memory), a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), or a non-volatile or volatile semiconductor memory such as a flash memory, a hard disk, a flexible disk, or the like. Magnetic disk, or an optical disk such as a CD (Compact Disc) or a DVD (Digital Versatile Disc).
  • the processing circuit in the broadcast receiving device 10 can realize the above-described functions by hardware, software, firmware, or a combination thereof.
  • the broadcast receiving device learns the control coefficient, it is suitable for use in a broadcast receiving device such as a vehicle in which the radio wave environment changes momentarily.

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Abstract

An analog broadcast receiver (11) and/or a digital broadcast receiver (16) performs a reception operation for receiving broadcast waves using control information, and outputs the reception condition for broadcast waves and the reception performance result for the reception operation. An optimization processing unit (12) learns the relationship between control information with respect to the reception condition and the reception performance result, and updates the control information. A reception operation control unit (13) sets the control information updated by the optimization processing unit (12) to the analog broadcast receiver (11) and/or the digital broadcast receiver (16).

Description

放送受信装置及び放送受信方法Broadcast receiving apparatus and broadcast receiving method
　この発明は、車両に搭載される放送受信装置及び放送受信方法に関するものである。 The present invention relates to a broadcast receiving device and a broadcast receiving method mounted on a vehicle.
　車両に搭載される放送受信装置は、電波環境、車種、及びアンテナの特性等、様々な環境に合わせて、受信動作の設定を調整している。例えば、特許文献１に記載された放送受信装置は、ＦＭ放送信号に重畳された音楽等のジャンルを示す識別データを検出し、検出した識別データに対応する制御情報を使用して音楽ジャンルごとに受信動作を変化させていた。 ▽The broadcasting receiver installed in the vehicle adjusts the reception operation settings according to various environments such as radio environment, vehicle type, and antenna characteristics. For example, the broadcast receiving device described in Patent Document 1 detects identification data indicating a genre of music or the like superimposed on an FM broadcast signal, and uses control information corresponding to the detected identification data for each music genre. The receiving operation was changing.
特開２００１－６０９２３号公報JP 2001-60923 A
　特許文献１に記載された放送受信装置は、識別データに対応する制御情報が存在しない場合、音楽ジャンルにあわせた受信動作を実施できなかった。また、特許文献１に記載された放送受信装置は、音楽ジャンルにあわせた制御情報に変化させるのみであり、電波環境等の変化に合わせて随時制御情報を更新していくわけではなかった。 The broadcast receiving device described in Patent Document 1 could not perform the receiving operation according to the music genre when the control information corresponding to the identification data does not exist. Further, the broadcast receiving device described in Patent Document 1 only changes the control information to match the music genre, and does not always update the control information according to changes in the radio environment.
　このように、従来の放送受信装置は、受信条件ごとの受信動作の制御情報が事前に定められており、制御情報が定められていない受信条件に対応できないという課題があった。また、従来の放送受信装置は、受信条件の変化にあわせて随時受信動作を変化させることができないという課題があった。 As described above, the conventional broadcast receiving device has a problem that the control information of the receiving operation for each receiving condition is predetermined and it is not possible to correspond to the receiving condition for which the control information is not fixed. Further, the conventional broadcast receiving device has a problem that the receiving operation cannot be changed at any time according to the change in the receiving condition.
　この発明は、上記のような課題を解決するためになされたもので、様々な受信条件にあわせた受信動作を実施することのできる放送受信装置を提供することを目的とする。 The present invention has been made to solve the above problems, and an object of the present invention is to provide a broadcast receiving device capable of performing a receiving operation according to various receiving conditions.
　この発明に係る放送受信装置は、制御情報を用いて放送波の受信動作を行い、放送波の受信条件及び受信動作の受信性能結果を出力する受信部と、受信条件に対する制御情報と受信性能結果との関係を学習して制御情報を更新する最適化処理部と、最適化処理部により更新された制御情報を受信部に対して設定する受信動作制御部とを備えるものである。 A broadcast receiving apparatus according to the present invention performs a reception operation of a broadcast wave using control information, outputs a reception condition of the broadcast wave and a reception performance result of the reception operation, control information for the reception condition, and a reception performance result. An optimization processing unit that updates the control information by learning the relationship with the above, and a reception operation control unit that sets the control information updated by the optimization processing unit to the reception unit.
　この発明によれば、様々な受信条件にあわせた受信動作を実施することができる。 According to the present invention, it is possible to carry out the receiving operation according to various receiving conditions.
実施の形態１に係る放送受信装置の構成例を示すブロック図である。FIG. 3 is a block diagram showing a configuration example of a broadcast receiving device according to the first embodiment. 図１におけるアナログ放送受信部の構成例を示すブロック図である。FIG. 3 is a block diagram showing a configuration example of an analog broadcast receiving section in FIG. 1. 実施の形態１に係る放送受信装置の動作例を示すフローチャートである。5 is a flowchart showing an operation example of the broadcast receiving device according to the first embodiment. 実施の形態１に係る放送受信装置において使用される各種情報の例を示す図である。FIG. 4 is a diagram showing an example of various information used in the broadcast receiving device according to the first embodiment. 実施の形態１に係る放送受信装置の変形例を示すブロック図である。FIG. 7 is a block diagram showing a modified example of the broadcast receiving apparatus according to the first embodiment. 図５におけるデジタル放送受信部の構成例を示すブロック図である。6 is a block diagram showing a configuration example of a digital broadcast receiving section in FIG. 5. FIG. 実施の形態２に係る放送受信装置の構成例を示すブロック図である。FIG. 7 is a block diagram showing a configuration example of a broadcast receiving device according to a second embodiment. 実施の形態２に係る放送受信装置において使用される各種情報の例を示す図である。FIG. 6 is a diagram showing an example of various information used in the broadcast receiving device according to the second embodiment. 実施の形態２に係る放送受信装置の動作例を示すフローチャートである。9 is a flowchart showing an operation example of the broadcast receiving apparatus according to the second embodiment. 実施の形態２に係る放送受信装置がデジタルテレビ放送波を受信する構成である場合に使用される各種情報の例を示す図である。FIG. 8 is a diagram showing an example of various information used when the broadcast receiving device according to the second embodiment is configured to receive a digital television broadcast wave. 各実施の形態に係る放送受信装置のハードウェア構成の一例を示す図である。It is a figure which shows an example of the hardware constitutions of the broadcast receiving apparatus which concerns on each embodiment. 各実施の形態に係る放送受信装置のハードウェア構成の別の例を示す図である。It is a figure which shows another example of the hardware constitutions of the broadcast receiving apparatus which concerns on each embodiment.
　以下、この発明をより詳細に説明するために、この発明を実施するための形態について、添付の図面に従って説明する。
実施の形態１．
　図１は、実施の形態１に係る放送受信装置１０の構成例を示すブロック図である。放送受信装置１０は、車両１に搭載されてアナログ放送波を受信する。アナログ放送波は、ＡＭラジオ放送波、又はＦＭラジオ放送波の少なくとも一方を含む。この放送受信装置１０は、アナログ放送受信部１１と、最適化処理部１２と、受信動作制御部１３とを備える。なお、後述するように、放送受信装置１０はフーリエ変換部１５を備えてもよい。 Hereinafter, in order to explain the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1.
FIG. 1 is a block diagram showing a configuration example of a broadcast receiving device 10 according to the first embodiment. The broadcast receiving device 10 is mounted on the vehicle 1 and receives an analog broadcast wave. The analog broadcast wave includes at least one of AM radio broadcast wave and FM radio broadcast wave. The broadcast receiving device 10 includes an analog broadcast receiving unit 11, an optimization processing unit 12, and a reception operation control unit 13. Note that, as will be described later, the broadcast receiving device 10 may include the Fourier transform unit 15.
　図２は、アナログ放送受信部１１の構成例を示すブロック図である。アナログ放送受信部１１は、任意の周波数のアナログ放送波を受信するチューナ部１１１と、チューナ部１１１が受信したアナログ放送波を復調する復調部１１２とを備える。復調部１１２は、チューナ部１１１が受信したアナログ放送波をデジタル信号に変換するＡＤ（Ａｎａｌｏｇ　Ｄｉｇｉｔａｌ）変換部１１３と、デジタル信号に含まれるノイズを抑制するノイズ抑制部１１４と、ノイズ抑制後のデジタル信号を用いてアナログ放送波の受信状況を検出する受信状況検出部１１５とを備える。なお、図示は省略するが、復調部１１２により復調されたデジタル信号は、車両１に設置されているスピーカから音声出力される。 FIG. 2 is a block diagram showing a configuration example of the analog broadcast receiving unit 11. The analog broadcast receiving unit 11 includes a tuner unit 111 that receives an analog broadcast wave having an arbitrary frequency, and a demodulation unit 112 that demodulates the analog broadcast wave received by the tuner unit 111. The demodulation unit 112 includes an AD (Analog Digital) conversion unit 113 that converts an analog broadcast wave received by the tuner unit 111 into a digital signal, a noise suppression unit 114 that suppresses noise included in the digital signal, and a digital signal after noise suppression. A reception status detection unit 115 that detects the reception status of the analog broadcast wave using the signal. Although illustration is omitted, the digital signal demodulated by the demodulation unit 112 is output as sound from a speaker installed in the vehicle 1.
　受信状況検出部１１５が検出する受信状況とは、受信電力、マルチパス、ＳＮ（Ｓｉｇｎａｌ　ｔｏ　Ｎｏｉｓｅ　ｒａｔｉｏ）、又はＳＩＮＡＤ（Ｓｉｇｎａｌ　ｔｏ　Ｎｏｉｓｅ　Ａｎｄ　Ｄｉｓｔｏｒｔｉｏｎ　ｒａｔｉｏ）等である。受信状況検出部１１５は、周知の技術を用いて受信状況を検出すればよい。受信状況検出部１１５は、検出した受信状況を最適化処理部１２へ出力する。 The reception status detected by the reception status detection unit 115 is reception power, multipath, SN (Signal to Noise ratio), or SINAD (Signal to Noise And Distribution ratio). The reception status detection unit 115 may detect the reception status using a known technique. The reception status detection unit 115 outputs the detected reception status to the optimization processing unit 12.
　また、アナログ放送受信部１１は、受信動作制御部１３からの制御情報に従い、アナログ放送波の受信動作を行う。制御情報は、チューナ部１１１のフィルタ、若しくは自動ゲイン制御、又は、復調部１１２のハイカット制御、音量制御、若しくはステレオとモノラルの比率制御（ステレオブレンド比）のうちの少なくとも１つに関する情報を含む。例えば、ノイズ抑制部１１４が行うハイカット制御は、ノイズが発生した場合に高域をフィルタによって減衰させることでこのノイズを軽減させる制御である。このハイカット制御に関する制御情報は、例えばフィルタ係数である。 Also, the analog broadcast receiving unit 11 performs an analog broadcast wave receiving operation according to the control information from the receiving operation control unit 13. The control information includes information about at least one of a filter of the tuner unit 111, automatic gain control, high cut control of the demodulation unit 112, volume control, and stereo/monaural ratio control (stereo blend ratio). For example, the high cut control performed by the noise suppression unit 114 is control that reduces high noise by attenuating a high frequency band by the filter when the noise occurs. The control information regarding the high cut control is, for example, a filter coefficient.
　最適化処理部１２は、受信状況検出部１１５が検出したアナログ放送波の受信状況と、受信動作制御部１３を介してアナログ放送受信部１１に設定した制御情報とを用いて、最適な制御情報を学習する。例えば、制御情報のうち、ノイズ抑制部１１４が行うハイカット制御のフィルタ係数を例にとる。また、受信状況に含まれる受信電力を受信条件とし、この受信状況に含まれるＳＮを受信性能結果とする。この例において、最適化処理部１２は、受信条件（つまり、受信電力）に対する制御情報（つまり、ハイカット制御のフィルタ係数）と受信性能結果（つまり、ＳＮ）との関係を、教師データあり機械学習、教師データなし機械学習、又は深層学習といったＡＩ（Ａｒｔｉｆｉｃｉａｌ　Ｉｎｔｅｌｌｉｇｅｎｃｅ）によって学習し、制御情報であるハイカット制御のフィルタ係数を、受信性能結果であるＳＮが最適値になるように更新する。最適化処理部１２は、更新した制御情報を受信動作制御部１３へ出力する。なお、受信状況のうち、受信条件に用いる項目と、受信性能結果に用いる項目とは、最適化処理部１２に対して予め定められているものとする。 The optimization processing unit 12 uses the reception status of the analog broadcast wave detected by the reception status detection unit 115 and the control information set in the analog broadcast reception unit 11 via the reception operation control unit 13 to optimize the optimum control information. To learn. For example, of the control information, the filter coefficient of the high cut control performed by the noise suppression unit 114 is taken as an example. Further, the reception power included in the reception status is used as the reception condition, and the SN included in the reception status is used as the reception performance result. In this example, the optimization processing unit 12 learns the relationship between the control information (that is, the filter coefficient of high-cut control) and the reception performance result (that is, SN) with respect to the reception condition (that is, received power) and the machine learning with teacher data. , Learning without AI data, learning by AI (Artificial Intelligence) such as deep learning, and the filter coefficient of high-cut control, which is control information, is updated so that SN, which is the reception performance result, becomes the optimum value. The optimization processing unit 12 outputs the updated control information to the reception operation control unit 13. It should be noted that the items used for the reception condition and the items used for the reception performance result in the reception situation are predetermined for the optimization processing unit 12.
　受信動作制御部１３は、最適化処理部１２により更新された制御情報を、アナログ放送受信部１１に対して設定する。アナログ放送受信部１１は、受信動作制御部１３により設定された制御情報を用いてアナログ放送波の受信動作を行い、受信動作中の受信状況を最適化処理部１２へ出力する。 The reception operation control unit 13 sets the control information updated by the optimization processing unit 12 in the analog broadcast reception unit 11. The analog broadcast reception unit 11 performs an operation of receiving an analog broadcast wave using the control information set by the reception operation control unit 13, and outputs the reception status during the reception operation to the optimization processing unit 12.
　図３は、実施の形態１に係る放送受信装置１０の動作例を示すフローチャートである。放送受信装置１０は、例えば、車両１のアクセサリ電源がオンになると図３のフローチャートに示される動作を開始し、アクセサリ電源がオフになると動作を終了する。 FIG. 3 is a flowchart showing an operation example of the broadcast receiving device 10 according to the first embodiment. For example, the broadcast receiving apparatus 10 starts the operation shown in the flowchart of FIG. 3 when the accessory power supply of the vehicle 1 is turned on, and ends the operation when the accessory power supply is turned off.
　ステップＳＴ１１において、受信動作制御部１３は、例えば、放送受信装置１０のメーカ等が事前に決定した制御情報を、アナログ放送受信部１１に対して設定する。
　ステップＳＴ１２において、アナログ放送受信部１１は、受信動作制御部１３により設定された制御情報を用いて、アナログ放送波の受信動作を行う。また、アナログ放送受信部１１は、この受信動作中の受信状況を検出し、最適化処理部１２へ出力する。
　ステップＳＴ１３において、最適化処理部１２は、アナログ放送受信部１１から取得した受信状況と、アナログ放送受信部１１に設定されている制御情報とを用いた最適化処理を行い、制御情報を更新する。
　次回のステップＳＴ１１において、受信動作制御部１３は、最適化処理部１２により更新された制御情報を、アナログ放送受信部１１に対して設定する。 In step ST11, the reception operation control unit 13 sets, for example, the control information previously determined by the manufacturer of the broadcast receiving apparatus 10 in the analog broadcast receiving unit 11.
In step ST12, the analog broadcast receiving section 11 uses the control information set by the reception operation control section 13 to perform an analog broadcast wave receiving operation. Further, the analog broadcast receiving unit 11 detects the reception status during this receiving operation and outputs it to the optimization processing unit 12.
In step ST13, the optimization processing unit 12 performs optimization processing using the reception status acquired from the analog broadcast receiving unit 11 and the control information set in the analog broadcast receiving unit 11, and updates the control information. ..
In the next step ST11, the reception operation control unit 13 sets the control information updated by the optimization processing unit 12 in the analog broadcast reception unit 11.
　図４は、実施の形態１に係る放送受信装置１０において使用される各種情報の例を示す図である。
　例えば、アナログ放送受信部１１が周波数「８０．２」のアナログ放送波を受信中であってこのアナログ放送受信部１１に対して制御情報「ａ」が設定された場合、受信電力が「６０」、ＳＮが「３０」であったとする。また、同じ周波数「８０．２」を受信中において、アナログ放送受信部１１に対して制御情報「ｂ」が設定された場合、受信電力が「６０」、ＳＮが「２０」であったとする。最適化処理部１２は、上記周波数「８０．２」について、受信性能結果であるＳＮがより良好だった制御情報「ａ」を最適値とする。受信動作制御部１３は、次回、アナログ放送受信部１１が上記周波数「８０．２」を受信する場合、制御情報「ａ」をアナログ放送受信部１１に対して設定する。 FIG. 4 is a diagram showing an example of various kinds of information used in the broadcast receiving device 10 according to the first embodiment.
For example, when the analog broadcast receiving unit 11 is receiving an analog broadcast wave of frequency “80.2” and the control information “a” is set for this analog broadcast receiving unit 11, the received power is “60”. , SN is “30”. When the control information “b” is set for the analog broadcast receiving unit 11 while receiving the same frequency “80.2”, it is assumed that the received power is “60” and the SN is “20”. The optimization processing unit 12 sets the control information “a” for which the SN as the reception performance result is better for the frequency “80.2” as the optimum value. The reception operation control unit 13 sets the control information “a” to the analog broadcast receiving unit 11 when the analog broadcast receiving unit 11 receives the frequency “80.2” next time.
　なお、ここでは、一例として受信条件が受信電力であり受信性能結果がＳＮである場合を説明したが、最適化処理部１２は、受信電力を含む１つ以上の受信条件（例えば、マルチパス、又はＳＮ）、及びＳＮを含む１つ以上の受信性能結果（例えば、ＳＮＡＩＤ）を用いて、フィルタ係数を含む１つ以上の制御情報を学習して更新することが可能である。また、最適化処理部１２は、受信性能結果として、フーリエ変換部１５がアナログ放送波の信号を高速フーリエ変換（ＦＦＴ）したＦＦＴ結果を用いてもよい。例えば、アナログ放送受信部１１のノイズ抑制部１１４によるハイカット制御は、ノイズを軽減させる一方、高域成分が失われることによって音質の広がりも失われるといったトレードオフの関係にある。そこで、最適化処理部１２は、ハイカット制御等による聴感上の性能を、フーリエ変換部１５のＦＦＴ結果を用いて評価する。 Here, as an example, the case where the reception condition is the reception power and the reception performance result is the SN has been described, but the optimization processing unit 12 may include one or more reception conditions including the reception power (for example, multipath, Or SN), and one or more reception performance results including SN (eg, SNAID), it is possible to learn and update one or more control information including filter coefficients. Further, the optimization processing unit 12 may use, as the reception performance result, the FFT result obtained by performing the fast Fourier transform (FFT) on the analog broadcast wave signal by the Fourier transform unit 15. For example, the high-cut control performed by the noise suppression unit 114 of the analog broadcast reception unit 11 has a trade-off relationship that noise is reduced, but the widening of the sound quality is also lost due to the loss of high-frequency components. Therefore, the optimization processing unit 12 evaluates the perceptual performance by high-cut control or the like using the FFT result of the Fourier transform unit 15.
　以上のように、実施の形態１に係る放送受信装置１０は、アナログ放送受信部１１、最適化処理部１２、及び受信動作制御部１３を備える。アナログ放送受信部１１は、制御情報を用いてアナログ放送波の受信動作を行い、このアナログ放送波の受信条件及びこの受信動作の受信性能結果を出力する。最適化処理部１２は、受信条件に対する制御情報と受信性能結果との関係を学習して制御情報を更新する。受信動作制御部１３は、最適化処理部１２により更新された制御情報をアナログ放送受信部１１に対して設定する。この構成により、放送受信装置１０は、電波環境等に依存する様々な受信条件にあわせた受信動作を実施することができる。 As described above, the broadcast receiving device 10 according to the first embodiment includes the analog broadcast receiving unit 11, the optimization processing unit 12, and the reception operation control unit 13. The analog broadcast receiving unit 11 performs an operation of receiving an analog broadcast wave using the control information, and outputs a reception condition of this analog broadcast wave and a reception performance result of this reception operation. The optimization processing unit 12 updates the control information by learning the relationship between the control information for the reception condition and the reception performance result. The reception operation control unit 13 sets the control information updated by the optimization processing unit 12 in the analog broadcast reception unit 11. With this configuration, the broadcast receiving apparatus 10 can perform the receiving operation according to various receiving conditions depending on the radio wave environment and the like.
　なお、図１に示される放送受信装置１０は、アナログ放送波を受信する構成であったが、デジタル放送波を受信する構成であってもよい。図５は、実施の形態１に係る放送受信装置１０の変形例を示すブロック図である。図６は、デジタル放送受信部１６の構成例を示すブロック図である。デジタル放送波は、デジタルラジオ放送波、又はデジタルテレビ放送波である。 The broadcast receiving apparatus 10 shown in FIG. 1 has a configuration for receiving an analog broadcast wave, but it may have a configuration for receiving a digital broadcast wave. FIG. 5 is a block diagram showing a modification of the broadcast receiving device 10 according to the first embodiment. FIG. 6 is a block diagram showing a configuration example of the digital broadcast receiving unit 16. The digital broadcast wave is a digital radio broadcast wave or a digital television broadcast wave.
　デジタル放送受信部１６は、任意の周波数のデジタル放送波を受信するチューナ部１６１と、チューナ部１６１が受信したデジタル放送波を復調する復調部１６２とを備える。復調部１６２は、チューナ部１６１が受信したデジタル放送波をデジタル信号に変換するＡＤ変換部１６３と、デジタル信号をＦＦＴ処理するフーリエ変換部１６４と、フーリエ変換部１６４のＦＦＴ結果を用いて直交周波数分割多重方式（ＯＦＤＭ）の復調処理を行うＯＦＤＭ復調部１６５と、復調後のデジタル信号を用いてデジタル放送波の受信状況を検出する受信状況検出部１６６とを備える。デジタル放送受信部１６は、フーリエ変換部１６４を内部に有しているため、図１に示されるフーリエ変換部１５が必要ない。なお、図示は省略するが、ＯＦＤＭ復調部１６５により復調されたデジタル信号は、車両１に設置されているスピーカから音声出力される、又は車両１に設置されているディスプレイに表示される。 The digital broadcast receiving unit 16 includes a tuner unit 161 that receives a digital broadcast wave having an arbitrary frequency, and a demodulation unit 162 that demodulates the digital broadcast wave received by the tuner unit 161. The demodulation unit 162 uses the AD conversion unit 163 that converts the digital broadcast wave received by the tuner unit 161 into a digital signal, the Fourier transform unit 164 that performs FFT processing on the digital signal, and the orthogonal frequency using the FFT result of the Fourier transform unit 164. An OFDM demodulation unit 165 that performs a division multiplexing (OFDM) demodulation process and a reception status detection unit 166 that detects the reception status of a digital broadcast wave using the demodulated digital signal are provided. Since the digital broadcast receiving unit 16 has the Fourier transform unit 164 inside, the Fourier transform unit 15 shown in FIG. 1 is not necessary. Although illustration is omitted, the digital signal demodulated by the OFDM demodulation unit 165 is output as voice from a speaker installed in the vehicle 1 or displayed on a display installed in the vehicle 1.
　受信状況検出部１６６が検出する受信状況とは、受信電力、ＰＥＲ（Ｐａｃｋｅｔ　Ｅｒｒｏｒ　Ｒａｔｅ）、又はＣＮ（Ｃａｒｒｉｅｒ　ｔｏ　Ｎｏｉｓｅ　ｒａｔｉｏ）等である。受信状況検出部１６６は、周知の技術を用いて受信状況を検出すればよい。受信状況検出部１６６は、検出した受信状況を最適化処理部１２へ出力する。受信電力、ＰＥＲ、及びＣＮ等は、最適化処理部１２において受信条件、又は受信性能結果として使用される。また、フーリエ変換部１６４は、ＦＦＴ結果を最適化処理部１２へ出力する。ＦＦＴ結果は、最適化処理部１２において受信性能結果として使用される。 The reception status detected by the reception status detection unit 166 is received power, PER (Packet Error Rate), CN (Carrier to Noise ratio), or the like. The reception status detection unit 166 may detect the reception status using a known technique. The reception status detection unit 166 outputs the detected reception status to the optimization processing unit 12. The reception power, PER, CN, etc. are used in the optimization processing unit 12 as a reception condition or a reception performance result. The Fourier transform unit 164 also outputs the FFT result to the optimization processing unit 12. The FFT result is used as a reception performance result in the optimization processing unit 12.
　デジタル放送受信部１６は、受信動作制御部１３からの制御情報に従い、デジタル放送波の受信動作を行う。デジタル放送受信部１６がデジタルラジオ放送波を受信するものである場合、制御情報は、チューナ部１６１のフィルタ、又は自動ゲイン制御のうちの少なくとも１つに関する情報を含む。デジタル放送受信部１６がデジタルテレビ放送波を受信するものである場合、制御情報は、チューナ部１６１のフィルタ、若しくは自動ゲイン制御、又は、復調部１６２のワンセグメント放送とフルセグメント放送との切り替え閾値のうちの少なくとも１つに関する情報を含む。 The digital broadcast receiving unit 16 performs a digital broadcast wave receiving operation according to the control information from the receiving operation control unit 13. When the digital broadcast receiving unit 16 receives a digital radio broadcast wave, the control information includes at least one of the filter of the tuner unit 161 and automatic gain control. When the digital broadcast receiving unit 16 receives a digital television broadcast wave, the control information is the filter of the tuner unit 161, automatic gain control, or the switching threshold between the one-segment broadcasting and the full-segment broadcasting of the demodulating unit 162. Information about at least one of the above.
　図５及び図６に示される構成の放送受信装置１０における最適化処理部１２、及び受信動作制御部１３は、図１及び図２に示される構成の放送受信装置１０における最適化処理部１２、及び受信動作制御部１３と同様の処理を行えばよい。また、放送受信装置１０は、デジタルラジオ放送波を受信するデジタル放送受信部１６と、デジタルテレビ放送波を受信するデジタル放送受信部１６の２つを備える構成であってもよい。 The optimization processing unit 12 and the reception operation control unit 13 in the broadcast receiving apparatus 10 having the configurations shown in FIGS. 5 and 6 are the optimization processing unit 12 in the broadcast receiving apparatus 10 having the configurations shown in FIGS. Also, the same processing as that of the reception operation control unit 13 may be performed. Further, the broadcast receiving device 10 may be configured to include two, a digital broadcast receiving unit 16 that receives a digital radio broadcast wave and a digital broadcast receiving unit 16 that receives a digital television broadcast wave.
　なお、放送受信装置１０は、アナログ放送受信部１１及びデジタル放送受信部１６の両方を備える構成であってもよい。この構成の場合、最適化処理部１２は、アナログ放送受信部１１の制御情報及びデジタル放送受信部１６の制御情報のそれぞれについて、別々に最適化処理を行えばよい。 The broadcast receiving apparatus 10 may be configured to include both the analog broadcast receiving unit 11 and the digital broadcast receiving unit 16. In the case of this configuration, the optimization processing unit 12 may perform optimization processing separately for each of the control information of the analog broadcast receiving unit 11 and the control information of the digital broadcast receiving unit 16.
実施の形態２．
　図７は、実施の形態２に係る放送受信装置１０の構成例を示すブロック図である。実施の形態２に係る放送受信装置１０は、図１に示された実施の形態１の放送受信装置１０に対して制御情報記憶部２０、状況判別部２１、及び番組楽曲判定部２２が追加された構成である。また、車両１には、高精度ロケータ２、自車位置判別部３、車外カメラ４、周辺状況判別部５、車内カメラ６、搭乗者判別部７、及び通信装置８が設置されている。車両１の外部には、サーバ装置３０が存在する。図７において、図１及び図２と同一又は相当する部分は、同一の符号を付し説明を省略する。 Embodiment 2.
FIG. 7 is a block diagram showing a configuration example of the broadcast receiving device 10 according to the second embodiment. The broadcast receiving apparatus 10 according to the second embodiment is different from the broadcast receiving apparatus 10 according to the first embodiment shown in FIG. 1 in that a control information storage unit 20, a situation determination unit 21, and a program music determination unit 22 are added. It has a different structure. Further, the vehicle 1 is provided with a high-accuracy locator 2, a vehicle position discriminating unit 3, a vehicle outside camera 4, a surrounding situation discriminating unit 5, an in-vehicle camera 6, an occupant discriminating unit 7, and a communication device 8. A server device 30 exists outside the vehicle 1. 7, parts that are the same as or correspond to those in FIGS. 1 and 2 are given the same reference numerals and description thereof is omitted.
　アナログ放送波のコンテンツは、ポップス、クラシック、又はトーク等である。例えばポップスの場合、高域まで信号があるため、ノイズ発生時にノイズ抑制部１１４によるハイカット制御の効果を大きくすると音質の広がりが失われるが、クラシック及びトーク等の場合、高域に信号がないため、ポップスに比べてハイカット制御の効果を大きくしたとしても音質への影響が少ない。このように、ハイカット制御のための制御情報は、コンテンツごとに異なるものを使用することが好ましい。また、「ノイズ除去よりも音質重視」か、「音質よりもノイズ除去重視」かといった聴感上の好みは、搭乗者によって異なる。そこで、実施の形態２に係る放送受信装置１０は、コンテンツ及び搭乗者等の状況に対応した制御情報を用いてアナログ放送波の受信動作を行うようにする。 -The content of analog broadcast waves is pop, classic, or talk. For example, in the case of pops, since there is a signal in the high frequency range, if the effect of high cut control by the noise suppression unit 114 is increased when noise occurs, the spread of sound quality is lost, but in the case of classical music and talk, there is no signal in the high frequency range. , Even if the effect of high-cut control is made larger than that of pop music, the effect on sound quality is small. As described above, it is preferable to use different control information for high-cut control for each content. The passengers have different audible preferences such as "sound quality is more important than noise removal" or "noise removal is more important than sound quality". Therefore, the broadcast receiving apparatus 10 according to the second embodiment performs the receiving operation of the analog broadcast wave by using the control information corresponding to the situation of the content and the passenger.
　高精度ロケータ２は、例えばＧＰＳ（Ｇｌｏｂａｌ　Ｐｏｓｉｔｉｏｎｉｎｇ　Ｓｙｓｔｅｍ）衛星からの信号を受信する。自車位置判別部３は、高精度ロケータ２が受信した信号を用いて、車両１の位置（例えば、緯度と経度）を判別する。自車位置判別部３は、判別した車両１の位置を示す情報（以下、「位置情報」と称する）を状況判別部２１へ出力する。 The high-precision locator 2 receives a signal from, for example, a GPS (Global Positioning System) satellite. The vehicle position discriminating unit 3 discriminates the position (for example, latitude and longitude) of the vehicle 1 using the signal received by the high precision locator 2. The host vehicle position determination unit 3 outputs information indicating the determined position of the vehicle 1 (hereinafter, referred to as “position information”) to the situation determination unit 21.
　車外カメラ４は、車両１の周辺を撮像する。車外カメラ４は、フロントカメラ、又はサイドカメラ等、１台以上のカメラである。周辺状況判別部５は、車外カメラ４が撮像した画像を用いて、車両１の周辺の状況を判別する。車両１の周辺の状況とは、例えば、車両１の周辺に存在するトラック等、電波環境に影響を及ぼす可能性がある障害物の有無である。周辺状況判別部５は、判別した車両１の周辺状況を示す情報（以下、「周辺状況情報」と称する）を状況判別部２１へ出力する。 The exterior camera 4 captures an image around the vehicle 1. The vehicle exterior camera 4 is one or more cameras such as a front camera or a side camera. The surrounding situation determination unit 5 uses the image captured by the vehicle exterior camera 4 to determine the surrounding situation of the vehicle 1. The situation around the vehicle 1 is, for example, the presence or absence of an obstacle such as a truck existing around the vehicle 1 that may affect the radio wave environment. The surrounding situation determination unit 5 outputs information indicating the determined surrounding situation of the vehicle 1 (hereinafter, referred to as “surrounding situation information”) to the situation determination unit 21.
　車内カメラ６は、車両１に搭乗している搭乗者を撮像する。車内カメラ６は、運転者の状態を監視するＤＭＳ（Ｄｒｉｖｅｒ　Ｍｏｎｉｔｏｒｉｎｇ　Ｓｙｓｔｅｍ）用のカメラ等、１台以上のカメラである。搭乗者判別部７は、予め登録されている搭乗者の画像と、車内カメラ６が撮像した画像とを比較し、車両１の搭乗者を判別する。搭乗者判別部７は、判別した搭乗者を示す情報（以下、「搭乗者情報」と称する）を状況判別部２１へ出力する。
　また、近年では、車両１の座席ごとにディスプレイとスピーカが設けられており、搭乗者ごとに異なるコンテンツを視聴することが可能になっている。その場合、搭乗者判別部７は、座席ごとに搭乗者を判別すればよい。 The in-vehicle camera 6 captures an image of an occupant in the vehicle 1. The in-vehicle camera 6 is one or more cameras, such as a DMS (Driver Monitoring System) camera for monitoring the driver's condition. The passenger determination unit 7 compares the image of the passenger registered in advance with the image captured by the in-vehicle camera 6, and determines the passenger of the vehicle 1. The passenger determination unit 7 outputs information indicating the determined passenger (hereinafter referred to as “passenger information”) to the situation determination unit 21.
Further, in recent years, a display and a speaker are provided for each seat of the vehicle 1, and it is possible to view different contents for each passenger. In that case, the passenger determination unit 7 may determine the passenger for each seat.
　通信装置８は、車両１の外部に存在するサーバ装置３０と、インターネットを介して通信する。通信装置８は、スマートフォン、又は携帯電話等であってもよいし、カーナビゲーション装置等が内蔵している通信装置であってもよい。サーバ装置３０は、例えば、放送中の番組内容、又は楽曲のジャンル等を示す情報（以下、「番組楽曲情報」と称する）を記憶している。通信装置８は、番組楽曲情報をインターネット上のサーバ装置３０から取得し、番組楽曲判定部２２へ出力する。番組楽曲判定部２２は、番組楽曲情報を用いて、アナログ放送受信部１１が受信中のアナログ放送波のコンテンツを判定する。番組楽曲判定部２２は、判定したコンテンツを状況判別部２１へ出力する。 The communication device 8 communicates with the server device 30 existing outside the vehicle 1 via the Internet. The communication device 8 may be a smartphone, a mobile phone, or the like, or may be a communication device built in a car navigation device or the like. The server device 30 stores, for example, information indicating the content of the program being broadcast or the genre of the music (hereinafter referred to as “program music information”). The communication device 8 acquires the program song information from the server device 30 on the Internet and outputs it to the program song determination unit 22. The program song determination section 22 determines the content of the analog broadcast wave being received by the analog broadcast receiving section 11 using the program song information. The program music determination section 22 outputs the determined content to the situation determination section 21.
　番組楽曲判定部２２は、コンテンツの代わりに、フーリエ変換部１５からのＦＦＴ結果を用いて、アナログ放送受信部１１が受信中のアナログ放送波の周波数特性を判定してもよい。番組楽曲判定部２２は、判定した周波数特性を状況判別部２１へ出力する。 The program music determination unit 22 may use the FFT result from the Fourier transform unit 15 instead of the content to determine the frequency characteristic of the analog broadcast wave being received by the analog broadcast reception unit 11. The program music determination section 22 outputs the determined frequency characteristic to the situation determination section 21.
　状況判別部２１は、自車位置判別部３からの位置情報、周辺状況判別部５からの周辺状況情報、搭乗者判別部７からの搭乗者情報、又は、番組楽曲判定部２２からのコンテンツ、若しくは周波数特性のうちの少なくとも１つを用いて、現在の状況を判別する。また、状況判別部２１は、現在の状況に、車両１の車種情報を加えてもよい。状況判別部２１は、判別した現在の状況を最適化処理部１２へ出力する。また、状況判別部２１は、判別した現在の状況を制御情報記憶部２０に記憶させてもよい。 The situation determination unit 21 includes the position information from the vehicle position determination unit 3, the surrounding situation information from the surrounding situation determination unit 5, the passenger information from the passenger determination unit 7, or the content from the program song determination unit 22, Alternatively, the current situation is determined using at least one of the frequency characteristics. In addition, the situation determination unit 21 may add the vehicle type information of the vehicle 1 to the current situation. The situation determination unit 21 outputs the determined current situation to the optimization processing unit 12. In addition, the situation determination unit 21 may store the determined current situation in the control information storage unit 20.
　最適化処理部１２は、状況判別部２１により判別された現在の状況に合うように制御情報を更新し、更新した制御情報を受信動作制御部１３へ出力する。また、最適化処理部１２は、更新した制御情報を、その更新に用いた受信条件、状況、及び受信性能結果と対応付けて制御情報記憶部２０に記憶させてもよい。最適化処理部１２は、状況ごとの制御情報を更新して制御情報記憶部２０に記憶させた場合、その後、状況に対応する制御情報を読み出して受信動作制御部１３へ出力してもよい。
　また、放送受信装置１０のメーカ等が制御情報記憶部２０に対して、状況ごとの制御情報を予め記憶させておいた場合、最適化処理部１２は、状況判別部２１により判別された現在の状況と同一又は類似する状況とその制御情報とを読み出して、受信動作制御部１３へ出力してもよい。 The optimization processing unit 12 updates the control information so as to match the current situation determined by the situation determination unit 21, and outputs the updated control information to the reception operation control unit 13. Further, the optimization processing unit 12 may store the updated control information in the control information storage unit 20 in association with the reception condition, the situation, and the reception performance result used for the update. When updating the control information for each situation and storing it in the control information storage unit 20, the optimization processing unit 12 may read the control information corresponding to the situation and output it to the reception operation control unit 13.
In addition, when the manufacturer of the broadcast receiving apparatus 10 stores the control information for each situation in the control information storage unit 20 in advance, the optimization processing unit 12 determines the current status determined by the situation determination unit 21. The situation that is the same as or similar to the situation and its control information may be read and output to the reception operation control unit 13.
　受信動作制御部１３は、最適化処理部１２により更新された制御情報をアナログ放送受信部１１に対して設定する。 The reception operation control unit 13 sets the control information updated by the optimization processing unit 12 in the analog broadcast reception unit 11.
　図８は、実施の形態２に係る放送受信装置１０において使用される各種情報の例を示す図である。図８の例では、制御情報記憶部２０には、アナログ放送受信部１１が出力した受信条件として、アナログ放送受信部１１が受信中の周波数、受信電力、及びマルチパスが記憶されている。また、状況判別部２１により判別された状況として、位置、コンテンツ、車種、及び搭乗者が記憶されている。また、アナログ放送受信部１１が出力した受信性能結果として、ＳＮが記憶されている。 FIG. 8 is a diagram showing an example of various information used in the broadcast receiving device 10 according to the second embodiment. In the example of FIG. 8, the control information storage unit 20 stores, as the reception conditions output by the analog broadcast receiving unit 11, the frequency being received by the analog broadcast receiving unit 11, the received power, and the multipath. The position, content, vehicle type, and passenger are stored as the situation determined by the situation determination unit 21. Further, SN is stored as the reception performance result output by the analog broadcast receiving unit 11.
　また、制御情報記憶部２０には、搭乗者の好みに対応する制御情報が予め記憶されている、例えば、「ノイズ除去よりも音質重視」の搭乗者に対しては、ハイカット制御の効果が小さくなるような制御情報が予め記憶されている。一方、「音質よりもノイズ除去重視」の搭乗者に対しては、ハイカット制御の効果が大きくなるような制御情報が予め記憶されている。 Further, the control information storage unit 20 stores in advance control information corresponding to the preference of the passenger. For example, the effect of the high-cut control is small for a passenger who "emphasizes sound quality rather than noise removal". Such control information is stored in advance. On the other hand, control information for increasing the effect of high-cut control is stored in advance for passengers who emphasize "noise removal rather than sound quality".
　図９は、実施の形態２に係る放送受信装置１０の動作例を示すフローチャートである。放送受信装置１０は、例えば、車両１のアクセサリ電源がオンになると図９のフローチャートに示される動作を開始し、アクセサリ電源がオフになると動作を終了する。
　なお、車両１の座席ごとにディスプレイとスピーカが設けられている場合、放送受信装置１０は、図９のフローチャートに示される動作を座席ごとに行えばよい。 FIG. 9 is a flowchart showing an operation example of the broadcast receiving device 10 according to the second embodiment. The broadcast receiving apparatus 10 starts the operation shown in the flowchart of FIG. 9 when the accessory power supply of the vehicle 1 is turned on, and ends the operation when the accessory power supply is turned off, for example.
When a display and a speaker are provided for each seat of the vehicle 1, the broadcast receiving device 10 may perform the operation shown in the flowchart of FIG. 9 for each seat.
　ステップＳＴ２１において、状況判別部２１は、搭乗者判別部７が判別した搭乗者に対応する制御情報を制御情報記憶部２０から読み出し、最適化処理部１２へ出力する。最適化処理部１２は、この制御情報を受信動作制御部１３へ出力する。受信動作制御部１３は、この制御情報をアナログ放送受信部１１に対して設定する。アナログ放送受信部１１は、この制御情報に従い、アナログ放送波の受信動作を行う。これにより、放送受信装置１０は、搭乗者の好みに合わせた受信動作を実施することができる。 In step ST21, the situation determination unit 21 reads the control information corresponding to the passenger determined by the passenger determination unit 7 from the control information storage unit 20 and outputs it to the optimization processing unit 12. The optimization processing unit 12 outputs this control information to the reception operation control unit 13. The reception operation control unit 13 sets this control information in the analog broadcast reception unit 11. The analog broadcast receiving unit 11 performs an operation of receiving an analog broadcast wave according to this control information. Thereby, the broadcast receiving apparatus 10 can perform the receiving operation according to the passenger's preference.
　ステップＳＴ２２において、状況判別部２１は、番組楽曲判定部２２からのコンテンツ又は周波数特性の判定結果に基づき、アナログ放送受信部１１が受信中のアナログ放送波のコンテンツ又は周波数特性が変化したか否かを判定する。コンテンツ又は周波数特性が変化した場合（ステップＳＴ２２“ＹＥＳ”）、最適化処理部１２は、変化後のコンテンツ又は周波数特性に合わせて制御情報を更新し、更新した制御情報を受信動作制御部１３を介してアナログ放送受信部１１へ出力する（ステップＳＴ２３）。一方、コンテンツ及び周波数特性が変化していない場合（ステップＳＴ２２“ＮＯ“）、処理はステップＳＴ２４へ進む。 In step ST22, the situation determination unit 21 determines whether the content or frequency characteristic of the analog broadcast wave being received by the analog broadcast reception unit 11 has changed, based on the determination result of the content or frequency characteristic from the program music determination unit 22. To judge. When the content or the frequency characteristic has changed (step ST22 “YES”), the optimization processing unit 12 updates the control information according to the changed content or the frequency characteristic, and causes the reception operation control unit 13 to update the updated control information. The signal is output to the analog broadcast receiving unit 11 via (step ST23). On the other hand, if the content and frequency characteristics have not changed (step ST22 “NO”), the process proceeds to step ST24.
　ステップＳＴ２３において、最適化処理部１２は、変化後のコンテンツ又は周波数特性と同一又は類似するコンテンツ又は周波数特性に対応する制御情報が制御情報記憶部２０に記憶されている場合、同一又は類似するコンテンツ又は周波数特性に対応する制御情報を制御情報記憶部２０から読み出してもよい。制御情報記憶部２０に記憶されている制御情報は、過去に最適化処理部１２が学習して記憶させたものであってもよいし、放送受信装置１０のメーカ等が制御情報記憶部２０に対して予め設定したものであってもよい。また、最適化処理部１２は、実施の形態１と同様に、アナログ放送受信部１１からの受信条件と受信性能結果とに基づいて、変化後のコンテンツ又は周波数特性に対する制御情報を学習してもよい。例えば、最適化処理部１２は、高域の信号があるポップス等のコンテンツに対しては、ハイカット制御の効果が小さくなるように制御情報を更新する。一方、最適化処理部１２は、高域の信号がないクラシック等のコンテンツに対しては、ハイカット制御の効果が大きくなるように制御情報を更新する。これにより、放送受信装置１０は、コンテンツ又は周波数特性に合わせた受信動作を実施することができる。 In step ST23, when the control information storage unit 20 stores the control information corresponding to the content or the frequency characteristic that is the same or similar to the changed content or the frequency characteristic, the optimization processing unit 12 determines the same or similar content. Alternatively, the control information corresponding to the frequency characteristic may be read from the control information storage unit 20. The control information stored in the control information storage unit 20 may be information learned and stored by the optimization processing unit 12 in the past, or the manufacturer of the broadcast receiving apparatus 10 may store the control information in the control information storage unit 20. Alternatively, it may be preset. Further, as in the first embodiment, the optimization processing unit 12 may learn control information for the changed content or frequency characteristic based on the reception condition and the reception performance result from the analog broadcast receiving unit 11. Good. For example, the optimization processing unit 12 updates the control information so that the effect of high-cut control is small for contents such as pops having a high-frequency signal. On the other hand, the optimization processing unit 12 updates the control information so that the effect of the high cut control becomes large with respect to the content such as classical music having no high frequency signal. As a result, the broadcast receiving device 10 can perform the receiving operation according to the content or the frequency characteristic.
　ステップＳＴ２４において、状況判別部２１は、自車位置判別部３からの位置情報に基づき、現在位置が電波特異場所か否かを判定する。車両１の位置が電波特異環境であるか否かは、制御情報記憶部２０に記憶されている、過去に車両１が走行したことのある位置とその位置での受信条件とに基づいて判別される。例えば、状況判別部２１は、ある位置でのみ極端に受信電力が低くなっている、又はマルチパスが増えている場合、その位置を電波特異場所と判定する。車両１の位置が電波特異場所である場合（ステップＳＴ２４“ＹＥＳ”）、最適化処理部１２は、電波特異場所に合わせて制御情報を更新し、更新した制御情報を受信動作制御部１３を介してアナログ放送受信部１１へ出力する（ステップＳＴ２５）。一方、車両１の位置が電波特異場所でない場合（ステップＳＴ２４“ＮＯ”）、処理はステップＳＴ２６へ進む。 In step ST24, the situation determination unit 21 determines whether or not the current position is a radio wave peculiar place based on the position information from the vehicle position determination unit 3. Whether or not the position of the vehicle 1 is in the radio wave peculiar environment is determined based on the position where the vehicle 1 has traveled in the past and the reception condition at that position, which is stored in the control information storage unit 20. R. For example, when the received power is extremely low only at a certain position or the number of multipaths is increased, the situation determination unit 21 determines that position as a radio wave peculiar place. When the position of the vehicle 1 is a radio wave peculiar place (step ST24 “YES”), the optimization processing unit 12 updates the control information according to the radio wave peculiar place, and the updated control information is received via the reception operation control unit 13. And outputs to the analog broadcast receiving unit 11 (step ST25). On the other hand, when the position of the vehicle 1 is not the radio wave peculiar place (step ST24 “NO”), the process proceeds to step ST26.
　ステップＳＴ２５において、最適化処理部１２は、現在の電波特異場所の受信条件と同一又は類似する受信条件に対応する制御情報が制御情報記憶部２０に記憶されている場合、同一又は類似する受信条件に対応する制御情報を制御情報記憶部２０から読み出してもよい。制御情報記憶部２０に記憶されている制御情報は、過去に最適化処理部１２が学習して記憶させたものであってもよいし、放送受信装置１０のメーカ等が制御情報記憶部２０に対して予め設定したものであってもよい。また、最適化処理部１２は、実施の形態１と同様に、アナログ放送受信部１１からの受信条件と受信性能結果とに基づいて、電波特異場所に対する制御情報を学習してもよい。これにより、放送受信装置１０は、電波特異場所を車両１が走行するときの一時的な受信劣化を改善することができる。 In step ST25, if the control information corresponding to the reception condition that is the same as or similar to the current reception condition of the radio wave peculiar place is stored in the control information storage unit 20, the optimization processing unit 12 determines the same or similar reception condition. The control information corresponding to may be read from the control information storage unit 20. The control information stored in the control information storage unit 20 may be information learned and stored by the optimization processing unit 12 in the past, or the manufacturer of the broadcast receiving apparatus 10 may store the control information in the control information storage unit 20. Alternatively, it may be preset. Further, as in the first embodiment, the optimization processing unit 12 may learn the control information for the radio wave peculiar place based on the reception condition and the reception performance result from the analog broadcast receiving unit 11. As a result, the broadcast receiving apparatus 10 can improve temporary reception deterioration when the vehicle 1 travels in a radio wave unique place.
　なお、電波特異場所が小さい場合、電波特異場所で制御情報を更新したとしてもその後すぐに通常の電波状況に戻り、制御情報も通常の制御情報に戻る。このような場合、最適化処理部１２は、ステップＳＴ２５において制御情報の更新を行わなくてもよい。制御情報を更新するか継続するかの目安となる電波特異場所の大きさに関する情報は、最適化処理部１２又は制御情報記憶部２０に対して予め定められていればよい。また、電波特異場所の大きさに関する情報は、搭乗者ごとに異なってもよい。これにより、放送受信装置１０は、制御情報の頻繁な更新に起因した聴感上の違和感を抑制することができる。 Note that if the radio wave peculiar place is small, even if the control information is updated at the radio wave peculiar place, the normal radio wave condition is returned immediately thereafter, and the control information is also returned to the normal control information. In such a case, the optimization processing unit 12 does not have to update the control information in step ST25. The information about the size of the radio wave peculiar place, which is a standard for updating or continuing the control information, may be predetermined in the optimization processing unit 12 or the control information storage unit 20. Further, the information regarding the size of the radio wave peculiar place may be different for each passenger. As a result, the broadcast receiving device 10 can suppress a feeling of strangeness in hearing caused by the frequent update of the control information.
　ステップＳＴ２６において、状況判別部２１は、周辺状況判別部５からの周辺状況情報に基づき、車両１の周辺にトラック等の障害物が存在するか否かを判定する。車両１の周辺に障害物が存在する場合（ステップＳＴ２６“ＹＥＳ”）、最適化処理部１２は、障害物に合わせて制御情報を更新し、更新した制御情報を受信動作制御部１３を介してアナログ放送受信部１１へ出力する（ステップＳＴ２７）。一方、車両１の周辺に障害物が存在しない場合（ステップＳＴ２６“ＮＯ”）、処理はステップＳＴ２８へ進む。 In step ST26, the situation determination unit 21 determines whether or not an obstacle such as a truck exists around the vehicle 1 based on the surrounding situation information from the surrounding situation determination unit 5. When there is an obstacle around the vehicle 1 (step ST26 “YES”), the optimization processing unit 12 updates the control information according to the obstacle, and updates the updated control information via the reception operation control unit 13. The signal is output to the analog broadcast receiving unit 11 (step ST27). On the other hand, when there is no obstacle around the vehicle 1 (step ST26 “NO”), the process proceeds to step ST28.
　ステップＳＴ２７において、最適化処理部１２は、車両１の周辺に存在する障害物と同一又は類似する障害物に対する制御情報が制御情報記憶部２０に記憶されている場合、同一又は類似する障害物に対応する制御情報を制御情報記憶部２０から読み出してもよい。制御情報記憶部２０に記憶されている制御情報は、過去に最適化処理部１２が学習して記憶させたものであってもよいし、放送受信装置１０のメーカ等が制御情報記憶部２０に対して予め設定したものであってもよい。また、最適化処理部１２は、実施の形態１と同様に、アナログ放送受信部１１からの受信条件と受信性能結果とに基づいて、障害物に対する制御情報を学習してもよい。これにより、放送受信装置１０は、車両１の周辺をトラック等の障害物が走行するときの、トラック等からの外的要因ノイズに起因した一時的な受信劣化を改善することができる。 In step ST27, when the control information storage unit 20 stores control information for an obstacle that is the same as or similar to an obstacle existing around the vehicle 1, the optimization processing unit 12 determines that the obstacle is the same or similar. The corresponding control information may be read from the control information storage unit 20. The control information stored in the control information storage unit 20 may be information learned and stored by the optimization processing unit 12 in the past, or the manufacturer of the broadcast receiving apparatus 10 may store the control information in the control information storage unit 20. Alternatively, it may be preset. Further, the optimization processing unit 12 may learn the control information for the obstacle based on the reception condition from the analog broadcast receiving unit 11 and the reception performance result, as in the first embodiment. As a result, the broadcast receiving apparatus 10 can improve temporary reception deterioration due to external factor noise from the truck or the like when an obstacle such as the truck travels around the vehicle 1.
　なお、最適化処理部１２は、障害物と車両１との相対位置関係等によっては、ステップＳＴ２７において制御情報の更新を行わなくてもよい。例えば、障害物であるトラックと車両１とが並走しているような状況では、並走中ずっと受信劣化が起こると予想されるため、最適化処理部１２は、制御情報を更新する。一方、車両１がトラックを追い抜く、又はトラックが車両１を追い抜くような状況では、受信劣化が一瞬で終わると予想されるため、最適化処理部１２は、制御情報を更新しない。制御情報を更新するか継続するかの目安となる相対位置関係等に関する情報は、最適化処理部１２又は制御情報記憶部２０に対して予め定められていればよい。 The optimization processing unit 12 may not update the control information in step ST27 depending on the relative positional relationship between the obstacle and the vehicle 1. For example, in a situation where the truck, which is an obstacle, and the vehicle 1 are running side by side, it is expected that reception degradation will occur during the parallel running, so the optimization processing unit 12 updates the control information. On the other hand, in a situation where the vehicle 1 overtakes the truck or the truck overtakes the vehicle 1, the degradation of reception is expected to end in an instant, so the optimization processing unit 12 does not update the control information. The information on the relative positional relationship or the like, which is a guideline for updating or continuing the control information, may be set in advance in the optimization processing unit 12 or the control information storage unit 20.
　ステップＳＴ２８において、状況判別部２１は、搭乗者判別部７が判別した搭乗者が変化したか否か、つまり搭乗者の乗降があったか否かを判定する。搭乗者が変化した場合（ステップＳＴ２８“ＹＥＳ”）、処理はステップＳＴ２１へ戻る。搭乗者が変化していない場合（ステップＳＴ２８“ＮＯ”）、処理はステップＳＴ２２へ戻る。 In step ST28, the situation determination unit 21 determines whether or not the passenger determined by the passenger determination unit 7 has changed, that is, whether or not the passenger has been getting on or off. When the passenger has changed (step ST28 “YES”), the process returns to step ST21. When the passenger has not changed (step ST28 “NO”), the process returns to step ST22.
　なお、サーバ装置３０は、図８に示されるような各種情報と制御情報の対応関係を示す情報を、複数の車両に搭載されている放送受信装置１０から収集して蓄積する構成であってもよい。この場合、車両１の通信装置８は、制御情報記憶部２０に記憶されている制御情報等を読み出し、サーバ装置３０へ送信する。また、車両１の通信装置８は、他車の放送受信装置１０から収集された制御情報等をサーバ装置３０から取得し、車両１の制御情報記憶部２０に記憶させる。このとき、通信装置８は、車両１の車種と同一又は類似する他車の制御情報等を、サーバ装置３０から取得することが好ましい。車種は、放送波の受信環境に影響を及ぼすためである。この構成により、放送受信装置１０は、複数の車両間で制御情報を共有することができる。そのため、例えば、車両１が過去に走行したことのない場所であっても、電波特異場所であるか否かの判定が可能となる。
　なお、通信装置８は、車車間通信等により、他車から直接制御情報等を取得してもよい。 It should be noted that the server device 30 may be configured to collect and accumulate information indicating correspondence between various information and control information as shown in FIG. 8 from the broadcast receiving device 10 mounted on a plurality of vehicles. Good. In this case, the communication device 8 of the vehicle 1 reads the control information and the like stored in the control information storage unit 20 and transmits it to the server device 30. Further, the communication device 8 of the vehicle 1 acquires the control information and the like collected from the broadcast receiving device 10 of the other vehicle from the server device 30 and stores the control information in the control information storage unit 20 of the vehicle 1. At this time, it is preferable that the communication device 8 obtains control information of another vehicle that is the same as or similar to the vehicle type of the vehicle 1 from the server device 30. This is because the vehicle type affects the reception environment of broadcast waves. With this configuration, the broadcast receiving device 10 can share control information among a plurality of vehicles. Therefore, for example, even in a place where the vehicle 1 has never traveled in the past, it is possible to determine whether or not the place is a radio wave peculiar place.
Note that the communication device 8 may directly acquire control information or the like from another vehicle through inter-vehicle communication or the like.
　以上のように、実施の形態２に係る放送受信装置１０は、現在の状況を判別する状況判別部２１を備える。最適化処理部１２は、状況判別部２１により判別された状況が変化した場合、制御情報を更新する。これにより、放送受信装置１０は、状況の変化に合わせて随時受信動作を変化させることができる。 As described above, the broadcast receiving device 10 according to the second embodiment includes the situation determination unit 21 that determines the current situation. The optimization processing unit 12 updates the control information when the situation determined by the situation determination unit 21 changes. Thereby, the broadcast receiving apparatus 10 can change the receiving operation at any time according to the change of the situation.
　また、実施の形態２に係る放送受信装置１０は、インターネット上に存在する番組楽曲情報を用いて、アナログ放送受信部１１が受信中のアナログ放送波のコンテンツを判定する番組楽曲判定部２２を備える。状況判別部２１は、番組楽曲判定部２２により判定されたコンテンツが変化したか否かを判別する。最適化処理部１２は、状況判別部２１によりコンテンツが変化したと判別された場合、変化後のコンテンツに合わせて制御情報を更新する。これにより、放送受信装置１０は、リアルタイムで受信中のコンテンツを判別でき、また、そのコンテンツに適した制御情報へと更新することができる。また、放送受信装置１０は、そのコンテンツに適した制御情報へと更新することにより、聴感上の性能を向上させることができる。 Further, the broadcast receiving apparatus 10 according to the second embodiment includes a program song determining section 22 that determines the content of the analog broadcast wave being received by the analog broadcast receiving section 11 by using the program song information existing on the Internet. .. The situation determination unit 21 determines whether the content determined by the program music determination unit 22 has changed. When the situation determination unit 21 determines that the content has changed, the optimization processing unit 12 updates the control information according to the changed content. Thereby, the broadcast receiving apparatus 10 can determine the content being received in real time, and can update the control information suitable for the content. In addition, the broadcast receiving apparatus 10 can improve the audible performance by updating the control information suitable for the content.
　また、実施の形態２に係る放送受信装置１０は、アナログ放送受信部１１により受信されたアナログ放送波の信号をフーリエ変換するフーリエ変換部１５を備える。番組楽曲判定部２２は、フーリエ変換部１５のＦＦＴ結果に基づいてアナログ放送波の周波数特性を判定する。状況判別部２１は、番組楽曲判定部２２により判定された周波数特性が変化したか否かを判別する。最適化処理部１２は、状況判別部２１により周波数特性が変化したと判別された場合、変化後の周波数特性に合わせて制御情報を更新する。これにより、放送受信装置１０は、ＦＦＴ結果を用いて、コンテンツに相当する周波数特性を推定することができ、その周波数特性に適した制御情報へと更新することができる。また、放送受信装置１０は、その周波数特性に適した制御情報へと更新することにより、聴感上の性能を向上させることができる。 The broadcast receiving apparatus 10 according to the second embodiment also includes a Fourier transform unit 15 that performs a Fourier transform on the analog broadcast wave signal received by the analog broadcast receiving unit 11. The program music determination section 22 determines the frequency characteristic of the analog broadcast wave based on the FFT result of the Fourier transform section 15. The situation determination unit 21 determines whether the frequency characteristic determined by the program music determination unit 22 has changed. When the situation determination unit 21 determines that the frequency characteristic has changed, the optimization processing unit 12 updates the control information according to the changed frequency characteristic. Thereby, the broadcast receiving apparatus 10 can estimate the frequency characteristic corresponding to the content by using the FFT result, and can update the control information suitable for the frequency characteristic. In addition, the broadcast receiving apparatus 10 can improve the audible performance by updating the control information to be suitable for the frequency characteristic.
　また、実施の形態２に係る放送受信装置１０は、搭乗者ごとの制御情報を記憶している制御情報記憶部２０を備える。状況判別部２１は、車両１に搭乗している搭乗者に対応する制御情報を制御情報記憶部２０から選択する。最適化処理部１２は、状況判別部２１により判別された状況が変化した場合、状況判別部２１により選択された搭乗者に対応する制御情報を更新する。これにより、放送受信装置１０は、搭乗者の好みに合った制御情報を、受信動作に反映させることができる。また、放送受信装置１０は、搭乗者の好みに合った制御情報を、状況の変化に合わせて随時更新することができる。 The broadcast receiving device 10 according to the second embodiment also includes a control information storage unit 20 that stores control information for each passenger. The situation determination unit 21 selects, from the control information storage unit 20, the control information corresponding to the passenger riding in the vehicle 1. The optimization processing unit 12 updates the control information corresponding to the passenger selected by the situation determination unit 21 when the situation determined by the situation determination unit 21 changes. Thereby, the broadcast receiving apparatus 10 can reflect the control information that suits the passenger's preference in the receiving operation. In addition, the broadcast receiving device 10 can update the control information that suits the passenger's preference at any time according to the change in the situation.
　また、実施の形態２の状況判別部２１は、車両１の現在位置が特異な電波環境であるか否かを判別する。最適化処理部１２は、状況判別部２１により車両１の現在位置が特異な電波環境であると判別された場合、制御情報を更新する。これにより、放送受信装置１０は、電波環境が変化した場合でも最適な制御情報へと更新でき、受信性能を向上させることができる。 Further, the situation determination unit 21 of the second embodiment determines whether or not the current position of the vehicle 1 is a unique radio wave environment. The optimization processing unit 12 updates the control information when the situation determination unit 21 determines that the current position of the vehicle 1 is in a unique radio wave environment. As a result, the broadcast receiving apparatus 10 can update the optimum control information even when the radio wave environment changes, and can improve the reception performance.
　また、実施の形態２の状況判別部２１は、車両１の周辺に障害物が存在するか否かを判別する。最適化処理部１２は、状況判別部２１により車両１の周辺に障害物が存在すると判別された場合、制御情報を更新する。これにより、放送受信装置１０は、トラック等の障害物からの外的要因ノイズに対して最適な制御情報への更新が可能であり、受信性能を向上させることができる。 The situation determination unit 21 according to the second embodiment also determines whether or not an obstacle exists around the vehicle 1. The optimization processing unit 12 updates the control information when the situation determination unit 21 determines that an obstacle exists around the vehicle 1. As a result, the broadcast receiving apparatus 10 can update the control information to the optimum control information with respect to external factor noise from an obstacle such as a truck, and can improve the reception performance.
　なお、図７に示される放送受信装置１０は、アナログ放送波を受信する構成であったが、デジタル放送波を受信する構成であってもよい。その場合、図７に示される放送受信装置１０は、アナログ放送受信部１１とフーリエ変換部１５に代えて、図５及び図６に示されるデジタル放送受信部１６を備える。
　また、放送受信装置１０は、アナログ放送受信部１１及びデジタル放送受信部１６の両方を備える構成であってもよい。 It should be noted that the broadcast receiving apparatus 10 shown in FIG. 7 is configured to receive an analog broadcast wave, but it may be configured to receive a digital broadcast wave. In that case, the broadcast receiving apparatus 10 shown in FIG. 7 includes a digital broadcast receiving unit 16 shown in FIGS. 5 and 6 in place of the analog broadcast receiving unit 11 and the Fourier transform unit 15.
Further, the broadcast receiving device 10 may be configured to include both the analog broadcast receiving unit 11 and the digital broadcast receiving unit 16.
　放送受信装置１０がデジタル放送受信部１６を備える構成である場合、番組楽曲判定部２２は、通信装置８を介してサーバ装置３０から番組楽曲情報を取得する以外にも、デジタル放送受信部１６が受信中のデジタル放送波に含まれる番組楽曲情報を取得してもよい。 When the broadcast receiving device 10 is configured to include the digital broadcast receiving unit 16, the program song determining unit 22 acquires the program song information from the server device 30 via the communication device 8, and The program music information included in the digital broadcast wave being received may be acquired.
　図１０は、実施の形態２に係る放送受信装置１０がデジタルテレビ放送波を受信する構成である場合に使用される各種情報の例を示す図である。図１０の例では、制御情報記憶部２０には、デジタル放送受信部１６が出力した受信条件として、デジタル放送受信部１６が受信中のチャンネル（ＣＨ）、受信電力、ＰＥＲ、及びＣＮが記憶されている。また、状況判別部２１により判別された状況として、位置、コンテンツ、車種、及び搭乗者が記憶されている。また、デジタル放送受信部１６が出力した受信性能結果として、視聴状態が記憶されている。視聴状態は、デジタル放送受信部１６の復調部１６２が、ワンセグメント放送（以下、「ワンセグ」と称する）とフルセグメント放送（以下、「フルセグ」と称する）のどちらを出力しているかを示す。 FIG. 10 is a diagram showing an example of various information used when the broadcast receiving device 10 according to the second embodiment is configured to receive digital television broadcast waves. In the example of FIG. 10, the control information storage unit 20 stores the channel (CH) being received by the digital broadcast receiving unit 16, the received power, the PER, and the CN as the receiving conditions output by the digital broadcast receiving unit 16. ing. The position, content, vehicle type, and passenger are stored as the situation determined by the situation determination unit 21. In addition, the viewing state is stored as the reception performance result output by the digital broadcast receiving unit 16. The viewing state indicates whether the demodulation unit 162 of the digital broadcast reception unit 16 outputs one segment broadcast (hereinafter, referred to as “one segment”) or full segment broadcast (hereinafter, referred to as “full segment”).
　従来は、放送受信装置１０のメーカ等が、ＰＥＲ、及びＣＮ等に連動して変化するワンセグとフルセグの切り替え閾値を事前に決定し、制御情報としてデジタル放送受信部１６に設定している。また、従来の放送受信装置１０のなかには、ブロックノイズが発生してもフルセグを継続する「フルセグ優先モード」と、ブロックノイズが発生する前にフルセグからワンセグに切り替える「ワンセグ優先モード」とを、搭乗者に選択させるものもあった。しかしながら、ワンセグとフルセグとの切り替えは、番組内容によって、又は搭乗者によって好みが異なる。例えば、スポーツ番組の場合、ワンセグではスコア等の小さい文字が見えなくなるため、フルセグ視聴が好ましい。このようなデジタルテレビ放送に関してもアナログ放送と同様に、実施の形態２に係る放送受信装置１０は、制御情報の１つであるワンセグとフルセグの切り替え閾値を、搭乗者及びコンテンツに応じて更新することができる。例えば、最適化処理部１２は、「フルセグ優先モード」が予め設定されている搭乗者に対しては、ワンセグとフルセグとの切り替え閾値を、ワンセグに切り替わり難く、かつフルセグに切り替わりやすい値にする。また、最適化処理部１２は、番組楽曲判定部２２により判定されたコンテンツが、小さい文字を多く含むコンテンツ（例えば、スポーツ）である場合、ワンセグとフルセグとの切り替え閾値を、ワンセグに切り替わり難く、かつフルセグに切り替わりやすい値にする。 Conventionally, the manufacturer of the broadcast receiving apparatus 10 has previously determined a switching threshold between One Seg and Full Seg that changes in association with PER, CN, etc., and sets it in the digital broadcast receiving unit 16 as control information. In addition, in the conventional broadcast receiving device 10, there are a "Full Seg priority mode" that continues full segment even if block noise occurs, and a "one segment priority mode" that switches from full segment to 1 segment before block noise occurs. There were also things to let the person choose. However, switching between one-segment and full-segment has different preferences depending on the program content or passengers. For example, in the case of sports programs, full-segment viewing is preferable because small characters such as scores cannot be seen in 1-segment. Similar to the analog broadcasting, the broadcasting receiving apparatus 10 according to the second embodiment also updates the one-segment and full-segment switching thresholds, which is one of the control information, for such digital television broadcasting according to the passenger and the content. be able to. For example, the optimization processing unit 12 sets the switching threshold between 1Seg and FullSeg to a value for which it is difficult to switch to 1Seg and easy to switch to FullSeg for the passenger for whom the “FullSeg priority mode” is preset. Further, if the content determined by the program music determination section 22 is content including many small characters (for example, sports), the optimization processing section 12 is unlikely to switch the switching threshold between 1Seg and FullSeg to 1Seg. And set to a value that makes it easy to switch to Full Seg.
　また、トラックが車両１の周辺を通過した場合、一時的にブロックノイズが発生することがある。デジタルテレビ放送波の長遅延等に起因して、特定場所でだけ、一時的にブロックノイズが発生することもある。このような一時的なブロックノイズ発生時、デジタル放送受信部１６は、フルセグからワンセグに切り替えたとしても、すぐにブロックノイズが解消するのでワンセグからフルセグに戻すことになる。この場合、例えば、最適化処理部１２は、「フルセグ優先モード」が予め設定されている搭乗者に対しては、ワンセグとフルセグとの切り替え閾値を、ワンセグに切り替わり難く、かつフルセグに切り替わりやすい値にする。また、例えば、最適化処理部１２は、状況判別部２１により車両１の現在位置が電波特異場所であると判別された場合、電波特異場所の大きさによっては、フルセグからワンセグに切り替わらないような閾値にしてもよい。これにより、放送受信装置１０は、ワンセグとフルセグの頻繁な切り替えに起因した視聴し難さを抑制することができる。 Also, if a truck passes around the vehicle 1, block noise may occur temporarily. Block noise may occur temporarily only in a specific place due to long delay of digital television broadcast waves. When such a temporary block noise occurs, even if the digital broadcast receiving unit 16 switches from Full Seg to One Seg, the block noise is immediately eliminated and the digital broadcast receiving unit 16 returns from One Seg to Full Seg. In this case, for example, the optimization processing unit 12 may set the switching threshold between 1Seg and FullSeg to a passenger for which the “FullSeg priority mode” is set in advance, a value that is difficult to switch to 1Seg and that is easy to switch to FullSeg. To Further, for example, when the situation determination unit 21 determines that the current position of the vehicle 1 is a radio wave peculiar place, the optimization processing unit 12 may not switch from Full Seg to One Seg depending on the size of the radio wave peculiar place. It may be a threshold value. As a result, the broadcast receiving device 10 can suppress the difficulty in viewing due to the frequent switching between one-segment and full-segment.
　最後に、各実施の形態に係る放送受信装置１０のハードウェア構成を説明する。
　図１１及び図１２は、各実施の形態に係る放送受信装置１０のハードウェア構成例を示す図である。放送受信装置１０における制御情報記憶部２０は、処理回路１００の内蔵メモリ（不図示）、又はメモリ１０２である。放送受信装置１０におけるアナログ放送受信部１１、デジタル放送受信部１６、最適化処理部１２、受信動作制御部１３、フーリエ変換部１５、状況判別部２１、及び番組楽曲判定部２２の機能は、処理回路により実現される。処理回路は、専用のハードウェアとしての処理回路１００であってもよいし、メモリ１０２に格納されるプログラムを実行するプロセッサ１０１であってもよい。 Finally, the hardware configuration of the broadcast receiving device 10 according to each embodiment will be described.
11 and 12 are diagrams showing a hardware configuration example of the broadcast receiving device 10 according to each embodiment. The control information storage unit 20 in the broadcast receiving device 10 is a built-in memory (not shown) of the processing circuit 100 or the memory 102. The functions of the analog broadcast receiving unit 11, the digital broadcast receiving unit 16, the optimization processing unit 12, the receiving operation control unit 13, the Fourier transforming unit 15, the situation determining unit 21, and the program music determining unit 22 in the broadcast receiving apparatus 10 are processing. It is realized by a circuit. The processing circuit may be the processing circuit 100 as dedicated hardware, or the processor 101 that executes the program stored in the memory 102.
　図１１に示されるように、処理回路が専用のハードウェアである場合、処理回路１００は、例えば、単一回路、複合回路、プログラム化したプロセッサ、並列プログラム化したプロセッサ、ＡＳＩＣ（Ａｐｐｌｉｃａｔｉｏｎ　Ｓｐｅｃｉｆｉｃ　Ｉｎｔｅｇｒａｔｅｄ　Ｃｉｒｃｕｉｔ）、ＦＰＧＡ（Ｆｉｅｌｄ　Ｐｒｏｇｒａｍｍａｂｌｅ　Ｇａｔｅ　Ａｒｒａｙ）、又はこれらを組み合わせたものが該当する。アナログ放送受信部１１、デジタル放送受信部１６、最適化処理部１２、受信動作制御部１３、フーリエ変換部１５、状況判別部２１、及び番組楽曲判定部２２の機能を複数の処理回路１００で実現してもよいし、各部の機能をまとめて１つの処理回路１００で実現してもよい。例えば、図１１のように、アナログ放送受信部１１及びデジタル放送受信部１６の機能を、受信回路１０３により実現してもよい。 As shown in FIG. 11, when the processing circuit is dedicated hardware, the processing circuit 100 includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, and an ASIC (Application Specific Integrated Circuit). ), FPGA (Field Programmable Gate Array), or a combination thereof. The functions of the analog broadcast reception unit 11, the digital broadcast reception unit 16, the optimization processing unit 12, the reception operation control unit 13, the Fourier transform unit 15, the situation determination unit 21, and the program music determination unit 22 are realized by a plurality of processing circuits 100. Alternatively, the functions of the respective units may be combined and implemented by one processing circuit 100. For example, as shown in FIG. 11, the functions of the analog broadcast receiving unit 11 and the digital broadcast receiving unit 16 may be realized by the receiving circuit 103.
　図１２に示されるように、処理回路がプロセッサ１０１である場合、アナログ放送受信部１１、デジタル放送受信部１６、最適化処理部１２、受信動作制御部１３、フーリエ変換部１５、状況判別部２１、及び番組楽曲判定部２２の機能は、ソフトウェア、ファームウェア、又はソフトウェアとファームウェアとの組み合わせにより実現される。ソフトウェア又はファームウェアはプログラムとして記述され、メモリ１０２に格納される。プロセッサ１０１は、メモリ１０２に格納されたプログラムを読みだして実行することにより、各部の機能を実現する。即ち、放送受信装置１０は、プロセッサ１０１により実行されるときに、図３等のフローチャートで示されるステップが結果的に実行されることになるプログラムを格納するためのメモリ１０２を備える。また、このプログラムは、アナログ放送受信部１１、デジタル放送受信部１６、最適化処理部１２、受信動作制御部１３、フーリエ変換部１５、状況判別部２１、及び番組楽曲判定部２２の手順又は方法をコンピュータに実行させるものであるとも言える。 As shown in FIG. 12, when the processing circuit is the processor 101, the analog broadcast receiving unit 11, the digital broadcast receiving unit 16, the optimization processing unit 12, the reception operation control unit 13, the Fourier transform unit 15, and the situation determination unit 21. , And the function of the program music determination section 22 are realized by software, firmware, or a combination of software and firmware. The software or firmware is described as a program and stored in the memory 102. The processor 101 realizes the function of each unit by reading and executing the program stored in the memory 102. That is, the broadcast receiving apparatus 10 includes a memory 102 for storing a program that, when executed by the processor 101, results in the steps shown in the flowchart of FIG. 3 and the like being executed. Further, this program is a procedure or method of the analog broadcast receiving unit 11, the digital broadcast receiving unit 16, the optimization processing unit 12, the receiving operation control unit 13, the Fourier transform unit 15, the situation determination unit 21, and the program music determination unit 22. It can be said that it makes a computer execute.
　ここで、プロセッサ１０１とは、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）、処理装置、演算装置、又はマイクロプロセッサ等のことである。
　メモリ１０２は、ＲＡＭ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ）、ＲＯＭ（Ｒｅａｄ　Ｏｎｌｙ　Ｍｅｍｏｒｙ）、ＥＰＲＯＭ（Ｅｒａｓａｂｌｅ　Ｐｒｏｇｒａｍｍａｂｌｅ　ＲＯＭ）、又はフラッシュメモリ等の不揮発性もしくは揮発性の半導体メモリであってもよいし、ハードディスク又はフレキシブルディスク等の磁気ディスクであってもよいし、ＣＤ（Ｃｏｍｐａｃｔ　Ｄｉｓｃ）又はＤＶＤ（Ｄｉｇｉｔａｌ　Ｖｅｒｓａｔｉｌｅ　Ｄｉｓｃ）等の光ディスクであってもよい。 Here, the processor 101 is a CPU (Central Processing Unit), a processing device, a computing device, a microprocessor, or the like.
The memory 102 may be a RAM (Random Access Memory), a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), or a non-volatile or volatile semiconductor memory such as a flash memory, a hard disk, a flexible disk, or the like. Magnetic disk, or an optical disk such as a CD (Compact Disc) or a DVD (Digital Versatile Disc).
　なお、アナログ放送受信部１１、デジタル放送受信部１６、最適化処理部１２、受信動作制御部１３、フーリエ変換部１５、状況判別部２１、及び番組楽曲判定部２２の機能について、一部を専用のハードウェアで実現し、一部をソフトウェア又はファームウェアで実現するようにしてもよい。このように、放送受信装置１０における処理回路は、ハードウェア、ソフトウェア、ファームウェア、又はこれらの組み合わせによって、上述の機能を実現することができる。 Part of the functions of the analog broadcast receiving unit 11, the digital broadcast receiving unit 16, the optimization processing unit 12, the receiving operation control unit 13, the Fourier transform unit 15, the situation determination unit 21, and the program music determination unit 22 are dedicated. It may be realized by hardware and part of it may be realized by software or firmware. As described above, the processing circuit in the broadcast receiving device 10 can realize the above-described functions by hardware, software, firmware, or a combination thereof.
　なお、本発明はその発明の範囲内において、各実施の形態の自由な組み合わせ、各実施の形態の任意の構成要素の変形、又は各実施の形態の任意の構成要素の省略が可能である。 Note that, in the present invention, within the scope of the invention, it is possible to freely combine each embodiment, modify any constituent element of each embodiment, or omit any constituent element of each embodiment.
　この発明に係る放送受信装置は、制御係数を学習するようにしたので、電波環境が時々刻々と変化する車両等の放送受信装置に用いるのに適している。 Since the broadcast receiving device according to the present invention learns the control coefficient, it is suitable for use in a broadcast receiving device such as a vehicle in which the radio wave environment changes momentarily.
　１　車両、２　高精度ロケータ、３　自車位置判別部、４　車外カメラ、５　周辺状況判別部、６　車内カメラ、７　搭乗者判別部、８　通信装置、１０　放送受信装置、１１　アナログ放送受信部（受信部）、１２　最適化処理部、１３　受信動作制御部、１５，１６４　フーリエ変換部、１６　デジタル放送受信部（受信部）、２０　制御情報記憶部、２１　状況判別部、２２　番組楽曲判定部、３０　サーバ装置、１１１，１６１　チューナ部、１１２，１６２　復調部、１１３，１６３　ＡＤ変換部、１１４　ノイズ抑制部、１１５，１６６　受信状況検出部、１６５　ＯＦＤＭ復調部、１００　処理回路、１０１　プロセッサ、１０２　メモリ、１０３　受信回路。 1 vehicle, 2 high-accuracy locator, 3 own vehicle position determination unit, 4 outside camera, 5 surrounding condition determination unit, 6 in-vehicle camera, 7 passenger determination unit, 8 communication device, 10 broadcast receiving device, 11 analog broadcast receiving unit ( Receiving section), 12 optimization processing section, 13 receiving operation control section, 15,164 Fourier transform section, 16 digital broadcast receiving section (receiving section), 20 control information storage section, 21 status determination section, 22 program song determination section, 30 server device, 111, 161, tuner unit, 112, 162 demodulation unit, 113, 163 AD conversion unit, 114 noise suppression unit, 115, 166 reception status detection unit, 165 OFDM demodulation unit, 100 processing circuit, 101 processor, 102 memory , 103 receiver circuit.

Claims (8)

  1. 　車両に搭載される放送受信装置であって、
    　制御情報を用いて放送波の受信動作を行い、前記放送波の受信条件及び前記受信動作の受信性能結果を出力する受信部と、
    　前記受信条件に対する前記制御情報と前記受信性能結果との関係を学習して前記制御情報を更新する最適化処理部と、
    　前記最適化処理部により更新された前記制御情報を前記受信部に対して設定する受信動作制御部とを備えることを特徴とする放送受信装置。     A broadcast receiving device mounted on a vehicle,
    A receiving unit that performs a reception operation of a broadcast wave using control information, and outputs a reception condition of the broadcast wave and a reception performance result of the reception operation,
    An optimization processing unit that updates the control information by learning the relationship between the control information and the reception performance result for the reception condition;
    A broadcast receiving apparatus, comprising: a reception operation control unit that sets the control information updated by the optimization processing unit to the reception unit.
  2. 　現在の状況を判別する状況判別部を備え、
    　前記最適化処理部は、前記状況判別部により判別された状況が変化した場合、前記制御情報を更新することを特徴とする請求項１記載の放送受信装置。     Equipped with a status determination unit that determines the current status,
    The broadcast receiving apparatus according to claim 1, wherein the optimization processing unit updates the control information when the situation determined by the situation determination unit changes.
  3. 　インターネット上に存在する、又は前記受信部が受信中の放送波に含まれる番組楽曲情報を用いて、前記受信部が受信中の放送波のコンテンツを判定する番組楽曲判定部を備え、
    　前記状況判別部は、前記番組楽曲判定部により判定されたコンテンツが変化したか否かを判別し、
    　前記最適化処理部は、前記状況判別部によりコンテンツが変化したと判別された場合、変化後のコンテンツに合わせて前記制御情報を更新することを特徴とする請求項２記載の放送受信装置。     A program music determination unit that determines the content of the broadcast wave being received by the reception unit by using program music information existing on the Internet or included in the broadcast wave being received by the reception unit,
    The situation determination unit determines whether the content determined by the program music determination unit has changed,
    The broadcast receiving apparatus according to claim 2, wherein, when the situation determination unit determines that the content has changed, the optimization processing unit updates the control information according to the changed content.
  4. 　前記受信部により受信された前記放送波の信号をフーリエ変換するフーリエ変換部を備え、
    　前記番組楽曲判定部は、前記フーリエ変換部のフーリエ変換結果に基づいて前記放送波の周波数特性を判定し、
    　前記状況判別部は、前記番組楽曲判定部により判定された周波数特性が変化したか否かを判別し、
    　前記最適化処理部は、前記状況判別部により周波数特性が変化したと判別された場合、変化後の周波数特性に合わせて前記制御情報を更新することを特徴とする請求項３記載の放送受信装置。     A Fourier transform unit for Fourier transforming the broadcast wave signal received by the receiving unit,
    The program music determination unit determines the frequency characteristic of the broadcast wave based on the Fourier transform result of the Fourier transform unit,
    The situation determination unit determines whether or not the frequency characteristic determined by the program music determination unit has changed,
    The broadcast receiving apparatus according to claim 3, wherein the optimization processing unit updates the control information according to the changed frequency characteristic when the situation determining unit determines that the frequency characteristic has changed. ..
  5. 　搭乗者ごとの制御情報を記憶している制御情報記憶部を備え、
    　前記状況判別部は、前記車両に搭乗している搭乗者に対応する制御情報を前記制御情報記憶部から選択し、
    　前記最適化処理部は、前記状況判別部により判別された状況が変化した場合、前記状況判別部により選択された前記搭乗者に対応する前記制御情報を更新することを特徴とする請求項２記載の放送受信装置。     A control information storage unit that stores control information for each passenger,
    The situation determination unit selects control information corresponding to a passenger riding in the vehicle from the control information storage unit,
    The optimization processing unit updates the control information corresponding to the passenger selected by the situation determination unit when the situation determined by the situation determination unit changes. Broadcast receiver.
  6. 　前記状況判別部は、前記車両の現在位置が特異な電波環境であるか否かを判別し、
    　前記最適化処理部は、前記状況判別部により前記車両の現在位置が特異な電波環境であると判別された場合、前記制御情報を更新することを特徴とする請求項２記載の放送受信装置。     The situation determination unit determines whether or not the current position of the vehicle is a unique radio environment,
    The broadcast receiving apparatus according to claim 2, wherein the optimization processing unit updates the control information when the situation determination unit determines that the current position of the vehicle is in a unique radio wave environment.
  7. 　前記状況判別部は、前記車両の周辺に障害物が存在するか否かを判別し、
    　前記最適化処理部は、前記状況判別部により前記車両の周辺に障害物が存在すると判別された場合、前記制御情報を更新することを特徴とする請求項２記載の放送受信装置。     The situation determination unit determines whether or not an obstacle is present around the vehicle,
    The broadcast receiving apparatus according to claim 2, wherein the optimization processing unit updates the control information when the situation determining unit determines that an obstacle exists around the vehicle.
  8. 　車両に搭載される放送受信装置の放送受信方法であって、
    　受信部が、制御情報を用いて放送波の受信動作を行い、前記放送波の受信条件及び前記受信動作の受信性能結果を出力し、
    　最適化処理部が、前記受信条件に対する前記制御情報と前記受信性能結果との関係を学習して前記制御情報を更新し、
    　受信動作制御部が、前記最適化処理部により更新された前記制御情報を前記受信部に対して設定することを特徴とする放送受信方法。     A broadcast receiving method of a broadcast receiving device mounted on a vehicle, comprising:
    The receiving unit performs a broadcast wave receiving operation using the control information, and outputs the broadcast wave receiving condition and the reception performance result of the receiving operation,
    The optimization processing unit updates the control information by learning the relationship between the control information and the reception performance result for the reception condition,
    The broadcast receiving method, wherein the reception operation control unit sets the control information updated by the optimization processing unit in the reception unit.
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