JP2021103856A - Broadcast receiving device and broadcasting receiving method - Google Patents

Abstract

To provide a broadcast receiving device capable of quickly updating broadcast information of a broadcasting station.SOLUTION: In a broadcast receiving device, when broadcast is received by a receiving unit, a storage unit determines whether broadcast identification information is stored in a storage device, and when it is determined that the broadcast identification information is stored, in a case in which the broadcast information for the broadcast and the broadcast information stored in the storage device associated with the identification information are different, updates the broadcast information stored in the storage device to the broadcast information for the broadcast, and stores update information indicating that the broadcast information stored in the storage device is updated in association with the identification information; and when the receiving unit sequentially receives the broadcast, an acquisition unit obtains the broadcast information for the broadcast in a case in which the update information is associated with the identification information stored in the same storage device as the received identification information of the broadcast, and does not obtain the broadcast information for the broadcast in a case in which the update information is not associated with the identification information stored in the same storage device as the received identification information of the broadcast.SELECTED DRAWING: Figure 1

Description

The present invention generally relates to a technique for acquiring multiplex broadcast data.

Conventionally, there is known RDS broadcasting that uses RDS (Radio Data System) to multiplex digital data (RDS data) indicating broadcast contents and the like in FM (Frequency Modulation) broadcasting to provide various services.

The RDS data includes a PI (Programme Identification) code, an AF (Alternative Frequencies) list, a PS name (Program Service Name), and the like. The PI code is a code (identification information) that can identify a program including a country code, a program code, and the like. The AF list is a frequency list of broadcasting stations that broadcast the same program or related programs. The PS name is the name of the broadcasting station (broadcasting station name).

A broadcast receiver designed to conform to the RDS system is, for example, an AF list when a user goes out of the service area of a broadcast station designated by the user (hereinafter referred to as "selected station") while traveling in a vehicle. Automatically switches reception to another broadcasting station that broadcasts the same program, etc. by referring to.

Further, the broadcast receiving device displays a list of alternative broadcasting stations, receivable broadcasting stations, etc. (hereinafter, referred to as "station list") having the same PI code as the receiving broadcasting station on the display. The user can select a desired broadcasting station from the station list displayed on the display.

In addition, the user can manually update the station list (hereinafter referred to as "manual update") by performing a predetermined operation. Manual update is an operation of muting and searching all receivable broadcasting stations. For example, in the manual update, the PS name is acquired, but in the process of acquiring the PS name, for example, if a timeout time (for example, 5 seconds) is provided, it takes a maximum of 5 seconds per broadcasting station, so that the radio wave is transmitted. In a place where there are 20 broadcasting stations in a bad condition, it takes nearly 100 seconds to complete the process of acquiring the PS name.

In this regard, a receiving device capable of updating the station list at high speed and promptly providing the user with updated information of a receivable broadcasting station is disclosed (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-175967

In the receiving device described in Patent Document 1, the update of the station list can be speeded up by shortening the cycle for determining whether or not the frequency can be received as compared with the case other than the reception difficulty mode. However, in order to acquire information about all receivable broadcasting stations, if there are many receivable broadcasting stations, it takes time to update the station list.

The present invention has been made in consideration of the above points, and an object of the present invention is to propose a broadcast receiving device or the like capable of quickly updating broadcast information of a broadcasting station.

In order to solve such a problem, in the present invention, the present invention is a broadcast receiving device capable of receiving a broadcast in which data is multiplexed, and the data includes identification information that can identify the program of the broadcast and the broadcast. A receiving unit that includes the broadcasting information and receives the broadcasting, an acquisition unit that acquires the identification information of the broadcasting and the broadcasting information of the broadcasting from the broadcasting received by the receiving unit, and an acquisition unit acquired by the acquisition unit. The storage unit includes a storage unit that associates the identification information with the broadcast information and stores the broadcast information in the storage device. When the broadcast is received by the reception unit, the storage unit stores the identification information of the broadcast in the storage device. If it is determined whether or not the broadcast information is stored and it is determined that the broadcast information is stored, and the broadcast information of the broadcast and the broadcast information associated with the identification information and stored in the storage device are different, the storage The broadcast information stored in the device is updated to the broadcast information of the broadcast, and the update information indicating that the broadcast information stored in the storage device has been updated is stored in association with the identification information, and the acquisition unit is stored. Is the broadcast information of the broadcast when the update information is associated with the identification information stored in the same storage device as the identification information of the received broadcast when the broadcasts are sequentially received by the receiving unit. If the update information is not associated with the identification information stored in the same storage device as the received broadcast identification information, the broadcast information of the broadcast is not acquired.

According to the above configuration, for example, when broadcasts are sequentially received, the broadcast information can be obtained by acquiring the broadcast information whose broadcast information has changed in the past and skipping the acquisition of the broadcast information whose broadcast information has not changed. The time required for updating can be shortened.

According to the present invention, the broadcast information of a broadcasting station can be updated quickly.

It is a figure which shows an example of the structure of the broadcast receiving apparatus which concerns on 1st Embodiment. It is a figure which shows an example of the function of a broadcast receiving apparatus. It is a figure which shows an example of the data structure of RDS data. It is a figure which shows an example of a station list. It is a figure which shows an example of the processing at the time of reception. It is a figure which shows an example of the processing at the time of manual update. It is a figure which shows an example of the display mode of a station list. It is a figure which shows an example of the display mode of a station list. It is a figure which shows an example of the station list which concerns on 2nd Embodiment. It is a figure which shows an example of the change flag update process.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(1) First Embodiment This embodiment relates to a technique for acquiring FM multiplex broadcasting data. FM multiplex broadcasting is broadcasting that provides useful information for users by multiplexing digital signals in the gaps of FM broadcasting. For example, in FM multiplex broadcasting, information such as PS names, traffic jams, and accidents (hereinafter referred to as "broadcast information") is displayed as characters, figures, and the like.

The broadcast receiving device of the present embodiment skips the process of acquiring broadcast information, for example, for a broadcasting station whose broadcast information has not changed. According to such a configuration, the time required for updating the broadcast information can be shortened. Hereinafter, the above configuration will be mainly described.

The FM multiplex broadcasting system may be an RDS system, an RBDS (Radio Broadcast Data System) system, a DARC (Data Radio Channel) system, or an RTIC (Realtime) system. Information in the Cockpit) method may be used, or other FM multiplex broadcasting method may be used. In the following, a broadcast receiving device suitable for the RDS system will be described as an example, but a broadcasting receiving device suitable for another FM multiplex broadcasting system is also within the scope of the present invention.

In the following explanation, when explaining without distinguishing the same kind of elements, the common part (the part excluding the branch number) of the reference code including the branch number is used, and when explaining by distinguishing the same kind of elements. , A reference code including a branch number may be used. For example, when the blocks are described without being particularly distinguished, they are described as "block 310", and when the individual blocks are described separately, they are described as "block 310-1" and "block 310-2". May be described.

FIG. 1 is a diagram showing an example of the configuration of the broadcast receiving device 100.

The broadcast receiving device 100 is, for example, an on-board unit mounted on a vehicle traveling on a road. The broadcast receiving device 100 includes an antenna 101, a tuner 102, a radio signal processing circuit 103, an audio signal processing circuit 104, a power amplifier 105, a speaker 106, an RDS demodulation circuit 107, a PLL (Phase Locked Loop) circuit 108, a microcomputer 109, and an input. It includes an interface 110 and a display 111.

Note that FIG. 1 illustrates the main components necessary for the description of the present embodiment, and some components such as a housing, which is a general component of a broadcast receiving device, are shown. It is omitted as appropriate.

The broadcast receiving device 100 receives the broadcast radio wave (broadcast signal) by the antenna 101 and outputs it to the tuner 102. The tuner 102 extracts the RF (Radio Frequency) signal of the selected station from the received broadcast radio wave under the control of the microcomputer 109 via the PLL circuit 108. The extracted RF signal is frequency-converted to an intermediate frequency suitable for signal processing such as filtering. The tuner 102 outputs an IF (Intermediate Frequency) signal obtained by frequency conversion to the radio signal processing circuit 103.

In this way, the antenna 101, the tuner 102, the PLL circuit 108, and the microcomputer 109 operate as a receiving unit for receiving broadcast radio waves.

Here, the selected station is designated by the user's operation (user operation) on the input interface 110. The designated information of the selected station is stored in the internal memory of the microcomputer 109. Immediately after the power of the broadcast receiving device 100 is turned on, the microcomputer 109 controls the channel selection operation of the tuner 102 via the PLL circuit 108 according to the stored information of the built-in memory, for example.

The input interface 110 is assumed to be hardware, software, or various UIs (User Interfaces) in which these are combined. In the present embodiment, the input interface 110 is provided with a mechanical switch key, a membrane key, a GUI (Graphical User Interface) provided under a touch panel environment, and an operation key mounted on the front panel of the broadcast receiving device 100 main body. Remote controller etc. are included.

The radio signal processing circuit 103 includes an AD conversion circuit, an IF-Detection circuit, a noise canceller, a weak electric field processing (Multiplex) circuit, and the like. The IF signal input to the radio signal processing circuit 103 is AD-converted by the AD conversion circuit, detected as an audio signal by the IF detection circuit, and then noise is removed by the noise canceller. The audio signal is processed by the weak electric field processing circuit according to the reception state of the selected station such as mute, high cut, and separation control, and is output to the audio signal processing circuit 104. The radio signal processing circuit 103 has a detection function for detecting the reception state of the broadcasting station receiving the broadcast. The detection result is captured by, for example, the microcomputer 109 and used for stationed detection and the like.

The audio signal input to the audio signal processing circuit 104 is output and reproduced as audio from the speaker 106 after undergoing predetermined audio signal processing such as DA conversion and gain adjustment according to the volume by the power amplifier 105.

The radio signal processing circuit 103 includes, for example, a meter that indicates the strength of the received signal, a so-called S meter. The S meter measures the value of the detection voltage at the time of demodulation of the analog audio signal at a predetermined sampling cycle and outputs it to the microcomputer 109. The detection voltage value is a DC voltage (electric field strength of the received broadcast radio wave) proportional to the received broadcast radio wave.

The signal detected by the radio signal processing circuit 103 (hereinafter referred to as “detection signal”) is also output to the RDS demodulation circuit 107. After the demodulation process by the RDS demodulation circuit 107, the detection signal is decoded into RDS data (an example of broadcast information) by the RDS decoder 121 (decoding unit) in the microcomputer 109. The data structure of the RDS data will be described later with reference to FIG.

In this way, the radio signal processing circuit 103, the RDS demodulation circuit 107, and the microcomputer 109 operate as acquisition units for acquiring RDS data.

Microcomputer 109 is one or more processors. The at least one processor is typically a microprocessor such as a CPU (Central Processing Unit), but may be another type of processor such as a GPU (Graphics Processing Unit). At least one processor may be single core or multi-core. At least one processor may be a processor in a broad sense such as a hardware circuit (for example, FPGA (Field-Programmable Gate Array) or ASIC (Application Specific Integrated Circuit)) that performs a part or all of the processing.

The microcomputer 109 detects a user operation using the input interface, controls the PLL circuit 108 based on the user operation, and generates a tuning frequency signal for tuning to the frequency of broadcasting from an arbitrary broadcasting station. The microcomputer 109 controls the tuner 102 to tune to a frequency based on the tuning frequency signal generated by the PLL circuit 108, and receives broadcast radio waves from this frequency.

The microcomputer 109 includes a memory 122 for storing data. The memory 122 is one or more memories, and may typically be the main storage device. At least one memory in the memory 122 may be a volatile memory such as a RAM (Random Access Memory) or a non-volatile memory such as a ROM (Read Only Memory).

The microcomputer 109 stores the RDS data obtained by decoding in the memory 122. The RDS data includes a PI code, a PS name, an AF list, an RT (Radio Text), a PTY (Programme Type), a TP (Traffic Program), and the like.

The microcomputer 109 creates a station list using the RDS data. The microcomputer 109 stores the created station list in the memory 122.

In this way, the microcomputer 109 operates as a storage unit that stores the RDS data in the memory 122.

The station list is data that lists various information of a PI code, a PS name, and a broadcasting frequency for each broadcasting station in association with each other. The station list will be described later with reference to FIG. The microcomputer 109 displays a station list (more specifically, a PS name which is display information) on the display screen of the display 111.

In this way, the microcomputer 109 operates as a creation unit that creates a station list using RDS data. Further, the microcomputer 109 operates as a display control unit for displaying the PS name in the station list on the display screen of the display 111.

The user can select a desired PS name (broadcasting station) from the station list displayed on the display screen of the display 111. When a broadcasting station is selected and operated from the station list, the microcomputer 109 selects a frequency stored in association with the selected broadcasting station, and outputs and reproduces the audio service of the selected broadcasting station from the speaker 106. ..

FIG. 2 is a diagram showing an example of the functions of the broadcast receiving device 100.

The functions of the broadcast receiving device 100 (reception unit 201, acquisition unit 202, storage unit 203, etc.) may be realized, for example, by the microcomputer 109 reading and executing the program stored in the memory 122 (software). However, it may be realized by hardware such as a dedicated circuit, or it may be realized by combining software and hardware. Further, a part of the functions of the broadcast receiving device 100 may be realized by another computer capable of communicating with the broadcast receiving device 100.

The receiving unit 201 receives a broadcast radio wave (broadcast).

The acquisition unit 202 acquires the PI code of the broadcast and the PS name of the broadcast from the broadcast received by the reception unit 201.

The storage unit 203 stores the PI code acquired by the acquisition unit 202 and the PS name in association with each other in the memory 122.

FIG. 3 is a diagram showing an example of a data structure of RDS data (RDS data 300).

The RDS data 300 is composed of a group unit consisting of four blocks 310. Each block 310 consists of 26 bits of data. Of the 26 bits, 16 bits are RDS information and the remaining 10 bits are check words.

The inspection term is used when detecting and correcting an error that occurs in the middle of data transmission, or when identifying the beginning of a block 310 that is continuously transmitted without including a break or a special boundary signal. It is used for.

The first block 310-1 contains a PI code. The second block 310-2 includes a group type indicating the type of the group.

The group type consists of a group type code and a version code. The group type code is 4-bit data consisting of _{A 3} , A ₂ , A ₁ , and A _0. The version code is data indicating "A" or "B", and is 1-bit data consisting of _{B 0.} Therefore, the group types are 0A (A ₃ = 0, A ₂ = 0, A ₁ = 0, A ₀ = 0, B ₀ = 0) to 15B (A ₃ = 1, A ₂ = 1, A ₁ = 1). , A ₀ = 1, B ₀ = 1), and the configuration of the block 310 (what information is included in which bit, etc.) is specified by the group type.

Here, for example, the PS name is assigned to the fourth block 310-4 of the 0A group or the fourth block 310-4 of the 0B group. Since one character is 8 bits, the number of characters that can be transmitted in one group is 2 characters (16 bits). Therefore, four groups are required to complete the acquisition (reception) of the 8-character PS name.

For example, even if only one of the eight characters cannot be acquired due to noise or the like, it is necessary to wait for at least four groups. Here, the 0A group or the 0B group is transmitted at a rate of 40% of the total group. Further, about 90 ms is required for the transmission of one group. Therefore, even if only one character cannot be acquired, it is necessary to wait for about 1 s (= 90 × 4 ÷ 0.4). Further, if the specifications are such that it is determined that the PS name can be acquired when the PS name is acquired twice and matches, the waiting time becomes longer.

Further, for example, when the reception state is poor such that the broadcast radio wave is interrupted, a retry or the like is performed. As a result, the broadcast receiving device 100 waits until a predetermined time-out time (for example, 5 seconds) is reached for the acquisition of the PS name.

That is, when the PS name is acquired for all broadcasting stations, it takes time to acquire the PS name, which has a great influence on the user. Here, a method of not acquiring the PS name for a broadcasting station that has already acquired the PS name can be considered, but if the broadcasting station changes the PS name, the change cannot be grasped.

In this respect, in the present embodiment, the time required for updating the PS name is shortened by acquiring the PS name that has changed in the past. The details will be described later with reference to FIGS. 5 and 6.

FIG. 4 is a diagram showing an example of a station list (station list table 400).

The station list table 400 stores information in which the PI code 401, the frequency 402, the PS name 403, and the change flag 404 are associated with each other. In the station list table 400, other items such as PTY and TP may be associated with each other.

The PI code 401 is identification information (information indicating the PI code) that can identify the broadcast program. The frequency 402 is the broadcast frequency of the program identified by the PI code 401. The PS name 403 is the name of a broadcasting station that broadcasts the program identified by the PI code 401. The change flag 404 is a flag for identifying whether or not the PS name 403 has changed.

FIG. 5 is a diagram showing an example of processing (processing at the time of reception) when the broadcast receiving device 100 receives a broadcast radio wave when a predetermined user tuning is performed.

As a predetermined user tuning, the user operates the input interface 110 (for example, presses the seek button) to search for the next or previous broadcasting station having a strong broadcast radio wave, and the user selects the input interface. Dial 110 to select a broadcasting station by operating 110 (for example, manually set the dial button), and the user operates the input interface 110 to directly specify the frequency of the broadcasting station and select the broadcasting station. Direct tuning etc. can be mentioned.

In step S501, the broadcast receiving device 100 receives the broadcast radio wave and acquires the PI code, PS name, and the like from the received broadcast radio wave.

In step S502, the broadcast receiving device 100 determines whether or not a record having the same PI code as the acquired PI code is registered in the station list table 400 (whether or not it is a new reception). When the broadcast receiving device 100 determines that the record is not registered (new reception), the process shifts to step S503, and when it is determined that the record is registered (not a new reception), the broadcast receiving device 100 shifts the process. The process is transferred to step S504.

In step S503, the broadcast receiving device 100 registers the record related to the received broadcast radio wave in the station list table 400. For example, when the broadcast receiving device 100 receives a broadcast radio wave of 98.1 MHz for the first time in a predetermined user channel selection, the PI code “D401” and the PS name “ABCDEFGH” included in the broadcast radio wave and the broadcast radio wave of the broadcast radio wave The frequency "98.1" and the change flag "OFF" are registered in the station list table 400 as one record.

In step S504, the broadcast receiving device 100 determines whether or not there is a difference between the acquired PS name and the PS name of the record having the same PI code as the acquired PI code (whether or not there is a change in the PS name). To do. When the broadcast receiving device 100 determines that there is a change in the PS name, the process shifts to step S505, and when it is determined that there is no change in the PS name, the broadcast receiving device 100 ends the receiving process.

In step S505, the broadcast receiving device 100 refers to the station list table 400 and updates the PS name of the record having the same PI code as the acquired PI code to the acquired PS name.

In step S506, the broadcast receiving device 100 refers to the station list table 400, updates the change flag of the record of the same PI code as the acquired PI code to “ON”, and ends the reception processing.

In this way, information on unregistered broadcasting stations is automatically registered in the station list. When a change in the PS name is detected, the change flag is updated to "ON". In addition, it can be said that updating the change flag of the program in the predetermined user tuning to ON means updating the PS name of the program that the user often listens to.

FIG. 6 is a diagram showing an example of a process (process at the time of manual update) when the broadcast receiving device 100 manually updates the station list.

When the broadcast receiving device 100 detects that the user has performed the manual update operation via the input interface 110 while receiving the broadcast on one frequency of the broadcasting station, the manual update processing is started. To do.

In step S601, the broadcast receiving device 100 turns on the mute. The broadcast receiving device 100 turns on the mute function by the mute circuit (not shown). As a result, no sound is output from the speaker 106.

In step S602, the broadcast receiver 100 changes the frequency to the next step. For example, the microcomputer 109 controls the PLL circuit 108 and generates a tuning frequency signal in which the frequency to be tuned is advanced by one step (for example, 0.1 MHz) from the frequency being received.

In step S603, the broadcast receiving device 100 determines whether or not there is a receivable broadcasting station (whether or not there is a station). When the broadcast receiving device 100 determines that the station is stationed, the process is transferred to step S604, and when it is determined that the station is not stationed, the process is transferred to step S609.

For example, the microcomputer 109 controls the tuner 102, receives a broadcast radio wave having a frequency synchronized with the tuning frequency signal generated by the PLL circuit 108, and inputs the electric field strength and noise value of the broadcast radio wave at this frequency from the detection circuit. Calculate based on the signal to be generated. The noise value is calculated from, for example, multipath interference and adjacent interference. Subsequently, the microcomputer 109 compares the calculated electric field strength and the noise value with a preset threshold value, and determines whether or not there is a receivable broadcasting station at this frequency.

In step S604, the broadcast receiving device 100 determines whether or not it is a broadcasting station (RDS station) that transmits RDS data. When the broadcast receiving device 100 determines that it is an RDS station, it shifts the process to step S605, and when it determines that it is not an RDS station, it shifts the process to step S609.

The broadcast receiving device 100 determines whether or not the PI code can be acquired within a preset time. More specifically, when the PI code can be acquired, the broadcast receiving device 100 is a broadcasting station that broadcasts using RDS for a broadcasting station that broadcasts using a frequency determined to be receivable. judge. On the other hand, when the broadcast receiving device 100 cannot acquire the PI code, it determines that the broadcasting station that broadcasts using the frequency determined to be receivable is not the broadcasting station that broadcasts using RDS.

In step S605, the broadcast receiving device 100 determines whether or not a record having the same PI code as the PI code of the received broadcast radio wave is registered in the station list table 400 (whether or not it is a new reception). When the broadcast receiving device 100 determines that the reception is new, the process is transferred to step S607, and when it is determined that the reception is not new, the process is transferred to step S606.

In step S606, the broadcast receiving device 100 determines whether or not the change flag of the record having the same PI code as the PI code of the received broadcast radio wave is ON. When the broadcast receiving device 100 determines that the change flag is ON, the process shifts to step S607, and when it determines that the change flag is not ON (OFF), the broadcast receiving device 100 shifts the process to step S608.

In step S607, the broadcast receiving device 100 acquires the PS name from the received broadcast radio wave.

In step S608, the broadcast receiver 100 updates the station list table 400.

For example, when the broadcast receiving device 100 determines that the reception is new, the broadcast receiving device 100 registers the record related to the received broadcast radio wave in the station list table 400 in the same manner as in step S503.

Further, for example, when the broadcast receiving device 100 determines that the change flag is ON, the broadcast receiving device 100 refers to the station list table 400 and obtains the PS name of the record having the same PI code as the PI code of the broadcasting station with the acquired PS name. Update. Further, the broadcast receiving device 100 refers to the station list table 400 and updates the change flag of the record of the same PI code as the PI code of the broadcasting station to OFF. Further, the broadcast receiving device 100 updates other items (items other than PI code 401, frequency 402, PS name 403, and change flag 404) of the record with the acquired information.

Further, for example, when the broadcast receiving device 100 determines that the change flag is OFF, the broadcast receiving device 100 refers to the station list table 400 and acquires other items of the record having the same PI code as the PI code of the broadcasting station. Update with information.

In step S609, the broadcast receiving device 100 determines whether or not the processing is completed for all frequencies (for example, from 87.5 MHz to 108.0 MHz). When the broadcast receiving device 100 determines that the processing is completed, the processing is transferred to step S610, and when it is determined that the processing is not completed, the broadcasting receiving device 100 shifts the processing to step S602.

In step S610, the broadcast receiving device 100 turns off the mute and ends the manual update process.

In this way, when there is no change in the PS name, the time required for the manual update process can be shortened by not performing (skipping) the process of acquiring the PS name.

In addition, in order to turn on the change blowfish, it is necessary to receive the same broadcasting station again. In the case of a broadcasting station that has received only once in the past, the change in PS name cannot be detected, but it is regarded as a broadcasting station that is not in use. That is, even in the case of a broadcasting station that has received only once, the time required for the manual update process can be shortened by not performing the process of acquiring the PS name in the manual update process.

FIG. 7 is a diagram showing an example of a station list display mode (station list screen 700).

On the station list screen 700, information on the frequency of receivable broadcast radio waves and the PS name is displayed.

The broadcast receiving device 100 displays the station list screen 700 including the frequency and the PS name registered in the station list table 400 on the display 111. The broadcast receiving device 100 accepts the user's selection of a program (broadcasting station) from the list of frequencies and PS names displayed on the display 111 via the input interface 110. The broadcast receiving device 100 sets the frequency of the received program in the tuner 102 as the receiving frequency. This allows the user to listen to the desired program.

FIG. 8 is a diagram showing an example of a station list display mode (station list screen 800).

On the station list screen 800, information on the PS name of the broadcast radio wave that can be received is displayed.

The broadcast receiving device 100 displays the station list screen 800 including the PS name registered in the station list table 400 on the display 111. The broadcast receiving device 100 accepts a user's selection of a program from the list of PS names displayed on the display 111 via the input interface 110. The broadcast receiving device 100 refers to the station list table 400, specifies the frequency of the received program, and sets the specified frequency in the tuner 102 as the receiving frequency. This allows the user to listen to the desired program.

According to the present embodiment, when the station list is manually updated, the PS name of the broadcasting station whose PS name has changed in the past is acquired, and the acquisition of the PS name of the broadcasting station whose PS name has not changed is skipped. , The time required to update the station list can be shortened.

(2) Second Embodiment This embodiment is different from the first embodiment in that the process of acquiring the PS name of a program that is infrequently used is not performed. In the present embodiment, the same reference numerals are used for the same configurations as those in the first embodiment, and the description thereof will be omitted as appropriate.

FIG. 9 is a diagram showing an example of a station list (station list table 900). In this embodiment, the station list table 900 is used instead of the station list table 400.

The station list table 900 stores information in which the PI code 401, the frequency 402, the PS name 403, the change flag 404, and the OFF timer 901 are associated with each other. In the station list table 900, other items such as PTY and TP may be associated with each other.

The OFF timer 901 is information for managing the time for turning off the change flag 404. The OFF timer 901 indicates the remaining time up to a predetermined time (for example, 3 months) set in advance.

The OFF timer 901 is set to a predetermined time when the change flag 404 is updated to ON. When the OFF timer 901 is set, the broadcast receiving device 100 counts down the OFF timer 901.

When the OFF timer 901 (remaining time) becomes "0 (zero)", the change flag 404 is updated to OFF. If the broadcast receiving device 100 further detects a change in the PS name before the OFF timer 901 becomes "0 (zero)", the OFF timer 901 is reset (set a predetermined time).

FIG. 10 is a diagram showing an example of a process (change flag update process) in which the broadcast receiving device 100 updates the station list table 900 when a predetermined time elapses without changing the change flag. The change flag update process is executed at a predetermined timing (for example, periodically and at a predetermined time).

In step S1001, the broadcast receiver 100 acquires an unprocessed record from the station list table 900.

In step S1002, the broadcast receiving device 100 determines whether or not the OFF timer of the acquired record is “0“ zero ”” (whether or not a predetermined time has elapsed). When the broadcast receiving device 100 determines that the predetermined time has elapsed, the process shifts to step S1003, and when it determines that the predetermined time has not elapsed, the broadcast receiving device 100 shifts the process to step S1004.

In step S1003, the broadcast receiving device 100 updates the change flag of the station list table 900 to OFF, and cancels the OFF timer (for example, initialization “−”).

In step S1004, the broadcast receiving device 100 determines whether or not all the records have been processed (whether or not the acquired record is the last record). When the broadcast receiving device 100 determines that the acquired record is the last record, it ends the change flag update process, and when it determines that the acquired record is not the last record, returns the process to step S1001.

In this way, if a change is detected from the PS name that has been received even once in the past, the change flag is kept ON, but if a change is not detected again until a predetermined time has elapsed from the last change. , Update the change flag to OFF. According to such a configuration, it is possible to consider that the program with the PS name is used infrequently and exclude the acquisition of the PS name in the manual update processing.

(3) Addendum The above-described embodiment includes, for example, the following contents.

In the above-described embodiment, the case where the present invention is applied to a broadcast receiving device has been described, but the present invention is not limited to this, and various other systems (for example, car navigation systems) and devices (for example). , In-vehicle device), methods, programs can be widely applied.

Further, in the above-described embodiment, the vehicle-mounted device has been described as an example of the broadcast receiving device 100, but the present invention is not limited to the vehicle-mounted device. The broadcast receiving device 100 is, for example, a portable terminal such as a smartphone, a feature phone, a PHS (Personal Handy phone System), a tablet terminal, a notebook PC, a PDA (Personal Digital Assistant), a PND (Portable Navigation Device), or a portable game machine. There may be.

Further, in the above-described embodiment, the case where the change flag is used as a method for specifying the broadcasting station to acquire the PS name has been described, but the present invention is not limited to this configuration. For example, when there is a change in the PS name, information indicating that the PS name has changed, such as the time at that time, a predetermined character string, a predetermined number of hours, etc. (broadcast information stored in the storage unit). The update information indicating that the update has been performed) may be stored.

Further, in the above-described embodiment, the configuration for skipping the acquisition of the PS name has been described, but the present invention is not limited to this configuration. For example, in addition to or instead of the configuration of skipping the acquisition of the PS name, the configuration of skipping the acquisition of other broadcast information such as PTY may be used. In this case, for example, the station list table stores change flags of other broadcast information in association with the PI code.

Further, in the above-described embodiment, the case where the OFF timer is used as a method for detecting the elapse of a predetermined time has been described, but the present invention is not limited to this configuration. For example, when the change flag is updated to ON, the time at that time is set, and in the change flag update process, the current time is compared with the sum of the set time and the predetermined time, and the predetermined time is set. It may be detected that the passage has passed. Further, for example, the time when a predetermined time elapses is set, and in the change flag update process, the current time is compared with the set time to detect that the predetermined time has elapsed. Good.

Further, in the above-described embodiment, the case where the RDS data is stored in the station list table has been described, but the present invention is not limited to this configuration. For example, non-RDS data (information of a broadcasting station that is not a pre-registered RDS station) may be stored in the station list table. In this case, RDS data and non-RDS data may be displayed in the station list.

Further, in the above-described embodiment, in order to keep the PS name frequently listened to by the user up-to-date, the case where the update flag is turned ON when a predetermined user channel selection is triggered has been described, but the present invention is limited to this configuration. It's not a thing. For example, when the broadcast receiving device 100 receives the broadcast radio wave, the station list table shows the time during which the program identified by the PI code is being viewed (viewing time), the number of times the program is being viewed (viewing time), and the like. You may remember. In this case, for example, when the broadcast receiving device 100 determines Yes in step S606 and determines that the viewing time exceeds the threshold value, the broadcast receiving device 100 performs the process of step S607 and the viewing time does not exceed the threshold value. If it is determined, the process of step S607 is not performed. Further, for example, when the broadcast receiving device 100 determines Yes in step S606 and determines that the number of views exceeds the threshold value, the broadcast receiving device 100 performs the process of step S607 and determines that the number of views does not exceed the threshold value. If so, the process of step S607 is not performed.

Further, in the above-described embodiment, each table is an example of information, and one table may be divided into two or more tables, or all or a part of the two or more tables may be one table. There may be. Further, in the above-described embodiment, at least a part of the information may be information of any structure (for example, structured data or unstructured data), or a neural network that generates an output for an input. It may be a learning model such as a network.

Further, in the above-described embodiment, the function is described by the expression of "kkk unit", but the function may be realized by executing one or more computer programs by a control device (processor). It may be implemented by one or more hardware circuits (eg FPGA or ASIC) or by a combination thereof. When the function is realized by executing one or more programs by the control device, the function is at least one of the control devices because the predetermined processing is appropriately performed by using the storage device and / or the communication device or the like. It may be a part. The process described with the function as the subject may be a process performed by a control device or a device having the control device. The program may be installed from the program source. The program source may be, for example, a program distribution computer or a computer-readable recording medium (eg, a non-temporary recording medium). The description of each function is an example, and a plurality of functions may be combined into one function, or one function may be divided into a plurality of functions.

Further, in the above description, information such as programs, tables, and files related to each function can be placed in a memory, a storage device such as a hard disk or SSD, or a recording medium such as an IC card, SD card, or DVD. ..

The above-described embodiment has, for example, the following characteristic configurations.

A broadcast receiving device (for example, a broadcast receiving device 100) capable of receiving a broadcast in which data is multiplexed, and the data includes identification information (for example, a PI code) capable of identifying the broadcast program and the above. A receiving unit (for example, receiving unit 201) that includes broadcast information related to broadcasting and receives the broadcast, and an acquisition unit that acquires the identification information of the broadcast and the broadcast information of the broadcast from the broadcast received by the receiving unit. (For example, the acquisition unit 202) and the storage unit (for example, a computer capable of communicating with the memory 122 and the broadcast receiving device 100) store the identification information acquired by the acquisition unit and the broadcast information in association with each other. For example, a storage unit 203) is provided, and when a broadcast is received by the reception unit, the storage unit determines whether or not the identification information of the broadcast is stored in the storage device and stores the broadcast. If it is determined that there is (for example, No in step S502), and the broadcast information of the broadcast is different from the broadcast information associated with the identification information and stored in the storage device (for example, in step S504). Yes), the broadcast information stored in the storage device is updated to the broadcast information of the broadcast (see, for example, step S505), and the update information indicating that the broadcast information stored in the storage device has been updated (for example,). , The change flag "ON") is stored in association with the identification information (see, for example, step S506), and the acquisition unit receives broadcasts sequentially by the reception unit (for example, at the time of manual update). When the update information is associated with the identification information stored in the storage device, which is the same as the identification information of the received broadcast (Yes in step S606), the broadcast information of the broadcast is acquired and the received broadcast. If the update information is not associated with the identification information stored in the same storage device as the identification information of (No in step S606), the broadcast information of the broadcast is not acquired.

Data-multiplexed broadcasts include, for example, RDS-based broadcasting, RBDS-based broadcasting, DARC-based broadcasting, RTIC-based broadcasting, DAB (Digital Audio Broadcast) -based broadcasting, and IBOC (In-Band On-Channel). System broadcasting (for example, HD (High Definition) radio) and satellite digital system broadcasting (for example, SXM (Sirius XM) radio). Broadcast information related to the above broadcast is, for example, PS name, PTY, TP, TA (Traffic).
Announcement), AF, DI (Decoder Identification), M / S (Music / speech), PIN (Program Item Number), RT (Radio Text), TDC (Transparent Data Channel), IH (In-House application), RP ( Radio Paging), CT (Clock Time), EON (Enhanced Other Net's information), etc.

According to the above configuration, for example, when broadcasts are sequentially received, the broadcast information can be obtained by acquiring the broadcast information whose broadcast information has changed in the past and skipping the acquisition of the broadcast information whose broadcast information has not changed. The time required for updating can be shortened.

The data is composed of units of a predetermined group, and the broadcast information acquired by the acquisition unit from the broadcast received by the reception unit is the broadcasting station that performs the broadcasting (for example, the broadcasting station that transmits the broadcasting). It is name information (for example, PS name) indicating a name, and the above name information is information that is divided into a plurality of groups and transmitted.

According to the above configuration, for example, when broadcasts are sequentially received, a plurality of groups are obtained by acquiring the name information whose name information has changed in the past and skipping the acquisition of the name information whose name information has not changed. It is possible to shorten the time required for updating the name information that is divided into and transmitted.

When the broadcast is received by the receiver, the storage unit determines whether or not the identification information of the broadcast is stored in the storage device, and determines that the broadcast is not stored (for example, in step S502). Yes), the identification information of the broadcast and the broadcast information of the broadcast are associated and stored in the storage device (see, for example, step S503).

In the above configuration, for example, when a vehicle moves from country A to country B, the broadcast information can be automatically registered when the broadcast information is updated. Further, for example, in the above configuration, when a new broadcasting station is installed, broadcasting information can be automatically registered.

The storage unit cancels the association of the update information in which the predetermined time has passed among the update information stored in the storage device (for example, updates the change flag to OFF) (see, for example, step S1003).

In the above configuration, for example, the association of the update information after a predetermined time has passed is canceled, and the acquisition of the broadcast information of the program that is infrequently used is skipped, so that the time required for updating the broadcast information can be shortened. ..

For example, when renting one's own vehicle to another person, even if the update information of a program that one does not like is associated, the association of the update information is canceled when a predetermined time elapses. Therefore, the acquisition of broadcast information of other people's favorite programs will be skipped.

Further, for example, when a car-sharing vehicle is frequently used, even if the update information of a program that one does not like is associated, the association of the update information is canceled when a predetermined time elapses. , Acquisition of broadcast information of other people's favorite programs will be skipped.

Further, it is preferable that the predetermined time is set via the input interface 110. For example, when the vehicle is a rental car, even if the update information of the program selected by another user of the rental car is associated, if the time set according to the rental period elapses, the update information is concerned. Since the association of the above is canceled, the acquisition of the broadcast information of the program of the other user's favorite is skipped.

Further, the above-described configuration may be appropriately changed, rearranged, combined, or omitted as long as it does not exceed the gist of the present invention.

100 ... Broadcast receiver, 201 ... Receiver, 202 ... Acquisition, 202 ... Storage.

Claims (8)

A broadcast receiver that can receive broadcasts with multiplexed data.
The data includes identification information that can identify the program of the broadcast and broadcast information related to the broadcast.
The receiver that receives the broadcast and
An acquisition unit that acquires the identification information of the broadcast and the broadcast information of the broadcast from the broadcast received by the receiving unit.
A storage unit that stores the identification information acquired by the acquisition unit and the broadcast information in a storage device in association with each other.
With
When the broadcast is received by the receiver, the storage unit determines whether or not the broadcast identification information is stored in the storage device, and when it is determined that the broadcast information is stored, the broadcast information of the broadcast. When the broadcast information stored in the storage device is different from the broadcast information associated with the identification information, the broadcast information stored in the storage device is updated to the broadcast information of the broadcast and stored in the storage device. Update information indicating that the stored broadcast information has been updated is stored in association with the identification information.
When broadcasts are sequentially received by the receiving unit, the acquisition unit receives the broadcast when the update information is associated with the identification information stored in the storage device, which is the same as the identification information of the received broadcast. If the update information is not associated with the identification information stored in the same storage device as the received broadcast identification information, the broadcast information of the broadcast is not acquired.
Broadcast receiver. The data is composed of units of a predetermined group.
The broadcast information acquired by the acquisition unit from the broadcast received by the reception unit is name information indicating the name of the broadcasting station that performs the broadcast.
The name information is information that is divided into a plurality of groups and transmitted.
The broadcast receiving device according to claim 1. When the broadcast is received by the receiver, the storage unit determines whether or not the broadcast identification information is stored in the storage device, and when it is determined that the broadcast identification information is not stored, the broadcast identification information. And the broadcast information of the broadcast are associated with each other and stored in the storage device.
The broadcast receiving device according to claim 1. The storage unit releases the association of the update information for which a predetermined time has passed among the update information stored in the storage device.
The broadcast receiving device according to claim 1. It is a broadcast reception method for receiving broadcasts in which data is multiplexed.
The data includes identification information that can identify the program of the broadcast and broadcast information related to the broadcast.
When the receiver receives the broadcast,
The acquisition unit acquires the identification information of the broadcast and the broadcast information of the broadcast from the broadcast received by the receiving unit.
The storage unit stores the identification information acquired by the acquisition unit and the broadcast information in the storage device in association with each other.
With
When the broadcast is received by the receiver, the storage unit determines whether or not the broadcast identification information is stored in the storage device, and when it is determined that the broadcast information is stored, the broadcast information of the broadcast. When the broadcast information stored in the storage device is different from the broadcast information associated with the identification information, the broadcast information stored in the storage device is updated to the broadcast information of the broadcast and stored in the storage device. Update information indicating that the stored broadcast information has been updated is stored in association with the identification information.
When broadcasts are sequentially received by the receiving unit, the acquisition unit receives the broadcast when the update information is associated with the identification information stored in the storage device, which is the same as the identification information of the received broadcast. If the update information is not associated with the identification information stored in the same storage device as the received broadcast identification information, the broadcast information of the broadcast is not acquired.
Broadcast reception method. The data is composed of units of a predetermined group.
The broadcast information acquired by the acquisition unit from the broadcast received by the reception unit is name information indicating the name of the broadcasting station that performs the broadcast.
The name information is information that is divided into a plurality of groups and transmitted.
The broadcast receiving method according to claim 5. When the broadcast is received by the receiver, the storage unit determines whether or not the broadcast identification information is stored in the storage device, and when it is determined that the broadcast identification information is not stored, the broadcast identification information. And the broadcast information of the broadcast are associated with each other and stored in the storage device.
The broadcast receiving method according to claim 5. The storage unit releases the association of the update information for which a predetermined time has passed among the update information stored in the storage device.
The broadcast receiving method according to claim 5.

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