JP2013191961A - Radio receiver and program for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve usability in performing channel selection of a radio receiver.SOLUTION: A radio receiver 5 comprises: a reception unit 7a for receiving a data broadcast and broadcasting programs from a broadcast station; a list generation unit 9 for generating a station list from the data broadcast acquired by the reception unit 7a; and a control unit 8 to which an operation unit 12 for accepting channel selection operation of the broadcast station received by the reception unit 7a is connected. The control unit 8 makes the reception unit 7a receive a broadcast station selected from the station list on the basis of channel selection operation accepted by the operation unit 12, when the number of receivable stations in the station list is equal to or larger than a predetermined number; and makes the reception unit 7a perform reception using a frequency scan on the basis of the channel selection operation accepted by the operation unit 12, when the number of receivable stations in the station list is smaller than the predetermined number.

Description

  The present invention relates to a radio receiver and a program thereof.

  RDS (Radio Data System) is widely used in Europe. RDS is a digital data multiplexing system that provides broadcasting station information and traffic information mainly using FM broadcasting.

  As a radio receiver that receives the RDS, a receiving unit that receives data broadcasts and broadcast programs from a broadcasting station, a list creation unit that creates a station list from the data broadcast obtained by the receiving unit, and the receiving unit There is known one having a control unit to which an operation unit that receives a channel selection operation of a broadcasting station is connected (for example, see Patent Document 1 below).

JP 2011-19041 A

  In the conventional example, since it takes time to update the station list, it is difficult to always keep the latest state. In such a situation, when a broadcasting station is selected from the station list, there are cases where the receiving station is not in a good reception state, which is very unusable.

  In particular, in the case of a receiving unit that cannot receive a plurality of broadcast stations at the same time, that is, in a configuration having only a main tuner and no sub-tuner, the station list cannot be updated while listening to a broadcast program. Therefore, such a problem appears remarkably.

  Furthermore, in-vehicle radio receivers receive broadcasts while moving, so the information in the station list and the actual broadcast status often differ. Therefore, even a broadcasting station selected from the station list may have a poor reception state. In such a case, it takes time to select a channel, and it is necessary to re-operate.

  An object of the present invention is to improve usability in selecting a radio receiver.

  In order to achieve this object, the radio receiver of the present invention includes a receiving unit that receives data broadcasts and broadcast programs from a broadcasting station, a list creation unit that creates a station list from the data broadcasts acquired by the receiving unit, A radio receiver having a control unit connected to an operation unit for receiving a tuning operation of a broadcast station received by the reception unit, and the control unit has a predetermined number or more of receivable broadcast stations in the station list The receiving unit receives the broadcasting station selected from the station list by the channel selection operation accepted by the operating unit, and the control unit accepts that the number of receivable broadcasting stations in the station list is less than a predetermined number. By the channel selection operation, the receiving unit is configured to receive by frequency scanning, thereby achieving the intended purpose.

  As described above, the radio receiver of the present invention includes a receiving unit that receives data broadcasts and broadcast programs from a broadcasting station, a list creating unit that creates a station list from the data broadcast obtained by the receiving unit, A radio receiver having a control unit connected to an operation unit for receiving a tuning operation of a broadcast station received by the reception unit, and the control unit has a predetermined number or more of receivable broadcast stations in the station list, The receiving unit receives the broadcast station selected from the station list by the channel selection operation received by the operation unit, and the control unit selects the station received by the operation unit when the number of receivable stations in the station list is less than a predetermined number. By the station operation, the receiving unit is configured to receive by frequency scanning, thereby achieving the intended purpose.

  That is, in the present invention, if there are many broadcast stations with good reception status in the station list, the station list is selected, and if not, a broadcast station with good reception status by frequency scanning is selected. That is, the user can select a broadcasting station with a good reception state simply by performing the same channel selection operation on the operation unit.

The figure which shows the state which mounted the radio receiver concerning embodiment of this invention in the vehicle Control block diagram of the radio receiver The figure which shows the memory contents of the same radio receiver The figure which shows the memory contents of the same radio receiver The figure which shows the memory contents of the same radio receiver Operation flowchart of the radio receiver The figure which shows the display state of the same radio receiver (A) A figure showing a display state of the radio receiver (b) A figure showing a display state of the radio receiver (c) A figure showing a display state of the radio receiver (d) A display state of the radio receiver Illustration

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
In FIG. 1, a handle 3 is arranged in front of the vehicle 2 inside the vehicle 1, and an audio device 4 is arranged on the left side of the handle 3. As a part of the audio apparatus 4, a radio receiver 5 in the embodiment of the present invention is configured.

  FIG. 2 is a block diagram showing an internal configuration of the radio receiver 5 in the embodiment of the present invention.

  The radio receiver 5 includes a reception unit 7a, a demodulation / separation unit 7b, a control unit 8, a list creation unit 9, an internal memory 10, a display unit 11, and an operation unit 12 to which a reception antenna 6 is connected. In addition, an amplifier 13 and a speaker 14 are connected to the radio receiver 5.

  As will be described in detail later, the internal memory 10 stores the frequency learning table 15, the RDS learning table 16, and the reception candidate station list 17.

  Next, the internal configuration of the radio receiver 5 will be described in detail.

  The radio receiver 5 receives digital radio broadcasts including broadcast station information via the reception antenna 6. Here, the broadcast station information is, for example, an RDS station using RDS (Radio Data System), broadcast station name data (PSN) and attribute data (TP / TA) acquired from the currently receiving broadcast station. , Program contents (PTY) and the like.

  The radio receiver 5 according to the embodiment of the present invention can also receive a broadcast station (non RDS station) that is not an RDS station.

  The receiving unit 5 receives the broadcast signal of the broadcast channel of the reception channel selected (selected) by the user via the operation unit 12. The received broadcast signal is input to the demodulation / separation unit 7b.

  The demodulator / separator 7b receives the broadcast signal output from the receiver 7a. The demodulator / separator 7b demodulates the input broadcast signal. The demodulator / separator 7b separates the input broadcast signal into audio data of the broadcast program and broadcast station information by demodulation. The demodulation / separation unit 7b outputs the audio data and the broadcast station information to the control unit 8, respectively.

  The control unit 8 includes a CPU (central processing unit), a ROM (read only memory), a RAM (random access memory), and the like built in the radio receiver 5, and the radio receiver 5 according to a program stored in the ROM. Control the operation of each part.

  For example, when a digital radio broadcast is set as an audio source by the user's operation of the operation unit 12, the control unit 8 responds to a user operation of the operation unit 12 among broadcast stations that can be broadcast (reproduced) by the radio receiver 5. Thus, a receiving channel that can be received by the receiving unit 7a is set.

  Information about the audio source is set in the temporary storage table of the internal memory 10. Specifically, when the user performs an operation for setting the audio source to radio broadcasting using the operation unit 12, the control unit 8 indicates that the audio source is set to digital radio broadcasting according to the operation. Write information to the temporary storage table.

  Also, when the user performs an operation for setting the audio source to CD using the operation unit 12, the control unit 8 stores information indicating that the audio source is a CD in the temporary storage table in accordance with the operation. Write.

  Further, the control unit 8 causes the amplifier 13 to output the sound represented by the audio data output from the demodulation / separation unit 7b to the speaker 14.

  The audio file output from the control unit 8 is input to the amplifier 13. The amplifier 13 performs a process of amplifying the level of sound (broadcast program or the like) represented by the audio data stored in the input audio file and outputting it to the speaker 14.

  The speaker 14 outputs the audio data amplified by the amplifier 13.

  The display unit 11 is constituted by, for example, an LCD (liquid crystal display) of the audio device 4 and is capable of receiving a digital radio broadcast under the control of the control unit 8 or broadcast program information. Is displayed.

  As shown in FIG. 7, the operation unit 12 is provided on the front surface of the audio device 4, for example, various buttons, direction keys, numeric keys, or hardware such as a touch panel arranged on the display unit 11, or a display A software keyboard having functions such as buttons, direction keys, and numeric keys is virtually displayed on the unit 11 as software.

In addition, the operation unit 12 may be configured by a reception unit that can receive an operation signal including operation content from a remote controller terminal different from the audio device 4.

  The internal memory 10 stores a frequency learning table 15, an RDS learning table 16, and a reception candidate station list 17 as shown in FIGS. Although not shown, a temporary storage table is also stored.

  The frequency learning table 15 shown in FIG. 3 is a learning memory in which all frequencies (87.5 to 108.0) are collected every 100 kHz step in the entire FM band. An index is assigned every 100 kHz step, and it includes the past reception history and reception quality information of the currently receiving broadcast station [frequency]. Further, in the case of an RDS station, it is composed of link information with the RDS learning table 16 of FIG. 4 compiled for each recognition ID of the RDS station, an RDS timer value that counts the passage of time since the RDS data was decoded, and the like Is done.

  Similar to the frequency learning table 15, the RDS learning table 16 shown in FIG. 4 is a collection of past reception history and RDS data obtained by decoding and acquiring from the currently receiving broadcast station for each recognition ID data (PI code). is there. Each data is composed of broadcast station name data (PSN), attribute data (TP / TA), program content (PTY), and the like. Each recognition ID data is linked to the frequency learning table 15 in FIG. A plurality of frequencies may correspond to each recognition ID data, so that the best frequency of the reception quality can be searched from the reception history of the plurality of frequencies.

  The reception candidate station list 17 shown in FIG. 5 is created from the frequency learning table 15 in FIG. 3 and the RDS learning table 16 in FIG. 4, and lists RDS stations and non RDS stations that are determined to be receivable at a certain point in time. It is a thing.

  Next, a procedure for creating the reception candidate station list 17 will be described.

  First, the list creation unit 9 extracts a frequency having a reception quality equal to or higher than the threshold from the frequency learning table 15 in FIG. 3 and divides the frequency into a frequency having a link with an RDS station identification ID and a frequency having no link.

  For the former, the RDS timer value is narrowed down to less than the threshold value, and the target recognition ID is determined as a list of receivable RDS stations. In addition, when there are a plurality of frequencies having a link with the same RDS station recognition ID when determining the reception frequency for each recognition ID, the one having the best reception quality is extracted as the representative frequency. Then, the reception candidate station list 17 of the RDS stations is determined, for example, sorted in the order of RDS recognition IDs, and stored as a list of RDS stations in the memory of the reception candidate station list 17.

  Subsequently, the latter is sorted in order of frequency as a non-RDS station candidate station and stored next to the list of RDS stations in the reception candidate station list 17. Each stored reception station has a reception quality value and frequency information. On the other hand, in the case of an RDS station, other broadcast station names and attribute data are stored together.

  In the above configuration, a processing flow of direct channel selection in the UP direction using the reception candidate station list 17 will be described with reference to FIG.

  First, processing is started by a user's UP direction seek (channel selection search) operation on the operation unit 12.

In step S1, the control unit 8 starts channel selection in the UP direction of the reception candidate station list 17 and mutes the audio output. A display example of the display unit 11 at this time is shown in FIGS. 7 and 8A (for example, RDS station recognition ID (PI code) = 0xD363 of the current receiving station). FIG. 7 is a front view of the audio device 4, and FIG. 8A shows only the display area. In the following display examples, only the display area is extracted as shown in FIG.

  Next, the control unit 8 counts the total number of candidate stations in the reception candidate station list 17, and if it is equal to or greater than the threshold (step S2: Yes), directly selects the next station in the UP direction of the current station from the reception candidate station list 17. The operation proceeds to the station operation (step S3, display example: FIG. 8B). When the control unit 8 is less than the threshold value (step S2: No), the control unit 8 shifts to the frequency seek up operation (step S4, display example: FIG. 8C). Next, the control part 8 will complete | finish a process, if a channel can be selected by frequency Seek Up operation | movement (step S5).

  In step S6, the control unit 8 checks the reception quality of the broadcast station having the searched reception frequency and the reception status of the RDS data. If the broadcast station is in good reception, the control unit 8 displays the station name on the display unit 11 and starts outputting audio (step S7, display example: FIG. 8D). Thereafter, the process ends.

  If this broadcast station does not receive well, the control unit 8 further shifts to the direct channel selection operation of the next station.

  The control unit 8 checks the reception quality of the broadcast station having the searched reception frequency and the reception status of the RDS data. If the broadcast station is in good reception (step S9: Yes), the control unit 8 displays the station name on the display unit 11 and starts audio output (step S10). Thereafter, the process ends.

  If this broadcast station is not in good reception (step S9: No), the control unit 8 returns to step S8 in order to shift to the direct channel selection operation of the next station. If this loop is repeated to some extent, for example, if the reception frequency that has been searched once is searched again, the reception is impossible and the process ends.

  In addition, when step S8 and step S9 are repeated twice, for example, the process may shift to the frequency seek up operation in step S4. In this way, it is possible to avoid the mute time becoming longer than necessary by repeating the direct channel selection operation many times.

  Further, if the frequency seek up operation is performed, it is possible to check the reception status of the broadcast station having the frequency scanned until the receivable broadcast station is found. That is, if the rate of performing the frequency scanning operation such as the frequency seek up operation is increased, the reception candidate station list 17 can be brought closer to the latest state accordingly.

  As described above, in the present embodiment, the receiving unit 7a that receives data broadcasts and broadcast programs from a broadcasting station, the list creating unit 9 that creates a station list from the data broadcast obtained by the receiving unit 7a, and the reception The radio receiver 5 includes a control unit 8 connected to an operation unit 12 that receives a channel selection operation of a broadcast station received by the unit 7a. The control unit 8 includes a predetermined number of receivable broadcast stations in the station list. When there is the above, the receiving unit 7a receives the broadcasting station selected from the station list by the channel selection operation accepted by the operation unit 12, and the control unit 8 determines that the number of broadcasting stations that can be received in the station list is less than a predetermined number. The receiving unit 7a is configured to perform reception by frequency scanning by the channel selection operation received by the operation unit 12, thereby achieving the intended purpose.

  That is, in the present invention, if there are many broadcast stations with good reception status in the station list, the station list is selected, and if not, a broadcast station with good reception status by frequency scanning is selected. That is, the user can select a broadcasting station with a good reception state simply by performing the same channel selection operation on the operation unit 12.

  As described above, the radio receiver of the present invention includes a receiving unit that receives data broadcasts and broadcast programs from a broadcasting station, a list creating unit that creates a station list from the data broadcast obtained by the receiving unit, and a receiving unit. A radio receiver having a control unit connected to an operation unit for receiving a tuning operation of a receiving broadcast station, and the control unit is configured so that when the station list includes a predetermined number or more of receivable broadcast stations, the operation unit The receiving unit receives the broadcast station selected from the station list by the received channel selection operation, and the control unit performs the channel selection operation received by the operation unit when the number of broadcast stations that can be received in the station list is less than a predetermined number. The receiving unit is configured to receive by frequency scanning, thereby achieving the intended purpose.

  In other words, the present invention is expected to be used as an in-vehicle audio device.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car interior 3 Handle 4 Audio apparatus 5 Radio receiver 6 Reception antenna 7a Reception part 7b Demodulation separation part 8 Control part 9 List creation part 10 Internal memory 11 Display part 12 Operation part 13 Amplifier 14 Speaker 15 Frequency learning table 16 RDS Learning table 17 List of candidate reception stations

Claims (4)

A receiving unit that receives data broadcasts and broadcast programs from a broadcasting station, a list creating unit that creates a station list from the data broadcast obtained by the receiving unit, and an operation for accepting a tuning operation of the broadcasting station received by the receiving unit A radio receiver having a control unit to which the unit is connected,
The control unit causes the receiving unit to receive a broadcasting station selected from the station list by a channel selection operation received by the operation unit when there are a predetermined number or more of the receivable broadcasting stations in the station list,
When the number of broadcast stations that can be received in the station list is less than a predetermined number, the control unit causes the reception unit to perform reception by frequency scanning by a channel selection operation received by the operation unit.   The radio receiver according to claim 1, wherein the receiving unit includes only a main tuner.   The radio receiver according to claim 1, wherein the list creation unit selects a receivable broadcasting station using a time after receiving the data broadcast. Creating a station list from a data broadcast acquired by a receiving unit that receives a data broadcast from a broadcast station and a broadcast program;
A step of receiving a tuning operation;
When there are a predetermined number or more of receivable broadcasting stations in the station list, the receiving unit receives a broadcasting station selected from the station list;
When the number of broadcast stations that can be received in the station list is less than a predetermined number, the reception unit performs reception by frequency scanning; and
A program that causes a computer to execute.