JP6646538B2 - Broadcast receiver - Google Patents

Description

  The present invention relates to a broadcast receiving device that receives a broadcast such as a radio broadcast.

  As a technique for receiving a broadcast such as a radio broadcast, a radio broadcast receiving apparatus having two sets of antennas and tuners uses two sets of antennas and tuners when the reception quality of the broadcast being received is poor. If the reception quality of the broadcast being received is good, one set of the antenna and the tuner can be used for receiving the broadcast and the other set can be received using the other set in the background. A technique for searching for a broadcast is known (for example, Patent Document 1).

JP 2007-60624 A

  According to the above-described radio broadcast receiving apparatus including two sets of antennas and tuners, the search for another receivable broadcast is performed using one set of antennas and tuners. On the other hand, according to phase diversity reception using two sets of antennas and tuners, it is possible to receive broadcasts with better reception quality as compared with the case where only one set of antennas and tuners is used.

  Therefore, according to the radio broadcast receiving apparatus that searches for other receivable broadcasts in the background using such a set of antennas and a tuner, when performing phase diversity reception using two sets of antennas and a tuner The search for a receivable broadcast is missed.

  Here, such a search omission can be eliminated by searching for other receivable broadcasts in the background by phase diversity reception using two sets of antennas and a tuner.

  On the other hand, when performing phase diversity reception, it is only possible to perform regular processing such as phase adjustment of the received signals received by the two sets of antennas and tuners, and then it is possible to receive broadcasts in a regular manner. It takes a longer time to detect the quality than to detect the broadcast reception quality using a set of antenna and tuner.

  For this reason, when searching for another receivable broadcast is performed in the background by phase diversity reception, there is a problem in that the time required for searching for another receivable broadcast becomes longer.

  Therefore, it is an object of the present invention to provide a broadcast receiving apparatus that performs diversity reception, in which a search for a broadcast receivable by diversity reception is performed in a short time without any omission.

  To achieve the above object, the present invention provides a broadcast receiving apparatus for receiving a broadcast transmitted using a broadcast channel, comprising: a first antenna, a second antenna, the first antenna, and a second antenna. And a diversity receiving unit that outputs the received broadcast content to the user, and a test channel, which is a broadcast channel to be tested, can be properly diversity-received by the diversity receiving unit. It comprises a receivable broadcast channel determining means for performing a determination process for determining whether or not the broadcast channel is a receivable broadcast channel, and a background receiving unit. In this case, the background receiving unit detects a reception quality of the test channel by the first antenna as a first reception quality, and a reception quality of the test channel by the second antenna. Reception quality detection unit that detects the reception quality of the test channel as the second reception quality, and diversity reception quality detection that detects the reception quality of the diversity reception using the first antenna and the second antenna of the test channel as the diversity reception quality Section. Further, the receivable broadcast channel determination means may be configured such that in the determination processing, at least one of the first reception quality and the second reception quality of the test channel is better than a first level representing a predetermined reception quality. The test channel is determined to be the receivable broadcast channel, and both the first reception quality and the second reception quality of the test channel represent a predetermined reception quality lower than the first level by a predetermined level. If the test channel is not better than level 2, it is determined that the test channel is not the receivable broadcast channel, otherwise, the diversity reception quality of the test channel is obtained, and the obtained diversity reception quality is good. , The test channel is determined to be the receivable broadcast channel, and when the obtained diversity reception quality is not good,査 channel determines that not the receivable broadcast channels.

  According to another aspect of the present invention, there is provided a broadcast receiving apparatus for receiving a broadcast transmitted using a broadcast channel, comprising: a first antenna; a second antenna; A diversity receiving unit that performs diversity reception of the broadcast using the antenna and outputs the received broadcast content to the user, and a test channel that is a broadcast channel to be tested is normally diversity-received by the diversity receiver. It comprises a receivable broadcast channel determining means for performing a determination process for determining whether or not the receivable broadcast channel is a receivable broadcast channel, and a background receiving unit. In this case, the background receiving unit detects a reception quality of the test channel by the first antenna as a first reception quality, and a reception quality of the test channel by the second antenna. Reception quality detection unit for detecting as a second reception quality, and diversity reception quality detection for detecting the reception quality of diversity reception of the test channel using the first antenna and the second antenna as diversity reception quality Section. Further, the receivable broadcast channel determination means may be configured to determine, in the determination process, that at least one of the first reception quality and the second reception quality of the test channel is better than a first level representing a predetermined reception quality. The test channel is determined to be the receivable broadcast channel, and both the first reception quality and the second reception quality of the test channel are not better than the first level, and the first reception quality is higher than the first level. If at least one of the quality and the second reception quality is not better than a second level indicating a predetermined reception quality lower than the first level by a predetermined degree, it is determined that the inspection channel is not the receivable broadcast channel. In other cases, the diversity reception quality of the test channel is obtained, and the test channel is transmitted when the obtained diversity reception quality is good. It determines that the signal can broadcast channels, when acquired diversity reception quality is not good, the test channel is determined not to be the receivable broadcast channels.

  Here, the broadcast receiving device as described above is registered in the broadcast receiving device in a station list in which a broadcast channel receivable by the diversity receiving unit is registered, and in accordance with a user operation, in the station list. A receiving channel control unit that causes the diversity receiving unit to receive a broadcast of a broadcast channel; and a station list creating unit that creates the station list. While switching the, the receivable broadcast channel determination means to perform the determination process for each test channel, to detect whether each broadcast channel is the receivable broadcast channel, to be the receivable broadcast channel The detected broadcast channel to the station It may be configured to register with the strike.

  In addition, the above broadcast receiving device includes a first tuner that receives a broadcast signal of the test channel using the first antenna, in the first reception quality detection unit, and the second reception quality detection unit A second tuner that receives the broadcast signal of the test channel using the second antenna, and the diversity reception quality detection unit receives a broadcast signal received by the first tuner and a second tuner that receives the broadcast signal. A diversity combining unit for diversity combining the broadcast signals thus obtained, and a detecting unit for detecting the diversity reception quality based on the broadcast signal combined by the diversity combining unit may be provided.

Here, in the above broadcast receiving apparatus, the first level may be a level of reception quality at which the first tuner or the second tuner cannot normally receive the test channel.
Further, in this case, the second level is normal in the diversity receiving unit when both the reception quality by the first antenna and the reception quality by the second antenna are not better than the second level. It is preferable to set a level that ensures that diversity reception cannot be performed.

Here, in the above broadcast receiving device, the broadcast may be a radio broadcast.
Further, each of the above broadcast receiving devices may be a broadcast receiving device mounted on an automobile.
According to such a broadcast receiving apparatus, when the test channel has at least one of the first reception quality and the second reception quality detected by the first reception quality detection unit and the second reception quality detection unit, respectively, the inspection channel is better than the first level. In some cases, or when both the first reception quality and the second reception quality are not better than the first level, and when both or one of the first reception quality and the second reception quality are not better than the second level, It is possible to determine whether or not the received broadcast channel is a receivable broadcast channel that can be normally diversity-received by the diversity reception unit, without detecting the diversity reception quality in the diversity reception quality detection unit that requires time.

  Here, when a broadcast can be normally received using a single antenna, the broadcast can be normally received also by diversity reception using two antennas. In addition, when both reception environments of the two antennas are inferior to a predetermined level or more, it is impossible to normally receive the broadcast even by the diversity reception.

  Therefore, according to the above-described broadcast receiving apparatus, by using appropriate first and second levels, the first reception quality detection unit and the second reception quality detection unit detect each using a single antenna. Even if the diversity reception unit determines the diversity reception based on the first reception quality and the second reception quality, it is possible to prevent the omission of searching for receivable broadcasts due to the diversity reception.

  As described above, according to the present invention, in a broadcast receiving apparatus that performs diversity reception, a search for a broadcast receivable by diversity reception can be performed in a short time without omission.

It is a block diagram showing the composition of the radio broadcast receiving set concerning the embodiment of the present invention. It is a flowchart which shows the station list registration process which concerns on embodiment of this invention. It is a figure showing the example of processing of the station list registration processing concerning the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows a configuration of a radio broadcast receiving apparatus according to the present embodiment.
As illustrated, the radio broadcast receiving apparatus 1 includes two antennas, a first antenna 101 and a second antenna 102, a receiving unit 103, an amplifier 104, a speaker 105, a control unit 106, an input device 107, a display device 108, a BG A receiving unit 109 and a memory 110 are provided.

  Next, the receiving unit 103 includes a first tuner 1031, a second tuner 1032, and a signal processing unit 1033. The first tuner 1031 is connected to the first antenna 101, and the second tuner 1032 is connected to the second antenna 102.

  The BG receiving section 109 includes a first BG tuner 1091, a second BG tuner 1092, and a reception quality detecting section 1093. The first BG tuner 1091 is connected to the first antenna 101, and the second BG tuner 1092 is connected to the second antenna 102.

  Here, in the first tuner 1031 and the second tuner 1032 of the receiving unit 103, one frequency channel is selectively set as the receiving channel of the receiving unit 103 by the control unit 106. Then, the first tuner 1031 generates an IF signal of the reception channel from the RF signal received by the first antenna 101 and outputs it to the signal processing unit 1033, and the second tuner 1032 generates the IF signal of the reception channel based on the RF signal received by the second antenna 102. An IF signal of the reception channel is generated and output to the signal processing unit 1033. The signal processing unit 1033 performs phase diversity synthesis for synthesizing the IF signal input from the first tuner 1031 and the IF signal input from the second tuner 1032 after performing phase adjustment, and restores and restores audio from the synthesized IF signal. The output sound is output to the amplifier 104.

Next, the amplifier 104 amplifies the sound output from the receiving unit 103 with the gain set by the control unit 106 and outputs the amplified sound from the speaker 105.
Next, in the first BG tuner 1091 and the second BG tuner 1092 of the BG receiving unit 109, the control unit 106 selectively sets one frequency channel as a test channel. Then, the first BG tuner 1091 generates an IF signal of the inspection channel from the RF signal received by the first antenna 101 and outputs the signal to the reception quality detection unit 1093, and the second BG tuner 1092 outputs the RF signal received by the second antenna 102. Then, it generates an IF signal of the inspection channel and outputs it to reception quality detection section 1093. Further, the first BG tuner 1091 calculates the reception quality of the test channel as the reception quality Qr1 from the signal strength (S meter) of the generated IF signal, and the second BG tuner 1092 checks the reception quality based on the signal strength of the generated IF signal. The reception quality of the channel is calculated as reception quality Qr2. However, the reception qualities Qr1 and Qr2 may be calculated in consideration of the SN ratio, multipath distortion, and the like.

  On the other hand, the reception quality detection unit 1093 performs phase diversity combining in which the IF signal input from the first BG tuner 1091 and the IF signal input from the second BG tuner 1092 are phase-adjusted and synthesized, and the signal strength of the synthesized IF signal is used. , The reception quality of the test channel is calculated as the diversity reception quality QrD. The reception quality detection unit 1093 calculates the diversity reception quality QrD after completing the pre-processing such as the phase difference detection for the above-described phase adjustment and allowing the test channel to be steadily received by the phase diversity combining. It takes some time to calculate the diversity reception quality QrD.

Next, the control unit 106 stores the station list in the memory 110 of the radio broadcast receiving device 1.
The station list is a list of frequency channels that can be received by the receiving unit 103 at present.
By the way, in such a configuration, the control unit 106 sets the frequency channel designated by the channel selection operation received from the user by the input device 107 as the reception channel in the reception unit 103, or registers the frequency channel registered in the station list of the memory 110. A list of frequency channels being displayed is displayed on the display device 108, and selection of a frequency channel from the list is received via the input device 107, and the received frequency channel is used as a reception channel, and the first tuner 1031 and the second In accordance with the processing to be set in the tuner 1032 and the channel switching operation received via the input device 107, the frequency channels registered in the station list of the memory 110 are sequentially set as reception channels with the first tuner 1031 of the reception unit 103. Performs processing to be set in the second tuner 1032, etc. It allows performing the reception of the reception unit 103 of the user desired frequency channel, the output to the speaker 105 of the speech received in the frequency channel.

Hereinafter, the station list updating process performed by the control unit 106 for creating and updating the station list will be described.
FIG. 2 shows the procedure of the station list updating process.
As shown in the drawing, in the station list updating process, the control unit 106 checks the frequency channel having the smallest frequency among the frequency channels on which broadcasting can be performed by the first BG tuner 1091 and the second BG tuner 1092 of the BG receiving unit 109. The channel is set (step 202).

Then, the reception qualities Qr1 and Qr2 of the test channel detected by the first BG tuner 1091 and the second BG tuner 1092 are acquired (Step 204).
Then, it is determined whether both the reception qualities Qr1 and Qr2 are lower than the threshold ThNG (step 206). If both the reception qualities Qr1 and Qr2 are lower than the threshold ThNG, If the frequency channel that is currently the inspection channel is registered in the station list, the registration of the frequency channel is deleted from the station list (step 216), and the process proceeds to step 218.

  Here, the reception quality NG, if both the reception quality Qr1 and Qr2 are lower than the reception quality NG, as a maximum value of the reception quality, it is ensured that the broadcast cannot be normally received even by the phase diversity reception, A value representing the reception quality NG is set in advance as the threshold ThNG.

  On the other hand, if at least one of the reception qualities Qr1 and Qr2 is not lower than the threshold ThNG (step 206), it is further checked whether at least one of the reception qualities Qr1 and Qr2 is higher than the threshold ThG (step 208). ).

  Here, the reception quality G is defined as the minimum value of the reception quality that ensures that the broadcast can be normally received by the reception using the pair of antennas and the tuner without performing the phase diversity reception. A value representing the reception quality G is set in advance.

  If at least one of the reception qualities Qr1 and Qr2 is higher than the threshold value ThG (step 208), the frequency channel set in the first BG tuner 1091 and the second BG tuner 1092 as a test channel is stored in the station of the memory 110. Registered in the list (step 214), and proceed to step 218.

  On the other hand, when both the reception qualities Qr1 and Qr2 are equal to or less than the threshold ThG, that is, when both the reception qualities Qr1 and Qr2 are equal to or less than the threshold ThG and at least one of the reception qualities Qr1 and Qr2 is equal to or greater than the threshold ThNG. If there is (Step 208), the diversity reception quality QrD of the test channel is acquired from the reception quality detection unit 1093 of the BG reception unit 109 (Step 210). At the start of step 210, if the reception quality detection section 1093 has not yet detected the diversity reception quality QrD of the test channel, the control section 106 checks the diversity reception quality QrD of the test channel with the reception quality detection section 1093. , And the diversity reception quality QrD is obtained.

  Then, it is determined whether or not the diversity reception quality QrD is higher than the threshold ThDG (step 212). After the registration of the frequency channel is deleted from the station list (step 216), the process proceeds to step 218.

  Here, as the threshold value ThDG, a value representing the reception quality DG is set in advance as the minimum value of the reception quality that ensures that the broadcast can be normally received by the phase diversity reception.

  On the other hand, if the diversity reception quality QrD is higher than the threshold ThDG (step 212), the frequency channels set in the first BG tuner 1091 and the second BG tuner 1092 as test channels are registered in the station list of the memory 110. (Step 214), and proceed to Step 218.

  Then, if the process proceeds to step 218 from any one of steps 214 and 216, the frequency channel set to the first BG tuner 1091 and the second BG tuner 1092 as the test channel becomes the frequency of the frequency channels that can be broadcast. Is the maximum frequency channel, and if the frequency is the maximum frequency channel, the process returns to step 202. If the frequency is not the maximum frequency channel, the In addition, the first BG tuner 1091 and the second BG tuner 1092 of the BG receiving unit 109 are set as the test channel, with the frequency channel having the next highest frequency after the frequency channel set in the first BG tuner 1091 and the second BG tuner 1092 as the test channel. Above (step 220), Back to the process from step 204.

The station list update processing performed by the control unit 106 has been described above.
Next, a processing example of the above-described station list updating processing will be described.
FIG. 3 shows whether the reception quality Qr1 / Qr2 is good or bad when the reception quality Qr1 / Qr2 is higher than the threshold ThG, and is bad when the reception quality Qr1 / Qr2 is lower than the threshold ThG and higher than the threshold ThNG. If the reception quality Qr1 / Qr2 is lower than the threshold ThNG, it is determined to be bad, and if the diversity reception quality QrD is good, if the diversity reception quality QrD is higher than the threshold ThDG, In the following case, a processing example of the station list update processing is shown as evil.

  As illustrated, in this example, when the station list update process is started, Ch01 is set as the inspection channel in the first BG tuner 1091 and the second BG tuner 1092, and the first BG tuner 1091 and the second BG tuner 1092 respectively perform Ch01. The reception qualities Qr1 and Qr2 are detected.

  Here, the receiving unit 103 can normally receive the broadcast by the phase diversity reception even in a state where the reception environment is worse than the case where the first BG tuner 1091 or the second BG tuner 1092 receives the broadcast alone. A frequency channel in which at least one of Qr1 and Qr2 is good can be normally received by the receiving section 103 in phase diversity.

  Therefore, here, since both the reception qualities Qr1 and Qr2 of Ch01 are good, the control unit 106 registers Ch01 in the station list, and sets the inspection channel set to the first BG tuner 1091 and the second BG tuner 1092 to Ch02. Switch.

  Then, the reception qualities Qr1 and Qr2 of Ch02 in the first BG tuner 1091 and the second BG tuner 1092 are detected. Here, the reception quality Qr1 of Ch02 is poor, but the reception quality Qr2 of Ch02 is good. Therefore, the control unit 106 registers Ch02 in the station list, and furthermore, the first BG tuner 1091 and the second BG tuner 1092. Switch the inspection channel to be set to Ch03.

  Then, the reception qualities Qr1 and Qr2 of Ch03 in the first BG tuner 1091 and the second BG tuner 1092 are detected. And here, the reception quality Qr1 and Qr2 of Ch03 are both bad, and the frequency channel in which the reception quality Qr1 and Qr2 are both bad cannot be normally received even if phase diversity reception is performed by the reception unit 103. Since the evil determination criterion (ThNG) is determined so as to be certain, the control unit 106 does not register Ch03 in the station list, but sets the inspection channel to be set in the first BG tuner 1091 and the second BG tuner 1092. Switch to Ch04.

  Then, the reception qualities Qr1 and Qr2 of Ch04 in the first BG tuner 1091 and the second BG tuner 1092 are detected. Since the reception qualities Qr1 and Qr2 of Ch04 are both poor here, it is not possible to determine whether or not Ch04 can be normally received when the receiving section 103 performs phase diversity reception. Therefore, control section 106 waits for reception quality detection section 1093 to detect diversity reception quality QrD of Ch04. Then, here, since the diversity reception quality QrD of Ch04 is good, control section 106 registers Ch04 in the station list and switches the test channel set in first BG tuner 1091 and second BG tuner 1092 to Ch05.

  Then, the reception qualities Qr1 and Qr2 of Ch05 in the first BG tuner 1091 and the second BG tuner 1092 are detected. Then, here, the reception quality Qr1 of Ch05 is good, and the reception quality Qr2 of Ch02 is poor, so the control unit 106 registers Ch05 in the station list and sends the first BG tuner 1091 and the second BG tuner 1092 to the station list. Switch the inspection channel to be set to Ch06.

  Then, the reception qualities Qr1 and Qr2 of Ch06 in the first BG tuner 1091 and the second BG tuner 1092 are detected. Then, here, the reception quality Qr1 of Ch06 is poor, and the reception quality Qr2 of Ch06 is bad. Therefore, when phase diversity reception is performed by the receiving unit 103, it is determined whether Ch06 can be normally received. Can not do. Therefore, control section 106 waits for reception quality detection section 1093 to detect diversity reception quality QrD of Ch06. And here, since the diversity reception quality QrD of Ch04 is bad, the control unit 106 switches the inspection channel set to the first BG tuner 1091 and the second BG tuner 1092 to Ch07 without registering Ch06 in the station list. .

Thereafter, the same processing is performed on all the peripheral frequency channels while switching the frequency channel to be the inspection channel.
Now, as shown in FIG. 3, the reception quality detection unit 1093 is used for the frequency channels in which both the reception qualities Qr1 and Qr2 in the first BG tuner 1091 and the second BG tuner 1092 are bad or one of them is bad and the other is bad. Since it is necessary to detect the diversity reception quality QrD in the above and to detect whether or not normal reception is possible in the case where the phase diversity reception is performed by the receiving unit 103, the detection requires a time TD.

  On the other hand, a frequency channel in which at least one of the reception qualities Qr1 and Qr2 in each of the first BG tuner 1091 and the second BG tuner 1092 is good or a frequency channel in which both the reception qualities Qr1 and Qr2 are bad are shorter than the time TD. It is possible to detect whether or not normal reception is possible when the receiving section 103 performs phase diversity reception without waiting for the reception quality detection section 1093 to detect the diversity reception quality QrD within the time TS.

Therefore, according to the station list registration processing according to the present embodiment, it is possible to search for receivable broadcasts by phase diversity reception in a short time without omission.
The embodiment of the invention has been described.
By the way, in the above embodiment, the diversity in the reception quality detection unit 1093 is used for the frequency channel in which both the reception qualities Qr1 and Qr2 in the first BG tuner 1091 and the second BG tuner 1092 are bad or one of them is bad and the other is bad. According to the quality of the reception quality QrD, the reception unit 103 detects whether or not normal reception is possible when phase diversity reception is performed. However, this may be implemented by changing as follows. .

  That is, only for the frequency channels in which both the reception qualities Qr1 and Qr2 in the first BG tuner 1091 and the second BG tuner 1092 are bad, the reception unit 103 performs the phase diversity reception in accordance with the quality of the diversity reception quality QrD in the reception quality unit. Is performed, the normal reception possibility is detected, and the frequency channel in which one of the reception qualities Qr1 and Qr2 in the first BG tuner 1091 and the second BG tuner 1092 is bad and the other is bad is unconditionally received by the receiving unit. At 103, it may be determined that normal reception is not possible when phase diversity reception is performed. In this case, the step 206 of the station list registration process in FIG. 2 is performed when the reception quality Qr1 <ThNG and the reception quality Qr2 <ThNG, when both the reception qualities Qr1 and Qr2 are equal to or smaller than ThG and If one of the qualities Qr1 and Qr2 is less than ThNG, the process proceeds to step 216; otherwise, the process proceeds to step 208.

  Further, in the above embodiment, the operation of searching for a receivable frequency channel in the background and registering it in the station list has been described. However, the reception quality detected by the first BG tuner 1091 and the second BG tuner 1092 shown in the present embodiment. The technology to determine whether or not frequency channel broadcasts can be received according to Qr1 / Qr2 and diversity reception quality QrD is similarly applied to the detection of whether or not frequency channel broadcasts can be received in any application, such as various searches and various scans can do.

  Also, in the above embodiment, the application to a broadcast receiving apparatus for receiving a radio broadcast has been described as an example. However, the present embodiment is directed to a broadcast receiving apparatus for receiving an arbitrary broadcast, such as a broadcast receiving apparatus for receiving a TV broadcast. The same applies to the device.

  DESCRIPTION OF SYMBOLS 1 ... Radio broadcast receiving apparatus, 101 ... 1st antenna, 102 ... 2nd antenna, 103 ... Receiving part, 104 ... Amplifier, 105 ... Speaker, 106 ... Control part, 107 ... Input device, 108 ... Display device, 109 ... BG Receiving unit, 110: memory, 1031: first tuner, 1032: second tuner, 1033: signal processing unit, 1091: first BG tuner, 1092: second BG tuner, 1093: reception quality detecting unit.

Claims (8)

A broadcast receiving device that receives a broadcast transmitted using a broadcast channel,
A first antenna;
A second antenna;
A diversity receiving unit that performs diversity reception of the broadcast using the first antenna and the second antenna and outputs received broadcast content to a user;
A receivable broadcast channel determination unit that performs a determination process of determining whether a test channel that is a broadcast channel to be inspected is a receivable broadcast channel that can be normally diversity-received by the diversity receiving unit,
A background receiving unit,
The background receiving unit,
A first reception quality detection unit that detects reception quality of the test channel by the first antenna as first reception quality;
A second reception quality detection unit that detects reception quality of the test channel by the second antenna as second reception quality;
A diversity reception quality detection unit that detects reception quality of diversity reception using the first antenna and the second antenna of the test channel as diversity reception quality,
The receivable broadcast channel determination means, in the determination processing,
If at least one of the first reception quality and the second reception quality of the test channel is better than a first level representing a predetermined reception quality, it is determined that the test channel is the receivable broadcast channel. ,
If both the first reception quality and the second reception quality of the test channel are not better than a second level representing a predetermined reception quality lower than the first level by a predetermined amount, the test channel is set to the receivable broadcast. Judge as not a channel,
In other cases, obtain the diversity reception quality of the test channel, determine that the test channel is the receivable broadcast channel when the obtained diversity reception quality is good, the obtained diversity reception quality is not good The broadcast receiving apparatus may determine that the test channel is not the receivable broadcast channel. A broadcast receiving apparatus for receiving a broadcast transmitted using a broadcast channel,
A first antenna;
A second antenna;
A diversity receiving unit that performs diversity reception of the broadcast using the first antenna and the second antenna and outputs received broadcast content to a user;
A receivable broadcast channel determination unit that performs a determination process of determining whether a test channel that is a broadcast channel to be inspected is a receivable broadcast channel that can be normally diversity-received by the diversity receiving unit,
A background receiving unit,
The background receiving unit,
A first reception quality detection unit that detects reception quality of the test channel by the first antenna as first reception quality;
A second reception quality detection unit that detects reception quality of the test channel by the second antenna as second reception quality;
A diversity reception quality detection unit that detects reception quality of diversity reception using the first antenna and the second antenna of the test channel as diversity reception quality,
The receivable broadcast channel determination means, in the determination processing,
If at least one of the first reception quality and the second reception quality of the test channel is better than a first level representing a predetermined reception quality, it is determined that the test channel is the receivable broadcast channel. ,
Both the first reception quality and the second reception quality of the test channel are not better than the first level, and at least one of the first reception quality and the second reception quality is equal to the first level. If not better than a second level representing a predetermined reception quality lower than a predetermined degree, it is determined that the test channel is not the receivable broadcast channel,
In other cases, obtain the diversity reception quality of the test channel, determine that the test channel is the receivable broadcast channel when the obtained diversity reception quality is good, the obtained diversity reception quality is not good The broadcast receiving apparatus may determine that the test channel is not the receivable broadcast channel. The broadcast receiving device according to claim 1 or 2,
A station list in which broadcast channels that can be received by the diversity receiving unit are registered,
In response to a user operation, receiving channel control means for causing the diversity receiving unit to receive a broadcast of a broadcast channel registered in the station list,
Station list creating means for creating the station list,
The station list creating unit, while switching the broadcast channel to be the inspection channel, causes the receivable broadcast channel determination unit to perform the determination process for each inspection channel, and determines whether each broadcast channel is the receivable broadcast channel. A broadcast channel that detects whether the broadcast channel is a receivable broadcast channel and registers the broadcast channel in the station list. The broadcast receiving apparatus according to claim 1, 2 or 3,
The first reception quality detection unit includes a first tuner that receives a broadcast signal of the test channel using the first antenna,
The second reception quality detection unit includes a second tuner that receives a broadcast signal of the test channel using the second antenna,
The diversity reception quality detection unit includes: a diversity combining unit that diversity-combines the broadcast signal received by the first tuner and the broadcast signal received by the second tuner; and A broadcast receiving apparatus, comprising: a detection unit that detects reception quality. The broadcast receiving apparatus according to claim 1, 2, 3, or 4,
The broadcast receiving apparatus according to claim 1, wherein the first level is a level of reception quality at which the first or second tuner cannot normally receive the test channel. The broadcast receiving device according to claim 5, wherein
In the second level, when both the reception quality by the first antenna and the reception quality by the second antenna are not better than the second level, the diversity reception unit cannot perform diversity reception normally. A broadcast receiving apparatus set to a level that guarantees the above. The broadcast receiving apparatus according to claim 1, 2, 3, 4, 5, or 6,
The broadcast receiving device, wherein the broadcast is a radio broadcast. The broadcast receiving apparatus according to claim 1, 2, 3, 4, 5, 6, or 7,
The broadcast receiving device is a broadcast receiving device mounted on an automobile.