JP2008294744A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a digital broadcast receiver for quickly selecting an affiliated station by a single operation with user's intention. <P>SOLUTION: The digital broadcast receiver is provided with: a storing part for storing a broadcasting station from having received a digital broadcast signal in association with an affiliated station number and a unique identifier of the broadcasting station when sequentially scanning receivable frequency bands; and an operating part for outputting a signal for instructing to select the affiliated station with a user's operation. When receiving a signal output by the operating part, the digital broadcast receiver determines whether a broadcasting station having the same affiliated station number as an affiliated station is included in the currently received digital broadcast signal by referring to the storing part and selects a station on the basis of the result of the determination. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a digital broadcast receiving apparatus that shortens the channel selection time of affiliated stations.

  In the case of digital broadcasting, information (hereinafter referred to as channel information) such as a broadcast station unique identifier (hereinafter referred to as TSID), a broadcast station name, a physical channel number, and an affiliated station number included in the received digital broadcast signal is transmitted. There is a problem that the channel search operation takes time compared to the case of analog broadcasting due to the relationship between the period and the modulation method. For this reason, the conventional digital broadcast receiving apparatus searches for a receivable channel (frequency band) in advance and stores the searched channel in association with the remote control number together with the broadcast station name so that the reception state is poor. In some cases, the channel associated with the remote control number designated by the user is selected (for example, see Patent Document 1). In addition, all the broadcast stations are stored for each affiliated station in advance, and when the reception state is deteriorated, the channel having the highest received power is selected from the broadcast station of the same series as the receiving broadcast station. (For example, refer to Patent Document 2).

JP 2006-238117 A JP 2001-44803 A

  The conventional digital broadcast receiving apparatus is configured as described above, and when the digital broadcast signal cannot be received, the channel associated with the remote control number designated by the user is selected. When the reception status deteriorates, it automatically switches to the affiliated station, so if the broadcast station program being received is different from the affiliated station program, it will switch to the affiliated station against the user's intention. was there. In addition, if all broadcast stations are stored in advance for each affiliated station, a huge amount of storage capacity is required, and if the affiliated station number or the like is changed, the stored information needs to be updated. was there.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a digital broadcast receiving apparatus capable of quickly selecting an affiliated station by a single operation according to a user's intention.

  The present invention relates to a storage unit that stores a broadcast station that can receive a digital broadcast signal in association with an affiliated station number and a unique identifier of the broadcast station when sequentially scanning a receivable frequency band, and a sequence by a user operation. An operation unit that outputs a signal instructing station selection, and when receiving the signal output from the operation unit, with reference to the storage unit, the affiliated station number included in the digital broadcast signal being received It is determined whether or not there is a broadcasting station having the same affiliated station number, and channel selection is performed based on the determination result.

  According to the present invention, when a receivable frequency band is sequentially scanned, a storage unit that stores a broadcast station that can receive a digital broadcast signal in association with an affiliated station number and a unique identifier of the broadcast station, and a sequence by a user operation An operation unit that outputs a signal instructing station selection, and when receiving the signal output from the operation unit, with reference to the storage unit, the affiliated station number included in the digital broadcast signal being received It is determined whether there is a broadcasting station having the same affiliated station number, and channel selection is performed based on the determination result, so that the affiliated station can be quickly selected in a single operation according to the user's intention. There is an effect.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 is a configuration diagram of a digital broadcast receiving apparatus according to the first embodiment. The digital broadcast receiving apparatus according to the first embodiment includes an antenna 1, a tuner 2, a signal separating unit 3, a video decoder 4, an audio decoder 6, an OSD (On Screen Display) superimposing unit 5, a CPU (Central Processing Unit) 7, a channel information storage unit (storage unit) 8, a reception unit 9, and a remote controller (operation unit) 10. The antenna 1 receives a digital broadcast signal transmitted from a broadcast station. The tuner 2 selects a digital broadcast signal received by the antenna 1, converts the selected digital broadcast signal into an IF (Intermediate Frequency) signal, and outputs the IF signal. The signal separation unit 3 separates and outputs the IF signal output from the tuner 2 into a video stream, an audio stream, and other information signals (hereinafter referred to as additional data).

  The video decoder 4 restores (decodes) the video stream output from the signal separation unit 3 and outputs it as a video signal. The audio decoder 6 restores (decodes) the audio stream output from the signal separation unit 3 and outputs it as an audio signal. The receiving unit 9 receives and outputs a signal transmitted from the remote controller 10. The OSD superimposing unit 5 superimposes a channel banner such as a physical channel number and a broadcasting station name on the basis of an instruction from the CPU 7, a menu screen when the remote controller 10 is operated, and the like on the video of the video signal output from the video decoder 4. indicate.

  FIG. 2 is a diagram showing the remote controller 10. When the user presses the affiliated station button 11 of the remote controller 10, a signal (affiliated station search signal) instructing the remote station 10 to search for the affiliated station of the currently receiving broadcast station. Is sent. Further, when the user presses another button arranged on the remote controller 10, an instruction signal corresponding to the pressed button is transmitted.

  FIG. 3 is a diagram showing the information structure stored in the channel information storage unit 8, and the frequency band UHF (Ultra High Frequency) 13 (physical channel number 13) allocated to terrestrial digital broadcasting to UHF 62 (physical channel). Channel information such as TSID, broadcast station name, physical channel number and the like included in the additional data of the digital broadcast signal received when the channel number 62) is sequentially scanned is stored. The channel information storage unit 8 can store a plurality of pieces of channel information (hereinafter referred to as preset information) obtained when the frequency bands UHF13 to UHF62 assigned to terrestrial digital broadcasting are sequentially scanned. .

  The CPU 7 acquires the additional data from the additional data receiving unit 71 when the affiliated station search signal is output from the additional data receiving unit 71 that receives the additional data output from the signal separating unit 3 and the receiving unit 9, The affiliated station number included in the additional data is output to the determination unit 73, instructs the tuner 2 to select a channel based on the determination result of the determination unit 73, and the video stream and audio stream of the digital broadcast signal before channel selection The control unit 72 for instructing the video decoder 4 and the audio decoder 6 to start decoding the video stream and the audio stream of the digital broadcast signal after channel selection, respectively, When the number is output, the channel information storage unit 8 is referred to determine whether or not there is a broadcasting station having the same affiliated station number. And a determination unit 73 for outputting the results.

Next, the operation will be described.
FIG. 4 is a flowchart showing the operation of the digital broadcast receiving apparatus according to the first embodiment. In the first embodiment, as shown in FIG. 3, only one preset information (preset information A) is stored in the channel information storage unit 8, and a digital broadcast signal transmitted from the broadcast station “AAA” is stored. It is assumed that is selected.
When the digital broadcast signal transmitted from the broadcast station “AAA” cannot be received because the broadcast station “AAA” is out of the reception area, when the user presses the affiliated station button 11 of the remote control 10, A station search signal is transmitted (step ST1). When receiving the affiliated station search signal, the receiving unit 9 outputs the affiliated station search signal to the control unit 72. When the affiliated station search signal is output from the receiving unit 9, the control unit 72 acquires the additional data from the additional data receiving unit 71, and the affiliated station number “0” of the broadcast station “AAA” included in the additional data. Is output to the determination unit 73.

  When the affiliated station number “0” is output from the control unit 72, the determining unit 73 confirms whether a broadcast station having the same affiliated station number as the affiliated station number “0” exists in the channel information storage unit 8. Determine (step ST2, step ST3). Here, since there is a broadcast station “GGG” having the same affiliated station number “0”, the determination unit 73 determines from the channel information storage unit 8 that the TSID of the broadcast station “GGG” having the same affiliated station number “0”. “7D50” is acquired, and the TSID “7D50” is output to the control unit 72. Based on the TSID “7D50” output from the determination unit 73, the control unit 72 instructs the tuner 2 to select the physical channel number “27” of the broadcast station “GGG” of the TSID “7D50”. Based on the instruction, the physical channel number “27” of the broadcasting station “GGG” is selected (step ST4).

  If the same affiliated station number “0” does not exist in step ST3, the determining unit 73 notifies the control unit 72 that the identical affiliated station number “0” does not exist. The tuner 2 is instructed to sequentially scan the physical channel numbers 13 to 62 assigned to the digital broadcast. The tuner 2 sequentially scans physical channel numbers 13 to 62 based on the instruction. The control unit 72 performs the scanning until a broadcasting station having the same TSID is selected (hereinafter referred to as a physical channel search) (step ST5).

  As described above, in the digital broadcast receiving apparatus according to the first embodiment, when the affiliate station button 11 of the remote controller 10 is pressed by the user, a broadcast station having the affiliated station number that is the same as the affiliated station number of the receiving broadcast station is displayed. It is determined whether or not the channel information storage unit 8 exists, and when the same affiliated station number exists, the broadcast station having the same affiliated station number is selected, so that the physical channel search There is an effect that an affiliated station can be instantly selected by a single operation without intention of the user. Further, since only the preset information is stored in the storage unit 8 without storing all the broadcasting stations for each affiliated station in advance, there is an effect that a huge storage capacity is not required. Instead of transmitting the affiliated station search signal from the remote controller, the digital broadcast receiving apparatus may be provided with an operation unit 12 having an affiliated station button.

Embodiment 2. FIG.
In the first embodiment, the mode in which the affiliated station search signal is transmitted when the affiliated station button 11 of the remote controller 10 is pressed has been described. In the second embodiment, the difference in the time to press the affiliated station button 11 of the remote controller 10 is different. That is, a description will be given of a mode in which the operation of searching for affiliated stations is changed depending on whether the button is pressed long (pressed time is 2 seconds or longer) or short pressed (pressed time is less than 2 seconds). Since the configuration other than the remote controller 10 is the same as that of the first embodiment, the description thereof is omitted.

Next, the operation will be described.
FIG. 5 is a flowchart showing the operation of the digital broadcast receiving apparatus according to the second embodiment. The remote controller 10 determines whether or not the affiliated station button is pressed for a short time (step ST11). When the affiliated station button 11 is pressed for a short time, the remote controller 10 transmits an affiliated station search signal, and the receiving unit 9 receives the affiliated station search signal. Is output to the control unit 72. When the affiliated station search signal is output from the receiving unit 9, the control unit 72 acquires additional data from the additional data receiving unit 71 and outputs the affiliated station number included in the additional data to the determining unit 73. When the affiliated station number is output from the control unit 72, the determining unit 73 refers to the channel information storage unit 8 to determine whether there is a broadcasting station having the same affiliated station number as the output affiliated station number. Confirm and judge (step ST12, step ST13).

  In step ST13, when there is a broadcasting station having the same affiliated station number, the determination unit 73 acquires the TSID of the broadcasting station having the same affiliated station number, and outputs the TSID to the control unit 72. 72 instructs the tuner 2 to select the physical channel number of the broadcasting station of the TSID based on the TSID output from the determination unit 73. Based on the instruction, the tuner 2 selects the physical channel number of the broadcasting station of the TSID (step ST14). If the same affiliate station number does not exist in step ST13, the operation is terminated.

  In step ST11, if it is not a short press, it is determined that a long press has been made (step ST15), and the remote controller 10 sequentially scans a receivable frequency band and instructs a channel selection (hereinafter referred to as a physical search signal). Send). The receiving unit 9 receives the physical search signal and outputs it to the control unit 72. When the physical search signal is output from the receiving unit 9, the control unit 72 performs a physical channel search for selecting an affiliated station by sequentially scanning a receivable frequency band (step ST16).

  As described above, in the digital broadcast receiving apparatus according to the second embodiment, the operation for searching for affiliated stations is changed depending on whether the affiliated station button 11 provided on the remote controller 10 is pressed for a short time or a long time. There is an effect that the user can select an operation for searching for affiliated stations when it is known in advance that the preset information stored in the channel information storage unit 8 does not include broadcast station information of the same affiliated group. Other effects are the same as those of the first embodiment.

Embodiment 3 FIG.
In the first and second embodiments, the mode in which only the preset information A is stored in the channel information storage unit 8 has been described. However, in the second embodiment, the preset information A and the preset information B are stored in the channel information storage unit 8. A mode in which two pieces of preset information are stored will be described.

  FIG. 6 is a diagram showing the structure of information stored in the channel information storage unit 8 of the digital broadcast receiving apparatus according to the third embodiment, in which two pieces of preset information, preset information A and preset information B, are stored. Yes. The determination unit 73 according to the third embodiment includes a counter for measuring a value and an internal memory for temporarily storing the TSID, and the control unit 72 is a timer for measuring a predetermined time. It has. Since other configurations are the same as those in the first embodiment, the description thereof is omitted.

Next, the operation will be described.
FIGS. 7-1 and 7-2 are flowcharts showing the operation of the digital broadcast receiving apparatus according to the third embodiment, and FIG. 7-1 shows a broadcasting station of the same series as the digital broadcast signal being received. FIG. 7-2 is a flowchart showing the operation at the time of channel selection. In the third embodiment, the digital broadcast signal transmitted from the broadcast station “HHH” shown in FIG. 6 is selected, the preset information A number is 1, and the preset information B number is 2. The description will be given assuming that there is something.

  When the user presses the affiliated station button 11 when the digital broadcast signal transmitted from the broadcast station “HHH” cannot be received because the mobile station is out of the reception area of the broadcast station “HHH”, the affiliated station search signal is transmitted from the remote controller 10. Is sent. When receiving the affiliated station search signal, the receiving unit 9 outputs the affiliated station search signal to the control unit 72. When the affiliated station search signal is output from the receiving unit 9, the control unit 72 acquires the additional data from the additional data receiving unit 71 and sends the affiliated station number “0” included in the additional data to the determining unit 73. Output. When the affiliated station number “0” is output from the control unit 72, the determining unit 73 deletes (clears) the previous search result stored in the internal memory (step ST21).

  Next, the determination unit 73 sets the counter value to 0 (step ST22). Next, the determination unit 73 confirms that the number of preset information stored in the channel information storage unit 8 is 2, and confirms whether the value of the counter is smaller than the number of preset information ( Step ST23). Here, since the counter value is 0 and the preset information number is 2, the determination unit 73 refers to the channel information storage unit 8 and is the same as the number obtained by adding 1 to the counter value “0”. It is determined by checking whether there is a broadcasting station having the same affiliated station number as the affiliated station number “0” output from the control unit 72 in the number preset information A (steps ST24 and ST25).

  Here, since there is a broadcast station “AAA” and a broadcast station “GGG” having the same affiliated station number “0” in the preset information A, the determination unit 73 sets the TSID “7D70” of the broadcast station “AAA”, The TSID “7D50” of the broadcast station “GGG” is stored in the internal memory, and the counter value is incremented by 1 (step ST27). Next, the determination unit 73 compares the counter value with the number of preset information (step ST23), and since the counter value is 1 and the number of preset information is 2, the affiliated station number is added to the second preset information B. It is determined whether or not there is a broadcasting station having the same affiliated station number as “0” (step ST24, step ST25).

  Here, since there is no broadcast station having the same affiliated station number “0” as the broadcast station “HHH” in the preset information B, the determination unit 73 increments the counter value by 1 (step ST27). Next, since the value 2 of the counter is not smaller than the preset information number 2, the determination unit 73 acquires the TSID “7D70” stored in the internal memory (step ST28) and outputs it.

  When TSID “7D70” is output from determination unit 73, control unit 72 starts channel selection processing (step ST29). The control unit 72 instructs the tuner 2 to select the physical channel number “24” of the broadcast station “AAA” based on the TSID “7D70” output from the determination unit 73, and also starts the timer and receives it. Status monitoring is started (step ST30). When the control unit 72 can receive the digital broadcast signal transmitted from the broadcast station “AAA” within a predetermined time, the control unit 72 resets the timer, stops monitoring the reception state (step ST36), and uses the preset information. The channel selection operation for the affiliated music is terminated (step ST35).

  If the digital broadcast signal transmitted from the broadcast station “AAA” cannot be received within a predetermined time in step ST31, the control unit 72 resets the timer and stops monitoring the reception state (step ST32). Then, it is confirmed whether there are still affiliated stations in the memory of the determination unit 73 (step ST33). Here, since the broadcasting station “GGG” having the TSID “7D50” exists as an affiliated station that can be selected, the determination unit 73 deletes the TSID “7D70” of the broadcasting station “AAA” from the memory, and then broadcasts. The TSID “7D50” of the station “GGG” is acquired from the memory and output to the control unit 72. When the TSID “7D50” is output, the control unit 72 performs the processing from step ST29 as in the case of the broadcast station “AAA”.

  In step ST31, when the digital broadcast signal transmitted from the broadcast station “GGG” cannot be received within a certain time, the control unit 72 resets the timer and stops monitoring the reception state (step ST32). It is confirmed whether there is still a selectable affiliate station (step ST33). If there are no more selectable affiliate stations, the control unit 72 performs a physical channel search (step ST37). The operation ends.

  As described above, in the third embodiment, since all preset information stored in the channel information storage unit is confirmed when searching for affiliated stations, a plurality of affiliated stations can be selected as channel selection targets. There is an effect that the reception probability of the digital broadcast signal transmitted from the affiliated station increases. In addition, although this Embodiment 3 demonstrated the case where it applied to Embodiment 1, it is also possible to apply to Embodiment 2. FIG. In this case, when the affiliated station button 11 is pressed for a short time, the affiliated station channel selection operation is started, but in step ST33 of FIG. 7-2, if there is no affiliated affiliated station, the operation of step ST37 is performed. End the operation without doing it.

Embodiment 4 FIG.
In the third embodiment, the case where the preset information A and the preset information B are stored in the channel storage unit 8 has been described. However, in the fourth embodiment, preset information stored in the past is held. A mode of using the past preset information will be described.

  FIG. 8 is a diagram showing an information structure stored in the channel information storage unit 8 of the digital broadcast receiving apparatus according to the fourth embodiment. The preset information A and the previous previous preset information A ′ are two. Preset information is stored. Since other configurations are the same as those in the third embodiment, description thereof is omitted.

Next, the operation will be described.
FIG. 9 is a flowchart showing the operation of the digital broadcast receiving apparatus according to the fourth embodiment. In the fourth embodiment, it is assumed that the digital broadcast signal transmitted from the broadcast station “CCC” shown in FIG. 8 is selected and the number of the preset information A ′ is 1.

  If the affiliated station button 11 is pressed by the user when the digital broadcast signal transmitted from the broadcast station “CCC” cannot be received because it is out of the reception area of the broadcast station “CCC”, the affiliated station search signal is transmitted from the remote controller 10. Is sent. When receiving the affiliated station search signal, the receiving unit 9 outputs the affiliated station search signal to the control unit 72. When the affiliated station search signal is output from the receiving unit 9, the control unit 72 acquires additional data from the additional data receiving unit 71 and outputs the affiliated station number included in the additional data to the determining unit 73. When the affiliated station number is output from control unit 72, determination unit 73 deletes (clears) the previous search result stored in the internal memory (step ST41).

  Next, the determination unit 73 sets the value of the counter to 0 (step ST42). Next, the determination unit 73 confirms that the number of past preset information stored in the channel information storage unit 8 is 1, and confirms whether the value of the counter is smaller than the number of preset information. (Step ST43). Here, since the counter value is 0 and the number of the past preset information is 1, the determination unit 73 refers to the channel information storage unit 8 and adds 1 to the counter value “0”. It is determined whether or not there is a broadcasting station having the same affiliated station number as the affiliated station number “3” output from the control unit 72 in the preset information A ′ having the same number (step ST44, step ST45). .

  Here, since there is a broadcast station “LLL” having the same affiliated station number “3” in the preset information A ′, the determination unit 73 stores the TSID “7EF3” of the broadcast station “LLL” in the internal memory. The counter value is incremented by 1 (step ST47) and is set to 1. Next, the determination unit 73 compares the counter value with the number of preset information (step ST43), and since the counter value is 1 and the number of preset information is 1, TSID “7EF3” stored in the internal memory. (Step ST48) and output to the control unit 72. Since the subsequent processing is the same as step ST29 to step ST35 in FIG.

  As described above, in the fourth embodiment, preset information stored in the past is held and the past preset information is used, so that more stations are selected as channel selection targets than in the third embodiment. The reception probability of digital broadcasting signals transmitted from the same affiliated station is increased. In this embodiment, the case where the present invention is applied to the first embodiment has been described. However, the present embodiment can also be applied to the second embodiment in the same manner as the third embodiment.

Embodiment 5. FIG.
In the fourth embodiment, the past preset information is stored as it is without being processed. However, in the fifth embodiment, when storing the past preset information, only the information necessary for selecting the affiliated station is stored. The form to memorize | store is demonstrated.
FIG. 10 is a diagram showing a case where only a physical channel number, a TSID, and an affiliated station number are stored as information necessary for channel selection. FIG. 11 is a diagram showing a case where physical channel numbers and TSIDs are organized and stored for each affiliated station.

  As described above, in the fifth embodiment, as shown in FIGS. 10 and 11, only information necessary for selection of affiliated stations is stored as past preset information, so that the memory usage is suppressed. There is an effect that can.

1 is a configuration diagram of a digital broadcast receiving device according to Embodiment 1. FIG. It is the figure which showed the information structure memorize | stored in the channel information storage part. It is the figure which showed the button arrangement | sequence of the remote control. 3 is a flowchart showing an operation of the digital broadcast receiving apparatus according to the first embodiment. 6 is a flowchart illustrating an operation of the digital broadcast receiving apparatus according to the second embodiment. It is the figure which showed the information structure memorize | stored in the channel information storage part. It is the flowchart which showed the operation | movement which confirms presence of the same affiliated station. It is the flowchart which showed the operation at the time of channel selection. It is the figure which showed the information structure memorize | stored in the channel information storage part. It is the flowchart which showed operation | movement of the digital broadcast receiver. It is the figure which showed the case where only a physical address, TSID, and an affiliated station number were memorize | stored. It is the figure which showed the case where the physical address and TSID were arranged and memorize | stored for every affiliated station.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Antenna, 2 Tuner, 3 Signal separation part, 4 Video decoder, 5 OSD superimposition part, 6 Audio decoder, 7 CPU, 8 Channel information storage part (memory | storage part), 9 Receiving part, 10 Remote control (operation part), 11 series Station button, 12 operation section.

Claims (4)

In a digital broadcast receiver that receives a digital broadcast signal transmitted from a broadcast station,
A tuner that selects the received digital broadcast signal;
A storage unit that stores a unique identifier and a physical channel number of a broadcasting station that can receive a digital broadcast signal in association with an affiliated station number of the broadcasting station when sequentially scanning receivable frequency bands;
An operation unit that outputs a signal instructing channel selection by a user operation;
When a signal instructing the channel selection of the affiliated station is output from the operation unit, a control unit that outputs the affiliated station number included in the digital broadcast signal being received;
When the affiliated station number is output from the control unit, it is determined whether or not there is a broadcasting station having the same affiliated station number as the affiliated station number output from the control unit with reference to the storage unit, A determination unit that outputs the determination result;
The digital broadcast receiver according to claim 1, wherein the control unit instructs the tuner to select a channel based on the determination result. In a digital broadcast receiver that receives a digital broadcast signal transmitted from a broadcast station,
A tuner that selects the received digital broadcast signal;
A storage unit that stores a unique identifier and a physical channel number of a broadcasting station that can receive a digital broadcast signal in association with an affiliated station number of the broadcasting station when sequentially scanning receivable frequency bands;
A button for accepting a user operation; when the button is pressed for a short time, a signal instructing the channel selection is output; when the button is pressed for a long time, a receivable frequency band is sequentially scanned to An operation unit for outputting a signal for instructing channel selection of
When a signal instructing channel selection is output from the operation unit, an affiliated station number included in the digital broadcast signal being received is output, and frequency bands that can be received from the operation unit are sequentially scanned. When a signal instructing channel selection is output, a control unit that sequentially scans a receivable frequency band and instructs to select an affiliate station;
When the affiliated station number is output from the control unit, it is determined whether or not there is a broadcasting station having the same affiliated station number as the affiliated station number output from the control unit with reference to the storage unit, When there is a broadcasting station having an affiliated station number that is the same as the affiliated station number output from the control unit in the storage unit, a determination unit that outputs a unique identifier of the broadcasting station,
When the unique identifier is output from the determining unit, the control unit instructs the tuner on a physical channel number corresponding to the unique identifier.   When there are a plurality of broadcast stations having the same affiliated station number as the affiliated station number included in the digital broadcast signal being received in the storage unit, the control unit If a digital broadcast signal transmitted from the selected broadcast station cannot be received within a certain period of time, a broadcast station different from the selected broadcast station is selected from the plurality of broadcast stations. 3. The digital broadcast receiving apparatus according to claim 1, wherein the tuner is instructed to select a channel.   4. The storage unit according to claim 1, wherein the storage unit stores a unique identifier and a physical channel number of the broadcasting station in association with each affiliated station. 5. Digital broadcast receiver.

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