JP2012080293A - Broadcast receiver, rescanning method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a broadcast receiver, a rescanning method, and a program capable of following change in broadcasting frequency without markedly damaging user friendliness in broadcast acquisition.SOLUTION: The broadcast receiver is provided with: reception means which receives a broadcast; image recording means which automatically executes image recording of a predetermined broadcast during a predetermined time; rescanning means which when the predetermined broadcast to be recorded by the image recording means cannot be received, rescans the predetermined broadcast; and control means which when the rescanning means detects the predetermined broadcast, controls the reception means to receive the predetermined broadcast according to the result of the rescanning and controls the image recording means to record the predetermined broadcast.

Description

  Embodiments described herein relate generally to a broadcast receiving apparatus, a rescanning method, and a program.

  For example, when a broadcast wave is completely shifted from terrestrial analog broadcasting to terrestrial digital broadcasting, channel repacking that changes (switches) the frequency at which a service provided by each broadcast station is broadcast may be performed.

  The broadcast receiving apparatus needs to change the setting of the frequency for receiving the service by following the channel repack (change of the broadcast frequency), and the service cannot be continuously acquired unless the change is performed.

  However, there are many users who do not have knowledge about channel repacking, and the setting of changing the reception frequency following channel repacking is a burden on the user.

JP 2006-174194 A

  For this reason, there have been proposed broadcast receiving apparatuses that automatically perform setting for changing the reception frequency following channel repacking (change of the broadcast frequency). However, these proposals greatly enhance the viewing of the service desired by the user. In some cases, the recording was interrupted or the scheduled recording could not be executed.

  The present invention has been proposed in view of the above, and provides a broadcast receiver, a rescan method, and a program that can follow a change in broadcast frequency without significantly impairing the convenience of user service acquisition. Is an issue.

  The broadcast receiving apparatus in the present embodiment cannot receive the predetermined service that is a recording target in the recording unit, a recording unit that automatically executes recording of the predetermined service at a predetermined time, and a receiving unit that receives the service Rescanning means for performing rescanning of the predetermined service; and when the rescanning means detects the predetermined service, the receiving means receives the predetermined service based on the result of the rescanning, and Control means for causing the recording means to record the predetermined service.

The block diagram which shows an example of the internal structure of DTV in embodiment. The conceptual diagram which shows an example of the receivable frequency table in embodiment. The flowchart which shows an example of the process relevant to the rescan process in embodiment. FIG. 6 is an overview diagram illustrating an example of alerts and icon displays displayed on a display unit in the embodiment. FIG. 5 is an overview diagram illustrating an example of a display for causing a user to select whether to apply a rescan result according to the embodiment. FIG. 6 is an overview diagram illustrating an example of a display indicating that a broadcast wave may not be received for reasons other than channel repacking in the embodiment. FIG. 6 is an overview diagram illustrating an example of a display for causing a user to select whether to apply a rescan result according to the embodiment. The flowchart which shows an example of the process relevant to the rescan process in embodiment. The flowchart which shows an example of the process relevant to the rescan process in the modification of embodiment. The flowchart which shows an example of the process relevant to the rescan process in the modification of embodiment.

  Embodiments will be described below with reference to the drawings.

  First, a hardware configuration of the DTV 1 that is an example of the broadcast receiving apparatus in the present embodiment will be described.

  FIG. 1 is a block diagram showing an example of the internal configuration of the DTV 1 in this embodiment.

  A DTV 1 (Digital Television) is an example of a broadcast receiving apparatus in the present embodiment that can display a received broadcast signal on a display unit. In this embodiment, the case where the broadcast receiving device is mounted on the DTV 1 will be described. However, the present invention is not limited to this. For example, another broadcast receiving device such as an STB (Set Top box), a mobile phone with a broadcast receiving function, It can be used for a video recording apparatus equipped with a broadcast receiving apparatus, a PC (Personal Computer), and the like.

  The DTV 1 includes a control unit 156 that controls the operation of each unit of the apparatus. The control unit 156 includes a CPU 159 (Central Processing Unit) and the like. The control unit 156 is a system control stored in advance in a ROM (Read Only Memory) 157 according to an operation signal input from the operation unit 116 or an operation signal transmitted from the remote controller 117 and received via the light receiving unit 118. Start the program and various processing programs. The control unit 156 controls the operation of each unit of the apparatus according to a started program using a RAM (Random Access Memory) 158 as a work memory of the CPU 159. The control unit 156 stores and uses information necessary for various settings in a flash memory 160 that is a nonvolatile memory such as a NAND flash memory.

  The input terminal 144 supplies a satellite digital television broadcast signal received by the BS / CS digital broadcast receiving antenna 143 to the satellite digital broadcast tuner 145. The tuner 145 tunes the received digital broadcast signal and transmits the tuned digital broadcast signal to a PSK (Phase Shift Keying) demodulator 146. The PSK demodulator 146 demodulates a TS (Transport Stream) and supplies the demodulated TS to the TS decoder 147a. The TS decoder 147a includes the TS as a digital video signal, a digital audio signal, and a data signal. After decoding into a digital signal, it is output to the signal processing unit 100. Here, the digital video signal is a digital signal related to video that the DTV 1 can output, and the audio signal is a digital signal related to audio that the DTV 1 can output. The data signal is a digital signal indicating various information about the demodulated service. The various information about the service includes information (for example, service ID) for identifying the demodulated service. Using this information, the control unit 156 creates a receivable frequency table (service list) that is a table indicating the correspondence between the received broadcast wave frequency (channel) and the service, and stores this table in the flash memory 160. ing. The control unit 156 performs processing based on the receivable frequency table when tuning the broadcast wave desired by the user. The receivable frequency table will be described in detail later with reference to FIG.

  The input terminal 149 supplies a terrestrial digital television broadcast signal received by the terrestrial digital broadcast receiving antenna 148 to the terrestrial digital broadcast tuner 150. The tuner 150 has two tuners, a first tuner 150a and a second tuner 150b. The first tuner 150a and the second tuner 150b of the tuner 150 each tune the received digital broadcast signal, and transmit the tuned digital broadcast signal to an OFDM (Orthogonal Frequency Division Multiplexing) demodulator 151. . The OFDM demodulator 151 demodulates the TS and supplies the demodulated TS to the corresponding TS decoder 147b. The TS decoder 147b decodes the TS into a digital video signal, an audio signal, etc., and then performs signal processing. This is output to the unit 100. The terrestrial digital television broadcast acquired by each of the first tuner 150a and the second tuner 150b of the tuner 150 is simultaneously converted into a digital video signal, a sound digital audio signal, and two by an OFDM demodulator 151 and a TS decoder 147b, respectively. And can be output to the signal processing unit 100 after being decoded as a digital signal including a data signal.

  The antenna 148 can also receive terrestrial analog broadcast signals. The received terrestrial analog broadcast signal is distributed by a distributor (not shown) and supplied to the analog tuner 168. The analog tuner 168 tunes the received analog broadcast signal and transmits the tuned analog broadcast signal to the analog demodulator 169. The analog demodulator 169 demodulates the analog broadcast signal and outputs the demodulated analog broadcast signal to the signal processing unit 100. As an example, the DTV 1 can also watch CATV by connecting a CATV (Common Antenna Television) tuner to the input terminal 149 to which the antenna 148 is connected.

  The signal processing unit 100 performs appropriate signal processing on the digital signal output from the TS decoders 147a and 147b or the control unit 156. More specifically, the signal processing unit 100 separates the digital signal into a video signal, a digital audio signal, and a data signal. The separated video signal is output to the graphic processing unit 152, and the audio signal is output to the audio processing unit 153. The signal processing unit 100 converts the broadcast signal output from the analog demodulator 169 into a video signal and an audio signal in a predetermined digital format. The digitally converted video signal is output to the graphic processing unit 152, and the audio signal is output to the audio processing unit 153. The signal processing unit 100 also performs predetermined digital signal processing on the input signal from the line input terminal 137.

  An OSD (On Screen Display) signal generation unit 154 generates an OSD signal for displaying a UI (user interface) screen and the like under the control of the control unit 156. The data signal separated from the digital broadcast signal in the signal processing unit 100 is converted into an OSD signal of an appropriate format by the OSD signal generation unit 154 and output to the graphic processing unit 152.

  The graphic processing unit 152 performs a decoding process on the digital video signal output from the signal processing unit 100. The decoded video signal is combined with the OSD signal output from the OSD signal generation unit 154 to be combined and output to the video processing unit 155. The graphic processing unit 152 can also selectively output the decoded video signal or OSD signal to the video processing unit 155.

  The video processing unit 155 converts the signal output from the graphic processing unit 152 into an analog video signal in a format that can be displayed on the display unit 120. The video signal converted into analog is displayed on the display unit 120.

  The audio processing unit 153 converts the input audio signal into an analog audio signal in a format that can be reproduced by the speaker 110. The audio signal converted into analog is output to the speaker 110 and reproduced.

  The LAN terminal 131 is connected to the control unit 156 via the LAN I / F 164. The LAN terminal 131 is used as a general LAN-compatible port using Ethernet (registered trademark). In this embodiment, a LAN cable is connected to the LAN terminal 131 so that it can communicate with the Internet 3.

  A USB (Universal Serial Bus) terminal 133 is connected to the control unit 156 via the USB I / F 166. The USB terminal 133 is used as a general USB compatible port. For example, a mobile phone, a digital camera, a card reader / writer for various memory cards, an HDD, a keyboard, and the like are connected to the USB terminal 133 via a hub. The control unit 156 can perform communication (transmission / reception) of information with a device connected via the USB terminal 133.

  The HDD 170 is a magnetic storage medium built in the DTV 1 and has a function of storing various information possessed by the DTV 1.

  Next, the receivable frequency table will be described with reference to FIG.

  FIG. 2 is a conceptual diagram showing an example of the receivable frequency table 21 in the present embodiment.

  The receivable frequency table 21 is a table created by the control unit 156. In this table, a service provided by a broadcasting station and a channel (frequency) capable of receiving this service are associated with each other.

  Channels are assigned to services provided by broadcast stations. This channel is a predetermined frequency band, and the tuner 150 can acquire each service by tuning the received broadcast wave based on the channel information. Further, the data signal for the acquired service includes information for identifying the service as described above. The control unit 156 creates the receivable frequency table 21 based on the acquired channel information of the service and information for identifying this service.

  For example, the receivable frequency table 21 shown in FIG. 2 indicates that the A broadcast can be received on 27 channels, and the remote control channel “1” is assigned to the A broadcast. Note that the channel assigned to each service may differ depending on the region.

The channel allocated to each service may be changed by channel repacking. As described above, when the channel assigned to the service is changed, the control unit 156 tunes the service based on the previous receivable frequency table 21 stored in the flash memory 160. can not get. In other words, in order to acquire the service in this case, it is necessary to search for a channel on which the service is provided by tuning to all channels that can be received by terrestrial digital broadcasting (this search operation). Is also referred to as rescan below). As a result of this rescan, it is necessary to confirm whether or not there is a desired service among the services that have been discovered. When searching for only a desired service, rescanning may be interrupted as soon as the desired service is found.

  The DTV 1 in the present embodiment performs rescanning when a desired service cannot be acquired as a result of tuning based on the receivable frequency table 21. The processing related to this rescan will be described below.

  FIG. 3 is a flowchart showing an example of processing related to rescanning in the present embodiment.

  When the user selects a predetermined service for viewing using the remote controller 117 or the like, the control unit 156 determines whether or not the selected service can be received on the channel stored in the receivable frequency table 21 (step S1). S301). Here, the determination as to whether or not reception is possible refers to determination as to whether or not the selected service is receivable on a channel associated with the receivable frequency table 21. Specifically, it is a determination as to whether or not a signal can be received when tuning to the associated channel.

  When reception is possible in step S301 (step S301: Yes), the processing related to rescanning ends.

  When reception is not possible in step S301 (step S301: No), the control unit 156 then determines whether or not reception is impossible due to a malfunction such as an antenna (step S302). As a specific process in step S302, the service is different from the service selected by the user and cannot be received, and one or more services (other services stored in the receivable frequency table 21) are used. This means that a tuning operation is performed, thereby determining whether or not a service can be received.

  When a service different from the service selected by the user cannot be received, the control unit 156 determines that this is not caused by channel repacking but a problem such as an antenna (step S302: Yes), and the control unit 156 re-executes the service in the present embodiment. The process related to scanning ends. At this time, it may be displayed on the display unit 120 as an alert that there is a possibility that there is a cause in the antenna or the like.

  When there is a receivable service other than the service selected by the user, the control unit 156 determines that this is not caused by a malfunction of the antenna or the like (step S302: No), and channel repacking may have been performed. The alert indicating the sex and the icon for rescanning are displayed (step S303). An example of the alert and icon display 41 displayed on the display unit 120 in step S303 is shown in FIG. The alert and icon display 41 is displayed on the display unit 120 as an OSD by rendering the image signal drawn by the control unit 156 and outputting the rendered image signal to the OSD signal generation unit 154.

  When the alert and icon display 41 is displayed in step S303, the control unit 156 enters a state of accepting an operation as to whether or not to execute rescanning (step S304).

  In step S304, when an operation that does not execute rescanning is accepted, or when an operation that executes rescanning is not accepted (step S304: No), the processing related to rescanning ends.

  In step S304, when an operation for executing rescanning is received (step S304: Yes), the control unit 156 executes rescanning (step S305). In the rescan processing here, the control unit 156 performs rescan by the tuner 150 and detects whether or not there is a channel capable of receiving a signal among the channels (the tuner used at this time is the first Either of the tuner 150a and the second tuner 150b may be used). When there is a channel capable of receiving the signal, the control unit 156 extracts information for identifying the service from the data signal in the signal, and detects whether or not it matches the service in the receivable frequency table 21.

  If all the services registered in the receivable frequency table 21 have been detected as a result of performing the rescan in step S305 (step S306: Yes), the control unit 156 determines whether to apply the rescan result. Is displayed for the user to select (step S307). FIG. 5 shows an example of a display 51 for allowing the user to select whether or not to apply the rescan result. The display 51 is also displayed on the display unit 120 as the OSD by drawing the image of the image drawn by the control unit 156 and outputting the drawn image to the OSD signal generation unit 154 in the same manner as the display 41.

  When the display 51 is displayed in step S307, the control unit 156 enters a state of accepting an operation as to whether or not to apply the rescan result (step S308).

  In step S308, when an operation for applying the rescan result is received (step S308: Yes), the control unit 156 applies the rescan result (step S309). Specifically, when an operation for applying the rescan result is received from the user, the rescan result is reflected in the receivable frequency table 21 stored in the flash memory 160. In other words, the table is rewritten so that the channel information of each service detected by the rescan is a channel corresponding to each service in the receivable frequency table 21. When step S309 is completed, a series of processes related to the rescan performed by the DTV 1 is completed. Then, although not shown in FIG. 3, the predetermined service selected by the user for viewing thereafter is received on the channel stored in the updated receivable frequency table 21.

  As a result of performing the rescan in step S305, it is a case where not all services registered in the receivable frequency table 21 have been detected (step S306: No), and the predetermined service selected by the user for viewing Is not detected (step S310: No), the control unit 156 displays that there is a possibility that the broadcast wave may not be received for reasons other than channel repacking (for example, stoppage or the like). (Step S311). An example of a display 61 indicating that there is a possibility that broadcast waves cannot be received for reasons other than this channel repacking is shown in FIG.

  After displaying in step S311, and when an operation not applying the rescan result is accepted in step S308 (step S308: No), the control unit 156 discards the rescan result (step S312). The control unit 156 holds the result in the RAM 158 when the rescan is executed. In step S312, discarding the rescan result refers to a process of deleting the rescan result held in the RAM 158 without reflecting it in the receivable frequency table 21 of the flash memory 160.

  When the rescan result is discarded in step S312, the series of processes related to the rescan performed by the DTV 1 is completed.

  As a result of performing the rescan in step S305, it is a case where not all services registered in the receivable frequency table 21 have been detected (step S306: No), and the predetermined service selected by the user for viewing Can be detected (step S310: Yes), a service 71 that can be detected by the rescan is displayed, and a display 71 for allowing the user to select whether to apply this result is displayed on the display unit 120 (step S313). FIG. 7 shows an example of a display 71 that shows the services that can be detected by this rescanning and that allows the user to select whether to apply this result. Here again, the DTV 1 displays the display 71 as the OSD by the same processing as described above.

  When the display 71 is displayed in step S313, the control unit 156 is in a state of accepting an operation as to whether to apply the rescan result (step S314).

  In step S314, when an operation for applying the detected rescan result is received (step S314: Yes), the control unit 156 applies the detected rescan result (step S315). Specifically, when an operation for applying a rescan result is received from the user, the receivable frequency table 21 stored in the flash memory 160 is updated as a result of applying the rescan result, as described above. . For the remaining services that could not be detected, the contents of the receivable frequency table 21 are not updated. When step S315 is completed, a series of processes related to the rescan performed by the DTV 1 ends.

  In step S314, when an operation that does not apply the detected rescan result is accepted (step S314: No), the process flow proceeds to step S312. When step S312 (discarding the scan result) is completed, the series of processes is ended. Become.

  By the above processing, when the user tries to view the DTV 1, it is possible to suggest the possibility that the channel repacking has been performed for the DTV 1 user, and it is possible to automatically cope with the channel repacking.

  In the above process, a process for determining whether or not the current time is not the broadcast stop time may be inserted between the processes in steps S301 and 302. The determination as to whether or not the current time is not the broadcast stop time is specifically a determination as to whether or not the current time is from 7:00 to 24:00. When the current time is from 7 o'clock to 24 o'clock, the control unit 156 determines that the current time is not the broadcast stop time, and the process flow proceeds to S302. If the current time does not fall between 7 o'clock and 24 o'clock, it is determined that the current time is the broadcast stop time, and the processing flow ends. The channel repacking work may be performed at night. If the time period during which the service selected by the DTV 1 cannot be received is the broadcast stop time period, the reason is that the service cannot be received because it falls at night. There is a high possibility that the reason is not. For example, when the service cannot be received in the morning or the like, it is highly possible that the service cannot be received due to the channel repacking performed at night, and it is highly meaningful to execute the processing after S302, but the service is received at night. If this is not possible, it is less meaningful to execute the processing from S302 onward for the reasons described above. For these reasons, a process for determining whether or not the current time is not the broadcast stop time may be inserted between the processes in steps S301 and 302.

  In the present embodiment, the DTV 1 can execute a recording reservation for a service desired by the user. When executing the reserved recording process, the control unit 156 obtains the current time using its own RTC (Real Time Clock) (not shown), and when the recording is scheduled, the video of the reserved service and Audio is stored in HDD 170.

  Hereinafter, processing related to rescanning when the user has made a recording reservation for a specific service will be described.

  FIG. 8 is a flowchart showing an example of processing related to rescanning in the present embodiment.

  Hereinafter, description of processes that are substantially the same as those described in detail in the description of FIG. 3 will be omitted as appropriate.

  First, when the recording reservation is set by the user, the control unit 156 acquires the current time by the RTC and waits until the time when the reserved recording is started (step S801).

  The controller 156 continues to stand by until the scheduled recording start time comes in step S801 (step S801: No), and when the scheduled recording start time comes (step S801: Yes), the controller 156 is reserved for recording. It is determined whether the service can be received on the channel stored in the receivable frequency table 21 (step S802).

  When reception is possible in step S802 (step S802: Yes), the process relating to the rescan here ends, and the control unit 156 executes the recording process as usual.

  When reception is not possible in step S802 (step S802: No), the control unit 156 then determines whether or not reception is impossible due to a malfunction such as an antenna (step S803).

  When it is determined that the inability to receive is caused by a malfunction of the antenna or the like (step S803: Yes), the processing relating to the rescan here ends.

  When it is determined in step S803 that the reception failure is not caused by a problem such as an antenna (step S803: No), the control unit 156 performs a rescan to search for a service reserved for recording (step S803). S804).

  As a result of performing the rescan in step S804, if the service reserved for recording is not detected (step S805: No), the processing relating to the rescan is ended, and if the service is detected ( In step S805: Yes), the recording process of this service is executed based on the detection result (step S806).

  Next, the control unit 156 temporarily stores the rescan result (step S807). The temporary storage here may be stored in the RAM 158, or the result may be stored in a location different from the receivable frequency table 21 of the flash memory 160.

  When step S807 ends, the DTV 1 waits until the user turns on the power (step S807).

  When the power is turned on in step S807 (step S807: Yes), the processing flow proceeds to step S303 in FIG.

  In the present embodiment, the control unit 156 determines whether or not the service can be received when executing the scheduled recording, thereby reducing the possibility that the recording reservation will fail due to the channel repacking. Can do.

  In the processing flow shown in FIG. 8 as well, a process for determining whether or not the current time is not the broadcast stop time may be inserted between the processes in steps 802 and S803 as in FIG.

  Next, a modified example in the present embodiment will be described.

  In this modification, processing such as rescanning is executed using two tuners.

  FIG. 9 is a flowchart showing an example of processing related to rescanning in the present modification.

  With respect to this modification, the description is omitted when the process substantially similar to that of the above-described embodiment is executed, and different points are mainly described.

  First, when the user selects a predetermined service for viewing using the remote controller 117 or the like, the control unit 156 determines whether or not the selected service is receivable on the channel stored in the receivable frequency table 21. (Step S901).

  When reception is possible in step S901 (step S901: Yes), the processing relating to rescanning ends here.

  When reception is not possible in step S901 (step S901: No), the control unit 156 then determines whether or not reception is impossible due to a malfunction such as an antenna (step S902).

  When it is determined that the inability to receive is caused by a malfunction of the antenna or the like (step S902: Yes), the process relating to the rescan here ends.

  When it is determined that the inability to receive is not caused by a problem such as an antenna (step S902: No), an alert indicating the possibility of channel repacking and an icon for rescanning are displayed (step S903). ).

  When the alert and the icon are displayed in step S903, the control unit 156 enters a state of accepting an operation as to whether or not rescanning is executed (step S904).

  In step S904, when an operation that does not execute rescanning is accepted, or when an operation that executes rescanning is not accepted (step S904: No), the processing related to rescanning here ends.

  In step S904, when an operation for executing rescanning is received (step S904: Yes), the control unit 156 performs rescanning of the selected service using the first tuner 150a (step S905).

  When rescanning is started in step S905, the control unit 156 displays on the display unit 120 that rescanning is being performed (step S906).

  When the service can be detected as a result of rescanning the selected service by the rescan process in S905 (step S907: Yes), the DTV 1 displays the service selected using the first tuner 150a ( Step S908).

  When the service is displayed in step S908, the control unit 156 performs rescanning of all services using the second tuner 150b (step 909). At this time, the rescan of the already detected service is not executed (for example, when scanning in the order of the low frequency (channel), the rescan on the higher side of the frequency (channel) up to the already detected service is executed. ) Or may be scanned again with other services.

  When the service is not detected as a result of rescanning the selected service by the rescan processing in S905 (step S907: No), or in step S909, the rescan using the second tuner 150b is completed. Then, the processing flow proceeds to step S306 in FIG. 3 of the above embodiment.

  In the present modification, the service selected using the first tuner 150a is rescanned first, and when the rescan is successful, the service is displayed. Then, since the second tuner 150b is used to display the selected service and another service is re-scanned, the waiting time of the user due to the re-scan until the selected service is displayed is reduced. Can do.

  In this modification, the re-scanning of the selected service is performed using the first tuner 150a and the selected service is acquired, and the re-scanning of all the services is performed using the second tuner 150b. However, the present invention is not limited to this. Which tuner is used for which process can be changed as appropriate according to the design.

  Next, processing related to rescanning in the case where the user has made a recording reservation for a specific service in the present modification will be described.

  FIG. 10 is a flowchart showing an example of processing related to rescanning in the present modification.

  First, when the recording reservation is set by the user, the control unit 156 acquires the current time by the RTC and waits until the time when the reserved recording is started (step S1001).

  Until the start time of the reserved recording comes in step S1001 (step S1001: No), the control unit 156 keeps waiting, and when the start time of the reserved recording comes (step S1001: Yes), the control unit 156 is reserved for recording. It is determined whether or not the current service is receivable on the channel stored in the receivable frequency table 21 (step S1002).

  When reception is possible in step S1002 (step S1002: Yes), the processing relating to rescanning here ends, and the control unit 156 executes recording processing as usual.

  When reception is not possible in step S1002 (step S1002: No), the control unit 156 determines whether or not the reception is impossible due to a malfunction such as an antenna (step S1003).

  When it is determined that the inability to receive is caused by a malfunction of the antenna or the like (step S1003: Yes), the processing relating to rescanning here ends.

  When it is determined in step S1003 that the reception failure is not caused by a problem such as an antenna (step S1003: No), the control unit 156 uses the first tuner 150a to determine the service reserved for recording. A rescan is executed (step S1004).

  As a result of performing the rescan in step S1004, if the service reserved for recording is not detected (step S1005: No), the processing related to the rescan here ends, and if the service is detected ( In step S1005: Yes), based on the detection result, the first tuner 150a is used to execute the recording process for this service (step S1006).

  When the execution of recording is started in step S1006, the control unit 156 performs rescanning of all services using the second tuner 150b (step S1007).

  Next, the control unit 156 temporarily stores the rescan result in step S1007 (step S1008).

  When step S1008 ends, the DTV 1 waits until the user turns on the power (step S1009).

  While the power is not turned on in step S1009 (step S1009: No), the standby is continued. When the power is turned on in step S1009 (step S1009: Yes), the processing flow goes to step S306 in FIG. 3 in the above embodiment. move on.

    Note that if all the services cannot be detected in the temporarily stored rescan result, it is more preferable to execute the processing of S305 in FIG. 3 and check the latest status.

  In this modified example, if a service to be recorded cannot be detected at the time of recording reservation, the rescan process is executed using a recording time and using a tuner different from the tuner used for recording. As a result, the rescan process after the user turns on the power can be omitted, and the user does not have to wait for the rescan process.

  In this modification, it is possible to shorten the waiting time of the user due to the rescan process. In other words, it is possible to follow the change of the broadcast frequency without significantly impairing the convenience of user service acquisition.

Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 ... DTV, 110 ... Speaker, 120 ... Display part, 100 ... Signal processing part, 116 ... Operation part, 117 ... Remote controller, 118 ... Light receiving part, 119 ... Memory card, 131 ... LAN terminal, 133 ... USB terminal, 137 ... Line input terminal, 143 ... antenna, 144 ... input terminal, 145 ... tuner, 146 ... PSK demodulator, 147 ... TS decoder, 148 ... antenna, 149 ... input terminal, 150 ... tuner, 150a ... first tuner, 150b ... second tuner, 151 ... OFDM demodulator, 152 ... graphic processing unit, 153 ... audio processing unit, 154 ... OSD signal generation unit, 155 ... video processing unit, 156 ... control unit, 157 ... ROM, 158 ... RAM 159 ... CPU, 160 ... flash memory, 164 ... LAN I / F, 166 ... USB I / F, 168 ... Analog tuner, 169 ... Analog demodulator, 170 ... HDD, 21 ... Receivable frequency table, 41 ... Display, 51 ... Display, 61 ... Display, 71 ... Display.

Claims (8)

Receiving means for receiving the service;
Recording means for automatically executing recording of a predetermined service at a predetermined time;
Rescanning means for performing rescanning of the predetermined service when the predetermined service which is a recording target in the recording means cannot be received;
Control means for causing the receiving means to receive the predetermined service based on the result of the rescan when the rescan means detects the predetermined service, and causing the recording means to perform recording of the predetermined service;
A broadcast receiving apparatus comprising: A first discriminating unit that discriminates whether or not the predetermined service, which is a recording target of the recording unit, can be received;
The broadcast receiving apparatus according to claim 1, wherein the rescan unit performs a rescan of the predetermined service based on a determination result of the determination unit. The receiving means further comprises second determining means for determining whether or not the predetermined service, which is a recording target in the recording means, cannot be received due to an antenna failure,
2. The broadcast receiving apparatus according to claim 1, wherein the rescanning unit executes the rescanning when it is determined that the reason why the second determination unit cannot receive the predetermined service is an antenna malfunction. The first tuner,
A second tuner,
A rescan means to perform a rescan of the service;
Processing means for executing a predetermined process using the first tuner based on a result of the rescan executed by the rescan means,
The rescanning unit is a broadcast receiving device that executes a rescan of a service using the second tuner when the processing unit executes the predetermined process.   The broadcast receiving apparatus according to claim 4, wherein the predetermined process is a process of displaying the service. The processing means comprises recording means for automatically executing recording of a predetermined service at a predetermined time,
The rescanning unit is a recording target in the recording unit, and when the predetermined service cannot be received, performs rescanning of the predetermined service,
When the predetermined service can be detected by the rescan unit, the recording unit executes the recording of the predetermined service using the first tuner based on the result of the rescan, and the rescan unit The broadcast receiving apparatus according to claim 4, further comprising a control unit that executes re-scanning of a service using the second tuner. Automatically record a specific service at a predetermined time,
When the predetermined service that is a recording target in the recording cannot be received, re-scanning the predetermined service is performed,
When the predetermined service is detected by the rescan, a rescan method for executing recording of the predetermined service on the recording unit based on a result of the rescan. Let the recording means automatically execute recording of a predetermined service at a predetermined time,
When the predetermined service which is the recording target in the recording unit cannot be received by the rescan unit, the rescan unit is caused to execute a rescan of the predetermined service,
When the rescanning unit detects the predetermined service, the program causes the receiving unit to receive the predetermined service based on the result of the rescanning, and causes the recording unit to perform recording of the predetermined service.

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