JP2006197197A - Device, method, and program for receiving digital broadcast - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiving device which is capable of surely updating device programs, without being affected by its operating state and switch-on state, and of reducing its power consumption. <P>SOLUTION: A CPU 51 acquires SDTT, using either of two systems of front ends 11 and 12 and transport decoders 21 and 22, and furthermore, the device programs are acquired at a download start time specified by the acquired SDTT using either system which is not used for the reception processing of programs and stored to a flash ROM 53. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a digital broadcast receiving apparatus that receives a digital broadcast signal on which a device program used by itself is superimposed, a digital broadcast receiving method thereof, and a digital broadcast receiving program.

  In recent years, digitalization of broadcasting has been promoted, and digital broadcasting signals are transmitted by BS broadcasting, CS broadcasting, CATV broadcasting, and terrestrial broadcasting, so that programs with higher image quality can be viewed. Various information is superimposed on the digital broadcast signal, and additional information such as individual user key information is periodically transmitted.

  As a conventional digital broadcast receiving apparatus that receives the additional information, for example, a stream packet processor that extracts the additional information, a DRAM that stores the additional information, and a host processor that performs circuit control for viewing according to the additional information. There is a digital broadcast receiving apparatus provided (see, for example, Patent Document 1).

  In this digital broadcast receiving apparatus, in the standby state, when notified that the additional information is extracted from the stream packet processor in the low power consumption mode, the host processor changes to the normal power mode and extracts the additional information extracted. Is written in the DRAM, and after the writing is completed, the mode is changed to the low power consumption mode. Thereby, additional information can be updated while suppressing power consumption as much as possible in the standby state.

  In addition, the above-mentioned digital broadcast is also superimposed with a device program used for improving the function of the digital broadcast receiving device, correcting defects, etc., and the conventional digital broadcast receiving device has a download function for updating the device program. Is provided.

  FIG. 5 is a block diagram showing a configuration of a conventional digital broadcast receiving apparatus having a download function. 5 includes a front end 111, a transport decoder 121, an AV decoder 131, an output processing unit 141, a CPU (central processing unit) 151, a RAM (random access memory) 152, a flash ROM (read). Only memory) 153, an RTC (real time clock module) 154, and a remote control receiver 155.

  A digital broadcast signal received by the antenna AT is input to the front end 111. The front end 111 tunes to a target frequency and performs demodulation using a demodulation method corresponding to the broadcast method. Data output from the front end 111 is generally in the MPEG2-TS format and is input to the transport decoder 121. The transport decoder 121 extracts the video stream and audio stream of the target program from the MPEG-TS. The video stream and audio stream output from the transport decoder 121 are input to the AV decoder 131. The AV decoder 131 decodes the video stream and the audio stream and outputs video data and audio data. The decoded video data and audio data are input to the output processing unit 141. The output processing unit 141 converts the video data and audio data into analog or digital video signals VS and audio signals AS and outputs them to a display device (not shown) or the like.

  The CPU 151 controls operations of the front end 111, the transport decoder 121, the AV decoder 131, and the output processing unit 141. The flash ROM 153 is a rewritable nonvolatile memory and stores in advance a device program used for the operation of the CPU 151, and the RAM 152 is used as a main storage device of the CPU 151. The RTC 154 notifies the CPU 151 of the current time information. The remote control receiving unit 155 receives an operation command or the like transmitted from the remote control RC from the user and notifies the CPU 151 of it.

  In the digital broadcast receiving apparatus configured as described above, the device program is updated as follows by the download function. First, when the user operates the remote controller RC to transmit a power off command, the remote control receiving unit 155 notifies the CPU 151 of the power off command.

  Next, the CPU 151 acquires SI (Service Information) from the transport decoder 121, and extracts an SDTT (Software Download Trigger Table) in which information related to the transmission schedule of the device program is described from the acquired SI.

  Next, the CPU 151 checks whether or not the device program for its model is scheduled to be downloaded from the SDTT, and whether or not the currently used device program needs to be updated. When downloading of the device program of the own model is scheduled and the update of the currently used device program is necessary, the CPU 151 determines an appropriate transmission time from the SDT transmission schedule, and the device having this transmission time is determined. Set the timer process for downloading the program. Thereafter, the CPU 151 turns off the power of the front end 111, the transport decoder 121, the AV decoder 131, and the output processing unit 141, and shifts to a standby state.

After the above processing, when the timer activation time comes, the CPU 151 selects the front end 111 for the channel through which the device program is transmitted, and downloads the device program of its own model via the transport decoder 121. Next, the CPU 151 stores the downloaded new device program in the flash ROM 153 to update the device program, and then executes an initialization process to operate with the new device program.
JP-A-11-98480 (page 4-10, FIG. 1)

  However, when the device program is updated as described above, it is necessary to use the front end 111 and the transport decoder 121 in order to acquire the SDTT and the device program. However, when a normal program is viewed and the front end 111 and the transport decoder 121 are used to receive the program, the device program cannot be acquired.

  Further, in order to acquire the device program as described above, the CPU 151, the RAM 152, the flash ROM 153, the RTC 154, and the remote control receiving unit 155 need to be energized while the apparatus is in a standby state. If the power supply of the entire apparatus is turned off to further reduce power, the CPU 151, RAM 152, flash ROM 153, RTC 154, and remote control receiving unit 155 are not energized, and the device program cannot be acquired.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a digital broadcast receiving apparatus capable of reliably updating a device program and being able to reduce the power consumption of the apparatus without being affected by the use state and energization state of the apparatus, and its digital A broadcast reception method and a digital broadcast reception program are provided.

  A digital broadcast receiving apparatus according to the present invention is a digital broadcast receiving apparatus that receives a digital broadcast signal on which an apparatus program used in the apparatus is superimposed, and the apparatus program and the apparatus are received from the received digital broadcast signal. Using the first and second extraction means capable of extracting schedule information relating to the transmission schedule of the program, the information acquisition means for acquiring schedule information, and the information acquisition means using one of the first and second extraction means Program acquisition means for acquiring the device program of the apparatus using one of the first and second extraction means at the transmission time of the apparatus program of the apparatus specified by the schedule information. is there.

  The digital broadcast receiving apparatus according to the present invention uses one of the first and second extraction means capable of extracting the device program and the schedule information related to the transmission schedule of the device program from the received digital broadcast signal. Further, using one of the first and second extracting means, the device program is acquired at the transmission time of the device program specified by the acquired schedule information. Therefore, even when one of the first and second extraction means is used for the program receiving process, the device program can be acquired using the other. Further, even when the user turns off the entire apparatus when the apparatus is not used, the schedule information can be acquired and the device program can be acquired when the user is using the apparatus or in a standby state. it can. As a result, it is possible to reliably acquire and update the device program without being affected by the use state and the energization state of the device, and the user can turn off the power of the entire device as necessary to consume the device. Electric power can be reduced.

  The information acquisition means preferably acquires schedule information when the power of the apparatus is turned on. In this case, since the schedule information is acquired when the power of the apparatus is turned on, the schedule information can be reliably acquired.

  The information acquisition means preferably acquires the schedule information repeatedly when the power of the apparatus is turned on. In this case, even after the schedule information is acquired, even if the user turns off the power of the entire apparatus and cannot acquire the device program at the transmission time specified by the schedule information, the schedule information is repeatedly acquired thereafter. The device program can be reliably acquired when the entire power supply is not turned off.

  The information acquisition means preferably starts the program acquisition means in accordance with the transmission time of the device program of the apparatus specified by the acquired schedule information after acquiring the schedule information. In this case, the program acquisition unit is automatically activated in accordance with the transmission time of the device program specified by the acquired schedule information, and the device program is surely acquired without making the user aware of the operation of acquiring the device program. Can be acquired.

  Preferably, the program acquisition means acquires the device program by using one of the first and second extraction means that is not used for the program reception process. In this case, even when one of the first and second extracting means is used for the program receiving process, the device program can be reliably obtained using the other.

  If both the first and second extraction means are used for program reception processing during the transmission time of the device program, the program acquisition means stops acquisition of the device program, and the information acquisition means stores the schedule information. It is preferable to acquire again.

  In this case, even when the first and second extraction means are used for the program reception process during the transmission time of the device program and the device program cannot be acquired, the acquisition of the device program is stopped, and then the schedule information Since the device program can be acquired again, the device program can be acquired with certainty.

  It is preferable that the apparatus further includes a storage unit that stores the device program acquired by the program acquisition unit, and an initialization unit that initializes the apparatus using the device program stored in the storage unit.

  In this case, the acquired device program is stored in the storage means, and the apparatus can be initialized using the stored device program, so that the initialization process can be performed at an arbitrary time, For example, initialization processing can be performed when program reservation is not performed, and program reservation information can be prevented from being erased unnecessarily.

  The apparatus further includes accepting means for accepting a power-off instruction for the apparatus by the user, and the initialization means uses the device program stored in the storage means when the accepting means accepts the power-off instruction. After the initialization, it is preferable to stop the power supply to the first and second extraction means.

  In this case, when a power-off instruction is received from the user, the power supply to the first and second extraction means is stopped after the apparatus is initialized using the stored device program. The initialization process can be performed when the user does not use the apparatus, and the initialization process can be automatically performed without making the user aware of the initialization process.

  A digital broadcast receiving method according to the present invention includes first and second extraction means capable of extracting device information used by itself and schedule information relating to a transmission schedule of the device program from a received digital broadcast signal. A digital broadcast receiving method of a receiving apparatus, for an apparatus specified by an information acquisition step of acquiring schedule information using one of first and second extraction means, and schedule information acquired by the information acquisition means And a program acquisition step of acquiring a device program using one of the first and second extraction means during the program transmission time.

  The digital broadcast receiving program according to the present invention includes first and second extraction means capable of extracting device information used by itself and schedule information relating to a transmission schedule of the device program from the received digital broadcast signal, And a digital broadcast receiving program of a digital broadcast receiving device comprising a CPU for controlling the second extracting means, information acquiring means for acquiring schedule information using one of the first and second extracting means, A device that causes the CPU to function as a program acquisition unit that acquires a device program using one of the first and second extraction units during the transmission time of the device program specified by the schedule information acquired by the information acquisition unit It is.

  According to the present invention, even when one of the first and second extraction means is used for program reception processing, the other can be used to acquire the device program, and the user can use the power supply for the entire apparatus. Even when the device is turned off, when the user is using the device or in the standby state, it is possible to acquire the schedule information and acquire the device program, so that it is not affected by the use state and the energization state of the device. The device program can be reliably updated, and the user can reduce the power consumption of the apparatus by turning off the power supply of the entire apparatus as necessary.

  Hereinafter, a digital broadcast receiving apparatus according to the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a digital broadcast receiving apparatus according to an embodiment of the present invention.

  1 includes two front ends 11 and 12, two transport decoders 21 and 22, two AV decoders 31 and 32, an output processing unit 41, a CPU 51, a RAM 52, and a flash ROM 53. , RTC 54 and remote control receiver 55 are provided.

  The digital broadcast signal received by the antenna AT is input to the two front ends 11 and 12. The front end 11 tunes to a target frequency and performs demodulation using a demodulation method corresponding to the broadcast method. Data output from the front end 11 is generally in the MPEG2-TS format and is input to the transport decoder 21. The transport decoder 21 extracts the video stream and audio stream of the target program from the MPEG-TS. The video stream and audio stream output from the transport decoder 21 are input to the AV decoder 31. The AV decoder 31 decodes the video stream and the audio stream and outputs video data and audio data. The decoded video data and audio data are input to the output processing unit 41.

  The front end 12, the transport decoder 22, and the AV decoder 32 are configured in the same manner as the front end 11, the transport decoder 21, and the AV decoder 31 and operate in the same manner. The output processing unit 41 converts the video data and audio data from the two AV decoders 31 and 32 into 2-channel analog or digital video signals VS1 and VS2 and audio signals AS1 and AS2, and displays them (not shown). Etc.

  The CPU 51 controls the operations of the front ends 11 and 12, the transport decoders 21 and 22, the AV decoders 31 and 32, and the output processing unit 41. The flash ROM 53 is a rewritable nonvolatile memory and stores in advance a device program used for the operation of the CPU 51, and the RAM 52 is used as a main storage device of the CPU 51. The RTC 54 notifies the CPU 51 of the current time information. The remote control receiving unit 55 receives an operation command or the like transmitted from the remote control RC from the user and notifies the CPU 51 of it.

  With the above configuration, the digital broadcast receiving apparatus 10 includes the two front ends 11 and 12, the transport decoders 21 and 22, and the AV decoders 31 and 32. The video signal VS1 of the two-channel program from the digital broadcast signal. , VS2 and audio signals AS1, AS2 can be output simultaneously, for example, one can be output to a display device while the other is output to a video recording device (not shown).

  Also, SI (Service Information) including SDTT, which is schedule information describing information related to the transmission schedule of the device program of the digital broadcast receiving device, and the device program of the digital receiving device are superimposed on the digital broadcast signal. Has been. Therefore, in the digital broadcast receiving apparatus 10, the SI and the device program can be extracted from the digital broadcast signal and output to the CPU 51 using one of the two systems of the front ends 11 and 12 and the transport decoders 21 and 22. For example, the SI and the device program can be acquired by using a program that is not used for reception processing while viewing the program.

  The number of front ends, transport decoders and AV decoders is not particularly limited to the above two systems, and three or more front ends, transport decoders and AV decoders may be used.

  In the present embodiment, the front ends 11 and 12 and the transport decoders 21 and 22 correspond to examples of first and second extraction means, and the CPU 51 corresponds to examples of information acquisition means, program acquisition means, and initialization means. The flash ROM 53 corresponds to an example of a storage unit, and the CPU 51 and the remote control reception unit 55 correspond to an example of a reception unit.

  Next, the device program download setting process, download execution process, and initialization process of the digital broadcast receiving apparatus 10 configured as described above will be specifically described. Each of these processes is performed by the CPU 51 or the like executing a device program (digital broadcast reception program) stored in the flash ROM 53.

  FIG. 2 is a flowchart for explaining the download setting process of the device program of the digital broadcast receiving apparatus 10 shown in FIG. As shown in FIG. 2, first, in step S1, the CPU 51 determines whether or not the main power supply is turned on. If the main power supply is turned on, the process proceeds to step S2 and the main power supply is turned on. If not, SI cannot be received and the process is terminated.

  Here, the state in which the main power is on is in response to the user pressing the power button on the apparatus body or transmitting a power-on instruction from the standby state (standby state) using the remote controller RC. Power is supplied not only to the control circuit including the CPU 51, RAM 52, flash ROM 53, RTC 54, and remote control receiver 55, but also to the front ends 11 and 12, the transport decoders 21 and 22, the AV decoders 31 and 32, and the output processor 41. , A state in which a program, SI, and a device program can be received.

  The standby state means that power is not supplied to the front ends 11 and 12, the transport decoders 21 and 22, the AV decoders 31 and 32, and the output processing unit 41, and the CPU 51, RAM 52, flash ROM 53, RTC 54, and remote control receiving unit. The control circuit consisting of 55 is in a state where power is supplied.

  When the main power source is turned on, immediately after the SI can be received, in step S2, the CPU 51 acquires the SI from one of the transport decoders 21 and 22, and relates to the transmission schedule of the device program from the acquired SI. SDTT in which information is described is extracted. Note that since the same information is transmitted by all broadcasting stations, the SDTT can be acquired from one or both of the transport decoders 21 and 22 even when they are used for viewing a program.

  Next, in step S3, the CPU 51 refers to the acquired SDTT to determine whether or not the device program for the model of the digital broadcast receiving apparatus 10 is scheduled to be downloaded, and the device program for this model is determined. If the download is scheduled, the process proceeds to step S4. If the download of the device program for this model is not scheduled, the process ends.

  If downloading of the device program for this model is scheduled, the CPU 51 confirms the version information of the device program scheduled to be downloaded in step S4 and stores the version information for the current device stored in the flash ROM 53. It is determined whether it is necessary to update the program. If it is necessary to update the device program, the process proceeds to step S5. If it is not necessary to update the device program, the process ends.

  Next, in step S5, the CPU 51 refers to the acquired SDTT, and download start time appropriate for downloading from the download schedule of the device program for this model, for example, the earliest download start time or night, early morning, etc. The download start time that is less frequently used by the user is extracted. Next, in step S6, the CPU 51 sets a scheduled process for starting a download execution process, which will be described later, as a schedule task so that the extracted device program at the download start time can be acquired, and ends the process.

  As described above, in this process, since the acquisition of the SDTT and the setting of the download execution process are performed immediately after the power of the apparatus is turned on, the SDTT can be reliably acquired and the download execution process can be reliably performed. Can be set. In addition, since the download execution process is activated according to the download start time specified by the acquired SDTT after acquiring the SDTT, the download execution process is automatically activated at the download start time, The device program can be reliably acquired without being conscious of the operation for acquiring the device program.

  In the above description, the example in which the download setting process is executed when the main power source is turned on has been described. However, the timing is not particularly limited to this timing. For example, the book setting process when the main power source is turned on or in the standby state is performed. When the apparatus is powered on, the SDTT may be repeatedly acquired at regular or irregular intervals. In this case, after acquiring the SDTT, the user turns off the power of the entire apparatus, and even if the device program cannot be acquired at the download start time specified by the SDTT, the SDTT is repeatedly acquired and the entire apparatus is then acquired. The device program can be reliably acquired when the power is not turned off.

  FIG. 3 is a flowchart for explaining the download execution process of the device program of the digital broadcast receiving apparatus 10 shown in FIG. As shown in FIG. 3, when the current time information of the RTC 54 becomes the download start time, the CPU 51 starts a download execution process in step S11.

  Next, in step S12, the CPU 51 determines whether or not both of the front ends 11 and 12 and the transport decoders 21 and 22 are used for the program receiving process. If NO is used, the process proceeds to step S13. If both are used, the process proceeds to step S17, and after executing the download setting process, the process ends.

  As described above, when both the front ends 11 and 12 and the transport decoders 21 and 22 are used for the program reception process at the download start time, the download setting process is executed again. Even when the transport decoders 21 and 22 are both used for program reception processing and cannot acquire the device program, the SDTT can be acquired again and the device program can be acquired reliably.

  Next, in step S13, the CPU 51 selects an unused front end of the transport decoders 21 and 22 as a channel for downloading a device program, and the front end is tuned to a target frequency. Data including the device program is demodulated, and a transport decoder connected to the front end extracts the device program from the demodulated data.

  Next, the CPU 51 acquires a device program from the transport decoder in step S14, writes the acquired device program in the flash ROM 53 in step S15, and updates the device program in the flash ROM 53.

  Finally, in step S16, the CPU 51 sets the download completion flag in the RAM 52 to “1” and ends the process. In this way, since the equipment program can be downloaded using the front end 11 and 12 and the transport decoders 21 and 22 which are not used for the program receiving process, the device program can be downloaded. Device programs can be downloaded even while viewing. Further, since the acquired device program is stored in the flash ROM 53 and the apparatus can be initialized using the stored device program, the initialization process can be performed at an arbitrary time. For example, when it is set to perform an initialization process described later when a program reservation is not performed, it is possible to prevent the program reservation information from being erased unnecessarily.

  FIG. 4 is a flowchart for explaining the initialization process of the device program of the digital broadcast receiving apparatus 10 shown in FIG. As shown in FIG. 4, in step S21, the CPU 51 determines whether or not the user has pressed the power button of the remote controller RC to instruct power off (whether or not the user has instructed to enter a standby state). If an instruction to turn off has been given, the process proceeds to step S22. If no instruction to turn off the power has been given, the process ends.

  When the power-off instruction is issued, in step S22, the CPU 51 checks whether or not the download completion flag in the RAM 52 is set. If the download completion flag is set, the process proceeds to step S23 to download the data. If the completion flag is not set, the process proceeds to step S25.

  If the download completion flag is set, the CPU 51 clears the download completion flag in the RAM 52 and sets “0” in step S23. Next, in step S24, the CPU 51 uses the device program stored in the flash ROM 53 to restart the system and execute initialization processing. Thereafter, the digital broadcast receiving apparatus 10 operates using the downloaded new device program.

  If the download completion flag is not set, or after the process of step S24 is completed, in step S25, the CPU 51 is a control circuit other than the CPU 51, RAM 52, flash ROM 53, RTC 54, and remote control receiver 55, that is, the front end. 11 and 12, the power supply to the transport decoders 21 and 22, the AV decoders 31 and 32, and the output processing unit 41 is stopped, and the power is turned off. The digital broadcast receiver 10 enters a standby state, and the process ends.

  As described above, when an instruction to turn off the power is received, the digital broadcast receiving apparatus 10 is initialized using the device program stored in the flash ROM 53, and then the front ends 11, 12 and the transport decoders 21, 22 are initialized. Since the power supply to the AV decoders 31 and 32 and the output processing unit 41 is stopped, the initialization process can be performed when the user does not use the digital broadcast receiver 10, and the user is made aware of the initialization process. The initialization process can be performed automatically without any problem.

  By each of the above processes, in the present embodiment, one of the two front ends 11 and 12 and the transport decoders 21 and 22 capable of extracting the SI and the device program including the SDTT from the received digital broadcast signal is used. The SDTT is acquired, and further, the device program is acquired at the download start time specified by the acquired SDTT using the one not used for the program receiving process.

  Therefore, the device program can be acquired even when one of the two front ends 11 and 12 and the transport decoders 21 and 22 is used for the program receiving process. Further, even when the user turns off the power of the entire apparatus when the digital broadcast receiving apparatus 10 is not used, the user is using the digital broadcast receiving apparatus 10 (for example, when viewing a certain program) or In the standby state, the device program can be acquired by acquiring the SDTT. As a result, the device program can be reliably updated without being affected by the use state and energization state of the device, and the user can turn off the entire device as necessary to reduce the power consumption of the device. can do.

  In the above description, the example in which the device programs stored in the flash ROM 53 are collectively updated has been described. However, the present invention is not particularly limited to this example, and only a part of the device program is updated. Also good.

  In the above description, the digital broadcast receiving device has been described as an example. However, the present invention is similarly applied to a display device or a video recording device provided with the digital broadcast receiving device as described above to obtain the same effect. be able to.

  The digital broadcast receiving apparatus according to the present invention can reliably update the device program without being affected by the use state and energization state of the apparatus, and the user can turn off the entire apparatus as necessary. Thus, the power consumption of the apparatus can be reduced, and the apparatus is useful as a digital broadcast receiving apparatus that receives a digital broadcast signal on which a device program used by itself is superimposed.

It is a block diagram which shows the structure of the digital broadcast receiver by one embodiment of this invention. It is a flowchart for demonstrating the download setting process of the program for apparatuses of the digital broadcast receiver shown in FIG. It is a flowchart for demonstrating the download execution process of the program for apparatuses of the digital broadcast receiver shown in FIG. It is a flowchart for demonstrating the initialization process of the program for apparatuses of the digital broadcast receiver shown in FIG. It is a block diagram which shows the structure of the conventional digital broadcast receiver.

Explanation of symbols

11, 12 Front end 21, 22 Transport decoder 31, 32 AV decoder 41 Output processing unit 51 CPU
52 RAM
53 Flash ROM
54 RTC
55 Remote control receiver

Claims (10)

A digital broadcast receiving device that receives a digital broadcast signal on which a device program used in the device is superimposed,
First and second extracting means capable of extracting schedule information regarding the device program and a transmission schedule of the device program from a received digital broadcast signal;
Information acquisition means for acquiring the schedule information using one of the first and second extraction means;
A program for acquiring the device program for the apparatus using one of the first and second extraction means during the transmission time of the apparatus program for the apparatus specified by the schedule information acquired by the information acquisition means. And a digital broadcast receiving apparatus.   2. The digital broadcast receiving apparatus according to claim 1, wherein the information acquisition unit acquires the schedule information when the power of the apparatus is turned on.   3. The digital broadcast receiving apparatus according to claim 1, wherein the information acquisition unit repeatedly acquires the schedule information when the power of the apparatus is turned on.   The said information acquisition means starts the said program acquisition means according to the transmission time of the program for apparatus of this apparatus specified by the acquired schedule information, after acquiring the said schedule information. 4. The digital broadcast receiver according to any one of 3 above.   The said program acquisition means acquires the said program for apparatuses using the one which is not used for the reception process of a program among the said 1st and 2nd extraction means. A digital broadcast receiver according to claim 1.   When both the first and second extraction means are used for program reception processing during the transmission time of the device program, the program acquisition means stops acquisition of the device program, and the information acquisition means The digital broadcast receiving apparatus according to claim 1, wherein the schedule information is acquired again. Storage means for storing the device program acquired by the program acquisition means;
7. The digital broadcast receiving apparatus according to claim 1, further comprising an initialization unit that initializes the apparatus using a device program stored in the storage unit. A receiving unit for receiving a power-off instruction for the apparatus from the user;
The initialization means initializes the apparatus using the device program stored in the storage means when the power-off instruction is accepted by the acceptance means, and then performs the first and second extractions. 8. The digital broadcast receiver according to claim 7, wherein power supply to the means is stopped. A digital broadcast receiving method of a digital broadcast receiving apparatus comprising first and second extraction means capable of extracting a device program used by itself and schedule information relating to a transmission schedule of the device program from a received digital broadcast signal. And
An information acquisition step of acquiring the schedule information using one of the first and second extraction means;
The device of the digital broadcast receiving apparatus uses one of the first and second extraction means at the transmission time of the device program for the digital broadcast receiving apparatus specified by the schedule information acquired by the information acquisition means. A digital broadcast receiving method comprising: a program acquisition step of acquiring a program for use. Controls the first and second extraction means capable of extracting the device program used by itself and schedule information relating to the transmission schedule of the device program from the received digital broadcast signal, and the first and second extraction means. A digital broadcast receiving program of a digital broadcast receiving device comprising a CPU for performing
Information acquisition means for acquiring the schedule information using one of the first and second extraction means;
The device of the digital broadcast receiving apparatus uses one of the first and second extraction means at the transmission time of the device program for the digital broadcast receiving apparatus specified by the schedule information acquired by the information acquisition means. A digital broadcast receiving program characterized by causing the CPU to function as a program acquisition means for acquiring a program for use.

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