JP3934091B2 - Broadcast receiver - Google Patents

Description

  The present invention relates to a broadcast receiving apparatus or a broadcast receiving method. In particular, the present invention relates to a network selection of an engineering slot for receiving download contents (additional information signal sequence) in a shared digital broadcast receiver for BS / CS (broadcast satellite / communication satellite) and terrestrial broadcast.

In the conventional downloading method of the digital broadcast receiving apparatus, the transmission side transmits an additional information signal sequence obtained by adding identification data such as manufacturer / model / software version for the receiving apparatus to the individual data to be downloaded from a predetermined engineer slot of the network. The receiving device receives the additional information signal sequence from the engineer slot of the network, separates and identifies the identification data and the individual data included in the signal sequence, and acquires the individual data required by the receiving device. It is configured as follows. (For example, see Patent Document 1)
Japanese Patent Laid-Open No. 11-232110

  Since the conventional digital broadcast receiving apparatus described above is dedicated to BS / CS, the network used as an engineering slot is fixed, and there is no need to switch to an engineering slot of a different network for downloading. However, in this case, there is a problem that it is inconvenient because it is not possible to provide a shared digital broadcast receiver for BS / CS and terrestrial broadcasting.

  In addition, when a shared digital broadcast receiving apparatus for BS / CS and terrestrial broadcasting is provided, an engineering slot for receiving additional data exists in both the BS / CS and terrestrial broadcasting networks. However, if the network is not connected, there is a problem that even the engineering slot cannot be selected.

  An object of the present invention is to receive a download of individual data in a short time and stably from both BS / CS and terrestrial broadcast networks.

A broadcast receiving apparatus according to the present invention includes a satellite receiving unit that receives a first signal from a satellite broadcast;
A terrestrial receiver that receives the second signal from the terrestrial broadcast;
A selector for selecting a first signal received by the satellite receiver and a second signal received by the terrestrial receiver;
And a processing unit for processing the signal selected by the selection unit.

  According to the present invention, there is an effect that download can be received stably in a short time.

Embodiment 1 FIG.
In the first embodiment, as an engineering slot to be downloaded, it is possible to download individual data in a short time and stably by manually or automatically switching between BS / CS and terrestrial broadcast networks. And receive.

  The digital broadcast receiving apparatus according to the first embodiment demodulates received signals of BS / CS and terrestrial broadcasts, corrects errors, outputs a transport signal sequence, and outputs from satellite broadcasts and terrestrial broadcasts. Means for switching the transport signal sequence; signal processing means for separating the transport signal sequence into video, audio and additional information signal sequences; means for extracting individual data to be downloaded from the additional information signal sequence; and storing the individual data Means for manually or automatically switching between BS / CS and terrestrial broadcast networks.

  The first embodiment will be described below with reference to the drawings.

  FIG. 1 is a configuration diagram of a digital broadcast receiving apparatus according to the first embodiment.

  The digital broadcast receiver (which is an example of a broadcast receiver) includes a satellite receiver 101, a terrestrial receiver 102, a switcher 5 (which is an example of a selector), and a processor 200.

  The satellite receiver 101 includes a satellite broadcast antenna 1 and a satellite broadcast tuner 3.

  The terrestrial receiver 102 includes a terrestrial broadcast antenna 2 and a terrestrial broadcast tuner 4.

  The processing unit 200 includes a DEMUX (demultiplexing) 6 as signal processing means for separating the transport signal sequence output from the switcher 5 into video, audio and additional information signal sequences, and the video / audio signal sequence separated by the DEMUX 6. Decoder 7 for decompression, microcomputer 8 as control means for controlling the overall operation of the system so as to execute the extraction of individual data to be downloaded from the additional information, system initialization, bootstrap process and downloading, and downloading In the mode, a RAM (Random Access Memory) 9 as a primary storage means for temporarily storing a new main program transmitted from the DEMUX 6 under the control of the microcomputer 8, and the main program and bootup under the control of the microcomputer 8. A flash memory 10 as a secondary storage means for storing a data program and a downloading program, and a data / address bus 11 for transmitting and receiving data and addresses of each part.

  The satellite receiver 101 receives the first signal from the satellite broadcast. In other words, the satellite broadcast antenna 1 receives the BS / CS, and the satellite broadcast tuner 3 demodulates the signal input from the satellite broadcast antenna 1, corrects the error, and outputs a transport signal sequence.

  The terrestrial receiver 102 receives the second signal from the terrestrial broadcast. In other words, the terrestrial broadcast antenna 2 receives the terrestrial broadcast, the terrestrial broadcast tuner 4 demodulates the signal input from the terrestrial broadcast antenna 2, corrects the error, and outputs a transport signal sequence. To do.

  The switcher 5 selects the first signal received by the satellite receiver 101 and the second signal received by the terrestrial receiver 102. In other words, the switcher 5 switches the transport signal sequence output from the satellite broadcast tuner 3 and the terrestrial broadcast tuner 4.

  The processing unit 200 processes the signal selected by the switcher 5.

  Specifically, each signal received by the satellite broadcasting antenna 1 and the terrestrial broadcasting antenna 2 is demodulated by the satellite broadcasting tuner 3 and the terrestrial broadcasting tuner 4 to correct the error and generate a transport signal sequence. Is done. One of the transport signal sequences is selected by the switcher 5 and output to the DEMUX 6. The transport signal sequence input to the DEMUX 6 is separated into a video signal sequence, an audio signal sequence, and an additional information signal sequence by a PID (program number) number. The video / audio signal sequence is input to the decoder 7 and the additional information signal sequence is input to the microcomputer 8 to extract individual data to be downloaded. The decoder 7 decompresses the video / audio signal sequence compressed in the MPEGII system and outputs video / audio (AV). Variables necessary for the microcomputer 8 to execute the program are stored in the RAM 9, and are read out and used when necessary.

  FIG. 2 is a configuration diagram of a flash memory of the digital broadcast receiving apparatus according to the first embodiment.

  The memory area of the flash memory 12 includes a boot program area 20, a loading program area 21, a main program area 22, and a version information area 23.

  FIG. 3 is a flowchart of downloading of the digital broadcast receiving apparatus according to the first embodiment.

  The microcomputer 8 is started by a loading program stored in the flash memory 10.

  Here, a satellite broadcast or terrestrial broadcast network is designated manually or automatically (S30).

  Depending on the designated network type, the transport signal sequences output from the satellite broadcast tuner 3 and the terrestrial broadcast tuner 4 are switched by the switcher 5 and output to the DEMUX 6 (S31, S32).

  The transport signal sequence input to the DEMUX 6 is separated from the additional information signal sequence by the broadcast program identification number (PID), and it is determined whether the information is addressed to the receiver by the identification information of the additional information signal sequence. (S33).

  If the information is addressed to the own receiver, individual data such as a program or common data is downloaded (S34).

  Individual data to be downloaded such as programs and common data is temporarily stored in the RAM 9. The new main program temporarily stored in the RAM 9 is written in the main program area 22 and the new version number is written in the version information area 23 of the flash memory 10 (S35), and the update of the main program is completed. Finally, the entire system is reset, the system is initialized by a new main program, and the receiver program and common data are updated.

  In the present embodiment, only one storage area for the program to be downloaded is described, but normally, there are two storage areas as a countermeasure against a program update error or the like.

  As described above, the digital broadcast receiving apparatus according to the present embodiment includes means for demodulating BS / CS and terrestrial broadcast signals, means for switching a network to which the demodulated signals are input, and the input A signal processing means for separating a signal into video, audio and additional information signal sequences; means for extracting individual data to be downloaded from the additional information; and means for storing the individual data; It is characterized by downloading data.

  According to the first embodiment, individual data can be downloaded from a required network.

Embodiment 2. FIG.
In the second embodiment, when the switcher 5 fails to process the signal selected by the switcher 5, the switcher 5 selects a signal that has not been selected, and the processor 200 The signal newly selected by the switcher 5 is processed. Each configuration in the second embodiment is the same as in FIG.

  FIG. 4 is a flowchart of downloading of the digital broadcast receiving apparatus according to the second embodiment.

  FIG. 5 is a flowchart of start a and start b.

  The microcomputer 8 is started by a loading program stored in the flash memory 10. Here, the reception schedule of the satellite broadcast and the terrestrial broadcast is managed, and the network at the start time is designated (S42).

  Here, if the network that has reached the start time is a satellite broadcast network, the process proceeds to start a and a satellite broadcast network is designated (S40). If the network at the start time is a terrestrial broadcast network, the process proceeds to start b, and a terrestrial broadcast network is designated (S41).

  The microcomputer 8 determines the network currently selected by the switcher 5, and if it is not the designated network, the switcher 5 switches to the network designated by the microcomputer 8 (S31).

  Depending on the designated network type, the transport signal sequences output from the satellite broadcast tuner 3 and the terrestrial broadcast tuner 4 are switched by the switcher 5 and output to the DEMUX 6 (S32).

  The transport signal sequence input to the DEMUX 6 is separated from the additional information signal sequence by the PID number, and it is determined whether the information is addressed to the receiver by the identification information of the additional information signal sequence (S33).

  If the information is addressed to the own receiver, individual data such as a program or common data is downloaded (S34).

  In the case of information destined for the own receiver, individual data to be downloaded such as programs and common data is temporarily stored in the RAM 9. The new main program temporarily stored in the RAM 9 is written in the main program area 22 and the new version number is written in the version information area 23 of the flash memory 10 (S35), and the update of the main program is completed. Finally, the entire system is reset, the system is initialized by a new main program, and the receiver program and common data are updated. If the selection of the download engineering slot fails, the other network is selected according to the schedule of the other network, and the download is performed again.

  As described above, in addition to the first embodiment described above, the digital broadcast receiving apparatus according to the second embodiment further selects one of the BS / CS and terrestrial broadcast networks when it cannot select the other network. The individual data is obtained from the engineering slot of the network.

  According to the second embodiment, in addition to the effects of the first embodiment, when one network cannot be selected, the individual data can be acquired from the engineering slot of the other network.

Embodiment 3 FIG.
The satellite receiver 101 measures the reception level of the received first signal, and the terrestrial receiver 102 measures the reception level of the received second signal. Then, the processing unit 200 compares the reception level of the first signal measured by the satellite reception unit 101 with the reception level of the second signal measured by the terrestrial reception unit 102, and the switcher 5 Selects a signal having a high reception level as a result of comparison by the processing unit 200. Each configuration in the third embodiment is the same as that in FIG.

  FIG. 6 is a flowchart of downloading of the digital broadcast receiving apparatus according to the third embodiment.

  The microcomputer 8 is started by a loading program stored in the flash memory 10.

  Here, the microcomputer 8 designates a network having a high reception level among the reception levels of the satellite broadcast or the terrestrial broadcast input via the satellite receiver 101 or the terrestrial receiver 102 (S50).

  The process proceeds to start a or start b depending on the designated network type. Each step in start a or start b is the same as that up to S35 in FIG. In other words, the transport signal sequence output from the satellite broadcast tuner 3 and the terrestrial broadcast tuner 4 is switched by the switcher 5 and output to the DEMUX 6. The transport signal sequence input to the DEMUX 6 is separated from the additional information signal sequence by the PID number, and it is determined whether the information is addressed to the receiver by the identification information of the additional information signal sequence. In the case of information destined for the own receiver, individual data to be downloaded such as programs and common data is temporarily stored in the RAM 9. The new main program temporarily stored in the RAM 9 is written in the main program area 22 and the new version number is written in the version information area 23 of the flash memory 10, and the update of the main program is completed. Finally, the entire system is reset, the system is initialized by a new main program, and the receiver program and common data are updated.

  As described above, in the third embodiment, the digital broadcast receiving apparatus of the first embodiment further includes means for measuring the reception level of each network of BS / CS and terrestrial broadcasting, and the reception level is high. It is characterized by acquiring individual data from an engineering slot of a network.

  According to the third embodiment, in addition to the effects of the first embodiment, stable information with a high reception level can be acquired.

Embodiment 4 FIG.
In the fourth embodiment, the switcher 5 selects a signal preset by the user. Each configuration in the fourth embodiment is the same as in FIG.

  FIG. 7 is a flowchart of downloading of the digital broadcast receiving apparatus according to the fourth embodiment.

  The microcomputer 8 is started by a loading program stored in the flash memory 10.

  Here, the microcomputer 8 or the switcher 5 designates the network according to the selection of the satellite broadcast or the terrestrial broadcast preset by the user (S60).

  The process proceeds to start a or start b depending on the designated network type. Each step in start a or start b is the same as that up to S35 in FIG. In other words, the transport signal sequence output from the satellite broadcast tuner 3 and the terrestrial broadcast tuner 4 is switched by the switcher 5 and output to the DEMUX 6. The transport signal sequence input to the DEMUX 6 is separated from the additional information signal sequence by the PID number, and it is determined whether the information is addressed to the receiver by the identification information of the additional information signal sequence. In the case of information destined for the own receiver, individual data to be downloaded such as programs and common data is temporarily stored in the RAM 9. The new main program temporarily stored in the RAM 9 is written in the main program area 22 and the new version number is written in the version information area 23 of the flash memory 10, and the update of the main program is completed. Finally, the entire system is reset, the system is initialized by a new main program, and the receiver program and common data are updated.

  As described above, in the fourth embodiment, in the digital broadcast receiving apparatus of the first embodiment, the user has means for setting the network of the engineering slot in advance, and the individual data is received from the engineering slot of the network set by the user. get.

  According to the fourth embodiment, in addition to the effects of the first embodiment, individual data can be acquired from the network of engineering slots required by the user.

Embodiment 5 FIG.
In the fifth embodiment, the processing unit 200 further sets the reception start time for the first signal received by the satellite receiving unit 101 and the second signal received by the terrestrial receiving unit 102. The second signal received by the terrestrial receiver 102 and the first signal received by the satellite receiver 101 based on the reception start time managed by the processor 200. Of these signals, the signal with the earlier reception start time is selected. Each configuration in the fifth embodiment is the same as in FIG.

  FIG. 8 is a flowchart of downloading of the digital broadcast receiving apparatus according to the fifth embodiment.

  The microcomputer 8 is started by a loading program stored in the flash memory 10.

  Here, the microcomputer 8 designates a network whose start time is early among the download schedules (S70).

  The process proceeds to start a or start b depending on the designated network type. Each step in start a or start b is the same as that up to S35 in FIG. In other words, the transport signal sequence output from the satellite broadcast tuner 3 and the terrestrial broadcast tuner 4 is switched by the switcher 5 and output to the DEMUX 6. The transport signal sequence input to the DEMUX 6 is separated from the additional information signal sequence by the PID number, and it is determined whether the information is addressed to the receiver by the identification information of the additional information signal sequence. In the case of information destined for the own receiver, individual data to be downloaded such as programs and common data is temporarily stored in the RAM 9. The new main program temporarily stored in the RAM 9 is written in the main program area 22 and the new version number is written in the version information area 23 of the flash memory 10, and the update of the main program is completed. Finally, the entire system is reset, the system is initialized by a new main program, and the receiver program and common data are updated.

  As described above, in the fifth embodiment, the digital broadcast receiving apparatus according to the first embodiment has means for managing the download schedule, and the start time of download is early among BS / CS and terrestrial broadcasting. Individual data is acquired from the slot.

  According to the fifth embodiment, in addition to the effects of the first embodiment, individual data can be efficiently acquired from an engineering slot whose download start time is early.

Embodiment 6 FIG.
In the sixth embodiment, the processing unit 200 further sets an end time of reception of the first signal received by the satellite receiving unit 101 and the second signal received by the terrestrial receiving unit 102. The switcher 5 manages the first signal received by the satellite receiver 101 and the second received by the terrestrial receiver 102 based on the reception end time managed by the processor 200. Of these signals, the signal with the earlier reception end time is selected. Each configuration in the sixth embodiment is the same as in FIG.

  FIG. 9 is a flowchart of downloading of the digital broadcast receiving apparatus according to the sixth embodiment.

  The microcomputer 8 is started by a loading program stored in the flash memory 10.

  Here, the microcomputer 8 designates a network having an earlier end time among the download schedules (S80).

  The process proceeds to start a or start b depending on the designated network type. Each step in start a or start b is the same as that up to S35 in FIG. In other words, the transport signal sequence output from the satellite broadcast tuner 3 and the terrestrial broadcast tuner 4 is switched by the switcher 5 and output to the DEMUX 6. The transport signal sequence input to the DEMUX 6 is separated from the additional information signal sequence by the PID number, and it is determined whether the information is addressed to the receiver by the identification information of the additional information signal sequence. In the case of information destined for the own receiver, individual data to be downloaded such as programs and common data is temporarily stored in the RAM 9. The new main program temporarily stored in the RAM 9 is written in the main program area 22 and the new version number is written in the version information area 23 of the flash memory 10, and the update of the main program is completed. Finally, the entire system is reset, the system is initialized by a new main program, and the receiver program and common data are updated.

  As described above, in the sixth embodiment, the digital broadcast receiving apparatus according to the first embodiment has a means for managing the download schedule, and an engineering with an earlier download end time among BS / CS and terrestrial broadcasting. Individual data is acquired from the slot.

  According to the sixth embodiment, in addition to the effects of the first embodiment, individual data can be acquired from an engineering slot whose download end time is early. Therefore, it is possible to save as much as possible other data to be downloaded that has occurred after the start of downloading. In addition, since the download end time is early, it is possible to avoid waiting for the user to acquire the individual data.

  In the above description, each embodiment may be configured to be used partially or in combination.

1 is a configuration diagram of a digital broadcast receiving apparatus according to Embodiment 1. FIG. 1 is a configuration diagram of a flash memory of a digital broadcast receiving device according to Embodiment 1. FIG. 3 is a flowchart of downloading of the digital broadcast receiving apparatus according to the first embodiment. 6 is a flowchart of downloading of the digital broadcast receiving apparatus according to the second embodiment. It is a flowchart of start a and start b. 10 is a flowchart of downloading of the digital broadcast receiving apparatus according to the third embodiment. 10 is a flowchart of downloading of the digital broadcast receiving apparatus according to the fourth embodiment. 10 is a flowchart of downloading of the digital broadcast receiving apparatus according to the fifth embodiment. 10 is a flowchart of downloading of the digital broadcast receiving apparatus according to the sixth embodiment.

Explanation of symbols

  1 Satellite broadcasting antenna, 2 Terrestrial broadcasting antenna, 3 Satellite broadcasting tuner, 4 Terrestrial broadcasting tuner, 5 Switcher, 6 DEMUX, 7 Decoder, 8 Microcomputer, 9 RAM, 10 Flash memory, 11 Data address Bus, 20 Boot program area, 21 Loading program area, 22 Main program area, 23 Version information area, 101 Satellite receiver, 102 Terrestrial receiver, 200 Processor

Claims (7)

In a broadcast receiving apparatus that stores a program in a memory,
A satellite receiver for receiving a first signal including the data of the satellite broadcast program and the update data of the program in the engineering slot from the satellite broadcast ;
From the terrestrial broadcast , a terrestrial receiver that receives the second signal that includes the data of the terrestrial broadcast program and includes the same update data as the update data in the engineering slot ;
A selector for selecting one of the signal between the first signal and the second signal received by the terrestrial receiving unit received by the satellite receiving unit,
A broadcast receiving apparatus, comprising: a processing unit that extracts update data of the program from an engineering slot of a signal selected by the selection unit, and updates the program using the extracted update data . The memory has two storage areas for the program,
The processing unit stores and extracts the program in both the two storage areas before updating the program using the update data extracted from the engineering slot of the signal selected by the selection unit. 2. The broadcast receiving apparatus according to claim 1, wherein only the program stored in one of the two storage areas is updated using update data. The selection unit, when the processing unit is Tsu or such can extract the update data of the program from the engineering slot signal selected by the selection unit, and again select not selected signal,
The broadcast receiving apparatus according to claim 1, wherein the processing unit extracts update data of the program from an engineering slot of the signal newly selected by the selection unit. The satellite receiver measures the reception level of the received first signal,
The terrestrial receiver measures the reception level of the received second signal,
The processor compares the reception level of the first signal measured by the satellite receiver with the reception level of the second signal measured by the terrestrial receiver,
The broadcast receiving apparatus according to claim 1, wherein the selection unit selects a signal having a high reception level as a result of comparison by the processing unit.   The broadcast receiving apparatus according to claim 1, wherein the selection unit selects a signal preset by a user. The processing unit further manages the start time of reception of the first signal received by the satellite receiver and the second signal received by the terrestrial receiver,
The selection unit includes a first signal received by the satellite reception unit and a second signal received by the terrestrial reception unit based on a reception start time managed by the processing unit, 2. The broadcast receiving apparatus according to claim 1, wherein a signal whose reception start time is early is selected. The processing unit further manages an end time of reception of the first signal received by the satellite receiving unit and the second signal received by the terrestrial receiving unit,
The selection unit, based on the end time of reception managed by the processing unit, out of the first signal received by the satellite reception unit and the second signal received by the terrestrial reception unit, 2. The broadcast receiving apparatus according to claim 1, wherein a signal having an earlier reception end time is selected.

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