JP4505311B2 - Receiving machine - Google Patents

Description

  The present invention relates to a receiver having a download function using broadcast waves.

Downloads using broadcast waves are used to correct problems in the receiver's system software, but a model ID is set to identify the target receiver. This model ID is unique to the receiver. It was equal to the position of ID (see Patent Documents 1 and 2).
JP 2004-56233 A Japanese Patent Laid-Open No. 10-257451

  In a receiver equipped with a download function, when the download function is not performed for a certain model at a time, it can be implemented by using a model ID. However, downloads using broadcast waves have begun to use model ID values one after another as the number of receiver models increases, but naturally there is a limit to the value and there is a problem that it will eventually be used up. It was.

  In the present invention, a receiver having a download function is realized when it is desired not to download a receiver for the purpose of the manufacturer. Furthermore, the model ID can be reused for other receivers by preventing download.

  In order to solve the aforementioned problems, the present invention is as follows. That is, the first invention includes means for monitoring software update information carried on a broadcast wave, execution means for executing download of update software or data based on the software update information, and the execution means. A control means for controlling execution of download; storage means for storing date and time information for stopping the download function; and means for storing current time information. The control means monitors current time information and Is compared with the date and time when the download function stored in the storage means is stopped, and the execution means after the date and time when the function is stopped prohibits execution of download by the execution means.

  According to a second aspect of the present invention, there is provided means for monitoring software update information carried on a broadcast wave, execution means for executing download of update software or data based on the software update information, and the execution means. It comprises control means for controlling execution of download, storage means for storing date and time information for stopping the download function, and means for storing current time information. The storage means is obtained by executing the download by the execution means. Download function stop date and time information included in the updated data, the control means monitors the current time information, and compares the current time with the download function stop date and time stored in the storage means, It is a receiver that disables execution of download by the execution means after the date and time when the function is stopped.

  In the third invention, the storage means stores a receiver ID, and the control means compares the receiver ID included in the update data with the receiver ID stored in the storage means. If the two match, the receiver enables the execution by the execution means.

Further, the fourth aspect of the invention relates to means for monitoring software update information carried on a broadcast wave, execution means for downloading update software or data based on the software update information, and the execution means. A control unit that controls execution of the download; a storage unit that stores date and time information for stopping the download function; and a unit that stores current time information. The storage unit stores external information stored in an external storage medium. And the control means monitors the current time information, compares the current time with the download function stop date and time information included in the external information stored in the storage means, and after the date and time when the function stops This is a receiver that disables execution of download by the execution means.

  According to the present invention, when it is desired to prevent a receiver having a download function from being downloaded for the purpose of the manufacturer, the download function can be stopped. Furthermore, by stopping the download function in the future, the model ID of the stopped receiver can be used as the model ID of other receivers, and the model ID can be infinite by recycling without affecting the old model. It can be used.

The best mode for carrying out the present invention will be described.
Hereinafter, embodiments of the receiver of the present invention will be described with reference to FIGS.

  Example 1 will be described. FIG. 1 is a block diagram of the receiver of this embodiment. Of the high-frequency signal received by the antenna 1, a signal having a specific frequency is extracted by the tuner unit 2. Further, the tuner unit 2 includes a demodulation circuit, an error correction circuit, and the like, and demodulates the extracted modulation signal and outputs a TS (transport stream). A DEMUX (demultiplexer) 3 separates the TS input from the tuner 2 into a video stream, an audio stream, and the like, and supplies them to the AV decoder 4. The video data decoded by the AV decoder 4 is output to the video processing circuit 5, and the audio data is output to the audio processing circuit 6 and then output as a video signal and an audio signal, respectively.

  The control means 7 has an internal clock function, and instructs the tuner unit 2 to extract a time signal sound from the broadcast signal when necessary, and performs time adjustment of the internal clock through the time signal timing. Further, the control means 7 performs various processes related to downloading in addition to the control of the entire receiver. Note that it is also possible to provide an execution unit separate from the control unit 7 for various processes related to downloading, and the control unit 7 can control the execution unit.

  Hereinafter, the download process will be described. FIG. 2 is a flowchart for explaining an example of the operation of the receiver at the time of downloading. When the download data is transmitted, SDTT (Software Download Trigger Table) is transmitted on the broadcast wave. The receiver receives the SDTT (S201), determines from the manufacturer ID and model ID (receiver ID) stored in the SDTT whether the download data is for the own model, and further downloads the download data. It is determined from the version (version ID) whether it corresponds to the version of the target software (S202). If it is determined that the download is valid, a display for notifying the user that the software update is performed is performed (S203). The SDTT also includes sending schedule information, and using this information, an activation reservation process for download reception is performed (S204). When the sending date / time is reached, an activation process for receiving download data is performed (S205), download data is acquired (S206), and update data is stored in the storage means 8. After the download is completed, it is determined whether or not the downloaded data is normal (S207). If the downloaded data is normal, a data update process is performed (S208). Note that the processing ends when the information does not apply or is not normal in steps S202 and S207.

  FIG. 3 shows an example of the clock function inside the control means 7 and the download function stop date / time storage part inside the storage means 8. The storage unit 8 stores, for example, information on January 01, 2050 00:00:00 as the date and time when the satellite download function is stopped in advance. As the download stop date and time, when the analog broadcast end date is known in a receiver compatible with analog TV broadcast, the date and time after the scheduled end date may be set. Alternatively, a date and time at which it is considered that there is no possibility of downloading the target model, such as after several decades, may be set. The control means 7 monitors the current time information, compares the current time with the date and time when the download function stored in the storage means is stopped, and does not perform any download after the download function stop date and time. Like that. That is, after the download function is stopped, SDTT is received, and even if the model ID is the own model, the activation reservation process for receiving the download is not performed and the download is not executed.

  FIG. 4 is a flowchart showing an example in which the above-described processing is executed by software. The control means 7 acquires and compares the information held by the internal clock function and the download stop date / time information inside the storage means (S401), and determines whether the time until the download is stopped is within a predetermined time ( S402). Here, as an example, whether or not to stop the download function within 24 hours is used as a criterion. If the time to stop the download function is not less than 24 hours, check again after a certain period of time. When the time until the download function is stopped is within 24 hours, the time until the download function stop time is obtained and the countdown is started (S403). When the count reaches 0 (S404), a download prohibition flag is set and turned ON to prevent subsequent downloads (S405). As an action of the download prohibition flag, for example, it is conceivable to check the download prohibition flag after receiving the SDTT and not to prepare for download when the flag is ON.

  A second embodiment will be described. In the receiver of the first embodiment, when the download function is stopped, the download function cannot be performed at all. However, in the receiver of the second embodiment, this is postponed before the download function is stopped. By downloading this software, you can postpone the stop date and time of the download function. This embodiment is the same as the first embodiment, and a description thereof using a functional block diagram is omitted.

  FIG. 5 is an example of a flowchart in the second embodiment. For example, it is assumed that the date and time information is initially stored in the storage unit 8 in order to stop the download function at 00:00 on January 1, 2050. However, if there is a possibility that the target model will be downloaded after 2050, before the download function is stopped, the download data storing the date / time information of the postponement is prepared. The receiver performs downloading (S501), and stores the download data in the storage unit 8 (S502). Furthermore, the date and time information for executing the download stop is updated by updating the date and time information of 0:00 on January 1, 2050 stored in advance in the storage means 8 to the date and time information included in the download data (S503). Can be postponed. FIG. 6 illustrates the above process.

  The method for postponing the download function stop date and time has been described above. However, this is not postponed, and it is possible to change the program so that the download function is not stopped, that is, the download function is permanently provided. is there. Also in this case, before the download function is stopped, the download data for preventing the download stop function from working is prepared. The receiver receives this download data, erases the date and time information of 0:00 on January 1, 2050 stored in the storage means 8, and does not stop the download function. In this way, even after the internal clock of the control means 7 becomes after 0:00 on January 1, 2050, the download function can be permanently provided.

  The method for storing the stop date / time information in advance at the time of manufacture has been described so as to stop the download function in the future. However, the download function may be stopped by downloading instead of at the time of manufacture. That is, software for stopping the download function is prepared, and this software is downloaded. When the receiver downloads this software, it can no longer be downloaded, so that the model ID of the receiver can be reused for other receivers.

  In addition, a certain period may be provided after the software for stopping the download function is downloaded until the software is actually stopped. Hereinafter, this process will be described.

  In this case, date and time information for stopping the download function is stored in the software to be downloaded, and the download is executed by the control means 7 to update the software. At this time, the storage means 8 stores the download stop date / time information included in the download data. The control means 7 compares the date / time information of the internal clock with the download stop date / time information, and does not perform any download after the download stop date / time.

  By stopping the download function in this way, the model ID of the receiver can be reused for another receiver.

  Although the present invention has been described in the above embodiment, as a method for postponing or canceling the stop date and time of the download function, it is realized by downloading data for postponing or canceling the download function before stopping the download function. Although the method has been described, it is possible to cope with an external storage medium such as a commercially available memory card instead of downloading.

  For example, software for stopping the download function using broadcast waves or software for postponing the download function is created and written to the memory card. By using this to update the software of the receiver, the download function can be stopped and the model ID of the receiver can be adopted for another model.

  In this case, the download function can be restored even after the download function stop date has passed and the download function has already stopped.

2 is a functional block diagram of a receiver according to Embodiment 1. FIG. 6 is a flowchart at the time of download processing in the receiver of Embodiment 1. FIG. FIG. 3 is an explanatory diagram illustrating the inside of a control unit of the receiver according to the first embodiment. FIG. 6 is a flowchart at the time of download function control in the receiver of the first embodiment. FIG. 10 is a flowchart at the time of a download process in the receiver according to the second embodiment. FIG. 6 is an explanatory diagram showing the inside of the control means of the receiver according to the second embodiment.

Explanation of symbols

1 Antenna 2 Tuner 3 DEMUX
4 AV decoder 5 Video processing circuit 6 Audio processing circuit 7 Control means 8 Storage means 9 OSD

Claims (4)

  Means for monitoring software update information carried on a broadcast wave, execution means for executing download of update software or data based on the software update information, and control means for controlling execution of download by the execution means Storage means for storing date and time information for stopping the download function and means for storing current time information, and the control means monitors the current time information, and stores the current time in the storage means. A receiver that compares the stored date and time when the download function is stopped and disables execution by the execution means after the date and time when the function is stopped.   Means for monitoring software update information carried on a broadcast wave, execution means for executing download of update software or data based on the software update information, and control means for controlling execution of download by the execution means And storage means for storing date and time information for stopping the download function, and means for storing current time information, wherein the storage means includes download data included in the update data obtained by executing the download. The function stop date / time information is stored, and the control means monitors the current time information, compares the current time with the download function stop date / time stored in the storage means, and executes the execution after the date / time when the function stops. A receiver characterized in that execution of downloading by means is disabled.   The storage means stores a receiver ID, and the control means compares the receiver ID included in the update data with the receiver ID stored in the storage means and executes the execution. 3. The receiver according to claim 2, wherein execution of downloading by means is allowed.   Means for monitoring software update information carried on a broadcast wave, execution means for executing download of update software or data based on the software update information, and control means for controlling execution of download by the execution means And storage means for storing date and time information for stopping the download function and means for storing current time information, wherein the storage means stores external information stored in an external storage medium, and the control means Monitoring the current time information, comparing the current time with the download function stop date / time information included in the external information stored in the storage means, and executing the download by the execution means after the function stop date and time A receiver characterized by disabling.

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