JP2005142751A - Signal receiving apparatus and method thereof, program recording medium and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable increasing a success rate of updating software. <P>SOLUTION: A BS digital broadcasting apparatus 62-1 and a terrestrial digital broadcasting apparatus 62-2 multiplex files of update software data generated by being divided into one or more files by a file generating apparatus 61 on broadcasting signals of respective apparatuses and broadcast the data. If all the files of update software data cannot be acquired from the broadcasting signals, a receiving apparatus 63 acquires the files from the database 72 of a server 64 via a network 73, or acquires the files from a distributed and mounted recording medium 71, and establishes the update software data from the acquired files, thereby updating its own software. This apparatus is applicable to a data transmission system for transmitting data for updating the software of a receiving apparatus for receiving digital broadcasting signals. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a signal receiving apparatus and method, a program recording medium, and a program, and more particularly to a signal receiving apparatus and method, a program recording medium, and a program that can increase the success rate of software update.

  As shown in Non-Patent Document 1, in digital television broadcasting, a mechanism for transmitting / receiving software data for updating software of a receiver using radio waves transmitted from a broadcasting station is used. In this operation, the receiver is notified in advance that software data will be downloaded, and the software data is acquired by receiving a transport stream of a specific frequency at the notified time. The receiver software is updated.

  With reference to FIG. 1, the flow of software data of a receiver in digital television broadcasting (hereinafter also referred to as digital broadcasting) will be described. In the example of FIG. 1, description will be made using terrestrial digital broadcasting.

  A receiver manufacturer (manufacturer) 1-1 who manufactures the A type receiver 11-1 and the B type receiver 12-1 receives software data (for example, A type reception) Software data DA1 of the machine 11-1 and software data DB1) of the B type receiver 12-1 are generated and submitted to the download provider 3 as download data DA2 and DB2 in a format format corresponding to broadcasting. The receiver manufacturer 1-2 who manufactures the C-type receiver 13-1 and the D-type receiver 14-1 receives software data (for example, a C-type receiver) for terrestrial digital broadcasting of the model to be updated. 13-1 software data DC1) is generated and submitted to the download provider 3 as download data DC2. That is, in the case of the example of FIG. 1, the corresponding models of the receivers 11-1 to 13-1 are to be updated. In the example of FIG. 1, the software data of the D-type receiver 14-1 is software data DD <b> 1 although it is not an update target.

  The download provider 3 collects the download data DA2, DB2, and DC2 submitted by the receiver producers 1-1 and 1-2, schedules them, and transmits the data via the broadcast station 4 in the DSM-CC data carousel system. The carousel 22 is multiplexed and broadcast on the broadcast signal. Download data DA2 to DC2 submitted by receiver manufacturers 1-1 and 1-2 are treated as modules DA3 to DC3 of the data carousel 22. These modules may be software modules as they are, or may be a plurality of modules divided by functional units or fixed sizes. Further, before transmitting the data carousel 22, the download provider 3 generates notification information 21 generated and submitted by the receiver manufacturers 1-1 and 1-2 for each model based on each download data. 4, the broadcast signal is multiplexed and broadcast. In this notification information 21, information such as the download time of software data and the service (channel) for downloading is described as information for notifying the receiver that software data will be downloaded in advance. .

  Market 5 includes various types of digital such as A type receivers 11-2 to 11-4, B type receiver 12-2, C type receiver 13-2, and D type receiver 14-2. Broadcast receivers (hereinafter referred to as receivers 11-1 to 11-4, receivers 12-1 and 12-2, receivers 13-1 and 13-2, and receivers 14-1 and 14-2) , Simply referred to as receivers 11, 12, 13, and 14) if they do not need to be individually distinguished. The receivers 11 to 14 existing in the market 5 receive the broadcast signal from the broadcast station 4 and acquire the notification information 21. Among these receivers, the receivers 11 to 13 to be updated receive the service described in the notification information 21 at the time described in the notification information 21 corresponding to each model. Then, the receivers 11 to 13 acquire the data carousel 22 included in the received broadcast signal of the service, and acquire the module (DA3 to DC3) required by the receiver 11 from the data carousel 22. Then, it is stored in a non-volatile area of a built-in memory as software data for terrestrial digital broadcasting (any one of DA1 to DC1). Thereby, the software of the receivers 11 to 13 is updated.

Digital Broadcasting Receiver Standard ARIB STD-B21, 4.0 Edition, Download Function, Japan Radio Industry Association, H15.2.6, P. 120 and P.I. 178

  As described above, the software data for the receiver to be updated is multiplexed with the broadcast signal and provided to the receiver. However, since the software data for the receiver to be updated has been generated individually, for example, for BS digital broadcasting and terrestrial digital broadcasting, it is necessary to use a combination of modules acquired on different transmission paths. There was a problem that could not be done. Therefore, even in a receiver for both BS digital broadcasting and terrestrial digital broadcasting, based on the notification information acquired on one of the transmission paths, all modules are acquired only on that transmission path, and the software is updated. I had to do it.

  In the download in digital broadcasting, there is a time limit in the period for sending software data. For example, in the case of software data that divides a module into a plurality of modules, when the transmission deadline expires, all the modules acquired until then are wasted, waiting for the next transmission period, and acquiring the module from the beginning There was a problem that had to be redone and the probability of software update failure was high. On the other hand, in the case of software data that does not divide a module, the time required to acquire the module becomes long, so that there is a problem that the possibility that the transmission is not completed due to disturbance such as AC interruption is increased.

  The present invention has been made in view of such a situation, and makes it possible to increase the success rate of software update.

  The signal receiving device of the present invention is based on notification information acquisition means for acquiring notification information related to downloading of its own software update file from the received broadcast signal, and broadcast information based on the notification information acquired by the notification information acquisition means. From the first file acquisition means for acquiring the software update file divided into one or more, the determination means for determining whether or not all the software update files have been acquired by the first file acquisition means, and the determination means When it is determined that all the software update files have not been acquired, the second file acquisition unit, the first file acquisition unit, and the second file acquisition unit acquire the software update file from a predetermined recording medium. Combined software update files Characterized in that it comprises a software updating means that updates the.

  The predetermined recording medium can be configured by a recording medium included in an information providing apparatus connected via a network.

  The predetermined recording medium can be constituted by a removable recording medium or the like.

  The new / old judgment means for judging whether or not the software update file acquired by the second file acquisition means is a newer version than the software update file acquired by the first file acquisition means; When it is determined that the software update file acquired by the second file acquisition unit is a newer version than the software update file acquired by the first file acquisition unit, the software update acquired by the first file acquisition unit A discarding unit for discarding the file can be further provided.

  The signal reception method of the present invention is based on the notification information acquired from the received broadcast signal, the notification information acquisition step for acquiring the notification information related to the download of its own software update file, and the notification information acquired by the processing of the notification information acquisition step, A first file acquisition step of acquiring a software update file divided into one or more from a broadcast signal, and a determination step of determining whether or not all of the software update files have been acquired by the processing of the first file acquisition step; When it is determined that all the software update files have not been acquired by the process of the determination step, a second file acquisition step of acquiring the software update file from a predetermined recording medium, a process of the first file acquisition step, and By the processing of the second file acquisition step By combining the obtained software update file, characterized in that it comprises a software updating step of updating its own software.

  The program recorded on the program recording medium of the present invention is acquired from the received broadcast signal by the processing of the notification information acquisition step of acquiring own software update file download information and the notification information acquisition step. Based on the notification information, a first file acquisition step of acquiring a software update file divided into one or more from a broadcast signal, and whether or not all software update files have been acquired by the processing of the first file acquisition step A determination step for determining the software update file, a second file acquisition step for acquiring the software update file from a predetermined recording medium when it is determined by the processing of the determination step that all the software update files have not been acquired, File acquisition step processing and second By combining the acquired software update file by the process of Airu acquisition step, characterized in that it comprises a software updating step of updating its own software.

  The program of the present invention includes a notification information acquisition step for acquiring notification information related to downloading of its own software update file from the received broadcast signal, and a notification acquired by the processing of the notification information acquisition step. Based on the information, a first file acquisition step of acquiring a software update file divided into one or more from the broadcast signal, and whether or not all the software update files have been acquired by the processing of the first file acquisition step A determination step of determining, a second file acquisition step of acquiring a software update file from a predetermined recording medium when it is determined that all of the software update files have not been acquired by the processing of the determination step, and a first file Acquisition step processing and second file retrieval By combining the acquired software update file by the processing in step, characterized in that it comprises a software updating step of updating its own software.

  In the present invention, notification information relating to downloading of the own software update file is acquired from the received broadcast signal, and the software update file divided into one or more from the broadcast signal is acquired based on the acquired notification information. It is determined whether or not all the software update files have been acquired. If it is determined that all the software update files have not been acquired, the software update file is acquired from a predetermined recording medium, and the acquired software update file is combined to update its own software.

  According to the present invention, the success rate of software update can be increased. Furthermore, according to the present invention, it is possible to reduce the labor and cost for software update as much as possible.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode of the present invention will be described below. The correspondence relationship between the disclosed invention and the embodiments is exemplified as follows. Although there are embodiments which are described in this specification but are not described here as corresponding to the invention, the embodiments correspond to the invention. It does not mean that it is not a thing. Conversely, even if an embodiment is described herein as corresponding to an invention, that means that the embodiment does not correspond to an invention other than the invention. Absent.

  Further, this description does not mean all the inventions described in the specification. In other words, this description is for the invention described in the specification and not claimed in this application, i.e., for the invention that will be applied for in the future or that will appear as a result of amendment and added. It does not deny existence.

  According to the present invention, a signal receiving device (for example, the receiving device 63 in FIG. 2) that receives a broadcast signal is provided. This signal receiving apparatus is a notification information acquisition means (for example, a notification information acquisition unit of FIG. 6) that acquires notification information (for example, download notification information of FIG. 10) regarding downloading of its own software update file from the received broadcast signal. 251) and first file acquisition means for acquiring a software update file (for example, file 81 in FIG. 2) divided into one or more from the broadcast signal based on the notification information acquired by the notification information acquisition means. (For example, the file acquisition unit 254 in FIG. 6), a determination unit (for example, the download control unit 252 in FIG. 6) for determining whether or not all the software update files have been acquired by the first file acquisition unit, and a determination unit If it is determined that all the software update files have not been acquired by the For example, the second file acquisition unit (for example, the file communication unit 255 of FIG. 6) for acquiring the software update file (for example, the file 82 of FIG. 2) from the database 72 of the server 64 of FIG. Software update means (for example, software construction unit 256 in FIG. 6) that updates its own software by combining the software update files acquired by the file acquisition means and the second file acquisition means is provided.

  In this signal receiving apparatus, the predetermined recording medium is a recording medium (for example, FIG. 2) included in an information providing apparatus (for example, the server 64 in FIG. 2) connected via a network (for example, the network 73 in FIG. 2). It can be configured by a database 72).

  In this signal receiving apparatus, the predetermined recording medium can be constituted by a detachable recording medium (for example, the recording medium 71 in FIG. 2) or the like.

  This signal receiving apparatus determines whether or not the software update file acquired by the second file acquisition unit is a newer version than the software update file acquired by the first file acquisition unit (for example, The software update file acquired by the second file acquisition unit is acquired by the first file acquisition unit by the download control unit 252 of FIG. 6 that executes the process of step S50 of FIG. When it is determined that the version is newer than the software update file, the discard unit that discards the software update file acquired by the first file acquisition unit (for example, the download in FIG. 6 that executes the process of step S51 in FIG. 12) A control unit 252). Can.

  According to the present invention, a signal receiving method of a signal receiving device (for example, the receiving device 63 in FIG. 2) that receives a broadcast signal is provided. This signal reception method includes a notification information acquisition step (for example, step S42 in FIG. 11) for acquiring notification information (for example, download notification information in FIG. 10) related to downloading of the own software update file from the received broadcast signal. Based on the notification information acquired by the processing of the notification information acquisition step, a first file acquisition step (for example, a file update file 81 shown in FIG. 2) that is divided into one or more from the broadcast signal ( For example, step S46 in FIG. 11, a determination step for determining whether or not all the software update files have been acquired by the process in the first file acquisition step (for example, step S47 in FIG. 12), and a process in the determination step It is determined that not all software update files have been acquired. In this case, the second file acquisition step (for example, step S49 in FIG. 12) for acquiring the software update file (for example, the file 82 in FIG. 2) from the predetermined recording medium, the process of the first file acquisition step and the first And a software update step (for example, steps S53 and S54 in FIG. 12) for updating its own software by combining the software update files acquired by the processing of the second file acquisition step.

  Note that the program recording medium and program of the present invention have basically the same configuration as the signal receiving method of the present invention described above, and therefore will not be described because they are repeated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 2 shows a configuration example of a data transmission system 51 to which the present invention is applied. In the example of FIG. 2, the file generation device 61 is installed in a manufacturer that manufactures a reception device 63 that receives a broadcast signal, and updated software data for updating software (for example, version X1) of the reception device 63. (For example, data for software version X2) is generated, and the generated update software data file is transmitted to the BS digital broadcasting device 62-1, the terrestrial digital broadcasting device 62-2, or the server 63. The recording medium 71 is provided or recorded on the recording medium 71 to be mounted, and the recording medium 71 on which the file of the updated software data is recorded is provided to the user of the receiving device 63.

  Specifically, the file generation device 61 divides the updated software data into one or more files, and identifies the divided files so as not to depend on a transmission path (distribution path) for transmitting the updated software data. Each file is converted into a file that describes information and the relationship between files. Further, the file generation device 61 generates download notification information, which is information for notifying that the converted update software data is to be downloaded based on the update software data download scheduling. Then, the file generation device 61 converts the converted file into a file (for example, the files 81 to 83) having a format corresponding to the device to be distributed, and the BS digital broadcast device 62 via a server of a downloader (not shown). -1 and the terrestrial digital broadcasting device 62-2, transmitted (provided) to the server 63, or recorded on the recording medium 71 and distributed to the user of the receiving device 63 or the like. At this time, the file generation device 61 also transmits the generated download notification information to the BS digital broadcasting device 62-1 and the terrestrial digital broadcasting device 62-2 together with a file that is formatted according to the device to be distributed. To do.

  The BS digital broadcasting device 62-1 and the terrestrial digital broadcasting device 62-2 (hereinafter referred to simply as the digital broadcasting device 62 when they do not need to be individually distinguished) transmit the update software data file 81. Prior to this, a broadcast signal in which the download notification information received from the file generation device 61 via the downloader's server is multiplexed is broadcast. Also, the digital broadcast device 62 broadcasts a broadcast signal in which the update software data file 81 received from the file generation device 61 via the downloader's server is multiplexed based on the update software data download scheduling.

  The receiving device 63 receives the broadcast signal broadcast from the digital broadcast device 62, acquires the download notification information included in the broadcast signal, and broadcasts the broadcast signal broadcast from the digital broadcast device 62 at the time described in the download notification information. And an update software data file 81 included in the broadcast signal is acquired. When all the update software data files 81 cannot be acquired from the broadcast signal of the digital broadcasting device 62 by one-way communication, the receiving device 63 is updated from the server 64 connected via the network 73 by two-way communication. A software data file 82 is acquired.

  Note that a recording medium 71 is detachably attached to the receiving device 63. For example, the recording medium 71 distributed from the manufacturer is configured by an optical disk, a memory card, or the like, and a file 83 of updated software data is recorded by the file generation device 61. Accordingly, when all the update software data files 81 cannot be obtained from the broadcast signal of the digital broadcast device 62, the reception device 63 attaches the recording medium 71 and receives the update software data file 83 from the attached recording medium 71. You may make it acquire.

  Based on the identification information described in the update software data file acquired as described above and the relationship between the files, the reception device 63 receives the BS digital broadcast device 62-1 and the terrestrial digital broadcast device 62-. 2. The update software data is constructed from all the files of the update software data acquired from at least one of the server 64 or the recording medium 71, and the version of the own software is created using the constructed update software data. Update to X2.

  The server 64 has a database 72 and stores a file 82 of updated software data from the file generation device 61. When there is an access from a receiving device 63 connected to a network 73 represented by the Internet, the server 64 receives a file of updated software data stored in the database 72 in the receiving device 63 via the network 73. 82 is transmitted.

  As described above, the reception device 63 stores the update software data file generated by the file generation device 61 on the BS digital broadcast device 62-1, the terrestrial digital broadcast device 62-2, the server 64, or the recording medium 71. Since it can be obtained from any of them, it is possible to reliably update its own software.

  In the example of FIG. 2, only one receiving device 63 and one server 64 are connected to the network 73, but an arbitrary number of each is connected to the network 73.

  FIG. 3 illustrates a configuration example of the file generation device 61. In the example of FIG. 3, a CPU (Central Processing Unit) 111 performs various processes according to a program stored in a ROM (Read Only Memory) 112 or a program loaded from a storage unit 118 to a RAM (Random Access Memory) 113. Execute. The RAM 113 also appropriately stores data necessary for the CPU 111 to execute various processes.

  The CPU 111, ROM 112, and RAM 113 are connected to each other via a bus 114. An input / output interface 115 is also connected to the bus 114.

  The input / output interface 115 includes an input unit 116 including a keyboard and a mouse, a display including a CRT (Cathode Ray Tube) and an LCD (Liquid Crystal Display), an output unit 117 including a speaker, and a hard disk. A communication unit 119 including a storage unit 118, a modem, a terminal adapter, and the like is connected. The communication unit 119 performs communication processing via the network 73, for example.

  A drive 120 is connected to the input / output interface 115 as necessary, and a recording medium 71 made of a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is appropriately mounted, and predetermined data is written to the recording medium 71. In other words, the computer program read from the recording medium 71 is installed in the ROM 112 or the storage unit 118 as necessary.

  Although illustration is omitted, the BS digital broadcasting device 62-1, the terrestrial digital broadcasting device 62-2, or the server 64 has basically the same configuration as the file generation device 61 shown in FIG. Therefore, in the following description, the configuration of the file generation device 61 in FIG. 3 is also referred to as the configuration of the BS digital broadcasting device 62-1, the terrestrial digital broadcasting device 62-2, or the server 64 as necessary. The

  FIG. 4 shows a functional configuration example of the file generation device 61. The functional blocks shown in FIG. 4 are realized by executing a predetermined control program by the CPU 111 in FIG.

  The file dividing unit 151 divides update software data (for example, data for setting software to version X2) for updating software (for example, version X1) of the receiving device 63 into one or more files.

  The file conversion unit 152 is a predetermined description in which identification information and relevance between files are described so that the file divided by the file dividing unit 151 does not depend on a transmission path (distribution path) for transmitting the updated software data. Is converted into a file of the format, and the converted file of the predetermined format is converted into a file of a format corresponding to each transfer path to generate a file. The file conversion unit 152 downloads the converted update software data for the BS digital broadcast device 62-1 and the terrestrial digital broadcast device 62-2 based on the update software data download scheduling. Download notification information, which is information for notifying the reception device 63 of the download, is also generated.

  The file transfer unit 153 controls the communication unit 119 to transfer the file or download notification information generated by the file conversion unit 152 to a predetermined device, or controls the drive 120 to load the recording medium 71 loaded. Or let it be recorded.

  FIG. 5 shows a configuration example of the receiving device 63. The receiving device 63 receives and selects a broadcast signal from the BS digital broadcasting device 62-1 or the terrestrial digital broadcasting device 62-2 via the antenna 201, outputs the video from the display 202, and outputs the sound. Is output from the speaker 203.

  In the example of FIG. 5, a ROM (Read Only Memory) 212, a RAM (Random Access Memory) 213, an operation input unit 214, and a nonvolatile memory 215 are connected to a CPU (Central Processing Unit) 211. The CPU 211 controls each part of the receiving device 63 according to a program stored in the ROM 212, a program loaded in the RAM 213, or a user instruction signal obtained via the operation input unit 214, and executes various processes. To do. The RAM 213 appropriately stores data necessary for the CPU 211 to execute various processes. The operation input unit 214 includes an input button and a dial, and outputs a user instruction signal to the CPU 211. The nonvolatile memory 215 stores download notification information received by the receiving device 63, a file of updated software data, and the like.

  The CPU 211 is connected to a network interface (I / F) 217, a drive 218, a front end unit 219, a descrambler 220, a demultiplexer 221, an MPEG (Moving Picture Experts Group) decoder 222, and a video signal processing unit 223 via a bus 216. And an audio signal processing unit 224 are connected, and execute predetermined processing in accordance with the control of the CPU 211.

  The network interface 217 includes a modem, an IEEE802.3 interface, and the like, establishes a data link with the server 64 connected to the network 73, and, if necessary, FTP (File Transfer Protocol) or HTTP (Hyper Text Transport Protocol). ) Or the like, and communicates predetermined data such as updated software data. A recording medium 71 made of a recording medium such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is appropriately attached to the drive 218. The drive 218 is used when reading data from or writing data to the recording medium 71. A computer program such as updated software data read from the recording medium 71 is stored in the ROM 212 or the nonvolatile memory 215 and installed as necessary.

  The front end unit 219 extracts a broadcast signal corresponding to the user's channel selection from the broadcast signal received via the antenna 201, demodulates it, generates a transport stream, and outputs it to the descrambler 220. The descrambler 220 appropriately de-scrambles the transport stream input from the front end unit 219 and outputs the descrambler 220 to the demultiplexer 221. The demultiplexer 221 separates the multiplexed transport stream into a stream such as video or audio data or section data. The demultiplexer 221 outputs video data and audio data to the MPEG decoder 222 and outputs only necessary section data to the CPU 211. The MPEG decoder 222 decodes the video data from the demultiplexer 221 and outputs it to the video signal processing unit 223, and also decodes the audio data from the demultiplexer 221 and outputs it to the audio signal processing unit 224.

  The CPU 211 develops each piece of information of the section data from the demultiplexer 221 in the RAM 213. Section data includes DSM-CC sections (update software data files, etc.) used for data broadcasting and data download, download notification information (SDTT (Software Download Trigger Table)), EPG (Electronic Program Guide) information, etc. It is included.

  The video signal processing unit 223 adds (superimposes) data broadcast data or the like to the video data from the demultiplexer 221, converts the data into an NTSC format signal, and displays the video on the display 202. The audio signal processing unit 224 causes the audio data from the demultiplexer 221 to be output from the speaker 203.

  FIG. 6 shows a functional configuration example of the receiving device 63. The functional blocks shown in FIG. 6 are realized by executing a predetermined control program by the CPU 211 of FIG.

  The notification information acquisition unit 251 acquires download notification information from the section data input from the demultiplexer 221, and if the acquired download notification information is download notification information necessary for the receiving device 63, downloads the download notification information. This is supplied to the control unit 252.

  The download control unit 252 determines the download start time of the update software data file based on the download notification information from the notification information acquisition unit 251. The download control unit 252 also selects each of the channel selection unit 253, the file acquisition unit 254, the file communication unit 255, and the software construction unit 256 based on the download notification information or the update software data file stored in the nonvolatile memory 215. Control processing.

  The channel selection unit 253 selects a service (channel) described in the download notification information at the download start time determined by the download control unit 252. The file acquisition unit 254 controls the demultiplexer 221 to acquire an update software data file from the broadcast signal of the service selected by the channel selection unit 253, and temporarily stores the acquired update software data file in the nonvolatile memory 215. Remember.

  If the next download time of the updated software data has not been determined (that is, if all download start times have ended and there is no next download timing), the file communication unit 255 receives the server via the network 73. The update software data file is acquired from the server 64, and the acquired update software data file is temporarily stored in the nonvolatile memory 215. The software constructing unit 256 constructs update software data from the update software data file stored in the nonvolatile memory 215, and updates the software of the receiving device 63 using the constructed update software data.

  Next, the update software data file generation processing of the file generation device 61 will be described with reference to the flowchart of FIG.

  In step S11, the file dividing unit 151 prepares (generates) update software data (for example, data for setting the software to version X2) for updating the software (for example, version X1) of the receiving device 63. As shown in FIG. 8, the update software data is divided into one or more files.

  FIG. 8 shows a configuration example of software data. In the example of FIG. 8, the update software data for updating the software of the receiver 63 to version X2 is divided into n files of file 1, file 2, file 3, file 4,. It is configured.

  That is, in step S11 of FIG. 7, the file dividing unit 151 divides the update software data into n files of files 1 to n as shown in FIG. 8, and the divided update software data files are divided. Then, the file is supplied to the file conversion unit 152, and the process proceeds to step S12.

  As shown in FIG. 9, the file conversion unit 152 does not depend on the transmission path (distribution path) for transmitting the updated software data for the file divided by the file division unit 151 in step S12, as shown in FIG. And a file of a predetermined format in which the relationship between the files is described, and the converted file of the predetermined format is converted into a file of a format corresponding to each transfer path. At this time, the file conversion unit 152 downloads the converted update software data for the BS digital broadcast device 62-1 and the terrestrial digital broadcast device 62-2 based on the update software data download scheduling. Download notification information (described later with reference to FIG. 10) is also generated.

  In this way, the update software data file (files 81 to 83 in the case of FIG. 1) and the download notification information for the BS digital broadcasting device 62-1 and the terrestrial digital broadcasting device 62-2 are generated. This completes the file generation process.

  The updated software data file generated as described above is transmitted to the server 64 via the communication unit 119 under the control of the file transfer unit 153, or the download unit (not shown). The information is transmitted to the BS digital broadcasting device 62-1 and the terrestrial digital broadcasting device 62-2 together with the download notification information or recorded on the recording medium 71 attached to the drive 120 via the server of the receiving device 63. Is distributed to the user of the receiving device 62 by a manufacturer or the like.

  FIG. 9 shows a configuration example of a file 81 of updated software data generated by the file generating device 61 and transmitted from the BS digital broadcasting device 62-1 or the terrestrial digital broadcasting device 62-2. In the example of FIG. 9, the updated software data file has a size of, for example, 4 KB, and includes a header part and a payload.

  The header portion includes an identifier indicating that the file is an updated software data file, a file length indicating the size of the file, and a version of the updated software data corresponding to the file (version X2 in the example of FIG. 8). The software version indicated, the model ID (Identify) for identifying the receiving device 63 that is the target of the updated software data corresponding to the file, and the total number of files indicating how many files the updated software data corresponding to the file is composed of (In the example of FIG. 8, n), and various identification information such as a file number indicating the number of the file in the total number of files and relevance information with other files. The

  In the payload after the header portion, one file (for example, file 3 in FIG. 8) of the divided update software data is arranged.

  In the example of FIG. 9, the configuration example of the update software data file 81 transmitted from the BS digital broadcasting device 62-1 or the terrestrial digital broadcasting device 62-2 has been described. The configuration of the obtained updated software data file 82 or 83 is basically the same as that of the file format only, but the description thereof will be omitted. In the example of FIG. 9, various types of identification information and relevance information with other files are described in the header part. However, these pieces of information are not limited to the header part. Any format that can acquire information from a single file, such as a column, may be used.

  As described above, the update software data is divided into one or more files, and various identification information and relevance information with other files are described in each file. You can determine whether you have all the data files by simply looking at the files. In addition, since various identification information and relevance information with other files are described in each file, the BS digital broadcasting device 62-1, the terrestrial digital broadcasting device 62-2, the server 64, and the recording medium 71 are recorded. Even if a file is acquired from any of these devices (recording media), the receiving device 63 generates one piece of updated software data from these files as described later with reference to FIGS. Can update the software.

  FIG. 10 shows a configuration example of download notification information generated by the file generation device 61 and transmitted from the BS digital broadcasting device 62-1 or the terrestrial digital broadcasting device 62-2.

  In the example of FIG. 10, the download notification information includes, from the top, an SDTT (Software Download Trigger Table) header, ..., manufacturer ID, model ID, ..., download service ID, ..., download version, ..., schedule, ..., module Consists of management information, etc.

  The SDTT (Software Download Trigger Table) header is information indicating that the data is download notification information. The manufacturer ID is information for specifying a manufacturer such as the receiving device 63 from which updated software data is to be acquired. The model ID is information for specifying the type of the receiving device 63 from which the updated software data is to be acquired. The download service ID is information indicating a service (channel) through which a file of updated software data is broadcast. The download version is information indicating the version of the updated software data corresponding to the download notification information.

  The schedule is information indicating the date and time (year / month / day, time) when the update software data file is broadcast. Since the broadcast of the updated software data file is executed a plurality of times, the schedule shows the date and time when the updated software data file is broadcast for a certain period after the date when the notification information is sent. The module management information is information such as the total number of files of updated software data, the identifier (order) of each file, and size information.

  By viewing the manufacturer ID, model ID, download version and module management information of the download notification information configured as described above and the update software data file stored in the nonvolatile memory 215, the receiving device 63 It is determined whether or not this download notification information is necessary, that is, whether or not a file of updated software data corresponding to this download notification information is necessary.

  Next, software update processing of the receiving device 63 will be described with reference to the flowcharts of FIGS. 11 and 12.

  As described with reference to FIG. 7, when updating the software of the reception device 63, the file generation device 61 generates the update software data file of FIG. 9 and updates the software data for the digital broadcasting device 62. Download notification information, which is information for notifying that download of the converted updated software data will be performed, is generated based on the download scheduling, and is transmitted to the digital broadcasting device 62 via a server of a downloader (not shown). Send (provide). Prior to the transmission of the update software data file, the digital broadcast device 62 broadcasts a broadcast signal in which the download notification information from the file generation device 61 is multiplexed.

  The front end unit 219 of the receiving device 63 extracts a broadcast signal corresponding to the user's channel selection from the broadcast signal received via the antenna 201, demodulates it, generates a transport stream, and sends it to the descrambler 220. Output. The descrambler 220 appropriately de-scrambles the transport stream input from the front end unit 219 and outputs the descrambler 220 to the demultiplexer 221. The demultiplexer 221 separates the multiplexed transport stream into a stream such as video or audio data or section data.

  In response to this, the notification information acquisition unit 251 acquires the download notification information described above with reference to FIG. 10 from the demultiplexer 221 in step S41, proceeds to step S42, and the manufacturer of the acquired download notification information The ID, model ID, download version, and the like are confirmed, and it is determined whether or not the acquired download notification information is download notification information necessary for the receiving device 63, and is not the download notification information necessary for the receiving device 63. If it is determined, the process returns to step S41, and the subsequent processing is repeated.

  In step S42, the notification information acquisition unit 251 determines that the acquired download notification information is download notification information necessary for the receiving device 63, that is, the acquired download notification information is for the receiving device 63. It is information corresponding to a file of updated software data, information corresponding to a file not yet held in the nonvolatile memory 215, and the version of the file of the updated software data is determined by the software of the current receiving device 63. If it is also a new download version, the download notification information is supplied to the download control unit 252 and the process proceeds to step S43. In step S43, the download control unit 252 determines a download start time of a necessary file (a file having a file number that has not yet been acquired) based on the schedule and file number of the download notification information from the notification information acquisition unit 251. The process proceeds to step S44. In the download notification information, as described above, a plurality of dates and times when the updated software data file is broadcast are indicated, and the dates and times that have not yet elapsed are determined as a plurality of download start times. Is done.

  In step S44, the download control unit 252 performs a time counting operation with the built-in clock and waits until the determined download start time is reached, performs a time counting operation with the built-in clock, and determines the download start time determined. If it is determined that, the process proceeds to step S45. The update software data file download process is actually executed when the user is not viewing the broadcast using the receiving device 63 in order to reduce the load on the receiving device 63.

  In step S45, the download control unit 252 controls the channel selection unit 253 to select the download service described in the download notification information, proceeds to step S46, controls the file acquisition unit 254, and is separated by the demultiplexer 221. The updated software data file (file 81 in the example of FIG. 2) is acquired from the section data thus obtained, temporarily stored in the nonvolatile memory 215, and the process proceeds to step S47 of FIG.

  The processing of steps S45 and S46 will be described in detail. At the date and time (download start time) of the update software data file broadcast, the update software data as described above with reference to FIG. A file is multiplexed with a broadcast signal of a predetermined service and transmitted. This file may be encrypted, or may be added with error detection, error correction code, or the like to prevent transmission errors.

  Since the front end unit 219 receives the broadcast signal from the broadcasting device 62 via the antenna 201, the channel selection unit 253 controls the front end unit 219, and is described in the download notification information from the received broadcast signal. Select the service (channel) that you are using. The front end unit 219 extracts a broadcast signal corresponding to the channel selection of the channel selection unit 253 from the broadcast signal received via the antenna 201, demodulates it, generates a transport stream, and outputs it to the descrambler 220. . The descrambler 220 appropriately de-scrambles the transport stream input from the front end unit 219 and outputs the descrambler 220 to the demultiplexer 221.

  The demultiplexer 221 separates the multiplexed transport stream into a stream such as video or audio data or section data, and in accordance with an instruction from the file acquisition unit 254, the necessary DSM-CC is separated from the separated section data. The updated software data file is supplied from the section to the file acquisition unit 254. The file acquisition unit 254 temporarily stores the updated software data file from the demultiplexer 221 in the nonvolatile memory 215.

  As described above, the update software data file in which various identification information and relevance information with other files described above with reference to FIG. 9 are stored in the nonvolatile memory 215. Accordingly, the download control unit 252 confirms the file information (for example, identification information such as the download version, the total number of files, and the file number) of the update software data in the nonvolatile memory 215 in step S47 of FIG. If it is determined that all files of the updated software data are not complete, the process proceeds to step S48 to determine whether or not the next download start time has been determined. When it is determined that the download start time is determined, the process returns to step S44 in FIG. 11 and the subsequent processing is repeated.

  If it is determined in step S48 of FIG. 12 that the next download start time has not been determined (that is, when all download start times have ended and there is no next download timing), the download control unit 252 In step S49, the file communication unit 255 is controlled to connect to the server 64 via the network 73, and the update software data file is updated from the server 64. A file (file 82 in the example of FIG. 2) is acquired. Specifically, in step S49, the file communication unit 255 controls the network I / F 217 to establish a data link with the server 64 connected to the network 73, and performs FTP (File Transfer Protocol) or HTTP (Hyper Text). The update software data file is acquired via the network 73 by a data transfer protocol such as Transport Protocol), and the process proceeds to step S50.

  In step S50, the download control unit 252 confirms the non-volatile memory 215, and the update software data file version acquired from the server 64 is acquired from the broadcast signal and stored in the non-volatile memory 215. If it is determined whether the version of the data file is newer than the version of the data file, and if it is determined that the version of the updated software data file obtained from the server 64 is newer than the version of the stored file, then in step S51 The unnecessary (old version) updated software data file stored in the memory 215 is deleted, the updated software data file acquired from the server 64 is temporarily stored in the nonvolatile memory 215, and the process proceeds to step S52.

  When it is determined in step S50 that the version of the updated software data file acquired from the server 64 is not newer than the version of the updated software data file stored in the nonvolatile memory 215, the download control unit 252 The process of step S51 is skipped, the updated software data file obtained from the server 64 is temporarily stored in the nonvolatile memory 215, and the process proceeds to step S52. Although explanation is omitted, if the version of the updated software data file acquired from the server 64 is older than the version of the updated software data file stored in the non-volatile memory 215, the version is acquired from the server 64. The updated software data file is not temporarily stored in the nonvolatile memory 215.

  In step S52, the download control unit 252 confirms the non-volatile memory 215, determines whether or not all files of the updated software data are prepared, and determines that all files of the updated software data are prepared. Then, the software construction unit 256 is controlled to construct updated software data from all files stored in the nonvolatile memory 215, and the process proceeds to step S54. In step S54, the software construction unit 256 updates the software of the receiving device 63 using the constructed updated software data, and ends the software update process.

  On the other hand, if it is determined in step S52 that all the files of the updated software data are not complete, the download control unit 252 determines that it cannot acquire all the files of the updated software data from the server 64, and proceeds to step S55. Delete the unnecessary update software data file stored in the volatile memory 215 and terminate the software update process.

  In the above-described processing, when the update software data file cannot be acquired from the broadcast signal in the receiving device 63, that is, at the end of the digital broadcast download period, the file is acquired from the server 64 connected to the network 73. However, the version of an acquirable file may be checked and acquired from the receiving device 63 to the server 64 at regular intervals using a polling method.

  Further, in the above-described processing, when the updated software data file cannot be obtained from the broadcast signal of the digital broadcasting device 62, the updated software data file is obtained from the server 64 via the network 73 in step S49 of FIG. As described above, for example, when the update software data file cannot be obtained from the broadcast signal of the terrestrial digital broadcasting device 62-2 in steps S41 to S46 in FIG. 11 may be executed again using the broadcast signal of −1, or in step S49 of FIG. 12, a predetermined distribution distributed by the manufacturer on the display 202 or the like may be used. An instruction to attach the recording medium 71 is displayed, and the user It may be obtained the file of the update software data from the recording medium 71 mounted more on the drive 218 of the receiving apparatus 63.

  As described above, the update software data is divided into one or more files, and various identification information and relevance information with other files are described in each file. Even if a file is acquired from any of the terrestrial digital broadcasting device 62-2, the server 64, and the recording medium 71 (recording medium), the receiving device 63 does not waste the acquired file, One update software data can be generated from the file, and its own software can be updated. This greatly increases the probability of successful software update.

  Further, as described above, since the updated software data is divided into one or more files, the time required to acquire the software data becomes long, and transmission may not be completed due to disturbance such as AC interruption. Can be prevented from becoming high.

  Further, since it is determined whether the version of the updated software data file acquired from the server 64 is newer than the version of the updated software data file stored in the nonvolatile memory 251, You can update to new software.

  And the above is a general network usage when the transmission bandwidth for broadcast download, which is a shared resource, becomes insufficient as the number of digital broadcast receivers on the market increases in the future. Since it can be used together with a file acquired by broadcast download, the amount of file acquisition via the network can be suppressed. Thus, unlike broadcast downloads, which are often provided almost free of charge, the amount of file acquisition via the network, where the transmission path is charged, can be reduced, reducing the burden on the user's expenses.

  As described above, if a newer version of the file than the file held in the nonvolatile memory is detected by the receiving device regardless of the transmission path and method, the old version of the file already held is discarded, and the new version By collecting version files, it is possible to update the software of the receiving apparatus to the latest version.

  In the above description, the receiving device 63 incorporating the display 202 has been described. However, the receiving device may be connected to an external television device, or may be configured by a set top box or the like. May be. In the above description, the receiver 63 of the fixed receiver has been described. However, the present invention can also be provided to mobile receivers and portable receivers such as PDAs (Personal Digital assistants) and mobile phones.

  The series of processes described above can be executed by hardware, but can also be executed by software. When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a program storage medium in a general-purpose personal computer or the like.

  As shown in FIG. 3 and FIG. 5, a program storage medium that stores a program that is installed in a computer and can be executed by the computer includes a magnetic disk (including a flexible disk), an optical disk (CD-ROM (Compact Recording media (package media) 71 composed of a disc-read only memory (including a DVD (Digital Versatile Disc)), a magneto-optical disc (including an MD (Mini-Disc) (trademark)), or a semiconductor memory, or The ROM 112 and the ROM 212 are configured to store programs temporarily or permanently.

  In the present specification, the steps shown in the flowcharts include not only processes performed in time series according to the order described, but also processes executed in parallel or individually even if not necessarily performed in time series. Is included.

  In the present specification, the term “system” represents the entire apparatus constituted by a plurality of apparatuses.

It is a figure explaining the flow of the software data of the conventional receiver. It is a figure which shows the structural example of the data transmission system of this invention. It is a block diagram which shows the structural example of the file production | generation apparatus of FIG. It is a block diagram which shows the function structural example of the file generation apparatus of FIG. FIG. 3 is a block diagram illustrating a configuration example of a receiving device in FIG. 2. FIG. 6 is a block diagram illustrating a functional configuration example of the receiving apparatus in FIG. 5. It is a flowchart explaining the file production | generation process of the file production | generation apparatus of FIG. It is a figure which shows the structural example of the update software data of the software of the receiver of FIG. It is a figure which shows the structural example of the file produced | generated by the file production | generation apparatus of FIG. It is a figure which shows the structural example of the download notification information transmitted from the broadcasting apparatus of FIG. 3 is a flowchart for explaining software update processing of the receiving apparatus in FIG. 2. 3 is a flowchart for explaining software update processing of the receiving apparatus in FIG. 2.

Explanation of symbols

  51 video signal receiving device, 61 file generating device, 62-1 BS digital broadcasting device, 62-2 terrestrial digital broadcasting device, 63 receiving device, 64 server, 71 recording medium, 72 database, 151 file dividing unit, 152 file conversion , 211 CPU, 212 ROM, 213 RAM, 215 nonvolatile memory, 217 network interface, 218 drive, 251 notification information acquisition unit, 252 download control unit, 253 channel selection unit, 254 file acquisition unit, 255 file communication unit, 256 software Construction Department

Claims (7)

In a signal receiving device that receives a broadcast signal,
Notification information acquisition means for acquiring notification information relating to downloading of the software update file of itself from the received broadcast signal;
First file acquisition means for acquiring the software update file divided into one or more from the broadcast signal based on the notification information acquired by the notification information acquisition means;
Determination means for determining whether or not all the software update files have been acquired by the first file acquisition means;
A second file acquisition unit that acquires the software update file from a predetermined recording medium when the determination unit determines that all the software update files have not been acquired;
A signal receiving apparatus comprising: software update means for updating its own software by combining the software update files acquired by the first file acquisition means and the second file acquisition means. The signal receiving apparatus according to claim 1, wherein the predetermined recording medium is configured by a recording medium included in an information providing apparatus connected via a network. The signal receiving apparatus according to claim 1, wherein the predetermined recording medium includes a detachable recording medium. Old and new judgment means for judging whether or not the software update file acquired by the second file acquisition means is a newer version than the software update file acquired by the first file acquisition means;
When it is determined by the new / old determination means that the software update file acquired by the second file acquisition means is a newer version than the software update file acquired by the first file acquisition means, The signal receiving apparatus according to claim 1, further comprising: a discarding unit that discards the software update file acquired by the first file acquisition unit. In a signal receiving method for receiving a broadcast signal,
A notification information acquisition step of acquiring notification information related to downloading of the software update file of itself from the received broadcast signal;
A first file acquisition step of acquiring the software update file divided into one or more from the broadcast signal based on the notification information acquired by the processing of the notification information acquisition step;
A determination step of determining whether or not all the software update files have been acquired by the processing of the first file acquisition step;
A second file acquisition step of acquiring the software update file from a predetermined recording medium when it is determined by the processing of the determination step that all the software update files have not been acquired;
And a software update step for updating the software by combining the software update files acquired by the process of the first file acquisition step and the process of the second file acquisition step. Method. A program recording medium on which a program for causing a computer to perform a process of receiving a broadcast signal is recorded,
A notification information acquisition step of acquiring notification information related to downloading of the software update file of itself from the received broadcast signal;
A first file acquisition step of acquiring the software update file divided into one or more from the broadcast signal based on the notification information acquired by the processing of the notification information acquisition step;
A determination step of determining whether or not all the software update files have been acquired by the processing of the first file acquisition step;
A second file acquisition step of acquiring the software update file from a predetermined recording medium when it is determined by the processing of the determination step that all the software update files have not been acquired;
A software update step of updating the software by combining the software update files acquired by the processing of the first file acquisition step and the processing of the second file acquisition step. Recorded program recording medium. A program for causing a computer to perform a process of receiving a broadcast signal,
A notification information acquisition step of acquiring notification information related to downloading of the software update file of itself from the received broadcast signal;
A first file acquisition step of acquiring the software update file divided into one or more from the broadcast signal based on the notification information acquired by the processing of the notification information acquisition step;
A determination step of determining whether or not all the software update files have been acquired by the processing of the first file acquisition step;
A second file acquisition step of acquiring the software update file from a predetermined recording medium when it is determined by the processing of the determination step that all the software update files have not been acquired;
A software update step of combining the software update file acquired by the process of the first file acquisition step and the process of the second file acquisition step to update its own software.

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