JP6914873B2 - Broadcast signal receiving device and broadcasting signal receiving method - Google Patents

Description

The present embodiment relates to a broadcast signal receiving device and a broadcast signal receiving method.

The size of software binaries for broadcast signal receivers is increasing due to higher functionality and higher image quality. For this reason, the scale of software maintenance for broadcast signal receivers is increasing, and the cost and time required to update the software tend to increase. As broadcast signal receivers continue to become more sophisticated and have higher image quality, it is hoped that software update costs and time will be reduced and efficiency will be improved.

Japanese Unexamined Patent Publication No. 2009-49573

"Program layout information standard used for digital broadcasting" ARIB STD-B10 5.11 version Revised on July 27, 2017, Association of Radio Industries and Businesses "Digital Broadcasting Receiver Standard" ARIB STD-B21 5.9 Edition Revised on July 6, 2016, Association of Radio Industries and Businesses "Digital Terrestrial Broadcasting Operation Regulations Technical Data" ARIB TR-B14 6.3 version revised on January 22, 2018, Association of Radio Industries and Businesses

In previous software updates, different software binaries were generated for each model of broadcast signal receiver, so if software updates are performed for multiple types of broadcast signal receivers, the software binaries transmitted by broadcast waves will be generated. There was a problem that the size became large.

Therefore, it is an object of the present embodiment to provide a broadcast signal receiving device and a broadcast signal receiving method corresponding to a plurality of types of updating software in order to efficiently update software.

The broadcast signal receiving device of the present embodiment is a control for selecting update software for updating the receiving device software by using the first information and the second information in the broadcasting signal receiving device that updates the receiving device software. It has a unit and a storage unit that stores the update software selected by the control unit.
The control unit is a broadcast signal receiving device characterized by storing a plurality of combinations of the first information and the second information for specifying update software to be downloaded .
The first information is a module_id which is a module identification of a download content descriptor, and the second information is a broadcast signal receiving method which is a group_id which is information for grouping downloads.

It is a figure which shows the configuration example of the whole system including the broadcast signal transmission device and the broadcast signal reception device which concerns on this embodiment. It is a figure which shows the outline of the broadcast signal receiving apparatus shown in FIG. FIG. 3 is an example of the Compatibility Descriptor used when the television receiver updates the software by the software download service. It is a figure which conceptually showed the content of each software when two kinds of software for updating a television receiver were created. FIG. 5 shows a combination of Compatibility Descriptor and module_id assigned to each update software when managing and operating the model common update software shown in FIG. 4 (A) and the model individual update software shown in FIG. 4 (B). This is an example. FIG. 6 is a diagram showing a processing flow of reception processing of update software in the television receiving device. FIG. 7 is a diagram conceptually showing the contents of the software when it is created as another example of the software for updating the television receiver. FIG. 8 is an example of a combination of Compatibility Descriptor and module_id assigned to each update software when the common partial update software and the machine-dependent partial update software shown in FIG. 7 are managed and operated.

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

FIG. 1 is a diagram showing a configuration example of an entire system including a broadcast signal transmitting device (also referred to as a broadcasting station) 100 and a broadcasting signal receiving device (also referred to as a television receiving device) 140 according to the present embodiment.

The broadcast signal transmission device 100 includes a broadcast program server 101, a download data management unit 102, and a first basic function 103.

The first basic function 103 is a basic function of the broadcasting station 100, and has a function of encoding (also referred to as encoding) a video signal, an audio signal, or the like of a program to be broadcast, multiplexing it, and transmitting it as a broadcast signal. .. Further, the first basic function 103 multiplexes the update software for updating the software of the broadcast signal receiving device (also referred to as the receiving device software) as application data with a video signal, an audio signal, or the like, and sends it as a broadcast signal. The first basic function 103 also multiplexes transmission control signals, which are control information such as video signals, audio signals, and application data, and transmits them as broadcast signals.

The broadcast program server 101 is an area in which a program to be broadcast as a broadcasting station 100, a program title, a program ID, a program outline, a performer name, a broadcast date and time, and other data are stored in advance.

The download data management unit 102 manages the update software for updating the software in the broadcast signal receiving device 140.

The television receiver 140 includes a second basic function 141.

The second basic function 141 is a basic function as a television receiving device 140, which receives a broadcast wave sent from a broadcast station 100 and encodes a video signal (video stream) included in the broadcast wave. (Also called), encoded audio signal (also called audio stream), transmission control signal separation, video signal and audio signal decoding, application data reception, transmission control signal analysis function have.

The second basic function 141 includes peripheral devices connected to the television receiving device 140, for example, a display 160, a speaker 161 and an HDD (Hard Disk Drive) 162 bound to the television receiving device 140, and removable media. It also manages the connection with 170 and the transmission and reception of data.

The display 160 has a built-in speaker 161 and displays the video signal decoded by the second basic function 141 in the display area and outputs the audio signal to the speaker 161. The speaker 161 built in the display 160 may be an external speaker connected by an I / F such as USB.

In the example of FIG. 1, the display 160 is described as a separate body from the television receiving device 140, but may be integrated with the television receiving device 140 as a function of the television receiving device 140.

FIG. 2 is a diagram showing an outline of the broadcast signal receiving device 140 shown in FIG. The television receiver 140 includes a second basic function 141, which is a function of receiving broadcast waves. The television receiver 140 is also connected to the display 160. The display 160 has a built-in speaker 161.

The second basic function 141 includes a broadcast tuner 201, a demultiplexer 202, a descrambler 203, a video decoder 204, an audio decoder 205, a subtitle decoder 206, and a transmission control signal analysis unit 207.

The broadcast tuner 201 demodulates a stream (broadcast signal) transmitted by a broadcast wave. The demodulated stream (broadcast signal) is input to the demultiplexer 202. The demultiplexer 202 separates the input multiplexed stream into a video stream, an audio stream, a subtitle stream, and a transmission control signal, and the video stream, the audio stream, and the subtitle stream are input to the descrambler 203 and the transmission control signal. Is input to the transmission control signal analysis unit 207.

The descrambler 203 descrambles each of the input streams, and inputs the video stream to the video decoder 204, the audio stream to the audio decoder 205, and the subtitle stream to the subtitle decoder 206. The application data is input to the update control unit 208.

The video stream is decoded by the video decoder 204, the audio stream is decoded by the audio decoder 205, and the subtitle stream is decoded by the subtitle decoder 206.

The transmission control signal analysis unit 207 analyzes various control information included in the transmission control signal. The transmission control signal analysis unit 207 can acquire notification information including a software update schedule of the television receiving device 140 by detecting, for example, SDTT (Software Download Trigger Table).

The decoded video signal, subtitles, and display contents of the data broadcast are combined by the synthesizer 326 and output to the display 160.

The audio data decoded by the audio decoder 205 is output to the speaker 161 built in the display 160.

The codec type of the video decoder 204 is H.I. 265, but not limited to this, MPEG-2, H.M. It may be any of 264. The codec type is not limited to this.

Next, the software update of the television receiving device 140 using the broadcast wave will be described.

The television receiving device 140 has processing by software. Therefore, the television receiving device 140 can realize more advanced services and receiving device functions without changing the hardware by updating / adding the software contained therein.

The software download service makes it possible to update the software inside the television receiving device 140 by broadcasting or communication. Broadcasting station 100 transmits software for updating using broadcast waves. The television receiver 140 corresponding to the software download service receives the update software included in the broadcast wave, and updates or adds the internal software using the received update software to update or add functions. conduct.

When the television receiving device 140 updates the software by the software download service, a compatibility descriptor for recognizing that the software is the software to be updated is required.

FIG. 3 is an example of the Compatibility Descriptor used when the television receiving device 140 updates the software by the software download service.

maker_id301 is a value for identifying the manufacturer of the television receiving device 140. model_id302 is a value for identifying the model of the television receiver 140. group_id303 is a value for grouping downloads. version_id is the value of the system version. In addition to these maker_id, model_id, and group_id, the broadcasting station 100 and the television receiving device 140 of the present embodiment provide the module_id, which is the module identification of the download content descriptor, to the television to be downloaded. It is used as information to identify the model of the device. As a result, the television receiving device 140 can update the software of the television receiving device 140 by using the updating software to which the maker_id, model_id, group_id, and module_id are assigned.

FIG. 4 is a diagram conceptually showing the contents of each software when two types of software for updating the television receiving device 140 are created.

Reference numeral 400 in FIG. 4A shows software for updating common to all models. The model common update software 400 is update software for updating software of television receivers 140 of a plurality of models. In the example of FIG. 4A, the model common update software 400 can update the software of the television device 140 of five types of models A, model B, model C, model D, and model E.

The model common update software 400 includes a common part 401, which is an update software part common to all models, and a model-dependent part 402, which is a model-dependent update software part. The machine-dependent portion 402 includes update software for each model. In the example of FIG. 4A, the model-dependent part 402 is the model-dependent part A403 which is the update software for the model A, the model-dependent part B404 which is the update software for the model B, and the update software for the model C. This is an example including a certain model-dependent part C405, a model-dependent part D406 which is update software for model D, and a model-dependent part E407 which is update software for model E.

When the update program is started by the software of the common part 401, the model common update software 400 reads, for example, the program of the model-dependent part corresponding to the model information of the television receiver 140 from the model-dependent part 402. Then, the software of the television receiver 140 is updated as the software that combines the common part and the model-dependent part.

For example, let A be the model of the television receiver 140. In this case, when the update program is started by the software of the common part 401, the update software 400 reads the software of the model-dependent part A403 based on the model information of the television receiver 140, so that the common part 401 and the common part 401 and the update software 400 are read. The software of the television receiver 140 of the model A is updated as the software including the model-dependent portion A403.

As described above, the model common update software 400 has a configuration including a common part and an individual part, so that it is possible to update the software of a plurality of models with one update software.

411, 421, 413, 414, and 415 in FIG. 4B show model-specific update software for each of model A, model B, model C, model D, and model E. The model-specific update software is software that updates only one model that corresponds to each model.

As described above, the broadcasting station 100 and the television receiving device 140 of the present embodiment are model-common update software, which is one update software that can update a plurality of models, and update software that can update only one model. It is possible to manage and operate two types of update software, which are model-specific update software.

By configuring the update software as described above, for example, when updating the television receiver 140 of a certain number of models, the size of the update software can be reduced by using the model common update software 400. In addition to being able to support multiple models, one update software is also efficient in terms of managing the update software. In addition, when it is necessary to update the software of the television receiver 140 only for a specific model, it can be dealt with by using the software for updating each model, so that the software of the television receiver 140 that meets the needs can be updated. It becomes.

Next, a method for managing and operating a plurality of types of update software as shown in FIGS. 4A and 4B will be described.

In order to manage and operate a plurality of types of update software, it is necessary to be able to identify each update software by using the Compatibility Descriptor and module_id shown in FIG.

FIG. 5 shows the Compatibility Descriptor assigned to each update software when the model common update software 400 shown in FIG. 4 (A) and the model individual update softwares 411 to 415 shown in FIG. 4 (B) are managed and operated. This is an example of a combination of and module_id.

The list shown in FIG. 5 shows an example of a combination of model_id, module_id, and group_id for each model to be updated in the model individual update software 511, and an example of a combination of model_id, module_id, and group_id common to all models in the model common update software 512. Is shown. For example, (model_id, module_id, group_id) = {(0x3F, 0x112, 0x2), (0x3F, 0x113, 0x3)} is assigned to the model individual update software 511 for the model A501 of the television receiver 140. , Model B502 is an example in which (model_id, module_id, group_id) = {(0x3F, 0x212, 0x4), (0x3F, 0x213, 0x5)} is assigned.

Further, the model common update software 512 is an example in which common (model_id, module_id, group_id) = {(0x3F, 0x012, 0x0), (0x3F, 0x013, 0x1)} is assigned to the model A501 to the model E505.

The example of FIG. 5 is an example in which both the assignments (module_id, group_id) are changed for each model in the model-specific update software 511. For example, only the module_id may be changed and assigned for each model, or group_id. You may change only and assign it to each model. Alternatively, model_id may be assigned to each model. Further, in the model common update software 512, (model_id, module_id, group_id) other than the example of FIG. 5 may be assigned. in this way,
The example of FIG. 5 shows an example of dividing the update software into two data, the divided data 1 and the divided data 2, but the downloaded data may not be divided or may be divided into three or more. It is possible.

The combination of Compatibility Descriptor and module_id assigned to each update software may be decided by, for example, the administrator of the update software, or may be decided by the creator of the update software, for example, the developer of the television receiver 140. good. The update software to which the combination of Compatibility Descriptor and module_id is assigned is stored in the download data management unit 102 of the broadcasting station 1, and is transmitted as a broadcasting wave from the broadcasting station 1 at a predetermined timing.

The combination (model_id, module_id, group_id) set in the model individual update software 511 and the model common update software 512 is also set in the television receiver 140 to be downloaded in the same manner. The television receiver 140 stores, for example, a combination of (model_id, module_id, group_id) of the update software to be downloaded in the update control unit 208 in order to determine the update software addressed to the own device. The combination of the update software (model_id, module_id, group_id) to be saved may be, for example, both the model-specific update software 511 and the model common update software 512, or either one.

Next, a process in which the television receiver 140 detects the update software addressed to its own device from the update software sent by the broadcast wave will be described.

FIG. 6 is a diagram showing a processing flow of reception processing of the update software on the television receiving device 140.

When the transmission control signal analysis unit 207 detects the SDTT (Software Download Trigger Table) included in the transmission control signal, the television receiver 140 starts the download data acquisition process 600. The transmission control signal analysis unit 207 acquires the SDTT from the transmission control signal (S601) and analyzes it (S602) to obtain the notification information of the software download service. This allows the television receiver 140 to know the schedule for the software download service. The television receiver 140 acquires the update software from the broadcast wave according to the schedule for the software download service found from the notification information (S603).

The update software sent by the broadcast wave as one of the application data is separated by the demultiplexer 202 of FIG. 2 and descrambled by the descrambler 203. The update software descrambled by the descrambler 203 is sent to the update control unit 208. It is determined whether or not the update software input to the update control unit 208 is the update software addressed to the own machine.

Judgment is performed by comparing the combination of (model_id, module_id, group_id) set in the input update software with the combination of (model_id, module_id, group_id) stored in the update control unit 208. ..

As a result of the determination, when the update software sent is the model common update software 512 addressed to the own machine, the update control unit 208 stores the corresponding model common update software 512 in the data storage unit 209. When the acquisition of the corresponding model common update software 512 is completed (Yes in S604), the process ends (S606).

If the update software sent as a result of the determination is not the model common update software 512 addressed to the own machine (No in S604), the update control unit 208 has the model in which the update software sent next is the model addressed to the own machine. It is determined whether or not the software is 512 for individual update.

If the results of the determination match, the update control unit 208 acquires the corresponding model-specific update software 511 and stores it in the data storage unit 209. When the acquisition of the corresponding model individual update software 511 is completed (Yes in S605), the process ends (S606).

If the results of the determination do not match, the update control unit 208 acquires the update software from the application data again (S603).

The update control unit 208 updates the software of the television receiving device 140 at an arbitrary timing by using the update software stored in the data storage unit 209.

The example of FIG. 6 is a case where the television receiver 140 can acquire two types of update software as update software addressed to its own device, but it may be possible to acquire three or more types of update software. ..

FIG. 7 is a diagram conceptually showing the contents of the software when it is created as another example of the software for updating the television receiving device 140.

FIG. 7A is software 701 for updating common parts common to all models, which corresponds to the common part 401 of FIG. 4A. FIG. 7B is software 710 for updating the machine-dependent part corresponding to the machine-dependent part 402 of FIG. 4A. The model-dependent partial update software 710 is update software for each model. In the example of FIG. 7B, as the model-dependent part update software 710, the model-dependent part A711 for model A, the model-dependent part B712 for model B, the model-dependent part C713 for model C, and the model-dependent part for model D are used. This is an example in which the part D714 and the machine-dependent part E715 for the model E exist individually. In this way, it is also possible to use separate update software for the model common part and the model-dependent part.

By configuring the update software as described above, when updating the software of the television receiver 140 with a small number of models, for example, when updating the software of model A and model B, the broadcasting station 1 , The model-specific part update software 701 common to all models, the model-dependent part A711 update software for model A, and the model-dependent part B712 update software for model B can be sent, and the size of the update software can be made as small as possible. It is possible to do.

FIG. 8 is an example of a combination of Compatibility Descriptor and module_id assigned to each update software when the common partial update software 701 and the machine-dependent partial update software 710 shown in FIG. 7 are managed and operated.

The example of FIG. 8 is an example in which (model_id, module_id, group_id) = {(0x3F, 0x012, 0x0), (0x3F, 0x013, 0x1)} is assigned to the common part update software 701, and the model-dependent part update. This is an example in which (model_id, module_id, group_id) = {(0x3F, 0x131, 0x2)} is assigned to the model-dependent part A711 of the software 710.

As described above, the television receiving device 140 updates the software of the television receiving device 140 at an arbitrary timing by using the updating software stored in the data storage unit 209. After storing the update software in the data storage unit 209, the television receiving device 140 may notify the user, for example, that the software of the television receiving device 140 is ready to be updated. The notification that the television receiver 140 is ready to update the software may be, for example, an indication that the display 160 is ready to update the software.

As described above, the broadcast signal transmission device 100 and the television reception device 140 according to the present embodiment can manage and operate a plurality of update software in one model of the broadcast signal reception device 140. One model of the television receiver 140 can update the software of the television receiver 140 by importing a plurality of types of update files having different forms, for example, as shown in FIGS. 5 and 7. ..

Since the television receiver 140 can take in a plurality of types of update files having different forms, it is efficient to update the software of the television receiver 140 in the system including the broadcasting station 100 and the television receiver 140. Can be done

Transmission of update software by broadcast waves cannot be done freely because it uses a limited resource called broadcast waves. Specifically, the period during which update software can be sent is limited, and the size of update software that can be sent at one time is limited.

On the other hand, the update software creator or administrator may want to send the update software as soon as possible in some cases. Further, the update software creator or administrator may want to transmit only the update software of a specific model in order to update the software of the television receiver 140 of only a specific model. It is also desirable for the update software creator or administrator to be able to send as many update software as possible at one time.

In order to match the restrictions on transmitting the update software by broadcasting with the requests of various update software creators or administrators, a plurality of types of update files having different forms in the present embodiment are used. The television receiver 140 capable of capturing the above is very effective.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof. Furthermore, in each of the constituent elements of the claims, even when the constituent elements are divided and expressed, when a plurality of the constituent elements are expressed together, or when these components are expressed in combination, it is within the scope of the present invention. Further, a plurality of embodiments may be combined, and examples composed of these combinations are also within the scope of the invention.

Further, in the present specification and each figure, components exhibiting the same or similar functions as those described above with respect to the above-mentioned figures may be designated by the same reference numerals, and duplicate detailed description may be omitted as appropriate. .. Further, the apparatus of the present invention is applied even when the claim is expressed as a control logic, when it is expressed as a program including an instruction for executing a computer, and when it is expressed as a computer-readable recording medium in which the instruction is described. be. Further, the names and terms used are not limited, and other expressions are included in the present invention as long as they have substantially the same contents and the same purpose.

100 ... Broadcast signal transmitter, 101 ... Broadcast program server, 102 ... Download data management unit, 103 ... First basic function, 140 ... Broadcast signal receiver, 141 ... First 2 basic functions, 207 ... transmission control signal analysis unit, 208 ... update control unit, 209 ... data storage unit

Claims (2)

In the broadcast signal receiver that updates the receiver software,
A control unit for using a first information and second information to select the update software for updating the receiving device software,
A storage unit that stores the update software selected by the control unit, and a storage unit.
Have,
The control unit is a broadcast signal receiving device characterized by storing a plurality of combinations of the first information and the second information for specifying update software to be downloaded .
The first information is a module_id which is a module identification of a download content descriptor, and the second information is a group_id which is information for grouping downloads. In the broadcast signal receiver that updates the receiver software,
A step of selecting update software for updating the receiver software using the first information and the second information, and
The step of saving the selected update software and
A step of saving a plurality of combinations of the first information and the second information for specifying the update software to be downloaded, and
A broadcast signal receiving method comprising,
The first information is a module_id which is a module identification of a download content descriptor, and the second information is a group_id which is information for grouping downloads. A broadcast signal receiving method.

Images