JP2020129819A - Receiver - Google Patents

Abstract

To provide a receiver capable of obtaining an indication indicating that a security communication is being performed in a state where videos and multimedia contents are displayed on the full screen when the security communication is being performed.SOLUTION: A broadcasting receiver includes a security operation detection unit that detects the communication state of a security communication based on transport layer security (TLS) via a communication unit, and when the cause of an error that occurs during security communication is that a root certificate is on the receiver side, verification with a server certificate which is a connection destination cannot be obtained, the effect that the security communication cannot be executed is displayed over the full screen image since the root certificate currently set cannot confirm the security of the connection destination, and when an authentication process error occurs due to a line failure, etc., the effect that security communication cannot be performed is displayed over the full screen image since the connection cannot be performed within a set time.SELECTED DRAWING: Figure 10

Description

Embodiments relate to a receiver.

Recently, in the field of television broadcasting, various broadcasting systems have been developed, and after the stage of test broadcasting, they are being shifted to actual operation.

For example, in addition to terrestrial digital television, BS digital, and broadband CS digital which are broadcast wave types, advanced BS digital and advanced broadband CS digital are expected to be operated in the future.

Furthermore, the television receiver may be connected to the service provider via the Internet or the like, and may receive the service by the communication function from the service provider.

JP, 2013-9334, A

"Advanced Broadband Satellite Digital Broadcasting Operation Regulations Technical Data" ARIB TR-B39 1.0 version Revised July 6, 2016, General Incorporated Association "Multimedia Coding Method for Digital Broadcasting (2nd Generation)" ARIB STD-B62 Version 1.6 Revised September 29, 2016, Japan Association of Radio Industries and Businesses "Receiver for Advanced Broadband Satellite Digital Broadcasting" ARIB STD-B63 1.5 version Revised March 25, 2016, Japan Association of Radio Industries and Businesses

In the above-mentioned communication function, there are various broadcasting types, and in addition to video and audio services, a communication function for providing data broadcasting service and various data by bidirectional communication has come to be added. When such a communication function is introduced into the broadcasting system, various services can be performed using the communication function, but the transmitted/received data may require confidentiality.

For communication in such a case, security rules in the data transmission system have been established as follows.

In the service using the communication function, the security function may be required when the viewer information is transmitted/received and the service in which fairness needs to be considered.

By the way, there is also a demand for a means for making the viewer aware of the fact that the security communication is performed. Therefore, depending on the receiver, there is a receiver having a display function of displaying, for example, an icon on the screen so that the viewer can know the situation when the security communication is performed.

However, even if security communication is performed, if an icon is displayed on the screen, for example, important display information cannot be seen, and an image displayed on the screen is disturbed.

Therefore, in this embodiment, when security communication is being performed, it is possible to display the fact that the security communication is being performed on the video and the multimedia content as much as possible while displaying the video and the multimedia content on the full screen. Therefore, it is an object of the present invention to provide a receiver capable of obtaining a display indicating that the security communication is being performed so that the above-mentioned security communication is not performed.

According to the embodiment, a receiving unit that receives a broadcast wave including a video stream, an audio stream, and a data broadcast stream, a content processing unit that processes the broadcast wave received by the receiving unit and outputs a video signal, A receiver including a display control unit for displaying the video signal output by the content processing unit on a display screen of a display device in full screen, and a communication unit,
A security operation detection unit that detects a communication state of security communication based on transport layer security (TLS) via the communication unit;
The display control unit further includes
When the communication state detected by the security operation detection unit is during execution of the security communication, the security communication is being executed in a state where the video signal is displayed on the display screen of the display unit in a full screen. In order not to overlap the display of the above with the full-screen display, it is displayed by changing the brightness or color of the light source provided in the frame located around the display screen,
Furthermore, when the communication state detected by the security operation detection unit is a state in which an error occurs during execution of the security communication,
The cause of the error is that the root certificate is on the receiver side, but if it cannot be verified with the server certificate of the connection destination, the security of the connection destination cannot be confirmed with the currently set root certificate, so security The fact that communication cannot be performed is displayed over the video displayed on the full screen,
There is provided a receiver for displaying, in the case where an authentication processing error is caused by a line failure or the like, that security communication cannot be performed because a connection cannot be made within a set time, and the image is displayed on the full screen.

FIG. 1 is a diagram showing an outline of a broadcasting system to which an embodiment according to the present invention is applied. FIG. 2A is a diagram schematically showing a main configuration of a broadcasting station. FIG. 2B is a diagram showing an example of streams and data transmitted on the broadcast wave transmission path. FIG. 3A is a configuration diagram showing in detail the basic function unit of the television receiver. FIG. 3B is a diagram showing a protocol stack included in the receiver. FIG. 4 is a diagram illustrating an example of functional blocks included in the control unit. 5A and 5B show, in the receiver of the embodiment, a normal state in which an image is displayed on the screen of the display 172 (FIG. 5A) and a notification state when security communication is being performed (FIG. )) is a diagram showing an example of FIG. FIG. 6A is a diagram showing another example of a notification state when security communication is being executed in the receiver of the embodiment. FIG. 6B is a diagram showing yet another example of the notification state when security communication is being executed in the receiver of the embodiment. FIG. 6C is a diagram showing still another example of the notification state when the security communication is being executed in the receiver of the embodiment. FIG. 7 is a diagram showing still another example of the notification state on the display unit when the security communication is being executed in the receiver of the embodiment. FIG. 8 is a diagram showing still another example of the notification state on the display unit when the security communication is being executed in the receiver of the embodiment. FIG. 9A shows a normal state in which an image is displayed on the screen of the display (FIG. 9A) and a notification state when security communication is being executed (FIG. 9B) in the receiver of the embodiment. FIG. 8 is a diagram showing another example of FIG. FIG. 9B shows, in the receiver of the embodiment, a normal state in which an image is displayed on the screen of the display (FIG. 9A) and a notification state when security communication is being executed (FIG. 9B). FIG. 8 is a diagram showing still another example of FIG. FIG. 9C shows a normal state in which an image is displayed on the screen of the display (FIG. 9A) and a notification state when security communication is being executed (FIG. 9B) in the receiver of the embodiment. FIG. 8 is a diagram showing another example of FIG. FIG. 9D shows, in the receiver of the embodiment, a normal state in which an image is displayed on the screen of the display (FIG. 9A) and a notification state when security communication is being performed (FIG. 9B). FIG. 8 is a diagram showing still another example of FIG. FIG. 10 is a diagram showing an example of a message output state on the display unit when an error occurs in security communication in the receiver of the embodiment. FIG. 11 shows an example of an error occurrence factor when an error occurs in the security communication in the receiver of the embodiment, and an error message corresponding thereto. FIG. 12 is a diagram showing an example of the structure of the logical plane of the receiver. FIG. 13 is an example showing the relationship between the decoding of the data received by the receiver 100 and the creation of the presentation screen. FIG. 14 shows an example of control of the display position when the presentation screen is displayed on the display 50.

Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows an outline of a broadcasting system to which an embodiment according to the present invention is applied.
<Broadcast station 300>
The broadcasting station 300 includes a broadcasting station server 350 and security 360. Broadcasting station 300 transmits a broadcast signal by radio waves (in this specification, any broadcast wave signal such as BS digital broadcast, broadband CS digital broadcast, advanced BS digital broadcast, advanced broadband CS digital broadcast, terrestrial digital television broadcast, etc.). Send out. Also, the broadcasting station 300 sends out a digital broadcasting signal, application control information, control information related to presentation, and the like, and sends to the service provider device (sometimes referred to as a service provider) 20 metadata about a program based on a contract. And video content can be provided.

The application control information is used for making known to the receiver corresponding to this system the application and the like that are linked with the program, and also includes the command and control information for starting and ending.

Regarding the transmission method of the application control signal, for example, a transmission method by a dedicated ES (Elementary Stream), a data carsel (transmission method of repeatedly transmitting the same data), a control signal file of a control network file placed on the server of the communication network. There is an acquisition method. A hybridcast-compatible receiver, which will be described later, acquires an application from the specified URL according to the instruction of the application control signal, and executes control such as application boundary.

The broadcasting station 300 operates the broadcasting station server 350 in this system. The broadcast station server 350 provides the receiver with metadata such as a program title, a program ID, a program outline, a performer, a broadcast date and time, and other data. Information provided by the broadcasting station 300 to the service provider device 20 is provided through an API (Application Programming Interface) included in the broadcasting station server 350.

In addition, the broadcasting station 300 can exchange data with the service provider device 20 of the hybrid cast specification. That is, the broadcasting station 300 can provide the service provider device 20 with the metadata about the program, the moving image content, and the like based on the contract.
<Service agent device 20>
The service agent device 20 includes a server 21 and an application database 22 for each service. The service provider device 20 is used by the service provider to provide contents for providing services to the receiver 100 by communication via a network such as the Internet, application production/distribution, and to realize individual services. .. The service agent device 20 is also used when the service agent sells and contracts various services to the user. The service provider may also be a platform provider such as a broadcasting station or VOD service.

Further, the service provider device 20 is not necessarily limited to the API when accessed from the receiver 100 which is the user.

The service agent device 20 can manage the application and distribute the application to the receiver 100. The server 21 for each service in this device has a server function for realizing each service (for example, VOD program recommendation service), multilingual subtitle service, social TV service, and the like. Further, the server 21 for each service not only realizes the functional aspect of the service, but also sends out the content (VOD content, subtitle data, etc.) that constitutes the service.

Further, the server 21 for each service has a repository. The repository is registered to distribute applications of this system, and can provide and search a list of applications that can be provided in response to an inquiry from the receiver.
<Receiver 100>
The receiver 100 includes a parabolic antenna for receiving signals from satellites (for BS digital broadcasting or broadband CS digital broadcasting) and a terrestrial antenna for receiving broadcast waves of the terrestrial digital television method. The receiver 100 can receive a broadcast signal transmitted from the broadcast station 300 and receive various broadcast programs and various service information by broadcasting.

The receiver 100 can also receive a service from the service provider 20 by communication via a network such as the Internet. The broadcast service and the communication service may be linked.

A storage medium 31 for recording/reproducing data can be connected to the receiver 100, as well as a display 172 and a speaker system 174 (these may be included in the receiver 100). is there).

The display 172 includes a display 50, which is an area for displaying an image, and a frame 51 arranged around the display 50 to fix the display 50.
<Mobile terminal 700>
The mobile terminal 700 can perform mutual communication with the receiver 100 by the communication function. The mobile terminal 700 can also perform mutual communication with the service provider device 20 by the communication function. The mobile terminal 700 includes, for example, a smartphone, a tablet PC terminal, and the like.

FIG. 2A schematically shows the main configuration of the broadcasting station 300. The broadcasting station 300 includes a video encoder 301, an audio encoder 302, a caption encoder 303, other control data such as transmission control signals and service data, and an attached data generation unit that generates application control information for controlling an application operating on the receiver side. 304 is provided. Further, the broadcasting station 300 cooperates with the broadcasting station server 350, the security function 360, and the transmitting/receiving unit 313.

The transmission control signal generated by the attached data generation unit 304 includes various information and programs called program specific information (PSI: Program Specific Information) and program arrangement information (SI: Service Information) that are defined for program selection. It contains various information specified for the convenience of selection.

The outputs of the video encoder 301, the audio encoder 302, the caption encoder 303, and the attached data generation unit 304 are streamed, and these streams are multiplexed by the multiplexing unit 305. The multiplexed stream (video stream, audio stream, data broadcasting stream, application control information/service data/control data, etc.) is sent to the transmitter 306 as a transport stream, and is transmitted from the antenna by broadcasting radio waves.

The codec type of the video encoder 301 is MPEG-2, H.264. H.264 (AVC: Advance Video Coding), H.264. Any of H.265 (HEVC: High Efficiency Video Coding) may be used, and codecs other than these types may be used.

FIG. 2B shows a broadcast wave transmission path 400 broadcast from the broadcasting station 300. As shown in FIG. 2B, in the broadcast wave transmission line 400, application control information/service data/control data are multiplexed in addition to contents such as a video stream, an audio stream, and a data broadcast stream.

FIG. 3A is a configuration diagram showing in detail the basic function unit of the television receiver 100. The television receiver 100 includes a terrestrial digital tuner 101 for receiving terrestrial digital television broadcasting, a BS tuner 102 for receiving BS digital broadcasting, and a CS tuner 103 for receiving broadband CS digital broadcasting. From the broadcast station, application control information/service data/control data are multiplexed and transmitted in addition to contents such as a video stream, an audio stream, and a data broadcast stream via the above-mentioned broadcast wave transmission path 400. Come on.

When the terrestrial digital television broadcast is received, the broadcast signal is received by the terrestrial digital tuner 101, and the stream of the channel selected from the received broadcast signals is input to the 2K decoder 121.

When a BS digital broadcast is received, the broadcast signal is received by the BS tuner 102, and the stream of the channel selected from the received broadcast signals is sent to the 2K decoder 131, 4K decoder 132, or 8K decoder 133. Is entered. Regarding the 8K decoder 133, there may be a television receiver in which the 8K decoder 133 is not installed.

When a broadband CS digital broadcast is received, the broadcast signal is received by the CS tuner 103, and the stream of the channel selected from the received signals is input to the 2K decoder 141 or 4K decoder 142.

The selector 150 displays the video and audio decoded output of either the 2K decoder 121, the 2K decoder 131, the 4K decoder 132, the 8K decoder 133, the 2K decoder 141, or the 4K decoder 142 on the display 172 or the speaker 174. Switch the path to do so. The decoded output selected by the selector 150 is input to the content processing unit (including the video/audio/caption data processing unit) 160.

When processing content such as video signals, audio signals, and subtitle data, the content processing unit 160 performs color adjustment, brightness adjustment, volume adjustment, subtitle display on/off control, and the like.

The video signal output from the content processing unit 160 is subjected to gamma correction suitable for the function and size of the display 172 having, for example, 8K display capability in the display signal output unit 171, and is output to the display 172. The audio signal output from the content processing unit 160 is converted into an audio channel according to the audio system in the audio signal output unit 173 and output to the speaker 174.

Depending on the receiver (for example, a device that does not include the 8K decoder 133), there is a case where the display 172 having the ability of displaying up to 4K pixels and having the ability adapted to this ability is mounted.

The control unit 180 includes a network I/F 181, a mobile terminal cooperation I/F 182, a remote controller I/F 183, an application control unit 184, and the like.

The network I/F 181 is used when receiving a service by communication such as network service information and a network distribution moving image via a network such as the Internet. The mobile terminal cooperation I/F 182 is used when communicating with a mobile terminal. The remote controller I/F 183 is used to receive various commands from the remote controller 200.

The application control unit 184 performs overall control of processing related to communication services. The application control unit 184 performs, for example, protocol control for receiving a communication service.

In addition, the control unit 180 controls the graphic user I/F (GUI) 191, and, for example, a program table, various messages, and a user use a screen via the graphic user I/F 191 and the display signal output unit 171. A user interface image for giving an operation input can be output.

Furthermore, in the security communication described later, the control unit 180 determines the layout of the contents of the display displayed on the display screen of the display unit 172 in order to notify the user of the communication status, and displays, for example, the display. The security communication status can be displayed so as not to overlap the display content displayed on the display 172 display screen, or a control signal for controlling an indicator provided in the frame of the display 172 can be output, for example. ..

Of course, the control unit 180 can centrally control the functional states of various blocks in the receiver such as the tuner, the decoder, and the content processing unit 160.

Further, according to the operation of the remote controller 200, the control unit 180 controls the tuners, the decoders, the selector 150, and the like described above, and executes the channel selection determination of the channel to be viewed.

The application engine 185 forms an environment for executing an application such as a browser. The application controlled by the application engine 185 is described in HTML5 or the like, for example. The application engine 185 operates the application according to a protocol controlled by the application control unit 184, for example, control information acquired by HTTP, or operates according to an input operation by the user input via the GUI 191.

FIG. 3B shows a protocol stack included in the receiver 100. The receiver 100 has a protocol for realizing a broadcasting function and a protocol for realizing a communication function. 3B1 is a protocol for realizing broadcasting. 3B2 is a protocol for realizing communication. The application control unit 184 controls a protocol required to receive a communication service.

The mobile terminal cooperation I/F 182 is an interface that executes cooperation with an external mobile terminal.

FIG. 4 is a diagram showing a configuration example in the control unit 180 of the receiving device.

The various control units are not limited to the classification shown in the figure, and various control units can be added or removed depending on the installed application. The illustrated example will be described.

180j is a security operation detection unit that detects that the security function is operating. The security operation detection unit 180j cooperates with the protocol control performed by the application control unit 184 to detect whether security communication is set in the protocol control performed by the application control unit 184. When the security operation detection unit 180j detects that security communication is set in the protocol control performed by the application control unit 184, the security operation detection unit 180j notifies the display control unit 180k of a security operation detection notification.

The security communication performed by the application control unit 184 is, for example, when https is set in the scheme (ARIB TR-B39 1.0 version, third volume, chapter 6, communication operation table 6-1). When https is set in the scheme, it is desirable to comply with TLS1.2 security, but other encrypted communication technology may be used.

Further, the security operation detection unit 180j cooperates with the protocol control performed by the application control unit 184 to detect whether an error has occurred in the security communication performed by the application control unit 184. Upon detecting that an error has occurred in the security communication performed by the application control unit 184, the security operation detection unit 180j notifies the display control unit 180k of an error occurrence notification and an error factor.

The display control unit 180k displays the video displayed based on the broadcast service, the video displayed based on the communication service, and the like on the display 50 of the display unit 172 (ARIB STD-B62 5.2). (Corresponding to the presentation function described in 1). In addition, the display control unit 180k responds to the security operation detection notification sent from the security detection unit 180j and displays the video and multimedia contents to the user (viewer) while displaying the full screen of the video and multimedia contents. A display indicating that the security communication is being performed is displayed on the media content so that the display that the security communication is being performed is not a malfunction as much as possible.

The display during execution of the security communication includes a method of displaying it on the display 50 of the display 172 and a method of displaying it on the frame 51 arranged around the display 50, as will be described later.

Furthermore, the display control unit 180k responds to the error occurrence notification and the error factor sent from the security operation detection unit 180j, and displays an error occurrence message (may be referred to as an error message) on the display 50 in a user-friendly manner. Can be displayed.

The control unit 180 further includes a service data analysis unit 180w that receives and analyzes service data, control data, and the like different from the video/audio content.

Further, the control unit 180 includes a tuner control unit 180s, a decoder control unit 180t, a content processing control unit 180u, each output control unit 180v such as audio output.

The tuner control unit 180s operates for tuner selection and switching, and channel selection and switching. The decoder control unit 180t operates to select and switch various decoders. The content processing control unit 180u outputs a control signal related to content (video, audio, subtitle display, etc.).

Each output control unit 180v performs selection of output form of audio signal (stereo output, monaural output, 5 channel output, etc.) and selection of output form of video signal (8K, 4K, 2K output, selection of frame frequency, etc.). .. Therefore, each output control unit 180v determines the type information of the audio system (stereo, monaural, the number of channels, etc.), the display capability information of the connected display device (the information of the number of pixels such as 8K, 4K, 2K, and the adaptive frame frequency). Information).

In addition to the remote controller 200, the device for giving an operation input may be a mobile terminal or an operation button provided in the housing of the receiver 100.

The display control unit 180k also includes an error notification unit when an error occurs during security communication, as will be described later. The error notification unit can display an error occurrence message (may be referred to as an error message) on the display so that the user can easily understand.

In FIG. 5, the display 172 when the security operation detector 180j and the display controller 180k operate is shown by the line of sight of the viewer. The example of FIG. 5A shows a normal state in which an image 50p (multimedia plane) is displayed on the display 50 of the display unit 172 in the receiver 100, and FIG. It shows an example of a state in which the execution of the security communication is notified when the security communication is being executed. As shown in FIG. 5B, in this embodiment, an indicator 52 including, for example, a plurality of light sources 52a, 52b,... 52d is provided in a part of the frame 51 of the display 172. Note that the indicator 52 is not limited in its name, and may be any light source or brightness capable of visually catching the change in the state. The plane will be described with reference to FIGS. 12 to 14.

The light sources 52a, 52b,... 52d are normally off, and when the security communication is being executed, the light sources 52a, 52b,. This allows the viewer to visually catch the change. If the light sources 52a, 52b,... Further, the plurality of light sources may have different colors, and different colors may blink depending on the type of security communication (for example, importance).

It should be noted that the number of light sources may be one, and it is normally turned off, but may be in the form of blinking or lighting when security communication is being executed.

In the example of FIG. 5B, an indicator 52 (light sources 52a, 52b,... 52d) is provided on a part of the right side portion of the frame 51. However, the position at which the indicator 52 is provided is not limited to this position, and various positions such as a lower part of the frame 51, an upper part, a right part, and a corner may be selected. .. The advantage of providing the indicator 52 on the frame 51 is to notify that the security communication is being performed by superimposing it on the video or multimedia content displayed on the display, for example, depending on the display content, the advertisement display or the like is hidden. There is a fear that if the notification is given outside the display 50, the problem can be solved.

FIG. 6A shows another example of a notification state when security communication is being executed in the receiver of the embodiment. In this example, the indicator 52 (light sources 52a, 52b, 52c) is arranged in a part of the lower side of the frame 51, for example, in the left and right central regions. Also in this example, the plurality of light sources may have different colors, and different colors may blink depending on the type (eg, importance) of the security communication. Here, some users want to know that security communication is in progress, and it is desirable to arrange them in the most prominent position, that is, in the left and right central regions. Ergonomically, it is said that the human visual range is biased toward the center of the display screen.

FIG. 6B shows another example of a state in which the receiver of the embodiment gives a notification that the security communication is being executed when the security communication is being executed. In this example, the indicator 52 (light sources 52a, 52b, 52c) is provided in a place different from the frame 51. For example, the indicator 52 may be arranged on a part of the stand 51s that supports the frame 51.

Furthermore, the receiver 100 has a function of cooperating with the mobile terminal 700 through mutual communication. Therefore, for example, a control signal may be transmitted to the mobile terminal 700 (smartphone, tablet PC, etc.) registered in the receiver to display the indicator 52. Further, the remote controller 200 may be provided with the indicator 52. In this case, the remote controller 200 has a reception function for performing mutual communication with the television receiver 100.

FIG. 6C shows still another example of a state in which the receiver of the embodiment gives a notification that the security communication is being executed when the security communication is being executed. This example is another example in which the indicator 52 (light sources 52a, 52b, 52c) is provided at a location different from the frame 51. For example, the indicator 52 may be arranged in the decoration 175 located below the frame 51. The decoration 175 has a configuration including a speaker 174.

FIG. 7 shows still another example of the notification state on the display unit when the security communication is executed in the receiver of the embodiment. In this example, a recess 53 is provided in an end surface (which may be referred to as a thickness surface) 51b of a side portion of the frame 51, and a light source 52x is provided at the bottom of the recess 53. With this configuration, when the light source 52x is turned on, the viewer perceives it as indirect illumination. Therefore, even if the light source 52x is turned on or blinks during the security communication, the viewer can recognize the light source 52x without any trouble.

This embodiment may be the end face of the side of the frame 51 if the user is less interested in the security communication and on the contrary wishes to be placed in an unobtrusive position. In addition, either the embodiment shown in FIGS. 6A to 6C or the embodiment shown in FIG. 7 may be selected at the time of initial setting. Note that when the indicator 52 is provided as in the indirect lighting, it is needless to say that various forms can be implemented without being limited to the embodiment of FIG. 7. For example, a plurality of light sources are used, and the arrangement position of the indicator can be selected in various positions.

FIG. 8 shows still another example of the notification state on the display when the security communication is being executed in the receiver 100 of the embodiment. In this example, a connector mechanism is provided on an end surface (which may be referred to as a thickness surface) 51b on a side portion of the frame 51. The plug 54 is inserted into the connector receiving port. Therefore, in this embodiment, a light source 52y such as an LED is provided for the plug 52y, and this is used as the indicator 52.

FIG. 9A shows a normal state (FIG. 9A(a)) in which the image 50p (multimedia plane) is displayed in the entire area of the display 50 of the display unit 172 in the receiver 100 of the embodiment, and an image in which security communication is performed. An example of a display notification state (FIG. 9A(b)) in which 50p (multimedia plane) is reduced on the display 50 is shown. As shown in FIG. 9A(b), in this embodiment, when security communication is executed, the size of the image 50p (multimedia plane) is reduced to be smaller than the size of the display 50, and the image 50p (multi-media) is displayed. In this state, the media plane) is displayed on the display 50 without omission. In the process of reducing the video 50p (multimedia plane), the display control unit 180k displays the display 50 on the display 50 according to the security operation detection notification sent from the security operation detection unit 180j that detects that security communication is performed. It is implemented by controlling the size of the multimedia plane.

When the image 50p (multimedia plane) is reduced and displayed in the area of the display 50, a residual portion in which the image 50p (multimedia plane) is not displayed occurs in the area of the display 50. The remaining portion is displayed in black, for example. The security-related message 55 is displayed on the black display area via the GUI 191. For example, a display such as “currently updating data” is displayed.

In the example of FIG. 9A(b) above, black areas are generated in the upper, lower, left and right sides of the screen due to the reduction of the image 50p (multimedia plane), but the present invention is not limited to this. The black area may be provided in any one of the upper, lower, left, and right directions of the screen, and the security-related message may be displayed in this area.

FIG. 9B shows a normal state (FIG. 9B(a)) in which the image 50p (multimedia plane) is displayed in the entire area of the display 50 of the display unit 172 in the receiver 100 of the embodiment and the image when security communication is performed. 10B shows another example of the display notification state (FIG. 9B(b)) in which 50p (multimedia plane) is reduced on the display 50. However, this example is an example in which a broadcast screen 50A by radio wave broadcast and a communication screen 50B by data broadcast are simultaneously displayed on the video 50p (multimedia plane). That is, the broadcast screen and the communication screen are simultaneously displayed. As shown in FIG. 9B(b), in this embodiment, when security communication is being performed, the size of the video (multimedia plane) of the broadcast screen 50A and the communication screen 50B is made smaller than the size of the display 50. In this state, the video (multimedia plane) of the broadcast screen 50A and the communication screen 50B is displayed on the display 50 without being lost.

When the video (multimedia plane) of the broadcast screen 50A and the communication screen 50B is reduced and displayed in the area of the display 50, the video (multimedia plane) of the broadcast screen 50A and the communication screen 50B is displayed in the area of the display 50. There is a residual part that is not displayed. The remaining portion is displayed in black, for example. The security-related message 55 is displayed on the black display area via the GUI 191. For example, a display such as “currently updating data” is displayed. In this case as well, black areas are shown at the top, bottom, left and right of the screen, but the present invention is not limited to this. The black area may be provided in any one of the upper, lower, left, and right directions of the screen, and the security-related message may be displayed in this area.

FIG. 9C shows a normal state (FIG. 9C(a)) in which the image 50p (multimedia plane) is displayed in the entire area of the display 50 of the display unit 172 in the receiver 100 of the embodiment, and an image in which security communication is performed. 10C shows still another example of the display notification state (FIG. 9C(b)) in which 50p (multimedia plane) is reduced on the display 50. This example is an example in which a broadcast screen 50A by radio wave broadcast and a communication screen 50B by data broadcast are simultaneously displayed on the video 50p (multimedia plane) as in FIG. 9B, but nothing is displayed on the display 50. This is an example in which the uncommon area 50C exists. When security communication is executed in the display layout of the display 50, as shown in FIG. 9C(b), the broadcast screen 50A and the communication screen 50B are not reduced, and the display 50C portion (black display area) is not displayed. The security-related message 55 is displayed via the GUI 191. For example, a display such as “currently updating data” is displayed.

9D, in the receiver of the embodiment, the security communication is executed with the normal state (FIG. 9D(a)) in which the image 50p (multimedia plane) is displayed in the remaining area of the display 50 of the display 172. It is a figure of another example which shows a display notice state (Drawing 9D (b)). This example is also an example in which the broadcast screen 50A by radio wave broadcast and the communication screen 50B by data broadcast are simultaneously displayed. That is, the broadcast screen and the communication screen are simultaneously displayed. In such a situation, when the security communication is started, as shown in FIG. 9D(b), the indicator 52 provided on the frame 51 arranged around the display 50 indicates that the security communication is being executed. May be displayed, or the indicator 52 provided on a stand or the like, which is a place different from the frame 51, may be blinked and lit to indicate that the security communication is being performed.

FIG. 10 shows an example of a message output state on the display unit when an error occurs in security communication in the receiver of the embodiment. It is preferable to notify the user when an error occurs in the security communication. Therefore, in this embodiment, when an error occurs, the image and the multimedia contents are displayed on the screen, and the error message 60 is displayed over the screen. The example of FIG. 10 shows an example of the embodiment as an embodiment for notifying the security communication state, but any of the embodiments shown in FIGS. 5, 7, 8 and 9A to 9D. Alternatively, the display example of the error message 60 in FIG. 10 may be combined.

Although the error message 60 is displayed in the lower area of the display 50 in FIG. 10, the error message 60 is not limited to this area and may be displayed in any area. Further, the message is not limited to text and may be an icon or the like as long as the viewer (user) can recognize the error occurrence.

FIG. 11 shows an example of an error cause and an error message displayed on the display 50 when an error occurs in the security communication performed by the application control unit 184.

FIG. 12 is a diagram showing an example of a logical plane configured by the receiver 100. The plane is a logical display screen configured by the display control unit 180k for displaying mono media, multimedia, and the like on the display 50. The plane includes a character super plane that displays super characters, a subtitle plane that displays subtitles, a single monomedia such as broadcast video, or a multimedia plane that is used for composite display of multimedia applications, and a background that displays a background color. There is a plane.

The receiver 100 creates each plane based on the data sent by broadcasting or communication, and synthesizes the created planes to form a screen to be presented on the display 50.

FIG. 13 is an example showing a relationship between decoding of data received by the receiver 100 and creation of a screen to be presented.

Each of the streams 1301 received as a broadcast stream or a communication stream is separated by the decoder control unit 180t and decoded (1303). The data decoded by the decoder control unit 180t is sent to the display control unit 180k, and the display control unit 180k creates each plane based on the type of the sent data (1305). When the creation of each plane is completed, the display control unit 180k performs a presentation process. The display control unit 180k configures a screen to be presented on the display 50 of the display unit 172 by performing a presentation process in which the created planes are combined by changing the color gamut and dynamic range as necessary.

In order to display the presented screen on the display 50, the display control unit 180k specifies the display position which is the layout on the display and displays the presented screen on the display 50.

FIG. 14 shows an example of the control of the display position when the display control unit 180k displays the created presented screen on the display 50. FIG. 14A is an example when the display position of the screen presented by the display control unit 180k is not designated. In this case, the screen presented by the display control unit 180k is displayed in the entire area of the display 50. FIG. 14B is an example when the display position of the screen presented by the display control unit 180k is designated. The display position is a case where a rectangular area having diagonal vertices of (0, 0) and (5759, 3239) is designated as the coordinate system (physical coordinate) on the display 50. The area of the screen to be presented displayed in this display area is a rectangular area with the coordinate system (in-plane coordinates) of the plane of the screen to be presented having (0, 0) and (7679, 4319) as the vertices on the diagonal. .. That is, the entire area of the presentation screen. As a result, the entire area of the screen to be presented is reduced and displayed in a rectangular area whose diagonal vertices are (0, 0) and (5759, 3239) in the coordinate system on the display 50. The display area of the display 50 is (0, 0) to (7679, 4319) as the coordinate system on the display. The example of this reduced presentation screen corresponds to the examples of FIGS. 9A(b) and 9B(b).

According to this embodiment, the characteristic part can be put together in various forms as follows. Although the above embodiment describes that TLS is adopted for security communication, the present invention is not limited to this, and it goes without saying that another encryption technique may be used.

According to the present embodiment, a receiver including a video signal processing unit, a display unit, and a communication unit, and control for detecting security communication based on Transport Layer Security (TLS) via the communication unit. Have a section,
When there is no error in the security communication, the control unit displays a notification on the outside of the display screen of the display to notify that a security-related function is operating. (A00) A receiver including a video signal processing unit, a display unit, and a communication unit, and having a control unit for detecting security communication based on transport layer security (TLS) via the communication unit. Then
The control unit is
A receiver, which displays a notification notifying that a security-related function is operating outside the display screen of the display device when there is no error in the security communication.
(A11) A receiver including a video signal processing unit, a display unit, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit is
If there is no error in the security communication, a notification display indicating that a security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the screen of the display screen. The receiver is a display area of the display device in a state where the display area is a reduced display screen, and is a remaining portion in the display area around the reduced display screen.
(A12) In A11, the display screen displays a video image by broadcasting and/or a multimedia content by data broadcasting.
(A13) In A11, the display screen is composed of a plurality of overlapping planes, and images arranged in the respective planes are managed. (B11) A receiver including a video signal processing unit, a display unit, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit is
If there is no error in the security communication, a notification display indicating that a security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the frame of the display unit. And the receiver.
(B12) In B11, the display screen displays video images by broadcasting and/or multimedia contents by data broadcasting.
(B13) In the above B11, the display screen is configured by a plurality of overlapping planes, and the video arranged in each plane is managed.
(C11) A receiver including a video signal processing unit, a display unit, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit is
If there is no error in the security communication, a notification display indicating that a security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the frame of the display unit. Different position from,
Receiving machine.
(C12) In the above C11, the display screen displays a video image by broadcasting and/or a multimedia content by data broadcasting.
(C13) Further, the display screen is composed of a plurality of overlapping planes, and the images arranged in each plane are managed.
(D21) A receiver including a video signal processing unit, a display unit, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit is
When there is no error in the security communication, a notification display indicating that a security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the screen of the display screen. In the display area of the display device in a state in which the area is a reduced display screen, and the remaining portion in the display area around the reduced display screen,
If there is an error in the security communication, a message indicating that an error has occurred is displayed over the display screen,
Receiving machine.
(D22) In D21, the display screen displays video images by broadcasting and/or multimedia contents by data broadcasting.
(D23) Further, the display screen is composed of a plurality of overlapping planes, and the images arranged in each plane are managed.
(E21) A receiver including a video signal processing unit, a display unit, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit is provided.
If there is no error in the security communication, a notification display indicating that a security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the frame of the display unit. age,
If there is an error in the security communication, a message indicating that an error has occurred is displayed over the display screen,
Receiving machine.
(E22) In the above E21, the video image by broadcasting and/or the multimedia content by data broadcasting are displayed on the display screen.
(E23) Further, the display screen is composed of a plurality of overlapping planes, and the images arranged on each plane are managed.
(F21) A receiver including a video signal processing unit, a display unit, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit is
When there is no error in the security communication, a notification display for notifying that a security-related function is operating is displayed outside the display screen of the display, and the location of the notification display is the display of the display. It’s a different position than the frame,
If there is an error in the security communication, a message indicating that an error has occurred is displayed over the display screen,
Receiving machine.
(F22) In F21, the display screen displays a video image by broadcasting and/or a multimedia content by data broadcasting.
(F23) Further, the display screen is composed of a plurality of overlapping planes, and the images arranged in each plane are managed.
(G11) A receiver including a video signal processing unit, a display unit, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit is
When there is no error in the security communication, a notification display indicating that a security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the frame of the display unit. And the receiver is near the left-right center in the lower part of the frame.
(G12) In G11, the display screen displays video images by broadcasting and/or multimedia contents by data broadcasting.
(G13) Further, the display screen is composed of a plurality of overlapping planes, and the video arranged on each plane is managed.
(H41) Further, the following can be subordinated to (A11) to (C12), (D21) to (F22), and (G11).
(a) The frame is provided with a light source whose brightness changes as the display,
(b) The frame is provided with a light source whose color changes as the display,
(c) the light source is the left-right center of the lower portion of the frame,
(d) a plurality of the light sources are provided in the lower portion of the frame,
(e) Equipped with TLS1.2,
(f) It is a communication using "https:... "
(A11) A receiving method of a receiver including a video signal processing unit, a display unit, a communication unit, and a control unit,
Obtain security communication detection signal based on Transport Layer Security (TLS),
When responding to the security communication detection signal,
When there is no error in the security communication, a notification display for notifying that the security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the screen of the display screen. In the display area of the display device in a state in which the area is a reduced display screen, and the remaining portion in the display area around the reduced display screen,
Receiving method of receiver.
(B11) A receiving method of a receiver including a video signal processing unit, a display unit, a communication unit, and a control unit,
Obtain security communication detection signal based on Transport Layer Security (TLS),
When responding to the security communication detection signal,
When there is no security communication error, a notification display indicating that the security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the frame of the display unit. To do
Receiving method of receiver.
(C11) A receiving method of a receiver including a video signal processing unit, a display unit, a communication unit, and a control unit,
A security communication detection signal based on Transport Layer Security (TLS) is obtained via the communication unit,
When responding to the security communication detection signal,
If there is no error in security communication, a notification display for notifying that the security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the frame of the display unit. Different position from,
Receiving method of receiver.
(D21) A receiving method of a receiver including a video signal processing unit, a display unit, a communication unit, and a control unit,
A security communication detection signal based on Transport Layer Security (TLS) is obtained via the communication unit,
When responding to the security communication detection signal,
When there is no error in the security communication, a notification display for notifying that the security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the screen of the display screen. In the display area of the display device in a state in which the area is a reduced display screen, and the remaining portion in the display area around the reduced display screen,
If there is an error in the security communication, a message indicating that an error has occurred is displayed over the display screen,
Receiving method of receiver.
(E21) A receiving method of a receiver including a video signal processing unit, a display unit, a communication unit, and a control unit,
A security communication detection signal based on Transport Layer Security (TLS) is obtained via the communication unit,
When responding to the security communication detection signal,
If there is no error in the security communication, a notification display indicating that the security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the frame of the display unit. ,
If there is an error in the security communication, a message indicating that an error has occurred is displayed over the display screen,
Receiving method of receiver.
(F21) A receiving method of a receiver including a video signal processing unit, a display unit, a communication unit, and a control unit,
A security communication detection signal based on Transport Layer Security (TLS) is obtained via the communication unit,
When responding to the security communication detection signal,
If there is no error in security communication, a notification display for notifying that the security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the frame of the display unit. Different position from
If there is an error in the security communication, a message indicating that an error has occurred is displayed over the display screen,
Receiving method of receiver.
(G11) A receiving method of a receiver including a video signal processing unit, a display unit, a communication unit, and a control unit,
A security communication detection signal based on Transport Layer Security (TLS) is obtained via the communication unit,
When responding to the security communication detection signal,
If there is no error in the security communication, a notification display indicating that the security-related function is operating is displayed outside the display screen of the display unit, and the location of the notification display is the frame of the display unit. And in the vicinity of the left-right center of the lower part of the frame,
Receiving method of receiver.
<Explain security further>
In the service using the communication function, the security function may be required when performing the service that requires the transmission/reception of the viewer information and the fairness. Security functions required at that time include (a) simple mutual authentication function, (b) information protection function, (c) falsification prevention function, and (d) simple proof function.
(A) Simple mutual authentication function When using an application that requires privacy protection or confirmation of a legitimate viewer in communication, it is necessary to confirm the other party and connection destination connected at the initial stage of the transaction. As the means, a mutual (other) authentication function is used.

For mutual authentication, it is desirable to use the “message restoration method”. It is desirable that the information sent to the center should be sent after the time stamp and random number are passed through a one-way function in order to prevent spoofing by the fake viewer by reusing the receiver ID and password.

According to the above-mentioned message restoration method, mutual authentication is possible between the sender of information (message) and the recipient of the information (message). A card ID, a pseudo-random number, and a time stamp are used for encryption, and a communication text is created on the transmission side. In order to decrypt this, the sender and the receiver need a common key for each other. The common key held by the sender is encrypted and sent as common key encryption to the receiver via a route different from the encrypted information (communication text).

If the sender and receiver (verifier) share a common key in advance, it means that when the sender encrypts the communication text using the common key and the receiver decrypts the ciphertext You can be sure of the sender of a message. If no meaningful message is obtained, it means that there has been tampering or a transmission error.
(B) Information protection In a service using the communication function, the service provider may need to know the name and address of the viewer in order to specify the delivery destination like shopping. In a service using such a communication function, it is desirable to consider the following in order to prevent leakage of viewer information from the viewpoint of privacy protection.
-Prevention of eavesdropping on the network-Prevention of leakage within the center-Prevention of entry from outside into the center.
・Handle only necessary personal data and do not use or transfer it for any other purpose without the permission of the person.
・As the functions and operations that the center should perform,
If it is unavoidable to connect to other networks such as the Internet for the expansion of service content, install a firewall to prevent the leakage of viewer information.
(C) Tampering prevention function It is desirable to have a function of detecting that tampering has been performed when there is tampering in the communication path.
(D) Signature function When there is a transaction of money and merchandise (including digital contents) for shopping online, it is necessary to leave evidence of both transactions in order to prevent trouble. In such a case, it is ideal to use a digital signature, but a digital signature cannot be realized without implementing a public key cryptographic function, so a message authenticator that can be used in a system that implements only common key cryptography ( It is desirable to use MAC). However, although it is convinced that it is not the signature result generated by a third party, since the signature recipient can also create the same message, there is no effect on the evasion of the signature creator on the center side.

<Additional explanation regarding security>
In the communication transmission of multimedia service contents, TLS is applied when the scheme is designated by "https:". It is assumed that the security algorithm in TLS will be updated due to security issues. Therefore, when the security algorithm is updated, it is necessary to update the security algorithm operating in the browser by updating the receiver software.

It is necessary that the receiver implements TLS1.2 and has a mechanism to perform encrypted communication by the public key cryptosystem (PKCS).

When an error occurs in the security communication, it is necessary to display the error message shown in FIG. 11 to surely inform the user that the security communication cannot be used. Also, it is possible to implement the communication without executing the communication when an error occurs in the security communication.

The root certificate used in the security communication must comply with TLS1.2 and the certificate for performing encrypted communication by the public key cryptosystem (PKCS) must be available in the browser.

Also, it is desirable that the receiver has a function to display the root certificate that can be used by the browser.

It is expected that a new root certificate will need to be operated due to the expiration date of the root certificate and the update of the security algorithm. Therefore, it is necessary to add a new root certificate in the browser by updating the receiver software.

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 forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are also included in the invention described in the claims and the scope equivalent thereto.

20... Service provider device, 50... Display, 50A... Broadcast screen, 50B... Communication screen, 51... Frame, 52... Indicator, 100... Television receiver, 101 ... terrestrial digital tuner, 102... BS tuner, 103... CS tuner, 121, 131, 132, 133, 141, 142... Decoder, 160... Content processing unit, 171... Display Signal output unit, 172... Display device, 173... Audio signal output unit, 180... Control unit, 180j... Security operation detection unit, 180k... Display control unit, 185... Application engine 186... Terminal control unit, 191... GUI, 200... Remote controller, 300... Broadcasting station 700... Mobile terminal.

Claims (1)

A receiving unit that receives a broadcast wave including a video stream, an audio stream, and a data broadcast stream, a content processing unit that processes the broadcast wave received by the receiving unit and outputs a video signal, and a content processing unit that outputs the video signal. A receiver including a display control unit for displaying the video signal on a display screen of a display device in full screen, and a communication unit,
A security operation detection unit that detects a communication state of security communication based on transport layer security (TLS) via the communication unit;
The display control unit further includes
When the communication state detected by the security operation detection unit is during execution of the security communication, the security communication is being executed in a state where the video signal is displayed on the display screen of the display unit in a full screen. In order not to overlap the display of the above with the full-screen display, it is displayed by changing the brightness or color of the light source provided in the frame located around the display screen,
Furthermore, when the communication state detected by the security operation detection unit is a state in which an error occurs during execution of the security communication,
The cause of the error is that the root certificate is on the receiver side, but if it cannot be verified with the server certificate of the connection destination, the security of the connection destination cannot be confirmed with the currently set root certificate, so security The fact that communication cannot be performed is displayed over the video displayed on the full screen,
A receiver for displaying, on the video displayed on the full screen, a message that the security communication cannot be executed because the connection cannot be established within the set time when the cause of the error is an authentication processing error due to a line failure or the like.

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