JP2018157549A - Reception method for receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiver and a reception method for the same which can: perform a full-screen display of an image and a multimedia content while security communication is executed; and still show a notice saying that the security communication is executed outside the full-screen display.SOLUTION: A receiver comprises: an image signal processing section; a display; and a communication section. The receiver also has a control section which detects security communication on the basis of transport layer security (TLS) through the communication section.SELECTED DRAWING: Figure 5

Description

  Embodiments relate to a receiver.

  Recently, in the field of television broadcasting, various broadcasting systems have been developed, and are moving to actual operation through a test broadcasting stage.

  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 used in the future.

  In addition, some television receivers can be connected to a service provider via the Internet or the like, and can receive a service using a communication function from the service provider.

JP 2013-9334 A

"Advanced Broadband Satellite Digital Broadcasting Operation Technical Documents" ARIB TR-B39 Version 1.0 Revised on July 6, 2016, Japan Radio Industry Association "Multimedia coding system for digital broadcasting (2nd generation)" ARIB STD-B62 1.6 version Revised on September 29, 2016, The Japan Radio Industry Association "Receiver for Advanced Broadband Satellite Digital Broadcasting" ARIB STD-B63 1.5 Edition Revised on March 25, 2016, Japan Radio Industry Association

  There are various types of broadcasts in the communication function described above, and in addition to video and audio services, a data broadcast service and a communication function for providing various data by bidirectional communication have been added. When such a communication function is introduced into a broadcasting system, various services are possible using the communication function, but confidentiality may be required for transmitted / received data.

  For communication in such a case, rules regarding security in the data transmission method are established as follows.

    In a service using a communication function, when performing a service that requires consideration of transmission / reception of viewer information and fairness, a security function may be required.

  By the way, when security communication is carried out, there is a demand for a means for allowing the viewer to recognize it. For this reason, some receivers have a display function that displays, for example, an icon on the screen so that the viewer can understand the situation when security communication is being performed.

  However, for example, when an icon is displayed on the screen just because security communication is being performed, there are problems that important display information cannot be seen and the video displayed on the screen is disturbed.

  Therefore, in this embodiment, when security communication is being performed, the display that the security communication is being performed on the video and multimedia content in a state where the video and multimedia content are displayed in full screen is as defective as possible. Therefore, an object of the present invention is to provide a receiver and a reception method of the receiver that can obtain an indication that the security communication is being executed.

  According to the embodiment, a receiver including a video signal processing unit, a display, and a communication unit, the control for detecting security communication based on Transport Layer Security (TLS) via the communication unit Part.

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 illustrating an example of a stream and data transmitted through a broadcast wave transmission path. FIG. 3A is a block diagram showing in detail the basic function unit of the television receiver. FIG. 3B is a diagram illustrating a protocol stack included in the receiver. FIG. 4 is a diagram illustrating an example of functional blocks included in the control unit. FIG. 5 shows a normal state in which video is displayed on the screen of the display 172 (FIG. 5A) and a notification state when security communication is being executed (FIG. 5B) in the receiver of the embodiment. It is a figure which shows the example of)). FIG. 6A is a diagram illustrating another example of a notification state when security communication is being executed in the receiver according to the embodiment. FIG. 6B is a diagram illustrating still another example of a notification state when security communication is being executed in the receiver according to the embodiment. FIG. 6C is a diagram illustrating still another example of a notification state when security communication is being executed in the receiver according to the embodiment. FIG. 7 is a diagram illustrating still another example of the notification state on the display when security communication is being executed in the receiver according to the embodiment. FIG. 8 is a diagram illustrating still another example of the notification state on the display when security communication is being executed in the receiver according to the embodiment. FIG. 9A shows a normal state in which a video is displayed on the display screen (FIG. 9A) and a notification state when security communication is being executed (FIG. 9B) in the receiver of the embodiment. It is a figure which shows another example of. FIG. 9B illustrates a normal state where an image is displayed on the display screen (FIG. 9A) and a notification state when security communication is being executed (FIG. 9B) in the receiver of the embodiment. It is a figure which shows the further another example of (). FIG. 9C illustrates a normal state in which a video is displayed on the display screen (FIG. 9A) and a notification state when security communication is being executed (FIG. 9B) in the receiver according to the embodiment. It is a figure which shows another example of. FIG. 9D shows a normal state in which a video is displayed on the display screen (FIG. 9A) and a notification state when security communication is being executed (FIG. 9B) in the receiver of the embodiment. It is a figure which shows the further another example of (). FIG. 10 is a diagram illustrating an example of a message output state on the display when an error occurs in security communication in the receiver according to the embodiment. FIG. 11 is an example of an error generation factor and an error message corresponding to the error generation factor when an error occurs in the security communication in the receiver according to the embodiment. FIG. 12 is a diagram illustrating an example of the structure of the logical plane of the receiver. FIG. 13 is an example showing a relationship between decoding of data received by the receiver 100 and creation of a presentation screen. FIG. 14 shows an example of display position control when a presentation screen is displayed on the display 50.

Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows an overview of a broadcasting system to which an embodiment according to the present invention is applied.
<Broadcasting station 300>
The broadcast station 300 includes a broadcast station server 350 and a security 360. The broadcast 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 it out. The broadcast station 300 transmits digital broadcast signals, application control information, control information related to presentation, and the like, and also provides metadata related to programs to a service provider apparatus (also referred to as a service provider) 20 based on a contract. And video content can be provided.

  The application control information not only notifies the application linked with the program to the receiver corresponding to the present system, but also includes a command for starting / ending, control information, and the like.

  With regard to the transmission method of application control signals, for example, a transmission method using a dedicated ES (Elementary Stream), a data car cell (a transmission method that repeatedly transmits the same data), and a control signal file placed on a server of a communication network. There is an acquisition method. A hybrid cast compatible receiver, which will be described later, acquires an application from a specified URL in accordance with an instruction of an application control signal, and executes control such as an application boundary.

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

In addition, the broadcasting station 300 can exchange data with the service provider apparatus 20 of the hybrid cast specification. That is, the broadcast station 300 can provide metadata related to a program, video content, and the like to the service provider apparatus 20 based on the contract.
<Service provider device 20>
The service provider apparatus 20 includes a server 21 and an application database 22 for each service. The service provider apparatus 20 is used by the service provider to realize content, application production / distribution, and individual services for providing the receiver 100 with a service by communication via a network such as the Internet. . The service provider apparatus 20 is also used when the service provider 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 apparatus 20 is not necessarily limited to the API when accessed from the receiver 100 as a user.

  The service provider apparatus 20 can manage the application and distribute the application to the receiver 100. The server 21 for each service in the apparatus has a server function for realizing individual services (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 aspects of the service, but also transmits content (VOD content, caption data, etc.) constituting the service.

The server 21 for each service includes a repository. The repository is registered in order to distribute the application 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 that receives a signal from a satellite (for BS digital broadcasting or broadband CS digital broadcasting), and a terrestrial antenna that receives a broadcasting wave of the terrestrial digital television method. The receiver 100 can receive a broadcast signal sent 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 through communication via a network such as the Internet. The broadcast service and the communication service may be linked.

  The storage medium 31 for data recording / playback can be connected to the receiver 100, and a display 172 and a speaker system 174 can also be connected (these may be already included in the receiver 100). is there).

The display 172 includes a display 50 that is an area for displaying an image, and a frame 51 that is disposed around the display 50 in order to fix the display 50.
<Mobile terminal 700>
The portable terminal 700 can perform mutual communication with the receiver 100 using a communication function. The portable terminal 700 can also perform mutual communication with the service provider apparatus 20 using a communication function. The portable terminal 700 includes, for example, a smart phone and a tablet PC terminal.

  FIG. 2A schematically shows the main configuration of the broadcast station 300. The broadcast station 300 includes a video encoder 301, an audio encoder 302, a subtitle encoder 303, other control data such as a transmission control signal, 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. The broadcast station 300 is linked to the broadcast station server 350, the security function 360, and the transmission / reception unit 313.

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

  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 broadcast stream, application control information / service data / control data, etc.) is sent to the transmitter 306 as a transport stream and transmitted from the antenna by broadcast radio waves.

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

  FIG. 2B shows a broadcast wave transmission path 400 broadcast from the broadcast station 300. As shown in FIG. 2B, the broadcast wave transmission path 400 multiplexes application control information / service data / control data 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 broadcasts, a BS tuner 102 for receiving BS digital broadcasts, and a CS tuner 103 for receiving broadband CS digital broadcasts. In addition to the contents such as the video stream, the audio stream, and the data broadcast stream, application control information / service data / control data are multiplexed and transmitted from the broadcasting station via the broadcast wave transmission path 400 described above. Come.

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

  When the 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 signal is sent to the 2K decoder 131, the 4K decoder 132, or the 8K decoder 133. Entered. As for the 8K decoder 133, there may be a television receiver in which the 8K decoder 133 is not mounted.

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

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

  The content processing unit 160 performs color adjustment, brightness adjustment, volume adjustment, caption display on / off control, and the like when processing content such as a video signal, an audio signal, and caption data.

  The video signal output from the content processing unit 160 is subjected to, for example, gamma correction suitable for the function and size of the display 172 having 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 corresponding to the audio system by the audio signal output unit 173 and output to the speaker 174.

  Note that some receivers (for example, devices that do not include the 8K decoder 133) have the capability of displaying up to 4K pixels, and a display 172 having the capability adapted to this capability may be installed.

  The control unit 180 includes a network I / F 181, a portable 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 video via a network such as the Internet. The portable terminal cooperation I / F 182 is used when communicating with a portable 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. For example, the application control unit 184 performs protocol control for receiving a communication service.

  Further, the control unit 180 controls the graphic user I / F (GUI) 191, and, for example, a program guide, 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, the control unit 180 determines the layout of the display content displayed on the display screen of the display 172 in order to notify the user of the communication status in security communication to be described later. The security communication status can be displayed so as not to overlap the display content displayed on the display screen of the display unit 172, or a control signal for controlling an indicator provided on the frame of the display unit 172 can be output, for example. .

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

  Further, in accordance with the operation of the remote controller 200, the control unit 180 controls each tuner, each decoder, the selector 150, etc., and executes channel selection determination for 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, for example, HTML5. 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 the application according to an input operation from the user input via the GUI 191.

  FIG. 3B shows a protocol stack provided in the receiver 100. The receiver 100 includes 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 necessary for receiving 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 illustrating a configuration example in the control unit 180 of the receiving apparatus.

  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.

  A security operation detection unit 180j detects that the security function is operating. The security operation detection unit 180j detects whether security communication is set in the protocol control performed by the application control unit 184 in cooperation with the protocol control performed by the application control unit 184. When detecting that the 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, Operation of communication Table 6-1). When https is set in the scheme, it is desirable to follow TLS 1.2 security, but other encrypted communication techniques may be used.

  The security operation detection unit 180j detects whether an error has occurred in the security communication performed by the application control unit 184 in cooperation with the protocol control performed by the application control unit 184. When 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 presents a display function (ARIB STD-B62 5.2) that displays on the display 50 of the display 172 a video that is displayed based on a broadcast service and a video that is displayed based on a communication service. (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 to the user (viewer) with the video and multimedia content displayed in full screen. A display indicating that the security communication is being performed is performed so that the display indicating that the security communication is being performed on the media content does not cause a problem as much as possible.

  The display that the security communication is being executed includes a method of displaying on the display 50 of the display 172, a method of displaying on the frame 51 arranged around the display 50, and the like, as will be described later.

  Further, the display control unit 180k displays an error occurrence message (may be referred to as an error message) on the display 50 in an easy-to-understand manner on the display 50 in response to the error occurrence notification and the error factor sent from the security operation detection unit 180j. 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.

  The control unit 180 includes a tuner control unit 180s, a decoder control unit 180t, a content processing control unit 180u, and output control units 180v such as an audio output.

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

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

  In addition to the remote controller 200, the device that gives the operation input may be a portable terminal or an operation button provided on 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 in a manner that is easy for the user to understand.

  In FIG. 5, the display 172 when the security operation detection unit 180j and the display control unit 180k are operated is indicated by a line of sight as viewed from the viewer. The example of FIG. 5A shows a normal state in which the video 50p (multimedia plane) is displayed on the display 50 of the display 172 in the receiver 100, and FIG. An example of a state in which security communication is being executed when security communication is being executed is shown. As shown in FIG. 5B, in this embodiment, an indicator 52 including a plurality of light sources 52a, 52b,... 52d is provided on a part of the frame 51 of the display 172, for example. Note that the name of the indicator 52 is not limited. In short, the indicator 52 may be a light source or a luminance that can visually detect a change in state. The plane will be described with reference to FIGS.

  The light sources 52a, 52b,... 52d are normally off, and when security communication is being performed, the light sources 52a, 52b,. Thereby, the viewer can catch the change visually. When the light sources 52a, 52b,... 52d are sequentially turned on cyclically, the cyclic speed may be different depending on the type of security communication (for example, importance). In addition, the plurality of light sources may have different colors, and different colors may blink depending on the type (for example, importance) of security communication.

  The number of light sources may be one, and is normally off. However, when security communication is being performed, the light source may be blinked or lit.

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

  FIG. 6A illustrates another example of a notification state when security communication is being executed in the receiver according to the embodiment. In this example, the indicator 52 (light sources 52a, 52b, 52c) is disposed 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 of security communication (for example, importance). Here, it is a case where some users want to know that the security communication is being performed, and it is desirable to arrange them in the most prominent position, that is, in the left and right central areas. Ergonomically, it is said that the human visual range is biased toward the center of the display screen.

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

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

  FIG. 6C illustrates still another example of a state in which notification is being performed during execution of security communication when security communication is being executed in the receiver according to the embodiment. This example is another example in which the indicator 52 (light sources 52 a, 52 b, 52 c) is provided at a location different from the frame 51. For example, the indicator 52 may be disposed on the decoration 175 located below the frame 51. The decoration 175 includes a speaker 174.

  FIG. 7 shows still another example of the notification state on the display when security communication is being executed in the receiver according to the embodiment. In this example, a recess 53 is provided on an end surface (also referred to as a thickness surface) 51 b of a side portion of the frame 51, and a light source 52 x is provided on the bottom of the recess 53. In such a configuration, when the light source 52x is turned on, the viewer recognizes it as indirect illumination. Therefore, even when the light source 52x is lit or blinking when security communication is being performed, the viewer can be made to recognize without any distractions.

This embodiment may be the end face of the side portion of the frame 51 when the user is not very interested in the security communication and desires to be installed in an inconspicuous position.
Moreover, you may enable it to select either embodiment shown to FIG. 6A-FIG. 6C, or embodiment shown in FIG. 7 at the time of an initial setting. In addition, when providing the indicator 52 like indirect illumination, it is not restricted to embodiment of FIG. 7, Of course, various forms can be implemented. For example, a plurality of light sources are used, and the position of the indicator can be selected from various positions.

  FIG. 8 shows still another example of the notification state on the display when 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) 51 b of the side portion of the frame 51. A plug 54 is inserted into the connector receptacle. 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 video 50p (multimedia plane) is displayed in the entire area of the display 50 of the display 172 in the receiver 100 of the embodiment, and video after security communication is executed. 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 performed, the video 50p (multi-media) is displayed in a state in which the size of the video 50p (multimedia plane) is smaller than the size of the display 50. The media plane is displayed on the display 50 without being lost. The process of reducing the video 50p (multimedia plane) is performed by the display control unit 180k on the display 50 in accordance with the security operation detection notification sent from the security operation detection unit 180j that has detected that security communication is being performed. This is implemented by controlling the size of the multimedia plane.

  When the video 50p (multimedia plane) is reduced and displayed with respect to the area of the display 50, a remaining portion in which the video 50p (multimedia plane) is not displayed in the area of the display 50 is generated. This remaining portion is displayed in black, for example. A security related message 55 is displayed on the black display area via the GUI 191. For example, a display such as “Now updating data” is performed.

  In the example of FIG. 9A (b), black areas are generated on the top and bottom and the left and right of the screen due to the reduction of the video 50p (multimedia plane). However, the present invention is not limited to this. The black area may be prepared in one of the top and bottom and the left and right directions of the screen, and a security-related message may be displayed in this area.

  FIG. 9B illustrates a normal state (FIG. 9B (a)) in which the video 50p (multimedia plane) is displayed in the entire area of the display 50 of the display 172 in the receiver 100 according to the embodiment, and video after security communication is executed. Another example of the display notification state (FIG. 9B (b)) in which 50p (multimedia plane) is reduced on the display 50 is shown. However, this example is an example in which a broadcast screen 50A by radio 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 displayed at the same time. 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 reduced more 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 will be residual parts that are not displayed. This remaining portion is displayed in black, for example. A security related message 55 is displayed on the black display area via the GUI 191. For example, a display such as “Now updating data” is performed. Also in this case, black areas are shown on the top, bottom, left and right of the screen, but the present invention is not limited to this. The black area may be prepared in one of the top and bottom and the left and right directions of the screen, and a security-related message may be displayed in this area.

  FIG. 9C illustrates a normal state (FIG. 9C (a)) in which the video 50p (multimedia plane) is displayed in the entire area of the display 50 of the display 172 in the receiver 100 according to the embodiment, and video after security communication is executed. Still another example of the display notification state (FIG. 9C (b)) in which 50p (multimedia plane) is reduced on the display 50 is shown. In this example, as in FIG. 9B, a broadcast screen 50A by radio broadcast and a communication screen 50B by data broadcast are simultaneously displayed on the video 50p (multimedia plane), but nothing is displayed on the display 50. This is an example in which an unnecessary area 50C exists. In the display layout on the display 50, when security communication is executed, as shown in FIG. 9C (b), the broadcast screen 50A and the communication screen 50B are not reduced, and the portion of the display 50C (black display area). In response to this, a security related message 55 is displayed via the GUI 191. For example, a display such as “Now updating data” is performed.

  FIG. 9D shows a normal state in which the video 50p (multimedia plane) is displayed in the remaining area of the display 50 of the display 172 (FIG. 9D (a)) and security communication is performed in the receiver according to the embodiment. It is a figure of the further another example which shows a display notification state (Drawing 9D (b)). This example is also an example in which a broadcast screen 50A by radio broadcast and a communication screen 50B by data broadcast are displayed at the same time. That is, the broadcast screen and the communication screen are displayed at the same time. Under such circumstances, 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 an indicator 52 provided on a stand or the like that is different from the frame 51, for example, may be flashed and lit to indicate that security communication is being performed.

  FIG. 10 illustrates an example of a message output state on the display when an error occurs in security communication in the receiver according to 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 error message 60 is displayed over the screen in a state where the video and the multimedia content are displayed on the screen. The example of FIG. 10 shows an example of the embodiment in FIG. 6 as an embodiment for notifying the security communication state, but any of the embodiments shown in FIGS. 5, 7, 8, 9A to 9D. The display example of the error message 60 in FIG. 10 may be combined.

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

  FIG. 11 shows an example of an error factor 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 illustrating an example of a logical plane configured by the receiver 100. A 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 superplane that displays characters, a subtitle plane that displays subtitles, a single media such as broadcast video, or a multimedia plane that is composited for multimedia applications, and a background that displays the background color. There is a plane.

  The receiver 100 creates each plane based on data sent by broadcasting or communication, and composes the created planes to compose 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 stream 1301 received as a broadcast stream or a communication stream is subjected to separation processing and decoding processing by the decoder control unit 180t (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 changed and combined as needed to change the color gamut and dynamic range.

  In order to display the screen to be presented on the display 50, the display control unit 180k designates a display position that is a layout on the display and displays the presentation screen on the display 50.

  FIG. 14 shows an example of display position control when the display control unit 180k displays the created screen to be presented on the display 50. FIG. 14A shows an example in which the display position of the screen presented by the display control unit 180k is not specified. In this case, the screen presented by the display control unit 180k is displayed on 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 (0, 0) and (5759, 3239) as vertices on a diagonal line is designated as a coordinate system (physical coordinates) on the display 50. The area of the screen to be displayed to be displayed in this display area is a rectangular area having a plane coordinate system (in-plane coordinates) of the screen to be presented and having (0, 0) and (7679, 4319) as vertices on a diagonal line. . That is, the entire area of the presentation screen. Thus, the entire area of the screen to be presented is reduced and displayed in a rectangular area having (0, 0) and (5759, 3239) in the coordinate system on the display 50 as vertices on the diagonal line. The display area of the display 50 is (0, 0) to (7679, 4319) as a coordinate system on the display. Examples of the reduced presentation screen correspond 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. In the above-described embodiment, it is described that TLS is adopted for the security communication. However, the present invention is not limited to this, and other encryption techniques may be used.

According to the present embodiment, the receiver includes a video signal processing unit, a display, and a communication unit, and detects security communication based on Transport Layer Security (TLS) via the communication unit. Part
When there is no error in the security communication, the control unit performs a notification display for notifying that a function related to security is operating outside the display screen of the display unit.
(A00) A receiver including a video signal processing unit, a display, and a communication unit, and having a control unit that detects security communication based on Transport Layer Security (TLS) via the communication unit. And
The controller is
A receiver that, when there is no error in the security communication, displays a notification outside the display screen of the display device to notify that a function related to security is operating.
(A11) A receiver including a video signal processing unit, a display, and a communication unit,
Based on Transport Layer Security (TLS) via the communication unit, a control unit that detects security communication,
The controller is
When there is no error in the security communication, a notification display indicating that a function related to security is operating is performed outside the display screen of the display, and the location of the notification display is the screen of the display screen A receiver in a display area of the display in a state where the area is a reduced display screen, and a remaining part in the display area around the reduced display screen.
(A12) In the above A11, the display screen displays video by broadcast and / or multimedia content by data broadcast.
(A13) In the above A11, the display screen is composed of a plurality of overlapping planes, and images arranged on each plane are managed.
(B11) A receiver including a video signal processing unit, a display, and a communication unit,
Based on Transport Layer Security (TLS) via the communication unit, a control unit that detects security communication,
The controller is
If there is no error in the security communication, a notification display indicating that a function relating to security is operating is performed outside the display screen of the display, and the location of the notification display is the frame of the display And receiver.
(B12) In B11, the display screen displays a video image by broadcasting and / or multimedia content by data broadcasting.
(B13) In B11, the display screen is composed of a plurality of overlapping planes, and images arranged on each plane are managed.
(C11) A receiver including a video signal processing unit, a display, and a communication unit,
Based on Transport Layer Security (TLS) via the communication unit, a control unit that detects security communication,
The controller is
If there is no error in the security communication, a notification display indicating that a function relating to security is operating is performed outside the display screen of the display, and the location of the notification display is the frame of the display And a different position,
Receiving machine.
(C12) In C11, the display screen displays a video image by broadcasting and / or multimedia content by data broadcasting.
(C13) Further, the display screen is composed of a plurality of overlapping planes, and the images arranged on each plane are managed.
(D21) A receiver including a video signal processing unit, a display, and a communication unit,
Based on Transport Layer Security (TLS) via the communication unit, a control unit that detects security communication,
The controller is
When there is no error in the security communication, a notification display indicating that a function relating to security is operating is performed outside the display screen of the display, and the location of the notification display is the screen of the display screen In the display area of the display in a state where the area is a reduced display screen, 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 on the display screen.
Receiving machine.
(D22) In D21, the display screen displays a video image by broadcasting and / or a multimedia content by data broadcasting.
(D23) Further, the display screen is composed of a plurality of overlapping planes, and images arranged on each plane are managed.
(E21) A receiver including a video signal processing unit, a display, and a communication unit,
Based on Transport Layer Security (TLS) via the communication unit, a control unit that detects security communication,
The controller is
If there is no error in the security communication, a notification display indicating that a function relating to security is operating is performed outside the display screen of the display, and the location of the notification display is the frame of the display age,
If there is an error in the security communication, a message indicating that an error has occurred is displayed on the display screen.
Receiving machine.
(E22) In the above E21, the display screen displays video by broadcast and / or multimedia content by data broadcast.
(E23) Further, the display screen is composed of a plurality of overlapping planes, and images arranged on each plane are managed.
(F21) A receiver including a video signal processing unit, a display, and a communication unit,
Based on Transport Layer Security (TLS) via the communication unit, a control unit that detects security communication,
The controller is
When there is no error in the security communication, a notification display for notifying that a function related to security is operating is performed outside the display screen of the display, and the location of the notification display is the display of the display It is a different position from the frame,
If there is an error in the security communication, a message indicating that an error has occurred is displayed on the display screen.
Receiving machine.
(F22) In the above F21, the display screen displays video by broadcast and / or multimedia content by data broadcast.
(F23) Further, the display screen is composed of a plurality of overlapping planes, and images arranged on each plane are managed.
(G11) A receiver including a video signal processing unit, a display, and a communication unit,
Based on Transport Layer Security (TLS) via the communication unit, a control unit that detects security communication,
The controller is
If there is no error in the security communication, a notification display indicating that a function relating to security is operating is performed outside the display screen of the display, and the location of the notification display is the frame of the display And near the center of the left and right in the lower part of the frame,
Receiving machine.
(G12) In G11, the display screen displays a video image by broadcasting and / or multimedia content by data broadcasting.
(G13) Further, the display screen is composed of a plurality of overlapping planes, and the images arranged on each plane are managed.
(H41) Further, the following can be made subordinate to (A11) to (C12), (D21) to (F22), and (G11).
(a) The frame is provided with a light source whose luminance changes as the display,
(b) The frame is provided with a light source that changes color as the display.
(c) the light source is the left and right center of the lower part of the frame,
(d) a plurality of the light sources are provided in the lower part of the frame,
(e) Equipped with TLS1.2,
(f) Communication using “https:...” can be used, or any one or more of them can be combined.
(A11) A reception method of a receiver including a video signal processing unit, a display, 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 for notifying that a function related to security is operating is performed 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 in a state where the area is a reduced display screen, the remaining area in the display area around the reduced display screen,
Receiver receiving method.
(B11) A reception method of a receiver including a video signal processing unit, a display, 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 a function relating to security is operating is performed outside the display screen of the display, and the location of the notification display is the frame of the display To
Receiver receiving method.
(C11) A reception method of a receiver including a video signal processing unit, a display, a communication unit, and a control unit,
Obtaining a security communication detection signal based on Transport Layer Security (TLS) via the communication unit,
When responding to the security communication detection signal,
When there is no security communication error, a notification display for notifying that a function related to security is operating is performed outside the display screen of the display, and the location of the notification display is the frame of the display And a different position,
Receiver receiving method.
(D21) A receiver receiving method including a video signal processing unit, a display, a communication unit, and a control unit,
Obtaining a security communication detection signal based on Transport Layer Security (TLS) via the communication unit,
When responding to the security communication detection signal,
When there is no security communication error, a notification display for notifying that a function related to security is operating is performed 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 in a state where the area is a reduced display screen, 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 on the display screen.
Receiver receiving method.
(E21) A receiver receiving method including a video signal processing unit, a display, a communication unit, and a control unit,
Obtaining a security communication detection signal based on Transport Layer Security (TLS) via the communication unit,
When responding to the security communication detection signal,
If there is no security communication error, a notification display indicating that a function related to security 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 on the display screen.
Receiver receiving method.
(F21) A reception method of a receiver including a video signal processing unit, a display, a communication unit, and a control unit,
Obtaining a security communication detection signal based on Transport Layer Security (TLS) via the communication unit,
When responding to the security communication detection signal,
When there is no security communication error, a notification display for notifying that a function related to security is operating is performed outside the display screen of the display, and the location of the notification display is the frame of the display And a different position
If there is an error in the security communication, a message indicating that an error has occurred is displayed on the display screen.
Receiver receiving method.
(G11) A reception method of a receiver including a video signal processing unit, a display, a communication unit, and a control unit,
Obtaining a security communication detection signal based on Transport Layer Security (TLS) via the communication unit,
When responding to the security communication detection signal,
If there is no security communication error, a notification display indicating that a function related to security 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 vicinity of the left and right center in the lower part of the frame,
Receiver receiving method.
<Further security explanation>
In a service using a communication function, a security function may be required when performing a service that requires consideration of transmission / reception of viewer information and fairness. The security functions required at that time include (a) simple mutual authentication function, (b) information protection function, (c) falsification prevention function, and (d) simple certification function.
(A) Simple mutual authentication function When using an application that requires privacy protection or confirmation of regular viewers in communication, it is necessary to confirm the partner / connection destination connected at the initial stage of the transaction. A mutual (partner) authentication function is used as the means.

In mutual authentication, it is desirable to use the “message recovery method”.
In order to prevent fake viewers from impersonating by reusing the receiver ID and password, it is desirable to send the information sent to the center through a one-way function after sending the time stamp and random number.

  In the above-described message restoration method, mutual authentication is possible between the information (communication message) sending side and the information (communication message) receiving side. For encryption, a card ID, a pseudo random number, and a time stamp are used, and a communication text is created on the transmission side. In order to decipher this, the sending side and the receiving side need a common key. The common key held by the sending side is encrypted and sent to the receiving side as a common key cipher along a route different from the encrypted information (communication text).

When the sender / receiver (verifier) shares a common key in advance, it is meaningful to encrypt the communication text on the sender side using the common key and decrypt the ciphertext at the receiver. If it is a certain message, the sender can be convinced. If a meaningful message cannot be obtained, it means that the message has been tampered with or transmitted.
(B) Information protection In a service using a communication function, in order to specify a delivery destination like shopping, the service provider may need to know the name and address of the viewer. In services using such communication functions, it is desirable to consider the following in order to prevent leakage of viewer information and the like from the viewpoint of privacy protection.
・ Prevents eavesdropping on the network ・ Prevents leakage inside the center ・ Prevents entry from outside to the center
・ Handling only necessary personal data and not using it for other purposes or transferring it without permission from the person,
・ As functions and operations that the center should perform,
When expanding the service content, if it is unavoidable to connect to other networks such as the Internet, make efforts to prevent leakage of viewer information by installing a firewall.
(C) Anti-tampering function It is desirable to have a function of detecting that tampering has been performed when tampering occurs in the communication path.
(D) Signature function When there is a transaction of money and merchandise (including digital contents) that makes shopping online, it is necessary to leave evidence of both of the transactions in order to prevent troubles. In such a case, it is ideal to use a digital signature, but since a digital signature cannot be realized without implementing a public key cryptography function, a message authenticator that can also be used in a system that implements only a common key cryptography ( It is desirable to use MAC).
However, although it is certain that it is not a signature result generated by a third party, the same message can also be created by the signature recipient, so there is no effect against the center side's signature generator's escape.

<Additional explanation regarding security>
In communication transmission of multimedia service content, when the scheme is designated by “https:”, TLS is applied. It is assumed that the security algorithm in TLS is updated due to security issues. For this reason, when the security algorithm is updated, it is necessary to be able to update the security algorithm that operates in the browser by taking measures such as updating the receiver software.

  The receiver is required to have a mechanism that implements TLS1.2 and performs encrypted communication using 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 and reliably notify the user that the security communication cannot be used. In addition, when an error occurs in security communication, an implementation that does not execute communication is also possible.

  The root certificate used in security communication must be compliant with TLS1.2 and can be used in the browser for encrypted communication using the public key cryptosystem (PKCS).

  In addition, it is desirable that the receiver is equipped with a function for displaying the root certificate that can be used by the browser.

  It is assumed that it is necessary to operate a new root certificate due to the expiration date of the root certificate and the update of the security algorithm. Therefore, it is necessary to be able to add a new root certificate in the browser by means such as a receiver software update.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example 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 scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

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,
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 ... broadcast station 700 ... mobile terminal.

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 display control unit that displays the video signal output by the content processing unit on a full screen on a display screen of a display, and a reception method of a receiver including a communication unit,
Based on Transport Layer Security (TLS) via the communication unit, a security operation detection unit that detects a communication state of security communication,
The display control unit is further configured to display the video signal on a full screen on the display screen of the display when the communication state detected by the security operation detection unit is executing the security communication. , A display indicating that the security communication is being executed is displayed on a frame located around the display screen so as not to overlap the full screen display, and the communication state detected by the security operation detection unit is The reception method stops the execution of the security communication when an error occurs during the execution of the security communication.

Claims (1)

  A receiver including a video signal processing unit, a display, and a communication unit, the control unit detecting security communication based on Transport Layer Security (TLS) via the communication unit.

Images