JP2018042021A - Receiver, television apparatus, broadcast system, transmitter and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To limit display of a scene (flickering scene) where the brightness change of a video repeats rapidly in a short time, while reducing discomfort of a user when viewing a content.SOLUTION: A receiver includes an accompanying information processing unit for acquiring brightness information related to flickering of a high dynamic range video from the information accompanying to the high dynamic range video having brightness of wider range than a predetermined brightness range, an output processing section performing the processing related to output of the high dynamic range video, and an output control section for limiting output of a flickering scene from the output processing section, when a determination is made that a flickering scene of higher flickering degree than a predetermined flickering degree is contained in the high dynamic range video, based on the brightness information.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a receiving device, a television device, a broadcasting system, a transmitting device, and a program.

  As part of the advancement of television broadcasting, there is HDR (High Dynamic Range; also called high dynamic range, high dynamic range, wideband dynamic range) video. The HDR video is displayed with higher brightness than before, and the video quality is improved. On the other hand, it is known that when the user visually recognizes a scene where the luminance of the video is rapidly repeated in a short time (hereinafter referred to as a blinking scene), the physical condition of the user may be upset. Here, the maximum brightness of the HDR video is higher than the maximum brightness of a video having a normal brightness range (SDR: Standard Dynamic Range). Therefore, in a scene where the brightness of the video repeats abrupt changes in a short time, the brightness is high. The amount of change also increases. Therefore, the possibility that the user who visually recognizes the blinking scene will be sick is further increased.

  Patent Document 1 discloses a display that displays an image, a determination circuit that determines whether or not a person who views the image may cause a photosensitivity attack, and a risk that the photosensitivity attack may occur. An image display device having a display control circuit that controls display of an image when the circuit determines is disclosed. As contents of image display control, reducing brightness and contrast, making an image a still image, masking with a regular pattern, and the like are disclosed.

JP 2006-246138 A

  With the technique disclosed in Patent Document 1, even if the brightness and contrast of the blinking scene are reduced, the user may still be in a poor physical condition depending on the user's light perception ability and sensitivity. In addition, when the blinking scene is replaced with a still image or when it is masked with a regular pattern, there is a problem that the user feels uncomfortable when viewing content.

  The present invention has been made to solve the above-described problems, and one aspect of the present invention is based on the accompanying information accompanying the high dynamic range image having a luminance wider than the predetermined luminance range, and the high dynamic range image is obtained. An associated information processing unit that acquires luminance information related to flickering, an output processing unit that performs processing related to output of the high dynamic range video, and the high dynamic range video flashes more than a predetermined flashing level based on the luminance information When it is determined that a blinking scene having a high degree is included, the receiving apparatus includes: an output control unit that restricts the output of the blinking scene to the output processing unit.

  According to one aspect of the present invention, it is possible to limit the display of a scene (flashing scene) in which the luminance of a video repeats rapidly in a short time while reducing the user's uncomfortable feeling when viewing content.

It is a schematic block diagram which shows the structure of the broadcast system which concerns on 1st Embodiment. It is a schematic block diagram which shows the structure of the transmitter which concerns on 1st Embodiment. It is a schematic block diagram which shows the structure of the receiver which concerns on 1st Embodiment. It is a figure which shows an example of the data structure of MPT which concerns on 1st Embodiment. It is a figure which shows an example of the luminance information which concerns on 1st Embodiment. It is a figure which shows an example of the blink information which concerns on 1st Embodiment. It is a figure which shows an example of the brightness change information which concerns on 1st Embodiment. It is a figure which shows an example of the maximum luminance information which concerns on 1st Embodiment. It is a figure which shows an example of the process based on the luminance information which concerns on 1st Embodiment. It is a figure which shows the other example of the process based on the luminance information which concerns on 1st Embodiment. It is a figure which shows an example of a data structure of the accompanying information which concerns on the modification of 1st Embodiment. It is a figure which shows an example of the data area in which the brightness | luminance information which concerns on the modification of 1st Embodiment is stored. It is a schematic block diagram which shows the structure of the broadcast system which concerns on 2nd Embodiment. It is a schematic block diagram which shows the structure of the receiver which concerns on 2nd Embodiment. It is a figure which shows the example of the application control which concerns on 2nd Embodiment. It is a figure which shows one execution example of the application which concerns on 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
First, an overview of the broadcast system 1 according to the first embodiment of the present invention will be described.
FIG. 1 is a schematic block diagram showing a configuration of a broadcasting system 1 according to the present embodiment.
The broadcast system 1 includes a transmission device 10 and a reception device 20.
The transmission device 10 transmits program data representing the content of the broadcast program to the reception device via the broadcast transmission path BT. The content includes video and audio. In the following description, the content may mean a program or a video provided by the program. In addition, video may mean not only moving images but also audio. The broadcast transmission path BT is a transmission path for unilaterally and simultaneously transmitting program data to an unspecified number of receiving devices 20. The broadcast transmission path BT is a broadcast wave having a predetermined frequency band, for example. The broadcast transmission path BT may include a broadcast satellite BS that relays broadcast waves. A part of the broadcast transmission path BT may include a network, for example, a dedicated line or a VPN (Virtual Private Network).
The receiving device 20 receives program data transmitted via the broadcast transmission path BT. The receiving device 20 displays an image based on the received program data. The receiving device 20 is an electronic device such as a television device or a set top box that can receive program data and display a video related to the received program data on a display unit. Further, the receiving device 20 may be included in a television device. Although the number of transmitting apparatuses 10 and receiving apparatuses 20 shown in FIG. 1 is one each, there are generally a plurality. Further, a case where the broadcasting system 1 uses an MMT (MPEG Media Transport) system as a media transport system is taken as an example.

  The broadcast system 1 can broadcast programs having different luminance dynamic ranges. In other words, in the broadcast system 1, an HDR broadcast program and an SDR broadcast program are broadcast. The HDR broadcast program is a program including an HDR video whose luminance range is HDR. The SDR broadcast program is a program including an SDR video whose luminance range is SDR. Video data representing HDR video and video data representing SDR video are referred to as HDR video data and SDR video data, respectively.

(Brightness of image)
There are two types of video brightness, optical brightness and image brightness. Optical luminance is one of physical quantities representing the brightness of a light source. The optical luminance is used, for example, to represent the brightness of an image emitted from the display. In the present embodiment, as an example, referred to as HDR luminance range 0~10000cd / ^{m 2,} referred to the luminance range of 0~100cd / ^{m 2} and SDR. That is, HDR has a wider dynamic range of optical brightness than SDR. Note that the HDR and SDR luminance ranges are not limited to those described above, and may be arbitrarily determined according to, for example, a broadcasting system. Hereinafter, the dynamic range of the optical brightness may be simply referred to as the dynamic range. The image brightness means a signal level representing the brightness of an image or a relative value thereof. In the following description, optical luminance and image luminance may be referred to as luminance and luminance value, respectively.

The broadcast system 1 transmits program data including HDR video data or SDR video data. The HDR video data is, for example, SMPTE (Society of Motion Picture and Television Engineers) ST. 2084-2014, CTA (Consumer Technology Association) -861-F, and the like. In the following description, the data format of the HDR video data is referred to as the HDR format. In the HDR video data, the luminance within the HDR luminance range is associated with the luminance value. When the luminance value for each pixel is represented by 10 bits, for example, the luminance value of 64 to 940 corresponds to the luminance of 0 to 10000 cd / m ² .

The SDR video data is, for example, Rec. ITU-R BT. 709. In the following description, the data format of SDR video data is referred to as the SDR format. In the SDR video data, the luminance within the luminance range of SDR is associated with the luminance value. In SDR video data, the number of bits for representing the luminance value for each pixel is smaller than that in HDR video data. For example, when the luminance value for each pixel is represented by 8 bits, the luminance value of 16 to 240 corresponds to the luminance of 0 to 100 cd / m ² . The minimum value (for example, 64 when represented by 10 bits) and the maximum value (for example, 940 when represented by 10 bits) are also referred to as a reference black level and a reference white level.

(Configuration of transmitter)
Next, the configuration of the transmission device 10 according to the present embodiment will be described.
FIG. 2 is a schematic block diagram illustrating a configuration of the transmission device 10 according to the present embodiment.
The transmission device 10 transmits multiplexed data obtained by multiplexing program data and accompanying information accompanying the program data to the broadcast transmission path BT. The transmission apparatus 10 includes an accompanying information acquisition unit 110, a video encoding unit 120, an audio encoding unit 130, a multiplexing unit 140, an error correction encoding unit 150, a modulation unit 160, and a transmission unit 170.

  The accompanying information acquisition unit 110 acquires accompanying information accompanying program data. The accompanying information may include the type of program component. When the component is a video, the accompanying information can include the luminance range of the video and the luminance information regarding the blinking of the luminance. The accompanying information acquisition unit 110 may generate the luminance information by analyzing the video indicated by the video data input from another device, or may input the luminance information corresponding to the video data. When the MMT (MPEG Media Transport) method is used as a multiplexed transmission method of program data, for example, MMT-SI (Service Information) is used as a data format of accompanying information. The luminance information is described in MPT (MMT Package Table; MMT package table) which is a component of MMT-SI. When the video data is an HDR signal defined by CTA-861-F, the luminance information may be described in an information frame (InfoFrame). An example of the luminance information will be described later. The accompanying information acquisition unit 110 outputs the acquired accompanying information to the multiplexing unit 140.

  The video encoding unit 120 encodes video data input from another device using a predetermined encoding method (for example, ISO / IEC 23008-2 HEVC: High Efficiency Video Coding). The video encoding unit 120 generates video data including encoded data obtained by encoding. The video encoding unit 120 outputs the generated video data to the multiplexing unit 140.

  The audio encoding unit 130 encodes input audio data using a predetermined encoding method (for example, ISO / IEC 14496-3 MPEG-4 AUDIO). The audio encoding unit 130 outputs audio data including audio encoded data obtained by encoding to the multiplexing unit 140.

  The multiplexing unit 140 multiplexes the accompanying information input from the accompanying information acquisition unit 110, the video data input from the video encoding unit 120, and the audio data input from the audio encoding unit 130 to obtain a predetermined format ( For example, multiplexed data having MMT format) is generated. Multiplexer 140 outputs the generated multiplexed data to error correction encoder 150. Note that either or both of video data and audio data may be input to the multiplexing unit 140 from another device. If the format of the video data from another device is the same as the format of the video data from the video encoding unit 120, the video encoding unit 120 may be omitted. If the format of the audio data from the other device is the same as the format of the audio data from the audio encoding unit 130, the audio encoding unit 130 may be omitted.

  The error correction coding unit 150 performs error correction coding on the multiplexed data input from the multiplexing unit 140 using a predetermined error correction coding method, and performs a predetermined error correction code (for example, LDPC: low-density parity). -Check code). The error correction coding unit 150 outputs multiplexed data to which the error correction code obtained by error correction coding is added to the modulation unit 160.

The modulation unit 160 modulates the multiplexed data input from the error correction coding unit 150 using a predetermined modulation method (for example, 16-value amplitude phase modulation method (16APSK: 16-ary amplitude and phase-shift keying)). To do. Modulation section 160 outputs modulation data obtained by the modulation to transmission section 170.
The transmission unit 170 modulates the modulation data of the base frequency band input from the modulation unit 160 to generate a broadcast signal having a predetermined frequency band. The transmission unit 170 transmits the generated broadcast signal to the broadcast transmission path BT. The broadcast signal is transmitted as a broadcast wave. Therefore, a broadcast signal carrying multiplexed data obtained by multiplexing program data and accompanying information is transmitted via the broadcast transmission path BT. The transmission unit 170 includes, for example, a transmitter.

(Receiver configuration)
Next, the configuration of the receiving device 20 according to this embodiment will be described.
FIG. 3 is a schematic block diagram illustrating a configuration of the receiving device 20 according to the present embodiment.
The receiving device 20 includes a broadcast receiving unit 210, a demodulating unit 211, an error correcting unit 212, a separating unit 213, an input unit 215, a video decoding unit 221, a video processing unit 222, a display control unit 223, an audio decoding unit 231, and an audio processing unit. 232, an amplifier 233, a control unit 240, a storage unit 250, a display unit 22, and a loudspeaker unit 23. One or both of the display unit 22 and the loudspeaker unit 23 may be detachable from the main body of the receiving device 20. Note that each of the video processing unit 222 and the audio processing unit 232 is collectively referred to as an output processing unit.

  The broadcast receiving unit 210 receives a channel selection signal from a channel selection unit 241 (described later) of the control unit 240. The broadcast receiving unit 210 receives a broadcast signal transmitted through a channel indicated by the channel selection signal. The broadcast receiving unit 210 includes a tuner that receives broadcast waves. The tuner receives a broadcast wave in a frequency band corresponding to the channel specified by the channel selection signal. The broadcast receiving unit 210 down-converts the received broadcast signal to generate modulation data in the base frequency band, and outputs the generated modulation data to the demodulation unit 211.

  The demodulator 211 demodulates the modulation data input from the broadcast receiver 210 using a predetermined demodulation method. The predetermined modulation method is a demodulation method corresponding to the modulation method used by the modulation unit 160. Demodulation section 211 outputs multiplexed data to which the error correction code obtained by decoding is added to error correction section 212.

  The error correction unit 212 separates the error correction code from the multiplexed data input from the demodulation unit 211. The error correction unit 212 performs error correction on the multiplexed data using the separated error correction code. The error correction unit 212 outputs multiplexed data obtained by performing error correction to the separation unit 213.

  The separation unit 213 separates program data and accompanying information from the multiplexed data input from the error correction unit 212. The separation unit 213 separates video data and audio data from the separated program data. The separation unit 213 outputs the separated video data to the video decoding unit 221, and outputs the separated audio data to the audio decoding unit 231. The separation unit 213 outputs the separated accompanying information to the accompanying information processing unit 242 of the control unit 240.

  The input unit 215 receives an operation signal generated by a user operation. The input unit 215 includes, for example, an infrared interface that receives an operation signal from a remote controller (control device) RC using infrared rays. For example, the operation signal specifies information such as power on / off, a channel for receiving a broadcast wave, luminance, and luminance range. The input unit 215 outputs an operation signal to the control unit 240. Note that the input unit 215 may include a physical member for receiving a user operation, for example, various buttons and knobs, and may generate an operation signal corresponding to the operation. The input unit 215 outputs the input operation signal to the control unit 240.

  Video data is input from the separation unit 213 to the video decoding unit 221. The video decoding unit 221 decodes the input video data using a predetermined video decoding method. The predetermined video decoding method is a decoding method corresponding to the encoding method used by the video encoding unit 120. The video decoding unit 221 outputs the decoded video data to the video processing unit 222.

The video processing unit 222 performs predetermined processing on the video data input from the video decoding unit 221. For example, when an instruction to limit the output of the blinking scene is input as control information from the output control unit 243, the video processing unit 222 also includes information regarding the start time and end time of the blinking scene that is also input as control information, Limit the output of the blinking scene based on information about the duration of the scene. Specifically, the video processing unit 222 acquires another video from the storage unit 250 and replaces the blinking scene with another video. Alternatively, the video processing unit 222 performs processing to display a video excluding the blinking scene. That is, the video processing unit 222 displays the video by skipping the blinking scene. Note that the blinking scene is an image of a scene in which the blinking degree of luminance in the image is higher than a predetermined blinking degree.
For example, when the notification screen data is input as control information from the output control unit 243, the video processing unit 222 superimposes the notification screen indicated by the notification screen data on the video indicated by the video data. The notification screen is a screen indicating the presence of a blinking scene having a higher blinking degree than a predetermined blinking degree in the HDR video provided in the program.
For example, when the input video data is HDR video data, the video processing unit 222 adjusts the luminance of the HDR video indicated by the HDR video data to a luminance within a narrower luminance range. The narrow luminance range is, for example, within a predetermined luminance range of the SDR video. The video processing unit 222 adjusts the brightness in response to the input of the operation signal from the input unit 215, and may not be performed when the operation signal is not input. Also, the video processing unit 222 can determine whether the luminance range of the video is HDR or SDR based on the luminance information input from the accompanying information processing unit 242, for example.
The video processing unit 222 outputs video data indicating the video obtained by the processing to the display control unit 223. When the process is not performed, the video processing unit 222 outputs the video data input from the video decoding unit 221 to the display control unit 223. An example of processing based on luminance information will be described later.

  The display control unit 223 controls the luminance of the video indicated by the video data input from the video processing unit 222 based on the control parameter indicated by the operation signal input from the input unit 215 via the control unit 240. The control parameter includes, for example, a gain and an offset value. The gain and offset values are parameters for adjusting the contrast and brightness of the video by multiplying and adding to the luminance value, respectively. The display control unit 223 outputs to the display unit 22 video data indicating a display video whose luminance is controlled.

  The display unit 22 displays a video based on the video data input from the display control unit 223. The display unit 22 is, for example, a liquid crystal display (LCD: Liquid Crystal Display), an organic EL (Electroluminescence) display, or the like. As the display unit 22, a display capable of displaying the luminance within the luminance range of the HDR video is used.

  Audio data is input from the separation unit 213 to the audio decoding unit 231. The voice decoding unit 231 decodes the input voice data using a predetermined voice decoding method. The predetermined speech decoding method is a decoding method corresponding to the encoding method used by the speech encoding unit 130. The audio decoding unit 231 outputs the decoded audio data to the audio processing unit 232.

The voice processing unit 232 performs predetermined processing on the voice data input from the voice decoding unit 231. For example, when an instruction to limit the output of a blinking scene is input as control information from the output control unit 243, the sound processing unit 232 also includes information regarding the start time and end time of the blinking scene that is also input as control information, Limit the output of the blinking scene based on information about the duration of the scene. Specifically, the sound processing unit 232 acquires another sound from the storage unit 250 and replaces the sound corresponding to the blinking scene with another sound. Alternatively, the audio processing unit 232 performs processing to output audio corresponding to the video excluding the blinking scene. That is, the audio processing unit 232 skips the blinking scene and outputs audio.
In addition, the voice processing unit 232 mixes the voice indicated by the voice data input from the control unit 240 with the voice indicated by the voice data input from the voice decoding unit 231, for example. The audio processing unit 232 outputs audio data indicating the audio obtained by the processing to the amplifier 233.

  The amplifier 233 controls the sound volume indicated by the sound data input from the sound processing unit 232 based on the control parameter indicated by the operation signal input from the input unit 215 via the control unit 240. The control parameter includes, for example, a gain value. The gain value is a parameter for adjusting the volume by multiplying the audio signal value. The amplifier 233 outputs sound data indicating the sound for reproduction whose volume is controlled to the loudspeaker 23.

  The loudspeaker 23 reproduces sound based on the sound data input from the amplifier 233. The loudspeaker 23 includes, for example, a speaker.

The control unit 240 performs various controls related to the operation of the receiving device 20. The control unit 240 includes a channel selection unit 241, an accompanying information processing unit 242, and an output control unit 243.
The channel selection unit 241 identifies a channel that receives a broadcast signal from the operation signal input from the input unit 215. The channel selection unit 241 generates a channel selection signal indicating the identified channel, and outputs the generated channel selection signal to the broadcast reception unit 210.

  The accompanying information processing unit 242 performs various controls related to the presentation of the program based on the accompanying information input from the separating unit 213. The accompanying information processing unit 242 extracts luminance information of the video that is a component of the program from the accompanying information. The accompanying information processing unit 242 outputs the extracted luminance information to the video processing unit 222 and the output control unit 243.

  Based on the luminance information input from the accompanying information processing unit 242, the output control unit 243 includes a flashing scene in which the broadcast video is an HDR video and the video has a flashing level higher than a predetermined flashing level. It is determined whether or not. For example, when the value of the number of blinking scenes included in the luminance information is equal to or greater than a predetermined value (for example, 1), the output control unit 243 determines that a blinking scene is included in the broadcast video. When the output control unit 243 determines that a blinking scene is included in the HDR video, the output control unit 243 reads the blinking scene output restriction method stored in advance in the storage unit 250, and outputs the brightness restriction information and the output restriction instruction based on the acquired output restriction method. Are output to the video processing unit 222 and the audio processing unit 232 as control information.

  The storage unit 250 stores various data such as setting data used by the control unit 240, data acquired by the control unit 240, video data used by the video processing unit 222, and audio data used by the audio processing unit 232. The storage unit 250 includes various storage media such as a RAM (Random Access Memory) and a ROM (Read-only Memory).

(MPT)
When the program data is transmitted using the MMT system as the transmission / multiplexing system, the luminance information is described in the MPT descriptor area as an example.
FIG. 4 is a diagram illustrating an example of the data structure of the MPT according to the present embodiment.
In the example shown in FIG. 4, MPT (MMT_Package_Table ()) stores configuration information indicating the configuration of program data. The MPT includes a version (version), an MPT descriptor area (MPT_descriptors_byte), and an asset type (asset_type) for each asset. The MPT descriptor area is an MPT descriptor. In the MPT descriptor, luminance information is described as a descriptor relating to program data transmitted at that time. Therefore, the accompanying information processing unit 242 of the receiving device 20 extracts luminance information from the MPT included in the accompanying information. The luminance information is set for each program, for example. The version indicates an MPT version number. Each time the information stored in the MPT is updated, the version number is updated in ascending order. When the luminance information is updated in accordance with the switching of programs as time passes, a value obtained by adding a predetermined increment value (for example, 1) to the version number at that time is updated as a new version number. . The version number may be updated at a timing other than program switching.

  The asset type (asset_type) is information indicating the type of asset. An asset means a component of a program. For example, an asset in which “hvc1” is described as the asset type indicates video, and an asset in which “mp4a” is described as the asset type indicates audio. Note that the luminance information may be described in an asset descriptor area (asset_descriptors_byte) related to the asset of the broadcast video. Thereby, the accompanying information processing unit 242 can immediately determine a video to be processed using the luminance information. Note that an HDR flag indicating whether the video is an HDR video or an SDR video may be included as part of the luminance information. Thereby, the accompanying information processing unit 242 can determine whether or not the video is an HDR video.

(Luminance information)
Next, an example of luminance information included in the accompanying information will be described. FIG. 5 is a diagram illustrating an example of luminance information according to the present embodiment. In the example illustrated in FIG. 5, the luminance information includes the number of blinking scenes, the blinking start time, the blinking end time, and the blinking duration.
The number of blinking scenes is the number of blinking scenes included in the video content corresponding to the current version number. For example, if the value of the number of blinking scenes is 3, it indicates that there are three blinking scenes in the video content.
The blinking start time is information indicating the time when the blinking scene starts. In the present embodiment, it is represented by the number of frames after the version number is updated. For example, if the blinking start time is 10,000, it indicates that the blinking scene starts from the 10,000th frame after the version information is updated. In HDR, the frame rate is typically 60 fps (frame per second), so one frame is 1 (second) / 60 (frame) = 0.0166... (Second). Therefore, the blinking start time in this case is about 166.66 (seconds) after the version update.
The blinking end time is information indicating the time when the blinking scene ends. In the present embodiment, it is represented by the number of frames after the version information is updated, like the blinking start time.
The blinking duration is information relating to the duration of the blinking scene. In the present embodiment, it is represented by the number of frames in which the blinking time continues.
The blinking start time, the blinking end time, and the blinking continuation time are repeatedly stored for the number of blinking scenes. For example, if the number of flickering scenes is n, flicker start time 1, flicker end time 1, flicker duration 1..., Flicker start time n, flicker end time n, flicker duration n and (n × 3 ) Pieces of information are repeatedly stored in the descriptor area of the MPT.

Note that not all information on the blinking start time, the blinking end time, and the blinking continuation time exists in the descriptor area of the MPT. If there is at least two pieces of information among the blink start time, the blink end time, and the blink duration time, the output control unit 243 can calculate the remaining information by calculation.
The unit of the blink start time, the blink end time, and the blink duration time may be other than the number of frames. For example, it may be information consisting of hours, minutes, and seconds representing elapsed time since the version information was updated.
In this embodiment, a case where 24 bits are assigned to each of the number of blinking scenes, the blinking start time, the blinking end time, and the blinking continuation time is taken as an example, but the present invention is not limited to this. The number of allocated bits may be other number of bits such as 8 bits and 16 bits.

  FIG. 6 is a diagram illustrating an example of flicker information as another type of luminance information. In the example shown in FIG. 6, the blinking information includes a flash scene flag (flash_scene) and a flash scene level (flash_scene level). The flash scene flag indicates a value of 1 when the video provided in the program has a flash scene, and indicates a value of 0 when the video does not have a flash scene. The flash scene means a blinking section that is a section (scene) of a video whose blinking degree is higher than a predetermined blinking degree. The flash scene level is a value obtained by discretizing an index value indicating the degree of the flash scene, that is, the blinking level into a predetermined number of steps. In the example shown in FIG. 6, the flash scene level is represented by five levels of integer values from 1 to 5. The larger the flash scene level value, the higher the blinking level. If the value of the flash scene flag is 0, the flash scene level may not be set. The accompanying information acquisition unit 110 of the transmission device 10 calculates a blinking index value for each unit time for the video indicated by the input video data. The blinking index value is, for example, any one of a maximum brightness change count, a maximum brightness change amount, an average brightness change count, and an average brightness change amount, or a plurality or all of the values described later. The sum of multiplication values obtained by multiplying a predetermined weight coefficient may be used.

  When generating luminance information, the incidental information acquisition unit 110 determines a section where the index value calculated every unit time (for example, 3 to 10 seconds) is larger than a predetermined index value as a flash scene, and the other sections Is determined as a non-flash scene. The accompanying information acquisition unit 110 sets the value of the flash scene flag to 1 when there is a section determined as a flash scene for the video provided in the program. The accompanying information acquisition unit 110 determines the value of the flash scene flag as 0 when there is no section determined as a flash scene for the video provided in the program. Further, the accompanying information acquisition unit 110 discretizes the index value in the section determined as the flash scene into a predetermined number of steps, and calculates the flash scene level value.

  FIG. 7 is a diagram illustrating an example of luminance change information as another type of luminance information. In the example illustrated in FIG. 6, the luminance change information includes the maximum luminance change count, the maximum luminance change amount, the average luminance change count, and the average luminance change amount. The accompanying information acquisition unit 110 of the transmission device 10 calculates the maximum brightness change count, the maximum brightness change amount, the average brightness change count, and the average brightness change amount as index values per unit time for the video indicated by the input video data. The brightness change information is generated using the calculated index value.

  The maximum number of changes in luminance shown in the second row of FIG. 7 is the maximum value in the program of the maximum number of changes in luminance per unit time of video provided in the program. The maximum luminance change count per unit time is the number of times that the inter-frame change amount of the maximum luminance, which is a representative value of the luminance for each frame within the unit time, is equal to or greater than a predetermined change amount. The interframe change amount is an absolute value of a difference between adjacent frames. As the predetermined amount of change, for example, a threshold value of the amount of change in luminance that may affect the physical condition of the viewer when the change in luminance is repeated may be used. More specifically, the predetermined change amount may be set based on a predetermined ratio with respect to the luminance range of the HDR video signal. The luminance range is represented by a maximum luminance value and a minimum luminance value. The ratio to the luminance range is, for example, about 20% to 30%. Since the change in the maximum luminance between frames directly represents the blinking of the video, the accompanying information acquisition unit 110 counts the number of blinks in which the change in the maximum luminance exceeds a predetermined change amount as the maximum number of luminance changes. When the predetermined ratio is 20% and the luminance value is represented by 10 bits, the predetermined change amount is (maximum luminance value (for example, 940) −minimum luminance value (for example, 64)) · 20, that is, 175. In this case, the accompanying information acquisition unit 110 counts the number of times that the change amount of the maximum luminance between frames is larger than 175 in the video provided by the program as the maximum luminance change number.

The maximum luminance change amount shown in the third row of FIG. 7 is the maximum value in the program of the maximum luminance change amount per unit time of the video provided in the program. The maximum luminance change amount per unit time is the maximum value among the inter-frame change amounts of the maximum luminance, which is a representative value of the luminance for each frame within the unit time.
The average luminance change amount shown in the fourth row of FIG. 7 is the maximum value in the program of the average luminance change count per unit time of the video provided in the program. The average luminance change count per unit time is the number of times that the inter-frame change amount of the average luminance, which is a representative value of the luminance for each frame within the unit time, is equal to or greater than a predetermined change amount. As described above, the predetermined change amount may be set based on a predetermined ratio with respect to the luminance range of the HDR video signal. However, since the average luminance is the average of the luminance of the entire frame, the time change is more gradual than the maximum luminance. Therefore, a value smaller than the predetermined change amount used for counting the maximum luminance change number is set as the predetermined change amount used for counting the average luminance change number. The predetermined change amount used for counting the average luminance change count may be, for example, about ¼ of the predetermined change amount used for counting the maximum luminance change count. In that case, the ratio to the luminance range is 5.0 to 7.5%.
The average luminance change amount shown in the fifth line of FIG. 7 is the maximum value in the program of the average luminance change amount per unit time of the video provided in the program. The average luminance change amount per unit time is the maximum value among the inter-frame change amounts of the average luminance, which is a representative value of the luminance for each frame within the unit time.
In the present embodiment, the brightness change information may not include all index values of the maximum brightness change count, the maximum brightness change amount, the average brightness change count, and the average brightness change amount, and at least the index values thereof. One of them may be included. Further, an average value may be used as a representative value in the content instead of the maximum value.

  FIG. 8 is a diagram illustrating an example of representative luminance information as another type of luminance information. The example shown in FIG. 7 includes a maximum content luminance level (MaxCLL: Maximum Content Light Level) and a maximum frame average luminance level (MaxFALL: Maximum Frame-Average Light Level) defined by CTA-861-F.

  The accompanying information acquisition unit 110 of the transmission device 10 acquires the maximum content luminance level and the maximum frame average luminance level as index values for a series of scenes of the video indicated by the input video data, and uses the acquired index values to determine the luminance. Generate change information. The series of scenes may be the entire program or each section that is a part of the program. The section may be a section divided every predetermined unit time, or may be a section arbitrarily set by the producer.

The maximum content luminance level is the maximum value of the luminance level of the video in a series of scenes. The maximum frame average luminance level is the maximum value of the frame average luminance level of a series of scenes. The frame average luminance level is an average value of luminance levels for each frame. The luminance level may be a value expressed as physical luminance, or may be a luminance value converted from the physical luminance using a predetermined OETF (Opto-electric Transfer Function, photoelectric conversion function).
In the present embodiment, the representative luminance information may not include the index values of both the maximum content luminance level and the maximum frame average luminance level, and may include at least one of those index values. That's fine. Further, instead of or together with the maximum content luminance level or the maximum frame average luminance level, an average content luminance level or an average frame average luminance level may be included.

(Processing example 1)
Next, an example of processing performed by the video processing unit 222, the audio processing unit 232, and the output control unit 243 will be described using an example in which the blinking scene is replaced with another video. FIG. 9 is a diagram illustrating an example of processing based on luminance information (processing example 1) according to the present embodiment.
FIG. 9A is a diagram illustrating an example of luminance information according to the present embodiment. In this example, the luminance information includes the number of blinking scenes, the blinking start time, the blinking end time, and the blinking duration, and the values are 1, 10000, 15000, and 5000, respectively. That is, there is one blinking scene in the current video stream, the start time is the 10,000th frame of the video stream, the end time is the 15000th frame, and the duration of the blinking scene is 5000 frames. Is shown.

FIG. 9B is a diagram illustrating an operation when the blinking scene is replaced with another video in the present embodiment. In this figure, the horizontal axis represents time, and the upper row shows the contents of the video stream at the current version number of the MMT. In the processing example 1, the video stream is transmitted and output to the receiving device 20 as needed, such as television broadcasting or streaming relay. Corresponding to the content of the luminance information in FIG. 9A, the first to 9999 frames of the video stream are the normal scene 1 that does not correspond to the blinking scene. Further, the blinking scene is from 10,000 frames to 15000 frames, and the normal scene 2 is after 15001 frames.
The middle part of FIG. 9B shows the video displayed in this example, and the lower part shows the sound to be output. The output control unit 243 determines the presence / absence of a blinking scene in the video stream based on the number of blinking scenes, the blinking start time, the blinking end time, and the blinking duration information input from the associated information processing unit 242. Identify the number and location of Specifically, the output control unit 243 determines that a blinking scene exists in the current video stream when the value of the number of blinking scenes is equal to or greater than a predetermined number. In the present embodiment, the predetermined number is 1, and the value of the number of blinking scenes is 1 or more, so that it is determined that the blinking scene exists in the current video stream. Further, since the value of the number of blinking scenes is 1, the output control unit 243 determines that the number of blinking scenes included in the video stream is 1. Further, since the value of the blinking start time 1 corresponding to one blinking scene is 10000 and the value of the blinking duration 1 is 5000, the output control unit 243 obtains 10000 and 5000 from 10,000 frames. It is determined that up to 15000 frames are flickering scenes. Alternatively, the output control unit 243 may identify the location of the blinking scene from the blinking start time and the blinking end time, or may identify the location of the blinking scene from the blinking continuation time and the blinking end time.
Note that information other than the number of blinking scenes may be used to determine the presence of the blinking scene. For example, the determination may be made using the value of the flash scene flag included in the luminance information. Further, the determination may be made by combining values included in other luminance information.

  The output control unit 243 generates control information based on the location of the specified blinking scene. The control information includes the presence / absence of a blinking scene, the number of blinking scenes, the start time, end time, and duration of each blinking scene, and an output restriction instruction for each blinking scene. The output restriction instruction for each blinking scene includes the presence / absence of restriction on the output, restriction contents, and alternative information. The presence / absence of restriction on output is information on whether or not to restrict output for the blinking scene. The output restriction contents are specific restriction contents when the output of the blinking scene is restricted, for example, video replacement, skipping, and the like. The substitute information is information indicating a substitute video when the video is replaced. The content of the output restriction instruction for each blinking scene is held in the storage unit 250 as a predetermined setting or a setting changed by the user, and the output control unit 243 outputs the output for each blinking scene from the storage unit 250. Get the contents of the restriction instruction. In the present embodiment, the content of the output restriction for each blinking scene is displayed on the storage unit 250 by replacing the scene immediately before the start of the blinking scene with the blinking scene for the same time as the blinking scene duration. Settings are stored. Similarly, for audio, a setting for outputting the audio corresponding to the scene immediately before the blinking scene is stored for the same duration as the duration of the blinking scene. A specific example of the blinking scene replacement will be described later. The output control unit 243 acquires the setting from the storage unit 250, generates control information together with the luminance information acquired from the accompanying information processing unit 242, and outputs the control information to the video processing unit 222 and the audio processing unit 232.

  The video processing unit 222 limits the video display of the blinking scene based on the control information input from the output control unit 243. In the present embodiment, the control information includes an instruction to display 5000 frames from 10,000 frames to 15000 frames that are flickering scenes by replacing them with 5000 frames immediately before the start of the flickering scene, that is, 4999 frames to 9999 frames. Yes. Based on the control information, the video processing unit 222 replaces the video from the 4999th frame to the 9999th frame (dotted shaded portion) of the video stream with the video from the 10000th frame to 15000th frame (shaded shaded portion) and re-displays. Note that the video processing unit 222 may acquire the replacement video from the storage unit 250 or the like, or may use a video that the video processing unit 222 buffers and holds.

  The sound processing unit 232 restricts sound output for the blinking scene based on the control information input from the output control unit 243. In the present embodiment, the audio processing unit 232 replaces the audio from the 4999th frame to the 9999th frame of the audio stream with the audio of 10,000 frames to 15000 frames and re-displays, as in the example of the processing of the video processing unit 222 described above. . The voice processing unit 232 may acquire the voice to be replaced from the storage unit 250 or the like, or may use the voice buffered and held by the voice processing unit 232.

  In this way, by switching the blinking scene to the video and audio of the immediately preceding scene, even when the blinking scene occurs, it is possible to limit the output of the blinking scene while reducing the user's uncomfortable feeling. Further, compared with the case of replacing with a still image or the case where only the video is replaced and the sound is output as it is, the possibility that the user misunderstands that it is a failure or the like, and the uncomfortable feeling due to the shift between the video and the sound can be reduced. Further, in order to determine the presence and location of the blinking scene based on the luminance information included in the accompanying information accompanying the HDR video, the receiving device 20 itself determines the presence and location of the blinking scene based on the received video. Compared to the above, the processing load is reduced.

In the present embodiment, the blinking scene is replaced with the previous video, but it may be replaced with another video such as another video in the same video stream. For example, video and audio prepared in advance may be output according to the content genre. For example, in the case of a movie, an image at the beginning of the chapter may be displayed, and a caution indicating that the display of the blinking scene is suppressed may be displayed. In the case of sports, you may display the image | video of the place relevant to the said sports, such as a ground and a stadium. In the case of a variety program, an opening video of the program or a video of the performer may be displayed. Thus, by displaying the video according to the genre of the content, it is possible to reduce the user's uncomfortable feeling accompanying the replacement of the blinking scene.
Also, the replacement video and audio may not correspond to time. For example, for the video, the video immediately before the blinking scene may be displayed, and for the audio, the voice of the blinking scene or other scenes may be output. The sound may be a regular sound such as a warning sound or music such as a theme song, not a sound of another scene.

(Processing example 2)
Next, an example (processing example 2) of processing performed by the video processing unit 222, the audio processing unit 232, and the output control unit 243 will be described using a case where a blinking scene is skipped as an example. The description overlapping with the description in the processing example 1 is omitted, and the difference from the processing example 1 will be mainly described.
FIG. 10 is a diagram illustrating an operation when a blinking scene is skipped in the present embodiment.
The upper part of FIG. 10 shows video and audio corresponding to the original video stream. In Processing Example 2, the original video stream is recorded on a recording medium such as a hard disk or a DVD, and is content that can be played on demand by a user operation.
The lower part of FIG. 10 shows a video stream in which the blinking scene is skipped, and display video and output audio actually output corresponding to the video stream.
In this example, it is assumed that the luminance information has the same contents as in FIG. That is, the luminance information includes the number of blinking scenes, the blinking start time, the blinking end time, and the blinking duration, and the values are 1, 10000, 15000, and 5000, respectively.

  Based on the luminance information input from the accompanying information processing unit 242, the output control unit 243 recognizes that 10,000 frames to 15000 frames of the video stream are blinking scenes. The output control unit 243 acquires setting information about the blinking scene restriction stored in advance in the storage unit 250 from the storage unit 250. The setting information may be predetermined setting information or may be setting information changed by the user. In this example, the setting information stores a setting for skipping the blinking scene. Therefore, the output control unit 243 generates control information including an instruction to skip the blinking scene as an output restriction instruction in addition to the presence / absence of the blinking scene, the number of blinking scenes, the start time and the end time of each blinking scene. The output control unit 243 outputs the generated control information to the video processing unit 222 and the audio processing unit 232.

The video processing unit 222 limits the video display of the blinking scene based on the control information input from the output control unit 243. In this example, the control information includes an instruction to skip from 10000 frames to 15000 frames, which are flickering scenes, that is, to continue displaying video except for the frames. Therefore, the video processing unit 222 deletes 15000 frames from 10000 frames of the video stream that is the blinking scene. Then, the display control unit 223 is instructed to display the video after the 15001 frame by raising the deleted frame. As a result, the video of the blinking scene is deleted (skipped), and the moving image 2 is displayed after the moving image 1.
Further, when skipping the blinking scene, the video processing unit 222 may display a message such as “skip for x seconds”. In addition, the video processing unit 222, when the information of the blinking scene can be acquired in advance by the accompanying information stipulated in the MMT system, the AVI-Info information in the HDMI (registered trademark) transmission, or the like, Messages such as “cut for x seconds” and “cut for x seconds after y minutes” may be displayed at the start of playback or during playback.

  The sound processing unit 232 restricts sound output for the blinking scene based on the control information input from the output control unit 243. In this example, similarly to the video processing unit 222, the audio processing unit 232 deletes 15000 frames from 10000 frames of the audio stream that is a blinking scene. Then, the sound processing unit 232 raises the sound after the 15001th frame and outputs it to the amplifier 233. As a result, the sound of the blinking scene is deleted (skipped), and the sound 2 is displayed after the sound 1.

  In this way, by skipping and outputting the video and audio of the blinking scene, the user can continuously view the scene other than the blinking scene even when the blinking scene occurs. Viewing time and stress can be reduced.

(Modification)
Next, a modification of this embodiment will be described. In this modification, the HDR video data indicating the broadcast HDR video may be configured as an HDR signal defined by CTA-861-F. The accompanying information related to the video is described in InfoFrame as a predetermined data area in the HDR signal. FIG. 11 is a diagram illustrating an example of an InfoFrame data configuration according to the present modification. The InfoFrame includes a type code (InfoFrame Type Code) and a plurality of data areas (Data Bytes). The type code is a code indicating the type of accompanying information. The type code of InfoFrame in which luminance information related to the luminance of the video is described is 0x07. The data area is a data area in which accompanying information is described. In the present embodiment, the number of blinking scenes, the blinking start time, the blinking end time, and the blinking continuation time described in InfoFrame may be used as the luminance information.

FIG. 12 is a diagram illustrating an example of a data area in which luminance information according to the present embodiment is stored.
In the example illustrated in FIG. 12, information described in each of Data Bytes 3 to 36 is classified into seven groups (Groups) for each type of information. The number of blinking scenes, the blinking start time, the blinking end time, and the blinking duration are stored in Data Bytes 27, 28, 29, and 30, respectively, and are classified into group 7.

Further, the above-described maximum content luminance level and maximum frame average luminance level may be described in InfoFrame. In the example shown in FIG. 12, the maximum content luminance level and the maximum frame average luminance level are stored in Data Bytes 23 and 25, respectively, and are classified into groups 5 and 6.
Further, the flash scene flag and the flash scene level described above may be described in InfoFrame. In the example shown in FIG. 12, the flash scene and the flash scene level are stored in Data Bytes 31 and 32, respectively, and are classified into group 2.
Further, the above-described maximum brightness change count, maximum brightness change amount, average brightness change count, and average brightness change amount may be described in InfoFrame. In the example shown in FIG. 12, the maximum brightness change count, the maximum brightness change amount, the average brightness change count, and the average brightness change amount are stored in Data Bytes 33, 34, 35, and 36, respectively, and are classified into group 4.

  Note that the luminance information may be stored in a descriptor area provided for each event identification of MH-EIT instead of MPT. The event identification is identification information for identifying individual programs. Therefore, the accompanying information processing unit 242 of the receiving device 20 can immediately specify the luminance information applied to each broadcast program.

As described above, the reception apparatus 20 according to the present embodiment includes the accompanying information processing unit that acquires luminance information related to blinking of the HDR video from the accompanying information accompanying the HDR video having a luminance wider than the predetermined luminance range. 242. In addition, the reception device 20 includes output processing units 222 and 232 that perform processing related to output of HDR video. Further, when the receiving device 20 determines that the HDR video includes a blinking scene having a blinking level higher than a predetermined blinking level, the reception apparatus 20 restricts the output of the blinking scene to the output processing units 222 and 232. The output control unit 243 is provided.
With this configuration, it is possible to limit display of scenes (flashing scenes) in which the luminance of the video is rapidly repeated in a short time while reducing the user's uncomfortable feeling when viewing the content.

The luminance information includes the number of blinking scenes included in the HDR video. The output control unit 243 determines that a blinking scene is included when the number of blinking scenes is equal to or greater than a predetermined number.
With this configuration, it is possible to accurately determine whether a blinking scene exists in the HDR video. In addition, the processing load on the receiving device 20 can be reduced compared to the case where the receiving device 20 determines the presence of a blinking scene based on the received video.

Further, the luminance information includes at least two pieces of information among information regarding the start time of the blinking scene, information regarding the duration of the blinking scene, and information regarding the end time of the blinking scene. Further, the output processing units 222 and 232 specify the blinking scene based on at least two pieces of information.
With this configuration, it is possible to accurately grasp the location where the blinking scene exists. In addition, the processing load on the receiving device 20 can be reduced as compared with the case where the receiving device 20 specifies the location of the blinking scene based on the received video.

Further, the output control unit 243 causes the output processing units 222 and 232 to output the blinking scene by replacing it with another video.
With this configuration, it is possible to limit display of scenes (flashing scenes) in which the luminance of the video is rapidly repeated in a short time while reducing the user's uncomfortable feeling when viewing the content.

Further, the output control unit 243 causes the output processing units 222 and 232 to output an image excluding the blinking scene.
With this configuration, it is possible to limit display of scenes (flashing scenes) in which the luminance of the video is rapidly repeated in a short time while reducing the user's uncomfortable feeling when viewing the content.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. About the same structure as 1st Embodiment, the same code | symbol is attached | subjected and the description is used.
FIG. 13 is a schematic block diagram showing a configuration of the broadcast system 1 according to the present embodiment. In the example illustrated in FIG. 13, the broadcasting system 1 is configured as a broadcasting / communication cooperation system including the transmitting device 10, the receiving device 20, and the server device 30. The server device 30 is, for example, a server device managed by a broadcaster or a program provider.

  The communication transmission path CT is a transmission path for bidirectionally transmitting various data between the server device 30 and the receiving device 20. The communication transmission line CT includes, for example, a wide area communication network such as the Internet or a public wireless communication network. The communication transmission line CT may include a local area network (LAN) or a dedicated access network in part. Note that transmission (or transmission, reception) of various data via the communication transmission path CT may be referred to as “transmission (or transmission, reception) by communication”.

  When receiving an application request signal from the receiving device 20, the server device 30 transmits an application program (hereinafter referred to as an application) to the receiving device 20 as a response. The application request signal is a signal that indicates a request for the target application. The application is described in a predetermined description language (for example, HTML5), and commands for realizing various functions related to program presentation are described. Examples of application functions will be described later.

  The accompanying information acquisition unit 110 (see FIG. 2) of the transmission apparatus 10 according to the present embodiment further acquires application control information, describes information indicating the presence of the acquired application control information in the MPT, and includes the MPT. Generate service information. The application control information includes information for controlling execution such as URL (Uniform Resource Locator) of the server device 30 and application start / stop as acquisition destination information of the application. The control information is represented, for example, as an application information table (MH-AIT: Application Information Table) having a predetermined data format. In the present embodiment, the application may include an acquisition command for luminance information of the video of the program. The acquisition command includes, for example, the address of a device in which luminance information is arranged as acquisition destination information and the file name of a data file in which the luminance information is stored.

  The receiving device 20 acquires the luminance information by performing the process instructed by the command described in the application. The receiving apparatus 20 performs the above-described video output restriction using the acquired luminance information. In addition, the reception device 20 performs the process of adjusting the luminance of the video described above using the acquired luminance information. Further, when determining that the video broadcast based on the acquired luminance information is an HDR video and that the video includes a blinking scene, the reception device 20 outputs the control information described above. If the application includes a luminance information acquisition command or the application includes luminance information, the luminance information may be omitted from the MPT, MH-EIT, or HDR signal.

  The application control information and the application also include accompanying information related to the provision of the program, but are processed as an information unit separate from the MMT-SI. The multiplexing unit 140 further multiplexes the application control information to generate multiplexed data. The separation unit 213 (see FIG. 14) of the reception device 20 further separates the application control information from the multiplexed data input from the demodulation unit 211, and outputs the separated application control information to the accompanying information processing unit 242.

(Receiver)
Next, the configuration of the receiving device 20 according to this embodiment will be described. FIG. 14 is a schematic block diagram illustrating a configuration of the receiving device 20 according to the present embodiment.
The receiving device 20 according to this embodiment includes a communication unit 260.
The communication unit 260 outputs various reception data received from the server device 30 connected via the communication transmission path CT to the control unit 240, and transmits various transmission data input from the control unit 240 to the server device 30. To do. The communication unit 260 is, for example, a communication interface.

The accompanying information processing unit 242 further includes an application control unit 244 and an application execution unit 245.
The application control unit 244 acquires an application based on the application control information input from the separation unit 213, and controls processing instructed by a command described in the acquired application. Note that performing the processing instructed by an instruction described in the application is called “execution of application” or “execution of application”.

  The application control unit 244 extracts application acquisition destination information from the application control information, and transmits an application request signal to the server device 30 indicated by the extracted acquisition destination information. The application control unit 244 receives an application from the server device 30 as a response, and outputs the received application to the application execution unit 245. The application control unit 244 controls the application execution unit 245 to execute the application based on various commands included in the application control information.

  The application execution unit 245 executes the application input from the application control unit 244. The application execution unit 245 causes other functional units to execute processing related to the presentation of the video indicated by the program data based on a command described in the application. For example, the application execution unit 245 transmits a luminance information request signal to the device instructed by the acquisition command described in the application via the communication unit 260. The application execution unit 245 receives luminance information from the device via the communication unit 260 as a response to the luminance information request signal. The application execution unit 245 causes the output control unit 243 to restrict the output of the blinking scene to the video processing unit 222 and the audio processing unit 232 based on the acquired luminance information. Further, the application execution unit 245 may cause the video processing unit 222 to execute the above-described luminance adjustment processing based on the acquired luminance information.

(Application control)
Next, an example of application control according to the present embodiment will be described. The application control information includes control information such as a start instruction (AUTOSTART), standby (PRESENT), and termination (KILL). FIG. 15 is a diagram illustrating an example of application control according to the present embodiment. The example illustrated in FIG. 15 indicates that the application control unit 244 starts execution based on a start instruction and ends execution based on an end instruction for an already acquired application. The application instructed to start includes, for example, the acquisition command, notification command, and adjustment command described above. The notification command is a command for causing the output control unit 243 to output the control information to the video processing unit 222 when determining that the HDR video includes a blinking scene based on the acquired luminance information. The adjustment command is a command for causing the video processing unit 222 to perform video luminance adjustment processing based on the acquired luminance information. The time when the application control unit 244 instructs to start is, for example, the later of the start time of the program and the time when the acquisition of the application is completed (the time when reception starts in the middle of the broadcast time). The time when the application control unit 244 instructs to end is, for example, the earlier of the end time of the program or the end of reception of the program during the broadcast time.

(Application execution example)
Next, an application execution example will be described. FIG. 16 is a diagram illustrating an execution example of an application according to the present embodiment.
FIG. 16 shows an example of a notification screen (notification screen Dg01) displayed on the display unit 22. The notification screen Dg01 is an example of display information that the application execution unit 245 displays on the output control unit 243 in accordance with the notification command. The notification screen Dg01 is displayed overlapping within a predetermined range from the lower right corner of the program video. The notification screen Dg01 displayed at this display position does not significantly disturb the viewing of the program video by the user. The notification screen Dg01 includes a message, a “scene replacement” button, a “skip” button, and a “display as it is” button. Each button can be selected by a cursor Cs01. However, the selection may be made with a rectangle surrounding the button, without depending on the cursor. The message includes a notification message “Please select a display method for a flash scene.” That prompts the user to select a display method for a blinking scene included in the broadcast video. The message may include a notification message indicating that a blinking scene is included in the broadcast video, and a notification message indicating how many minutes later the blinking scene starts.

When the “scene replacement” button is pressed by a user operation, the application execution unit 245 causes the output control unit 243 to start scene replacement processing. That is, the application execution unit 245 starts the process of replacing the blinking scene with another scene. At this time, the application execution unit 245 may further display a button for selecting which scene (previous scene, opening scene, etc.) to replace, and allow the user to select.
When the “skip” button is pressed by a user operation, the application execution unit 245 causes the output control unit 243 to start blinking scene skip processing. That is, the application execution unit 245 starts a process of continuing to display the video except for the blinking scene.
When the “display as it is” button is pressed by a user operation, or when the “x” mark at the upper right corner of the notification screen Dg01 is pressed, the application control unit 244 ends the operation instructed by the application. At this time, the application execution unit 245 causes the output control unit 243 to stop displaying the notification screen Dg01. Note that “pressing” means obtaining an operation signal indicating a position in the display area from the input unit 215 in accordance with a cursor operation or a button selection operation by the user.

(Modification)
Next, a modification of this embodiment will be described.
The application control unit 244 of the receiving device 20 according to this modification transmits the acquired application to a predetermined other device, and controls processing instructed by a command described in the application transmitted by the other device. That is, in this modification, the application control unit 244 controls the execution of the application in another device instead of executing the application in the application execution unit 245 (for example, FIGS. 15 and 16). When another device includes a communication unit (not shown), the application control unit 244 may cause the other device to receive the application from the acquisition destination described in the application control information. The communication unit is connected to the server device 30 via the communication transmission line CT and transmits / receives various data. In that case, the communication unit 260 may be omitted in the receiving device 20.

  Other devices provide various control information for controlling the presentation of programs received by the reception device 20 to the reception device 20, and realize a control function for displaying various display information related to the presentation of programs from the reception device 20. It functions as a second display. The input unit 215 of the receiving device 20 outputs an operation signal received from another device instead of the remote controller RC to the control unit 240. The input unit 215 is configured as an input / output interface that transmits various types of data from the control unit 240 to other devices. The output control unit 243 transmits the acquired control information to another device instead of outputting it to the video processing unit 222. The other device may be an information device including a display unit that displays visual information and an operation unit that receives an operation input. A touch panel integrated as a display panel that is a display unit and a touch sensor that is an operation unit may be used. The other device may be an information device such as a mobile phone (including a so-called smartphone), a tablet terminal device, and a personal computer.

As described above, in the receiving device 20 according to the present embodiment, the accompanying information processing unit 242 includes the application control unit 244 that controls execution of processing instructed by a predetermined application program based on the application control information. The application program causes the reception device 20 or a computer of another device connected to the reception device 20 to acquire luminance information through communication, and causes the output control unit 243 to output a blinking scene to the output processing units 222 and 232. To restrict.
With this configuration, the display of scenes (flashing scenes) in which the brightness of the video repeats rapidly in a short time is limited based on the brightness information acquired through communication by the process instructed by the application, and the user visually recognizes the flashing scene. It is possible to avoid having a physical condition. In addition, the luminance information is acquired by another device and the control information is displayed, so that the function of the receiving device 20 can be prevented from being complicated, and the user can be recognized as an additional service in broadcasting.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the above-described embodiment, and includes a design and the like within a scope not departing from the gist of the present invention. Moreover, each structure demonstrated in the above-mentioned embodiment can be combined arbitrarily.

  For example, in the above-described embodiment, the example in which the broadcasting system 1 uses the MMT method as the media transport method has been described, but the present invention is not limited to this. The broadcast system 1 may use, for example, an MPEG-2 TS system, an RTP (Real-time Transport Protocol) system, or the like. Further, the output control unit 243 may cause the loudspeaker unit 23 to reproduce the notification sound as control information instead of the notification screen or together with the notification screen. In that case, the output control unit 243 outputs notification voice data indicating the notification voice in which the above-described message is uttered to the voice processing unit 232. The voice processing unit 232 mixes the notification voice indicated by the notification voice data input from the output control unit 243 with the voice indicated by the voice data input from the voice decoding unit 231.

The configuration of the setting menu screen can be changed as appropriate. For example, the display of hierarchy may be performed separately on whether or not the blinking scene countermeasure is implemented and the countermeasure method (scene replacement, skip). In other words, the application control unit 244 and the application execution unit 245 may first cause the user to select whether or not to take countermeasures against blinking scenes, and display and select a countermeasure method (scene replacement, skip) when countermeasures are selected. Good.
Further, for example, the countermeasure method may be switched according to the content genre. For example, it is possible to skip a sports program but display it as it is in a movie.
For content that cannot be skipped (such as live broadcast), a menu may be provided to hide the skip as a countermeasure method or select a countermeasure method for content that cannot be skipped.
Moreover, the example of the notification screen described in the second embodiment may be an initial setting screen at the start of content and at the start of operation in the first embodiment without using the application control unit 244 and the application execution unit 245.

The invention described above can also be implemented in the following manner.
(1) An accompanying information processing unit that acquires brightness information related to blinking of the high dynamic range image from accompanying information associated with a high dynamic range image having a luminance wider than a predetermined luminance range; and output of the high dynamic range image An output processing unit that performs a process related to the above, and when it is determined based on the luminance information that the high dynamic range video includes a blinking scene having a blinking level higher than a predetermined blinking level, An output control unit that limits output of a scene.

(2) The luminance information includes the number of the blinking scenes included in the high dynamic range video, and the output control unit includes the blinking scene when the number of the blinking scenes is equal to or greater than a predetermined number. The receiving device according to (1).

(3) The luminance information includes at least two pieces of information related to a start time of the blinking scene, information related to a duration of the blinking scene, and information related to an end time of the blinking scene, and the output control unit includes: The receiving device according to (1) or (2), wherein the blinking scene is specified based on the at least two pieces of information.

(4) The receiving device according to any one of (1) to (3), wherein the output control unit causes the output processing unit to output the blinking scene by replacing it with another video.

(5) The receiving device according to any one of (1) to (3), wherein the output control unit causes the output processing unit to output an image excluding the blinking scene.

(6) A television device including the receiving device according to any one of (1) to (5).

(7) The accompanying information processing unit includes an application control unit that controls execution of processing instructed by a predetermined application program based on application control information, and the application program is connected to the receiving device or the receiving device. The brightness information is acquired by communication with another computer, and the output control unit causes the output processing unit to limit the output of the blinking scene. (1) to (5) apparatus.

(8) A broadcasting system including a transmission device and a reception device, wherein the transmission device broadcasts a high dynamic range video having a luminance wider than a predetermined luminance range and accompanying information associated with the high dynamic range video. The reception device is configured to acquire luminance information related to blinking of the high dynamic range video from the auxiliary information, an output processing unit that performs processing related to output of the high dynamic range video, and the luminance Based on the information, when it is determined that the high dynamic range video includes a blinking scene having a blinking level higher than a predetermined blinking level, an output control unit that restricts the output of the blinking scene to the output processing unit; A broadcasting system comprising:

(9) A second transmission device that transmits the luminance information by communication is provided, the transmission device transmits accompanying information including application control information, and the accompanying information processing unit is configured to perform predetermined processing based on the application control information. An application control unit that controls execution of processing instructed by the application program, the application program acquires the luminance information by communication to a computer of the receiving device or another device connected to the receiving device; The broadcasting system according to (8), wherein the output control unit causes the output processing unit to limit the output of the blinking scene.

(10) A video acquisition unit that acquires a high dynamic range video having a wider range of brightness than a predetermined brightness range, and an accompanying information that includes brightness information relating to a flashing scene having a higher flashing level than the predetermined flashing level in the high dynamic range video A transmission apparatus comprising: an accompanying information acquisition unit that acquires information; and a transmission unit that transmits a broadcast signal obtained by multiplexing the high dynamic range video and the accompanying information.

(11) Accompanying information processing step of acquiring luminance information related to blinking of the high dynamic range image from incidental information associated with the high dynamic range image having a luminance wider than a predetermined luminance range in the computer of the receiving device; An output processing step for performing processing relating to output of a high dynamic range image; and when determining that the high dynamic range image includes a blinking scene having a blinking level higher than a predetermined blinking level, based on the luminance information. An output control step for limiting the output of the scene, and a program for executing the program.

  Further, a program for realizing the functions of the transmission device 10, the reception device 20, the server device 30, and other devices described above is recorded on a computer-readable recording medium, and the program recorded on the recording medium is stored in a computer system. The transmission device 10, the reception device 20, the server device 30, and other devices may be realized by causing the device to read and execute. The program is a separate program from the application program described in the second embodiment, but some of the functions may be realized based on the application program. Here, “loading and executing a program recorded on a recording medium into a computer system” includes installing the program in the computer system. The “computer system” here includes an OS and hardware such as peripheral devices. Further, the “computer system” may include a plurality of computer devices connected via a network including a communication line such as the Internet, WAN, LAN, and dedicated line.

  The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. As described above, the recording medium storing the program may be a non-transitory recording medium such as a CD-ROM. The recording medium also includes a recording medium provided inside or outside that is accessible from the distribution server in order to distribute the program. The code of the program stored in the recording medium of the distribution server may be different from the code of the program that can be executed by the terminal device. That is, the format stored in the distribution server is not limited as long as it can be downloaded from the distribution server and installed in a form that can be executed by the terminal device.

  Note that the program may be divided into a plurality of parts, downloaded at different timings, and then integrated in the terminal device, or the distribution server that distributes each of the divided programs may be different. Furthermore, a “computer-readable recording medium” holds a program for a certain period of time, such as a volatile memory (RAM) inside a computer system that becomes a server or client when the program is transmitted via a network. Including things. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

DESCRIPTION OF SYMBOLS 1 ... Broadcasting system, 10 ... Transmission apparatus, 110 ... Accompanying information acquisition part, 120 ... Video coding part, 130 ... Audio | voice coding part, 140 ... Multiplexing part, 150 ... Error correction coding part, 160 ... Modulation part, DESCRIPTION OF SYMBOLS 170 ... Transmission part, 20 ... Receiving device, 22 ... Display part, 23 ... Loudspeaker part, 210 ... Broadcast receiving part, 211 ... Decoding part, 212 ... Error correction part, 213 ... Separation part, 215 ... Input part, 221 ... Image | video Decoding unit, 222 ... Video processing unit, 223 ... Display control unit, 231 ... Audio decoding unit, 232 ... Audio processing unit, 233 ... Amplifier, 240 ... Control unit, 241 ... Channel selection unit, 242 ... Attached information processing unit, 243 ... Output control unit, 244 ... application control unit, 245 ... application execution unit, 250 ... storage unit, 260 ... communication unit, BT ... broadcast transmission path, BS ... broadcast satellite, CT ... communication transmission path, RC ... control Equipment

Claims (11)

An accompanying information processing unit for acquiring brightness information relating to blinking of the high dynamic range image from accompanying information associated with the high dynamic range image having a luminance wider than a predetermined luminance range;
An output processing unit for performing processing related to the output of the high dynamic range video;
An output control unit that restricts the output of the blinking scene to the output processing unit when determining that the high dynamic range video includes a blinking scene having a blinking level higher than a predetermined blinking level based on the luminance information. When,
A receiving device. The luminance information includes the number of blinking scenes included in the high dynamic range video,
The output control unit determines that the blinking scene is included when the number of the blinking scenes is a predetermined number or more.
The receiving device according to claim 1. The luminance information includes at least two pieces of information related to a start time of the blinking scene, information about a duration of the blinking scene, and information about an end time of the blinking scene,
The receiving device according to claim 1, wherein the output control unit identifies the blinking scene based on the at least two pieces of information. The receiving device according to any one of claims 1 to 3, wherein the output control unit causes the output processing unit to output the blinking scene by replacing it with another video. The receiving device according to any one of claims 1 to 3, wherein the output control unit causes the output processing unit to output an image excluding the blinking scene.   A television device including the receiving device according to any one of claims 1 to 5. The accompanying information processing unit includes an application control unit that controls execution of processing instructed by a predetermined application program based on application control information,
The application program is stored in a computer of the receiving device or another device connected to the receiving device.
Obtaining the luminance information by communication;
The receiving device according to any one of claims 1 to 5, wherein the output control unit causes the output processing unit to limit the output of the blinking scene. A broadcasting system comprising a transmitting device and a receiving device,
The transmitter transmits a high dynamic range video having a luminance in a wider range than a predetermined luminance range and accompanying information accompanying the high dynamic range video by broadcasting,
The reception device includes an accompanying information processing unit that acquires luminance information related to blinking of the high dynamic range video from the accompanying information;
An output processing unit for performing processing related to the output of the high dynamic range video;
An output control unit that restricts the output of the blinking scene to the output processing unit when determining that the high dynamic range video includes a blinking scene having a blinking level higher than a predetermined blinking level based on the luminance information. When,
A broadcasting system comprising: A second transmitter for transmitting the luminance information by communication;
The transmitting device transmits accompanying information including application control information;
The accompanying information processing unit includes an application control unit that controls execution of a process instructed by a predetermined application program based on the application control information.
The application program is stored in a computer of the receiving device or another device connected to the receiving device.
Obtaining the luminance information by communication;
The broadcasting system according to claim 8, wherein the output control unit is configured to limit the output of the blinking scene to the output processing unit. A video acquisition unit that acquires a high dynamic range video having a brightness that is wider than a predetermined brightness range;
An incidental information acquisition unit for acquiring incidental information including luminance information related to a blinking scene having a blinking degree higher than a predetermined blinking degree in the high dynamic range video;
A transmitter for transmitting a broadcast signal obtained by multiplexing the high dynamic range video and the accompanying information;
A transmission apparatus comprising: In the computer of the receiving device,
Accompanied information processing step of acquiring luminance information related to blinking of the high dynamic range image from incidental information associated with the high dynamic range image having a wider range of luminance than the predetermined luminance range;
An output processing step for performing processing relating to the output of the high dynamic range video;
An output control step for restricting the output of the blinking scene when it is determined that the high dynamic range video includes a blinking scene having a higher blinking degree than a predetermined blinking degree based on the luminance information;
A program for running