JP2009060540A - Data transmission apparatus, data transmission method, audiovisual environment control device, audiovisual environment control system, and audiovisual environment control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an audiovisual environment control system achieving illumination control for the optimal audiovisual environment in accordance with a switching technique of a screen used for switching video scenes. <P>SOLUTION: The data transmission apparatus multiplexes segment breakpoint information which divides video data into segments comprised of one or more arbitrary numbers of frames, and indicates start time and/or intervals of the respective segments, and video switching method information which indicates a video switching method between the segments with the video data in the segment unit, and transmits the information. Meanwhile, a data reception apparatus comprises: a data separation part 32 for separating the segment breakpoint information and the switching method information from the video data; and an illumination control data generation part 35 for controlling illumination light of an illumination device 38 by using the segment breakpoint information and the switching method information. Thus, the illumination light of the audiovisual environment is properly controlled in accordance with the switching technique of the screen used for switching the video scenes. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a data transmission apparatus and data capable of controlling illumination light around a video display device in accordance with the atmosphere and scene setting of the video shooting scene when the video is displayed on the video display device. The present invention relates to a transmission method, a viewing environment control device, a viewing environment control system, and a viewing environment control method.

  For example, when displaying an image with an image display device such as a television receiver, or when projecting and displaying an image using a projector device, the surrounding illumination light is adjusted according to the display image. There is known a technique for providing a viewing effect such as enhancing the sense of presence.

  Further, in Patent Document 1, it is adapted to the shooting scene atmosphere and scene setting intended by the video producer, and appropriately controls the illumination light of the viewing environment, thereby giving the viewer a sense of realism and a more advanced level. In order to obtain a video effect, there has been proposed one in which scene break position information indicating a break position of each scene of video data is added to the video data and transmitted.

According to this, the viewing environment illumination device can hold the illumination light of the illumination device installed around the display device substantially constant in the same scene in the video data to be displayed based on the scene break position information. Thus, the illumination light in the viewing environment can be switched and controlled at an appropriate timing to realize the optimal illumination control in the viewing environment.
WO2007 / 052395

  In drama and historical drama, cut-in, cut-in, cut-out, and visual effects are added as a way to switch screens of different scenes in the program depending on the intention of the video producer (screenwriter, director, etc.) Switching techniques such as fade-in, fade-out, or a combination of these fade-in / fade-out, cut-out fade-in, fade-out cut-in, and dissolve are used. The video producer edits the video so that the program is excited by using these switching techniques depending on the intention of expressing the scene.

  However, in the conventional technology described above, it is possible to perform illumination control in conjunction with a cut-switched image, which is a technique for instantaneously switching from one screen to another screen, but gradually fade-in, fade-out, etc. It is difficult to perform illumination control in conjunction with video using a switching technique that changes the gain level of the video signal to switch the screen.

  For this reason, there is a possibility that the illumination light changes momentarily when switching screens in different scenes in the program, which may give the viewer a sense of incongruity. When displaying the edited video, there is a problem in that the presence of the viewing environment may be hindered.

  The present invention has been made in view of the above problems, and is a data transmission device capable of realizing optimal viewing environment lighting control according to a screen switching technique used when switching video scenes, An object is to provide a data transmission method, a viewing environment control device, a viewing environment control system, and a viewing environment control method.

  According to a first aspect of the present invention, in a data transmitting apparatus that transmits video data composed of one or more frames, the video data is divided into segments composed of an arbitrary number of one or more frames. Segment delimiter information indicating a start time and / or section and video switching method information indicating a video switching method between the segments are added to the video data and transmitted in units of segments.

  The second invention of the present application is characterized in that the video switching method information includes information relating to a video switching method at a head portion of each segment.

  The third invention of the present application is characterized in that the video switching method information includes information relating to a video switching section in a head portion of each segment.

  The fourth invention of the present application is characterized in that the video switching method information includes information relating to a video switching method at the end portion of each segment.

  The fifth invention of the present application is characterized in that the video switching method information includes information relating to a video switching section in a tail portion of each segment.

  The sixth invention of the present application is characterized in that the information regarding the video switching method is information for determining at least one of cut-in, cut-out, fade-in, fade-out, and dissolve.

  According to a seventh aspect of the present invention, there is provided video data to be displayed on a display device, segment delimiter information indicating a start time and / or a section of a segment obtained by dividing the video data by one or more arbitrary frames, and the segment Receiving means for receiving video switching method information indicating the video switching method between the segments, which is added to the video data in units; and on the periphery of the display device based on the segment delimiter information and the video switching method information And a control means for controlling the illumination light of the installed illumination device.

  The eighth invention of the present application is characterized in that the control means switches and controls the illumination light of the illumination device in the segment unit.

  The ninth invention of the present application is characterized in that the control means controls illumination light of the illumination device using a feature amount of the video data.

  A tenth aspect of the present invention includes the viewing environment control device and a lighting device whose viewing environment illumination light is controlled by the viewing environment control device.

  According to an eleventh aspect of the present invention, in the data transmission method for transmitting video data composed of one or more frames, the video data is divided into segments composed of an arbitrary number of one or more frames. Segment delimiter information indicating a start time and / or section and video switching method information indicating a video switching method between the segments are added to the video data and transmitted in units of segments.

  According to a twelfth aspect of the present application, in response to an external request, segment delimiter information indicating the start time and / or section of a segment obtained by dividing video data into one or more arbitrary number of frames, and video between the segments Video switching method information indicating a switching method is added to the video data and transmitted in units of segments.

  According to a thirteenth aspect of the present application, there is provided video data to be displayed on a display device, segment delimiter information indicating a start time and / or section of a segment obtained by dividing the video data into one or more arbitrary frames, and the segment Video switching method information indicating the video switching method between the segments, added to the video data in units, and installed around the display device based on the segment delimiter information and video switching method information The illumination light of the illumination device is controlled.

  According to the present invention, the illumination light in the viewing environment can be appropriately controlled by adapting to the screen switching technique used when the video scene intended by the video producer is switched, and the viewer feels realistic. Can give a more advanced video effect.

<First Embodiment>
Hereinafter, a first embodiment of the viewing environment control system of the present invention will be described in detail with reference to FIGS. Here, FIG. 1 is a block diagram showing a schematic configuration of a main part of a video transmission apparatus in the viewing environment control system of the present embodiment, and FIG. 2 shows an example of an output bit stream of the video transmission apparatus in the viewing environment control system of the present embodiment. FIG. 3 is a diagram for explaining an example of the data structure of additional data in the viewing environment control system of the present embodiment.

  FIG. 4 is a diagram for explaining video components, FIG. 5 is an explanatory diagram showing an example of scene break information in the viewing environment control system of this embodiment, and FIGS. 6 to 8 are for explaining screen switching methods. FIG. 9 is a block diagram showing a schematic configuration of the main part of the video receiving apparatus in the viewing environment control system of the present embodiment, and FIG. 10 is a block diagram showing a schematic configuration of the illumination control data generation unit of FIG.

  FIG. 11 is a flowchart showing a flow for determining a generation processing method of illumination control data based on switching method information in the switching control processing unit of the present embodiment, and FIG. 12 is segment delimiter information in the viewing environment control system of the present embodiment. FIG. 13 is an explanatory diagram illustrating an example of switching method information, and FIG. 13 is an explanatory diagram illustrating an example of illumination control data generation processing by the viewing environment control system of the present embodiment. FIG. 14 is an explanatory diagram showing another example of segment delimiter information and switching method information in the viewing environment control system of this embodiment, and FIG. 15 is another example of lighting control data generation processing by the viewing environment control system of this embodiment. It is explanatory drawing shown.

  As shown in FIG. 1, the video transmission apparatus (data transmission apparatus) in the present embodiment transmits each of additional data including video data, audio data, segment delimiter information, switching method information, and the like as a transport stream packet. A data multiplexing unit 1 that divides and multiplexes the data into a TSP) format, and a transmission unit that modulates the output data of the data multiplexing unit 1 after adding an error correction code to the transmission data as broadcast data. 2 are provided.

  FIG. 2 is an explanatory diagram showing an outline of the structure of a transport stream packet (TSP) defined by MPEG2 (Moving Picture Experts Group 2) -Systems, and 11 is the data content of TSP and other data defined by MPEG2-Systems. A header in which information is described, 12 is an extension header (adaptation field) that can describe information determined by the sender, and 13 is a payload composed of data such as video and audio. In the present embodiment, for example, video data and audio data are transmitted in the payload 13 and additional data is transmitted in the extension header (adaptation field) 12 or embedded in a payload composed of data such as video and audio. Is possible. Further, the data streams of video data, audio data, and additional data may be multiplexed and transmitted.

  FIG. 3 is a diagram for explaining an example of the data structure of the additional data. In the present embodiment, video data is divided into segments each composed of an arbitrary number of one or more frames, and various additional information related to each segment is described in segment units.

  Here, the segment is defined as a configuration in which video content is divided by an arbitrary length in the time direction. For example, the segment is a segment corresponding to a scene, a shot, a frame, or the like. For example, when a segment corresponds to a scene, information existing in shot units is collectively described in the segment. When a segment corresponds to a shot, the same information is repeatedly described in all the corresponding segments as information existing in a scene unit. In addition, when a segment corresponds to a frame, the same information is repeatedly described in all the corresponding segments as information existing in scene units and shot units.

  Note that the viewing environment illumination is mainly controlled in units of scenes in which the situation of the scene is constant, but is often controlled in units of shots in which the situation of shooting is constant. In some cases, fine-grained control in units of frames is sometimes desirable, so the amount of data to be added can be reduced by dividing the segments into units that often require the viewing environment lighting to be controlled to be constant depending on the content of the display data. The additional data can be described efficiently while suppressing the increase.

  Next, the configuration of a video including scenes and shots will be described with reference to FIG. Video data constituting a continuous moving image can be considered in a three-layer structure as shown in FIG. The 1st layer which comprises an image | video (Video) is a flame | frame (Frame). A frame is a physical layer and refers to a single two-dimensional image. Frames are usually obtained at a rate of 30 frames per second. The second layer is a shot. The third layer is a scene.

  As shown in FIG. 5, the segment delimiter information is composed of a segment number, a start time, and section information. The segment start time is specified by a time code added to indicate playback time information of each of the video data and audio data. For example, as shown in FIG. 5, the time (h): minute (m) of the video data : Second (s): It is composed of information indicating a frame (f). The segment section is composed of information indicating a time (h): minute (m): second (s): frame (f) indicating a period from the time indicating the start time code of the segment to the start time code of the next segment. Has been.

  The switching method information indicates the screen switching technique used for the head video in segment units and the screen switching technique used for the tail video. As described above, either cut-in, fade-in, or dissolve is described, and as a video switching method at the end of the segment, either cut-out or fade-out is described. In addition, switching times to which these screen switching techniques are applied are described.

  Here, a switching technique for switching the screens of different scenes in the program will be described with reference to FIGS. Here, each of cut switching, cut-in, cut-out, fade-in, fade-out, cut-out fade-in, fade-out cut-in, and dissolve will be described as switching techniques, but the switching technique is not limited to this. Each will be described below.

  First, cut switching will be described with reference to FIG. Cut switching is a technique that switches from one screen to another instantaneously, and edits so that shocks and noises do not appear during screen switching by switching to the vertical blanking period of the screen. . In the case of a video that has been edited in this way, the constant lighting control data estimated in the segment is retained, and the constant lighting control data estimated in the next segment at the time of switching the segment is instantaneously simultaneously with the video. By switching to, it becomes possible to perform illumination control linked to the video. However, if the lighting control data value changes suddenly before and after the segment switching, a certain threshold value is set in advance, and the lighting control data value is changed step by step if the threshold value is exceeded. Processing may be added.

  As another example of cut switching, as shown in FIG. 6B, the screen before switching is a blank screen, and the switching is instantaneously switched to a complete video level after switching, and vice versa. A cut-out technique for instantaneously switching from a complete video level to a blank screen as shown in FIG.

  In addition, fade-in and fade-out are often used as techniques for changing the video level in stages when the screen is switched. As shown in FIG. 7A, fade-in is a technique in which an image is gradually displayed from a screen blank state, and the gain of the video signal is increased at an arbitrary speed from the blank screen when the screen is switched. is there. In the case of a video that has been edited in this way, the value of the illumination control data is gradually increased to a specified fade value at an arbitrary speed in accordance with the change in the gain of the video signal when the screen is switched. It is possible to perform illumination control linked to the.

  As shown in FIG. 7B, the fade-out is a technique in which the image is gradually blanked, and an operation opposite to the fade-out is performed. In the case of a video that has been edited in this way, the value of the lighting control data is also specified in accordance with the change in the gain of the video signal when the screen is switched based on the value of the constant lighting control data estimated in the segment. By gradually lowering the fade value at an arbitrary speed, it becomes possible to perform illumination control linked to the video. For the fade value, for example, all RGB values may be set to 0, or an RGB value corresponding to the black level of the received video may be used as the value of the illumination control data.

  Moreover, as an example which combined the technique mentioned above, as shown in FIG.7 (C) and FIG.7 (D), there exist cutout fade-in, fade-out cut-in, etc., respectively, before and after switching of a screen, cutout and Fade-in, fade-out, and cut-in processing is performed on the video signal.

  Furthermore, as shown in FIG. 8, when connecting from the video A before switching to the video B after switching, there is a dissolve (overlap) as a switching technique in which the video B overlaps while the video A disappears, In particular, a dissolve from a video with nothing is called a fade-in, while a dissolve from a video with nothing is called a fade-out.

  As described above, there are several patterns as a screen switching technique when switching between different screens. In order to enable illumination control in conjunction with these, in this embodiment, a video switching method (switching technique) and Information of the switching time is described and added for each segment. In addition, since the information regarding such a video switching method can be generated using editing information at the time of video editing, in this case, it is possible to omit the work of creating new video switching method information.

  Next, the scene setting information indicates the scene scene setting status of the video data included in the segment. Specifically, the season setting information indicates the season on the story of the scene, the time information indicating the time, the place Location information representing, period information representing the era, weather information representing the weather, area information representing the region, and the like are described.

  By using this scene setting information, it is possible to estimate the illumination light according to the scene status of the displayed video (scene setting status on the story) and irradiate the viewing space regardless of the feature amount of the video to be displayed (For details, see PCT / JP2007 / 057458 specification previously filed by the applicant of the present application). Since the scene setting information changes in units of scenes, the scene setting information can be efficiently described in units of segments by dividing the segments in accordance with the scenes.

  The shooting illumination information indicates the lighting status at the time of shooting of the video data included in the segment. Specifically, the lighting type information indicates the lighting type of the shooting lighting used for shooting the video data. Describes lighting fixture information representing the nature of the photographic illumination, irradiation direction information representing the direction of the photographic illumination light, illumination intensity information representing the intensity of the photographic illumination light, illumination color information representing the chromaticity of the photographic illumination light, etc. Has been.

  By using this shooting illumination information, it is possible to estimate the illumination light according to the lighting situation at the time of video shooting and irradiate the viewing space regardless of the feature amount of the video to be displayed. PCT / JP2007 / 057760 specification previously filed by the applicant of the present application). In addition, since the photographing illumination information often changes in shot units or scene units, the photographing illumination information can be efficiently described in segment units by dividing the segments according to shots and scenes.

  In the present embodiment, scene setting information and shooting illumination information are included in the additional data in order to obtain more appropriate viewing environment illumination. However, these pieces of information are not necessarily required. In the present invention, segment delimiter information and switching method information may be added to video data or audio data, and the data structure at that time is not limited to the above.

  Here, as described above, video data is divided into segments corresponding to scenes or shots composed of an arbitrary number of one or more frames, and the segment delimiter information and switching method information are added in units of the segments. Thus, it is possible to perform appropriate lighting control according to the intention of the video producer.

  Next, a video reception device (data reception device) that receives broadcast data transmitted from the video transmission device, displays and reproduces video and audio, and controls the viewing environment illumination at that time will be described.

  As shown in FIG. 9, the video receiving apparatus in the present embodiment receives and demodulates broadcast data input from a transmission path, and performs error correction from a receiving unit 31 and output data of the receiving unit 31. Separate and extract each of additional data including video data to be output to the display device 36, TC (time code), audio data to be output to the audio playback device 37, TC (time code), segment delimiter information, switching method information, and the like. And a data separator 32.

  Further, based on the additional data separated by the data separation unit 32 and / or the feature amount of the video data and the audio data, illumination control data (RGB data) suitable for displaying each frame is generated, and the viewing environment space is set. An illumination control data generation unit 35 that outputs to the illumination device 38 that illuminates, and delay generation units 33 and 34 that delay and output video data and audio data by the processing time in the illumination control data generation unit 35 are provided.

  Here, the illumination device 38 can be configured by an LED that is installed around the video display device 36 and emits light of, for example, three primary colors of RGB having a predetermined hue. However, the illumination device 38 may be configured to be able to control the illumination color and brightness of the surrounding environment of the video display device 36, and is not limited to the combination of LEDs that emit the predetermined color as described above. Alternatively, a white LED and a color filter may be used, or a combination of a white light bulb, a fluorescent tube and a color filter, a color lamp, or the like may be applied. Further, it is sufficient that one or more lighting devices 38 are installed.

  The time code is information added to indicate the reproduction time information of each of the video data and the audio data. For example, the time (h): minute (m): second (s): frame ( f).

  As illustrated in FIG. 10, the illumination control data generation unit 35 of the present embodiment includes an additional data analysis unit 351 that analyzes additional data separated by the data separation unit 32, and a segment extracted by the additional data analysis unit 351. An illumination control data estimation unit 352 that calculates an illumination control data estimated value (R, G, B) based on the break information and video data, TC, audio data, TC, or scene setting information and / or photographing illumination information. And based on the switching method information extracted by the additional data analysis unit 351, based on the switching control processing unit 353 that calculates control data at the time of video switching, the control data and the illumination control data estimated value, And an illumination control unit 354 that outputs illumination control data (R, G, B) for controlling the illumination device 38.

  Here, when the control data is calculated based on the switching method over different segments in the switching control processing unit 353, the lighting control data estimated value calculated from the lighting control data estimating unit 352 (from other segments). Control data for controlling the illumination control unit 354 may be calculated using the obtained illumination control data estimated value).

  The illumination control data estimation unit 352 performs illumination estimation processing suitable for displaying each frame based on the feature amounts of the video data and audio data, or based on scene setting information and / or photographing illumination information included in the additional data. Thus, an illumination estimation process suitable for displaying each scene and shot is performed. Further, the illumination estimation processing may be performed by weighted averaging the illumination estimation result based on the scene setting information and / or the photographic illumination information and the illumination estimation result based on the feature amount of the video data and audio data. .

  Note that various techniques including known ones can be used as a method of estimating the state of ambient light at the time of photographing by the illumination control data estimation unit 352. Here, in addition to the feature amount of the video data, the feature amount of the audio data is also used for estimating the field (atmosphere) of each segment, but this further improves the estimation accuracy of the field (atmosphere). Therefore, the field (atmosphere) of the shooting scene may be estimated from only the feature amount of the video data.

  Here, as the feature amount of the video data, for example, color signals (Cb, Cr) and a luminance signal (Y) are extracted from a display image of a color television, and three-color light used for a light source is obtained from the color signal and the luminance signal. Calculate the appropriate dimming illuminance ratio of (red light, green light, blue light), set the illuminance of the three color light according to the illuminance ratio, mix the three color light and use it as lighting control data, color TV The image displayed on the screen is divided into a plurality of parts, the average hue of the divided part of the image corresponding to the part controlled by the illumination means is detected, and the illumination control corresponding to the divided part is performed based on the detected hue. A data estimated value may be calculated. Further, as the feature amount of the audio data, a volume, an audio frequency, or the like can be used.

  Further, by using the scene setting information and the photographing illumination information, it is possible to more accurately estimate the color temperature and the illumination intensity of the illumination light used at the time of video photographing. Further, the illumination control data estimated value calculated from the scene setting information and / or the photographing illumination information is corrected and output in consideration of the illumination control data estimated value calculated from the feature amount of the video data and audio data. Also good.

  As described above, in this embodiment, a mode for performing illumination estimation processing using the feature amounts of video data and audio data (video estimation mode), and feature data of video data and audio data are not used. There are modes (illumination estimation modes) for performing illumination estimation processing only from the included scene setting information and / or photographic illumination information, and these modes can be switched and set by the viewer on the receiving device side. .

  Next, an example of a method for calculating illumination control data based on the switching method information will be described. Here, FIG. 11 is a flowchart showing a flow for determining a generation processing method of illumination control data based on switching method information in the switching control processing unit of the present embodiment, and FIG. 12 is segment delimiter information and switching method of the present embodiment. FIG. 13 is an explanatory diagram illustrating an example of illumination control data generation processing according to the present embodiment. FIG. 14 is an explanatory diagram illustrating another example of segment delimiter information and switching method information according to the present embodiment, and FIG. 15 is an explanatory diagram illustrating another example of the illumination control data generation processing according to the present embodiment.

  First, the flow for determining the illumination control data generation processing method based on the switching method information will be described with reference to FIGS. 10 and 11. The additional data analysis unit 351 of the illumination control data generation unit 35 extracts segment break information and switching method information from the additional data separated by the data separation unit 32, and the switching control processing unit 354 switches to the segment break information. Based on the method information, control data for controlling the illumination estimation process is calculated.

  Here, an example of segment delimiter information and switching method information is shown in FIG. Here, since “2 seconds” is set as the tail switching time for segment 1, “fade out” as the tail switching method is started from the segment delimiter information and the switching method information according to the flowchart of FIG. The time is set to “13: 59: 30: 27” (additional data processing 1)). Since the screen switching method in segment 1 in the switching portion from segment 1 to segment 2 is set to “fade out”, control data for performing fade out processing is sent to the illumination control unit 354 (fade out). processing).

Next, an example of fade-out processing will be described with reference to FIG. In FIG. 13, the vertical axis represents the illumination control data value, and the example of FIG. 13 shows an example of R, which is one of the illumination control data values, but G and B will also be described using the same diagram. can do. Assuming that the illumination control data value estimated for the segment 1 is the illumination value 1, as a fade-out process in the illumination control unit 354,
Lighting control data = ratio × lighting value 1 (0.0 ≦ ratio ≦ 1.0)
The lighting control data is calculated based on the above formula, and as the control data, the ratio is gradually changed from 1.0 to 0.0, and linear processing is performed so that the RGB values of the lighting control data are all 0 (black) at the start time of segment 2 I do.

  The illumination value 1 is the illumination control data estimated value in segment 1 (in the illumination estimation mode) from the scene setting information and / or shooting illumination information included in the additional data, or the feature amount of the video data and audio data. It is possible to use the illumination control data estimated value (in the video estimation mode) for segment 1 calculated using the above. In the fade-out process described above, the illumination control in the fade-out section is linearly processed. Needless to say, a function that can perform the fade-out process more smoothly, such as a logarithm or a trigonometric function, may be used.

  Furthermore, in the present embodiment, the illumination control linked to the fade-out process is performed by the linear process described above, but the illumination control data in the fade-out section is estimated from the video feature amount for each frame, every few frames, or every few seconds. It doesn't matter. Here, the RGB values after fading out are all set to 0 (black). However, the RGB values corresponding to the blank screen value of the video and the RGB values corresponding to the black level of the video may be controlled. Alternatively, control may be performed so that the value specified as the fade-out value is obtained, and the present invention is not limited to the above-described processing.

  Next, since “2 seconds” is set as the head switching time for segment 2, according to the flowchart of FIG. 14, “fade in” as the head switching method is selected from the segment delimiter information and the switching method information. The fade-in end time is set to “13: 59: 34: 27” (additional data processing 1)). And since the switching method of the screen in the segment 2 in the switching part from the segment 1 to the segment 2 is set to “fade in”, the control data for performing the fade in process is obtained as the illumination control data estimation unit. 352 (in video estimation mode) or sent to the illumination control unit 354 (in illumination estimation mode) (fade-in processing).

  Here, an example of the fade-in process will be described with reference to FIG. First, when the video estimation mode is selected and set, during the fade-in process, the illumination control data estimated value is calculated from the feature amount of the video data and audio data for each frame, and the illumination control data estimation at the fade-in end time is performed. Let the value be the illumination value 2 in segment 2.

  In other words, the switching control processing unit 353 controls the illumination control data estimation unit 352 so that the illumination control data estimation value is calculated from the video feature amount for each frame from the start time of the segment 2 to the fade-in end time. Is output. Here, in the fade-in section, the illumination control data estimated value is calculated from the video feature amount every frame, but the illumination control data estimated value may be calculated every several frames or every few seconds. However, the present invention is not limited to processing in units of frames.

On the other hand, when the illumination estimation mode is selected and set, the illumination control data estimated value in the segment 2 calculated using the scene setting information and / or the photographing illumination information at the start time of the segment 2 is the illumination value 2. As a fade-in process in the lighting control unit 354,
Lighting control data = ratio × lighting value 2 (0.0 ≦ ratio ≦ 1.0)
The lighting control data is calculated based on the above formula, and the ratio of the control data is gradually changed from 0.0 to 1.0, and the RGB values of the lighting control data at the start time of segment 2 are all changed from 0 (black) to the estimated value 2. Perform linear processing that changes. Also in this case, it goes without saying that the arithmetic control for the illumination control data estimated value is not limited to the linear processing. Furthermore, it goes without saying that the RGB values before the fade-in are not all 0 (black).

  Furthermore, another example of segment delimiter information and switching method information is shown in FIG. Here, since the description about the switching method is not included for segment 1, the processing based on the switching method information is not performed. Next, since “3 seconds” is set as the head switching time for the segment 2, “dissolve”, dissolve as the head switching method from the segment delimiter information and the switching method information according to the flowchart of FIG. The end time is set to “14: 01: 38: 27” (additional data processing 1)). Since the screen switching method in segment 2 at the switching portion from segment 1 to segment 2 is set to “dissolve”, control data for performing the dissolve processing is sent to the illumination control unit 354 (dissolve processing). ).

  Here, an example of the dissolve process will be described with reference to FIG. First, when the illumination estimation mode is selected and set, the illumination control data estimated value in the segment 1 calculated using the scene setting information and / or the photographing illumination information at the start time of the segment 1 is the illumination value 1, the segment When the illumination control data estimated value in the segment 2 calculated using the scene setting information and / or the photographing illumination information at the start time of 2 is the illumination value 2, the dissolve processing in the illumination control unit 354 is illustrated in FIG. As shown in the figure, in the dissolve section from the start time of segment 2 to the dissolve end time, linear processing is performed so that the RGB value of the illumination control data at the dissolve end time is changed to the illumination value 2 little by little. I do.

  In the above-described dissolve processing, the illumination control data estimated value in the dissolve processing section is linearly processed. However, functions such as logarithms and trigonometric functions that can perform the dissolve processing more smoothly can be used. Needless to say, it is good.

  On the other hand, when the video estimation mode is selected and set, the illumination control data estimated value is calculated from the feature amount of the video data and audio data for each frame during the dissolve process, and the illumination control data estimated value at the dissolve end time is calculated. The illumination value in segment 2 is assumed to be 2. It goes without saying that the illumination control data estimated value may be calculated every several frames or every few seconds instead of calculating the illumination control data estimated value from the video feature amount every frame.

  As described above, according to the present embodiment, the fade light included in the video data is basically held in the same segment while maintaining the illumination light of the illumination device installed around the display device substantially constant. The illumination light can be changed by adapting to a screen switching technique such as dissolve, and appropriate illumination control according to the intention of the video producer can be performed.

  In the above embodiment, the video switching section such as the fade section and the dissolve section is included as a part of the head and / or the end of the segment section. However, the present invention is not limited to this. Video data may be divided into video switching sections such as sections and dissolve sections as one independent segment. This will be described below as a second embodiment of the present invention.

<Second Embodiment>
Next, another example of the method for calculating the illumination control data based on the switching method information will be described as the second embodiment of the present invention, but the description of the same part as the first embodiment will be omitted. Here, FIG. 16 is an explanatory diagram showing an example of segment delimiter information and switching method information in the viewing environment control system of this embodiment, and FIG. 17 shows an example of illumination control data generation processing by the viewing environment control system of this embodiment. FIG. 18 is an explanatory diagram showing another example of segment delimiter information and switching method information in the viewing environment control system of this embodiment. FIG. 19 is another example of lighting control data generation processing by the viewing environment control system of this embodiment. It is explanatory drawing which shows the example of.

  The additional data analysis unit 351 of the illumination control data generation unit 35 extracts segment break information and switching method information from the additional data separated by the data separation unit 32, and the switching control processing unit 354 switches to the segment break information. Based on the method information, control data for controlling the illumination estimation process is calculated.

Here, an example of segment delimiter information and switching method information is shown in FIG.
Here, since the switching method information is not described for the segment 1, the lighting control based on the switching method information is not performed in the segment 1 section.

  In segment 2, since only the tail switching method is set and the tail switching time is not set, “fade out”, “fade out” are selected as the tail switching method from the segment delimiter information and the switching method information according to the flowchart of FIG. The start time is set to “13: 59: 32: 27” of the segment 2 start time, and the fade-out section is set to “2 seconds” from the section information of the segment delimiter information (additional data processing 2)). Since the screen switching method in the segment 2 is set to “fade out”, control data for performing the fade out process is sent to the illumination control unit 354 (fade out process).

Next, an example of fade-out processing will be described with reference to FIG. Also in FIG. 17, the vertical axis is the illumination control data value as in FIG. 12, and in the example of the figure, an example of R which is one of the illumination control data values is shown, but the same applies to G and B. This can be explained using the figures. Assuming that the illumination control data value estimated for the segment 1 is the illumination value 1, as a fade-out process in the illumination control unit 354,
Lighting control data = ratio × lighting value 1 (0.0 ≦ ratio ≦ 1.0)
The lighting control data is calculated based on the above formula, and the control data is linearly changed so that the ratio is gradually changed from 1.0 to 0.0, and the RGB values of the lighting control data are all set to 0 (black) at the segment 3 start time. Do.

  The illumination value 1 is the illumination control data estimated value in segment 1 (in the illumination estimation mode) from the scene setting information and / or shooting illumination information included in the additional data, or the feature amount of the video data and audio data. It is possible to use the illumination control data estimated value (in the video estimation mode) for segment 1 calculated using the above. In the fade-out process described above, the illumination control in the fade-out section is linearly processed. Needless to say, a function that can perform the fade-out process more smoothly, such as a logarithm or a trigonometric function, may be used.

  Furthermore, in the present embodiment, the illumination control linked to the fade-out process is performed by the linear process described above, but the illumination control data in the fade-out section is estimated from the video feature amount for each frame, every few frames, or every few seconds. It doesn't matter. Here, the RGB values after fading out are all set to 0 (black). However, the RGB values corresponding to the blank screen value of the video and the RGB values corresponding to the black level of the video may be controlled. Alternatively, control may be performed so that the value specified as the fade-out value is obtained, and the present invention is not limited to the above-described processing.

  Next, since only the head switching method is set for segment 3 and no head switching time is set, according to the flowchart of FIG. 11, the segment switching information and the switching method information are used as the head switching method. “Fade in”, the fade-in end time is set to “13: 59: 36: 27” from the segment information of the segment delimiter information, and the fade-in interval is set to “2 seconds” from the segment information of the segment delimiter information (additional data processing) 2)). Since the screen switching method in segment 3 is set to “fade in”, control data for performing the fade in process is sent to the illumination control data estimation unit 352 (in the video estimation mode), or And sent to the illumination control unit 354 (in the illumination estimation mode) (fade-in process).

  Here, an example of the fade-in process will be described with reference to FIG. First, when the video estimation mode is selected and set, during the fade-in process, the illumination control data estimated value is calculated from the feature amount of the video data and audio data for each frame, and the illumination control data estimation at the fade-in end time is performed. Let the value be the illumination value 2 in segment 4.

  In other words, the switching control processing unit 353 controls the illumination control data estimation unit 352 so that the illumination control data estimation value is calculated from the video feature amount for each frame from the start time of the segment 3 to the fade-in end time. Is output. Here, in the fade-in section, the illumination control data estimated value is calculated from the video feature amount every frame, but the illumination control data estimated value may be calculated every several frames or every few seconds. However, the present invention is not limited to processing in units of frames.

On the other hand, when the illumination estimation mode is selected and set, in this case, the scene setting information and / or the shooting illumination information set in the segment 3 and the segment 4 are the same. The estimated value of the illumination control data calculated from the illumination information is the same value in the segments 3 and 4. From the above, assuming that the illumination control data estimated value in the segments 3 and 4 calculated using the scene setting information and / or the photographing illumination information at the start time of the segment 3 is the illumination value 2, the illumination control unit 354 As a fade-in process,
Lighting control data = ratio × lighting value 2 (0.0 ≦ ratio ≦ 1.0)
The lighting control data is calculated based on the above formula, and the ratio of the control data is gradually changed from 0.0 to 1.0, and the RGB values of the lighting control data at the start time of segment 2 are all changed from 0 (black) to the estimated value 2. Perform linear processing that changes. Also in this case, it goes without saying that the arithmetic control for the illumination control data estimated value is not limited to the linear processing. Furthermore, it goes without saying that the RGB values before the fade-in are not all 0 (black).

  Further, another example of segment delimiter information and switching method information is shown in FIG. Here, since the description about the switching method is not included for segment 1, the processing based on the switching method information is not performed. Next, since only the head switching method is set for segment 2 and no head switching time is set, “dissolve” is selected as the head switching method from the segment delimiter information and the switching method information according to the flowchart of FIG. “The dissolve end time is set to“ 13: 59: 35: 27 ”(additional data processing 2)). Since the screen switching method in segment 2 at the switching portion from segment 2 to segment 3 is set to “dissolve”, control data for performing the dissolve processing is sent to the illumination control unit 354 (dissolve processing). ).

  Here, an example of the dissolve process will be described with reference to FIG. In this case, as in the fade-in process, the scene setting information and / or shooting illumination information set in segment 2 and segment 3 are the same, so the illumination calculated from the scene setting information and / or shooting illumination information The control data estimated value is the same value in the segment 2 and segment 3 sections.

  From the above, first, when the illumination estimation mode is selected and set, the illumination control data estimation in the segments 2 and 3 calculated using the scene setting information and / or the shooting illumination information at the start time of the segment 2 Assuming that the illumination control data estimated value in the segment 1 calculated using the scene setting information and / or the shooting illumination information at the start time of the segment 1 and the illumination control data estimated value in the segment 1 is the illumination value 1, the value in the illumination control unit 354 In the dissolve process, as shown in FIG. 19, the illumination control data value is gradually changed from the illumination value 1 in the section from the start time of the segment 2 to the start time of the segment 3, and the illumination control data at the start time of the segment 2 A linear process is performed to change the RGB value of the illumination value to the illumination value 2.

  In the above-described dissolve processing, the illumination control data estimated value in the dissolve processing section is linearly processed. However, functions such as logarithms and trigonometric functions that can perform the dissolve processing more smoothly can be used. Needless to say, it is good.

  On the other hand, when the video estimation mode is selected and set, the illumination control data estimated value is calculated from the feature amount of the video data and audio data for each frame during the dissolve process, and the illumination control data estimated value at the dissolve end time is calculated. Used as illumination value 2 in segment 3. It goes without saying that the illumination control data estimated value may be calculated every several frames or every few seconds instead of calculating the illumination control data estimated value from the video feature amount every frame.

  As described above, also in the present embodiment, it is possible to change the illumination light in accordance with the screen switching technique such as fade and dissolve included in the video data, and appropriate illumination according to the intention of the video producer. Control can be performed.

  In the first and second embodiments of the present invention described above, the case where segment delimiter information and switching method information are added to broadcast data and transmitted is described. However, when additional data is not added to broadcast data. By transmitting / receiving segment delimiter information and switching method information corresponding to video data to be displayed from an external server device or the like, it is possible to realize an optimal viewing environment during video playback. This will be described below as a third embodiment of the present invention.

<Third Embodiment>
Hereinafter, the third embodiment of the viewing environment control system of the present invention will be described in detail with reference to FIGS. 20 and 21. The same parts as those in the first and second embodiments are denoted by the same reference numerals, and the description thereof is omitted. To do. Here, FIG. 20 is a block diagram showing a schematic configuration of the main part of the external server device in the viewing environment control system of the present embodiment, and FIG. 21 shows a schematic configuration of the main part of the video receiving device in the viewing environment control system of the present embodiment. It is a block diagram.

  As shown in FIG. 20, the external server device (data transmission device) in the present embodiment receives a transmission request for switching method information related to specific video data (content) from the video reception device (data reception device) side. 51, a data storage unit 52 that stores switching method information for each video data (content), and a switching method information that has received a transmission request, together with segment delimiter information, a requesting video receiving device (data receiving device) And a transmitting unit 53 for transmitting to.

  Here, the switching method stored in the data storage unit 52 of the present embodiment is associated with the start time information and the section information of each segment as shown in FIGS. 12, 14, 16, and 18. The switching method information of the video data (program content) which is described in the table format and has received the transmission request is transmitted from the transmission unit 53 to the requesting video receiving apparatus together with the segment delimiter information.

  Next, a video receiving apparatus (data receiving apparatus) that controls the viewing environment illumination in response to the segment delimiter information and delimiter method information sent from the external server apparatus will be described. As shown in FIG. 21, the video receiving apparatus in the present embodiment receives and demodulates broadcast data input from a transmission path, and performs error correction, and receives video from the output data of the receiving unit 61. A data separation unit 62 that separates and extracts each of the video data output to the display device 36 and the audio data output to the audio reproduction device 37, and a transmission request for switching method information corresponding to the video data (content) to be displayed are communicated A transmission unit 67 that transmits to an external server device (data transmission device) via a network, and a reception unit 68 that receives the switching method information requested for transmission from the external server device via a communication network together with segment delimiter information. I have.

  Further, the segment delimiter information and the switching method information received by the receiving unit 68 are temporarily stored. The start time TC (time code) included in the segment delimiter information and the TC ( The time code), and when they match, the CPU 66 outputs the corresponding switching method information, the switching method information from the CPU 66, and the feature amount of the video data and the audio data. An illumination control data generation unit 65 that generates control data (RGB data) and outputs the control data (RGB data) to the illumination device 38 that illuminates the viewing environment space.

  That is, the CPU 66 compares the start time code of each segment of the switching method information storage table received from the external server device and stored therein with the time code of the video data input to the illumination control data generation unit 65. When they match, the switching method information corresponding to the segment is output to the illumination control data generation unit 65. The illumination control data generation unit 65 generates and outputs illumination control data (RGB data) suitable for displaying each frame according to the switching method information.

  As a result, even when the switching method information is not added to the broadcast data, the switching method information corresponding to the display video data (program content) is obtained from the external server device, and the viewing is performed based on the switching method information. Since it is configured to control the environmental lighting, as in the first and second embodiments described above, it is possible to change the illumination light in accordance with the screen switching technique such as fade and dissolve included in the video data, Appropriate lighting control can be performed according to the intention of the video producer.

  In the present embodiment, the segment delimiter information and the switching method information are transmitted to and received from the external server device, and the illumination estimation process based on only the video feature amount / audio feature amount of each frame is described. However, as in the first and second embodiments, in addition to segment delimiter information and switching method information, scene setting information, shooting illumination information, and the like can be transmitted and received simultaneously, and various illumination estimation processes can be performed. Needless to say, it may be a simple configuration.

  The viewing environment control apparatus, method, and viewing environment control system of the present invention can be realized by various embodiments without departing from the gist of the present invention described above. For example, the environmental lighting control device may be provided in the video display device, and it is needless to say that an external lighting device may be controlled based on various information included in the input video data. Yes.

  Furthermore, the segment delimiter information and the switching method information described above are not limited to the case of separation / acquisition from broadcast data or the case of acquisition from an external server device. For example, an external device (DVD player, Blu-ray disc player, etc.) When displaying reproduced video information, segment delimiter information and illumination control type information added to the media medium may be read out and used.

It is a block diagram which shows the principal part schematic structure of the video transmission apparatus in the viewing-and-listening environment control system which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the example of an output bit stream of the video transmission apparatus in the viewing-and-listening environment control system which concerns on 1st Embodiment of this invention. It is a figure for demonstrating an example of the data structure of the additional data in the viewing-and-listening environment control system which concerns on 1st Embodiment of this invention. It is a figure for demonstrating the component of an image | video. It is explanatory drawing which shows an example of the scene break information in the viewing-and-listening environment control system which concerns on 1st Embodiment of this invention. It is a figure for demonstrating the switching method of a screen. It is a figure for demonstrating the switching method of a screen. It is a figure for demonstrating the switching method of a screen. It is a block diagram which shows the principal part schematic structure of the video receiver in the viewing-and-listening environment control system which concerns on 1st Embodiment of this invention. It is a block diagram which shows schematic structure of the illumination control data generation part in FIG. It is a flowchart which shows the operation | movement flow of the switching control process part in the viewing-and-listening environment control system which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows an example of the segment delimiter information in the viewing environment control system which concerns on 1st Embodiment of this invention, and switching method information. It is explanatory drawing which shows an example of the illumination control data generation process by the viewing-and-listening environment control system which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the other example of the segment delimiter information in the viewing environment control system which concerns on 1st Embodiment of this invention, and switching method information. It is explanatory drawing which shows the other example of the illumination control data generation process by the viewing-and-listening environment control system which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows an example of the segment delimiter information in the viewing environment control system which concerns on 2nd Embodiment of this invention, and switching method information. It is explanatory drawing which shows an example of the illumination control data generation process by the viewing environment control system which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the other example of the segment delimiter information in the viewing environment control system which concerns on 2nd Embodiment of this invention, and switching method information. It is explanatory drawing which shows the other example of the illumination control data generation process by the viewing environment control system which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the principal part schematic structure of the external server apparatus in the viewing-and-listening environment control system which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the principal part schematic structure of the video receiver in the viewing-and-listening environment control system which concerns on 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Data multiplexing part 2 ... Transmission part 31, 61 ... Reception part 32, 62 ... Data separation part 33, 34 ... Delay generation part 35, 65 ... Illumination control data generation part 36 ... Video display device 37 ... Audio reproduction device 38 ... Illumination device 51... Reception unit 52... Data storage unit 53.
67 ... Transmitter 68 ... Receiver

Claims (13)

In a data transmission apparatus for transmitting video data composed of one or more frames,
The video data is divided into segments composed of an arbitrary number of one or more frames, segment delimiter information indicating the start time and / or section of each segment, and video switching method information indicating a video switching method between the segments. Is added to the video data in units of segments and transmitted.   The data transmission apparatus according to claim 1, wherein the video switching method information includes information regarding a video switching method at a head portion of each segment.   The data transmission apparatus according to claim 2, wherein the video switching method information includes information related to a video switching section in a head portion of each segment.   4. The data transmission apparatus according to claim 1, wherein the video switching method information includes information related to a video switching method at a tail portion of each segment.   5. The data transmission apparatus according to claim 4, wherein the video switching method information includes information related to a video switching section at the end portion of each segment.   6. The data according to claim 2, wherein the information on the video switching method is information for determining at least one of cut-in, cut-out, fade-in, fade-out, and dissolve. Transmitter device. Video data to be displayed on the display device, segment delimiter information indicating the start time and / or section of a segment obtained by dividing the video data into an arbitrary number of frames of 1 or more, and the segment data added to the video data Receiving means for receiving video switching method information indicating a video switching method between the segments;
A viewing environment control device comprising: a control unit that controls illumination light of an illumination device installed around the display device based on the segment delimiter information and video switching method information.   8. The viewing environment control apparatus according to claim 7, wherein the control unit switches and controls illumination light of the illumination apparatus in units of segments.   The viewing environment control apparatus according to claim 7 or 8, wherein the control unit controls illumination light of the illumination apparatus using a feature amount of the video data.   10. A viewing environment control system comprising: the viewing environment control device according to claim 7; and a lighting device whose viewing environment illumination light is controlled by the viewing environment control device. In a data transmission method for transmitting video data composed of one or more frames,
The video data is divided into segments composed of an arbitrary number of one or more frames, segment delimiter information indicating the start time and / or section of each segment, and video switching method information indicating a video switching method between the segments. Is added to the video data in units of segments and transmitted.   In response to a request from the outside, segment delimiter information indicating the start time and / or section of a segment obtained by dividing video data into one or more arbitrary frames, and video switching method information indicating a video switching method between the segments Is added to the video data in units of segments and transmitted. Video data to be displayed on the display device, segment delimiter information indicating the start time and / or section of a segment obtained by dividing the video data into an arbitrary number of frames of 1 or more, and the segment data added to the video data Receiving video switching method information indicating a video switching method between the segments;
A viewing environment control method, comprising: controlling illumination light of an illumination device installed around the display device based on the segment delimiter information and video switching method information.