KR102348089B1 - Lumination control device and control methid thereof - Google Patents

Abstract

The present invention utilizes the key data for realizing the brightness expression characteristics of each reproduction screen in HDR technology to control the lighting system of multiple lights arranged for the viewing environment, so that the lighting of the lighting system can achieve brightness expression for each reproduction screen of content and It relates to a lighting control device realizing a technology for finely controlling to be interlocked, and an operation method of the lighting control device.

Description

A lighting control device and an operation method of the lighting control device {LUMINATION CONTROL DEVICE AND CONTROL METHID THEREOF}

The present invention relates to a technology related to a media viewing environment for viewing media according to content reproduction, and more particularly, to a technology for providing a media viewing intensive environment capable of focusing more on media viewing.

Recently, as digital-based digital television technology has been commercialized, it has become possible to provide various contents through a network such as the Internet connected to each home, and IPTV (Internet Protocol Television) service is a representative example.

In the IPTV service, various services can be provided to IPTV service subscribers through a set-top box installed in a designated space such as a home. A content playback service that allows viewers to watch is probably the most basic service.

The content reproduction service may be divided into a service for reproducing real-time content provided from a service server (not shown) providing an IPTV service and a service for reproducing video on demand (VoD) content.

On the other hand, due to the development of communication technology for the picture quality of display devices and IPTV service, the technology to express the picture quality of media, especially the playback screen, has evolved from HD (High Definition) technology to UHD (Ultra High Definition) 4K, 8K technology. Furthermore, it is evolving into HDR (High Dynamic Range) technology.

One of the things that HDR technology has evolved from previous HD/UHD 4K and 8K technologies is that it can improve viewing quality by expressing bright areas in the playback scene brighter and dark areas darker (hereafter referred to as the , characteristic of brightness expression for each playback screen).

On the other hand, recently, in a media viewing environment in which media is viewed according to content reproduction, efforts have been made to control the lighting around the display device to focus more on media viewing.

Accordingly, in the present invention, in a media viewing environment in which media is viewed according to content playback, HDR technology utilizes the brightness expression feature for each playback screen in which bright areas in the playback scene are brighter and dark areas are darker. , we would like to propose a new technology to provide a media viewing intensive environment that can focus more on media viewing.

The present invention was created in consideration of the above circumstances, and the purpose of the present invention is to utilize the brightness expression characteristics for each playback screen of the HDR technology, and a media viewing intensive environment that can focus more on media viewing To provide technology to realize

A lighting control device according to an embodiment of the present invention for achieving the above object, the metadata check unit for checking the metadata related to the screen brightness of a specific content; a lighting control unit generating lighting control data for controlling a lighting system implemented for a display device in which the specific content is reproduced, based on the metadata; and a transmitting unit that transmits the lighting control data to the lighting system so that, when the specific content is reproduced, the lighting controlled according to the lighting control data in the lighting system is linked with the screen brightness of the specific content.

Specifically, the lighting system may include a plurality of lights arranged to have three-dimensional coordinates with the display device as an origin.

Specifically, the metadata includes brightness information for each two-dimensional coordinate region in a playback screen for each playback screen of the specific content, and the lighting control data includes, for each playback screen of the specific content, the plurality of lights. It may have a structure indicating lighting level information for each three-dimensional arrangement coordinate for each.

Specifically, each of the three-dimensional arrangement coordinates for each of the plurality of lights may be mapped to at least one of the two-dimensional coordinate regions.

Specifically, the metadata includes brightness information for each two-dimensional coordinate region in a playback screen for each playback screen of the specific content, and the lighting controller includes the two-dimensional coordinate region for each playback screen of the specific content. Based on the star brightness information and the external environment information, it is possible to determine the lighting level for each light in the lighting system.

Specifically, the external environment information includes spatial information on a space in which the display device is installed, time information on a time when the specific content is played on the display device, and weather information at a time point when the specific content is played on the display device. may include at least one of

Specifically, the lighting control unit, for each reproduction screen of the specific content, based on at least one of the brightness difference between the brightest coordinate area and the darkest coordinate area among the two-dimensional coordinate area and the external environment information, each in the lighting system It is possible to determine the average illumination level for the illumination.

Specifically, the lighting controller may include, for each reproduction screen of the specific content, based on the average lighting level for each lighting in the lighting system, based on at least one of brightness information for each two-dimensional coordinate area and the external environment information. The level value can be determined.

To achieve the above object, there is provided a method of operating a lighting control device according to an embodiment of the present invention, comprising: a metadata checking step of checking metadata related to screen brightness of a specific content; a data generation step of generating lighting control data for controlling a lighting system implemented for a display device in which the specific content is reproduced, based on the metadata; and a data transfer step of transmitting the lighting control data to the lighting system so that, when the specific content is reproduced, the lighting controlled according to the lighting control data in the lighting system is linked with the screen brightness of the specific content.

Specifically, the lighting system may include a plurality of lights arranged to have three-dimensional coordinates with the display device as an origin.

Specifically, the metadata includes brightness information for each two-dimensional coordinate region in a playback screen for each playback screen of the specific content, and the lighting control data includes, for each playback screen of the specific content, the plurality of lights. It may have a structure indicating lighting level information for each three-dimensional arrangement coordinate for each.

Specifically, the data generation step may determine the lighting level for each of the three-dimensional arrangement coordinates for each of the plurality of lights based on the brightness information for each two-dimensional coordinate area and the external environment information for each reproduction screen of the specific content. .

Accordingly, according to the lighting control device and the method of operating the lighting control device according to the present invention, by controlling the lighting of the lighting system by utilizing the brightness expression feature for each playback screen (Scene) of the HDR technology, the lighting of the lighting system is displayed on the playback screen It can be precisely controlled to be linked with the brightness expression of

Accordingly, according to the present invention, it is possible to expect an effect of providing a media viewing intensive environment in which the lighting of the lighting system is controlled in detail so as to be linked with the brightness expression of the playback screen.

1 is a configuration diagram schematically illustrating a media viewing environment to which a lighting control device according to an embodiment of the present invention is applied.
FIG. 2 is an exemplary view illustrating a lighting arrangement of a lighting system in a media viewing environment according to an embodiment of the present invention.
3 is a schematic configuration diagram of a lighting control device according to an embodiment of the present invention.
4 is a flowchart for explaining a method of operating a lighting control device according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is an exemplary diagram illustrating a media viewing environment to which a lighting control device according to an embodiment of the present invention is applied.

As shown in FIG. 1 , the media viewing environment according to an embodiment of the present invention is a set-top box that outputs content provided from a service server (not shown) that provides an IPTV service and plays it on the display device 10 . (20) may be included.

Furthermore, the media viewing environment according to an embodiment of the present invention is configured to further include a lighting system 30 provided for the IPTV service subscriber, that is, the viewer 1 to view media according to content reproduction.

The set-top box 20 refers to a device installed in a specific place (eg, home) to receive an IPTV service, and is provided from a service server (not shown) through a wireless repeater (not shown) connected to the set-top box itself. Receives and outputs various contents (eg, broadcast) so that they can be reproduced on the display device 10 .

A wireless repeater (eg, a router) refers to a device for providing an Internet access environment to the set-top box 20 , and is connected to the set-top box 20 by wire, as well as a user terminal (eg, smart) located within the coverage area. It is also possible to provide an Internet access environment based on wireless communication for phones, etc.).

As described above, in a media viewing environment in which an IPTV service is provided according to an embodiment of the present invention, an IPTV service subscriber, that is, a viewer, can search for and play a desired content and view media according to the content reproduction based on the above-described configuration.

On the other hand, due to the development of communication technology for the picture quality of display devices and IPTV service, the technology to express the picture quality of media, especially the playback screen, has evolved from HD (High Definition) technology to UHD (Ultra High Definition) 4K, 8K technology. Furthermore, it is evolving into HDR (High Dynamic Range) technology.

One of the things that HDR technology has evolved from previous HD/UHD 4K and 8K technologies is that it can improve viewing quality by expressing bright areas in the playback scene brighter and dark areas darker (hereafter referred to as the , characteristic of brightness expression for each playback screen).

On the other hand, recently, in a media viewing environment in which media is viewed according to content reproduction, efforts have been made to control the lighting around the display device to focus more on media viewing.

Accordingly, in the present invention, a new technology for providing a media viewing intensive environment that can focus more on media viewing by utilizing the brightness expression feature of each playback screen of the HDR technology in a media viewing environment for viewing media according to content playback. I would like to suggest

* Specifically, the present invention proposes a lighting control device 100 that realizes a technology for providing a media viewing intensive environment that can focus more on media viewing by utilizing the brightness expression characteristics of each playback screen of the HDR technology. .

Hereinafter, the configuration of the lighting control apparatus 100 according to an embodiment of the present invention will be described in more detail with reference to FIG. 3 .

3 shows the configuration of the lighting control apparatus 100 according to an embodiment of the present invention.

As shown in FIG. 3 , the lighting control device 100 according to an embodiment of the present invention may have a configuration including a metadata check unit 110 , a lighting control unit 120 , and a transmission unit 130 . have.

Furthermore, the lighting control apparatus 100 according to an embodiment of the present invention may further include an external environment information confirmation unit 140 .

And, the lighting control device 100, in addition to the above-described configuration, may further include a configuration of the communication unit 150 in charge of the communication function with the set-top box 20 and the lighting system (30).

All or at least part of the configuration of the lighting control device 100 may be implemented in the form of a hardware module or a software module, or may be implemented in a form in which a hardware module and a software module are combined.

Here, the software module may be understood as, for example, a command executed by a processor for controlling operations within the lighting control device 100, and these commands may have a form mounted in a memory within the lighting control device 100. will be.

After all, the lighting control device 100 according to an embodiment of the present invention provides a media viewing intensive environment that can focus more on media viewing by utilizing the brightness expression characteristics for each playback screen of the HDR technology through the above-described configuration. In the following, each configuration in the lighting control device 100 for realizing this will be described in more detail.

The metadata check unit 110 is responsible for checking metadata related to screen brightness of specific content.

Here, the specific content means content that is configured in a form having metadata related to screen brightness, and is reproduced on the display device 10 in real time or at an arbitrary selected time.

Such specific content may be, for example, content provided from a service server (not shown) that provides an IPTV service, and in this case, may be real-time content (eg, a broadcast program) provided through a real-time broadcasting service, or VoD It may be VoD content (eg, drama, movie, etc.) provided through (Video on Demand) service.

Alternatively, specific content is stored in a device such as the set-top box 20 or the display device 10 or a separate storage device (not shown) regardless of the IPTV service, and then called by the set-top box 20 or the display device 10 . and content to be played (eg, drama, movie, etc.).

Accordingly, the metadata check unit 110 may obtain and confirm metadata related to the screen brightness of the specific content from the set-top box 20 or the device in which the specific content is stored.

For example, if the specific content is content (eg, VoD content_movie) provided through an IPTV service, the metadata check unit 110 transmits the content (eg, VoD content_movie) to a service server (not shown). ), it is possible to obtain and check metadata related to the screen brightness of content (eg, VoD content_movie) by interworking with the set-top box 20 received from it.

Here, it is preferable that the metadata checked in relation to the specific content include brightness information for each two-dimensional coordinate region in the playback screen for each playback screen of the specific content.

As mentioned above, in the present invention, in order to improve the viewing quality in HDR technology, bright areas in the playback scene are expressed more brightly and dark areas are expressed darker, that is, brightness expression characteristics for each playback screen are utilized. is a technique to

Accordingly, specific content may include data in a format defined in HDR technology as metadata related to screen brightness, that is, core data for realizing brightness expression characteristics for each reproduction screen in HDR technology.

As an example of the format, the metadata may include brightness information for each playback screen of specific content and for each two-dimensional coordinate area within the playback screen.

1 , it can be assumed that a content (eg, VoD content_movie) provided through an IPTV service is played on the display device 10 as specific content.

In this case, in the metadata of the content (eg, VoD content_movie), the entire playback section of the content (eg, VoD content_movie) is divided into N (eg, 500) playback screens, and the playback screen Assuming that the coordinate area within (Scene) is defined as M (eg, 6/a,b,c,d,e,f), 2 for each N (eg, 500) playback screen (Scene) It may include brightness information for each dimensional coordinate area (a, b, c, d, e, f).

Accordingly, under the assumption shown in FIG. 1 , when content (eg, VoD content_movie) is played on the display device 10, the content (eg, VoD content_movie) is based on the metadata of the content (eg, VoD content_movie). Each of the two-dimensional coordinate regions (a, b, c, d, e, f) in the playback screen (Scene) for each playback screen (Scene) of the content_movie) is expressed brighter the brighter the region is according to the brightness information of the corresponding coordinate region. And the darker the area, the darker it can be expressed.

Of course, the number and type of division of the 2D coordinate area in the scene shown in FIG. 1 is only an example, and the number and type of division of the 2D coordinate area within the scene vary. Modification can be implemented/implemented, and even a two-dimensional coordinate area in a playback scene can be divided into a single pixel unit.

The lighting control unit 120 is a lighting control for controlling the lighting system 30 implemented for the display device 20 in which the specific content is reproduced, based on the metadata of the specific content checked by the metadata check unit 110 . Responsible for generating data.

In this case, the lighting control unit 120 may generate related lighting control data at a time point when specific content is reproduced on the display device 20 , and control related lighting regardless of a time point when specific content is reproduced on the display device 20 . You can also create data in advance.

As mentioned above, the media viewing environment according to an embodiment of the present invention further includes a lighting system 30 provided to assist the viewer 1 in viewing.

In this case, the lighting system 30 preferably includes a plurality of lights disposed at different positions, and more specifically, a plurality of lights disposed to have three-dimensional coordinates with the display device 10 as the origin. It is preferable to include

As an example, FIG. 2 shows a lighting arrangement of a lighting system 30 according to an embodiment of the present invention.

As shown in FIG. 3 , a plurality of lights (eg, lights 1, 2, ..., 6) in the lighting system 30 sets the display device 10 to the origin (x, y, z = 0, 0). ,0) and can be arranged in a circle at different positions.

Accordingly, a plurality of lights (eg, lights 1, 2, ..., 6) in the lighting system 30, with the display device 10 as the origin (x, y, z = 0, 0, 0), It can be expressed as three-dimensional arrangement coordinates according to the circular arrangement.

Of course, a plurality of lights (eg, lights 1, 2, ..., 6) in the lighting system 30 may be expressed as angular coordinates according to a circular arrangement with the display device 10 as the origin, for example, For example, in the case of illumination 2, it can be expressed as angular coordinate θ2.

On the other hand, the arrangement number and arrangement form of a plurality of lights in the lighting system 30 shown in FIG. 3 is only an example, and the arrangement number and arrangement form may be variously modified and implemented/implemented.

Accordingly, the lighting control unit 120, based on the metadata of the specific content confirmed by the metadata confirmation unit 110, a plurality of lights in the lighting system 30 (eg, lighting 1, 2, ..., 6) It is possible to generate lighting control data for controlling each.

At this time, the lighting control data generated by the lighting control unit 120 is three-dimensional for each of a plurality of lights (eg, lights 1, 2, ..., 6) in the lighting system 30 for each reproduction screen of a specific content. It is preferable to have a structure (format) indicating the lighting level information for each arrangement coordinate.

To this end, each of the three-dimensional arrangement coordinates for each of a plurality of lights (eg, lights 1, 2, ..., 6) in the lighting system 30 includes at least one of the two-dimensional coordinate areas in the reproduction screen of the specific content and It is desirable to be mapped.

Accordingly, the lighting control unit 120 utilizes the metadata of specific content, that is, core data for realizing the brightness expression feature for each playback screen in HDR technology, and uses multiple lights (eg: Lighting 1, 2, ..., 6) by determining the lighting level for each of the 3D arrangement coordinates of the corresponding lighting based on the brightness information of the 2D coordinate information in the playback screen that is mapped, lighting for each playback screen of specific content It is possible to generate lighting control data representing lighting level information for each three-dimensional arrangement coordinate for each of a plurality of lights (eg, lights 1, 2, ..., 6) in the system 30 .

Hereinafter, a plurality of lights in the lighting system 30 (eg, lights 1, 2, ..., 6 ) The process of determining the lighting level for each will be described in detail.

According to the first embodiment, the lighting control unit 120 controls the brightness of a specific content, for example, for each content (eg, VoD content_movie) playback screen, and for each two-dimensional coordinate region within a playback screen for content (eg VoD content_movie). Based on the information and external environment information, it is possible to determine the lighting level for each lighting (eg, lighting 1, 2, ..., 6) in the lighting system 30 .

To this end, the external environment information confirmation unit 140 acquires and confirms necessary external environment information at the time the lighting control unit 120 generates lighting control data for specific content, for example, content (eg, VoD content_movie). responsible for the function

At this time, the external environment information includes spatial information about the space in which the display device 10 is installed, time information about a time at which a specific content is reproduced on the display device 10 , and a time point at which the specific content is reproduced on the display device 10 . It may include at least one of weather information.

That is, the external environment information confirmation unit 140 is triggered by the operation of generating lighting control data for a specific content, for example, content (eg, VoD content_movie) in the lighting control unit 120 , the display device 10 ), spatial information on whether the installed space is indoors or outdoors, and whether specific content (eg, VoD content_movie) is played on the display device 10 is morning, afternoon, night, or dawn. information, whether the weather at the time specific content (eg, VoD content_movie) is reproduced on the display device 10 is clear or cloudy, or rain/snow, a pre-installed sensor or pre-registered It can be acquired and confirmed by linking with a DB or server of a related organization (eg, Meteorological Administration).

In this case, when the lighting control unit 120 generates lighting control data related to specific content, for example, content (eg, VoD content_movie), the content (eg, VoD content_movie) is reproduced on the display device 10 . It is preferable to assume that it is a starting point.

Accordingly, the lighting controller 120 controls the brightness information and external environment information for each two-dimensional coordinate area within the playback screen of a specific content, for example, content (eg, VoD content_movie), for each playback screen of the content (eg, VoD content_movie). (Example: spatial information_indoor, time information_afternoon, weather information_sunshine, etc.) It may be determined according to a preset policy.

That is, the lighting controller 120 corresponds to the lighting level (value) for each of a plurality of lights (eg, lighting 1, 2, ..., 6) for each playback screen of the content (eg, VoD content_movie). It can be determined based on brightness information for each two-dimensional coordinate area in the corresponding reproduction screen and external environment information (eg, spatial information_indoor, time information_afternoon, weather information_sunshine, etc.) mapped with the 3D arrangement coordinates of lighting.

According to the second embodiment, the lighting controller 120 controls the brightness between the brightest coordinate region and the darkest coordinate region among the two-dimensional coordinate regions in the playback screen for each playback screen of specific content, for example, content (eg, VoD content_movie). Based on at least one of the difference and external environment information, it is possible to determine an average illumination level for each light (eg, lights 1, 2, ..., 6) in the lighting system 30 .

For example, the lighting controller 120 compares the brightness between the brightest coordinate region and the darkest coordinate region among the two-dimensional coordinate regions in the playback screen for each playback screen of the content (eg, VoD content_movie), and the difference It is possible to check whether there is a large difference above the threshold value or a small difference below the threshold value, or how much difference there is based on each threshold value that is divided step by step.

Accordingly, the lighting controller 120, for each playback screen of the content (eg, VoD content_movie), based on the difference in brightness between the brightest coordinate region and the darkest coordinate region among the two-dimensional coordinate regions in the playback screen, the lighting system ( 30) The average lighting level for each lighting (eg, lighting 1, 2, ..., 6) may be determined primarily according to a preset policy.

Alternatively, the lighting control unit 120, for each playback screen of the content (eg, VoD content_movie), external environment information (eg, spatial information_indoor, time information_afternoon, weather information_sunshine, etc.) based on the lighting system (30) The average lighting level for each lighting (eg, lighting 1, 2, ..., 6) may be determined primarily according to a preset policy.

That is, in the present invention, for each playback screen of content (eg, VoD content_movie), the reference lighting level to be applied on average to each lighting (eg, lighting 1, 2, ..., 6) in the lighting system 30 . (Average lighting level) is primarily determined according to the difference in brightness within the playback screen or the external environment.

Then, the lighting control unit 120, the lighting system 30 on the basis of at least one of the specific content, for example, the content (eg, VoD content_movie) playback screen, brightness information for each two-dimensional coordinate area in the playback screen, and external environment information. ) in the light (eg, lights 1, 2, ..., 6) based on the average light level may be determined.

For example, the lighting control unit 120, for each playback screen of the content (eg, VoD content_movie), brightness information for each two-dimensional coordinate area within the playback screen and external environment information (eg, spatial information_indoor, time information) Based on _afternoon, weather information_sunshine, etc.), the offset to be adjusted based on the average lighting level for each light (eg, lights 1, 2,..., 6) in the lighting system 30 is adjusted according to a preset policy. can decide

Accordingly, the lighting controller 120 determines the average lighting for each lighting (eg, lighting 1, 2, ..., 6) in the lighting system 30 for each reproduction screen of the contents (eg, VoD contents_movie). Level + offset may be secondarily (finally) determined as the lighting level value based on the average lighting level.

That is, the lighting control unit 120, for each playback screen of the content (eg, VoD content_movie), the lighting level value (average lighting level) for each of a plurality of lights (eg, lighting 1, 2, ..., 6) + offset) to the brightness information for each 2D coordinate area in the playback screen that is mapped with the 3D arrangement coordinates of the lighting and external environment information (eg, spatial information_indoor, time information_afternoon, weather information_sunshine, etc.) A final decision can be made based on

Accordingly, the lighting control unit 120, according to the above-described first or second embodiment, for each playback screen (Scene) of a specific content, a plurality of lights (eg, lights 1, 2, ..., 6), respectively If the lighting level (value) for the light is determined based on the brightness information of the 2D coordinate information in the reproduction screen mapped with the 3D arrangement coordinates of the corresponding lighting, the lighting system 30 for each reproduction screen of a specific content using the determination result It is possible to generate lighting control data representing lighting level information for each three-dimensional arrangement coordinate for each of a plurality of lights (eg, lights 1, 2, ..., 6).

The transmission unit 130 transmits the lighting control data generated by the lighting control unit 120 to the lighting system 30 .

The lighting system 30 that receives the lighting control data from the lighting control device 100 of the present invention will control each of a plurality of lights (eg, lights 1, 2, ..., 6) according to the lighting control data. .

If the lighting control device 100 generates and transmits lighting control data when a specific content is reproduced on the display device 20, the lighting system 30 immediately receives the lighting control data according to the lighting control data. By performing lighting control, lighting control synchronized with reproduction in the display device 20 will be possible.

On the other hand, if the lighting control device 100 generates related lighting control data in advance regardless of the timing at which the specific content is reproduced on the display device 20 , the lighting control device 100 determines that the specific content is displayed on the display device 20 . When the lighting control data is reproduced at the time of reproduction, the external environment information at the time of generation of the lighting control data and the external environment information at the time of reproduction are compared and if they are the same, the lighting control data is transmitted as it is, and the lighting system 30 receives the lighting control data immediately after receiving the lighting control data. By performing the lighting control according to the, it will be possible to control the lighting synchronized with the reproduction in the display device (20).

If, in the lighting control device 100 , the related lighting control data is generated in advance regardless of the point in time when the specific content is reproduced on the display device 20 , the lighting control device 100 determines that the specific content is displayed on the display device 20 . At the time of reproduction, the external environment information at the time of generation of lighting control data and the external environment information at the time of reproduction are compared, and if they are not the same, the lighting control data is corrected and transmitted based on the external environment information at the time of reproduction, and the lighting system 30 Upon receiving the lighting control data, the lighting control according to the lighting control data is performed, so that the lighting control synchronized with the reproduction in the display device 20 will be possible.

On the other hand, the functions of all or some of the above-described metadata confirmation unit 110 , lighting control unit 120 , delivery unit 130 , external environment information confirmation unit 140 or some of them are to the lighting control device 100 . It may be implemented in the form of a combined computer program.

As described above, the lighting control device 100 according to an embodiment of the present invention is a key for realizing the brightness information for each area within the reproduction screen for each reproduction screen of the content, that is, the brightness expression feature for each reproduction screen in HDR technology. By controlling the lighting system of multiple lights arranged for the viewing environment by using the data, it is possible to precisely control the lighting of the lighting system to be linked with the brightness expression for each reproduction screen of the content.

Accordingly, according to the present invention, it is possible to expect the effect of providing a media viewing intensive environment in which the lighting of the lighting system is controlled in detail so as to be linked with the brightness expression for each reproduction screen of the content.

Hereinafter, with reference to FIG. 4, a method of operating a lighting control device according to an embodiment of the present invention will be described.

For convenience of description, the description will be made with reference to the media viewing environment shown in FIG. 1 .

According to the operating method of the lighting control device according to the embodiment of the present invention, the lighting control device 100 checks the metadata related to the screen brightness of the specific content (S10).

For example, the lighting control apparatus 100 may obtain and confirm metadata related to the screen brightness of a specific content from the set-top box 20 or a device in which the specific content is stored (S10).

Here, the specific content means content that is configured in a form having metadata related to screen brightness, and is reproduced on the display device 10 in real time or at an arbitrary selected time.

In addition, it is preferable that the metadata checked in relation to the specific content include brightness information for each two-dimensional coordinate region in the playback screen for each playback screen of the specific content.

As mentioned above, in the present invention, in order to improve the viewing quality in HDR technology, bright areas in the playback scene are expressed more brightly and dark areas are expressed darker, that is, brightness expression characteristics for each playback screen are utilized. is a technique to

Accordingly, specific content may include data in a format defined in HDR technology as metadata related to screen brightness, that is, core data for realizing brightness expression characteristics for each reproduction screen in HDR technology.

As an example of the format, the metadata may include brightness information for each playback screen of specific content and for each two-dimensional coordinate area within the playback screen.

According to the method of operation of the lighting control device according to the embodiment of the present invention, the lighting control device 100 is implemented for the display device 20 in which the specific content is reproduced based on the metadata of the specific content checked in step S10. It generates lighting control data for controlling the lighting system 30 (S20 to S50).

At this time, the lighting control device 100 may generate related lighting control data at a time point at which specific content is reproduced on the display device 20 , and related lighting regardless of the time point at which specific content is reproduced on the display device 20 . Control data may be created in advance.

Specifically, the lighting system 30 preferably includes a plurality of lights disposed at different positions, and more specifically, a plurality of lights disposed to have three-dimensional coordinates with the display device 10 as the origin. It is desirable to include the lighting of

As an example, FIG. 2 shows a lighting arrangement of a lighting system 30 according to an embodiment of the present invention.

As shown in FIG. 3 , a plurality of lights (eg, lights 1, 2, ..., 6) in the lighting system 30 sets the display device 10 to the origin (x, y, z = 0, 0). ,0) and can be arranged in a circle at different positions.

Accordingly, a plurality of lights (eg, lights 1, 2, ..., 6) in the lighting system 30, with the display device 10 as the origin (x, y, z = 0, 0, 0), It can be expressed as three-dimensional arrangement coordinates according to the circular arrangement.

Of course, a plurality of lights (eg, lights 1, 2, ..., 6) in the lighting system 30 may be expressed as angular coordinates according to a circular arrangement with the display device 10 as the origin.

On the other hand, the arrangement number and arrangement form of a plurality of lights in the lighting system 30 shown in FIG. 3 is only an example, and the arrangement number and arrangement form may be variously modified and implemented/implemented.

According to an example, the lighting control device 100 determines whether specific content, for example, content (eg, VoD content_movie) is played, whether the space in which the display device 10 is installed is indoors or outdoors. spatial information on the display device 10 , time information on whether specific content (eg, VoD content_movie) is reproduced on the display device 10 is morning or afternoon, night or dawn, and specific content on the display device 10 . (Example: VoD content_movie) Whether the weather is sunny, cloudy, or raining/snowy at the time of playback, the weather information, etc., from a pre-installed sensor or a pre-registered DB or related organization (eg, Meteorological Administration) It can be obtained and confirmed by interworking with the server (S20).

And, the lighting control device 100, for each playback screen of specific content, for example, content (eg, VoD content_movie), the brightness difference between the brightest coordinate region and the darkest coordinate region among the two-dimensional coordinate regions in the playback screen and the external environment Based on at least one of the information, it is possible to determine an average illumination level for each illumination (eg, illumination 1, 2, ..., 6) in the illumination system 30 (S30).

For example, the lighting control device 100 compares the brightness between the brightest coordinate region and the darkest coordinate region among the two-dimensional coordinate regions in the playback screen for each playback screen of the content (eg, VoD content_movie), and the It can be checked whether the difference is a large difference above the threshold value, a small difference below the threshold value, or how much difference the difference is based on each threshold value that is divided in stages.

Accordingly, the lighting control device 100, for each playback screen of the content (eg, VoD content_movie), the lighting system based on the difference in brightness between the brightest coordinate region and the darkest coordinate region among the two-dimensional coordinate regions in the playback screen (30) The average lighting level for each lighting (eg, lighting 1, 2, ..., 6) may be determined primarily according to a preset policy.

Alternatively, the lighting control device 100 illuminates based on external environment information (eg, spatial information_indoor, time information_afternoon, weather information_sunshine, etc.) for each playback screen of the content (eg, VoD content_movie). The average lighting level for each lighting (eg, lighting 1, 2, ..., 6) in the system 30 may be primarily determined according to a preset policy.

That is, in the present invention, for each playback screen of content (eg, VoD content_movie), the reference lighting level to be applied on average to each lighting (eg, lighting 1, 2, ..., 6) in the lighting system 30 . (average lighting level) is primarily determined according to the difference in brightness in the corresponding playback screen or the external environment.

And, the lighting control device 100 is a lighting system (for example, VoD content_movie) based on at least one of brightness information and external environment information for each playback screen of a specific content, for example, a content (eg, VoD content_movie), a two-dimensional coordinate area within a playback screen. 30) It is possible to determine an illumination level value based on the average illumination level for each illumination (eg, illumination 1, 2, ..., 6) (S40).

For example, the lighting control device 100 may include brightness information and external environment information (eg, spatial information_indoor, time Based on information_afternoon, weather information_sunshine, etc.), the offset to be adjusted based on the average lighting level for each light (eg, lights 1, 2,..., 6) in the lighting system 30 is set in a preset policy. can be decided accordingly.

Accordingly, the lighting control device 100, for each playback screen of the content (eg, VoD content_movie), the average determined for each lighting (eg, lighting 1, 2, ..., 6) in the lighting system 30 The illumination level + offset may be secondarily (finally) determined as the illumination level value based on the average illumination level.

That is, the lighting control device 100, for each playback screen of the content (eg, VoD content_movie), the lighting level value (average lighting) for a plurality of lights (eg, lighting 1, 2, ..., 6) level + offset), brightness information for each 2D coordinate area in the playback screen that is mapped to the 3D arrangement coordinates of the corresponding lighting and external environment information (eg, spatial information_indoor, time information_afternoon, weather information_sunshine, etc.) A final decision can be made based on

Accordingly, the lighting control device 100 performs the above-described steps S30 and S40 to illuminate each of a plurality of lights (eg, lights 1, 2, ..., 6) for each playback screen (Scene) of a specific content. When the level (value) is determined based on the brightness information of the two-dimensional coordinate information in the reproduction screen mapped with the three-dimensional arrangement coordinates of the corresponding lighting, using the determination result, a plurality of It is possible to generate lighting control data indicating lighting level information for each three-dimensional arrangement coordinate for each of the lights (eg, lights 1, 2, ..., 6) (S50).

And, according to the operation method of the lighting control device according to the embodiment of the present invention, the lighting control device 100, transmits the lighting control data generated in step S50 to the lighting system 30 (S60).

The lighting system 30 that receives the lighting control data from the lighting control device 100 of the present invention will control each of a plurality of lights (eg, lights 1, 2, ..., 6) according to the lighting control data. .

As described above, according to the present invention, brightness information for each area within a playback screen for each playback screen of content, that is, core data for realizing a brightness expression characteristic for each playback screen in HDR technology, is utilized and arranged for a viewing environment. By controlling the lighting system of multiple lights, the lighting of the lighting system can be precisely controlled so that the lighting of the lighting system is linked with the brightness expression of each content playback screen.

Accordingly, according to the present invention, it is possible to expect the effect of providing a media viewing intensive environment in which the lighting of the lighting system is controlled in detail so as to be linked with the brightness expression for each reproduction screen of the content.

On the other hand, the functional operations and implementations of the subject matter described in this specification are implemented as digital electronic circuits, computer software, firmware, or hardware including the structures disclosed in this specification and structural equivalents thereof, or at least one of these It can be implemented by combining. Implementations of the subject matter described herein are one or more computer program products, ie one or more modules of computer program instructions encoded on a tangible program storage medium for controlling operation or execution by one or more computer program products, ie, a control system. can be implemented.

The computer readable medium may be a machine readable storage device, a machine readable storage substrate, a memory device, a composition of matter that affects a machine readable radio wave signal, or a combination of one or more thereof.

As used herein, the term “system” or “device” encompasses all devices, devices and machines for controlling data, including, for example, a programmable processor, a computer, or multiple processors or computers. The control system may include, in addition to hardware, code forming an execution environment for a computer program upon request, such as, for example, code constituting processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more thereof. .

A computer program (also known as a program, software, software application, script or code) may be written in any form of any programming language, including compiled or interpreted language or a priori or procedural language, and may be written as a stand-alone program or module; It can be deployed in any form, including components, subroutines, or other units suitable for use in a computer environment. A computer program does not necessarily correspond to a file in a file system. A program may be in a single file provided to the requested program, or in multiple interacting files (eg, files that store one or more modules, subprograms, or portions of code), or portions of files that hold other programs or data. (eg, one or more scripts stored within a markup language document). The computer program may be deployed to be executed on a single computer or multiple computers located at one site or distributed over a plurality of sites and interconnected by a communication network.

On the other hand, computer-readable media suitable for storing computer program instructions and data include, for example, semiconductor memory devices such as EPROMs, EEPROMs and flash memory devices, such as magnetic disks such as internal hard disks or external disks, magneto-optical disks and CDs. -Can include all types of non-volatile memory, media and memory devices, including ROM and DVD-ROM disks. The processor and memory may be supplemented by, or integrated into, special purpose logic circuitry.

An implementation of the subject matter described herein may include a backend component, such as a data server, or a middleware component, such as an application server, or a web browser or graphical user, such as a user capable of interacting with an implementation of the subject matter described herein. It may be implemented in a front-end component, such as a client computer having an interface, or in a computing system including any combination of one or more of such back-end, middleware, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication, such as, for example, a communication network.

While this specification contains numerous specific implementation details, they should not be construed as limitations on the scope of any invention or claim, but rather as descriptions of features that may be specific to particular embodiments of particular inventions. should be understood Likewise, certain features that are described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments, either individually or in any suitable subcombination. Furthermore, although features operate in a particular combination and may be initially depicted as claimed as such, one or more features from a claimed combination may in some cases be excluded from the combination, the claimed combination being a sub-combination. or a variant of a sub-combination.

Also, although operations are depicted in the drawings in a specific order in this specification, it is not to be understood that such operations must be performed in the specific order or sequential order shown or that all illustrated operations must be performed in order to achieve desirable results. Can not be done. In certain cases, multitasking and parallel processing may be advantageous. Further, the separation of the various system components of the above-described embodiments should not be construed as requiring such separation in all embodiments, and the program components and systems described may generally be integrated together into a single software product or packaged into multiple software products. It should be understood that

As such, this specification is not intended to limit the invention to the specific terminology presented. Accordingly, although the present invention has been described in detail with reference to the above-described examples, those skilled in the art can make modifications, changes, and modifications to the examples without departing from the scope of the present invention. The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

According to the lighting control device and the method of operation of the lighting control device according to an embodiment of the present invention, the lighting of multiple lights arranged for the viewing environment by utilizing the core data for realizing the brightness expression characteristics for each reproduction screen in HDR technology In terms of presenting a technology to control the system in detail so that it is linked with the brightness expression of each content playback screen, the possibility of marketing or sales of the applied device, not just the use of the related technology, as it goes beyond the limits of existing technology Not only is it sufficient, but it is an invention with industrial applicability because it can be practically and clearly implemented.

100: lighting control device
110: metadata confirmation unit 120: lighting control unit
130: transfer unit 140: external environment information confirmation unit

Claims (4)

a metadata check unit for checking metadata related to screen brightness of specific content;
a lighting control unit generating lighting control data for controlling a lighting system implemented for a display device in which the specific content is reproduced, based on the metadata; and
and a transmitting unit that transmits the lighting control data to the lighting system so that the lighting controlled according to the lighting control data in the lighting system is linked with the screen brightness of the specific content when the specific content is reproduced,
The lighting system is
It includes a plurality of lights arranged to have three-dimensional coordinates with the display device as the origin,
The metadata includes brightness information for each two-dimensional coordinate area in the playback screen for each playback screen of the specific content,
The lighting control data is
For each reproduction screen of the specific content, it is a structure indicating lighting level information for each three-dimensional arrangement coordinate for each of the plurality of lights,
The lighting control unit,
When the average illumination level is determined based on the difference in brightness between the brightest coordinate region and the darkest coordinate region among the two-dimensional coordinate regions for each reproduction screen of the specific content, the brightness of each of the two-dimensional coordinate regions for each light in the lighting system Lighting control device, characterized in that for determining the illumination level adjusted to the average illumination level according to the information. The method of claim 1,
Each of the three-dimensional arrangement coordinates for each of the plurality of lights, the lighting control device, characterized in that the mapping with at least one of the two-dimensional coordinate area. a metadata confirmation step of confirming metadata related to screen brightness of specific content;
a data generation step of generating lighting control data for controlling a lighting system implemented for a display device in which the specific content is reproduced, based on the metadata; and
A data delivery step of transmitting the lighting control data to the lighting system so that the lighting controlled according to the lighting control data in the lighting system is linked with the screen brightness of the specific content when the specific content is reproduced;
The lighting system is
It includes a plurality of lights arranged to have three-dimensional coordinates with the display device as the origin,
The metadata includes brightness information for each two-dimensional coordinate area in the playback screen for each playback screen of the specific content,
The lighting control data is
For each reproduction screen of the specific content, it is a structure indicating lighting level information for each three-dimensional arrangement coordinate for each of the plurality of lights,
The data generation step is
When the average illumination level is determined based on the difference in brightness between the brightest coordinate region and the darkest coordinate region among the two-dimensional coordinate regions for each reproduction screen of the specific content, the brightness of each of the two-dimensional coordinate regions for each light in the lighting system Method of operating a lighting control device, characterized in that determining the lighting level adjusted to the average lighting level according to the information. 4. The method of claim 3,
The data generation step is
Method of operation of a lighting control device, characterized in that for each reproduction screen of the specific content, determining the lighting level for each three-dimensional arrangement coordinate for each of the plurality of lights based on the brightness information for each two-dimensional coordinate area and external environment information .

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