JP2015037242A - Reception device, reception method, transmission device, and transmission method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to present a content without troubling a user.SOLUTION: A distance information acquisition unit acquires distance information indicating a distance from a current position of a user in a real space to a position of a target, and a reproduction control unit controls reproduction of a content arranged at a position of the target in an augmented reality space in accordance with the distance information, so that the content can be presented without troubling the user. The present technique can be applied to, for example, a wearable apparatus which a user can carry around by wearing it.

Description

  The present technology relates to a receiving device, a receiving method, a transmitting device, and a transmitting method, and in particular, a receiving device, a receiving method, a transmitting device, and a device that can present content without bothering a user. , Relating to the transmission method.

  In recent years, research on wearable computers that can be worn and carried by users has been conducted (see, for example, Patent Document 1). Further, a technique called augmented reality (AR) that superimposes virtual content on an object in real space and presents it to a user has attracted attention (see, for example, Patent Document 2).

JP 2011-28763 A JP 2013-92964 A

  By the way, there is a request to apply AR technology to a wearable computer and to reproduce the virtual content and to present it superimposed on the object in the real space for the user wearing the wearable computer. Compared to conventional information terminals, there are more restrictions on the operation system, so it is assumed that the user's operation becomes complicated at the time of content reproduction.

  However, at present, a technical method for reproducing and presenting content to a user in a wearable computer has not been established.

  The present technology has been made in view of such a situation, and allows a wearable computer to present content without bothering a user.

  A receiving device according to a first aspect of the present technology includes a receiving unit that receives content arranged at a target position in augmented reality space, and a distance indicating a distance from the current position of the user to the target position in real space A distance information acquisition unit that acquires information, and a reproduction control unit that controls reproduction of the content according to the distance information.

  The reproduction control unit reproduces the content so as to change stepwise according to the distance information.

  The display unit further includes a display unit arranged to be positioned in front of the user's eyes and capable of displaying the information in a transparent or translucent state. Display content video.

  An audio output unit that outputs audio of the content being reproduced is further provided.

  It further comprises a channel information acquisition unit that acquires channel information for receiving an area broadcast that is a broadcast by an arbitrary segment, and the reception unit is transmitted from a transmitter that performs the area broadcast using the channel information. In a broadcast area where broadcast waves can be received, the content of the area broadcast is received.

  The distance information acquisition unit calculates the distance information using the current position of the user and the transmission point position of the transmitter included in the channel information.

  The distance information acquisition unit calculates the distance information using the current position of the user and the position of the target.

  The reproduction control unit reproduces the content so as to change stepwise according to the distance information with reference to the distance reference information included in the channel information.

  The reproduction control unit changes reproduction of at least one of the video and audio of the content stepwise.

  The reproduction control unit increases the sound volume of the content as the distance between the current position of the user and the position of the target approaches.

  It further includes a line-of-sight information acquisition unit that acquires line-of-sight information indicating the direction of the user's line of sight, and the reproduction control unit reproduces the content according to the line-of-sight information.

  Whether the playback control unit plays the video or audio of the content when the user's line of sight is in the target direction, and stops the video of the content when the user's line of sight is not in the target direction Or adjust the audio volume.

  The receiving device is a glasses-type wireless communication device having a pair of display units for left eye and right eye.

  The receiving device may be an independent device or an internal block constituting one device.

  The reception method according to the first aspect of the present technology is a reception method corresponding to the reception device according to the first aspect of the present technology described above.

  In the receiving device and the receiving method according to the first aspect of the present technology, content arranged at the target position in the augmented reality space is received, and the distance from the current position of the user to the target position in the real space is indicated. Distance information is acquired, and reproduction of the content is controlled in accordance with the distance information.

  The transmission device according to the second aspect of the present technology is channel information for a receiver to receive area broadcast content that is broadcast by an arbitrary segment, and is arranged at a target position in the augmented reality space. A channel information acquisition unit that acquires the channel information including information used for controlling reproduction of content of area broadcast, and a transmission unit that transmits the channel information to the receiver.

  The channel information includes a transmission point position of a transmitter used for calculation of distance information indicating a distance from the current position of the user in real space to the position of the target.

  The channel information includes distance reference information serving as a reference when reproducing the content of the area broadcast so as to change stepwise according to the distance information.

  The transmission device may be an independent device or an internal block constituting one device.

  The transmission method according to the second aspect of the present technology is a transmission method corresponding to the transmission device according to the second aspect of the present technology described above.

  In the transmission device and the transmission method according to the second aspect of the present technology, channel information for a receiver to receive content of an area broadcast, which is broadcast by an arbitrary segment, is positioned at a target position in augmented reality space. The channel information including information used for controlling the reproduction of the content of the area broadcast to be arranged is acquired, and the channel information is transmitted to the receiver.

  According to the first aspect and the second aspect of the present technology, it is possible to present content without bothering the user.

It is a block diagram which shows the structure of one Embodiment of the area broadcasting system to which this technique is applied. It is a figure which shows the external appearance of the wearable apparatus to which this technique is applied. It is a block diagram which shows the internal structure of the wearable apparatus to which this technique is applied. It is a block diagram which shows the structural example of a control program. It is a figure which shows the state transition of a wearable apparatus. It is a figure explaining the outline | summary of area broadcasting. It is a figure which shows the example of channel information. It is a figure which shows the structure of an area broadcast information descriptor. It is a figure explaining the item of an area broadcast information descriptor. It is a block diagram which shows the detailed structural example of an area broadcast transmitter. It is a block diagram which shows the detailed structural example of an information server. It is a figure which shows an example of a use case. It is a figure which shows the state transition of the wearable apparatus in the use case of FIG. It is a flowchart explaining the process during a tuner stop. It is a flowchart explaining the process during tuner reception. It is a flowchart explaining the process in video reproduction | regeneration. It is a flowchart explaining the process during video / audio reproduction. It is a flowchart explaining the process in audio | voice reproduction | regeneration. It is a flowchart explaining a content transmission process. It is a flowchart explaining a channel information provision process.

  Hereinafter, embodiments of the present technology will be described with reference to the drawings.

<Configuration of area broadcasting system>

  FIG. 1 is a block diagram showing a configuration of an embodiment of an area broadcasting system to which the present technology is applied.

  The area broadcasting system 1 presents content of area broadcasting according to the distance between the current position and the target position to a user wearing the wearable device 10. The area broadcast system 1 includes a wearable device 10, an area broadcast transmission device 20, and an information server 30. The wearable device 10 and the information server 30 are connected to each other via the wireless network 2 or the Internet.

  The wearable device 10 is a spectacle-type device having a transmissive display, headphones, a camera unit, a tuner, and the like, and is an example of a wearable computer. In the wearable device 10, a pair of transmissive displays for the left eye and the right eye are arranged at the position of a lens attached to a frame in normal glasses. Thereby, for example, a user wearing the wearable device 10 can display additional information related to the object on the object viewed through the transmissive display by using AR (augmented reality) technology, The photographed image can be taken and the photographed image can be shared with other users.

  The wearable device 10 has a GPS (Global Positioning System) function, and can receive the signal from the GPS satellite 3 to acquire the current position of the user wearing the wearable device 10.

  The area broadcast transmission device 20 is a transmitter that transmits a broadcast wave of area broadcast that is broadcast by an arbitrary segment (for example, one segment broadcast or full segment broadcast). However, area broadcasting is performed only in a predetermined broadcasting area because an area of several tens to several kilometers centered on the area broadcasting transmitter 20 is broadcast as a broadcasting area that can receive the broadcast wave. It becomes.

  The information server 30 manages channel information. The information server 30 provides channel information via the wireless network 2 or the like in response to a request from the wearable device 10. Here, the channel information is information for an area broadcast receiver to receive the area broadcast. For example, the channel information includes information such as a physical channel number, a service ID, a signal format, a transmission point position, and a service distance, which will be described later.

  The wearable device 10 acquires channel information from the information server 30 via the wireless network 2 or the like. As a result, the wearable device 10 automatically selects a channel using the channel information when the user wearing the wearable device 10 is within the broadcast area of the area broadcast transmission device 20, and The broadcast wave of the area broadcast will be received. The wearable device 10 can display an area broadcast content video on a pair of transmissive displays for the left eye and the right eye, and output sound synchronized with the video from the headphones.

  The area broadcasting system 1 is configured as described above.

<Configuration example of each device>

  Next, with reference to FIG. 2 to FIG. 11, a configuration example of each device constituting the area broadcasting system 1 of FIG. 1 will be described.

(Appearance of wearable device)
FIG. 2 is a diagram showing an appearance of the wearable device 10 of FIG.

  As shown in FIG. 2, the wearable device 10 includes a glasses-type frame 100 that is worn on the user's head, and a pair of transmissive displays 106 </ b> L for the left eye and the right eye that are attached to the frame 100. 106R.

  The pair of transmissive displays 106L and 106R for the left eye and the right eye are arranged immediately before the user's eyes in the wearing state, that is, at a position where a lens in normal glasses is located. For the displays 106L and 106R, for example, a transmissive liquid crystal panel is used. By controlling the transmittance, the transparent or translucent transmissive state can be obtained. In other words, since the transmissive displays 106L and 106R are in a transmissive state, even if the user is always wearing like normal glasses, there is no problem in normal life.

  Various information can be displayed on the displays 106L and 106R. For example, in the wearable device 10, an object such as a person or a structure that can be seen through the displays 106 </ b> L and 106 </ b> R is simultaneously photographed and analyzed by the camera unit 115, so that additional information related to the object is superimposed and displayed. AR can be realized. Here, markerless AR is a method for identifying the position of presentation of additional information by spatially recognizing objects that exist in the actual environment and the environment itself without using a specific marker. It is a technology to present.

  Wearable device 10 receives the broadcast wave of the area broadcast from area broadcast transmission device 20 via antenna 112 when the user wearing wearable device 10 is within the broadcast area of area broadcast transmission device 20, and its contents Can be displayed on the transmissive displays 106L and 106R, and sound synchronized with the video can be output from the headphones 107.

  As shown in FIG. 2, the wearable device 10 has functions such as a user operation detection function by the UI sensor 116 and a user's line-of-sight detection function by the line-of-sight detection sensor 117. For details, see FIG. Reference will be made later. In the following description, when there is no need to distinguish between the transmissive display 106L for the left eye and the transmissive display 106R for the right eye, the display is simply referred to as the display 106.

(Internal configuration of wearable device)
FIG. 3 is a block diagram showing an internal configuration of the wearable device 10 of FIG.

  As shown in FIG. 3, the wearable device 10 includes a CPU 101, a ROM 102, a RAM 103, a display 106, a headphone 107, an antenna 108, a GPS unit 109, an antenna 110, a communication unit 111, an antenna 112, a tuner 113, a gyro sensor 114, and a camera unit. 115, a UI sensor 116, a line-of-sight detection sensor 117, a video / audio processing unit 118, and a power supply unit 119.

  In the wearable device 10, a CPU (Central Processing Unit) 101, a ROM (Read Only Memory) 102, and a RAM (Random Access Memory) 103 are connected to each other by a bus 104. The CPU 101 controls the operation of each unit of the wearable device 10 by executing a control program recorded in the ROM. In addition, various data are appropriately recorded in the RAM 103.

  An input / output interface 105 is further connected to the bus 104. The input / output interface 105 includes a display 106, a headphone 107, a GPS unit 109, a communication unit 111, a tuner 113, a gyro sensor 114, a camera unit 115, a UI sensor 116, a line-of-sight detection sensor 117, and a video / audio processing unit 118. Is connected.

  The display 106 is the above-described pair of transmissive displays 106L and 106R for the left eye and the right eye. The headphone 107 is a small headphone arranged at a position close to the user's ear.

  The GPS unit 109 acquires the current position of the user by receiving a signal from the GPS satellite 3 via the antenna 108 according to the control from the CPU 101.

  The communication unit 111 is connected to the wireless network 2 via the antenna 110 according to control from the CPU 101 and exchanges information with various servers such as the information server 30. Although not shown, the wearable device 10 has a short-range wireless communication unit, and according to a short-range wireless communication standard such as Bluetooth (registered trademark), between other electronic devices such as a smartphone. Wireless communication can be used to exchange information.

  In accordance with control from the CPU 101, the tuner 113 selects and demodulates an area broadcast signal of a predetermined channel from the broadcast signal received via the antenna 112, and the resulting TS (Transport Stream) is video / audio. This is supplied to the processing unit 118.

  The gyro sensor 114 detects the rotation angle of the wearable device 10 and supplies the detection result to the CPU 101. Although not shown, various sensors such as an acceleration sensor that detects gravitational acceleration and a geomagnetic sensor that detects geomagnetism may be provided, and the detection results may be supplied to the CPU 101. For example, the CPU 101 can acquire the current position of the user without using the GPS function by so-called autonomous navigation using detection results from these sensors. Further, the CPU 101 may detect the posture and operation of the wearable device 10 using the detection results from these sensors.

  The camera unit 115 is an outward-facing camera that includes a solid-state imaging device such as a CMOS (Complementary Metal Oxide Semiconductor) image sensor, and has a function for photographing a subject that can be seen through the display 106. The camera unit 115 supplies image data obtained by photographing a subject and subjected to predetermined image processing to the CPU 101.

  For example, the UI sensor 116 detects an input operation performed on the frame 100 by the user, and supplies the detection result to the CPU 101. The CPU 101 controls the operation of each part of the wearable device 10 according to the detection result from the UI sensor 116. The operation by the user may be performed by, for example, a gesture or voice input, and the wearable device 10 can be provided with a sensor for detecting those operations.

  The line-of-sight detection sensor 117 is configured by, for example, an inward camera provided at a position where the user's eyes can be photographed. The line-of-sight detection sensor 117 detects the direction of the line of sight of the user wearing the wearable device 10 and supplies the detection result to the CPU 101.

  The video / audio processing unit 118 separates the TS supplied from the tuner 113 into video data, audio data, various data, and the like according to control from the CPU 101. The video / audio processing unit 118 decodes the video data and the audio data according to the control from the CPU 101 and supplies them to the display 106 and the headphones 107, respectively.

  The display 106 displays the video of the area broadcast content based on the video data supplied from the video / audio processing unit 118. The headphone 107 outputs audio corresponding to the audio data supplied from the video / audio processing unit 118, that is, audio of area broadcast content.

  The power supply unit 119 supplies power supplied from a storage battery or an external power supply to each unit of the wearable device 10 including the CPU 101.

(Control program)
FIG. 4 shows a process of presenting area broadcast content according to the distance between the current position and the target position to the user wearing the wearable device 10 in the control program executed by the CPU 101 of FIG. It is a block diagram which shows the part to perform.

  As illustrated in FIG. 4, the control program 151 includes a channel information acquisition unit 161, a position information acquisition unit 162, a distance information acquisition unit 163, a line-of-sight information acquisition unit 164, and a reproduction control unit 165.

The channel information acquisition unit 161 acquires channel information from the information server 30 via the wireless network 2 by controlling the communication unit 111. Further, the channel information acquisition unit 161 acquires a transmission point position (hereinafter also referred to as “transmission point position P _T ”) included in the channel information, and supplies the transmission point position to the distance information acquisition unit 163. Further, the channel information acquisition unit 161 acquires service distances (for example, D _A , D _B , and D _C ) included in the channel information and supplies them to the reproduction control unit 165.

The position information acquisition unit 162 controls the GPS unit 109 to acquire the current position of the user (hereinafter also referred to as “current position p _u ”) according to the signal from the GPS satellite 3, and the distance information acquisition unit 163.

The distance information obtaining unit 163 includes a transmission point position P _T supplied from the channel information acquiring section 161, using the current position p _u supplied from the position information obtaining unit 162, a predetermined arithmetic expression (e.g., below formula ( By calculating 1)), the distance D from the current position of the user to the target in the real space is calculated and supplied to the reproduction control unit 165.

  The line-of-sight information acquisition unit 164 controls the line-of-sight detection sensor 117 to acquire line-of-sight information indicating the direction of the user's line of sight and supplies it to the reproduction control unit 165.

The reproduction control unit 165 controls the reproduction of the area broadcast content by controlling the video / audio processing unit 118. Specifically, the reproduction control unit 165 determines whether the distance D supplied from the distance information acquisition unit 163 and the service distance (for example, D _A , D _B , D _C ) supplied from the channel information acquisition unit 161 are large or small. Based on the relationship, the start or stop of the video or audio of the area broadcast content or the adjustment of the audio volume is controlled.

  Also, the playback control unit 165 controls the playback of area broadcast content based on the line-of-sight information supplied from the line-of-sight information acquisition unit 164. For example, when the user's line of sight is in the target direction, the playback control unit 165 plays the video or audio of the area broadcast content, and when the user's line of sight is not in the target direction, the playback control unit 165 stops the area broadcast content video. Or adjust the audio volume.

(State transition of wearable device)
FIG. 5 is a diagram illustrating state transition of the wearable device 10 of FIG.

  As shown in FIG. 5, when the wearable device 10 is initialized after startup, the GPS function by the GPS unit 109, the wireless communication function by the communication unit 111, the shooting function by the camera unit 115, and the like are turned on, and sensing is performed. Be started. At this time, the wearable device 10 is in a state where channel selection by the tuner 113 is stopped (hereinafter referred to as “tuner stopped”).

  In the wearable device 10, when sensing is continued, when the target is recognized, channel information is acquired from the information server 30, and reception of broadcast waves of the area broadcast from the area broadcast transmission device 20 is started. At this time, wearable device 10 is in a state where tuning by tuner 113 is being performed (hereinafter referred to as “under tuner reception”).

Thereafter, in the wearable device 10, sensing is continued, so that the magnitude relationship between the distance D from the current position of the user to the target position and the service distance (for example, D _A , D _B , D _C ) is compared. In accordance with the comparison result, the reproduction of the area broadcast content is controlled. At this time, the wearable device 10 is in a state where only the content video is being played back (hereinafter referred to as “video playback”), and in the state where both the video and audio of the content are being played back (hereinafter “ It is in a state in which only the audio of the content is being played back (hereinafter referred to as “playing back audio”).

  The wearable device 10 does not belong to any of the above-described five states when sensing is stopped, for example, by a user's setting or termination operation, and ends the presentation of area broadcast content according to the distance D to the user. Will do.

  As described above, the wearable device 10 is “playing video”, “playing video / audio”, or “playing audio” depending on the distance D between the current position of the user wearing the wearable device 10 and the target position D. The state of reproduction of the area broadcast content can be changed in stages. Thereby, the user wearing the wearable device 10 can view the content that changes in stages without performing any special operation.

(Outline of area broadcasting)
Next, detailed configurations of the area broadcast transmission device 20 and the information server 30 in FIG. 1 will be described. First, an outline of area broadcast will be described with reference to FIGS. 6 to 9.

  FIG. 6 is a diagram for explaining the outline of area broadcasting. In addition, as disclosed in Japanese Patent Application Laid-Open No. 2011-212627, the area broadcast is an area of about several tens of meters to several kilometers centered on a transmission device that transmits a broadcast wave of a broadcast by an arbitrary segment. Broadcasting is performed as a broadcasting area where the broadcast wave can be received, and its operation has already been started.

  The area broadcast transmitters 20-1 to 20-3 are transmitters that transmit broadcast waves of area broadcasts, and transmit broadcast waves of area broadcasts in each of any one or more segments of vacant channels of digital terrestrial broadcasting. To do. The area broadcast transmitters 20-1 to 20-3 are, for example, building walls that display movie posters that are actually posted on urban structures and movie posters that are superimposed on structures using AR technology. It is installed near each target.

  The area broadcast transmission apparatus 20-1 performs area broadcast that can be received only in the broadcast area A. The area broadcast transmission device 20-2 performs area broadcast that can be received only in the broadcast area B, and the area broadcast transmission device 20-3 performs area broadcast that can be received only in the broadcast area C. Here, as the area broadcast, for example, content that is reproduced at a target position such as a movie trailer or a product advertisement is broadcast. Moreover, in area broadcasting, it is possible to broadcast in the same segment between area broadcasting stations whose broadcasting areas do not overlap.

  For example, in FIG. 6, the broadcast area A and the broadcast area B do not overlap, so the area broadcast transmission device 20-1 in the broadcast area A and the area broadcast transmission device 20-2 in the broadcast area B are the same. Area broadcasting can be performed in this segment. In FIG. 6, the broadcast area B and the broadcast area C do not overlap, so the area broadcast transmission device 20-2 in the broadcast area B and the area broadcast transmission device 20-3 in the broadcast area C are the same. Area broadcasting can be performed in this segment.

  However, in FIG. 6, since the broadcast area A and the broadcast area C partially overlap, the area broadcast transmission device 20-1 in the broadcast area A and the area broadcast transmission device 20-3 in the broadcast area C Then, the same segment cannot be used for area broadcasting.

  For example, as shown in FIG. 6, when the user wearing the wearable device 10 is in the broadcast area A, the wearable device 10 acquires channel information from the information server 30 to obtain the area broadcast transmission device 20 in the broadcast area A. -1 area broadcasts can be received. Here, as shown in FIG. 7, the channel information includes information related to area broadcasting by the area broadcasting transmitting device 20-1, such as physical channel number, service ID, signal format, transmission point position, and service distance. .

Physical channel number C _h is information indicating a number of the physical channel area broadcasting by area broadcast transmitting device 20-1. The service ID S _id is identification information of an area broadcast service by the area broadcast transmission apparatus 20-1. The signal format F _m is information indicating the format of the area broadcast signal by the area broadcast transmission device 20-1.

The transmission point position _PT is information indicating the installation position of the antenna of the area broadcast transmission device 20-1. For example, as the transmission point position _PT , position information indicating the latitude and longitude indicating the installation position of the antenna is specified. However, for the transmission point position _PT , a target position such as the position of a film poster posted (displayed) on a wall of a building may be designated instead of the antenna installation position. Thus, when directly specifying the position of the target, it is not necessary to install the area broadcast transmission device 20-1 in the vicinity of the target.

The service distance is information indicating a reference distance when the state of the wearable device 10 is changed according to the distance D from the current position of the user to the target. For example, the service distance is specified in three stages of distances D _A , D _B , and D _C (D _A > D _B > D _C ). However, in this example, the distance D _A, it is assumed to be within the broadcast area A of the area broadcast transmitting apparatus 20-1. In the following description, the distance D _A, D _B, the number of stages is illustrated a case where the reference of the three-step D _C is designated is arbitrary, as the number of stages is larger, finer the state of the wearable device 10 Transitions can be made in units.

  The channel information is provided by, for example, an area broadcaster. Further, the information included in the channel information is arbitrary, and other information other than the information illustrated in FIG. 7 may be included, and the information illustrated in FIG. 7 is not necessarily included. For example, the service distance may be calculated on the wearable device 10 side using various types of information.

  The channel information is downloaded directly from the information server 30 by the wearable device 10 or downloaded from the information server 30 to an electronic device owned by a user such as a smartphone, and between the smartphone and the wearable device 10. It may be acquired in the wearable device 10 by performing wireless communication for exchanging channel information.

  Incidentally, the items shown in FIG. 8 are defined in the area broadcast information descriptor transmitted by the segment from the area broadcast transmission apparatus 20. That is, as shown in FIG. 8, station_id and area_code are a station ID and an area code, respectively. Further, format and emission_power are a signal format and a transmission output, respectively, as shown in FIG. Further, station_latitude, station_longitude, and station_height are a transmission station latitude, a transmission station longitude, and a transmission station altitude, respectively, as shown in FIG. Furthermore, the directivity_pattern_bitmap is a directivity pattern bitmap as shown in FIG. open_air_flag, closed_space_flag, and station_mobility_flag are an open air flag, a closed space flag, and a mobile station flag, respectively. extended_info () is extended information. extended_info () is included in the area broadcast information descriptor when extended_info_flag is 1.

(Detailed configuration example of area broadcasting transmitter)
FIG. 10 is a block diagram illustrating a detailed configuration example of the area broadcast transmission device 20 of FIG. In FIG. 10, the area broadcast transmission device 20 includes a content acquisition unit 201, a content processing unit 202, and a transmission unit 203.

  The content acquisition unit 201 acquires area broadcast content video data from a built-in HDD (Hard Disk Drive), an external server, a camera, and the like, and supplies the video data to the content processing unit 202. Further, the content acquisition unit 201 acquires audio data of area broadcast content from a built-in HDD, an external server, a microphone, or the like, and supplies it to the content processing unit 202.

  The content processing unit 202 encodes the video data supplied from the content acquisition unit 201 in accordance with an encoding method such as MPEG (Moving Picture Experts Group). In addition, the content processing unit 202 encodes the audio data supplied from the content acquisition unit 201 in accordance with an encoding method such as MPEG.

  The content processing unit 202 multiplexes video data and audio data obtained by encoding, and various data such as PSI / SI, generates a TS (Transport Stream), and supplies the TS (Transport Stream) to the transmission unit 203. The transmission unit 203 transmits the TS supplied from the content processing unit 202 as a broadcast signal via the antenna 204 in a predetermined segment.

  As described above, the area broadcast transmission device 20 is installed in the vicinity of the target, for example, a content such as a movie trailer or a product advertisement that is placed at the target position that the user wearing the wearable device 10 sees through the display 106. Send.

(Detailed configuration example of information server)
FIG. 11 is a block diagram illustrating a detailed configuration example of the information server 30 of FIG. In FIG. 11, the information server 30 includes a control unit 301, a channel information acquisition unit 302, a channel information holding unit 303, and a communication unit 304.

  The control unit 301 controls the operation of each unit of the information server 30. The channel information acquisition unit 302 acquires channel information according to the control from the control unit 301 and records it in the channel information holding unit 303.

  When the channel information is requested from the wearable device 10, the control unit 301 reads and acquires the channel information from the channel information holding unit 303. The communication unit 304 transmits channel information to the requestable wearable device 10 via the wireless network 2 in accordance with control from the control unit 301.

  As described above, the information server 30 provides the channel information of FIG. 7 via the wireless network 2 in response to a request from the wearable device 10.

<Use case>

  Next, a specific use case using the present technology will be described with reference to FIGS. 12 and 13.

  As shown in FIG. 12, a user walking in a city area is wearing the wearable device 10, and the display 106 has a structure such as a building and a store that can be seen through the display 106, a movie poster 401, and an advertisement 402. , 403 are superimposed by AR technology. Here, when a movie poster 401 (a wall of a building on which is superimposed) is selected as a target, according to a distance D from the current position of the user walking toward the building to the target position, The state of wearable device 10 changes. As a result, in the wearable device 10, the playback state of the area broadcast content being received (in the example of FIG. 12, the movie trailer (trailer) of the poster 401) changes in stages.

That is, as shown in FIG. 13, the wearable device 10, when the distance D> D _A is in a state of "tuner stopped". Thereafter, when the distance D changes as the user's current position moves and D _B <D ≦ D _A , the state of the wearable device 10 transitions to “receiving tuner”. If the distance D changes as the user's current position further moves and D _C <D ≦ D _B , the state of the wearable device 10 transitions to “video playback”. As a result, in the wearable device 10, playback of the movie trailer video of the poster 401 is started and the video is displayed on the display 106.

The distance D is changed by the current position of the user moves, when a D ≦ D _C, the state of the wearable device 10 transits to "video and audio reproduction." As a result, in the wearable device 10, not only the movie trailer video of the poster 401 is displayed on the display 106, but also audio synchronized with the video is output from the headphones 107. At this time, the volume of the sound output from the headphones 107 is adjusted stepwise.

  However, the state of the wearable device 10 changes according to the line-of-sight information. Specifically, when the state of wearable device 10 is “video playback”, when the direction of the user ’s line of sight is upward, that is, toward the target, the status of “video playback” is set. Maintained. On the other hand, when the user's line of sight is facing downward, that is, not facing the target, the state transitions from “video playback” to “tuner reception”, and video playback of the movie trailer of the poster 401 is played back. Will be stopped. When the user's line of sight changes from downward to upward, the state transitions from “receiving tuner” to “playing video”, and playback of the movie trailer video of the poster 401 is resumed. .

  Further, when the wearable device 10 is in the state of “video / audio playback”, the state of “video / audio playback” is maintained when the user's line of sight is facing upward, that is, in the direction of the target. . On the other hand, when the user's line of sight is facing downward, i.e., not facing the target, the state transitions from "video / audio playback" to "audio playback", and the video trailer video of the poster 401 is played back. The sound is stopped and only sound is output from the headphones 107. At this time, the sound volume is adjusted and the sound volume is lowered. When the user's line of sight changes from downward to upward, the state transitions from “playing audio” to “playing video and audio”, and the playback of the movie trailer video of the poster 401 is resumed and further lowered. The volume of the voice that has been set will be restored to the original state.

  As described above, in this example, when the user wearing the wearable device 10 approaches the building wall visible through the display 106 while looking at the movie poster 401 superimposed by the AR technology, the video of the trailer of the movie is displayed. Playback starts. When the user approaches the wall of the building while looking at the poster 401, sound synchronized with the video of the movie trailer can be heard.

  In this manner, a movie trailer video or the like is presented, but the user wearing the wearable device 10 does not need to perform channel input operation or scanning operation of area broadcasting, and is related to channel selection. Since prior information or the like is unnecessary, it is freed from complicated channel selection operations. In addition, the user wearing the wearable device 10 simply performs an operation of walking with interest, and when the user approaches the target, the playback of the area broadcast content video and audio is automatically started. No special operations or instructions are required. Therefore, area broadcast content can be presented without bothering the user. In addition, the user only needs to perform daily operations, and a natural UI (User Interface) can be realized.

  In addition, it is possible to present area broadcast content according to the current position of the user without notifying the user of the wearable device 10 in advance of the service area. That is, it is troublesome to notify the service area in advance, but using this technique makes it possible to save such trouble. Furthermore, since area broadcast content is provided only in a broadcast area that can be reliably received by wearable device 10, it is guaranteed for the service provider that area broadcast content is reliably received. . In addition, when using a communication network represented by the Internet, if the access is concentrated in a city area where many people gather, it becomes difficult to provide video content. Since it is used, for example, it is possible to reliably provide a service even in a place where many people gather, such as an urban area or a stadium.

  In this use case, video and audio of a movie trailer as an area broadcast content are reproduced on the display 106 on the movie poster 401 by AR technology (the wall of a building on which is superimposed). For example, video and audio of a movie trailer as area broadcast content are reproduced on an actual movie poster (a wall of a building on which it is posted) that can be seen through the display 106. It may be.

<Details of specific processing performed in each device>

  Next, with reference to the flowcharts of FIGS. 14 to 20, the contents of specific processing performed in each device constituting the area broadcasting system 1 of FIG. 1 will be described.

(Content presentation process)
First, content presentation processing executed by the wearable device 10 in FIG. 1 will be described with reference to the flowcharts in FIGS. 14 to 18. This content presentation processing is started at the same time when the wearable device 10 is turned on and the wearable device 10 is activated, for example. However, in the wearable device 10, the GPS function by the GPS unit 109, the wireless communication function by the communication unit 111, and the photographing function by the camera unit 115 are turned on at the time of activation.

  In step S101, target recognition processing is performed using the captured image captured by the camera unit 115. In this target recognition processing, for example, a poster of a movie actually posted on a structure in an urban area (a wall of a building on which the poster is posted) or a poster of a movie superimposed on a structure by AR technology is superimposed and displayed. The wall of the building) is recognized as the target.

  In step S102, it is determined whether or not the target is recognized by the target recognition process. If it is determined in step S102 that the target is not recognized, the target recognition process in step S101 is repeated. If it is determined in step S102 that the target has been recognized, the process proceeds to step S103.

  In step S103, the channel information acquisition unit 161 acquires channel information from the information server 30 via the wireless communication network 2 or the like by controlling the communication unit 111. Here, for example, the URL (Uniform) of the information server 30 that provides channel information for area broadcasting by the area broadcasting transmitter 20 installed in the vicinity of a building that posts a poster of a movie recognized by the markerless AR technology. Resource Locator) is acquired, and channel information is acquired by accessing the information server 30 according to the URL.

In step S104, the channel information acquisition unit 161 acquires the transmission point position _PT included in the channel information. Further, in step S105, position information obtaining unit 162, by controlling the GPS unit 109 acquires the current position p _u of the user in response to a signal from the GPS satellite 3.

In step S106, the distance information acquisition unit 163 uses the transmission point position _PT and the current position _pu to calculate, for example, the following equation (1) to obtain the distance from the user's current position to the target in the real space. The distance D is calculated.

D = | _pu− P _T | (1)

In step S107, the distance D calculated in step S106, the magnitude relation between the service distance D _A included in the channel information is determined.

If it is determined in step S107 that D _A <D, the process returns to step S105, and the above-described process is repeated. That is, if the current position p _u of the user is out of range of service distance D _A, the value of the distance D in accordance with the current position p _u of the user is updated, until D ≦ D _A, the determination process of step S107 Is repeated.

In step S107, if it is determined that D ≦ _{D A,} the process proceeds to step S111 in FIG. 15.

Thus, processing of steps S101 to S107 in FIG. 14 is a process of "tuner stop" the channel selection is performed in a stopped state by the tuner 113, satisfies the relationship D> D _A, The user's current position p _u is outside the range of the service distance D _A.

  In step S111 in FIG. 15, the tuner 113 starts channel selection using the channel information, and starts receiving area broadcast content from the area broadcast transmission device 20.

In step S112, S113, similarly to step S105,106 in FIG. 14, the acquired current position _{p u} of the user, for example, the distance D is calculated using equation (1) described above. In step S114, the magnitude relationship between the distance D obtained in step S113 and the service distances D _A and D _B included in the channel information is determined.

If it is determined in step S114 that D _B <D ≦ D _A , the process returns to step S112 and the above-described process is repeated. That is, when the user's current position p _u is within the range of the service distance D _A and outside the range of the service distance D _B , the value of the distance D is updated according to the user's current position p _u and D> The determination process in step S114 is repeated until D _A or D ≦ D _B.

Further, in step S114, if it is determined that D> _{D A,} processing proceeds to step S115. In step S115, the tuner 113 stops channel selection using the channel information and stops receiving area broadcast content. When the process of step S115 ends, the process returns to step S105 of FIG. 14, and the subsequent processes are performed. That is, in this case, since the current position p _{u of the} user is out of the range of the service distance D _A , the process returns to the processing during the tuner stop of FIG.

Further, in step S114, if it is determined that D ≦ _{D B,} the process proceeds to step S121 in FIG. 16.

As described above, the processing in steps S111 to S115 in FIG. 15 is “tuner receiving” processing that is executed in the state where the tuner is selected, and the relationship of D _B <D ≦ D _A is satisfied. It filled and the current position p _u users, within a service distance D _a, and has become out of the range of service distance D _B.

  In step S121 of FIG. 16, it is determined whether the user's line of sight is in the direction of the target, that is, whether the target is in the field of view, according to the line-of-sight information acquired by the line-of-sight information acquisition unit 164. In step S121, after waiting for the target to be determined to be within the field of view, the process proceeds to step S122. In step S122, the playback control unit 165 starts playback of the content broadcast content video. As a result, in wearable device 10, an area broadcast content image is displayed on display 106.

In step S123, S124, similarly to step S105,106 in FIG. 14, the acquired current position _{p u} of the user, for example, the distance D is calculated using equation (1) described above. Then, in step S125, the distance D determined in step S124, the service distance _D B included in the channel information, the magnitude relationship between _{D C} is determined.

If it is determined in step S125 that D _C <D ≦ D _B , the process returns to step S121, and the above-described process is repeated. That is, when the user's current position p _u is within the service distance D _B and outside the service distance D _C , the value of the distance D is updated according to the user's current position p _u and D> The determination process in step S125 is repeated until D _B or D ≦ D _C.

If it is determined in step S125 that D> D _B , the process proceeds to step S126. In step S126, the playback control unit 165 stops playback of the video of the content being played back. When the process of step S126 ends, the process returns to step S112 of FIG. 15, and the subsequent processes are performed. That is, in this case, since the current position p _u users became out of the range of service distance D _B, it will be returned to the processing in the tuner-received in FIG.

Further, in step S125, the case where it is determined that the D ≦ _{D C,} the process proceeds to step S131 in FIG. 17.

As described above, the processing of steps S121 to S126 in FIG. 16 is “video playback” processing executed while the video of the content is being played back, and the relationship of D _C <D ≦ D _B It meets the current position p _u users, within the scope of the service distance D _B, and has a range of services distance D _C.

  In step S131 in FIG. 17, the reproduction control unit 165 starts reproduction of the audio of the area broadcast content. As a result, in wearable device 10, the video of the area broadcast content is displayed on display 106, and audio synchronized with the video is output from headphone 107.

In step S132, S133, similarly to step S105,106 in FIG. 14, the acquired current position _{p u} of the user, for example, the distance D is calculated using equation (1) described above. Then, in step S134, the distance D calculated in step S133, the magnitude relation between the service distance D _C included in the channel information is determined.

In step S134, if it is determined that D ≦ _{D C,} the process proceeds to step S135. In step S135, the reproduction control unit 165 adjusts the sound volume of the content of the area broadcast being reproduced. For example, the volume is adjusted by increasing the volume of the sound of the content being played by one level or by decreasing the level by one level. Or the volume may not be changed.

In step S136, it is determined whether the target is in the field of view, as in step S121 of FIG. If it is determined in step S136 that the target is within the field of view, the process returns to step S132, and the subsequent processes are repeated. That is, in a range current position p _u users of the service distance D _C, when the target is within the field of view, the audio adjustment processing in step S135 is performed, for example, the volume of the audio content being played Is raised by one step. Thus, the current position p _u of the user, as the distance between the position of the target approaches, so that the volume of the sound of the content of the area broadcast increases.

Further, in step S134, if it is determined that D> _{D C,} the process proceeds to step S137. In step S137, the reproduction control unit 165 stops the sound of the content of the area broadcast being reproduced. As a result, in the wearable device 10, the video of the area broadcast content is displayed on the display 106, but the audio synchronized with the video is not output.

  When the process of step S137 ends, the process proceeds to step S123 of FIG. 16, and the subsequent processes are performed. If it is determined in step S136 that the target is not in the field of view, the process proceeds to step S141 in FIG.

As described above, the processing in steps S131 to S136 in FIG. 17 is a “video and audio playback” process that is executed while the video and audio of the content are being played back, and the relationship of D ≦ D _C meets the current position p _u users, it is within the scope of the service distance D _C.

  In step S141 in FIG. 18, the reproduction control unit 165 stops the video of the content of the area broadcast being reproduced. Thereby, in the wearable device 10, the video of the area broadcast content is not displayed on the display 106, but only the sound is output from the headphones 107.

In step S142, S143, similarly to step S105,106 in FIG. 14, the acquired current position _{p u} of the user, for example, the distance D is calculated using equation (1) described above. Then, in step S144, the distance D calculated in step S143, the magnitude relation between the service distance D _C included in the channel information is determined.

In step S144, if it is determined that D ≦ _{D C,} the process proceeds to step S145. In step S145, the reproduction control unit 165 adjusts the sound volume of the area broadcast content being reproduced. The adjustment of the volume is performed, for example, by adjusting the volume of the sound of the content being reproduced to be lowered by one level or by raising it by one level. Or the volume may not be changed.

In step S146, it is determined whether or not the target is in the field of view, as in step S121 of FIG. If it is determined in step S146 that the target is not within the field of view, the process returns to step S142, and the subsequent processes are repeated. That is, in a range current position p _u users of the service distance D _C, if the target is not within the field of view, the audio adjustment processing in step S145 is performed, for example, the volume of the audio content being played Is lowered by one step. As a result, when the user's line of sight is not facing the target, the volume of the audio of the area broadcast content is gradually reduced.

  If it is determined in step S146 that the target is within the field of view, the process proceeds to step S147. In step S147, the playback control unit 165 starts playback of the video of the area broadcast content. As a result, in the wearable device 10, the video of the area broadcast content is displayed on the display 106, and audio synchronized with the video is output from the headphones 107. At this time, the sound volume of the content output from the headphones 107 is returned to the original state.

  When the process of step S147 ends, the process proceeds to step S132 of FIG. 17, and the subsequent processes are performed.

Further, in step S144, if it is determined that D> _{D C,} process advances to step S148. In step S148, the reproduction control unit 165 stops the audio of the content of the area broadcast being reproduced. As a result, the wearable device 10 is in a state where the video and audio of the area broadcast content are not reproduced.

  When the process of step S148 ends, the process returns to step S121 of FIG. 16, and the subsequent processes are performed.

Thus, the processing of steps S141 to S147 in FIG. 18 is a process of "during voice reproduction" performed in a state in which reproduction of the sound of the content is performed, satisfies the relation D ≦ D _C cage, the current position p _u users, are within the scope of the service distance D _C.

  Above, description of a content presentation process is complete | finished.

(Content transmission processing)
Next, content transmission processing executed by the area broadcast transmission device 20 of FIG. 1 will be described with reference to the flowchart of FIG.

  In step S <b> 201, the content acquisition unit 201 acquires video data and audio data of area broadcast content and supplies the content data to the content processing unit 202.

  In step S202, the content processing unit 202 encodes the video data and audio data supplied from the content acquisition unit 201 in accordance with an encoding method such as MPEG. Also, the content processing unit 202 multiplexes video data and audio data obtained by encoding, and various data such as PSI / SI, generates a TS, and supplies the TS to the transmission unit 203.

  In step S203, the transmission unit 203 transmits the TS supplied from the content processing unit 202 as a broadcast signal in a predetermined segment via the antenna 204. When the process of step S203 ends, the content transmission process ends.

  Above, description of a content transmission process is complete | finished.

(Channel information provision processing)
Finally, the channel information provision processing executed by the information server 30 of FIG. 1 will be described with reference to the flowchart of FIG.

  In step S301, the control unit 301 monitors the communication unit 304 to determine whether channel information is requested from the wearable device 10. In step S301, after waiting for a request for channel information from wearable device 10, the process proceeds to step S302.

  In step S <b> 302, the control unit 301 acquires channel information corresponding to the request from the wearable device 10 from the channel information holding unit 303. In step S <b> 303, the communication unit 304 transmits (provides) the channel information acquired from the channel information holding unit 303 to the requestable wearable device 10 in accordance with the control from the control unit 301. When the process of step S303 ends, the channel information provision process ends.

  Above, description of a channel information provision process is complete | finished.

  As described above, according to the present technology, since the user wearing the wearable device 10 simply performs an operation of walking, the playback of the video and audio of the area broadcast content is automatically started. There is no need for special operations or instructions. Therefore, area broadcast content can be presented without bothering the user.

  Note that the structure of the glasses-type wearable device 10 shown in FIG. 2 described above is an example, and various structures for the user to wear the wearable device 10 can be considered. In general, it may be formed of a wearing unit that is a spectacle type or a head-mounted type, and it is sufficient that the displays 106L and 106R are provided in the vicinity of at least the front of the user's eyes. In addition to providing a pair of displays for both eyes, a configuration may be adopted in which only one display is provided corresponding to one eye. In addition, since the wearable device 10 can perform wireless communication with an electronic device possessed by a user such as a smartphone, for example, reception processing of area broadcast content is performed on the smartphone side, and the wearable device 10 side Then, you may make it reproduce | regenerate the content sent from a smart phone.

In the above description, for simplification of description, the area broadcast transmission device 20 is installed in the vicinity of the target so that the position of the target matches the position specified by the transmission point position _PT . As described above, the position D of the actual target in the real space may be acquired, and the distance D may be calculated using the actual target position and the current position of the user. Further, when the target moves, such as an advertisement placed on the exterior of a bus or train, for example, the relative distance between the current position of the user and the position of the target is obtained as the distance D. In short, it is only necessary to obtain distance information for presenting area broadcast content according to the distance between the current position and the target position to the user wearing the wearable device 10, and the calculation method is arbitrary. It is.

  In the above description, the example in which the audio is reproduced after the area broadcast content video is reproduced has been described. However, the reproduction order of the video and the audio may be reversed, or only the video or only the audio is reproduced. May be played back. Further, the content is not limited to the above-described video and audio, but may be information such as text information and still images, for example, the distance between the current position of the user wearing the wearable device 10 and the target position. Accordingly, text information, still images, and moving images can be reproduced step by step.

  Further, in the above description, the wearable device 10 has been described as receiving area broadcast content transmitted from the area broadcast transmission device 20, but communication distributed from a distribution server (not shown) provided on the Internet. The content may be received and streaming playback may be performed according to the distance between the current position of the user and the target position. For example, the communication contents are contents such as movie trailers and product advertisements distributed by VOD (Video On Demand).

  The control program executed by wearable device 10 (CPU 101) can be provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting. In the wearable device 10, the control program can be received by the communication unit 111 via a wired or wireless transmission medium and installed in the ROM 102 or the like. In addition, the control program can be installed in advance in the ROM 102 or the like.

  The control program executed by the wearable device 10 (CPU 101) may be a program that is processed in time series in the order described in this specification, or in parallel or when a call is made. It is also possible to use a program that performs processing at a necessary timing. Here, in the present specification, the processing steps for describing a control program for causing the wearable device 10 (CPU 101) to perform various processes do not necessarily have to be processed in time series in the order described in the flowchart. In addition, processing that is executed in parallel or individually (for example, parallel processing or processing by an object) is also included.

  Further, the control program may be processed by one computer or may be distributedly processed by a plurality of computers. Furthermore, the control program may be transferred to a remote computer and executed. Furthermore, in this specification, the system means a set of a plurality of components (devices, modules (parts), etc.), and it does not matter whether all the components are in the same housing. Accordingly, a plurality of devices housed in separate housings and connected via a network and a single device housing a plurality of modules in one housing are all systems. .

  The embodiments of the present technology are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present technology. For example, the present technology can take a configuration of cloud computing in which one function is shared by a plurality of devices via a network and jointly processed. In addition, each step described in the above flowchart can be executed by being shared by a plurality of apparatuses in addition to being executed by one apparatus. Furthermore, when a plurality of processes are included in one step, the plurality of processes included in the one step can be executed by being shared by a plurality of apparatuses in addition to being executed by one apparatus.

  Moreover, this technique can take the following structures.

(1)
A receiving unit for receiving content arranged at a target position in the augmented reality space;
A distance information acquisition unit that acquires distance information indicating a distance from the current position of the user in real space to the position of the target;
And a playback control unit that controls playback of the content according to the distance information.
(2)
The reception device according to (1), wherein the reproduction control unit reproduces the content so as to change stepwise according to the distance information.
(3)
It is arranged so as to be positioned in front of the user's eyes and further includes a display unit capable of displaying the information and making the display area transparent or translucent.
The receiving device according to (1) or (2), wherein the display unit displays a video of the content being played back.
(4)
The receiving device according to (3), further comprising: an audio output unit that outputs audio of the content being reproduced.
(5)
A channel information acquisition unit that acquires channel information for receiving area broadcasts that are broadcasts by an arbitrary segment;
The reception unit receives the content of the area broadcast in a broadcast area where the broadcast wave transmitted from the transmitter that performs the area broadcast can be received using the channel information. (1) to (4 ) The receiving device according to any one of the above.
(6)
The receiving apparatus according to (5), wherein the distance information acquisition unit calculates the distance information using a current position of the user and a transmission point position of the transmitter included in the channel information.
(7)
The receiving apparatus according to (5), wherein the distance information acquisition unit calculates the distance information using the current position of the user and the position of the target.
(8)
The reproduction control unit reproduces the content so as to change stepwise according to the distance information with reference to the distance reference information included in the channel information. (5) to (7) The receiving device according to item.
(9)
The reception apparatus according to any one of (8), wherein the reproduction control unit changes reproduction of at least one of the video and audio of the content in stages.
(10)
The reception according to any one of (9), wherein the playback control unit increases the volume of the audio of the content as the distance between the current position of the user and the position of the target decreases. apparatus.
(11)
A line-of-sight information acquisition unit that acquires line-of-sight information indicating the direction of the line of sight of the user;
The reception device according to any one of (1) to (10), wherein the reproduction control unit reproduces the content according to the line-of-sight information.
(12)
Whether the playback control unit plays the video or audio of the content when the user's line of sight is in the target direction, and stops the video of the content when the user's line of sight is not in the target direction Or the volume of an audio | voice is adjusted.
(13)
The receiving device according to (3), wherein the receiving device is a glasses-type wireless communication device having a pair of display units for left eye and right eye.
(14)
In the receiving method of the receiving device,
The receiving device is
Receive content placed at the target location in augmented reality space,
Obtain distance information indicating the distance from the current position of the user in real space to the position of the target,
A receiving method including a step of controlling reproduction of the content according to the distance information.
(15)
Channel information for a receiver to receive content of an area broadcast that is broadcast by an arbitrary segment, and information used for controlling playback of the content of the area broadcast that is arranged at a target position in augmented reality space A channel information acquisition unit for acquiring the channel information including:
A transmission device comprising: a transmission unit that transmits the channel information to the receiver.
(16)
The transmission apparatus according to (15), wherein the channel information includes a transmission point position of a transmitter used for calculation of distance information indicating a distance from the current position of the user in real space to the position of the target.
(17)
The transmission apparatus according to (16), wherein the channel information includes distance reference information serving as a reference for reproducing the area broadcast content so as to change stepwise according to the distance information.
(18)
In the transmission method of the transmission device,
The transmitting device is
Channel information for a receiver to receive content of an area broadcast that is broadcast by an arbitrary segment, and information used for controlling playback of the content of the area broadcast that is arranged at a target position in augmented reality space The channel information including
A transmission method including a step of transmitting the channel information to the receiver.

  1 area broadcast system, 2 wireless network, 3 GPS satellite, 10 wearable device, 20 area broadcast transmission device, 30 information server, 101 CPU, 106, 106L, 106R transmissive display, 109 GPS unit, 113 tuner, 115 camera unit 117 Gaze detection sensor 151 Control program 161 Channel information acquisition unit 162 Position information acquisition unit 163 Distance information acquisition unit 164 Gaze information acquisition unit 165 Playback control unit 301 Control unit 302 Channel information acquisition unit 304 Communication unit

Claims (18)

A receiving unit for receiving content arranged at a target position in the augmented reality space;
A distance information acquisition unit that acquires distance information indicating a distance from the current position of the user in real space to the position of the target;
And a playback control unit that controls playback of the content according to the distance information. The receiving device according to claim 1, wherein the reproduction control unit reproduces the content so as to change stepwise according to the distance information. It is arranged so as to be positioned in front of the user's eyes and further includes a display unit capable of displaying the information and making the display area transparent or translucent.
The receiving device according to claim 2, wherein the display unit displays a video of the content being played back. The receiving device according to claim 3, further comprising an audio output unit that outputs audio of the content being reproduced. A channel information acquisition unit that acquires channel information for receiving area broadcasts that are broadcasts by an arbitrary segment;
The reception unit receives content of the area broadcast in a broadcast area where the broadcast wave transmitted from a transmitter that performs the area broadcast can be received using the channel information. Receiver device. The receiving apparatus according to claim 5, wherein the distance information acquisition unit calculates the distance information using a current position of the user and a transmission point position of the transmitter included in the channel information. The receiving device according to claim 5, wherein the distance information acquisition unit calculates the distance information using the current position of the user and the position of the target. The receiving device according to claim 5, wherein the reproduction control unit reproduces the content so as to change stepwise according to the distance information, based on distance reference information included in the channel information. The receiving device according to claim 8, wherein the reproduction control unit changes reproduction of at least one of video and audio of the content in stages. The receiving device according to claim 9, wherein the reproduction control unit increases the sound volume of the content as the distance between the current position of the user and the position of the target approaches. A line-of-sight information acquisition unit that acquires line-of-sight information indicating the direction of the line of sight of the user;
The receiving device according to claim 2, wherein the reproduction control unit reproduces the content according to the line-of-sight information. Whether the playback control unit plays the video or audio of the content when the user's line of sight is in the target direction, and stops the video of the content when the user's line of sight is not in the target direction The receiving device according to claim 11, wherein the volume of the sound is adjusted. The receiving apparatus according to claim 3, wherein the receiving apparatus is a glasses-type wireless communication device having a pair of display units for left eye and right eye. In the receiving method of the receiving device,
The receiving device is
Receive content placed at the target location in augmented reality space,
Obtain distance information indicating the distance from the current position of the user in real space to the position of the target,
A receiving method including a step of controlling reproduction of the content according to the distance information. Channel information for a receiver to receive content of an area broadcast that is broadcast by an arbitrary segment, and information used for controlling playback of the content of the area broadcast that is arranged at a target position in augmented reality space A channel information acquisition unit for acquiring the channel information including:
A transmission device comprising: a transmission unit that transmits the channel information to the receiver. The transmission apparatus according to claim 15, wherein the channel information includes a transmission point position of a transmitter used for calculation of distance information indicating a distance from a current position of a user in real space to the position of the target. The transmission apparatus according to claim 16, wherein the channel information includes distance reference information serving as a reference when the content of the area broadcast is reproduced so as to change stepwise according to the distance information. In the transmission method of the transmission device,
The transmitting device is
Channel information for a receiver to receive content of an area broadcast that is broadcast by an arbitrary segment, and information used for controlling playback of the content of the area broadcast that is arranged at a target position in augmented reality space The channel information including
A transmission method including a step of transmitting the channel information to the receiver.

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