METHOD OF PROVIDING CONTENTS, PROGRAM FOR EXECUTING THE METHOD ON COMPUTER, AND APPARATUS FOR PROVIDING THE CONTENTS

A method of providing content according to at least one embodiment of this disclosure includes acquiring first information from an article, wherein the first information identifies first content data to be managed by a server. The method further includes acquiring second information from the article, wherein the second information is used for authentication that an access request to the first content data is valid. The method further includes transmitting the access request including the first information and the second information to the server. The method further includes receiving the first content data from the server, wherein the first content data is transmitted from the server in response to the server authenticating that the access request is valid by using the second information. The method further includes outputting to a head-mounted device (HMD) a visual-field image that is based on the first content data.

TECHNICAL FIELD

This disclosure relates to a technology for providing content, and more particularly, to a technology for providing content via a virtual reality space.

BACKGROUND

Regarding provision of content, there is known a method in which content is stored on a compact disc (CD), a digital versatile disc (DVD), or other recording medium, and the medium is provided. There is also known a technology in which content data is distributed by streaming. Recently, there has also been known a technology for providing content (hereinafter also referred to as “virtual reality (VR) content”) in a virtual reality space (also referred to as “virtual space”). When the content to be provided is digital data, there are problems such as copying and unauthorized use. To address such problems, for example, in Japanese Patent Application Laid-open No. 2003-187524 (Patent Document 1), there is described a technology for “providing a rental business system capable of preventing unauthorized use of information that is recorded on a computer recording medium and is capable of being played back, such as music and images, protecting the recorded information, and controlling rental conditions” (see “Abstract”).

PATENT DOCUMENT

SUMMARY

According to at least one embodiment of this disclosure, there is provided a method of providing content including: acquiring first information from an article, the first information identifying first content data to be managed by a server; acquiring second information from the article, the second information being used for authentication that an access request to the first content data is valid; transmitting the access request including the first information and the second information to the server; receiving the first content data from the server, the first content data being transmitted from the server in response to the server authenticating that the access request is valid by using the second information; and outputting to a head-mounted device (HMD) a visual-field image that is based on the first content data.

The above-mentioned and other objects, features, aspects, and advantages of this disclosure may be made clear from the following detailed description of this disclosure, which is to be understood in association with the attached drawings.

DETAILED DESCRIPTION

Now, with reference to the drawings, embodiments of this technical idea are described in detail. In the following description, like components are denoted by like reference symbols. The same applies to the names and functions of those components. Therefore, detailed description of those components is not repeated. In one or more embodiments described in this disclosure, components of respective embodiments can be combined with each other, and the combination also serves as a part of the embodiments described in this disclosure.

With reference toFIG. 1, a configuration of a head-mounted device (HMD) system100is described.FIG. 1is a diagram of a system100including a head-mounted display (HMD) according to at least one embodiment of this disclosure. The system100is usable for household use or for professional use.

The system100includes a server600, HMD sets110A,110B,110C, and110D, an external device700, and a network2. Each of the HMD sets110A,110B,110C, and110D is capable of independently communicating to/from the server600or the external device700via the network2. In some instances, the HMD sets110A,110B,110C, and110D are also collectively referred to as “HMD set110”. The number of HMD sets110constructing the HMD system100is not limited to four, but may be three or less, or five or more. The HMD set110includes an HMD120, a computer200, an HMD sensor410, a display430, and a controller300. The HMD120includes a monitor130, an eye gaze sensor140, a first camera150, a second camera160, a microphone170, and a speaker180. In at least one embodiment, the controller300includes a motion sensor420.

In at least one aspect, the computer200is connected to the network2, for example, the Internet, and is able to communicate to/from the server600or other computers connected to the network2in a wired or wireless manner. Examples of the other computers include a computer of another HMD set110or the external device700. In at least one aspect, the HMD120includes a sensor190instead of the HMD sensor410. In at least one aspect, the HMD120includes both sensor190and the HMD sensor410.

The HMD120is wearable on a head of a user5to display a virtual space to the user5during operation. More specifically, in at least one embodiment, the HMD120displays each of a right-eye image and a left-eye image on the monitor130. Each eye of the user5is able to visually recognize a corresponding image from the right-eye image and the left-eye image so that the user5may recognize a three-dimensional image based on the parallax of both of the user's the eyes. In at least one embodiment, the HMD120includes any one of a so-called head-mounted display including a monitor or a head-mounted device capable of mounting a smartphone or other terminals including a monitor.

The monitor130is implemented as, for example, a non-transmissive display device. In at least one aspect, the monitor130is arranged on a main body of the HMD120so as to be positioned in front of both the eyes of the user5. Therefore, when the user5is able to visually recognize the three-dimensional image displayed by the monitor130, the user5is immersed in the virtual space. In at least one aspect, the virtual space includes, for example, a background, objects that are operable by the user5, or menu images that are selectable by the user5. In at least one aspect, the monitor130is implemented as a liquid crystal monitor or an organic electroluminescence (EL) monitor included in a so-called smartphone or other information display terminals.

In at least one aspect, the monitor130is implemented as a transmissive display device. In this case, the user5is able to see through the HMD120covering the eyes of the user5, for example, smartglasses. In at least one embodiment, the transmissive monitor130is configured as a temporarily non-transmissive display device through adjustment of a transmittance thereof. In at least one embodiment, the monitor130is configured to display a real space and a part of an image constructing the virtual space simultaneously. For example, in at least one embodiment, the monitor130displays an image of the real space captured by a camera mounted on the HMD120, or may enable recognition of the real space by setting the transmittance of a part the monitor130sufficiently high to permit the user5to see through the HMD120.

In at least one aspect, the monitor130includes a sub-monitor for displaying a right-eye image and a sub-monitor for displaying a left-eye image. In at least one aspect, the monitor130is configured to integrally display the right-eye image and the left-eye image. In this case, the monitor130includes a high-speed shutter. The high-speed shutter operates so as to alternately display the right-eye image to the right of the user5and the left-eye image to the left eye of the user5, so that only one of the user's5eyes is able to recognize the image at any single point in time.

In at least one aspect, the HMD120includes a plurality of light sources (not shown). Each light source is implemented by, for example, a light emitting diode (LED) configured to emit an infrared ray. The HMD sensor410has a position tracking function for detecting the motion of the HMD120. More specifically, the HMD sensor410reads a plurality of infrared rays emitted by the HMD120to detect the position and the inclination of the HMD120in the real space.

In at least one aspect, the HMD sensor410is implemented by a camera. In at least one aspect, the HMD sensor410uses image information of the HMD120output from the camera to execute image analysis processing, to thereby enable detection of the position and the inclination of the HMD120.

In at least one aspect, the HMD120includes the sensor190instead of, or in addition to, the HMD sensor410as a position detector. In at least one aspect, the HMD120uses the sensor190to detect the position and the inclination of the HMD120. For example, in at least one embodiment, when the sensor190is an angular velocity sensor, a geomagnetic sensor, or an acceleration sensor, the HMD120uses any or all of those sensors instead of (or in addition to) the HMD sensor410to detect the position and the inclination of the HMD120. As an example, when the sensor190is an angular velocity sensor, the angular velocity sensor detects over time the angular velocity about each of three axes of the HMD120in the real space. The HMD120calculates a temporal change of the angle about each of the three axes of the HMD120based on each angular velocity, and further calculates an inclination of the HMD120based on the temporal change of the angles.

The eye gaze sensor140detects a direction in which the lines of sight of the right eye and the left eye of the user5are directed. That is, the eye gaze sensor140detects the line of sight of the user5. The direction of the line of sight is detected by, for example, a known eye tracking function. The eye gaze sensor140is implemented by a sensor having the eye tracking function. In at least one aspect, the eye gaze sensor140includes a right-eye sensor and a left-eye sensor. In at least one embodiment, the eye gaze sensor140is, for example, a sensor configured to irradiate the right eye and the left eye of the user5with an infrared ray, and to receive reflection light from the cornea and the iris with respect to the irradiation light, to thereby detect a rotational angle of each of the user's5eyeballs. In at least one embodiment, the eye gaze sensor140detects the line of sight of the user5based on each detected rotational angle.

The first camera150photographs a lower part of a face of the user5. More specifically, the first camera150photographs, for example, the nose or mouth of the user5. The second camera160photographs, for example, the eyes and eyebrows of the user5. A side of a casing of the HMD120on the user5side is defined as an interior side of the HMD120, and a side of the casing of the HMD120on a side opposite to the user5side is defined as an exterior side of the HMD120. In at least one aspect, the first camera150is arranged on an exterior side of the HMD120, and the second camera160is arranged on an interior side of the HMD120. Images generated by the first camera150and the second camera160are input to the computer200. In at least one aspect, the first camera150and the second camera160are implemented as a single camera, and the face of the user5is photographed with this single camera.

The microphone170converts an utterance of the user5into a voice signal (electric signal) for output to the computer200. The speaker180converts the voice signal into a voice for output to the user5. In at least one embodiment, the speaker180converts other signals into audio information provided to the user5. In at least one aspect, the HMD120includes earphones in place of the speaker180.

The controller300is connected to the computer200through wired or wireless communication. The controller300receives input of a command from the user5to the computer200. In at least one aspect, the controller300is held by the user5. In at least one aspect, the controller300is mountable to the body or a part of the clothes of the user5. In at least one aspect, the controller300is configured to output at least any one of a vibration, a sound, or light based on the signal transmitted from the computer200. In at least one aspect, the controller300receives from the user5an operation for controlling the position and the motion of an object arranged in the virtual space.

In at least one aspect, the controller300includes a plurality of light sources. Each light source is implemented by, for example, an LED configured to emit an infrared ray. The HMD sensor410has a position tracking function. In this case, the HMD sensor410reads a plurality of infrared rays emitted by the controller300to detect the position and the inclination of the controller300in the real space. In at least one aspect, the HMD sensor410is implemented by a camera. In this case, the HMD sensor410uses image information of the controller300output from the camera to execute image analysis processing, to thereby enable detection of the position and the inclination of the controller300.

In at least one aspect, the motion sensor420is mountable on the hand of the user5to detect the motion of the hand of the user5. For example, the motion sensor420detects a rotational speed, a rotation angle, and the number of rotations of the hand. The detected signal is transmitted to the computer200. The motion sensor420is provided to, for example, the controller300. In at least one aspect, the motion sensor420is provided to, for example, the controller300capable of being held by the user5. In at least one aspect, to help prevent accidently release of the controller300in the real space, the controller300is mountable on an object like a glove-type object that does not easily fly away by being worn on a hand of the user5. In at least one aspect, a sensor that is not mountable on the user5detects the motion of the hand of the user5. For example, a signal of a camera that photographs the user5may be input to the computer200as a signal representing the motion of the user5. As at least one example, the motion sensor420and the computer200are connected to each other through wired or wireless communication. In the case of wireless communication, the communication mode is not particularly limited, and for example, Bluetooth (trademark) or other known communication methods are usable.

The display430displays an image similar to an image displayed on the monitor130. With this, a user other than the user5wearing the HMD120can also view an image similar to that of the user5. An image to be displayed on the display430is not required to be a three-dimensional image, but may be a right-eye image or a left-eye image. For example, a liquid crystal display or an organic EL monitor may be used as the display430.

In at least one embodiment, the server600transmits a program to the computer200. In at least one aspect, the server600communicates to/from another computer200for providing virtual reality to the HMD120used by another user. For example, when a plurality of users play a participatory game, for example, in an amusement facility, each computer200communicates to/from another computer200via the server600with a signal that is based on the motion of each user, to thereby enable the plurality of users to enjoy a common game in the same virtual space. Each computer200may communicate to/from another computer200with the signal that is based on the motion of each user without intervention of the server600.

The external device700is any suitable device as long as the external device700is capable of communicating to/from the computer200. The external device700is, for example, a device capable of communicating to/from the computer200via the network2, or is a device capable of directly communicating to/from the computer200by near field communication or wired communication. Peripheral devices such as a smart device, a personal computer (PC), or the computer200are usable as the external device700, in at least one embodiment, but the external device700is not limited thereto.

[Hardware Configuration of Computer]

With reference toFIG. 2, the computer200in at least one embodiment is described.FIG. 2is a block diagram of a hardware configuration of the computer200according to at least one embodiment. The computer200includes, a processor210, a memory220, a storage230, an input/output interface240, and a communication interface250. Each component is connected to a bus260. In at least one embodiment, at least one of the processor210, the memory220, the storage230, the input/output interface240or the communication interface250is part of a separate structure and communicates with other components of computer200through a communication path other than the bus260.

The processor210executes a series of commands included in a program stored in the memory220or the storage230based on a signal transmitted to the computer200or in response to a condition determined in advance. In at least one aspect, the processor210is implemented as a central processing unit (CPU), a graphics processing unit (GPU), a micro-processor unit (MPU), a field-programmable gate array (FPGA), or other devices.

The memory220temporarily stores programs and data. The programs are loaded from, for example, the storage230. The data includes data input to the computer200and data generated by the processor210. In at least one aspect, the memory220is implemented as a random access memory (RAM) or other volatile memories.

The storage230permanently stores programs and data. In at least one embodiment, the storage230stores programs and data for a period of time longer than the memory220, but not permanently. The storage230is implemented as, for example, a read-only memory (ROM), a hard disk device, a flash memory, or other non-volatile storage devices. The programs stored in the storage230include programs for providing a virtual space in the system100, simulation programs, game programs, user authentication programs, and programs for implementing communication to/from other computers200. The data stored in the storage230includes data and objects for defining the virtual space.

In at least one aspect, the storage230is implemented as a removable storage device like a memory card. In at least one aspect, a configuration that uses programs and data stored in an external storage device is used instead of the storage230built into the computer200. With such a configuration, for example, in a situation in which a plurality of HMD systems100are used, for example in an amusement facility, the programs and the data are collectively updated.

The input/output interface240allows communication of signals among the HMD120, the HMD sensor410, the motion sensor420, and the display430. The monitor130, the eye gaze sensor140, the first camera150, the second camera160, the microphone170, and the speaker180included in the HMD120may communicate to/from the computer200via the input/output interface240of the HMD120. In at least one aspect, the input/output interface240is implemented with use of a universal serial bus (USB), a digital visual interface (DVI), a high-definition multimedia interface (HDMI) (trademark), or other terminals. The input/output interface240is not limited to the specific examples described above.

In at least one aspect, the input/output interface240further communicates to/from the controller300. For example, the input/output interface240receives input of a signal output from the controller300and the motion sensor420. In at least one aspect, the input/output interface240transmits a command output from the processor210to the controller300. The command instructs the controller300to, for example, vibrate, output a sound, or emit light. When the controller300receives the command, the controller300executes any one of vibration, sound output, and light emission in accordance with the command.

The communication interface250is connected to the network2to communicate to/from other computers (e.g., server600) connected to the network2. In at least one aspect, the communication interface250is implemented as, for example, a local area network (LAN), other wired communication interfaces, wireless fidelity (Wi-Fi), Bluetooth (R), near field communication (NFC), or other wireless communication interfaces. The communication interface250is not limited to the specific examples described above.

In at least one aspect, the processor210accesses the storage230and loads one or more programs stored in the storage230to the memory220to execute a series of commands included in the program. In at least one embodiment, the one or more programs includes an operating system of the computer200, an application program for providing a virtual space, and/or game software that is executable in the virtual space. The processor210transmits a signal for providing a virtual space to the HMD120via the input/output interface240. The HMD120displays a video on the monitor130based on the signal.

InFIG. 2, the computer200is outside of the HMD120, but in at least one aspect, the computer200is integral with the HMD120. As an example, a portable information communication terminal (e.g., smartphone) including the monitor130functions as the computer200in at least one embodiment.

In at least one embodiment, the computer200is used in common with a plurality of HMDs120. With such a configuration, for example, the computer200is able to provide the same virtual space to a plurality of users, and hence each user can enjoy the same application with other users in the same virtual space.

According to at least one embodiment of this disclosure, in the system100, a real coordinate system is set in advance. The real coordinate system is a coordinate system in the real space. The real coordinate system has three reference directions (axes) that are respectively parallel to a vertical direction, a horizontal direction orthogonal to the vertical direction, and a front-rear direction orthogonal to both of the vertical direction and the horizontal direction in the real space. The horizontal direction, the vertical direction (up-down direction), and the front-rear direction in the real coordinate system are defined as an x axis, a y axis, and a z axis, respectively. More specifically, the x axis of the real coordinate system is parallel to the horizontal direction of the real space, the y axis thereof is parallel to the vertical direction of the real space, and the z axis thereof is parallel to the front-rear direction of the real space.

In at least one aspect, the HMD sensor410includes an infrared sensor. When the infrared sensor detects the infrared ray emitted from each light source of the HMD120, the infrared sensor detects the presence of the HMD120. The HMD sensor410further detects the position and the inclination (direction) of the HMD120in the real space, which corresponds to the motion of the user5wearing the HMD120, based on the value of each point (each coordinate value in the real coordinate system). In more detail, the HMD sensor410is able to detect the temporal change of the position and the inclination of the HMD120with use of each value detected over time.

Each inclination of the HMD120detected by the HMD sensor410corresponds to an inclination about each of the three axes of the HMD120in the real coordinate system. The HMD sensor410sets a uvw visual-field coordinate system to the HMD120based on the inclination of the HMD120in the real coordinate system. The uvw visual-field coordinate system set to the HMD120corresponds to a point-of-view coordinate system used when the user5wearing the HMD120views an object in the virtual space.

With reference toFIG. 3, the uvw visual-field coordinate system is described.FIG. 3is a diagram of a uvw visual-field coordinate system to be set for the HMD120according to at least one embodiment of this disclosure. The HMD sensor410detects the position and the inclination of the HMD120in the real coordinate system when the HMD120is activated. The processor210sets the uvw visual-field coordinate system to the HMD120based on the detected values.

InFIG. 3, the HMD120sets the three-dimensional uvw visual-field coordinate system defining the head of the user5wearing the HMD120as a center (origin). More specifically, the HMD120sets three directions newly obtained by inclining the horizontal direction, the vertical direction, and the front-rear direction (x axis, y axis, and z axis), which define the real coordinate system, about the respective axes by the inclinations about the respective axes of the HMD120in the real coordinate system, as a pitch axis (u axis), a yaw axis (v axis), and a roll axis (w axis) of the uvw visual-field coordinate system in the HMD120.

In at least one aspect, when the user5wearing the HMD120is standing (or sitting) upright and is visually recognizing the front side, the processor210sets the uvw visual-field coordinate system that is parallel to the real coordinate system to the HMD120. In this case, the horizontal direction (x axis), the vertical direction (y axis), and the front-rear direction (z axis) of the real coordinate system directly match the pitch axis (u axis), the yaw axis (v axis), and the roll axis (w axis) of the uvw visual-field coordinate system in the HMD120, respectively.

After the uvw visual-field coordinate system is set to the HMD120, the HMD sensor410is able to detect the inclination of the HMD120in the set uvw visual-field coordinate system based on the motion of the HMD120. In this case, the HMD sensor410detects, as the inclination of the HMD120, each of a pitch angle (θu), a yaw angle (θv), and a roll angle (θw) of the HMD120in the uvw visual-field coordinate system. The pitch angle (θu) represents an inclination angle of the HMD120about the pitch axis in the uvw visual-field coordinate system. The yaw angle (θv) represents an inclination angle of the HMD120about the yaw axis in the uvw visual-field coordinate system. The roll angle (θw) represents an inclination angle of the HMD120about the roll axis in the uvw visual-field coordinate system.

The HMD sensor410sets, to the HMD120, the uvw visual-field coordinate system of the HMD120obtained after the movement of the HMD120based on the detected inclination angle of the HMD120. The relationship between the HMD120and the uvw visual-field coordinate system of the HMD120is constant regardless of the position and the inclination of the HMD120. When the position and the inclination of the HMD120change, the position and the inclination of the uvw visual-field coordinate system of the HMD120in the real coordinate system change in synchronization with the change of the position and the inclination.

In at least one aspect, the HMD sensor410identifies the position of the HMD120in the real space as a position relative to the HMD sensor410based on the light intensity of the infrared ray or a relative positional relationship between a plurality of points (e.g., distance between points), which is acquired based on output from the infrared sensor. In at least one aspect, the processor210determines the origin of the uvw visual-field coordinate system of the HMD120in the real space (real coordinate system) based on the identified relative position.

With reference toFIG. 4, the virtual space is further described.FIG. 4is a diagram of a mode of expressing a virtual space11according to at least one embodiment of this disclosure. The virtual space11has a structure with an entire celestial sphere shape covering a center12in all 360-degree directions. InFIG. 4, for the sake of clarity, only the upper-half celestial sphere of the virtual space11is included. Each mesh section is defined in the virtual space11. The position of each mesh section is defined in advance as coordinate values in an XYZ coordinate system, which is a global coordinate system defined in the virtual space11. The computer200associates each partial image forming a panorama image13(e.g., still image or moving image) that is developed in the virtual space11with each corresponding mesh section in the virtual space11.

In at least one aspect, in the virtual space11, the XYZ coordinate system having the center12as the origin is defined. The XYZ coordinate system is, for example, parallel to the real coordinate system. The horizontal direction, the vertical direction (up-down direction), and the front-rear direction of the XYZ coordinate system are defined as an X axis, a Y axis, and a Z axis, respectively. Thus, the X axis (horizontal direction) of the XYZ coordinate system is parallel to the x axis of the real coordinate system, the Y axis (vertical direction) of the XYZ coordinate system is parallel to the y axis of the real coordinate system, and the Z axis (front-rear direction) of the XYZ coordinate system is parallel to the z axis of the real coordinate system.

When the HMD120is activated, that is, when the HMD120is in an initial state, a virtual camera14is arranged at the center12of the virtual space11. In at least one embodiment, the virtual camera14is offset from the center12in the initial state. In at least one aspect, the processor210displays on the monitor130of the HMD120an image photographed by the virtual camera14. In synchronization with the motion of the HMD120in the real space, the virtual camera14similarly moves in the virtual space11. With this, the change in position and direction of the HMD120in the real space is reproduced similarly in the virtual space11.

The uvw visual-field coordinate system is defined in the virtual camera14similarly to the case of the HMD120. The uvw visual-field coordinate system of the virtual camera14in the virtual space11is defined to be synchronized with the uvw visual-field coordinate system of the HMD120in the real space (real coordinate system). Therefore, when the inclination of the HMD120changes, the inclination of the virtual camera14also changes in synchronization therewith. The virtual camera14can also move in the virtual space11in synchronization with the movement of the user5wearing the HMD120in the real space.

The processor210of the computer200defines a field-of-view region15in the virtual space11based on the position and inclination (reference line of sight16) of the virtual camera14. The field-of-view region15corresponds to, of the virtual space11, the region that is visually recognized by the user5wearing the HMD120. That is, the position of the virtual camera14determines a point of view of the user5in the virtual space11.

The line of sight of the user5detected by the eye gaze sensor140is a direction in the point-of-view coordinate system obtained when the user5visually recognizes an object. The uvw visual-field coordinate system of the HMD120is equal to the point-of-view coordinate system used when the user5visually recognizes the monitor130. The uvw visual-field coordinate system of the virtual camera14is synchronized with the uvw visual-field coordinate system of the HMD120. Therefore, in the system100in at least one aspect, the line of sight of the user5detected by the eye gaze sensor140can be regarded as the line of sight of the user5in the uvw visual-field coordinate system of the virtual camera14.

[User's Line of Sight]

With reference toFIG. 5, determination of the line of sight of the user5is described.FIG. 5is a plan view diagram of the head of the user5wearing the HMD120according to at least one embodiment of this disclosure.

In at least one aspect, the eye gaze sensor140detects lines of sight of the right eye and the left eye of the user5. In at least one aspect, when the user5is looking at a near place, the eye gaze sensor140detects lines of sight R1and L1. In at least one aspect, when the user5is looking at a far place, the eye gaze sensor140detects lines of sight R2and L2. In this case, the angles formed by the lines of sight R2and L2with respect to the roll axis w are smaller than the angles formed by the lines of sight R1and L1with respect to the roll axis w. The eye gaze sensor140transmits the detection results to the computer200.

When the computer200receives the detection values of the lines of sight R1and L1from the eye gaze sensor140as the detection results of the lines of sight, the computer200identifies a point of gaze N1being an intersection of both the lines of sight R1and L1based on the detection values. Meanwhile, when the computer200receives the detection values of the lines of sight R2and L2from the eye gaze sensor140, the computer200identifies an intersection of both the lines of sight R2and L2as the point of gaze. The computer200identifies a line of sight NO of the user5based on the identified point of gaze N1. The computer200detects, for example, an extension direction of a straight line that passes through the point of gaze N1and a midpoint of a straight line connecting a right eye R and a left eye L of the user5to each other as the line of sight NO. The line of sight NO is a direction in which the user5actually directs his or her lines of sight with both eyes. The line of sight N0corresponds to a direction in which the user5actually directs his or her lines of sight with respect to the field-of-view region15.

In at least one aspect, the system100includes a television broadcast reception tuner. With such a configuration, the system100is able to display a television program in the virtual space11.

In at least one aspect, the HMD system100includes a communication circuit for connecting to the Internet or has a verbal communication function for connecting to a telephone line or a cellular service.

With reference toFIG. 6andFIG. 7, the field-of-view region15is described.FIG. 6is a diagram of a YZ cross section obtained by viewing the field-of-view region15from an X direction in the virtual space11.FIG. 7is a diagram of an XZ cross section obtained by viewing the field-of-view region15from a Y direction in the virtual space11.

InFIG. 6, the field-of-view region15in the YZ cross section includes a region18. The region18is defined by the position of the virtual camera14, the reference line of sight16, and the YZ cross section of the virtual space11. The processor210defines a range of a polar angle α from the reference line of sight16serving as the center in the virtual space as the region18.

InFIG. 7, the field-of-view region15in the XZ cross section includes a region19. The region19is defined by the position of the virtual camera14, the reference line of sight16, and the XZ cross section of the virtual space11. The processor210defines a range of an azimuth β from the reference line of sight16serving as the center in the virtual space11as the region19. The polar angle α and β are determined in accordance with the position of the virtual camera14and the inclination (direction) of the virtual camera14.

In at least one aspect, the system100causes the monitor130to display a field-of-view image17based on the signal from the computer200, to thereby provide the field of view in the virtual space11to the user5. The field-of-view image17corresponds to apart of the panorama image13, which corresponds to the field-of-view region15. When the user5moves the HMD120worn on his or her head, the virtual camera14is also moved in synchronization with the movement. As a result, the position of the field-of-view region15in the virtual space11is changed. With this, the field-of-view image17displayed on the monitor130is updated to an image of the panorama image13, which is superimposed on the field-of-view region15synchronized with a direction in which the user5faces in the virtual space11. The user5can visually recognize a desired direction in the virtual space11.

In this way, the inclination of the virtual camera14corresponds to the line of sight of the user5(reference line of sight16) in the virtual space11, and the position at which the virtual camera14is arranged corresponds to the point of view of the user5in the virtual space11. Therefore, through the change of the position or inclination of the virtual camera14, the image to be displayed on the monitor130is updated, and the field of view of the user5is moved.

While the user5is wearing the HMD120(having a non-transmissive monitor130), the user5can visually recognize only the panorama image13developed in the virtual space11without visually recognizing the real world. Therefore, the system100provides a high sense of immersion in the virtual space11to the user5.

In at least one aspect, the processor210moves the virtual camera14in the virtual space11in synchronization with the movement in the real space of the user5wearing the HMD120. In this case, the processor210identifies an image region to be projected on the monitor130of the HMD120(field-of-view region15) based on the position and the direction of the virtual camera14in the virtual space11.

In at least one aspect, the virtual camera14includes two virtual cameras, that is, a virtual camera for providing a right-eye image and a virtual camera for providing a left-eye image. An appropriate parallax is set for the two virtual cameras so that the user5is able to recognize the three-dimensional virtual space11. In at least one aspect, the virtual camera14is implemented by a single virtual camera. In this case, a right-eye image and a left-eye image may be generated from an image acquired by the single virtual camera. In at least one embodiment, the virtual camera14is assumed to include two virtual cameras, and the roll axes of the two virtual cameras are synthesized so that the generated roll axis (w) is adapted to the roll axis (w) of the HMD120.

An example of the controller300is described with reference toFIG. 8AandFIG. 8B.FIG. 8Ais a diagram of a schematic configuration of a controller according to at least one embodiment of this disclosure.FIG. 8Bis a diagram of a coordinate system to be set for a hand of a user holding the controller according to at least one embodiment of this disclosure.

In at least one aspect, the controller300includes a right controller300R and a left controller (not shown). InFIG. 8Aonly right controller300R is shown for the sake of clarity. The right controller300R is operable by the right hand of the user5. The left controller is operable by the left hand of the user5. In at least one aspect, the right controller300R and the left controller are symmetrically configured as separate devices. Therefore, the user5can freely move his or her right hand holding the right controller300R and his or her left hand holding the left controller. In at least one aspect, the controller300may be an integrated controller configured to receive an operation performed by both the right and left hands of the user5. The right controller300R is now described.

The right controller300R includes a grip310, a frame320, and a top surface330. The grip310is configured so as to be held by the right hand of the user5. For example, the grip310may be held by the palm and three fingers (e.g., middle finger, ring finger, and small finger) of the right hand of the user5.

The grip310includes buttons340and350and the motion sensor420. The button340is arranged on a side surface of the grip310, and receives an operation performed by, for example, the middle finger of the right hand. The button350is arranged on a front surface of the grip310, and receives an operation performed by, for example, the index finger of the right hand. In at least one aspect, the buttons340and350are configured as trigger type buttons. The motion sensor420is built into the casing of the grip310. When a motion of the user5can be detected from the surroundings of the user5by a camera or other device. In at least one embodiment, the grip310does not include the motion sensor420.

The frame320includes a plurality of infrared LEDs360arranged in a circumferential direction of the frame320. The infrared LEDs360emit, during execution of a program using the controller300, infrared rays in accordance with progress of the program. The infrared rays emitted from the infrared LEDs360are usable to independently detect the position and the posture (inclination and direction) of each of the right controller300R and the left controller. InFIG. 8A, the infrared LEDs360are shown as being arranged in two rows, but the number of arrangement rows is not limited to that illustrated inFIG. 8. In at least one embodiment, the infrared LEDs360are arranged in one row or in three or more rows. In at least one embodiment, the infrared LEDs360are arranged in a pattern other than rows.

The top surface330includes buttons370and380and an analog stick390. The buttons370and380are configured as push type buttons. The buttons370and380receive an operation performed by the thumb of the right hand of the user5. In at least one aspect, the analog stick390receives an operation performed in any direction of 360 degrees from an initial position (neutral position). The operation includes, for example, an operation for moving an object arranged in the virtual space11.

In at least one aspect, each of the right controller300R and the left controller includes a battery for driving the infrared ray LEDs360and other members. The battery includes, for example, a rechargeable battery, a button battery, a dry battery, but the battery is not limited thereto. In at least one aspect, the right controller300R and the left controller are connectable to, for example, a USB interface of the computer200. In at least one embodiment, the right controller300R and the left controller do not include a battery.

InFIG. 8AandFIG. 8B, for example, a yaw direction, a roll direction, and a pitch direction are defined with respect to the right hand of the user5. A direction of an extended thumb is defined as the yaw direction, a direction of an extended index finger is defined as the roll direction, and a direction perpendicular to a plane is defined as the pitch direction.

[Hardware Configuration of Server]

With reference toFIG. 9, the server600in at least one embodiment is described.FIG. 9is a block diagram of a hardware configuration of the server600according to at least one embodiment of this disclosure. The server600includes a processor610, a memory620, a storage630, an input/output interface640, and a communication interface650. Each component is connected to a bus660. In at least one embodiment, at least one of the processor610, the memory620, the storage630, the input/output interface640or the communication interface650is part of a separate structure and communicates with other components of server600through a communication path other than the bus660.

The processor610executes a series of commands included in a program stored in the memory620or the storage630based on a signal transmitted to the server600or on satisfaction of a condition determined in advance. In at least one aspect, the processor610is implemented as a central processing unit (CPU), a graphics processing unit (GPU), a micro processing unit (MPU), a field-programmable gate array (FPGA), or other devices.

The memory620temporarily stores programs and data. The programs are loaded from, for example, the storage630. The data includes data input to the server600and data generated by the processor610. In at least one aspect, the memory620is implemented as a random access memory (RAM) or other volatile memories.

The storage630permanently stores programs and data. In at least one embodiment, the storage630stores programs and data for a period of time longer than the memory620, but not permanently. The storage630is implemented as, for example, a read-only memory (ROM), a hard disk device, a flash memory, or other non-volatile storage devices. The programs stored in the storage630include programs for providing a virtual space in the system100, simulation programs, game programs, user authentication programs, and programs for implementing communication to/from other computers200or servers600. The data stored in the storage630may include, for example, data and objects for defining the virtual space.

In at least one aspect, the storage630is implemented as a removable storage device like a memory card. In at least one aspect, a configuration that uses programs and data stored in an external storage device is used instead of the storage630built into the server600. With such a configuration, for example, in a situation in which a plurality of HMD systems100are used, for example, as in an amusement facility, the programs and the data are collectively updated.

The input/output interface640allows communication of signals to/from an input/output device. In at least one aspect, the input/output interface640is implemented with use of a USB, a DVI, an HDMI, or other terminals. The input/output interface640is not limited to the specific examples described above.

The communication interface650is connected to the network2to communicate to/from the computer200connected to the network2. In at least one aspect, the communication interface650is implemented as, for example, a LAN, other wired communication interfaces, Wi-Fi, Bluetooth, NFC, or other wireless communication interfaces. The communication interface650is not limited to the specific examples described above.

In at least one aspect, the processor610accesses the storage630and loads one or more programs stored in the storage630to the memory620to execute a series of commands included in the program. In at least one embodiment, the one or more programs include, for example, an operating system of the server600, an application program for providing a virtual space, and game software that can be executed in the virtual space. In at least one embodiment, the processor610transmits a signal for providing a virtual space to the HMD device110to the computer200via the input/output interface640.

[Control Device of HMD]

With reference toFIG. 10, the control device of the HMD120is described. According to at least one embodiment of this disclosure, the control device is implemented by the computer200having a known configuration.FIG. 10is a block diagram of the computer200according to at least one embodiment of this disclosure.FIG. 10includes a module configuration of the computer200.

InFIG. 10, the computer200includes a control module510, a rendering module520, a memory module530, and a communication control module540. In at least one aspect, the control module510and the rendering module520are implemented by the processor210. In at least one aspect, a plurality of processors210function as the control module510and the rendering module520. The memory module530is implemented by the memory220or the storage230. The communication control module540is implemented by the communication interface250.

The control module510controls the virtual space11provided to the user5. The control module510defines the virtual space11in the HMD system100using virtual space data representing the virtual space11. The virtual space data is stored in, for example, the memory module530. In at least one embodiment, the control module510generates virtual space data. In at least one embodiment, the control module510acquires virtual space data from, for example, the server600.

The control module510arranges objects in the virtual space11using object data representing objects. The object data is stored in, for example, the memory module530. In at least one embodiment, the control module510generates virtual space data. In at least one embodiment, the control module510acquires virtual space data from, for example, the server600. In at least one embodiment, the objects include, for example, an avatar object of the user5, character objects, operation objects, for example, a virtual hand to be operated by the controller300, and forests, mountains, other landscapes, streetscapes, or animals to be arranged in accordance with the progression of the story of the game.

The control module510arranges an avatar object of the user5of another computer200, which is connected via the network2, in the virtual space11. In at least one aspect, the control module510arranges an avatar object of the user5in the virtual space11. In at least one aspect, the control module510arranges an avatar object simulating the user5in the virtual space11based on an image including the user5. In at least one aspect, the control module510arranges an avatar object in the virtual space11, which is selected by the user5from among a plurality of types of avatar objects (e.g., objects simulating animals or objects of deformed humans).

The control module510identifies an inclination of the HMD120based on output of the HMD sensor410. In at least one aspect, the control module510identifies an inclination of the HMD120based on output of the sensor190functioning as a motion sensor. The control module510detects parts (e.g., mouth, eyes, and eyebrows) forming the face of the user5from a face image of the user5generated by the first camera150and the second camera160. The control module510detects a motion (shape) of each detected part.

The control module510detects a line of sight of the user5in the virtual space11based on a signal from the eye gaze sensor140. The control module510detects a point-of-view position (coordinate values in the XYZ coordinate system) at which the detected line of sight of the user5and the celestial sphere of the virtual space11intersect with each other. More specifically, the control module510detects the point-of-view position based on the line of sight of the user5defined in the uvw coordinate system and the position and the inclination of the virtual camera14. The control module510transmits the detected point-of-view position to the server600. In at least one aspect, the control module510is configured to transmit line-of-sight information representing the line of sight of the user5to the server600. In such a case, the control module510may calculate the point-of-view position based on the line-of-sight information received by the server600.

The control module510translates a motion of the HMD120, which is detected by the HMD sensor410, in an avatar object. For example, the control module510detects inclination of the HMD120, and arranges the avatar object in an inclined manner. The control module510translates the detected motion of face parts in a face of the avatar object arranged in the virtual space11. The control module510receives line-of-sight information of another user5from the server600, and translates the line-of-sight information in the line of sight of the avatar object of another user5. In at least one aspect, the control module510translates a motion of the controller300in an avatar object and an operation object. In this case, the controller300includes, for example, a motion sensor, an acceleration sensor, or a plurality of light emitting elements (e.g., infrared LEDs) for detecting a motion of the controller300.

The control module510arranges, in the virtual space11, an operation object for receiving an operation by the user5in the virtual space11. The user5operates the operation object to, for example, operate an object arranged in the virtual space11. In at least one aspect, the operation object includes, for example, a hand object serving as a virtual hand corresponding to a hand of the user5. In at least one aspect, the control module510moves the hand object in the virtual space11so that the hand object moves in association with a motion of the hand of the user5in the real space based on output of the motion sensor420. In at least one aspect, the operation object may correspond to a hand part of an avatar object.

When one object arranged in the virtual space11collides with another object, the control module510detects the collision. The control module510is able to detect, for example, a timing at which a collision area of one object and a collision area of another object have touched with each other, and performs predetermined processing in response to the detected timing. In at least one embodiment, the control module510detects a timing at which an object and another object, which have been in contact with each other, have moved away from each other, and performs predetermined processing in response to the detected timing. In at least one embodiment, the control module510detects a state in which an object and another object are in contact with each other. For example, when an operation object touches another object, the control module510detects the fact that the operation object has touched the other object, and performs predetermined processing.

In at least one aspect, the control module510controls image display of the HMD120on the monitor130. For example, the control module510arranges the virtual camera14in the virtual space11. The control module510controls the position of the virtual camera14and the inclination (direction) of the virtual camera14in the virtual space11. The control module510defines the field-of-view region15depending on an inclination of the head of the user5wearing the HMD120and the position of the virtual camera14. The rendering module520generates the field-of-view region17to be displayed on the monitor130based on the determined field-of-view region15. The communication control module540outputs the field-of-view region17generated by the rendering module520to the HMD120.

The control module510, which has detected an utterance of the user5using the microphone170from the HMD120, identifies the computer200to which voice data corresponding to the utterance is to be transmitted. The voice data is transmitted to the computer200identified by the control module510. The control module510, which has received voice data from the computer200of another user via the network2, outputs audio information (utterances) corresponding to the voice data from the speaker180.

The memory module530holds data to be used to provide the virtual space11to the user5by the computer200. In at least one aspect, the memory module530stores space information, object information, and user information.

The space information stores one or more templates defined to provide the virtual space11.

The object information stores a plurality of panorama images13forming the virtual space11and object data for arranging objects in the virtual space11. In at least one embodiment, the panorama image13contains a still image and/or a moving image. In at least one embodiment, the panorama image13contains an image in a non-real space and/or an image in the real space. An example of the image in a non-real space is an image generated by computer graphics.

The user information stores a user ID for identifying the user5. The user ID is, for example, an internet protocol (IP) address or a media access control (MAC) address set to the computer200used by the user. In at least one aspect, the user ID is set by the user. The user information stores, for example, a program for causing the computer200to function as the control device of the HMD system100.

The data and programs stored in the memory module530are input by the user5of the HMD120. Alternatively, the processor210downloads the programs or data from a computer (e.g., server600) that is managed by a business operator providing the content, and stores the downloaded programs or data in the memory module530.

In at least one embodiment, the communication control module540communicates to/from the server600or other information communication devices via the network2.

In at least one aspect, the control module510and the rendering module520are implemented with use of, for example, Unity (R) provided by Unity Technologies. In at least one aspect, the control module510and the rendering module520are implemented by combining the circuit elements for implementing each step of processing.

The processing performed in the computer200is implemented by hardware and software executed by the processor410. In at least one embodiment, the software is stored in advance on a hard disk or other memory module530. In at least one embodiment, the software is stored on a CD-ROM or other computer-readable non-volatile data recording media, and distributed as a program product. In at least one embodiment, the software may is provided as a program product that is downloadable by an information provider connected to the Internet or other networks. Such software is read from the data recording medium by an optical disc drive device or other data reading devices, or is downloaded from the server600or other computers via the communication control module540and then temporarily stored in a storage module. The software is read from the storage module by the processor210, and is stored in a RAM in a format of an executable program. The processor210executes the program.

With reference toFIG. 11, the control structure of the HMD set110is described.FIG. 11is a sequence chart of processing to be executed by the system100according to at least one embodiment of this disclosure.

InFIG. 11, in Step S1110, the processor210of the computer200serves as the control module510to identify virtual space data and define the virtual space11.

In Step S1120, the processor210initializes the virtual camera14. For example, in a work area of the memory, the processor210arranges the virtual camera14at the center12defined in advance in the virtual space11, and matches the line of sight of the virtual camera14with the direction in which the user5faces.

In Step S1130, the processor210serves as the rendering module520to generate field-of-view image data for displaying an initial field-of-view image. The generated field-of-view image data is output to the HMD120by the communication control module540.

In Step S1132, the monitor130of the HMD120displays the field-of-view image based on the field-of-view image data received from the computer200. The user5wearing the HMD120is able to recognize the virtual space11through visual recognition of the field-of-view image.

In Step S1134, the HMD sensor410detects the position and the inclination of the HMD120based on a plurality of infrared rays emitted from the HMD120. The detection results are output to the computer200as motion detection data.

In Step S1140, the processor210identifies a field-of-view direction of the user5wearing the HMD120based on the position and inclination contained in the motion detection data of the HMD120.

In Step S1150, the processor210executes an application program, and arranges an object in the virtual space11based on a command contained in the application program.

In Step S1160, the controller300detects an operation by the user5based on a signal output from the motion sensor420, and outputs detection data representing the detected operation to the computer200. In at least one aspect, an operation of the controller300by the user5is detected based on an image from a camera arranged around the user5.

In Step S1170, the processor210detects an operation of the controller300by the user5based on the detection data acquired from the controller300.

In Step S1180, the processor210generates field-of-view image data based on the operation of the controller300by the user5.

The communication control module540outputs the generated field-of-view image data to the HMD120.

In Step S1190, the HMD120updates a field-of-view image based on the received field-of-view image data, and displays the updated field-of-view image on the monitor130.

With reference toFIG. 12AandFIG. 12B, an avatar object according to at least one embodiment is described.FIG. 12andFIG. 12Bare diagrams of avatar objects of respective users5of the HMD sets110A and110B. In the following, the user of the HMD set110A, the user of the HMD set110B, the user of the HMD set110C, and the user of the HMD set110D are referred to as “user5A”, “user5B”, “user5C”, and “user5D”, respectively. A reference numeral of each component related to the HMD set110A, a reference numeral of each component related to the HMD set110B, a reference numeral of each component related to the HMD set110C, and a reference numeral of each component related to the HMD set110D are appended by A, B, C, and D, respectively. For example, the HMD120A is included in the HMD set110A.

FIG. 12Ais a schematic diagram of HMD systems of several users sharing the virtual space interact using a network according to at least one embodiment of this disclosure. Each HMD120provides the user5with the virtual space11. Computers200A to200D provide the users5A to5D with virtual spaces11A to11D via HMDs120A to120D, respectively. InFIG. 12A, the virtual space11A and the virtual space11B are formed by the same data. In other words, the computer200A and the computer200B share the same virtual space. An avatar object6A of the user5A and an avatar object6B of the user5B are present in the virtual space11A and the virtual space11B. The avatar object6A in the virtual space11A and the avatar object6B in the virtual space11B each wear the HMD120. However, the inclusion of the HMD120A and HMD120B is only for the sake of simplicity of description, and the avatars do not wear the HMD120A and HMD120B in the virtual spaces11A and11B, respectively.

In at least one aspect, the processor210A arranges a virtual camera14A for photographing a field-of-view region17A of the user5A at the position of eyes of the avatar object6A.

FIG. 12Bis a diagram of a field of view of a HMD according to at least one embodiment of this disclosure.FIG. 12(B)corresponds to the field-of-view region17A of the user5A inFIG. 12A. The field-of-view region17A is an image displayed on a monitor130A of the HMD120A. This field-of-view region17A is an image generated by the virtual camera14A. The avatar object6B of the user5B is displayed in the field-of-view region17A. Although not included inFIG. 12B, the avatar object6A of the user5A is displayed in the field-of-view image of the user5B.

In the arrangement inFIG. 12B, the user5A can communicate to/from the user5B via the virtual space11A through conversation. More specifically, voices of the user5A acquired by a microphone170A are transmitted to the HMD120B of the user5B via the server600and output from a speaker180B provided on the HMD120B. Voices of the user5B are transmitted to the HMD120A of the user5A via the server600, and output from a speaker180A provided on the HMD120A.

The processor210A translates an operation by the user5B (operation of HMD120B and operation of controller300B) in the avatar object6B arranged in the virtual space11A. With this, the user5A is able to recognize the operation by the user5B through the avatar object6B.

FIG. 13is a sequence chart of processing to be executed by the system100according to at least one embodiment of this disclosure. InFIG. 13, although the HMD set110D is not included, the HMD set110D operates in a similar manner as the HMD sets110A,110B, and110C. Also in the following description, a reference numeral of each component related to the HMD set110A, a reference numeral of each component related to the HMD set110B, a reference numeral of each component related to the HMD set110C, and a reference numeral of each component related to the HMD set110D are appended by A, B, C, and D, respectively.

In Step S1310A, the processor210A of the HMD set110A acquires avatar information for determining a motion of the avatar object6A in the virtual space11A. This avatar information contains information on an avatar such as motion information, face tracking data, and sound data. The motion information contains, for example, information on a temporal change in position and inclination of the HMD120A and information on a motion of the hand of the user5A, which is detected by, for example, a motion sensor420A. An example of the face tracking data is data identifying the position and size of each part of the face of the user5A. Another example of the face tracking data is data representing motions of parts forming the face of the user5A and line-of-sight data. An example of the sound data is data representing sounds of the user5A acquired by the microphone170A of the HMD120A. In at least one embodiment, the avatar information contains information identifying the avatar object6A or the user5A associated with the avatar object6A or information identifying the virtual space11A accommodating the avatar object6A. An example of the information identifying the avatar object6A or the user5A is a user ID. An example of the information identifying the virtual space11A accommodating the avatar object6A is a room ID. The processor210A transmits the avatar information acquired as described above to the server600via the network2.

In Step S1310B, the processor210B of the HMD set110B acquires avatar information for determining a motion of the avatar object6B in the virtual space11B, and transmits the avatar information to the server600, similarly to the processing of Step S1310A. Similarly, in Step S1310C, the processor210C of the HMD set110C acquires avatar information for determining a motion of the avatar object6C in the virtual space11C, and transmits the avatar information to the server600.

In Step S1320, the server600temporarily stores pieces of player information received from the HMD set110A, the HMD set110B, and the HMD set110C, respectively. The server600integrates pieces of avatar information of all the users (in this example, users5A to5C) associated with the common virtual space11based on, for example, the user IDs and room IDs contained in respective pieces of avatar information. Then, the server600transmits the integrated pieces of avatar information to all the users associated with the virtual space11at a timing determined in advance. In this manner, synchronization processing is executed. Such synchronization processing enables the HMD set110A, the HMD set110B, and the HMD120C to share mutual avatar information at substantially the same timing.

Next, the HMD sets110A to110C execute processing of Step S1330A to Step S1330C, respectively, based on the integrated pieces of avatar information transmitted from the server600to the HMD sets110A to110C. The processing of Step S1330A corresponds to the processing of Step S1180ofFIG. 11.

In Step S1330A, the processor210A of the HMD set110A updates information on the avatar object6B and the avatar object6C of the other users5B and5C in the virtual space11A. Specifically, the processor210A updates, for example, the position and direction of the avatar object6B in the virtual space11based on motion information contained in the avatar information transmitted from the HMD set110B. For example, the processor210A updates the information (e.g., position and direction) on the avatar object6B contained in the object information stored in the memory module530. Similarly, the processor210A updates the information (e.g., position and direction) on the avatar object6C in the virtual space11based on motion information contained in the avatar information transmitted from the HMD set110C.

In Step S1330B, similarly to the processing of Step S1330A, the processor210B of the HMD set110B updates information on the avatar object6A and the avatar object6C of the users5A and5C in the virtual space11B. Similarly, in Step S1330C, the processor210C of the HMD set110C updates information on the avatar object6A and the avatar object6B of the users5A and5B in the virtual space11C.

A configuration of the smartphone1480is now described with reference toFIG. 14.FIG. 14is a block diagram for illustrating a hardware configuration of the smartphone1480. The smartphone1480includes a central processing unit (CPU)1450, an antenna1451, a communication device1452, an input switch1453, a camera1454, a flash memory1455, a random access memory (RAM)1456, a read-only memory (ROM)1457, a memory card drive device1458, a microphone1461, a speaker1462, a sound signal processing circuit1460, a monitor1463, a light emitting diode (LED)1464, a communication interface1465, a vibrator1466, a global positioning system (GPS) antenna1468, a GPS module1467, an acceleration sensor1469, and a geomagnetic sensor1470. A memory card1459may be mounted to the memory card drive device1458.

The antenna1451is configured to receive a signal emitted by a base station, and to transmit a signal for communicating to/from another communication device via the base station. The signal received by the antenna1451is subjected to front-end processing by the communication device1452, and the processed signal is transmitted to the CPU1450.

The CPU1450is configured to execute processing for controlling a motion of the smartphone1480based on a command issued to the smartphone1480. When the smartphone1480receives a signal, the CPU1450executes processing defined in advance based on a signal transmitted from the communication device1452, and transmits the processed signal to the sound signal processing circuit1460. The sound signal processing circuit1460is configured to execute signal processing defined in advance on the signal, and to transmit the processed signal to the speaker1462. The speaker1462is configured to output a voice based on that signal.

The input switch1453is configured to receive input of a command to the smartphone1480. The input switch1453is implemented by a touch sensor or a button arranged on a body of the smartphone1480. A signal in accordance with the input command is input to the CPU1450.

The microphone1461is configured to receive sound spoken into the smartphone1480, and to transmit a signal corresponding to the spoken sound to the sound signal processing circuit1460. The sound signal processing circuit1460executes processing defined in advance in order to perform verbal communication based on that signal, and transmits the processed signal to the CPU1450. The CPU1450converts the signal into data for transmission, and transmits the converted data to the communication device1452. The communication device1452uses that data to generate a signal for transmission, and transmits the signal to the antenna1451.

The flash memory1455is configured to store the data transmitted from the CPU1450. The CPU1450reads out the data stored in the flash memory1455, and executes processing defined in advance by using that data.

The RAM1456is configured to temporarily store data generated by the CPU1450based on an operation performed on the input switch1453. The ROM1457is configured to store a program or data for causing the smartphone1480to execute an operation determined in advance. The CPU1450reads out the program or data from the ROM1457to control the operation of the smartphone1480.

The memory card drive device1458is configured to read out data stored in the memory card1459, and to transmit the read data to the CPU1450. The memory card drive device1458is also configured to write data output by the CPU1450in a storage area of the memory card1459.

The sound signal processing circuit1460is configured to execute signal processing for performing verbal communication like that described above. In at least one embodiment, there is illustrated a configuration in which the CPU1450and the sound signal processing circuit1460are separate is exemplified, but in at least one aspect, the CPU1450and the sound signal processing circuit1460are integrated.

The monitor1463is a touch-operation type monitor. However, the mechanism for receiving the touch operation is not particularly limited. The monitor1463is configured to display, based on data acquired from the CPU1450, an image defined by the data. For example, the monitor1463displays a still image, a moving image, a map, and the like stored in the flash memory1455.

The LED1464is configured to emit light based on a signal output from the CPU1450. The communication interface1465is implemented by, for example, Wi-Fi, Bluetooth (trademark), or near field communication (NFC). In at least one aspect, a cable for data communication is mounted to the communication interface1465. The communication interface1465is configured to emit a signal output from the CPU1450. The communication interface1465may also be configured to transmit to the CPU1450data included in a signal received from outside the smartphone1480. In at least one aspect, when the smartphone1480is mounted to the HMD120, the communication interface1465is able to communicate to/from the communication interface of the HMD120.

The vibrator1466is configured to execute a vibrating motion at a frequency determined in advance based on a signal output from the CPU1450.

The GPS antenna1468is configured to receive GPS signals transmitted from four or more satellites. Each of the received GPS signals is input to the GPS module1467. The GPS module1467is configured to acquire position information on the smartphone1480by using each GPS signal and a known technology to execute positioning processing.

The acceleration sensor1469is configured to detect acceleration acting on the smartphone1480. In at least one aspect, the acceleration sensor1469is implemented as a three-axis acceleration sensor. The detected acceleration is input to the CPU1450. The CPU1450detects a movement and a posture (inclination) of the smartphone1480based on the input acceleration.

The geomagnetic sensor1470is configured to detect the direction in which the smartphone1480is facing. Information acquired by the detection is input to the CPU1450.

There is now described an outline of a specific example of at least one embodiment of this disclosure. A two-dimensional code (e.g., QR code (trademark)) including information for accessing VR content is marked on a good. The good relates to, for example, a character appearing in the VR content. Examples of the good include, but are not limited to, mugs, T-shirts, cards, CD cases, and clear folders. However, there are goods that cannot be marked with a two-dimensional code, and hence a ticket printed with the two-dimensional code may be sold. The good or ticket may be sold in the same way as existing operations in the shop. It is not always required for the good to relate to a character, and the good may be a general product. In this case, as a sales promotion of the good, the two-dimensional code may be marked on the good. For example, there is expected a case in which the two-dimensional code is marked on a cap or body of a plastic beverage bottle.

In the shop, a VR headset is prepared. As one mode of the VR headset, a mode in which a smartphone having a camera is mounted to the HMD is conceivable. The VR headset may photograph the outside of the VR headset when used.

When the user visiting the shop puts on the VR headset, the camera of the smartphone is activated, and an image photographed by the camera, namely, an image in front of the user, is displayed on the HMD monitor (e.g., smartphone monitor). Therefore, in a state in which the user is wearing the HMD, the user is able to view the real world through the photographed image of the camera in a see-through manner.

In a state in which the user is wearing the HMD, when the two-dimensional code is read by the camera, the data on the VR content is distributed by streaming from the server to the computer connected to the HMD. When this data is further transmitted to the smartphone, the monitor begins to display the VR content.

The user knows how to perform the operation of reading the two-dimensional code with the camera of the smartphone, and hence the VR content may be played back without asking the shop staff (without adding an operation for using the VR headset).

During playback of the VR content, an opportunity to take a photograph is provided to the user. When the user is photographing a desired scene, the smartphone stores the two-dimensional code read in order to play back VR content and the photographed image in association with each other. After watching the VR content and the user has removed the smartphone from the HMD, the user is able to browse the photographed images by using a smartphone application or the like.

At least one aspect of this disclosure is now described with reference toFIG. 15AtoFIG. 15D.FIG. 15AtoFIG. 15Dare diagrams of transitions of the screen displayed on the monitor1463according to at least one embodiment of this disclosure. The monitor1463corresponds to, for example, a monitor incorporated in the HMD, a smartphone mounted to the HMD, or a monitor of another information terminal.

InFIG. 15A, in at least one aspect, the monitor1463displays a to-be-photographed image of the two-dimensional code. When the access information included in the two-dimensional code is extracted, communication is performed between the terminal to which the monitor1463is connected and the management server of the VR content, and the access information is transmitted from the terminal to the management server. The access information includes a content ID, a content authentication number, a validity period, and the like. In order to prevent unauthorized use of the access information and improve the accuracy of authentication, position information on the terminal from which the information has been extracted from the two-dimensional code may be transmitted to the management server. When it is confirmed that the information is valid information, the management server transmits to the terminal a message to be shown before playing back the VR content associated with the two-dimensional code. InFIG. 15B, the monitor1463displays the message.

Output of the VR content (e.g., playback of video and output of sound) then starts. For example, inFIG. 15C, the monitor1463displays an image of the VR content downloaded based on the two-dimensional code. During the playback of the VR content, the user of the monitor1463may photograph the image of the VR content. The photographed image may be stored on the terminal. The location of the content data (e.g., frame number) at which photography was performed is transmitted together with the ID of the user to the server by the terminal. In this case, the server may accumulate user IDs, VR content identification numbers, and frame numbers in the database in association with each other.

InFIG. 15D, when the playback of the VR content finishes, the monitor1463displays a message such as “Come again”. Then, inFIG. 15E, the monitor1463displays the date and time at which the image was photographed during the playback of the VR content and the image of the VR content photographed at that time.

First Embodiment

A first embodiment of this disclosure is now described. In the first embodiment, the two-dimensional code marked on the good includes access information. The access information is used to access the VR content.

The HMD system100described with reference toFIG. 1functions as a content providing system that uses an HMD. In at least one aspect, the HMD system100is arranged in shops, amusement facilities, and the like. In the first embodiment, the HMD is any one of a so-called head-mounted display having a monitor and a head-mounted device to which a smartphone or other terminals having a monitor may be mounted. There is now mainly described a case in which a smartphone is attachable to and detachable from a head-mounted device.

When the HMD system100is used in a shop, the user5wearing the HMD120is able to visually recognize a mug1641sold at the shop as a video displayed on the monitor1463. A two-dimensional code (e.g., QR code (trademark)) is marked on the mug1641.

The monitor1463is implemented, for example, as a non-transmissive display device. In at least one aspect, the monitor1463is arranged in advance in the main body of the HMD120so as to be positioned in front of both eyes of the user. Therefore, when the user visually recognizes the three-dimensional image displayed on the monitor1463, the user is able to be immersed in the virtual space. In at least one embodiment, the virtual space includes, for example, a background, an object operable by the user, and an image of a menu selectable by user. In at least one embodiment, when the HMD120is a structure to which a so-called smartphone or other information display terminal is mounted, the monitor1463is implemented as a liquid crystal monitor or an organic electroluminescence (EL) monitor included in the information display terminal.

In at least one aspect, the monitor1463includes a sub-monitor for displaying an image for the right eye and a sub-monitor for displaying an image for the left eye. In at least one aspect, the monitor1463is configured to display the image for the right eye and the image for the left eye in an integrated manner. In this case, the monitor1463includes a high-speed shutter. The high-speed shutter operates such that the image for the right eye and the image for the left eye are alternately displayed so that an image is recognized in only one eye.

The actions of the user5, motion of the HMD120, and the behavior of the character of the VR content are now described with reference toFIG. 17.FIG. 17is a diagram of motion performed by the HMD120when the user5enjoys VR content according to the first embodiment of this disclosure.

The user5visits a shop and purchases the mug1641or another good (Step S1710). Then, the user5mounts the smartphone1480owned by himself or herself to the HMD120(Step S1712). When the user5operates the smartphone1480in accordance with a procedure determined in advance, an application for receiving the provision of VR content is activated. When execution of the application starts, the HMD120displays a message such as “Put on HMD” on the monitor1463of the smartphone1480, or outputs a sound (Step S1714).

The user5wearing the HMD120activates the camera application of the smartphone1480, and photographs a two-dimensional code1642marked on the purchased good (e.g., mug1641) (Step S1720).

The HMD120accesses the server600via the smartphone1480and the computer200(Step S1722). The smartphone1480transmits the image data obtained by photography to the server600. Then, the VR content is downloaded to the HMD120from the server600.

When the character of the VR content is displayed on the monitor1463, the monitor1463displays a message, for example, “Thank you for coming to the library today” (Step S1724). At this time, a speaker (not shown) included in the HMD120may output the message as a sound based on a sound signal output from the smartphone1480.

The HMD120displays a message or outputs a sound, for example, “Move your head to try and move the white circle in front of your eyes” (Step S1730). The user5moves his or her head while wearing the HMD120on the head (Step S1732). The HMD120then displays a message, for example, “Try to move the white circle here”, and outputs a sound (Step S1740). The user5moves his or her head on which the HMD120is worn, moves the white circle to a predetermined place, and selects the start screen (Step S1742).

When the playback of the VR content starts, the HMD120displays a message, for example, “You can take a photograph only once during the performance” (Step S1750). The HMD120further displays a message, for example, “There is a touch panel here on the headset, touch it” (Step S1752). The HMD120then displays a message, for example, “You can take a photograph only once during the live show. Do not miss the best shot” (Step S1754). Then, the HMD120displays a message, for example, “OK, preparation now complete” (StepS1756), and starts playback of the VR content.

When the VR content is displayed on the monitor1463, the character of the VR content displays a message or outputs a sound, for example, “Enjoy the live show” (Step S1758).

While the VR content is being played back, the HMD120displays a message, for example, “LIVE” at, for example, a corner of the screen (Step S1760). During playback of the VR content, the user5is able to photograph a live show scene a number of times determined in advance for each piece of VR content (Step S1770). The playback scene may be freely selectable by the user5or may be determined in advance. There may also be recommended a scene matching a preference of the user5. When the playback of the VR content ends, the character of the VR content displays a message, for example, “Thank you for coming to the library today” (Step S1772). The character also displays a message, for example, “Please come again” (Step S1774).

The user5removes the HMD120from his or her head (Step S1788). The user then registers a serial number displayed when the two-dimensional code is read and personal information on the user in the website providing the VR content (Step S1780). For example, when the user5accesses a link destination displayed on the monitor1463, the serial number and the personal information are transmitted to the server600.

[Detailed Configuration of Modules]

The module configuration of the computer200is now described in detail with reference toFIG. 18.FIG. 18is a block diagram of a detailed configuration of modules of the computer200according to at least one embodiment of this disclosure.

InFIG. 18, the control module510includes a virtual camera control module1421, a field-of-view region determination module1422, a reference-line-of-sight identification module1423, an authentication module1424, a content playback module1425, a virtual space definition module1426, a virtual object generation module1427, and a controller management module1428. The rendering module520includes a field-of-view image generation module1429. The memory module530stores space information1431, user information1432, and content1433.

In at least one aspect, the control module510controls display of images on the monitor1463of the HMD120. The virtual camera control module1421arranges the virtual camera14in the virtual space11, and controls the behavior, the direction, and the like of the virtual camera14. The field-of-view region determination module1422defines the field-of-view region15in accordance with the direction of the head of the user wearing the HMD120. The field-of-view image generation module1429generates the field-of-view image17to be displayed on the monitor1463based on the determined field-of-view region15.

The reference line-of-sight identification module1423identifies the line of sight of the user5based on the signal from the eye gaze sensor140.

The authentication module1424determines, based on the data transmitted from the HMD120and the data transmitted from the server600, whether the data transmitted from the HMD120is legitimate data registered in advance. In this case, legitimate data is, for example, identification data of moving image content or other VR content prepared in advance.

The content playback module1425plays back the content data transmitted from the server600, and transmits the content data to the HMD120as a streaming video.

The control module510controls the virtual space11provided to the user5. The virtual space definition module1426defines the virtual space11in the HMD system100by generating virtual space data representing the virtual space11. The virtual object generation module1427may generate a target object to be arranged in the virtual space11.

The controller management module1428receives a motion of the user5in the virtual space11, and controls the controller object in accordance with the motion. The controller object according to at least one embodiment functions as a controller for issuing instructions to the other objects arranged in the virtual space11. In at least one aspect, the controller management module1428generates data for arranging in the virtual space11the controller object for receiving control in the virtual space11. When the HMD120receives this data, the monitor1463may display the controller object.

The memory module530stores data to be used by the computer200to provide the virtual space11to the user5. In at least one aspect, the memory module530stores the space information1431, the user information1432, and the content1433.

The space information1431stores one or more templates defined in order to provide the virtual space11. The user information1432includes the identification information on the user5of the HMD120, an authority associated with the user5, and the like. The authority includes, for example, account information (user ID and password) and the like for accessing the website providing the application. The content1433includes, for example, the VR content presented by the HMD120.

The data structure of the server600is now described with reference toFIG. 19.FIG. 19is a schematic diagram of one mode of storage of data in the storage630included in the server600according to at least one embodiment of this disclosure. The storage630stores tables1910,1920,1930,1940, and1950.

The table1910includes a content ID1911, content data1912, a playback count1913, and a last playback date and time1914. The content ID1911identifies the VR content to be provided by the HMD120. The content data1912is the data of the VR content. The playback count1913indicates the number of times that the VR content has been played back by the HMD120of each shop. The last playback date and time1914indicates the date and time at which the VR content was last played back.

The table1920stores a playback history of the VR content. More specifically, the table1920includes a playback date and time1921, a playback place1922, a content ID1923, a user ID1924, a terminal ID1925, and a two-dimensional code1926. The playback date and time1921indicates the date and time at which playback of VR content was performed. The playback place1922indicates the place in which the VR content was played back (e.g., shop name, address, or coordinate values). The content ID1923identifies the VR content. The user ID1924identifies the user who viewed the VR content. The terminal ID1925identifies the terminal (HMD120or smartphone1480) on which the playback of the VR content was performed.

The table1930stores data relating to scenes selected and photographed by the user. For example, when the user logs in to the user screen of the VR content from a personal computer at home and browses the photographed image, a browsing record is stored in the table1930. More specifically, the table1930includes an access date and time1931, an access place1932, a content ID1933, a frame number1934, a user ID1935, and a terminal ID1936. The access date and time1931indicates the date and time at which access to the VR content was performed. The access place1932indicates the place in which the access to the VR content was performed (e.g., Internet protocol (IP) address, geographical coordinate values, residential address, or other position information on the personal computer at the home of the user5). The frame number1934is the frame number of the VR content data as a moving image, and identifies the photographed image. The user ID1935identifies the user who viewed the VR content and acquired the photographed image. The terminal ID1936identifies the terminal from which the access was performed (e.g., a personal computer at home).

The table1940corresponds to an advertisement database. More specifically, the table1940includes a content ID1941, an advertisement ID1942, and advertisement data1943. Like the content ID1911, the content ID1941identifies the VR content. The advertisement ID1942identifies an advertisement associated with the VR content. One piece of VR content is associated with one or more advertisements. The advertisement data1943indicates the data of the advertisement. Each advertisement may be associated in advance with the VR content.

The table1950includes an advertisement ID1951, a distribution date and time1952, and a user ID1953. Like the advertisement ID1942, the advertisement ID1951identifies an advertisement. The distribution date and time1952indicates the date and time at which the advertisement identified by the advertisement ID1951was distributed. The user ID1953indicates the user to whom the advertisement was distributed (presented). For example, when the user5browses the photographed image of the VR content by accessing the server600from his or her personal computer at home, the advertisement associated with the VR content is displayed on the monitor of the personal computer, and the distribution history at this time is stored in the table1950.

A procedure for playing back VR content is now described with reference toFIG. 20.FIG. 20is a flowchart of a portion of processing to be executed by the smartphone1480mounted to the HMD120according to at least one embodiment of this disclosure. This processing is executed when the user5mounts the smartphone1480on the HMD120in a shop and views the VR content.

In Step S2010, the CPU1450of the smartphone1480detects that the smartphone1480has been mounted to the HMD120connected to the computer200. For example, the CPU1450detects the mounting by detecting that the interface for charging the smartphone1480has been connected to the terminal of the HMD120.

In Step S2015, the CPU1450activates the camera application to turn on the camera1454.

In Step S2020, the CPU1450photographs, based on an operation by the user5, the two-dimensional code1642printed on the good (e.g., mug1641) with the camera1454, and stores the image data of the two-dimensional code in the flash memory1455.

In Step S2025, the CPU1450extracts from the two-dimensional code access information for accessing the VR content. The access information is created in advance by the provider or the like of the VR content, and includes, for example, a content ID and a validity period of the VR content. In another aspect, the access information includes position information on the shop or other sales location at which the good is sold. Through use of position information as the authentication target, even if the access information is illegitimately copied, the use of illegitimately acquired access information can be prevented by using the position information to perform authentication.

In Step S2030, the CPU1450transmits to the management server (e.g., server600) of the service providing the VR content the user ID of the smartphone1480and the access information via the computer200. In another aspect, the CPU1450transmits position information on the smartphone1480(i.e., information for identifying the place from which the access information is acquired). When it is authenticated that the access information is valid information, the server600reads out the content data and transmits the content data to the computer200. The transmission of the content data is performed by, for example, streaming distribution.

In Step S2035, the CPU1450receives from the server600the content data for playing back the VR content. In Step S2040, the CPU1450displays the VR content on the monitor1463by using the received content data.

In Step S2045, the CPU1450photographs one scene of the VR content on the camera1454based on an operation by the user5. The scene to be photographed is freely determined by the user5. In at least one aspect, the scene is determined in advance by the provider of VR content. In at least one aspect, the scene is recommended to the user5based on the photography history of other users who viewed the same VR content or based on a recommendation degree or other comments input by other users.

In Step S2050, the CPU1450stores the photographed image and the two-dimensional code information in association with each other in the flash memory1455. In at least one aspect, the stored data is temporarily stored in the smartphone1480, and information identifying the photographed scene and the two-dimensional code information are transmitted from the computer200to the server600. The server600manages the data received from the computer200, and at a later date, in accordance with a request by the user5, transmits the data of the photographed image to the terminal (e.g., smartphone1480or personal computer at home) used by the user5. At this time, the server600may further transmit, for example, advertisement data or promotion information associated with the VR content. As a result, information matching a preference of the user5may be provided to the user5. In Step S2055, the CPU1450detects that the smartphone1480has been removed from the HMD120.

In Step S2060, the CPU1450activates, based on an operation by the user5, the photograph application and displays the photographed image on the monitor1463. This display may be any one of display using image data stored in a nonvolatile manner in the smartphone1480and display using data temporarily stored in the RAM1456. In at least one aspect, the user5inputs a comment while looking at the image. The input comment is transmitted from the terminal displaying the image to the server600. The server600stores the comment in association with the VR content. When another user views the same VR content as that VR content, the comment may be provided to the another user. In this way, the provider of the VR content accumulates data indicating the preference of each user, which enables an advertisement matching the preference of the users to be provided to the users browsing the VR content or the image.

A control structure of the smartphone1480is now described with reference toFIG. 21.FIG. 21is a flowchart of an example of a portion of processing to be executed by the smartphone1480to display an image photographed during playback of the VR content according to the first embodiment of this disclosure. This processing is executed, for example, when the user5operates the smartphone1480at a place other than a shop, for example, at home or on a train.

In Step S2110, the CPU1450activates an application for displaying a photograph based on an operation by the user5.

In Step S2120, the CPU1450displays, based on a touch operation for selection by the user5, on the monitor1463an image photographed when the user5viewed the VR content in the shop. Information associated with the image, such as the content ID, an image ID, and other attribute information is also loaded into the RAM1456.

In Step S2130, the CPU1450receives input of the user ID and the password based on a touch operation by the user5on the monitor1463.

In Step S2140, the CPU1450transmits the user ID and the password to the management server (e.g., server600). In Step S2150, the CPU1450accesses the management server and establishes communication. In Step S2160, the CPU1450transmits the content ID, the image ID (frame number), and the user ID to the management server.

In Step S2170, the CPU1450receives advertisement data from the management server. In Step S2180, the CPU1450displays an advertisement on the monitor1463based on the received advertisement data. When a comment by another user who has photographed the image is registered in the server600, the server600may also transmit the comment to the smartphone1480. In this case, the CPU1450displays the comment by the another user on the monitor1463, and hence the user5is able to know the impression of the another user on the image.

A screen display mode of at least one embodiment is now described with reference toFIG. 22andFIG. 23AtoFIG. 23C.FIG. 22is a diagram of a screen displayed on a display430installed in a shop according to the first embodiment of this disclosure.FIG. 23AtoFIG. 23Care diagrams of transitions of the screen on the monitor1463of the smartphone1480according to the first embodiment of this disclosure.

InFIG. 22, the display430displays a screen for showing a waiting situation for users other than the user5. This screen is displayed, for example, when the user5puts on the HMD120and views VR content by using the smartphone1480fitted in the HMD120. More specifically, the display430displays, as a waiting situation, the time until playback of the VR content by the user5finishes and the number of users waiting for their turn (number of people waiting). The display430also displays information indicating who the next user is. For example, the two-dimensional code is marked on various goods (e.g., mugs, T-shirts, cards, CDs, and bags), and hence the display430may display the purchaser of a good based on identification data of the good included in the two-dimensional code. In at least one aspect, the display430displays the ID of user registered as the user to receive playback of the VR content.

As described above, in the first embodiment, it is possible to easily provide a virtual reality space to many users. In the first embodiment, each user is able to enjoy VR content by using a smartphone or another terminal owned by himself or herself, and is able to photograph a desired scene. As a result, after enjoyably viewing the VR content, the users are able to enjoy a photographed image.

In at least one aspect, the VR content that is played back after reading the two-dimensional code is determined randomly, for example, by a lottery, regardless of the information included in the two-dimensional code. As an example, when the two-dimensional code is read, one of 20 kinds of VR content may be selected as a playback target by lottery, for example. In this case, VR content in which a plurality of characters appear has a higher rarity than that of VR content in which only one character appears. Therefore, a playback frequency of VR content in which a plurality of characters appear may be set to a lower value than that of the playback frequency of VR content in which only one character appears.

In at least one aspect, when another user is waiting for playback of the VR content, during the waiting time, the computer200transmits a message determined in advance to the user by using the sound of a character that the another user is presumed to like. In this way, the feeling of expectation of the another user may be increased during the waiting time.

In at least one aspect, the viewed VR content, the user who viewed the VR content, and the photographed scene are stored in the server600in association with each other. The VR content and the scene are associated in advance with an advertisement. The server600may provide the advertisement to the user based on the VR content or the photographed scene, and hence there is an increased possibility that the server600provides an advertisement matching the preference of the user.

In the first embodiment described above, the VR content is identified based on information included in the two-dimensional code. In at least one aspect, the VR content is randomly output. For example, the information included in the two-dimensional code is used as a trigger for the server600to randomly extract the VR content. When the VR content is randomly output, the user5does not know the content until he or she visually recognizes the JR content that is played back, which may increase his or her interest in the VR content.

In at least one aspect, the avatar of the user5is added when photographing one scene of the VR content. For example, a combined image may be formed by adding the avatar object of the user5to a place determined in advance when the user5has performed photography.

Second Embodiment

A second embodiment of disclosure is now described. In the second embodiment, access information marked on a card, a ticket, or other medium is used to access VR content.

Provision of the VR content in the second embodiment is now described with reference toFIG. 24.FIG. 24is a schematic diagram of a configuration of the HMD system100according to the second embodiment of this disclosure. The HMD system100includes a ticket shelf2410, a card reader2420, a computer200, an HMD120, and a display430. The HMD120and the display430are the same as in the first embodiment, and hence a description of those parts is omitted here. The HMD system100is arranged in, for example, an anime (Japanese animation) shop, a character shop, a convenience store, and other shops. Similarly to the first embodiment, the HMD system100is connected to the server600via the network2.

Tickets2411to2415for viewing the VR content to be provided are displayed on the ticket shelf2410. Each card includes an IC chip2430. The IC chip2430stores access information. When the user5purchases a card, the user5holds the card over the card reader2420and executes an activation process. The data read out from the IC chip2430contains a ticket ID, a content authentication number, and other access information. The read out data is input to the computer200. The computer200transmits the input data to the server600, and authenticates whether the card is a legitimate card. When the cart is authenticated as being a legitimate card, the server600transmits the data of the VR content identified on the card to the computer200. The computer200transmits the received data to the HMD120. The smartphone1480connected to the HMD120displays the VR content based on the data.

A data structure of the server600according to the second embodiment of this disclosure is now described with reference toFIG. 25.FIG. 25is a diagram of one mode of storage of data in the storage630included in the server600according to the second embodiment of this disclosure. The storage630includes a table2500, a table1910, a table2520, and a table1930.

The table2500includes a ticket ID2501, a content authentication number2502, a sale date and time2503, and a sales terminal2504. The ticket ID2501identifies the tickets sold at each shop. The content authentication number2502controls access to the VR content that may be played back by the ticket. For example, when the content authentication number transmitted from the computer200matches the content authentication number2502, the CPU1450determines that the ticket identified by the content authentication number and the ticket ID is valid. The sale date and time2503indicates the date and time when the ticket is sold. For example, the time at which the ticket is read by the card reader2420is stored in the table2500as the sale date and time2503. The sales terminal2504indicates the device used at the place where the ticket is sold. For example, the sales terminal2504identifies a point of sales (POS) system or the card reader2420arranged in the shop, or the computer200.

The table1910includes a content ID1911, content data1912, a playback count1913, and a last playback date and time1914similarly to the first embodiment described above.

The table2520includes a playback date and time1921, a playback place1922, a content ID1923, a user ID1924, a terminal ID1925, and a ticket ID2526. The ticket ID2526identifies tickets that have been authenticated to view the VR content and determined to be a legitimate ticket.

The table1930includes an access date and time1931, an access place1932, a content ID1933, a frame number1934, a user ID1935, and a terminal ID1936.

A procedure for viewing VR content in the second embodiment is now described with reference toFIG. 26.FIG. 26is a flowchart of a flow of procedures to be executed by the user5according to the second embodiment of this disclosure.

In Step S2610, the user5visits an anime shop, a character shop, or another shop. In Step S2615, the user5purchases a ticket2411at the shop for viewing VR content. In Step S2620, the user5activates the purchased ticket2411. For example, the ticket2411is activated by the staff of the shop using a terminal.

In Step S2625, the user5holds the activated ticket2411over the card reader2420, and receives authentication of the identification number of the VR content recorded on the ticket2411. More specifically, the computer200to which the card reader2420is connected transmits to the server600information (e.g., ticket ID and content authentication number) read from the ticket2411. The server600compares the ticket ID2501and the content authentication number2502stored in the table2500of the storage630with the ticket ID and the content authentication number received from the computer200, and determines whether the ticket is a legitimate ticket.

In Step S2630, the user5mounts the smartphone1480to the HMD120, and puts the HMD120on his or her head. When the purchased ticket is a legitimate ticket, the server600transmits the VR content data to the HMD120, and the smartphone1480displays the VR content based on the data.

In Step S2635, the user5experiences the VR content displayed on the monitor1463of the smartphone1480. In at least one aspect, in addition to viewing the VR content, the user5is able to participate in the VR content as an avatar object.

In Step S2640, the user5photographs one scene of the VR content by operating the controller300or by moving his or her line of sight to depressing the photograph button.

In Step S2645, when the user5finishes viewing the VR content, the user5removes the smartphone1480from the HMD120, and leaves the shop. In Step S2650, the user5browses the website of the service providing the VR content by using the smartphone1480or a personal computer at home. In Step S2655, the user5inputs an identification code and the user ID written on the purchased ticket2411into the website and accesses the website.

In Step S2660, the user5registers personal information (e.g., address, name, telephone number, e-mail address, and preferences of the user selected from list determined in advance) in the user account of the website. When the server600detects that the personal information is registered, the server600reads out from the storage630to the memory620the data photographed when the user was viewing the VR content, and transmits the image data to the terminal (e.g., smartphone1480or personal computer) the user5is using.

In Step S2665, the user5confirms the image photographed when the user5was experiencing the VR content.

In Step S2670, the user5uploads the photographed image to a user account registered in a social network service (SNS). Other users may enjoy the image photographed by the user5by accessing a public page of the user account. When there is a comment regarding the photographed image by the user5, the comment may also be displayed.

A control structure of the HMD system100according to the second embodiment is now described with reference toFIG. 27.FIG. 27is a flowchart of a portion of processing to be executed by the HMD system100according to the second embodiment of this disclosure. This processing is executed by the server600or the computer200.

In Step S2710, the processor210of the computer200detects, based on a signal from the POS terminal or another terminal, that the purchased ticket has been activated. In Step S2715, the processor210receives from the card reader2420the identification code read by the card reader2420. In Step S27120, the processor210transmits the received identification code to the server600.

In Step S2725, the processor610of the server600executes authentication processing, and determines whether the ticket2411is a legitimate ticket. For example, the processor610determines whether the ticket2411is valid based on a comparison between the ticket ID2501and the content authentication number2502registered in advance in the storage630and the ticket ID and the content authentication number received from the computer200. When it is determined that the ticket2411is valid (YES in Step S2725), the processor610switches the control to Step S2730. Otherwise (NO in Step S2725), the processor610switches the control to Step S2770.

In Step S2730, the processor610reads out the content data associated with the ticket ID from the storage630, and transmits the content data to the computer200.

In Step S2735, the processor210of the computer200generates a video signal for presenting in the virtual space a video based on the content data. In another aspect, the CPU1450of the smartphone1480may generate the video signal. In Step S2740, the processor210outputs the generated video signal to the HMD120. The video signal is input to the smartphone1480mounted to the HMD120.

In Step S2745, the CPU1450of the smartphone1480outputs a portion of the video signal to the monitor1463. The monitor1463displays an image of the VR content based on the video signal. The user5wearing the HMD in which the smartphone1480is fitted is able to view the VR content by visually recognizing the image.

In Step S2750, the processor210of the computer200determines, based on the presence or absence of a signal from the card reader2420, whether there is waiting to play back VR content based on a different ticket. When it is determined that there is waiting to play back of VR content (YES in Step S2750), the processor210switches the control to Step S2755. Otherwise (NO in Step S2750), the processor210ends the processing. In Step S2′755, the processor210displays the wait time of the next viewer on the monitor1463. In Step S2760, the processor210calls the next viewer by outputting the sound of the character of the VR content from a speaker (not shown).

In Step S2770, the processor610of the server600notifies the computer200that the ticket is not valid. When this notification is received, the computer200may display on the display430a message indicating that the ticket is not valid.

A display mode of the screen in the content providing system according to the second embodiment is now described with reference toFIG. 28.FIG. 28is a diagram of one mode of the screen displayed by the display430for notifying of awaiting order situation according to the second embodiment of this disclosure.

InFIG. 28, the display430displays a screen for showing a waiting situation for users other than the user5. This screen is displayed, for example, when the user5puts on the HMD120and views VR content by using the smartphone1480fitted in the HMD120. More specifically, the display430displays, as a waiting situation, the time (“about two minutes”) until playback of the VR content by the user5finishes and the number of users waiting for their turn (“3”). The display430also displays information indicating who the next user is. For example, the display430displays the ticket number marked on the ticket purchased by each user. In at least one aspect, the display430displays a user ID registered as a user who is to receive playback of the VR content, or a title or character of the VR content to be played back.

In at least one aspect, there is employed a mode in which the ticket and the two-dimensional code are used in combination. For example, when the user5purchases a ticket by making a request to the staff of the shop, serial numbers are marked on the tickets in advance, and the two-dimensional code includes any one of the serial numbers marked on the tickets as access information.

In this way, during content viewing, when the card reader2420reads out the information on the serial number, it is possible to present to a user who is in the waiting order how many users have viewed the content. Through including, in addition to serial number information, information (ticket ID) for identifying the ticket in the two-dimensional code or the IC chip2430, when the user5browses the photographed image with the smartphone1480after viewing the VR content, information on the user5(e.g., login information for SND account) and information for identifying the ticket are recorded.

When the user5again purchases a ticket, views the VR content, and photographs the VR content, the user5again performs the login operation for the application and the like and the operation for viewing the photographed image. As a result of those operations, the information for identifying the ticket and the information on the user5are associated with the VR content or the photographed image.

Though accumulation of such information in the server600, the content provider is able to know which images are particularly preferred among the photographed images in understanding of the behavior of each user. For example, it may be assumed that, among the photographed images, a photographed image that has been browsed a large number of times by the user matches the preference of the user. More specifically, for example, when a photographed image of a certain character has been browsed more times than the photographed images of other characters, it may be assumed that the user prefers the certain character.

The technical features disclosed above are summarized as follows.

There is provided a content providing method to be executed by a computer200in order to provide content by using an HMD120. The content providing method includes receiving input of access information (e.g., content ID, ticket ID, and content authentication number) (e.g., content ID, ticket ID, and content authentication number) for accessing content via an interface of the computer200. The content providing method further includes transmitting the access information to a server600for managing one or more pieces of content. The content providing method further includes receiving content data for displaying content from the server600. The content providing method further includes defining a virtual space11for presenting content by using the HMD120. The content providing method further includes causing the HMD120to play back the content by using the content data.

In the content provision method according to Configuration 1, the HMD120includes a camera. The receiving of the input of the access information includes photographing a code (e.g., two-dimensional code) including access information by using a camera, receiving input of an image signal obtained by the photographing, and extracting the access information from the image signal.

In the content provision method according to Configuration 1, the receiving of the input of the access information includes acquiring access information from a medium (e.g., tickets2411to2415) on which the access information is recorded.

It is preferred that the content provision method further include displaying the content being played back on the HMD120on a display430connected to the computer200.

It is preferred that the content provision method further include displaying a waiting order situation of use of the HMD120on the display430connected to the computer200.

It is preferred that the content provision method further include outputting advertisement information associated with content.

It is preferred that the content provision method further include presenting an avatar object corresponding to a user5of the HMD120together with the content.

It is preferred that the content provision method further include photographing the content being played back.

It is preferred that the content provision method further include displaying an image acquired by the photography.

It is preferred that the content provision method further include displaying a user5interface for receiving input of a comment regarding the image acquired by the photography.

It is preferred that the content provision method further include outputting a sound of a character included in a next piece of content to be played back after playback of the content finishes, to thereby prompt a viewer of the next piece of content to put on the HMD120.

It is preferred that the content provision method further include transmitting to the server600position information indicating a place at which playback of the content is performed and identification data associated with the position information.

It is to be understood that the embodiments disclosed herein are merely examples in all aspects and in no way intended to limit this disclosure. The scope of this disclosure is defined by the appended claims and not by the above descriptions, and it is intended that all modifications made within the scope and spirit equivalent to those of the appended claims are duly included in this disclosure.

In the at least one embodiment described above, the description is given by exemplifying the virtual space (VR space) in which the user is immersed using an HMD. However, a see-through HMD may be adopted as the HMD. In this case, the user may be provided with a virtual experience in an augmented reality (AR) space or a mixed reality (MR) space through output of a field-of-view image that is a combination of the real space visually recognized by the user via the see-through HMD and a part of an image forming the virtual space. In this case, action may be exerted on a target object in the virtual space based on motion of a hand of the user instead of the operation object. Specifically, the processor may identify coordinate information on the position of the hand of the user in the real space, and define the position of the target object in the virtual space in connection with the coordinate information in the real space. With this, the processor can grasp the positional relationship between the hand of the user in the real space and the target object in the virtual space, and execute processing corresponding to, for example, the above-mentioned collision control between the hand of the user and the target object. As a result, an action is exerted on the target object based on motion of the hand of the user.