Information processing method, display device, and program

Abstract

To improve user convenience.SOLUTION: A processing device 17 of a projector 10 performs control to associate user information used by application software with the projector 10. The processing device 17 operates in a first mode including performing control to dissolve the association between the user information and the projector 10 when the projector 10 is powered off, and maintaining the association between the user information and the projector 10 when the projector 10 transitions to a standby state.SELECTED DRAWING: Figure 3

Description

[Technical field] 【0001】 The present invention relates to an information processing method, a display device, and a program. [Background technology] 【0002】 Conventionally, there is known a technique for deleting information used in an information processing device when the information processing device is turned off. For example, the following Patent Document 1 discloses a data management system that deletes data stored in the information processing device by a user and also deletes data stored in devices outside the information processing device to prevent information leakage. [Prior art documents] [Patent documents] 【0003】 [Patent Document 1] JP 2008-250574 A Summary of the Invention [Problem to be solved by the invention] 【0004】 In Patent Document 1, data is deleted when the information processing device is turned off. In order to maintain the data in the information processing device, the power needs to be kept on, which is not necessarily convenient. [Means for solving the problem] 【0005】 An information processing method according to one embodiment of the present invention includes operating in a first mode, which includes performing control to associate user information used by application software with a display device executing the application software, performing control to disassociate the user information from the display device when the display device is powered off, and maintaining the association between the user information and the display device when the display device transitions to a standby state. 【0006】 A display device according to one embodiment of the present invention includes an optical device and a processing device, and the processing device operates in a first mode, which includes executing application software, performing control to associate user information used by the application software with the device itself, performing control to disassociate the user information from the device itself when the device is powered off, and maintaining the association between the user information and the device itself when the device transitions to a standby state. 【0007】 A program according to one embodiment of the present invention causes a processing device to operate in a first mode, which includes controlling the processing device to associate user information used by application software with a display device executing the application software, controlling the processing device to disassociate the user information from the display device when the display device is powered off, and maintaining the association between the user information and the display device when the display device transitions to a standby state. [Brief description of the drawings] 【0008】 [Figure 1] FIG. 1 is a diagram showing a display system 1 according to a first embodiment. [Diagram 2] FIG. 2 is a schematic diagram showing the appearance of a projector 10. [Diagram 3] FIG. 2 is a block diagram showing the configuration of a projector 10. [Figure 4] FIG. 13 is a schematic diagram showing a setting screen D1 in an administrator authority mode. [Diagram 5] FIG. 13 is a schematic diagram showing an application software selection screen D2 in a general mode. [Figure 6] FIG. 13 is a schematic diagram showing an initial screen D3 in a hotel mode. [Figure 7] FIG. 13 is a schematic diagram showing an application software selection screen D4 in a hotel mode. [Figure 8]13 is a flowchart showing a process flow in a general mode. [Figure 9] 13 is a flowchart showing a process flow in a hotel mode. [Figure 10] FIG. 13 is a diagram showing a display system 2 according to a second embodiment. [Figure 11] 13 is a schematic diagram showing a display screen D5 for the operating status of the projector 10. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 【0009】 Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Note that the dimensions or scale of each part in the drawings may differ from the actual dimensions, and some parts are shown diagrammatically to facilitate understanding. Furthermore, the scope of the present invention is not limited to these embodiments unless otherwise specified in the following description to the effect that the present invention is limited thereto. 【0010】 A: First embodiment A-1: Overview of Display System 1 1 is a diagram showing a display system 1 according to a first embodiment. The display system 1 includes a projector 10, an in-house communications management device 20, and video distribution servers 30A and 30B. 【0011】 The projector 10 displays an image by projecting the image onto a screen such as a wall, a ceiling, or a cloth. The projector 10 is an example of a display device. In this embodiment, the projector 10 is installed in a hotel H. More specifically, the projector 10 is arranged in each of a plurality of guest rooms in the hotel H. Thus, the display system 1 includes a plurality of projectors 10. A guest staying at the hotel H can use the projector 10 in the guest room in which the guest stays to, for example, view a guide to the hotel H or use a video distribution service. Hereinafter, a user of the projector 10 is referred to as a user. In this embodiment, the user is a guest staying at the hotel H. 【0012】 The display system 1 may include only one projector 10. For example, the projector 10 provided in the lounge of the hotel H may be the projector 10 of the display system 1. 【0013】 The on-premise communications management device 20 connects information processing devices in the hotel H to the network N. The on-premise communications management device 20 includes, for example, a modem or an ONU (Optical Network Unit), a router, and a hub. In FIG. 1, the projector 10 is connected to the on-premise communications management device 20, but for example, a smartphone or a personal computer carried by a user may also be connected to the on-premise communications management device 20. The on-premise communications management device 20 and the projector 10 may be connected by wire or wirelessly. 【0014】 The video distribution servers 30A and 30B distribute videos on demand to subscribers of the video distribution services. The video distribution server 30A is a server for the video distribution service A, and the video distribution server 30B is a server for the video distribution service B. In this embodiment, the operator of the hotel H subscribes to the video distribution service A and the video distribution service B. The on-premises communication management device 20 is connected to the video distribution servers 30A and 30B via the network N. During the user's stay at the hotel H, the user can view the videos distributed by the video distribution service A and the video distribution service B by projecting them on the projector 10. In addition, if the user subscribes to at least one of the video distribution service A or the video distribution service B, the user can enter his / her account information into the projector 10 and use the video distribution service A or the video distribution service B. In addition to the video distribution service A and the video distribution service B, there are many other video distribution services, and a server is provided corresponding to each video distribution service. 【0015】 A-2: Projector 10 configuration FIG. 2 is a schematic diagram showing the exterior of the projector 10. In this embodiment, the projector 10 is housed inside the lighting fixture 50 so that its exterior is not visible to guests. Generally, the guest rooms of the hotel H have a unified interior. On the other hand, the exterior of the projector 10 has a mechanical feel, and if the projector 10 is placed in the guest room, it may not blend in with the unified interior. In this embodiment, the lighting fixture 50 houses the projector 10, and the exterior of the projector 10 creates a sense of unity in the guest room space. 【0016】 The lighting fixture 50 includes a pedestal 501, a support 502, a base 503, and a shade 504. The pedestal 501 is installed on the floor or a desk of a guest room. More specifically, the pedestal 501 is a plate-like member having two surfaces. One surface of the pedestal 501 contacts an installation surface such as a floor surface, and the other surface is connected to the support 502. The support 502 is a rod-like member that stands vertically from the other surface of the pedestal 501. One end of the support 502 is connected to the pedestal 501, and one end of the support 502 is connected to the base 503. The base 503 is a plate-like member having two surfaces. One surface of the base 503 is connected to the support 502, and the projector 10 is placed on the other surface. Wiring for supplying power to the projector 10 is arranged, for example, inside the support 502. 【0017】 The shade 504 surrounds the base 503 and the projector 10. The shade 504 includes a side shade 504A surrounding the outer periphery of the base 503 and the projector 10, an upper shade 504B disposed above the base 503, and a lower shade (not shown) disposed below the base 503. The shade 504 is generally cylindrical, and the inside of the shade 504 is hollow. An image light transmitting area 505 is provided in the side shade 504A at a position facing the projection port 143A of the projector 10. In this embodiment, the image light transmitting area 505 is made of a semi-transparent mirror. Therefore, the image light transmitting area 505 reflects light from the outside, but the image light emitted from the projector 10 passes through the image light transmitting area 505 and is projected to the outside of the shade 504. The surface of the side shade 504A is formed of a mirror surface that reflects light incident from the outside. Therefore, it is difficult to distinguish from the outside the boundary between image light transmitting area 505 and other parts, and it is difficult to distinguish the existence of image light transmitting area 505. Furthermore, projector 10 is not visible from the outside, and projection port 143A is not visible. 【0018】 In addition, a first lighting unit (not shown) is disposed above the projector 10 in the shade 504. The first lighting unit faces the upper shade 504B and irradiates the upper shade 504B from below. Therefore, light is diffused and emitted from the upper shade 504B to the upper side. A second lighting unit (not shown) is disposed below the base 503. The second lighting unit faces the lower shade and irradiates the lower shade from above. Therefore, light is diffused and emitted from the lower shade to the lower side. The first lighting unit and the second lighting unit are planar light sources. For example, the first lighting unit and the second lighting unit are provided with an arrangement and wiring of light-emitting elements such as LEDs (Light Emitting Diodes) arranged on a board, and the arrangement area of ​​the light-emitting elements emits light approximately uniformly. The first lighting unit and the second lighting unit are supported by the shade 504 and the support 502. 【0019】 Note that the appearance and structure of the lighting fixture 50 shown in FIG. 2 are merely an example, and the lighting fixture 50 may have any appearance and structure as long as the lighting fixture 50 can accommodate the projector 10 therein. 【0020】 A-3: Projector 10 Configuration 3 is a block diagram showing the configuration of the projector 10. The projector 10 includes an operation device 12, a communication device 13, an optical device 14, a speaker 15, a storage device 16, and a processing device 17. 【0021】 The operation device 12 receives input operations from a user. The operation device 12 is, for example, various operation buttons, operation keys, or a touch panel. The operation device 12 is provided, for example, on the housing of the projector 10. The operation device 12 may also be a remote controller provided separately from the housing of the projector 10. 【0022】 The communication device 13 is an interface communicatively connected to the on-premise communication management device 20. The communication device 13 receives image data from an image supply device such as video distribution servers 30A, 30B via the on-premise communication management device 20. The communication device 13 is, for example, a wireless or wired LAN (Local Area Network), Bluetooth, USB (Universal Serial Bus), HDMI (High Definition Multimedia Interface) or other interface. Bluetooth, USB and HDMI are each registered trademarks. The communication device 13 includes an interface such as an antenna in the case of wireless communication or a connector in the case of wired communication, and an interface circuit that electrically processes a signal received via the interface. 【0023】 The optical device 14 projects a projection image onto a screen based on an image signal from the processing device 17. The optical device 14 includes a light source 141, a light modulation device 142, and a projection optical system 143. 【0024】 The light source 141 includes, for example, a halogen lamp, a xenon lamp, an extra-high pressure mercury lamp, an LED, or a laser light source. The light source 141 emits, for example, red, green, and blue light, or emits white light. When the light source 141 emits white light, the light emitted from the light source 141 has a variation in luminance distribution reduced by an integrator optical system (not shown), and is then separated into red, green, and blue light by a color separation optical system (not shown) and enters the light modulation device 142. 【0025】 The light modulation device 142 includes three light modulation elements provided corresponding to red, green, and blue, respectively. Each of the light modulation elements includes, for example, a transmissive liquid crystal panel, a reflective liquid crystal panel, or a DMD (digital mirror device). The light modulation elements modulate the red, green, and blue light, respectively, based on an image signal from the processing device 17, to generate image light of each color. The image light of each color generated by the light modulation device 142 is synthesized by a color synthesis optical system (not shown) to become full-color image light. Note that the light modulation device 142 is not limited to this, and may be made to visually recognize full-color image light by emitting image light of each color in a time-division manner using a single-plate liquid crystal panel, a DMD, or the like. 【0026】 The projection optical system 143 forms the full-color image light on a screen and projects it. The projection optical system 143 is an optical system including at least one projection lens, and may include a zoom lens, a focus lens, or the like. The projection port 143A described above is a part of the projection optical system 143. 【0027】 The speaker 15 outputs sound based on sound data. In this embodiment, the speaker 15 mainly outputs sound based on sound data included in video data. The speaker 15 may be provided separately from other elements of the projector 10. In this case, the speaker 15 and the projector 10 may be connected to each other by a wired or wireless interface so as to be able to transmit and receive data. 【0028】 The storage device 16 is a recording medium that can be read by the processing device 17. The storage device 16 includes, for example, a nonvolatile memory and a volatile memory. Examples of the nonvolatile memory include a ROM (Read Only Memory), an EPROM (Erasable Programmable Read Only Memory), and an EEPROM (Electrically Erasable Programmable Read Only Memory). Examples of the volatile memory include a RAM. 【0029】 The storage device 16 stores a control program 162 executed by the processing device 17, and various data 164 used by the processing device 17. The control program 162 is executed by the processing device 17. The control program 162 includes, for example, an operating system and a plurality of application software programs. The data 164 includes information input by a user when the application software is executed and information generated by the application software when the application software is executed, i.e., user information. 【0030】 The processing device 17 is configured, for example, by one or more processors. As an example, the processing device 17 is configured by one or more central processing units (CPUs). Some or all of the functions of the processing device 17 may be configured by circuits such as a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA). The processing device 17 executes various processes in parallel or sequentially. 【0031】 The processing device 17 reads and executes the control program 162 from the storage device 16, thereby functioning as a power supply control unit 170, a mode switching unit 171, an execution unit 172, and a user information processing unit 173. 【0032】 A-4. Details of the processing device 17 Next, the power supply control unit 170, the mode switching unit 171, the execution unit 172, and the user information processing unit 173, which are realized by the processing device 17 executing the control program 162, will be described in detail. 【0033】 The power control unit 170 controls the power state of the projector 10. The power state of the projector 10 includes, for example, power on, power off, and standby state. When the power is on, power is applied to the entire main board including the processing device 17, and the projector 10 can be used. When the power is on, images can be displayed as shown in Figs. 4 to 7, which will be described later. 【0034】 When the power is off, no image is displayed and only the operation of the power button on the housing of the projector 10 or the remote controller is accepted. When the power button is operated while the power is off, the power control unit 170 switches the power of the projector 10 to on. 【0035】 In the standby state, as in the case of power off, no image is displayed, but operation inputs other than the power button are accepted. When the power button or an operation input other than the power button is received in the standby state, the power control unit 170 switches the projector 10 to the power on state. Also, in the standby state, application software can be updated. In the standby state, power is supplied to part of the main board including the processing device 17. 【0036】 For example, when the power button is pressed briefly while the projector 10 is powered on, the power control unit 170 shifts the projector 10 to a standby state. Also, when the power button is pressed long while the projector 10 is powered on or in a standby state, the power control unit 170 shifts the projector 10 to a power-off state. In other words, when a first operation is performed on the power button of the projector 10 while the projector 10 is powered on, the projector 10 shifts to a standby state. When a second operation, which is more complicated than the first operation, is performed on the power button, the projector 10 is turned off. A short press is an example of a first operation, and a long press is an example of a second operation. As another example, the power control unit 170 may shift the projector 10 to a standby state when the power button is pressed once while the projector 10 is powered on. Also, the power control unit 170 may shift the projector 10 to a power-off state when the power button is pressed twice while the projector 10 is powered on or in a standby state. In this case, pressing once is an example of a first operation, and pressing twice is an example of a second operation. 【0037】 Also, the power supply control unit 170 may transition to a standby state, for example, when no operation is performed on the projector 10 and the image to be displayed does not change for a first period or more. Specifically, for example, after the initial screen D3 shown in FIG. 6 is displayed, when a state in which no input is made by the user has passed for a first period or more, the power supply control unit 170 transitions the projector 10 to a standby state. Furthermore, the power supply control unit 170 may transition the projector 10 to a power-off state when a second period has passed since the projector entered the standby state. As an example, the first period may be 10 or 15 minutes, and the second period may be 5 or 10 minutes. 【0038】 The mode switching unit 171 switches the operation mode of the projector 10 between a general mode and a hotel mode. The general mode is an example of the second mode, and the hotel mode is an example of the first mode. 【0039】 The general mode is an operation mode that assumes that the projector 10 will be used at home or the like. In other words, the general mode assumes that the projector 10 will be used by an individual or by people who have a certain relationship with each other, such as family or friends. As will be described in detail later, in the general mode, for example, account information for a video distribution service, viewer age settings, viewing history, and the like are maintained unless otherwise instructed by the user. This allows the user to omit inputting account information for a video distribution service and to refer to the viewing history. 【0040】 On the other hand, the hotel mode is an operation mode that assumes that the projector 10 will be used in a hotel H. In other words, the hotel mode assumes that the projector 10 will be used by an unspecified number of users. Facilities that assume that the projector 10 will be used by an unspecified number of users include, in addition to hotels, facilities where an unspecified number of people stay, such as hospitals, welfare and nursing care facilities, and residences. When the projector 10 is used in these facilities, the name of the hotel mode may be changed as appropriate. 【0041】 Details will be described later, but in hotel mode, for example, account information for video distribution services, viewer age settings, viewing history, etc. are maintained while projector 10 is in standby mode, but are erased when projector 10 is turned off. This allows the user to omit inputting account information for video distribution services and to refer to viewing history while staying at hotel H. When leaving hotel H, the user's personal information is erased by turning off projector 10, so that the personal information can be prevented from being known to others. 【0042】 The mode switching unit 171 switches the operation mode of the projector 10 based on, for example, an operation by an employee of the hotel H. In other words, the mode switching unit 171 accepts the selection of one operation mode from among a plurality of operation modes including the hotel mode and the general mode. In this embodiment, the employee of the hotel H performs a predetermined operation on the projector 10 to switch the projector 10 to the administrator authority mode, which allows more detailed settings than normal. The administrator authority mode is a mode for setting the projector 10, and is a different type of mode from the general mode and the hotel mode, which are premised on the use of the projector 10. 【0043】 Switching to the administrator authority mode is performed, for example, by inputting a special command to an operation button provided on the housing of the projector 10. The special command may be, for example, pressing multiple predetermined operation buttons, such as a power button and a setting button, simultaneously, or may be operating multiple predetermined operation buttons in sequence, such as the setting button, microphone button, and home button in that order. Also, the special command may be, for example, pressing a predetermined one of the operation buttons on the housing at the same time as connecting the power cable to the housing of the projector 10. 【0044】 Switching to the administrator authority mode may be performed, for example, by inputting a special command to an operation button provided on a remote controller of the projector 10. In this case, as with the operation buttons on the housing, the special command may be, for example, pressing a plurality of predetermined operation buttons simultaneously, or may be sequentially operating a plurality of predetermined operation buttons. Also, the special command may be, for example, pressing a predetermined one of the operation buttons on the remote controller at the same time as connecting the power cable to the housing of the projector 10. 【0045】 FIG. 4 is a schematic diagram showing a setting screen D1 in the administrator authority mode. The setting screen D1 shown in FIG. 4 is projected onto a screen by the projector 10. The setting screen D1 includes an interface F11 for setting the operation mode of the projector 10. The setting interface F11 includes a button indicating the general mode and a button indicating the hotel mode, and the button indicating the currently selected mode is displayed in a color different from that of the other buttons. In FIG. 4, the hotel mode is selected. When an employee wishes to switch the operation mode to the general mode, the employee moves the cursor C to the button indicating the general mode using the operation buttons on the housing of the projector 10 or the remote controller. Then, when the employee presses a predetermined button on the housing or the remote controller, such as the decision button, with the button indicating the general mode and the cursor C overlapping, the operation mode of the projector 10 is changed from the hotel mode to the general mode. 【0046】 4 includes an interface F11 for setting an operation mode, an interface F12 for setting a color mode, an interface F13 for setting whether or not to display an OSD (On-Screen Display), and an interface F14 for setting whether or not to restrict the use of applications. In addition, for example, an interface for setting a maximum volume, an interface for setting a volume when the power is turned on, an interface for setting a home address when the power is turned on, etc. may be displayed on the setting screen D1. 【0047】 The execution unit 172 executes application software. More specifically, when the projector 10 operates in the general mode or the hotel mode, the execution unit 172 executes application software designated by the user. The application software is software that is installed in the projector 10 and realizes various functions. Specifically, the projector 10 is installed with application software A for watching videos of a video distribution service A, and application software B for watching videos of a video distribution service B. The application software is not limited to video viewing, and may be software that realizes the functions of a game or an Internet browser, for example. In the drawings, the "application software" may be referred to as an "app." 【0048】 Fig. 5 is a schematic diagram showing an application software selection screen D2 in the general mode. The selection screen D2 shown in Fig. 5 includes a time display F21, a language setting interface F22, an application software selection interface F23, and an application software addition interface F24. 【0049】 The time display F21 displays the current time. The language setting interface F22 specifies the language of the text information displayed by the projector 10. In the example of Fig. 4, Japanese, English, or Chinese can be selected, and of these, Japanese is shown as being selected. 【0050】 The application software selection interface F23 is an interface for selecting application software to be executed by the projector 10. In the example of FIG. 5, the selection interface F23 includes an app (application software) button indicating the name of the application software installed in the projector 10, and an instruction button indicating an instruction for the application software. The application buttons include an "app A button", an "app B button", and an "app C button". The instruction buttons include an "initial setting button" for initial setting the application software, a "launch button" for starting the application software, and an "uninstall button" for uninstalling the application software from the projector 10. The user moves the cursor C to select a button corresponding to the desired application, and then selects an instruction button corresponding to an instruction for the application software. For example, if the user wants to use application software A, the user selects the "app A button" and then selects the "launch button". 【0051】 The application software adding interface F24 is an interface for installing application software in the projector 10. The adding interface F24 includes an "add application button." When the user selects the "add application button," the projector 10 connects to an application store via the network N and displays the application store screen. The user selects the desired application software and installs the application software in the projector 10. 【0052】 Thus, in the general mode, the user can install application software in the projector 10. In other words, while operating in the general mode, the projector 10 accepts an instruction to install new application software in its own device, and installs the new application software in its own device. 【0053】 6 is a schematic diagram showing an initial screen D3 in the hotel mode. When a user who is a guest checks in to the hotel H and turns on the projector 10 in the guest room assigned to the user, a welcome message for the guest, a guide to the hotel, etc. are projected. 【0054】 The initial screen D3 includes a time display F31, a language setting interface F32, a welcome message F33, and a function selection interface F34. The time display F31 and the language setting interface F32 are similar to the time display F21 and the language setting interface F22 in Fig. 5. The welcome message F33 is a message welcoming the user to stay at Hotel H. 【0055】 The function selection interface F34 is an interface for switching between functions executed by the projector 10. The selection interface F34 includes an in-house guide button F35, an application use button F36, and a television button F37. When the in-house guide button F35 is selected, information such as a map of Hotel H, opening hours of facilities within the hotel, and tourist information for the surrounding area is displayed. When the application use button F36 is selected, the display transitions to the application software selection screen D4 shown in FIG. 7. When the television button F37 is selected, a television broadcast is displayed. 【0056】 Fig. 7 is a schematic diagram showing an application software selection screen D4 in the hotel mode. The selection screen D4 shown in Fig. 7 includes a time display F41, a language setting interface F42, an application software selection interface F43, and a warning message F44. The time display F41 and the language setting interface F42 are similar to the time display F21 and the language setting interface F22 in Fig. 5. 【0057】 The application software selection interface F43 is an interface for selecting application software to be executed on the projector 10, similar to the selection interface F23 in FIG. 5. In the example of FIG. 7, the selection interface F43 includes an application button indicating the name of the application software installed in the projector 10, and a start button for that application software. The application buttons include an "app A button", an "app B button", and an "app C button". The user moves the cursor C to select the button corresponding to the application software they wish to use, and then selects the start button. For example, if they wish to use application software A, they select the "app A button" and then select the "start button". 【0058】 Unlike the selection interface F23 in Fig. 5, the selection interface F43 in Fig. 7 does not include an initial setting button or an uninstall button. Also, unlike the selection screen D2 in Fig. 5, the selection screen D4 in Fig. 7 does not include an application software addition interface F24. This is because, since an unspecified number of people use the projector 10 in the hotel mode, inconveniences may occur if a user changes the initial settings of application software or installs or uninstalls application software. 【0059】 7 indicates that the user cannot install new application software, and that the registration information and viewing history entered when using the application software will be deleted when the projector 10 is turned off. 【0060】 Returning to the explanation of FIG. 3, the user information processing unit 173 performs control for associating the user information used by the application software with the projector 10 that executes the application software. If the application software is application software for watching videos of a video distribution service that distributes videos via the network N, the user information includes at least one of an account name for the video distribution service, a password, and a video viewing history. In addition, the user information may include an age setting, the presence or absence of subtitles, a language setting, a preferred genre, etc. 【0061】 The user information processing unit 173 associates the user information with the projector 10 in both the general mode and the hotel mode. If the initial settings of the projector 10 are set so that the user information is not associated with the projector 10, or if the user of the projector 10 sets so that the user information is not associated with the projector 10, the user information processing unit 173 does not need to associate the user information with the projector 10. 【0062】 How the user information is associated with the projector 10 varies depending on the application software, but examples include the following method 1 or method 2. Method 1 and method 2 may be performed simultaneously. 【0063】 Method 1: Storing in the storage device 16 of the projector 10 Information entered into application software A for viewing videos from video distribution service A is associated with identification information of application software A and stored as data 164 in storage device 16 of projector 10. When application software A is used from the next time onwards, user information processing unit 173 reads information associated with application software A from storage device 16 and automatically enters it, thereby saving the user the trouble of having to enter information. In method 1, mainly the user's account name, password, etc. are saved. 【0064】 Method 2: Storing in a storage device of the video distribution server 30B For example, in the case where the fee is set according to the number of terminals capable of viewing videos in video distribution service B provided by video distribution server 30B, the identification information of the terminal used for viewing the video, i.e., the identification information of projector 10, is stored in video distribution server 30B. In addition, the viewing history and various settings when viewing a video using projector 10 are associated with the identification information of projector 10 and stored in video distribution server 30B. Projector 10 transmits user information specified by application software B and the identification information of projector 10 to video distribution server 30B. 【0065】 Furthermore, the user information processing unit 173 performs control to cancel the association between the user information and the projector 10 when a predetermined condition is met. The predetermined condition is, for example, when the projector 10 is powered off in the hotel mode. That is, when the projector 10 is powered off in the hotel mode, the user information processing unit 173 performs control to cancel the association between the user information and the projector 10. Furthermore, when the projector 10 transitions to a standby state in the hotel mode, the user information processing unit 173 maintains the association between the user information and the projector 10. In other words, the hotel mode includes performing control to cancel the association between the user information and the projector 10 when the projector 10 is powered off, and maintaining the association between the user information and the projector 10 when the projector 10 transitions to a standby state. 【0066】 An example of a case where the projector 10 is turned off in the hotel mode is when the user checks out of the hotel H. By deleting the user information of the application software at the time of check-out, it is possible to prevent the user information from being known to other guests. Also, for the employees of the hotel H, the user information is automatically deleted when the projector 10 is turned off, so that the employee does not have to go through the trouble of deleting the user information of each projector 10, and this makes work more efficient. An example of a case where the projector 10 goes into standby mode in the hotel mode is when the user temporarily stops using the projector 10, such as when the user is out or asleep. In such a case, the employee does not have to go through the trouble of re-entering the user information by maintaining the association between the user information and the projector 10. 【0067】 When the association between the user information and the projector 10 is performed by method 1, the control for dissolving the association is, for example, deleting the user information from the storage device 16. When the association between the user information and the projector 10 is performed by method 2, the control for dissolving the association is sending a request to delete the user information associated with the projector 10 to the video distribution server 30B. 【0068】 Furthermore, when projector 10 is powered off in the general mode, user information processing unit 173 maintains the association between the user information and projector 10. Furthermore, when projector 10 transitions to a standby state in the general mode, user information processing unit 173 maintains the association between the user information and projector 10. 【0069】 In the general mode, it is not assumed that the projector 10 will be used by an unspecified number of people. Therefore, even if the projector 10 is powered off, the user information processing unit 173 maintains the association between the user information and the projector 10. This saves the user the trouble of having to re-enter the user information. 【0070】 In addition, in either hotel mode or general mode, if a user instructs the projector 10 to cancel the association between the user information and the projector 10 while using the projector 10, the user information processing unit 173 performs control to cancel the association between the user information and the projector 10. 【0071】 A-5. Operation of the processing device 17 Next, a description will be given of the operation of the processing device 17. The following flowchart shows the flow of an information processing method executed by the processing device 17 in accordance with the control program 162. 【0072】 8 is a flowchart showing a process flow in the general mode. The processing device 17 functions as the power control unit 170, and waits until the power is turned on, for example, by operating the power button of the operation device 12 (step S100: NO). When the power is turned on (step S100: YES), the processing device 17 judges whether or not an instruction to install new application software has been given (step S102). When an instruction to install new application software has been given (step S102: YES), the processing device 17 acquires program data of the new application software via the network N and installs the new application software in the processing device (step S104). When an instruction to install new application software has not been given (step S102: NO), the processing device 17 advances the process to step S106. 【0073】 The processing device 17 functions as an execution unit 172, and launches and executes the application software specified by the user (step S106). The processing device 17 functions as a user information processing unit 173, and associates user information input or generated during execution of the application software with the projector 10 (step S108). Until execution of the application software is terminated (step S110: NO), the processing device 17 returns the process to step S106 and continues execution of the application software and association of the user information with the projector 10. 【0074】 When the execution of the application software is terminated (step S110: YES), the processing device 17 judges whether or not an operation has been performed to instruct a transition to a standby state (step S112). If an operation has been performed to instruct a transition to a standby state (step S112: YES), the processing device 17 functions as the power control unit 170 and transitions the projector 10 to the standby state (step S114). After that, the processing device 17 returns the process to step S100. Note that in step S100 in the standby state, processing is also performed according to the operation of buttons other than the power button. 【0075】 If an operation to instruct a transition to the standby state is not performed (step S112: NO), the processing device 17 judges whether or not an operation to instruct a power-off has been performed (step S116). If an operation to instruct a power-off has been performed (step S116: YES), the processing device 17 functions as the power control unit 170 and turns off the power of the projector 10 (step S118). Thereafter, the processing device 17 returns the process to step S100. If an operation to instruct a power-off has not been performed (step S116: NO), the processing device 17 returns the process to step S102. 【0076】 In this way, in the general mode, the association between the user information and the projector 10 is not canceled even if the projector 10 is turned off or in a standby state. Therefore, the user can omit inputting the user information into the projector 10, improving user convenience. 【0077】 In addition, new application software can be installed in the general mode, which can expand the uses of the projector 10, for example by installing application software for using a newly released service. 【0078】 9 is a flowchart showing the flow of processing in the hotel mode. The processing device 17 functions as the power control unit 170 and waits until the power is turned on, for example, by operating the power button of the operation device 12 (step S200: NO). When the power is turned on (step S200: YES), the processing device 17 functions as the execution unit 172 and starts and executes application software designated by the user (step S202). The processing device 17 functions as the user information processing unit 173 and associates user information input or generated during the execution of the application software with the projector 10 (step S204). Until the execution of the application software is terminated (step S206: NO), the processing device 17 returns to the process in step S202 and continues the execution of the application software and the association of the user information with the projector 10. 【0079】 When the execution of the application software is terminated (step S206: YES), the processing device 17 judges whether or not an operation to instruct a transition to a standby state has been performed (step S208). If an operation to instruct a transition to a standby state has been performed (step S208: YES), the processing device 17 functions as the power control unit 170 and causes the projector 10 to transition to the standby state (step S210). After that, the processing device 17 returns the process to step S200. 【0080】 If an operation to instruct a transition to the standby state is not performed (step S208: NO), the processing device 17 judges whether or not an operation to instruct a power-off has been performed (step S212). If an operation to instruct a power-off has been performed (step S212: YES), the processing device 17 functions as the user information processing unit 173 and dissolves the association between the user information and the projector 10 (step S214). Then, the processing device 17 functions as the power control unit 170 and turns off the power of the projector 10 (step S216). After that, the processing device 17 returns the process to step S200. If an operation to instruct a power-off has not been performed (step S212: NO), the processing device 17 returns the process to step S202. 【0081】 In this way, in the hotel mode, the association between the user information and the projector 10 is maintained when the projector 10 is in standby mode, but is dissolved when the power is turned off. Therefore, while the user is staying at the hotel H, input of user information can be omitted by putting the projector 10 in standby mode rather than turning it off. Also, when the user checks out of the hotel H, the association between the user information and the projector 10 can be dissolved by turning off the power of the projector 10. Therefore, the risk of user information leaking can be reduced, and the burden on the employees of the hotel H can be reduced. 【0082】 A-6. Summary of embodiments As described above, the display device according to the first embodiment associates user information used by application software with the display device that executes the application software. Furthermore, when the display device is powered off during operation in the first mode, the display device disassociates the user information from the display device, and when the display device transitions to a standby state, the display device maintains the association between the user information and the display device. 【0083】 This allows the user information to be associated with the display device, so that when using application software multiple times, input of user information can be omitted and control based on the user information can be executed, improving user convenience. Furthermore, when the power is turned off, the association between the user information and the display device is released, so the work of the user or third party is reduced compared to when the user or third party manually releases the association. The third party is, for example, an employee of Hotel H. Furthermore, it is possible to prevent the user information from being seen by others or leaked to others due to forgetting to release the association. 【0084】 In addition, the display device operates in a second mode in which the association between the user information and the display device is maintained when the power of the display device is turned off, and the association between the user information and the display device is maintained when the display device transitions to a standby state. 【0085】 This allows the association between the user information and the display device to be maintained even when the display device is powered off, improving user convenience when the display device is used continuously. 【0086】 The display device also accepts selection of one of a plurality of operation modes including a first mode and a second mode. 【0087】 This allows switching between the first mode and the second mode, so that the handling of user information can be changed depending on the user or the usage environment of the display device, improving user convenience. 【0088】 Furthermore, when a first operation is performed on the power button while the power is on, the display device transitions to a standby state, and when a second operation, which is more complicated than the first operation, is performed on the power button, the display device is turned off. 【0089】 This reduces the possibility of turning off the power to the display device due to an incorrect operation, and prevents the association between the user information and the display device from being erroneously released. 【0090】 Furthermore, if the application software is application software for viewing videos of a video distribution service, the user information includes at least one of an account name, password, and video viewing history of the video distribution service. 【0091】 This allows the user to omit inputting at least one of the account name and password when logging in to the video distribution service. Alternatively, the user can determine the next video to watch based on the viewing history in the video distribution service, or can determine the videos that the video distribution server displays as recommendations based on the viewing history. 【0092】 Additionally, new application software can be installed on the display device while the display device is operating in the second mode. 【0093】 This allows new application software to be installed on the display device, improving the convenience of the display device. Also, by disabling the installation of new application software in the first mode, it is possible to prevent application software from being installed without permission on a display device used by an unspecified number of users. 【0094】 B. Second embodiment A second embodiment of the present invention will be described. Note that, in each of the following exemplary embodiments, for elements whose functions are similar to those of the first embodiment, the reference numerals used in the description of the first embodiment will be used and detailed descriptions of each will be omitted as appropriate. 【0095】 10 is a diagram showing a display system 2 according to the second embodiment. As in the first embodiment, the display system 2 includes a plurality of projectors 10, an in-house communication management device 20, and video distribution servers 30A and 30B. In the second embodiment, a central management device 60 is installed in a hotel H. It is assumed that the projector 10 is set to the hotel mode in the hotel H. 【0096】 The central management device 60 manages various information for the entire hotel H. Examples of the various information include personal information of guests staying in each guest room of the hotel H, the reservation status of each guest room, and operation information of the devices in each guest room. The central management device 60 is capable of communicating with the projectors 10 installed in each guest room via the on-site communication management device 20. 【0097】 In the first embodiment, the power on / off of the projector 10 was left to the users who used each guest room. However, it is expected that there will be a certain number of users who forget to turn off the projector 10 before checking out. Therefore, in the second embodiment, the staff of the hotel H uses the central management device 60 to check the power status of the projector 10 in each guest room, and remotely turns off the projector 10 if necessary. 【0098】 Fig. 11 is a schematic diagram showing a display screen D5 of the operating status of the projector 10. The display screen D5 shown in Fig. 5 is displayed on the display of the central management unit 60. The display screen D5 includes a time display F51, an operating status F52, and a power off instruction button F53. 【0099】 The time display F51 indicates the current time including the date. The operating status F52 includes a guest room number F52A, a power status F52B, and a scheduled check-out date and time F52C. The guest room number F52A indicates the number of the guest room in which the projector 10 is installed. In the example of FIG. 11, the number of the guest room in which the projector 10 is installed is used as identification information for identifying the projector 10. The power status F52B indicates the power status of the projector 10 and is indicated as either "power on," "standby state," or "power off." The scheduled check-out date and time F52C is the scheduled check-out date and time that is determined based on the reservation information of the guest room. The power off instruction button F53 is a button for transmitting a signal to the projector 10 to instruct it to turn off the power. 【0100】 An employee of Hotel H checks whether there is any projector 10 that should be turned off based on the operation status F52. For example, the projector 10 in room 101 is on, and the projector 10 in room 102 is on standby. The scheduled check-out dates and times of guests using these rooms are after the current time, meaning that the guests using these rooms are still in their stay, so there is no problem with the status of the projectors 10. Additionally, the scheduled check-out date and time for room 103 has passed, but the projector 10 is off, so there is no problem. 【0101】 On the other hand, the scheduled check-out date and time for Room 104 has passed, but the projector 10 is in standby mode. In this case, it is predicted that the guest staying in Room 104 checked out without turning off the power of the projector 10. In order to dissolve the association between the user information and the projector 10, it is necessary to turn off the power of the projector 10. The employee moves the cursor C to the display of the operating status F52 for Room 104 and selects that display. After that, the employee moves the cursor C to the power off instruction button F53 and selects the power off instruction button F53, and a signal instructing the projector 10 in Room 104 to turn off the power is sent from the central management unit 60 to the projector 10. 【0102】 When the processing device 17 of the projector 10 in room 104 receives the signal to turn off the power, it functions as a user information processing device 173 and dissolves the association of the user information. Then, the processing device 17 functions as a power control device 170 and turns off the power of the projector 10. In other words, the projector 10 in room 104 receives a signal to turn off the power of the projector 10 from the central management device 60 connected to the projector 10 via a network. The network in this case is the internal network of hotel H. The projector 10 in room 104 turns off the power of the projector 10 based on the signal. The central management device 60 is an example of an information processing device. 【0103】 Also, instead of having an employee check the status of the projector 10 in each guest room as described above, the central management device 60 may automatically transmit a signal to turn off the power of the projector 10. In this case, the central management device 60 extracts guest rooms whose scheduled check-out date and time F52C is earlier than the current time, that is, guest rooms whose scheduled check-out date and time F52C has passed, and determines whether the power status of the projector 10 in the guest room is "power off". If there is a guest room that is not "power off", the central management device 60 transmits a signal to turn off the power to the projector 10 in the guest room. In other words, the signal to turn off the power of the projector 10 may be transmitted based on information indicating the period during which the projector 10 is used. The period during which the projector 10 is used is the period during which the user has the right to use the guest room in which the projector 10 is installed, and the end of the period is indicated by, for example, the scheduled check-out date and time F52C. 【0104】 As described above, the display device according to the second embodiment turns off the power supply of the display device based on a signal for turning off the power supply of the display device transmitted from an information processing device connected to the display device via a network. 【0105】 This allows the power supply of the display device to be turned off from an information processing device connected to the display device via a network, thereby enabling the association between the user information and the display device to be released from a location away from the display device, improving convenience for the user or a third party. 【0106】 Moreover, the signal to turn off the power supply is transmitted based on information indicating the period during which the display device is to be used. 【0107】 This makes it possible to release the association between the user information and the display device at an appropriate timing, for example, by releasing the association between the user information and the display device after the end of the period during which the display device is used. 【0108】 C. Modifications Each of the above-mentioned exemplary embodiments may be modified in various ways. Specific modified embodiments that may be applied to each of the above-mentioned embodiments are illustrated below. Two or more embodiments selected from the following examples may be appropriately combined as long as they are not mutually contradictory. 【0109】 C-1. Variation 1 In the above-described embodiment, the display device has been described as the projector 10. However, the display device is not limited to this, and may be a computer connected to a display, a portable information processing device equipped with a display, a smart television, or the like. The display may be, for example, a flat panel display (FPD). The FPD is, for example, a liquid crystal display, a plasma display, or an organic electroluminescence (EL) display. The display is an example of an optical device. 【0110】 C-2. Variation 2 In the above-described embodiment, in the hotel mode, when the projector 10 is turned off, the association between the user information and the projector 10 is cancelled, and when the projector 10 transitions to a standby state, the association between the user information and the projector 10 is maintained. Also, in the general mode, when the projector 10 is turned off and when the projector 10 transitions to a standby state, the association between the user information and the projector 10 is maintained. 【0111】 Without being limited thereto, for example, the projector 10 may have an operation mode in which the association between the user information and the projector 10 is dissolved both when the projector 10 is powered off and when the projector 10 transitions to a standby state. Also, for example, the projector 10 may have an operation mode in which the association between the user information and the projector 10 is maintained when the projector 10 is powered off, and the association between the user information and the projector 10 is dissolved when the projector 10 transitions to a standby state. 【0112】 C-3. Variation 3 In the above-described embodiment, the projector 10 executes the application software. However, the present invention is not limited to this, and for example, an information processing device connectable to the projector 10 may execute the application software. The information processing device may be a memory stick-shaped information processing device that does not include a display and has a connector connectable to the projector 10. In this case, the projector 10 and the memory stick-shaped information processing device function as display devices. 【0113】 C-4. Variation 4 In the above-described embodiment, application software A and B were installed in the projector 10 to provide a video distribution service. However, other application software that uses user information, such as account services, games, mail order, etc., may be installed in the projector 10 and the projector 10 may be controlled in a plurality of modes including a general mode and a hotel mode. 【0114】 D: Summary of this disclosure The following is a summary of this disclosure. 【0115】 (Appendix 1) An information processing method comprising: operating in a first mode, the method including: performing control to associate user information used by application software with a display device executing the application software; performing control to disassociate the user information from the display device when the power of the display device is turned off; and maintaining the association between the user information and the display device when the display device transitions to a standby state. 【0116】 This allows the user information to be associated with the display device, so that when using application software multiple times, input of user information can be omitted and control based on user information can be executed, improving user convenience. Furthermore, when the power is turned off, the association between the user information and the display device is released, so the effort required by the user or third party is reduced compared to when the user or third party manually releases the association. Furthermore, it is possible to prevent the user information from being seen by others or leaked to others due to forgetting to release the association. 【0117】 (Appendix 2) The information processing method of claim 1, further comprising operating in a second mode including maintaining an association between the user information and the display device when the power of the display device is turned off, and maintaining an association between the user information and the display device when the display device transitions to a standby state. 【0118】 This allows the association between the user information and the display device to be maintained even when the display device is powered off, improving user convenience when the display device is used continuously. 【0119】 (Appendix 3) 3. The information processing method of claim 2, further comprising accepting a selection of one operation mode from among a plurality of operation modes including the first mode and the second mode. 【0120】 This allows switching between the first mode and the second mode, so that the handling of user information can be changed depending on the user or the usage environment of the display device, improving user convenience. 【0121】 (Appendix 4) An information processing method according to any one of appendixes 1 to 3, further comprising: receiving a signal to turn off the power of the display device from an information processing device connected to the display device via a network; and turning off the power of the display device based on the signal. 【0122】 This allows the power supply of the display device to be turned off from an information processing device connected to the display device via a network, thereby enabling the association between the user information and the display device to be released from a location away from the display device, improving convenience for the user or a third party. 【0123】 (Appendix 5) 5. The information processing method according to claim 4, wherein the signal is transmitted based on information indicating a period during which the display device is to be used. 【0124】 This makes it possible to release the association between the user information and the display device at an appropriate timing, for example, by releasing the association between the user information and the display device after the end of the period during which the display device is used. 【0125】 (Appendix 6) The information processing method according to any one of Appendix 1 to 3, further comprising: when a first operation is performed on a power button of the display device while the power of the display device is on, the display device transitions to the standby state; and when a second operation, which is more complicated than the first operation, is performed on the power button, the power of the display device is turned off. 【0126】 This reduces the possibility of turning off the power to the display device due to an incorrect operation, and prevents the association between the user information and the display device from being erroneously released. 【0127】 (Appendix 7) An information processing method described in any one of Appendices 1 to 3, wherein the application software is application software for video viewing of a video distribution service that distributes videos via a network, and the user information includes at least one of an account name and password for the video distribution service, and a viewing history of the video. 【0128】 This allows the user to omit inputting at least one of the account name and password when logging in to the video distribution service. Alternatively, the user can determine the next video to watch based on the viewing history in the video distribution service, or can determine the videos that the video distribution server displays as recommendations based on the viewing history. 【0129】 (Appendix 8) The information processing method described in Appendix 2 or 3, further comprising: receiving an instruction to install new application software on the display device while operating in the second mode; and installing the new application software on the display device. 【0130】 This allows new application software to be installed on the display device in the second mode, improving the convenience of the display device. Also, by disabling the installation of new application software in the first mode, it is possible to prevent application software from being installed without permission on a display device used by an unspecified number of users. 【0131】 (Appendix 9) A display device comprising an optical device and a processing device, wherein the processing device operates in a first mode, including executing application software, performing control to associate user information used by the application software with the device itself, performing control to disassociate the user information from the device itself when the device is powered off, and maintaining the association between the user information and the device itself when the device transitions to a standby state. 【0132】 (Appendix 10) A program that causes a processing device to operate in a first mode, including controlling the processing device to associate user information used by application software with a display device that executes the application software, controlling the processing device to disassociate the user information from the display device when the power of the display device is turned off, and maintaining the association between the user information and the display device when the display device transitions to a standby state. [Explanation of symbols] 【0133】 1,2...display system, 10...projector, 12...operation device, 13...communication device, 14...optical device, 15...speaker, 16...storage device, 17...processing device, 170...power control unit, 171...mode switching unit, 172...execution unit, 173...user information processing unit, 20...in-house communication management device, 30A, 30B...video distribution server, 60...central management device, H...hotel, N...network.

Claims

[Claim 1] To perform control to associate user information used by application software with the display device on which the application software is executed, When the power to the display device is turned off, control is performed to dissolve the association between the user information and the display device. This includes maintaining the association between the user information and the display device when the display device transitions to a standby state. Including operating in the first mode, Information processing methods. [Claim 2] When the power to the display device is turned off, the association between the user information and the display device is maintained. When the display device transitions to a standby state, the association between the user information and the display device is maintained. To operate in a second mode that includes, The information processing method according to claim 1, further comprising: [Claim 3] The system accepts the selection of one operating mode from among a plurality of operating modes, including the first mode and the second mode. The information processing method according to claim 2, further comprising: [Claim 4] The information processing device connected to the display device via a network receives a signal to turn off the power of the display device, The further includes turning off the power to the display device based on the aforementioned signal, The information processing method according to any one of claims 1 to 3. [Claim 5] The signal is transmitted based on information indicating the period during which the display device is used. The information processing method according to claim 4. [Claim 6] When the power of the display device is turned on, if the first operation is performed on the power button of the display device, the display device will transition to the standby state. If a second operation, which is more complex than the first operation, is performed on the power button, the power to the display device is turned off. The information processing method according to any one of claims 1 to 3, further comprising: [Claim 7] The aforementioned application software is video viewing application software for a video distribution service that delivers video over a network. The user information includes at least one of the account name, password, and video viewing history for the video streaming service. The information processing method according to any one of claims 1 to 3. [Claim 8] During operation in the second mode described above, the system accepts instructions for installing new application software on the display device, Installing the new application software on the display device, The information processing method according to claim 2 or 3, further comprising: [Claim 9] Optical devices and A display device including a processing device, The aforementioned processing apparatus is Running application software and The application software performs control to associate user information used by the application software with the display device. When the power to the display device is turned off, control is performed to dissolve the association between the user information and the display device. This includes maintaining the association between the user information and the display device when the display device transitions to a standby state. To operate in the first mode and to perform, Display device. [Claim 10] In the processing unit, To perform control to associate user information used by application software with the display device on which the application software is executed, When the power to the display device is turned off, control is performed to dissolve the association between the user information and the display device. This includes maintaining the association between the user information and the display device when the display device transitions to a standby state. To operate in the first mode and to execute, program.

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