JP2018205628A - Display controller, display control method and computer program - Google Patents

Abstract

To provide a display controller capable of easily performing display control responding to a person's operation paying attention to a display device, a display control method, and a computer program.SOLUTION: A display controller which has a connection part and controls display in a display device connected via the connection part includes: a storage part storing an image or a moving image; an output part outputting the image or moving image to the display device via the connection part when connected to the display device via the connection part; a detection part which detects specific speech from a person present in a range where the image or moving image displayed on the display device is visible or specific operation by the person; and a display change part which changes display in the display device as a response to the specific speech or operation when the detection part detects the specific speech or operation.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a display control device, a display control method, and a computer program that easily realize digital signage.

  Electronic signage (digital signage) systems that display moving images for advertisement on a display device installed in a place where an unspecified number of publics pass, as well as advertisements such as posters and signboards, are widespread. In such a system, a moving image is stored in advance in a control device that controls an electronic signboard, that is, a display device, and the stored moving image is simply displayed in a cyclic manner, or is connected in communication with the display device. The display contents are controlled by the content distribution server (Patent Document 1, etc.). In addition, there is a system in which a content client device called a set-top box is connected to a display device, and the client device receives content data from a distribution server device via a network and displays the content data on the display device (Patent Document). 2 etc.).

  In recent digital signage, not only a moving image is displayed according to a schedule, but also processing such as changing the display content to a content that interests a person existing in front of the display device has been proposed (Patent Literature). 3, 4 etc.).

Japanese Patent Laying-Open No. 2015-095004 JP 2017-033441 A JP, 2006-177265, A JP 2017-009652 A

  In many cases in which content data is provided from a content distribution server in the digital signage system disclosed in Patent Documents 1-4, a display device that actually displays advertisements or public signs and the content distribution server are remote from each other. It is arranged in the state. Therefore, it is assumed that the display device or the client device connected to the display device is connected to the content distribution server by communication to transmit and receive information bidirectionally.

  Further, in order to realize a technique for changing the display to a specific content in which a specific person existing in front of the display device is interested, as disclosed in Patent Document 3 or Patent Document 4, the specific It is possible to communicate with a portable terminal device possessed by a person.

  As described above, in the digital signage system, a large-scale system is required such that the display device can be securely connected to the content distribution server by communication. Further, in order to perform display control according to a specific person who pays attention to the display device, a large-scale work and cost such as replacement of a control program for the display device are required.

  The present disclosure has been made in view of such circumstances, and provides a display control device, a display control method, and a computer program capable of easily realizing display control in response to an action of a person who pays attention to the display device. For the purpose.

  The display control device of the present disclosure is a display control device that has a connection unit and controls display on a display device connected via the connection unit, and stores a storage unit that stores an image or a moving image; An output unit that outputs an image or a moving image stored in the storage unit to the display device via the connection unit when connected to the display device via the connection unit; When a specific sound from a person existing in a range where a displayed image or moving image is visible, or a specific action by the person, and when the detection part detects a specific sound or action And a display changing unit for changing the display on the display device as a response to the specific sound or operation.

  A display control method according to the present disclosure is a display control method in which a computer having a connection unit and a storage unit controls display on a display device connected via the connection unit, and the computer is configured via the connection unit. The image or moving image stored in the storage unit is output to the display device via the connecting unit, and the image or moving image displayed on the display device is output. When a specific sound from a person existing in a viewable range or a specific action by the person is detected and a specific sound or action is detected, a response to the specific sound or action is detected in the display device. Execute processing to change the display.

  A computer program according to the present disclosure is a computer program that causes a computer having a connection unit to control display on a display device connected via the connection unit, the computer program including the display device via the connection unit. When connected, the image or moving image stored in the storage unit is output to the display device via the connecting unit, and the image or moving image displayed on the display device is within a visible range. A process of detecting a specific voice from an existing person or a specific action by the person and changing the display on the display device as a response to the specific voice or action when a specific voice or action is detected Is executed.

  In the display control device of the present disclosure, when connected to the display device, an image or moving image stored in the display control device is output so as to be displayed on the display device, and the image or moving image is displayed. In the meantime, when a person existing in front of the display device emits a specific sound or performs a specific operation, the display control device detects the specific sound or specific operation, and according to the detected content The display content on the display device is changed.

  In the display control device according to the present disclosure, the connection unit is a connector having a terminal for transmitting / receiving an image or moving image signal and a control signal to / from the display device, and the exterior casing from which the connector protrudes Is provided.

  In the display control device according to the present disclosure, the display control device has a configuration in which the display control device is attached to the display device including the receptacle of the connector by the configuration having the exterior housing from which the connector protrudes. Realize control.

  With the display control device of the present disclosure, it is possible to easily display digital signage or public signs that control display according to the action of a person who focuses on the display device. Therefore, the existing digital signage display device can be used without being replaced, and the cost can be suppressed, and various contents can be displayed for each display device.

1 is an explanatory diagram illustrating an overview of a display system in Embodiment 1. FIG. 1 is a block diagram illustrating a configuration of a display system according to a first embodiment. 4 is a flowchart illustrating an example of a processing procedure executed in the display system according to the first embodiment. 6 is a block diagram illustrating a configuration of a display system according to Embodiment 2. FIG. 10 is a flowchart illustrating an example of a processing procedure performed by the display control apparatus according to Embodiment 2. FIG. 10 is a block diagram illustrating a configuration of a display system according to a third embodiment. 12 is a flowchart illustrating an example of a processing procedure performed by a display control apparatus according to Embodiment 3.

(Embodiment 1)
FIG. 1 is an explanatory diagram showing an overview of a display system according to the first embodiment. The display system of the present disclosure includes a display device 2 and a display control device 1 connected to the display device 2. In the example shown in FIG. 1, the display control device 1 is in the form of a dongle. Each display control device 1 is provided in an elongated casing 12 in which a connection portion 11 that is an HDMI (High-Definition Multimedia Interface, registered trademark) terminal is exposed. Contains the components. The housing 12 is compact enough to fit in the palm of the operator. The video content displayed on the display device 2 can be controlled with a simple configuration in which the display control device 1 is connected to an input interface (an input unit shown in FIG. 2) provided in the display device 2. In order to prevent the display control device 1 from being easily removed, the microphones provided in the display control device 1 while covering the pillars other than the display unit of the display device 2 in FIG. It is preferable that sound can be collected by the input unit 14).

  In the outline shown in FIG. 1, the display device 2 shows a case of displaying the surrounding guidance as a public sign. In the example shown in FIG. 1, an image showing a map of the periphery is displayed on the display device 2 provided for a pillar of a building. When a person who is interested in the video content (map) displayed on the display device and stops his / her foot performs a specific action among the unspecified number of publics, the display control apparatus 1 responds to the action. It is possible to display or audibly output a call statement relating to a map displayed as a change in display content, for example, “Where is the destination?”, And further accept an operation by voice or action. Hereinafter, the configuration for easily realizing the display control as described above by the display control device 1 will be described in detail.

  FIG. 2 is a block diagram illustrating a configuration of the display system according to the first embodiment. The display system includes a display control device 1 and a display device 2. The display control device 10 includes a control unit 10, a connection unit 11, a storage unit 13, a voice input unit 14, and a sensor 15. The control unit 10 is a microcontroller that uses one or a plurality of CPUs (Central Processing Units) or a multi-core CPU and includes a ROM (Read Only Memory), a RAM (Random Access Memory), an input / output interface, a timer, and the like. The control unit 10 executes the control program stored in the built-in ROM or the storage unit 13 to control display contents on the display device 2 as will be described later.

  The connection unit 11 is an HDMI terminal as described above. The control unit 10 inputs and outputs video signals, audio signals, and control signals to and from the display device 2 via the connection unit 11. The connection unit 11 is not limited to an HDMI terminal as long as it can input and output control signals and video signals transmitted and received by the control unit 10.

  The storage unit 13 is a nonvolatile memory such as a flash memory or an EEPROM (Electrically Erasable Programmable Read-Only Memory). In addition to storing the control program 11P and the voice recognition program 12P, the storage unit 13 stores in advance video content 1D to be displayed on the display device 2.

  The voice input unit 14 is a microphone, and is provided on the surface of the housing 12 of the display control device 1, for example. The directivity of the microphone may be such that when a person stands in a specific range in front of the display device 2, sound (speech or sound due to action) emitted from the person can be input. Note that the voice input unit 14 may use an existing microphone of the display device 2, and the control unit 10 may input a voice signal from the microphone via the connection unit 11. The control unit 10 of the display control device 1 can recognize the voice input by the voice input unit 14 based on the voice recognition program 12P described above. Specifically, the control unit 10 recognizes a specific word (service name, company name, etc.) from the voice input by the voice input unit 14 based on the voice recognition program 12P. Or the control part 10 recognizes the sound by the specific operation | movement of the person in front of the display apparatus 2, for example, a finger snap sound, a clap sound from the audio | voice input with the audio | voice input part 14 based on the audio | voice recognition program 12P. The control unit 10 performs voice recognition processing by software based on the voice recognition program 12P, but may be realized by using a voice recognition IC (Integrated Circuit) instead.

  The sensor 15 is a sensor including an infrared output unit and a light receiving unit. The sensor 15 outputs a signal level corresponding to the distance to an object that is within a light receiving range of the light receiving unit of the sensor 15 provided in the casing of the display control device 1 and is within a predetermined distance. The light receiving unit may be provided in a case different from the case of the display control device 1, and this case may be attached near the edge of the display device 10. The control unit 10 can detect the distance to the object from the signal level output from the sensor 15, and can detect a specific operation of the person in front of the display device 2, such as an operation of holding a hand, from the signal pattern. The sensor 15 is not essential and can be replaced with a visible light camera or the like.

  In addition, the voice input unit 14 and the sensor 15 may be provided as separate components from the housing 12 of the display control device 1 as a sensor body. For example, this may be realized by a sensor body provided on the upper edge of the display device 2, and the sensor body and the control unit 10 may be connected wirelessly or by wire.

  The display device 2 includes a control unit 20, a storage unit 21, a panel 22, a drive unit 23, an input unit 24, and a speaker 25. The control unit 20 controls the operation of each component using a CPU or a microprocessor. The storage unit 21 is a nonvolatile memory such as a flash memory or an EEPROM (Electrically Erasable Programmable Read-Only Memory). The storage unit 21 stores a program for realizing the operation corresponding to the processing of the control unit 10 based on the control program 11P in the display control device 1 on the control unit 20 side. The program is an existing program for automatically recognizing the display control device 1 when the display control device 1 is connected and switching an image to be displayed on the panel 22 to a video signal from the display control device 1. It is a program. In addition, the storage unit 21 stores data referred to by the control unit 20.

  The panel 22 uses a liquid crystal panel, an organic EL (Electroluminescence), or the like. The drive unit 23 drives each element of the panel 22 based on the input video signal to realize image display. The input unit 24 is an HDMI terminal. When the control unit 20 inputs a video signal to be displayed on the panel 22 via the input unit 24, the control unit 20 gives this to the drive unit 23. The speaker 25 outputs sound based on the sound signal given by the control unit 20.

  FIG. 3 is a flowchart illustrating an example of a processing procedure executed in the display system according to the first embodiment. When the control unit 10 of the display control device 1 is activated, it first determines whether or not the connection unit 11 is connected to the display device 2 (step S1). When it is determined that it is not connected (S1: NO), the control unit 10 returns the process to step S1 and waits until it is determined that it is connected. When it is determined that they are connected (S1: YES), the control unit 10 establishes a connection for transmission / reception of control signals with the control unit 20 of the display device 2 (step S2).

  In step S1, the control unit 10 may be activated when connected to the display device 2 in the power-on state by the connection unit 11 and establish a connection for transmission and reception of control signals (S2). In addition, when a power switch is provided in the housing 12 so that the display control device 1 is activated and deactivated by pressing the power switch, and the display control device 1 is activated while being connected to the display device 2 by the connection unit 11. The control signal is output to the display device 2 so that the display device 2 is activated. Further, when the display control device 1 is in a dormant state when connected to the display device 2 by the connection unit 11, the display device 2 is also in a dormant state.

  Next, the control part 10 reads the content 1D memorize | stored in the memory | storage part 13 (step S3), and outputs the video signal contained in the read content 1D from the connection part 11 (step S4). In step S4, the control unit 10 may sequentially output the video signal included in the content 1D, or separately store a schedule in the storage unit 13, and select and output the video signal from the content 1D based on this schedule. May be.

  While outputting the video signal from the content 1D, the control unit 10 recognizes a specific sound or voice based on the voice input unit 14 and the voice recognition program 12P, or performs a specific operation within a predetermined distance by the sensor 15. It is determined whether or not it has been detected (step S5). In step S <b> 5, the control unit 10 determines whether a sound by a specific action (finger snapping, applause) of the person in front of the display device 2 or a specific action (hand holding, hand shaking) is detected.

  If it is determined that a specific operation has been detected (S5: YES), the control unit 10 outputs a video signal to change the content of the video displayed on the display device 2 in accordance with the content of the detected operation (step S6).

  In step S6, for example, the control unit 10 may change the video signal to display a video with detailed information corresponding to the content of the video based on the video signal being output, or the video based on the video signal being output. Characters and other illustrations may be displayed in a superimposed manner. The characters and other illustrations are, for example, a balloon and a guide sentence displayed in the balloon as shown in FIG. For example, the guidance text is a call to accept instructions such as “Where is your destination?” Or “What is your business?”, And the displayed advertising content is being sold at the 11th dealership on the left hand side 10m away. ”Or the like. Since the display control device 1 is connected to the connected display device 2 on a one-to-one basis, information unique to the installation location of the connected display device 2 is stored, and guidance based on the unique information is stored. Can be displayed easily. In step S <b> 6, the control unit 10 may output the control signal so as to output the guidance voice from the speaker 25 provided in the display device 2.

  Thereafter, the control unit 10 determines whether or not an inquiry voice from a specific person is received or a specific operation is received by the sensor 15 based on the voice input unit 14 and the voice recognition program 12P (step S7). When it is determined that the inquiry voice or the specific operation is received (S7: YES), the control unit 10 responds by changing the video signal or outputting the audio from the speaker 25 in response to the received voice or operation ( In step S8), the process returns to step S7 to continue acceptance, and responds each time. The specific action may be, for example, whether or not an action of shaking the hand up and down is performed.

  When it is determined that a specific operation is not detected (S5: NO), or when it is determined that the inquiry voice or the specific operation is not accepted (S7: NO), the control unit 10 connects It is determined whether or not the connection with the display device 2 via the unit 11 has been released (step S9). Step S9 transmits / receives a control signal established when the connection unit 11 is removed from the input unit 24 of the display device 2 or remains connected to the display device 2 and the display device 2 is in a dormant state. It is determined that the connection is released when the connection for the connection is disconnected. In addition, the control unit 10 determines that the connection has been released even when the power switch of the own device is pressed to enter a dormant state.

  If it is determined in step S9 that the connection has not been released (S9: NO), the control unit 10 returns the process to step S4 and continues outputting the video signal. On the other hand, when it is determined that the connection has been released (S9: YES), the control unit 10 ends the process and enters a dormant state.

  Using the display control device 1 configured as described above, the display control device 1 is attached to the input unit 24 (HDMI terminal) of the display device 2 to be displayed. It can be displayed on the device 2. When displaying new content, the display control device 1 may be replaced, or the display control device 1 may be removed and the content 1D stored in the storage unit 13 may be rewritten.

  A specific information exchange with a portable terminal device possessed by a person who watches the content displayed on any of the public display devices 2 by connecting to the content distribution server by the display system shown in the first embodiment It is possible to perform display control according to the operation of the specific person with a simple configuration without performing the above.

(Embodiment 2)
FIG. 4 is a block diagram illustrating a configuration of the display system according to the second embodiment. In the second embodiment, the display control device 1 includes a communication unit 16 in addition to the control unit 10, the connection unit 11, the storage unit 13, the voice input unit 14, and the sensor 15, and the display device 2 further includes a camera 26. . The camera 26 may be provided on the display control device 1 side. In the second embodiment, the components other than the communication unit 16 of the display control device 1 and the camera 26 of the display device 2 in the second embodiment are the same as those in the first embodiment. Detailed description will be omitted.

  The communication unit 16 of the display control device 1 is a wireless communication module. The communication unit 16 is preferably a module conforming to a communication standard that is connected in a one-to-one relationship. For example, BLE (Bluetooth (registered trademark) Low Energy) is used. The control unit 10 can communicate with the mobile terminal device 3 possessed by the person in front of the display device 2 via the communication unit 16.

  The camera 26 of the display device 2 is, for example, a CCD (Charge Coupled Device) camera, and is provided so as to photograph a person standing in front of the display device 2. The storage unit 21 of the display device 2 stores an image recognition program 21P. Based on the image recognition program 21P, the control unit 20 performs a process of extracting a person area by matching or the like from the frame image of the video signal output from the camera 26, and performs a specific operation of the person corresponding to the extracted person area. It is possible to detect. When detecting a specific operation, the control unit 20 notifies the display control device 1. The camera 26 may be provided on the display control device 1 side. In addition, the display control apparatus 1 may input a video signal from the camera 26 and perform a person area extraction process in the control unit 10.

  The mobile terminal device 3 operates as a user interface for the display control device 1. The mobile terminal device 3 is a general-purpose computer such as a so-called smartphone, and includes a control unit 30, a storage unit 31, a communication unit 32, a display unit 33, an operation unit 34, and a voice input unit 35. The controller 30 controls the operation of each component using a CPU. The storage unit 31 is a non-volatile memory such as a flash memory, and stores a guide application 31 </ b> P for the mobile terminal device 3 to operate as a user interface of the display control device 1. The communication unit 32 includes a plurality of communication modules, and one of them communicates with the display control device 1 by BLE according to the communication standard corresponding to the communication unit 16 of the display control device 1, that is, in the second embodiment. Connection is possible. The display unit 33 uses a liquid crystal panel, an organic EL, or the like, and the control unit 30 displays a character input screen or a voice input guidance screen on the display unit 33 based on the guidance application 31P. The operation unit 34 is a touch panel with a built-in panel of the display unit 33 and buttons provided on the housing of the mobile terminal device 3. The control unit 30 receives character input including alphanumeric characters via the operation unit 34. The voice input unit 35 is a microphone, and the control unit 30 can accept a character input by executing a voice recognition process on the voice input by the voice input unit 35 and converting the voice into a text.

  FIG. 5 is a flowchart illustrating an example of a processing procedure performed by the display control device 1 according to the second embodiment. Of the processing procedures shown in the flowchart of FIG. 5, the steps common to the processing procedure shown in FIG. 3 of the first embodiment are denoted by the same step numbers and detailed description thereof is omitted.

  In the second embodiment, the control unit 10 determines whether or not the communication unit 16 can communicate with the mobile terminal device 3 in which the guidance application 31P is activated while outputting a video signal from the content 1D (step S15). When it is determined that communication is not possible (S15: NO), the control unit 10 advances the process to step S5.

  When it is determined that communication is possible (S15: YES), the control unit 10 transmits screen information for displaying a guidance sentence, a character input screen, or a voice input guide to the mobile terminal device 3 from the communication unit 16 (step S1). S16). The control unit 10 receives operation information that is a result of conversion from text or voice input input from the mobile terminal device 3 to text (step S17), performs processing based on the operation information, and outputs a response (step S17). S18), the process returns to step S15.

  When it is determined that communication is not possible (S15: NO), the control unit 10 advances the process to step S5. In the second embodiment, the person region extracted from the frame image based on the video signal from the camera 26 is used for detecting the specific operation in step S5. Upon receiving notification from the control unit 20 of the display device 2 that a specific action of a person has been detected, the control unit 10 determines that a specific action has been detected (S5: YES).

  As shown in the second embodiment, by using the display control device 1 including a wireless communication module capable of short-range wireless communication in one-to-one such as BLE, it is difficult only by voice input or a specific operation. The input operation can be performed on the mobile terminal device 3 that is normally used by a person existing in front of the display device 2. Individual display control is performed with a simple configuration in which the display control device 1 is connected to the display device 2 without being connected to the content distribution server, in a manner convenient for a specific person existing in front of the display device 2. Is possible.

(Embodiment 3)
FIG. 6 is a block diagram illustrating a configuration of the display system according to the third embodiment. In the third embodiment, a plurality of display devices 2 (three in FIG. 6) are installed, and when the display control device 1 is connected to each, one display control device 1 becomes the master and the same video content Are displayed in synchronization with each other, and each display device 2 performs display control according to the user's operation. Note that the display control device 1 serving as a master and the display control device 1 serving as a slave are distinguished depending on whether the control program 11P stored in the storage unit 13 is for a master or a slave.

  The configuration of the display control device 1 in the third embodiment is the same as the configuration of the display control device 1 in the first embodiment except that the communication unit 16 is provided. The communication unit 16 is a communication module that conforms to the BLE standard, for example, as described in the second embodiment. Note that the content control 1D may not be stored in the display control device 1 serving as a slave in contrast to the display control device 1 serving as a master. Display device 2 has the same configuration as display device 2 in the first embodiment. Since the third embodiment is the same as the first or second embodiment except that the connection configuration and the overall processing are different, common components are denoted by the same reference numerals, and detailed descriptions thereof are omitted. .

  In the third embodiment, the communication unit 16 of the display control device 1 uses a module that enables one-to-many connection called multi-hop, mesh or the like while performing one-to-one communication such as BLE. The control unit 10 can be identified and connected to the communication unit 16 of another display control device 1 via the communication unit 16.

  FIG. 7 is a flowchart illustrating an example of a processing procedure performed by the display control device 1 according to the third embodiment. Among the processing procedures shown in the flowchart of FIG. 7, the steps common to the processing procedure shown in FIG. 3 of the first embodiment are denoted by the same step numbers, and detailed description thereof is omitted.

  As shown in FIG. 7, the display control apparatus 1 as a master and the display control apparatus 1 as a slave transmit an output start instruction for synchronizing the output timing of the video signal (step S23), or the output start instruction The same processing procedure is executed except for the difference in the processing of whether to receive (step S24).

  In the display control device 1 that is the master, after the content 1D is read (S3), the control unit 10 transmits other video signals from the read content 1D to the display device 2 before transmitting / receiving by the communication unit 16 An output start instruction is transmitted to the communication unit 16 of the display control device 1 (S23). The output start instruction may start output at a received timing (or a predetermined time after that timing), and each control unit 10 is built in consideration of a transmission delay of an output start instruction by multi-hop. The start time (time stamp) based on the timer to be used may be indicated. The master display control device 1 outputs the video signal to the display device 2 shortly after transmitting the output start instruction or at the instructed start time (S4). Subsequent processing is an individual processing procedure of the display control device 1, but the control unit 10 may periodically return the processing to step S3 or step S23 to synchronize the displayed video.

  In the display control device 1 that is a slave, after reading the content 1D (S3), the control unit 10 outputs another output start instruction from the communication unit 16 before outputting the video signal from the read content 1D to the display device 2. Received from the display control device 1 (S24). The control unit 10 waits until an output start instruction is received, and after receiving the output start instruction, immediately after the received timing or at the time indicated by the output start instruction, the read video signal of the content 1D is displayed on the display device. 2 (S4). Even in the slave display control device 1, the subsequent processing individually performs display control in accordance with the operation of the person in front of the display device 2, but the processing is periodically returned to step S3 or step S24.

  According to the configuration of the display system shown in the third embodiment, the display control device 1 is attached to each of the plurality of display devices 2, and the images displayed on the plurality of display devices 2 are synchronized individually while being synchronized. The display content can be changed according to the action of the person existing in front of the display device 2. For example, in the example shown in FIG. 1, one display device 2 is provided on each of the four sides of the pillar of the building, and the display control device 1 is connected to each of them. The plurality of display devices 2 display images showing the map of the surroundings, and periodically display the moving images for showing the advertising concept of the surrounding facilities on the four display devices 2. When a person stands in front of any one display device 2 and emits a snap sound, for example, only that one display device 2 displays information about a map that displays “Where is the destination?” Can be accepted. Conventionally, in order to realize such display control, a large-scale system has been required, but can be easily realized by using the display control device 1 of the present disclosure.

  It should be understood that the embodiment disclosed above is illustrative in all respects and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Display control apparatus 10 Control part 11 Connection part 12 Case 13 Storage part 14 Voice input part 15 Sensor 16 Communication part 11P Control program 12P Voice recognition program 1D Content 2 Display apparatus

Claims (4)

A display control device that has a connection unit and controls display in a display device connected via the connection unit,
A storage unit storing images or moving images;
An output unit that outputs an image or a moving image stored in the storage unit to the display device via the connection unit when connected to the display device via the connection unit;
A detection unit that detects a specific sound from a person existing in a range in which an image or a moving image displayed on the display device is visible, or a specific action by the person;
A display control device comprising: a display changing unit that changes a display on the display device as a response to the specific sound or action when the detecting unit detects the specific sound or action. The connection unit is a connector with a built-in terminal for transmitting / receiving an image or moving image signal and a control signal to / from a display device, and includes an exterior housing projecting the connector. Item 4. The display control device according to Item 1. A computer having a connection unit and a storage unit is a display control method for controlling display in a display device connected via the connection unit,
The computer
When connected to the display device via the connection unit, an image or a moving image stored in the storage unit is output to the display device via the connection unit,
Detecting a specific sound from a person existing in a range in which an image or a moving image displayed on the display device is visible, or a specific action by the person,
A display control method, comprising: executing a process of changing a display on the display device as a response to a specific sound or action when a specific sound or action is detected. A computer program for causing a computer having a connection unit to control display on a display device connected via the connection unit,
In the computer,
When connected to the display device via the connection unit, an image or a moving image stored in the storage unit is output to the display device via the connection unit,
Detecting a specific sound from a person existing in a range in which an image or a moving image displayed on the display device is visible, or a specific action by the person,
A computer program for executing a process of changing display on the display device as a response to a specific voice or action when a specific voice or action is detected.

Images