Video switching control apparatus, video switching control system, video switching control method, and computer program

Abstract

To improve the usability of a system related to switching videos displayed on a display device.SOLUTION: A receiving unit of a video switching control apparatus receives voice signals output from a plurality of sound collection apparatuses that convert voice into voice signals for output. A recognition unit recognizes, from the received voice signals, using a voice recognition technology, a command to switch a video displayed on a display device to be viewed, as a video switching command. A switching control unit executes processing to switch the video displayed on the display device to be viewed, in accordance with the recognized video switching command. When a plurality of video switching commands are recognized within a predetermined time, the switching control unit executes switching processing that determines a video switching command to be adopted from among the video switching commands, according to predetermined procedures, and switches the video in accordance with the determined video switching command.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a video switching control device, a video switching control system, a video switching control method, and a computer program that control video switching for switching between displaying videos from multiple video sources. [Background technology]

[0002] One type of video display system is a display system that can switch and display video sent from multiple video sources on a display device. Such display devices are installed, for example, in police or fire department control rooms or security company monitoring rooms. In this case, examples of the video images include video images from video cameras capturing the scene of an incident or fire, video images from surveillance cameras installed on street corners, and video images broadcast on television.

[0003] In such a display system, for example, switching of the image displayed on the screen of the display device is performed by the operator of the display system.

[0004] Patent Document 1 (Japanese Patent Laid-Open Publication No. 11-175045) discloses a technique for easily performing display operations on a multi-screen video display device. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 11-175045 Summary of the Invention [Problem to be solved by the invention]

[0006] For example, in police and fire departments, a display device of the above-described display system is installed in a room used as a disaster response room or a general command room in the event of an emergency. In this case, multiple police officers or fire department personnel responding to the emergency may consider countermeasures while viewing images on the same display device. In such a case, if the person considering countermeasures wants to switch the image displayed on the display device to another image, they may instruct an operator of the display system to switch the image. The operator then performs an operation to switch the image, thereby switching the image on the display device.

[0007] In such cases, in order to switch the image displayed on the display device, the operator must perform an operation to switch the image, which is time-consuming and takes time from the time the image switching command is issued until the image displayed on the display device is switched.

[0008] The present disclosure has been devised to solve the above-mentioned problems. That is, a main objective of the present disclosure is to provide a technology that can improve the usability of a system related to switching of images displayed on a display device. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, one aspect of the video switching control device according to the present disclosure is: a receiving unit that receives audio signals output from a plurality of sound collection devices that convert audio into audio signals and output the audio signals; a recognition unit that uses a voice recognition technology to recognize, from the received audio signal, a command requesting switching of the video displayed on the display device to be viewed as a video switching command; a switching control unit that executes a process of switching the video displayed on the display device to be viewed in response to the recognized video switching command; Equipped with When multiple video switching commands are recognized within a predetermined time, the switching control unit determines which video switching command to adopt from among the video switching commands according to a predetermined procedure, and executes a switching process to switch the video in accordance with the determined video switching command.

[0010] In addition, one aspect of the video switching control system according to the present disclosure is The above-mentioned video switching control device; a plurality of sound collection devices that capture audio including a video switching command requesting video switching, convert the audio into audio signals, and output the audio signals; Equipped with.

[0011] Furthermore, one aspect of the video switching control method according to the present disclosure is: By computer, receiving audio signals output from a plurality of sound collection devices that convert audio into audio signals and output the audio signals; Using a voice recognition technology, a command to switch the video displayed on the display device to be viewed is recognized from the received audio signal as a video switching command; If a single video switching command is recognized within a predetermined time, a switching process is executed to switch the video displayed on the display device to be viewed in accordance with the recognized video switching command; When a plurality of video switching commands are recognized within the predetermined time, a video switching command to be adopted is determined from the video switching commands according to a predetermined procedure, and a switching process is executed to switch the video displayed on the display device to be viewed according to the determined video switching command.

[0012] Furthermore, one aspect of the computer program of the present disclosure is A process of receiving audio signals output from a plurality of sound collection devices that convert audio into audio signals and output the converted audio signals; A process of recognizing, from the received audio signal, a command requesting switching of the video displayed on the display device to be viewed as a video switching command using a voice recognition technology; If a single video switching command is recognized within a predetermined time, a switching process is executed to switch the video displayed on the display device to be viewed in accordance with the recognized video switching command. a process of determining, in a case where a plurality of video switching commands are recognized within the predetermined time period, a video switching command to be adopted from among the video switching commands in accordance with a predetermined procedure, and executing a switching process to switch the video displayed on the display device to be viewed in accordance with the determined video switching command; to be executed by the computer. [Effects of the Invention]

[0013] According to the present disclosure, it is possible to improve the usability of a system related to switching of images displayed on a display device. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of a video switching control system. [Figure 2] FIG. 2 is a diagram illustrating an example of the configuration of a video switching control device. [Figure 3] 10 is a diagram illustrating an example of data used in a process in which the video switching control device recognizes a video switching command. [Figure 4] 10 is a diagram illustrating an example of another data used in the process of recognizing a video switching command by the video switching control device. FIG. [Figure 5] 10 is a flowchart illustrating an example of the operation of the video switching control device. [Figure 6] FIG. 10 is a diagram illustrating another example of the configuration of the video switching control device. [Figure 7] FIG. 10 is a diagram illustrating yet another example configuration of the video switching control device. [Figure 8] 10 is a flowchart illustrating another example of the operation of the video switching control device. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

[0016] First Embodiment A video switching control device according to a first embodiment of the present disclosure constitutes a video switching control system 1 as shown in FIG. 1. The video switching control system 1 includes a video switching control device 2, a switching device 3, and a sound collection device 4, and has a function of switching the video displayed on a display device 5. The display device 5 is a device (display) that displays information on a screen using video, text, or the like. In the first embodiment, the display device 5 is installed in, for example, a room used as a disaster response room or general command room in a fire department or police department, or a monitoring room of a security company, and it is assumed that the video displayed on the display device 5 may be viewed by multiple people simultaneously. The display device 5 may be configured as a single display device or a multi-display device configured by multiple display devices. There are various configurations related to the display control of the display device 5, and the configuration of the display device 5 is not limited here, so a description thereof will be omitted.

[0017] The switching device 3 is a device called, for example, a switcher. The switching device 3 can be directly or indirectly connected to a plurality of video sources 9. In the first embodiment, "connecting indirectly" does not only mean connecting via a device such as a video relay device, but also includes cases where video stored in a storage device and read from the storage device is provided to the switching device 3.

[0018] The switching device 3 is configured to be able to individually switch, for each video source 9, between an output state in which video from the video source 9 is output to the display device 5 and a stop state in which output of video to the display device 5 is stopped. In other words, the switching device 3 has a function to control switching between the connection between the display device 5 and a plurality of video sources 9. The video sources 9 connected by the switching device 3 are appropriately set taking into consideration the use of the video to be displayed on the display device 5, and examples of the video sources 9 include, but are not limited to, the following: video cameras mounted on aircraft such as helicopters and drones, surveillance cameras installed on streets, video cameras that capture road traffic conditions, in-vehicle cameras, and video databases that store various videos.

[0019] The switching control of the switching device 3 between the video output state and the stopped state as described above is performed by the video switching control device 2.

[0020] In the first embodiment, a room (hereinafter also referred to as a display room) in which the display device 5 is installed is provided with a plurality of seats. These seats are arranged so that the people 8 seated at the seats can view the display screen of the display device 5. In addition, the display room is provided with personal display devices 7 corresponding to the people 8 seated at the seats. The video output from the switching device 3 is also supplied to the personal display devices 7 and displayed.

[0021] The sound collection devices 4 are installed in the display room in association with the respective seats as described above. The sound collection devices 4 are so-called microphones (microphones) and are configured to convert the captured sound into an audio signal and output it. In the first embodiment, the sound collection devices 4 have performance such as directivity that takes into account the capture of the sound of the person 8 sitting in the associated seat. In the video switching control system 1 in the first embodiment, the sound collection devices 4 are used as devices that capture audio including a video switching command requesting video switching, convert the audio into an audio signal and output it.

[0022] In the first embodiment, in a display room, seats are determined by job titles that represent positions in organizations (workplaces), such as the police or fire department. That is, a correspondence relationship between each seat and a job title is determined. From this, it can be estimated that the audio signal output from the sound collection device 4 is the audio signal of a person 8 who holds a job title that corresponds to the seat associated with the sound collection device 4 that is the output source.

[0023] The video switching control device 2 is a computer device that has the function of receiving a video switching command and controlling the switching device 3 in accordance with the command. The video switching command is a command requesting switching of the video displayed on the display device 5. In the first embodiment, this video switching command is issued by voice from a person (hereinafter also referred to as a user) 8 viewing the display device 5. The video switching control device 2 receives such a voice-based video switching command using a sound collection device 4. In other words, the video switching control device 2 is connected to each of the multiple sound collection devices 4 installed in the display room. The connection configuration in which the video switching control device 2 is connected to the multiple sound collection devices 4 is not limited here, but the connection configuration is such that the video switching control device 2 can recognize (acquire) the relationship between the audio signal input to the video switching control device 2 and the sound collection device 4 that is the output source of the audio signal.

[0024] As shown in FIG. 2, the video switching control device 2 includes a computing device 20 and a storage device 40. The storage device 40 includes a storage medium for storing data and a computer program (hereinafter also referred to as a program) 41. There are multiple types of storage devices, such as magnetic disk drives and semiconductor memory devices, and there are many types of semiconductor memory devices, such as RAM (Random Access Memory) and ROM (Read Only Memory). A computer device may be equipped with multiple types of storage devices depending on the application, but these storage devices will be collectively referred to as storage device 40 without distinction. Furthermore, the type and number of storage devices 40 equipped in the video switching control device 2 are not limited, and their description will be omitted. The video switching control device 2 may also be connected to a database 6, which is a storage device. In this case, the video switching control device 2 may write information to the database 6 or read information from the database 6. However, to avoid complexity of the description, such a case will not be described here.

[0025] The arithmetic device 20 is configured with a processor such as a CPU (Central Processing Unit). The arithmetic device 20 can have functions based on a program 41 by reading and executing the program 41 stored in a storage device 40. Here, the arithmetic device 20 has a receiving unit 21, a recognition unit 22, and a switching control unit 23 as functional units that control switching of the video displayed on the display device 5.

[0026] The receiving unit 21 receives audio signals output from each of the multiple sound collection devices 4 installed in the display room. The received audio signals are stored in the storage device 40, for example, in association with information on the reception time and microphone identification information that identifies the sound collection device 4 that is the output source. Note that the reception times of the audio signals stored in the storage device 40 may be checked at predetermined times, and the oldest signals that have been stored for a predetermined time may be deleted in order.

[0027] The recognition unit 22 uses voice recognition technology to recognize from the received audio signal a command (i.e., a video switching command) requesting switching of the video displayed on the display device 5 (in other words, the display device to be viewed). That is, voice recognition technology converts a person's speech into text information by analyzing the audio signal. This voice recognition technology converts the audio signal received from the sound collection device 4 into text information representing the person's speech (the audio signal is converted into text), and the recognition unit 22 recognizes the video switching command. Command term data is used to recognize this video switching command. The command term data is data representing terms included in the video switching command, and is generated in advance and stored in the storage device 40. The terms included in the command term data include, for example, verbs that are considered to be used in a video switching command, such as "switch" and "project," as well as terms representing the video source 9 as shown in FIG. 3 and, if the display device 5 is a multi-display device, terms representing the screen position as shown in FIG. 4. The screen position can also be considered information that identifies the multiple display devices that make up the multi-display device.

[0028] By using the command term data as described above, the recognition unit 22 recognizes an image switching command such as, for example, "Display the image of Helicopter 1 on Screen 1." Command data representing an image switching command recognized by the recognition unit 22 in this way is added to the command history data stored in the storage device 40 as data constituting the command history data. The command data included in the command history data is associated with recognition time information and microphone identification information. The recognition time information is information about the time when the image switching command in the command data was recognized, and the microphone identification information is identification information that identifies the sound collection device 4 that is the output source of the audio signal that was the source of the image switching command.

[0029] The switching control unit 23 executes switching control of the video displayed on the display device 5 in accordance with the recognized video switching command. That is, the switching control unit 23 controls the operation of the switching device 3 so that the video corresponding to the recognized video switching command is displayed on the display device 5. When the switching control unit 23 controls the operation of the switching device 3, correspondence data between the terms indicating the video source used in the command and the video source 9 corresponding to the terms, as shown in FIG. 3, and correspondence data between the terms indicating the display position of the video used in the command (information for identifying the display device in the case of a multi-display device) and the screen position corresponding to the terms, as shown in FIG. 4, are used. Note that the method of controlling the operation of the switching device 3 so that the video corresponding to the video switching command is displayed on the display device 5 depends on the configuration of the switching device 3 and is not limited here, so a description thereof will be omitted.

[0030] Incidentally, for example, it is conceivable that immediately after a video switching command such as "Display the video of 'Helicopter 1' on 'Screen 1'" is recognized, another video switching command such as "Display the video of 'Street 2' on 'Screen 1'" is recognized as a command from another person. In other words, it is conceivable that a conflicting state will arise in which commands for the video to be displayed on display device 5 (in the above example, commands for the video to be displayed on 'Screen 1') conflict with each other. The switching control unit 23 also has a function that takes such a situation into consideration.

[0031] For example, when a video switching command is newly recognized by the recognition unit 22, the switching control unit 23 determines (checks) whether other video switching commands have been recognized during a predetermined period going back from the recognition (hereinafter also referred to as a conflict check period) by referring to the command history data in the storage device 40. In other words, the switching control unit 23 determines whether multiple video switching commands have been recognized during the predetermined period. If the switching control unit 23 determines that no other video switching commands have been recognized during the conflict check period (i.e., only one video switching command has been recognized during the predetermined period), the switching control unit 23 determines that there is no video switching command that conflicts with the video switching command newly recognized by the recognition unit 22, and controls the operation of the switching device 3 in accordance with the newly recognized video switching command. As a result, the display on the display device 5 is switched, and the video corresponding to the video switching command is displayed on the display device 5.

[0032] On the other hand, if it is determined that another video switching command has been recognized during the conflict check period, the switching control unit 23 determines whether or not there is a conflict between the other video switching command (hereinafter also referred to as the previous command) and the newly recognized video switching command (hereinafter also referred to as the current command). To determine whether or not there is a conflict, for example, a conflict determination criterion that is predetermined and stored in the storage device 40 is used. The conflict determination criterion is a criterion for determining whether or not there is a conflict between the previous command and the current command.

[0033] A specific example of the conflict determination criteria is that, when the display device 5 is configured as a single display device, it is determined that the previous command and the current command are in conflict when the following conditions 1 and 2 are met. For example, condition 1 is a condition that the microphone identification information associated with the audio signals that recognized the previous command and the current command is different. The fact that the microphone identification information is different indicates that the person who issued the previous command and the person who issued the current command are different. Condition 2 is a condition that the video (video source 9) specified to be displayed by the previous command is different from the video (video source 9) specified to be displayed by the current command.

[0034] Furthermore, a specific example of a conflict determination criterion when the display device 5 is a multi-display configured with a plurality of display devices is a criterion for determining that a conflict exists between a previous command and a current command when the following condition 3 is also satisfied in addition to the above-mentioned conditions 1 and 2. Condition 3 is, for example, a condition that the screen (display device) to which the display is switched designated by the previous command is the same as the screen (display device) to which the display is switched designated by the current command.

[0035] If it is determined using the above-described conflict determination criteria that the current command does not conflict with the previous command, the switching control unit 23 controls the operation of the switching device 3 in accordance with the current command. This causes the display on the display device 5 to switch, and the video corresponding to the current command is displayed on the display device 5. Note that multiple video switching commands may be recognized during the conflict check period. In other words, there may be multiple previous commands. In this case, it is determined whether the current command conflicts with each of the multiple previous commands.

[0036] Furthermore, if it is determined that the current command conflicts with the previous command, the switching control unit 23 determines which command among the conflicting commands is to be prioritized in accordance with a predetermined priority rule. The priority rule is a rule that determines which command is to be prioritized among the conflicting commands. A specific example of this rule is a rule that uses job ranks in the organization that uses the video switching control system 1, such that the command of the person with the highest job rank among the people who issued the conflicting commands is given priority (adopted). When such a rule is used, the storage device 40 pre-stores microphone-job rank relationship data that associates microphone identification information with job ranks. That is, as described above, in the first embodiment, in the display room, seats are determined according to job ranks in, for example, a police or fire department organization. That is, a correspondence relationship between each seat and job rank is established. Furthermore, since a sound collection device 4 is installed corresponding to each seat, the sound collection device 4 is associated with the job rank. The microphone-job rank relationship data is stored in the storage device 40 as data representing the relationship between the sound collection device 4 and the job rank.

[0037] The switching control unit 23 determines a command to be prioritized from among the conflicting commands, for example, using a priority determination rule and microphone-position relationship data, and controls the operation of the switching device 3 according to the determined command. As a result, the display on the display device 5 is switched, and the video according to the prioritized video switching command is displayed on the display device 5.

[0038] The video switching control device 2 of the first embodiment and the video switching control system 1 including the video switching control device 2 are configured as described above. Next, an example of the operation relating to video switching in the video switching control device 2 will be described with reference to Fig. 5. Fig. 5 shows a flowchart explaining an example of the operation relating to video switching in the video switching control device 2. It can also be said that Fig. 5 shows a video switching method by the video switching control device 2.

[0039] For example, in a display room, a display device 5 displays an image supplied from a video source 9 via a switching device 3, and multiple users 8 are watching the image on the display device 5 while sitting at seats according to their respective positions. In this situation, one of the users 8 issues a command to switch the image by voice. This voice is converted into an audio signal by the sound collection device 4 and output from the sound collection device 4 to the image switching control device 2. The receiving unit 21 in the image switching control device 2 receives the audio signal output from the sound collection device 4 (step 101 in FIG. 5). Thereafter, the recognition unit 22 recognizes the image switching command from the received audio signal using voice recognition technology (step 102).

[0040] Then, triggered by the recognition unit 22 recognizing a new video switching command, the switching control unit 23 executes the following process. That is, the switching control unit 23 determines (checks) whether another video switching command (previous command) has been recognized (whether there is a previous command) during a predetermined period (conflict check period) going back from the recognition of the video switching command (current command) by referring to the command history data in the storage device 40 (step 103). If it is determined that there is a previous command, the switching control unit 23 further determines whether the current command conflicts with the previous command using the conflict determination criterion (step 104). If it is determined that the current command conflicts with the previous command, the switching control unit 23 further determines the command with priority from among the conflicting commands as the adopted command using the priority determination rule (step 105). Then, the switching control unit 23 controls the operation of the switching device 3 so that the video corresponding to the adopted command is displayed on the display device 5 (step 106).

[0041] Furthermore, if it is determined through the judgment operation of step 103 mentioned above that there is no previous command, the switching control unit 23 sets the current command as the adopted command, and in step 106 controls the operation of the switching device 3 so that the image corresponding to the adopted command (current command) is displayed on the display device 5.

[0042] Furthermore, if it is determined through the judgment operation of step 104 mentioned above that the current command does not conflict with the previous command, the switching control unit 23 sets the current command as the adopted command, and in step 106 controls the operation of the switching device 3 so that the image corresponding to the adopted command (current command) is displayed on the display device 5.

[0043] By the above-described operations related to video switching in the video switching control device 2, the switching device 3 is controlled so that the video corresponding to the video switching command is switched and displayed on the display device 5.

[0044] The video switching control device 2 and video switching control system 1 of the first embodiment have the above-described configuration, and therefore can achieve the following effects. That is, the video switching control device 2 of the first embodiment has a configuration that recognizes a video switching command issued by voice and controls the switching device 3 so that an image corresponding to the video switching command is displayed on the display device 5. As a result, the video switching control device 2 and video switching control system 1 can shorten the time from when a video switching command is issued to when the display on the display device 5 is switched, compared to when an operator operates the switching device 3 in response to the video switching command. Furthermore, because the operator is no longer required to operate the switching device 3, the video switching control device 2 and video switching control system 1 can achieve the effect of improving usability.

[0045] <Other embodiments> The video switching control device and video switching control system according to the present disclosure are not limited to the first embodiment and may be implemented in various ways. For example, the video switching control device 2 of the first embodiment recognizes a video switching command from an audio signal and controls the switching device 3 in accordance with the video switching command. In addition, the switching control unit 23 of the video switching control device 2 may be configured to receive operation information including a video switching command issued by an operator and output from an input device 50 that inputs information such as that indicated by the dotted line in FIG. 2, and control the operation of the switching device 3 in accordance with the video switching command in the operation information. In this case, assuming that the audio video switching command and the operator video switching command conflict with each other, the switching control unit 23 may further be configured to control the operation of the switching device 3 in accordance with a command determined according to a predetermined priority rule in the event of such conflict.

[0046] Furthermore, the video switching control device 2 may be configured with multiple computers 60, 70, as shown in Fig. 6. The computers 60, 70 each include an arithmetic unit 61, 71 and a storage device 62, 72, and the processors constituting the arithmetic units 61, 71 execute computer programs (programs) 63, 73 stored in the storage devices 62, 72, thereby providing functions corresponding to the programs. In the example of Fig. 6, the computer 60 includes a receiving unit 65 and a recognition unit 64 as functional units, and the computer 70 includes a switching control unit 75 as functional units. The receiving unit 65, the recognition unit 64, and the switching control unit 75 each have configurations similar to the receiving unit 21, the recognition unit 22, and the switching control unit 23 described in the first embodiment, respectively.

[0047] Furthermore, a video switching control device according to another embodiment of the present disclosure has a configuration as shown in FIG. 7 . That is, a video switching control device 90 according to another embodiment includes a receiving unit 91, a recognition unit 92, and a switching control unit 93. The receiving unit 91 receives audio signals output from a plurality of sound collection devices that convert audio into audio signals and output the audio signals. The recognition unit 92 uses voice recognition technology to recognize, from the received audio signals, a command requesting switching of the video displayed on the target display device as a video switching command. The switching control unit 93 executes a process to switch the video displayed on the target display device in accordance with the recognized video switching command. Furthermore, when multiple video switching commands are recognized within a predetermined time, the switching control unit 93 determines a video switching command to be adopted from the video switching commands according to a predetermined procedure, and executes a switching process to switch the video in accordance with the determined video switching command.

[0048] Such a video switching control device 90 constitutes a video switching control system together with a plurality of sound collection devices 95. The sound collection devices 95 are devices that take in audio including a video switching command requesting video switching, convert the audio into an audio signal, and output the audio.

[0049] Next, an example of the operation of the video switching control device 90 will be described with reference to Fig. 8. Fig. 8 shows a flowchart explaining an example of the operation of the video switching control device 90. It can also be said that Fig. 8 shows a video switching method.

[0050] For example, the receiving unit 91 of the video switching control device 90 receives audio signals output from each of the multiple sound collection devices 95 (step 201 in FIG. 8). Then, the recognizing unit 92 uses a voice recognition technology to recognize from the received audio signals a command requesting switching of the video displayed on the display device to be viewed as a video switching command (step 202).

[0051] Thereafter, the switching control unit 93 executes a process of switching the video displayed on the display device to be viewed in accordance with the recognized video switching command (step 203). At this time, if multiple video switching commands are recognized within a predetermined time, the switching control unit 93 determines a video switching command to be adopted from those video switching commands in accordance with a predetermined procedure, and executes a switching process of switching the video displayed on the display device to be viewed in accordance with the determined video switching command.

[0052] The video switching control device 90 having such a configuration makes it possible to switch the video on the display device by voice, thereby improving the usability of the system related to switching of the video displayed on the display device.

[0053] A part or all of the above-described embodiments can be described as, but not limited to, the following supplementary notes.

[0054] [Appendix 1] a receiving unit that receives audio signals output from a plurality of sound collection devices that convert audio into audio signals and output the audio signals; a recognition unit that uses a voice recognition technology to recognize, from the received audio signal, a command requesting switching of the video displayed on the display device to be viewed as a video switching command; a switching control unit that executes a process of switching the video displayed on the display device to be viewed in response to the recognized video switching command; Equipped with When a plurality of video switching commands are recognized within a predetermined time, the switching control unit determines a video switching command to be adopted from the video switching commands according to a predetermined procedure, and executes a switching process to switch the video in accordance with the determined video switching command. Video switching control device. [Appendix 2] When a plurality of video switching commands are recognized within a predetermined time, the switching control unit determines whether or not the video switching commands conflict with each other using a predetermined conflict determination criterion, and if they do not conflict, determines each of the video switching commands as an adopted command, which is a video switching command to be adopted, and if they conflict, determines the video switching command to be adopted according to a procedure in which a prioritized video switching command determined using a predetermined priority determination rule is determined as the adopted command from among the conflicting video switching commands. 2. A video switching control device according to claim 1. [Appendix 3] the display device to be viewed is connected via a switching device that switches and controls connections between the display device and a plurality of video sources; The switching process executed by the switching control unit is a process of controlling the switching device to connect a video source that outputs a video in response to a video switching command to the display device to be viewed. 2. A video switching control device according to claim 1. [Appendix 4] The display device to be viewed is a multi-display device configured by a plurality of display devices, and the video switching command includes information specifying a display device that switches the video from among the plurality of display devices that configure the multi-display device. 2. A video switching control device according to claim 1. [Appendix 5] The switching control unit further includes a configuration for receiving operation information including a video switching command by an operator output from an input device that inputs information to the video switching control device by an operator's operation, and for controlling the operation of the switching device in accordance with the video switching command of the operation information. 2. A video switching control device according to claim 1. [Appendix 6] Each of the plurality of sound collection devices is associated with a position representing a position in the workplace; The priority rule is a rule that uses a position associated with the sound collection device that outputs the audio signal including the video switching command. 3. A video switching control device according to claim 2. [Appendix 7] The priority decision rule is a rule that prioritizes a video switching command recognized from an audio signal by a sound collection device associated with the highest position among competing video switching commands. 7. A video switching control device according to claim 6. [Appendix 8] a video switching control device according to Supplementary Note 1; a plurality of sound collection devices that capture audio including a video switching command requesting video switching, convert the audio into audio signals, and output the audio signals; A video switching control system comprising: [Appendix 9] By computer, receiving audio signals output from a plurality of sound collection devices that convert audio into audio signals and output the audio signals; Using a voice recognition technology, a command to switch the video displayed on the display device to be viewed is recognized from the received audio signal as a video switching command; If a single video switching command is recognized within a predetermined time, a switching process is executed to switch the video displayed on the display device to be viewed in accordance with the recognized video switching command; When a plurality of video switching commands are recognized within the predetermined time, a video switching command to be adopted is determined from among the video switching commands according to a predetermined procedure, and a switching process is executed to switch the video displayed on the display device to be viewed in accordance with the determined video switching command. Video switching control method. [Appendix 10] A process of receiving audio signals output from a plurality of sound collection devices that convert audio into audio signals and output the converted audio signals; A process of recognizing, from the received audio signal, a command requesting switching of the video displayed on the display device to be viewed as a video switching command using a voice recognition technology; If a single video switching command is recognized within a predetermined time, a switching process is executed to switch the video displayed on the display device to be viewed in accordance with the recognized video switching command. a process of determining, in a case where a plurality of video switching commands are recognized within the predetermined time period, a video switching command to be adopted from among the video switching commands in accordance with a predetermined procedure, and executing a switching process to switch the video displayed on the display device to be viewed in accordance with the determined video switching command; A computer program that causes a computer to execute the following.

[0055] Note that part or all of the configurations described in Supplementary Notes 2 to 7 that are dependent on Supplementary Note 1 above may also be dependent on Supplementary Notes 8, 9, and 10 in the same dependent relationship as Supplementary Notes 2 to 7. Furthermore, not limited to Supplementary Notes 1, 8, 9, and 10, part or all of the configurations described as Supplements may be made dependent on various hardware, software, various recording means for recording software, or systems, within the scope of each of the above-mentioned embodiments.

[0056] Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above-described embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present disclosure within the scope of the present disclosure. Furthermore, each embodiment can be combined with other embodiments as appropriate. [Explanation of symbols]

[0057] 1 Video switching control system 2,90 Video switching control device 21,91 Receiver 22,92 recognition part 23,93 Switching control section

Claims

1. a receiving unit that receives audio signals output from a plurality of sound collection devices that convert audio into audio signals and output the audio signals; a recognition unit that uses a voice recognition technology to recognize, from the received audio signal, a command requesting switching of the video displayed on the display device to be viewed as a video switching command; a switching control unit that executes a process of switching the video displayed on the display device to be viewed in response to the recognized video switching command; Equipped with When a plurality of video switching commands are recognized within a predetermined time, the switching control unit determines a video switching command to be adopted from the video switching commands according to a predetermined procedure, and executes a switching process to switch the video in accordance with the determined video switching command. Video switching control device.

2. When a plurality of video switching commands are recognized within a predetermined time, the switching control unit determines whether or not the video switching commands conflict with each other using a predetermined conflict determination criterion, and if they do not conflict, determines each of the video switching commands as an adopted command, which is a video switching command to be adopted, and if they conflict, determines the video switching command to be adopted according to a procedure in which a prioritized video switching command determined using a predetermined priority determination rule is determined as the adopted command from among the conflicting video switching commands.

2. The video switching control device according to claim 1.

3. the display device to be viewed is connected via a switching device that switches and controls connections between the display device and a plurality of video sources; The switching process executed by the switching control unit is a process of controlling the switching device to connect a video source that outputs a video in response to a video switching command to the display device to be viewed.

2. The video switching control device according to claim 1.

4. The display device to be viewed is a multi-display device configured by a plurality of display devices, and the video switching command includes information specifying a display device that switches the video from among the plurality of display devices that configure the multi-display device.

2. The video switching control device according to claim 1.

5. The switching control unit further includes a configuration for receiving operation information including a video switching command by an operator output from an input device that inputs information to the video switching control device by an operator's operation, and for controlling the operation of the switching device in accordance with the video switching command of the operation information.

2. The video switching control device according to claim 1.

6. Each of the plurality of sound collection devices is associated with a position representing a position in the workplace; The priority rule is a rule that uses a position associated with the sound collection device that outputs the audio signal including the video switching command.

3. The video switching control device according to claim 2.

7. The priority decision rule is a rule that prioritizes a video switching command recognized from an audio signal by a sound collection device associated with the highest position among competing video switching commands.

7. The video switching control device according to claim 6.

8. The video switching control device according to claim 1; a plurality of sound collection devices that capture audio including a video switching command requesting video switching, convert the audio into audio signals, and output the audio signals; A video switching control system comprising:

9. By computer, receiving audio signals output from a plurality of sound collection devices that convert audio into audio signals and output the audio signals; Using a voice recognition technology, a command to switch the video displayed on the display device to be viewed is recognized from the received audio signal as a video switching command; If a single video switching command is recognized within a predetermined time, a switching process is executed to switch the video displayed on the display device to be viewed in accordance with the recognized video switching command; When a plurality of video switching commands are recognized within the predetermined time, a video switching command to be adopted is determined from among the video switching commands according to a predetermined procedure, and a switching process is executed to switch the video displayed on the display device to be viewed in accordance with the determined video switching command. Video switching control method.

10. A process of receiving audio signals output from a plurality of sound collection devices that convert audio into audio signals and output the converted audio signals; A process of recognizing, from the received audio signal, a command requesting switching of the video displayed on the display device to be viewed as a video switching command using a voice recognition technology; If a single video switching command is recognized within a predetermined time, a switching process is executed to switch the video displayed on the display device to be viewed in accordance with the recognized video switching command. a process of determining, in a case where a plurality of video switching commands are recognized within the predetermined time period, a video switching command to be adopted from among the video switching commands in accordance with a predetermined procedure, and executing a switching process to switch the video displayed on the display device to be viewed in accordance with the determined video switching command; A computer program that causes a computer to execute the following.

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