Tactile stimulus generating device and tactile stimulus generating method

Abstract

The system appropriately controls the tactile stimuli presented in the spatial domain according to the user's usage patterns. [Solution] The tactile stimulus generation device comprises an input unit that receives input information used to generate tactile stimuli, a control unit that determines generation conditions and stimulus characteristics for a spatial area based on the input information, and a tactile stimulus output unit that outputs tactile stimuli based on the determined conditions to the spatial area via a medium (propagation medium). The control unit updates the stimulus characteristics according to the passage of time, changes in input information, usage history information, and usage restriction policy information, and continues or terminates the output based on the determination of the continuation conditions. If necessary, the acquisition unit can acquire area information or state information (including biological information) and reflect it in the input information, and tactile presentation information supplied from an external device or external program can also be used to determine the generation conditions.

Description

Technical Field

[0001] The present invention relates to a tactile stimulus generation device, a tactile stimulus generation method, and a program that generate a tactile stimulus for a spatial region (hereinafter referred to as "spatial region") set as a user's perception target region, and particularly to updating the stimulus characteristics of the tactile stimulus according to acquired information, input information, usage history information, usage restriction policy information, etc., so as to assist the user's voluntary use interruption or approach suppression without relying on forced locking or physical barriers, etc.

[0002] Conventionally, information devices such as game machines, smartphones, and head-mounted displays have technologies for presenting tactile stimuli using vibrators, ultrasonic vibrators, etc. Also, non-contact tactile presentation technologies that use airborne ultrasonic waves to give local tactile stimuli to the palm or fingertips have been proposed. Furthermore, tactile presentation technologies that generate a mechanical action in the space around the user's body through a medium have been proposed.

[0003] On the other hand, in order to suppress the excessive use of electronic devices, functions such as reducing the screen brightness after continuous use for a predetermined time and functions for attracting attention through pop-up displays, etc. are adopted. Also, there are functions for attracting the user's attention by outputting a notification sound or simple vibration according to the passage of time. However, these functions do not necessarily control the tactile stimuli presented within the space region in a stepwise manner in conjunction with the definition of the space region where the user's line of sight or attention is directed.

[0004] Furthermore, in order to prevent excessive approach to exhibits in art galleries, exhibition halls, etc., physical or visual barriers such as rope fences and standing signs are used. Also, around facilities such as high-voltage equipment, protective fences, safety signs, warning lights and warning sounds are used to prevent general users or non-responsible persons from getting too close to dangerous equipment. In addition, operations of setting restricted access areas and restricting entry are also carried out.

[0005] However, conventional technologies that rely on altering visual displays, forced locks, or physical barriers can abruptly disrupt user immersion and create a sense of coercion, potentially leading to resentment and stress. Furthermore, warning signs and sounds may be overlooked if users are not paying attention to them. Additionally, in museums and around facilities, rope barriers and signs alone may not adequately deter users who are not paying attention.

[0006] Furthermore, a mechanism that gently presents the user with opportunities to reflect on and decide for themselves whether to "continue" or "get any closer" by providing tactile stimuli from multiple directions (front, back, left, right, and possibly up, down, or diagonally) surrounding the user has not been sufficiently implemented. In particular, a mechanism that controls tactile stimuli associated with a spatial domain in multiple stages according to usage history information and usage restriction policy information, and changes the manner in which such tactile stimuli are presented over time, has not been sufficiently developed.

[0007] In view of the above circumstances, the object of the present invention is to provide tactile stimulation to the spatial area itself that is set as the user's perceptual target area, such as the space around the display surface of a smartphone or the like, the area around the mirror surface of a mirror or mirror-type display device (including the space in front of the mirror surface), the display area in a virtual environment including a three-dimensional game or AR / MR / VR, the area around exhibits in a museum or the like, the space around equipment, the periphery of an intrusion-restricted area, and to change the stimulation characteristics of said tactile stimulation in multiple stages based on acquired information and input information. (1) Prolonged use of electronic devices and other continuous use over time, (2) Spatial proximity behavior such as excessive approach to exhibits, equipment, etc. The objective is to provide a tactile stimulus generating device that allows the user to autonomously decide to refrain from continuing the action or getting closer to the target, without relying on changes to visual displays, forced locking, or physical barriers.

[0008] More specifically, the object of the present invention is, (a) In addition to information regarding the spatial domain, information representing the user's posture, gaze, hand position, body position or movement, physiological state (which may include body temperature, pulse wave, brain wave, etc.), and the state of the surrounding environment is acquired, and the position and range (including expansion, contraction, and deformation) of the spatial domain is set or updated accordingly. (b) The conditions for generating tactile stimuli and the characteristics of the stimuli are controlled stepwise based on acquired information and input information, including device usage history information (continuous usage time, cumulative usage time, number of operations, etc.) and usage restriction policy information. (c) To enable users to autonomously make decisions to interrupt or pause use in the case of continuous use over time, and to make decisions to suppress approach behavior in the case of spatial approach behavior, by altering the sensory experience of the spatial area using tactile stimuli from one or more directions. The objective is to provide a tactile stimulation generating device that can achieve this.

[0009] Furthermore, the object of the present invention is to provide a tactile stimulus generating device that can handle the management of electronic device usage time and access control around exhibits, equipment, or restricted access areas within a common framework, while taking into account usage policies in families, schools, workplaces, etc., without compromising the user's autonomy. This is achieved by combining tactile stimuli that change in stages according to usage history information, etc., and whose stage configuration or stimulus characteristics can be adjusted within a predetermined tolerance range set by the user or administrator as needed, with a termination notification tactile pattern output when predetermined conditions are met, and by integrating this with usage restriction policy information that can be supplied from an external device or management system.

[0010] In this specification, "spatial area" refers to an area set as the area to which a user directs their gaze, attention, or operation at a given time, and is a concept that includes the user's perceptual object area corresponding to that area. In the drawings, an example of a spatial area is indicated by reference numeral 50. A spatial area may be set, for example, to encourage autonomous use restraint by the user. In this case, the spatial area may be set as the hand-operation space formed in front of the display surface of a smartphone or the like, the display area presented within the field of view in a three-dimensional game or virtual reality (VR) environment, the area around the mirror surface of a mirror or mirror-type display device (including the space in front of the mirror surface), or the area around a desk or bedding. In this case, the setting of the spatial area may be based on user input information, area information acquired by an acquisition unit, or use restriction policy information. It may be set at any time, including before use, during use, or after use, and is not limited to whether the target device or object is in operation or not. Furthermore, spatial areas may be set for the purpose of deterring undesirable contact or intrusion. In this case, the setting of spatial areas is not limited to user input information, but may also be based on input information set by the administrator, area information provided by an external system, or area information acquired by an acquisition unit. Tactile stimuli may be used as a warning or avoidance guidance to deter contact or intrusion into the spatial area. In this case, spatial areas may be set as the area around an object where contact should be deterred from the standpoint of protecting the object (the area around exhibits in a museum, etc.), or as an area where contact or intrusion should be deterred for hygienic or safety reasons (e.g., the area around food or infants, a hazardous area). Here, a hazardous area may include, for example, an area where the appearance of wild animals is expected, the area around equipment or construction sites, or the area around irrigation canals.

[0011] To solve the above problems, a tactile stimulus generating device according to one aspect of the present invention comprises: an input unit that receives input information input to the tactile stimulus generating device; a control unit that determines the conditions for generating the tactile stimulus for the spatial region based on the input information; and a tactile stimulus output unit that outputs the tactile stimulus to the spatial region based on the conditions for generating the tactile stimulus determined by the control unit. The tactile stimulus generating device may further comprise an acquisition unit that acquires region information for identifying or setting the spatial region and supplies it to the input unit, and the input unit can update at least a portion of the input information using the region information supplied from the acquisition unit.

[0012] The control unit may include an input analysis unit that analyzes at least a portion of the input information, which may include region information supplied from the acquisition unit. The control unit may also include a state estimation and condition determination unit that determines the conditions for generating tactile stimuli based on the analysis results from the input analysis unit and at least a portion of the input information.

[0013] The control unit may further include a stimulus characteristic determination unit that determines the stimulus characteristics of the tactile stimulus based on the generation conditions. The stimulus characteristics include the intensity, frequency, pulse width, spatial distribution of the generation location (including one or more desired locations P1 to Pn within a spatial area, and linear, planar, or volumetric distribution), temporal change pattern, presentation interval, etc. Here, the desired position P (or P1 to Pn if there are multiple positions) represents a position in the spatial domain (or its vicinity) where a tactile stimulus is presented. This position is not limited to being set as a local stimulus presentation point, but can be set as one or more regions (including the region near the focal point) for constituting a point-like, linear, planar, or volumetric tactile sensation. Furthermore, the multiple desired locations P1 to Pn are not limited to being assigned the same stimulus characteristics, but may include being assigned different stimulus characteristics to each other. Moreover, these stimuli are not limited to being presented simultaneously, but may include being presented in a time-coordinated manner (including sequential presentation, superimposed presentation, or time-varying presentation ratios). As a result, the user may perceive the stimuli from multiple points as an integrated, unified tactile sensation (one or a few tactile impressions) such as planar, fluid, or enveloping. Furthermore, the stimulus characteristics may be set to correspond to the tactile texture perceived by the user. For example, • Patterns that cause slight discomfort (e.g., a tingling or prickling sensation, or a sensation similar to mild itchiness) due to minute vibrations or localized pressure changes on the skin surface. • Patterns that produce a sensation of external presence (for example, the feeling of "sweat or tears flowing" or "something lightly touching and passing by") through continuous or intermittent point stimulation of a part of the skin. • A pattern that generates an attention-grabbing sensation (for example, a feeling of being lightly tapped on the shoulder) by applying point stimulation to a specific area (e.g., the shoulder) at regular intervals or a predetermined rhythm. - Patterns that create a feeling of being enveloped or pushed back (for example, the feeling of being gently held from behind, or the feeling of being pushed back from the front) by applying continuous pressure or pulling to the area around the body or to specific parts of the body, or patterns that create a feeling of being pulled towards the screen (for example, the feeling of being sucked into the screen), • Patterns that produce sensations similar to hot or cold (for example, a feeling of "gradual warmth" or "coolness") by controlling the intensity or temporal changes of tactile stimuli without actual temperature changes. This may include, for example. The stimulus characteristic determination unit can select one or more patterns from the multiple types of tactile patterns based on setting information previously selected or customized by the user or administrator, according to usage history information and usage restriction policy information. Furthermore, the stimulus characteristic determination unit may be configured to gradually switch to tactile patterns corresponding to stages such as the comfort stage, the attention stage, and the termination notification stage, depending on the passage of time or changes in acquired information. These tactile stimuli are not intended to cause strong pain or excessive aversion, but are preferably used as a sense of discomfort to draw attention, to indicate boundaries, or to encourage autonomous discontinuation of use or approach inhibition.

[0014] The control unit may be configured to determine a continuation condition while the tactile stimulus is being output, and if the continuation condition is met, to repeat the process of determining the generation condition, outputting the tactile stimulus based on the generation condition toward the spatial region, or both. The control unit may also be configured to update at least a part of the stimulus characteristics of the tactile stimulus in response to the passage of time, changes in at least a part of the input information, or both.

[0015] The present invention can be realized not only as a tactile stimulus generating device, but also as a tactile stimulus generating method, as a processing procedure executed by each part of the device. Specifically, it includes a process of receiving input information, determining the conditions for generating tactile stimuli for a spatial region based on the input information, and outputting tactile stimuli to the spatial region based on the determined generation conditions.

[0016] In addition to the embodiment realized as the tactile stimulus generating device described above (for example, the configuration according to claim 1), the present invention also includes embodiments in which the control procedure executed by the device is understood as a "tactile stimulus generating method," and embodiments in which the control procedure is understood as a "program" for causing a computer to execute it. That is, claim 10 corresponds to an embodiment in which the processing that the tactile stimulus generating device according to claim 1 can execute is specified as a method, and claim 11 corresponds to an embodiment in which the method is specified as a program for causing an information processing device to execute it.

[0017] Preferably, the tactile stimulation output unit is configured such that the tactile stimulation is formed within the spatial region via a propagation medium interposed between the spatial region and the tactile stimulation output unit, and the user can perceive it as touch in the spatial region. The propagation medium may be any of air, liquid, gel, solid material, etc. For example, a configuration in which a plurality of ultrasonic transducers are arranged in an array to form local pressure fluctuations at a desired position in the air (including a haptics method using airborne ultrasound), a configuration in which a vibrating body inside the housing is driven to transmit vibrations to the fingers via the surface of the housing, a configuration in which force is applied to the skin surface by an airflow or liquid flow from a nozzle, a configuration in which the coefficient of friction with the skin is changed by electrostatic force, or a configuration in which pressure waves or deformation are transmitted via liquid or gel. Furthermore, the tactile stimulation output unit 40 may include a configuration that provides an electrical tactile sensation by applying an electric current or electric field from electrodes attached to the skin or clothing, or from electrodes provided on a display surface or housing, etc. The tactile stimulation output unit 40 may also include a configuration that provides tactile stimulation as a temperature change using a temperature stimulation generation means (e.g., a Peltier element, a far-infrared heater, a microwave heating mechanism, a cold air generation mechanism, or a hot air generation mechanism). Each of these methods may be used individually, or they may be combined with ultrasonic air haptics, mechanical vibration, airflow, or liquid flow to generate a complex tactile stimulation by superimposing multiple types of tactile presentation methods.

[0018] In this specification, "acquired information" is a general term for information acquired by an acquisition unit (e.g., acquisition unit 10) regarding the state of a spatial area (e.g., reference numeral 50 in the drawings) and its surroundings. The acquired information may include area information for identifying or setting the spatial area, information representing the user's involvement in the spatial area such as position, posture, gaze, hand position, and range of motion, information representing the user's stay within the spatial area, environmental information such as ambient light, temperature, humidity, and noise level, and information indicating the output state of a tactile stimulation output unit (e.g., tactile stimulation output unit 40). Area information is information for identifying or defining the position or range of a spatial area, and may include at least one of coordinate values, coordinate systems, boundary shapes, reference points, distances, or angles. The acquisition unit may include a configuration that uses at least one of optical, electrical, acoustic, or mechanical means to obtain the acquired information, for example, a camera or distance image sensor, a capacitive sensor or electrode, a microphone or ultrasonic receiving element, an acceleration sensor, a gyroscope, a pressure sensor, etc. All or part of the acquired information obtained by the acquisition unit may be supplied to the input unit and used as at least part of the input information received by the input unit. For example, the input unit may correct or update at least part of the parameters relating to the target position, target range, focal position, or output directionality of a tactile stimulus based on the area information. The acquisition unit 10 is an optional component, and in configurations without the acquisition unit 10, input information including area information may be supplied to the input unit 20 by user operation or from an external device or management system.

[0019] In one embodiment of the present invention, the tactile stimulus generating device may optionally include a state information acquisition unit that acquires state information representing the user's biological state. The state information acquisition unit may be configured to supply the acquired state information to a control unit, may be built into the tactile stimulus generating device, or may be configured as a separate device and supply the state information via wired or wireless communication. The state information may include, but is not limited to, physiological indicators such as heart rate, pulse wave, skin electrical response, blood pressure, respiratory rhythm, and body movement; indicators based on electroencephalography (EEG) or near-infrared spectroscopy (fNIRS); indicators related to skin condition such as skin surface temperature or humidity and degree of sweating; acoustic information such as speech sounds, breathing sounds or nasal breath; and chemical information such as body odor or exhaled breath components. This state information may be acquired by either a wearable sensor or a non-contact sensor. The status information acquisition unit may be included in the acquisition unit 10, or it may be included in the input unit 20.

[0020] The control unit may be configured to change the continuation condition, update at least a part of the stimulation characteristics of the tactile stimulus, or perform both based on the state information. For example, even within the range of the allowable usage time defined in the usage restriction policy information, when the state information indicates fatigue, over-concentration, etc., a mode may be adopted in which the stimulation characteristics are updated to prompt rest or termination. Also, since the state information can vary due to individual differences, noise, defects, wearing state, etc., the control unit may evaluate the reliability or stability of the state information and use it after performing at least one of smoothing, outlier removal, estimation and complementation, or consistency determination of multiple indicators. Furthermore, from the perspective of suppressing misguidance, the control unit may refer to at least one of the usage history information or the usage restriction policy information in addition to the state information, and adjust the content of the change of the continuation condition or the update of the stimulation characteristics (update range, update speed, step transition condition, etc.).

[0021] In this specification, "input information" is a general term for information based on the user's operation input, communication from an external device or a management system, or a pre-set profile, etc. For example, it may include set values from a user interface (touch panel, slider, physical button, voice input, etc.), policy information transmitted from an external server, control signals transferred by inter-terminal communication, etc. The input information may include the usage history information of the tactile stimulus generation device. In this specification, the usage history information may include the continuous usage time, cumulative usage time, number of operations, operation frequency, usage tendency of a specific application or specific content, usage pattern information such as the approach distance and stay time in a spatial area, etc. of the tactile stimulus generation device. In this specification, a value (continuous usage time, cumulative usage time, stay time, distance, operation frequency, etc.) representing the usage state or the involvement state with respect to the spatial area is referred to as a history parameter. The history parameter may be included in the usage history information alone or as a combination of multiple ones. The usage history information is sequentially accumulated in the storage unit 35 in the device and may be taken in as input information by the input unit. The stimulation characteristic determination unit can update or change at least a part of the stimulation characteristics of the tactile stimulation (for example, intensity, frequency, presentation interval, or spatial distribution within a spatial region, etc.) stepwise or continuously (including in a ramp-like or slope-like manner) according to the usage history information. Such update or change may include a gradual change in the content of the tactile pattern, switching of the tactile pattern, and superposition of a plurality of tactile stimulations.

[0022] In applications (games, learning, notifications, AR / MR / VR, etc.) executed on an external device, a large number of tactile presentations may occur according to events or scenes. However, the deeper the user's immersion, the more the intention of pause notifications and usage restrictions may be buried in the tactile presentations, and it may be difficult to obtain a suppression effect. Therefore, in one aspect of the present invention, the input information may include tactile presentation information generated by an application executed on an external device. The external device may be any of a smartphone, a portable game machine, a PC, or a headset, etc., and the program is not limited to the above applications.

[0023] The tactile presentation information is information generated according to the execution of an application or an event, and may include at least one of the presentation timing, presentation position, intensity, frequency, duration, and pattern identifier of the tactile stimulation. Further, it may include at least one of event types such as being hit, success, warning, boundary contact, remaining time, etc., urgency, scene ID, difficulty level, or application state.

[0024] The control unit may use the tactile presentation information to determine the generation conditions of the tactile stimulation. For example, it may be configured to determine the generation conditions, update at least a part of the stimulation characteristics, or perform both according to the event type or urgency included in the tactile presentation information. The generation conditions may include presentation timing, presentation position, presentation range, or spatial distribution of the stimulation.

[0025] Furthermore, the control unit may be configured to convert tactile presentation information, superimpose tactile stimuli of the present invention based on tactile presentation information, or output control signals to external devices to weaken or intermittently reduce the tactile presentation of the application, so that the tactile presentation presented by the application and the tactile stimuli according to the present invention can influence each other. For example, if the tactile presentation originating from the application is biased towards increasing immersion (e.g., strong continuous vibration), and the system determines that the user has become too immersed based on usage history information, usage restriction policy information, or status information, the system may reduce the intensity of the tactile presentation originating from the application and transition to a tactile pattern that encourages a pause.

[0026] Tactile presentation information generated by an external device or program may involve events occurring frequently, multiple types of events overlapping in a short period, or patterns frequently switching due to scene transitions, etc. If this information is used directly to determine generation conditions, the tactile stimuli may become overcrowded, reducing their discriminability and potentially causing excessive burden or confusion for the user. Therefore, the control unit may be configured to transform the tactile presentation information by at least one of the following methods: normalization, decimation, integration, prioritization, or aggregation within a time window, before using it to determine generation conditions.

[0027] For example, in a three-dimensional game or AR / MR / VR environment, if many events such as being hit, contact, success, and warnings occur in a short period of time, haptic presentations originating from the application may become continuous. In such cases, the control unit may prioritize events related to pausing or suppressing use based on the event type, urgency, or presentation timing included in the haptic presentation information, and update at least a part of the generation conditions or stimulus characteristics to convert them into haptic presentations that are in line with the purpose while maintaining identifiability.

[0028] Furthermore, haptic feedback information is not limited to being supplied from a single external device or a single program, but may be supplied from multiple external devices, multiple applications, or management systems. In this case, the control unit may be configured to determine the generation conditions using fallback rules or a cache, taking into account the priority, delay, loss, or inconsistency of each source.

[0029] In a more preferred embodiment, the stimulus characteristics may include a termination notification tactile pattern that is output when a predetermined condition is met. The termination notification tactile pattern may be set to have temporal or spatial changes that are distinguishable from other states of the stimulus characteristics, or it may have both temporal and spatial changes. This allows for clear tactile recognition that, in the case of using electronic devices, the user has reached the "let's stop now" stage, and in the case of exhibition spaces or around equipment, the user has reached the "it is better not to enter any further inside the spatial area" stage.

[0030] In this specification, an application includes software that runs on an external device or management system, and may be implemented as a game, a program that runs on a browser, or a service that runs in the background. Furthermore, the input information may include configuration information (such as settings, rules, or profiles related to usage policies) set by the user or administrator through the user interface, as well as usage restriction policy information that may be supplied from an external device or management system. In this specification, “Usage Restriction Policy Information” means information regarding the overall usage policy, which may include recommended usage times, rest intervals, target usage time, proximity distance, and timing for encouraging breaks, in addition to the conditions under which the use of the tactile stimulation generating device should be restricted. This usage restriction policy information may include information reflecting goals or rules set by the user through the user interface, policies agreed upon within family, school, workplace, group, or community, or information registered in external devices or management systems based on safety standards or recommended guidelines established for each facility or piece of equipment. Alternatively, a configuration may be adopted in which the user reviews and accepts the policy content presented by an external device or management system before applying it to the tactile stimulus generating device. The aforementioned usage restriction policy information specifies at least a part of the permissible usage time or usage conditions for the tactile stimulus generating device, where the usage conditions may include the permissible stay time within the spatial area and distance conditions from the outer edge of the spatial area. The loop control unit or the stimulus characteristic determination unit may be configured to change the continuation conditions, update at least a portion of the stimulus characteristics, or do both, based on the usage restriction policy information. In this specification, "changing the continuation conditions" includes resetting the conditions used to determine whether continuation is possible, and "updating the stimulus characteristics" includes resetting the stimulus characteristics of tactile stimuli. The loop control unit and the stimulus characteristic determination unit are both functional blocks that can be included in the control unit. Furthermore, the stimulus characteristic determination unit may be configured to refer to both the usage history information and the usage restriction policy information and to update at least a portion of the stimulus characteristics of the tactile stimulus in a stepwise manner. Such updates may include a stepwise or continuous change (including a ramp-like or slope-like change) of at least one stimulus intensity, frequency, presentation interval, or spatial distribution; a gradual change in the content of the tactile pattern; a switch in the tactile pattern; and the superposition of multiple tactile stimuli.

[0031] Furthermore, in one embodiment of the present invention, the stimulus characteristics may include a termination notification tactile pattern that is output when a predetermined condition is met, which is determined based on at least one of the usage history information or the usage restriction policy information. The predetermined condition may also be included in the continuation condition, which is determined during the output of the tactile stimulus. The termination notification tactile pattern may be configured to have temporal or spatial changes that are distinguishable from other states of the stimulus characteristics, or it may have both temporal and spatial changes (for example, changes in the rhythm, intensity, spatial distribution, duration, etc. of the stimulus). With such a termination notification tactile pattern, the user can intuitively grasp "the timing to end this use" or "the timing to not enter the spatial area any further" solely through touch, without having to look at visual notifications such as display screens or warning messages. Furthermore, by combining this with gradual tactile changes leading up to the termination notification tactile pattern, it is possible to encourage the user to make an autonomous decision such as "it's time to stop now" or "I should stop now" in a natural flow, without causing the user sudden stress or a feeling of rejection.

[0032] Furthermore, in a preferred embodiment of the present invention, the tactile stimulation output unit may include a plurality of tactile stimulation output elements arranged in front of, behind, to the left and right of the user's body (which may also include the up and down and diagonal directions), and at least a portion of the spatial area may be set as the space surrounding the user. In this case, in a three-dimensional game or VR environment, when a user remains at a specific point in the virtual space or remains immersed for a certain period of time, the combination of tactile stimuli from the front, back, left, and right can give the user a feeling of being enveloped and embraced. Furthermore, in the space surrounding museums and other facilities, if a user approaches an exhibit or facility too closely, distributing tactile stimuli from the outer edge of the spatial area inward can create a restraining sensation that suggests, "It's better not to go any further in."

[0033] According to the present invention, by generating tactile stimuli in a spatial area set as the user's perceptual target area and controlling the characteristics of these stimuli in multiple stages based on input information, it is possible to change the user's perception of the spatial area itself that they "actually see and touch" in areas such as the space in front of a smartphone screen, the space around the mirror surface (display surface) of a mirror-type display device, the field of view in a three-dimensional game or VR space, the space around exhibits in a museum, and the space around equipment such as precision instruments and high-voltage equipment. As a result, without relying on changes to visual displays, forced locks, or the installation of physical barriers, it is possible to gently convey usage conditions such as prolonged use of electronic devices or getting too close to exhibits and equipment through touch, providing an opportunity for the user to autonomously decide to refrain from continuing the behavior or getting even closer to the object.

[0034] Furthermore, by configuring the system to update at least a portion of the tactile stimulation characteristics in multiple stages according to usage history information, when using electronic devices, the system can start with a comfortable and weak pattern immediately after use begins, and gradually transition to a more alerting pattern and then to an end-of-use notification tactile pattern as the continuous usage time and number of operations increase. On the other hand, in exhibition spaces, areas surrounding equipment, or areas surrounding mirrored surfaces (display surfaces), by treating the time spent in the spatial area and the number of times proximity warnings are issued as usage history information, the spatial distribution and intensity of tactile stimuli within the spatial area can be changed the longer the user stays near the object, creating a sensory experience that naturally makes the user feel that "it's getting too close."

[0035] Furthermore, by setting the termination notification tactile pattern to have a temporal or spatial change that is distinguishable from other states, users can clearly recognize the timing of a "break" in each use through touch. The termination notification tactile pattern may have both temporal and spatial changes. For example, in the use of electronic devices, the termination stage can be tactilely indicated as the end of a single usage session, or in exhibition spaces, the area around equipment, or the space around a mirror or mirror-type display device's mirrored surface (display surface), as a boundary beyond which the user should not enter the spatial area. By repeatedly providing such "end or boundary signals," users can more easily perceive each session or approach as a unified experience, making it easier for them to make self-determined decisions such as "I'll stop here for now" or "I won't get any closer."

[0036] Furthermore, by configuring the system to change the continuation conditions, update at least a portion of the stimulus characteristics (including changes to said stimulus characteristics), or both, based on usage restriction policy information supplied from an external device or management system, and by configuring the system to update at least a portion of the stimulus characteristics in multiple stages (including changes to said stimulus characteristics) based on both usage history information and usage restriction policy information, it is possible to perform fine-grained haptic control according to the usage situation of each individual user, while respecting usage rules established within the home or organization, as well as safety standards for each facility and equipment. This makes it possible to create an autonomous support environment in which the user themselves can adjust the usage time or approach distance based on haptic feedback, rather than the management side unilaterally confiscating or forcibly locking the terminal, or relying solely on physical barriers.

[0037] Furthermore, the user's situation may not be adequately represented by sensor information from the device alone. For example, the application or content the user is running may contain contextual information that is difficult to grasp from the outside, such as progress, difficulty level, event occurrence, match status, completion of learning tasks, or timing when it cannot be interrupted for safety reasons. Ignoring such contextual information and uniformly increasing or ending tactile stimulation can unnaturally disrupt the user's behavior and reduce the guidance effect.

[0038] To address this challenge, the present invention allows for a configuration (corresponding to claim 12) that can accept haptic presentation information generated by an external program as input information. The external program may be, but is not limited to, a running application, an OS well-being function, a parental control application, a learning support application, a VR / AR application, or a content distribution platform. The external program may generate haptic presentation information such as an identifier for the haptic pattern to be presented, stage information, a recommended intensity range, a presentation time profile, or recommended conditions for presentation start and end.

[0039] For example, if a learning app detects a "chapter-end break (where a break is desirable)," an external program can generate haptic feedback information corresponding to that break and notify the device. The control unit can then update the stimulus characteristics by referring to this haptic feedback information, thereby realizing haptic guidance that makes it easier for the user to transition to a pause at natural points in their work. This makes it easier for the user to accept and encourages continuous self-adjustment compared to a method that simply terminates based on time alone.

[0040] Furthermore, if an external program can generate haptic feedback information indicating context such as "in battle," "danger avoidance required," or "moving," the control unit can relax or tighten the continuation conditions or switch the stimulus characteristics between attention-grabbing and calming depending on the context. This allows for the consistent incorporation of user state information and contextual information derived from external programs as input information, enabling situation-appropriate haptic feedback through the same inventive concept (updating stimulus characteristics and continuation conditions based on input information). Furthermore, by using state information that reflects the user's biological state as input information, in addition to the aforementioned contextual information, it becomes possible to more appropriately update the continuation conditions and stimulus characteristics according to the user's internal state.

[0041] Furthermore, the tactile stimulus generating device of the present invention is also useful for users who are prone to becoming immersed in a screen or virtual space and who may find it difficult to interrupt their use on their own. For example, sudden forced locks or warning displays can easily be perceived by some users as "external commands," which may increase anxiety or resistance. According to the present invention, the user can pre-select at least a part of the type or stage configuration of the tactile pattern via an input unit, and based on that setting, the tactile stimulation can be changed gradually or continuously from a comfortable stage to a warning stage and then to an end notification stage by referring to usage history information and usage restriction policy information. As a result, the user repeatedly experiences signals through their own sensations that "it's almost over," making it easier to form behavioral patterns in which they end their use of their own volition rather than being forced to.

[0042] For example, when a user is engrossed in games, watching videos, studying, or immersive experiences such as VR / AR, they may not be aware of the passage of time or their increasing fatigue. Relying solely on self-reporting or manual operation can make it difficult to appropriately reduce, increase, or end tactile stimuli. In particular, simply pausing the screen or uniformly locking the device presents challenges in terms of situational adjustment, such as provoking user resistance, increasing stress due to interruptions to work or learning, or excessively shutting down the experience in violation of safety considerations (e.g., situations requiring attention to the surroundings).

[0043] To address these challenges, the present invention allows the input information to include state information representing the user's biological state. Therefore, the control unit can change the continuation conditions based on the state information, update at least a part of the stimulation characteristics of the tactile stimulation, or do both. This enables control such as "gradually adjusting the tactile stimulation to encourage behavioral change" or "terminating it early as necessary," while reflecting changes in the user's state and without relying on the user's subjective report.

[0044] Examples of state information may include, but are not limited to, heart rate, heart rate variability, respiration, skin electrical activity, skin temperature, sweating, body movement, posture, eye movements / blinking, facial expressions, vocal characteristics, measured values ​​related to brain activity, or estimated values ​​such as fatigue, tension, and excitement calculated from these. In configurations that include a state information acquisition unit, such state information may be acquired from built-in sensors, peripheral devices, wearable devices, or external systems.

[0045] For example, if a user's excitement and tension increase due to prolonged immersion in content, the state information may detect increased heart rate, respiratory changes, etc. In this case, the control unit may change the continuation condition to "gradually weaken the output while the predetermined state continues" or "stricter termination conditions when the state exceeds a threshold." Furthermore, the stimulus characteristics may be updated as at least one of the following: stimulus intensity, frequency components, temporal variation, focal position, presentation pattern, presentation interval, etc., to adjust the user's attention-grabbing and pause guidance so that it is "less disruptive guidance" rather than "excessive interruption."

[0046] Furthermore, since responses may differ depending on the day and time of day even for the same user, the control unit may dynamically switch the continuation conditions or stimulation characteristics by referring to the relationship between the progression of state information and the usage history information. This makes it possible to perform situation-dependent control that cannot be explained by a simple uniform timer, such as "ending earlier only on days when fatigue is severe" or "continuing with weak induction while concentration is maintained, and advancing the stages when it starts to break down."

[0047] Furthermore, (as an example of the presentation method of the tactile stimulus) by configuring the tactile stimulus output unit to output tactile stimuli toward a spatial domain via a medium, and by using a configuration that uses multiple tactile stimulus output elements arranged in front, behind, to the left and right (including up and down or diagonally as needed) of the user's body, it is possible to generate tactile stimuli that envelop the user (including the sensation of being gently held back from behind). Such multi-directional tactile stimulation can, in three-dimensional games and VR environments, act as a sensation of being gently embraced from behind, for example, when the user is trying to move deeper into the virtual space. In spaces such as museums and the areas surrounding equipment, it can act as a sensation of being gently pushed back from the surroundings when the user has ventured too far into the spatial domain. As a result, users can reconsider continuing their actions or approaching the target based on their own experience, rather than being ordered to do so from the outside.

[0048] Thus, according to the present invention, by combining the setting or identification of a spatial area, multi-stage haptic control based on usage history information and usage restriction policy information, haptic presentation including the selection or switching of types of haptic patterns, and haptic presentation from multiple directions, it is possible to provide an autonomous haptic stimulus generation device that differs from conventional control methods that rely on mere warnings, forced locks, or physical barriers. Furthermore, by using state information representing the user's biological state as input information, in addition to the aforementioned contextual information, the continuation conditions and stimulus characteristics can be updated more appropriately. [Brief explanation of the drawing]

[0049] [Figure 1] This is a perspective view showing an example of the external configuration of an external frame-like device 110, which is one example of a tactile stimulus generating device according to one embodiment of the present invention, where (A) shows an example of attachment to a smartphone and (B) shows an example of attachment to a portable game console. [Figure 2](A) is a perspective view showing an example of the external configuration of an electronic device body 100 (e.g., a smartphone) incorporating a tactile stimulus generating device according to one embodiment of the present invention, and (B) is a schematic conceptual diagram showing how the tactile stimulus output unit 40 presents tactile stimuli toward a spatial domain (reference numeral 50) at one or more tactile stimulus presentation positions P set within or near the spatial domain. Candidate positions P1 to Pn represent a group of positions within (or near) the spatial domain 50 that can be targets for tactile stimulus presentation, and presentation position P is one or more positions selected from this group of positions. [Figure 3] This is a schematic diagram showing an example configuration in which a tactile stimulation generating device according to one embodiment of the present invention provides tactile stimulation to a user U and a spatial area (reference numeral 50) set around the user. [Figure 4] This is a schematic diagram showing a basic configuration example of a tactile stimulus generating device according to one embodiment of the present invention and a manner in which tactile stimuli are presented in a spatial area. [Figure 5] This is a block diagram showing an example configuration (including an acquisition unit) of a tactile stimulus generating device according to one embodiment of the present invention. [Figure 6] This is a flowchart showing an example of a tactile stimulus generation control flow according to one embodiment of the present invention. [Explanation of Symbols]

[0050] 10 Acquisition Department 20 Input section 30 Control Unit (CPU) 31 Input Analysis Unit 32 State Estimation / Condition Determination Unit 33 Stimulus characteristic determination / stimulus characteristic update section 34 Output / Loop Control Unit 35 Storage section 40 Tactile Stimulation Output Unit 40a~40n Tactile Stimulation Output Unit 50 spatial domain P: Presentation location of tactile stimulus (single or multiple; selected from candidate locations P1 to Pn) P1~Pn Candidate locations (a group of locations that could be targets for tactile stimulation) 100 Electronic equipment body 101 Display surface 110 External frame-like device U User [Mode for carrying out the invention] <Overall Structure>

[0051] Embodiments of the present invention will be described below with reference to the attached drawings. However, the present invention is not limited to the following embodiments, and various modifications are possible without departing from the spirit of the invention as described in the claims. The reference numerals in the drawings are provided for explanatory purposes only, and the spatial domain is not limited to the illustrated example (reference numeral 50), but may include various embodiments without departing from the gist of the invention as described in the claims.

[0052] As shown in Figure 1, in one embodiment, the tactile stimulation generation function can be realized by an external frame-like device 110. The external frame-like device 110 is configured to be detachable to match the external shape of an electronic device body 100 such as a smartphone, portable game console, or tablet terminal, and by arranging a tactile stimulation output unit 40 on at least a part of its inside or outside, the tactile stimulation generation function can be retrofitted to an existing electronic device body 100. In this case, the spatial area (reference numeral 50) may be set as the space around the hands, face, or body that the user U can perceive when operating the electronic device body 100 with their gaze or attention directed towards the display surface 101. In other words, the display surface 101 is the object to be viewed, and the spatial area is the area set around or in front of the display surface 101. A schematic example of the spatial area is shown in Figure 2(B). The entire configuration, including the external frame-like device 110 and the tactile stimulus output unit 40, can constitute the tactile stimulus generating device of the present invention.

[0053] In another embodiment shown in Figure 2(A), the tactile stimulus generating device may be built into an electronic device body 100 (e.g., a smartphone). The electronic device body 100 includes a display surface 101 and one or more tactile stimulus output units 40 positioned at any location such as the periphery of the housing, the front side, the back side, or inside the housing. The tactile stimulus output unit 40 forms a tactile stimulus within the medium based on a command from the control unit 30, which will be described later, and presents the tactile stimulus to the spatial area. The spatial area can be set as the space around the hands, face, or body that the user U can perceive when gazing at the display surface 101 and operating it with their fingers (a schematic example is shown in Figure 2(B)). If the electronic device body 100 is a mirror or a mirror-type display device, the spatial area can be set as the space around the mirror surface (display surface).

[0054] In the embodiment shown in Figure 3, the tactile stimulus generation function can be realized by a plurality of tactile stimulus output units 40a to 40n arranged around the user U. These tactile stimulus output units 40a to 40n may include a stand-type device and be configured to present tactile stimuli to the user U's body and the space around it from multiple directions. If necessary, a tactile stimulus output unit 40 built into a display device or operating device (controller, etc.) held in the user's hand may also be used in combination (not shown). Each tactile stimulation output unit 40a to 40n has a housing that is arranged in any positional relationship around a spatial region (exemplified by reference numeral 50 in the drawings). This housing may be fixed to a floor, wall, ceiling, support frame, etc., mounted on a mobile body such as a robotic arm, self-propelled cart, or drone, or even suspended in the air. The upper surface or near the upper end of each housing may be equipped with an acoustic output configuration (acoustic array, etc.) in which a plurality of acoustic conversion elements are arranged in a predetermined pattern (including matrix, polygonal, concentric, curved arrangement, etc.). Waves (e.g., ultrasound) output from the acoustic output configuration reach the space including the spatial region directly or via wave propagation such as reflection, refraction, and scattering, and as a result, local pressure fluctuations can be generated at predetermined locations within the space. Furthermore, by controlling the intensity or distribution density of tactile stimulation based on the pressure fluctuations to change continuously or stepwise depending on the location, the way tactile stimulation is perceived can be changed from the outer edge to the inside of the spatial region. In Figure 3, wave-like dotted lines extending from the tactile stimulus output units 40a and 40b toward the spatial domain schematically indicate the direction of wave propagation and the spatial domain to which tactile stimulation is applied by the wave. The spatial domain is set as the area to be monitored, among the area set on the extension of the display surface, a predetermined area in virtual space, or the space surrounding the exhibit or equipment, based on the user U's line of sight, the position or movement of their fingers and body, and their relative position to the display device (including the display surface) or exhibits / equipment. The generated tactile stimulus is configured to exert a physical effect on the user U's skin surface or a part of their body, or the space around their body, and as a result is perceived as touch through the user U's tactile and somatosensory senses.

[0055] In all the embodiments described above, the tactile stimulus generating device of the present invention can generate tactile stimuli within a medium using at least a portion of the tactile stimulus output unit 40 or tactile stimulus output units 40a to 40n, while considering the relationship between a spatial area (exemplified by reference numeral 50 in the drawings) set in correspondence with an object that the user is directing their gaze or attention to, and the user U's body and the space around their body corresponding to the spatial area, and can control the tactile stimuli to arrive from multiple directions. As a result, the tactile sensation associated with the spatial area (reference numeral 50) changes temporally and spatially, and the user U can naturally become aware of their degree of immersion in the screen or virtual space, or their proximity to exhibits, equipment, etc., through their own bodily sensations. Consequently, autonomous resting behavior, self-management of usage time, or suppression of excessive approach can be encouraged without relying on forced locks or physical barriers.

[0056] As shown in Figure 4, the tactile stimulus generating device of the present invention may include a form built into an electronic device body 100 and a form configured as an external frame-like device 110. The tactile stimulus generating device includes an acquisition unit 10 that can acquire area information for identifying or setting a spatial area (exemplified by reference numeral 50 in the drawing) and supply it to a control unit 30, an input unit 20 into which a user U or administrator can input or set usage restriction policy information (usage policy, target value, restriction conditions, etc.), a control unit 30 that determines the generation conditions and stimulus characteristics of tactile stimuli based on the input information (which may include the area information) received by the input unit 20, and a tactile stimulus output unit 40 (which may include tactile stimulus output units 40a to 40n) that presents tactile stimuli to the spatial area via a medium according to the determined conditions. The presentation position P (target position P) is a position selected from a plurality of candidate positions (P1 to Pn) set within the spatial area 50, and may be one or more.

[0057] The acquisition unit 10 has the function of acquiring area information for identifying or setting a spatial area (exemplified by reference numeral 50 in the drawing) and information about the user U. The acquisition unit 10 may include various sensors that enable non-contact measurement, and may also be configured to include an input interface (sensor signal acquisition interface) that receives signals from the sensors. The sensors included in the acquisition unit 10 may include, for example, optical sensors such as visible light cameras, infrared cameras, near-infrared imaging cameras, and distance image sensors (ToF cameras, stereo cameras, etc.), electrical sensors such as capacitive sensors, electrode arrays, and resistive film sensors, acoustic sensors such as microphones and ultrasonic receiving elements, mechanical sensors such as acceleration sensors, gyro sensors, pressure sensors, and force sensors, environmental sensors such as temperature sensors, humidity sensors, illuminance sensors, and gas / odor sensors, and electromagnetic sensors such as millimeter-wave radar, microwave Doppler sensors, and electromagnetic proximity sensors. These sensors may be used individually, or a multimodal sensor configuration may be formed by combining multiple types. Furthermore, the acquisition unit 10 may include biosensors such as a heart rate sensor, pulse wave sensor, electrocardiogram sensor, electromyogram sensor, electroencephalogram sensor, and near-infrared spectroscopy sensor, and the biosignals acquired by these can be used as at least part of the state information representing the user's biological state. Based on the signals from these sensors, the acquisition unit 10 can acquire information such as the user U's position, posture, and movements, the position and movement of their fingers, their gaze direction or head orientation, the extent of the spatial area they inhabit, the distance to exhibits and equipment, the state of the indoor environment, and the output state of the tactile stimulation output unit 40. Furthermore, if necessary, the system may be configured to acquire acoustic information such as the user U's skin surface temperature or humidity, the degree of sweating, breathing rhythm, pulse wave, speech sounds or exhalation sounds, and chemical information such as body odor or exhalation components. In this specification, this information may be acquired as including area information for identifying or defining a spatial area, and (if necessary) state information representing the user's biological state. This information is supplied from the acquisition unit 10 to the control unit 30 (which may include the input analysis unit 31) and may be treated as at least a part of the acquired information. The acquired information may be used to update at least a part of the tactile stimulus intensity, output position, output direction, time pattern, etc., by being referenced in combination with input information (which may include usage history information and usage restriction policy information), either stepwise or continuously.

[0058] Figure 5 is a block diagram showing an example configuration of a tactile stimulus generating device according to one embodiment of the present invention. The tactile stimulus generating device of this embodiment may be built into an electronic device body 100, configured as an external frame-like device 110, or include tactile stimulus output units 40a to 40n arranged around the user U. As shown in Figure 5, the tactile stimulus generating device includes an acquisition unit 10 that can acquire area information for identifying or setting a spatial area (exemplified by reference numeral 50 in the drawing), an input unit 20 into which the user U or administrator can input or set usage restriction policy information (usage policy, target value, restriction conditions, etc.), a control unit 30 that determines the generation conditions and stimulus characteristics of tactile stimuli based on the input information (which may include the area information) received by the input unit 20, a tactile stimulus output unit 40 that presents tactile stimuli to the spatial area via a medium based on the stimulus characteristics determined by the control unit 30, and a storage unit 35 that stores usage history information and usage restriction policy information, etc. The tactile stimulus output unit 40 may include the tactile stimulus output units 40a to 40n. The acquisition unit 10 may include various sensors and may also include an interface for receiving sensor signals. The input unit 20 may update at least a portion of the received input information using the region information supplied from the acquisition unit 10. The control unit 30 includes an input analysis unit 31 that analyzes at least a portion of the input information, a state estimation / condition determination unit 32 that estimates or determines continuation conditions and stimulation stages based on the input information, a stimulation characteristic determination unit 33 that determines stimulation characteristics and tactile patterns according to the autonomous support policy and the estimated state, and an output / loop control unit 34 that generates a drive signal to the tactile stimulation output unit 40 according to the determined stimulation characteristics and performs tactile stimulation output and loop control. The control unit 30 comprehensively controls the updating of the stimulus characteristics of tactile stimuli presented to the spatial domain (including gradual changes) and the output of termination notification tactile patterns, while referring as necessary to usage history information stored in the storage unit 35 and usage restriction policy information that may be supplied from an external device or management system.

[0059] The input analysis unit 31 analyzes at least a portion of the acquired information supplied from the acquisition unit 10 and the input information (operation input, control signals, setting information, etc.) provided via the input unit 20 or an external device or network. The input analysis unit 31 can analyze, for example, the movement trends of user U, the extent or positional relationship of the spatial area, the execution state of the application, changes in distance to exhibits and equipment, and generate analysis result data representing these. This analysis result data may be used by the state estimation / condition determination unit 32 to estimate the user state, determine or update the stimulus stage, and determine or update the position or range of the spatial area (including expansion, contraction, and deformation).

[0060] The state estimation / condition determination unit 32 can estimate the current usage state of user U (for example, posture, gaze direction, position or movement of fingers / body, degree of immersion, degree of approach to the spatial area, and fatigue level (including alertness level) estimated based on acquired information, input information, or a combination thereof) based on at least a portion of the analysis result data and acquired information from the input analysis unit 31, as well as usage history information and usage restriction policy information stored in the storage unit 35. Furthermore, the state estimation / condition determination unit 32 may be configured to determine the state from the perspective of autonomous support (autonomous state) based on the estimated state, and to determine or update the stimulus stage to which tactile stimulation should be applied. The state estimation / condition determination unit 32 may determine or update the position and range of the spatial area based on the estimation results. This update may include expanding, shrinking, or changing the range depending on the user's state or surrounding conditions. The spatial domain can be defined, for example, as the space in which a part of the user's body such as the palms, fingertips, face, or torso is located, or the space around the body that the body can perceive through touch, the space in front of the display screen, the domain defined along the line of sight in virtual space, or the area around an exhibit or equipment, or any other domain set within a predetermined distance of an intrusion restriction zone. The functions of the state estimation / condition determination unit 32 may be implemented as a single hardware or software module, or the state estimation function and the continuation condition determination function may be configured as separate modules and operated in coordination.

[0061] The state estimation / condition determination unit 32 can determine the conditions for generating tactile stimuli based on the estimated state, as well as the usage history information and usage restriction policy information stored in the memory unit 35. The generation conditions may include, for example, the location or range where the tactile stimulus is output, the output start timing, the output duration and pause time, the upper limit or range of change of the output level, the spatial distribution pattern within the spatial area, and the assignment to stimulus stages such as the comfort stage, the attention stage, and the termination notification stage. The state estimation / condition determination unit 32 may update the generation conditions as needed in response to the passage of time, updates to usage history information, changes in acquired information, changes in input information, or combinations thereof, and provide the results to the stimulus characteristic determination unit 33 and the output and loop control unit 34.

[0062] The stimulus characteristic determination unit 33 (including the updating of stimulus characteristics) can determine the specific stimulus characteristics of tactile stimuli based on the generation conditions, usage history information, and usage restriction policy information determined by the state estimation / condition determination unit 32. The stimulation characteristics may include, for example, the intensity, frequency, phase, pulse width of pressure fluctuations within the medium, the temporal arrangement of each pulse, the generation location within the spatial domain and its temporal change, and simultaneous or sequential excitation patterns of multiple points. The stimulus characteristic determination / stimulus characteristic update unit 33 may select a pattern from among multiple types of tactile patterns defined in the memory unit 35 corresponding to each stimulus stage, such as the comfort stage, the attention stage, and the termination notification stage, and may gradually or continuously change at least a part of the stimulus characteristics according to the usage history information and the usage restriction policy information. Furthermore, such updates may include switching of tactile patterns, gradual changes in the content of tactile patterns, and superposition of multiple tactile stimuli. The aforementioned tactile pattern is not limited to a mode in which a single stimulus is repeated, but may be defined as a combination of stimuli for multiple candidate positions P1 to Pn within a spatial domain, and may include modes in which different stimulus characteristics are assigned to each desired position, and modes in which such assignments are changed over time.

[0063] The state estimation / condition determination unit 32 can determine the continuation conditions during the period in which the tactile stimulus is presented. The conditions for continuation may be defined based on usage history information, usage restriction policy information, acquired information, and input information. For example, regarding the use of electronic devices, conditions for continuation may include that the continuous usage time has not reached the upper limit set by the policy, that the time spent inside the spatial area around exhibits and equipment has not exceeded the permissible value, and that no stop command has been issued from an external device or management system. The location or range of the spatial area used to determine the continuation conditions may be determined or updated based on at least one of the usage history information and the usage restriction policy information, in addition to the acquired information and input information, and may be expanded or contracted according to the acquired information or user status information indicating the state of the surrounding environment. The output / loop control unit 34 may be configured to generate a drive signal to the tactile stimulation output unit 40 according to the determination result of the continuation condition and the stimulus characteristics, and to continue or stop the output of the tactile stimulation.

[0064] The memory unit 35 stores usage history information of the tactile stimulus generating device, i.e., information indicating continuous usage time, cumulative usage time, number of operations, etc., and can also store usage restriction policy information that may be supplied from an external device or management system, and setting policy information set by the user U or administrator through the user interface (or setting policy information that has been confirmed by accepting the policy content presented externally). The usage restriction policy information may include, for example, the permissible daily usage time, the upper limit of continuous usage time, usage restrictions during specific time periods, the permissible stay time within a spatial area or the permissible conditions for approaching said spatial area, the distance conditions from the outer edge of the spatial area, and recommended usage time by age group.

[0065] The tactile stimulus output unit 40 has the function of generating physical effects such as pressure fluctuations, vibrations, and deformations within the medium (propagation medium) based on the stimulus characteristics determined by the stimulus characteristic determination unit 33, and presenting them as tactile stimuli associated with a spatial domain. In a typical embodiment, the tactile stimulus output unit 40 (or tactile stimulus output units 40a to 40n) may be configured as an acoustic array in which a plurality of acoustic conversion elements are arranged in a predetermined pattern (including matrix, polygonal, concentric, curved arrangement, etc.). In one embodiment, each acoustic conversion element outputs ultrasonic waves of the same frequency, and when the control unit 30 is given a presentation position P (one or more) set within (or near) the spatial domain, it independently controls the drive phase and output amplitude of each acoustic conversion element based on the distance to the position P and the sound path difference (including direct propagation as well as propagation via reflectors, waveguides, etc., as needed). Here, the presentation position P (P1 to Pn in the case of multiple positions) represents the position in (or near) the spatial domain where a tactile stimulus is presented. As a result, at position P, the ultrasonic waves from each element overlap in almost the same phase, causing a locally high sound pressure, while at other positions, the waves cancel each other out, resulting in a relatively low sound pressure. In this specification, a localized high-sound-pressure region formed in space in this way is called an "acoustic focus." The control unit 30 selects a position from the spatial domain corresponding to the palm, fingertips, face, or surrounding space of the user U detected by the acquisition unit 10, and generates a localized tactile sensation in the air by updating the drive phase and output amplitude of the acoustic conversion element in time so that the acoustic focus is formed at that position. Furthermore, by configuring the system to move the presentation position P over time, to select and set multiple candidate positions P1 to Pn simultaneously or sequentially, or to change the density or arrangement of acoustic focal points according to the spatial distribution within the spatial domain, it is possible to generate a sensation that has a planar or expansive feel, for example, as if the entire face is being gently pushed back. In this case, multiple candidate positions P1 to Pn may be set as multiple control focal positions (or local regions near the focal points), and the method may include assigning stimulus characteristics such as drive phase, output amplitude, modulation frequency, pulse width, and presentation timing individually to each position P1 to Pn. Furthermore, the stimulus characteristics at each position P1 to Pn are not limited to being the same, but may include a method in which different stimulus characteristics are assigned to each other, and when these are presented simultaneously or in a time-coordinated manner, even if the stimuli given at each position are different, the user may perceive it as a unified tactile sensation in a planar, fluid, or enveloping manner, where the stimuli at multiple points are integrated. This unified tactile sensation is not limited to a shape impression, but may be perceived as a tactile impression such as a feeling of resistance, elasticity, hardness or softness, viscosity or resistance, frictional change, roughness, wetness, airflow, warmth or coldness, pulsation, vibration, a feeling of being drawn in, or a feeling of being enveloped. Therefore, this may include a configuration in which an acoustic focus is formed targeting multiple candidate positions P1 to Pn (or their local regions) within a spatial domain, and the distribution of tactile stimuli within the spatial domain is constituted by the set of these multiple candidate positions. Furthermore, if user U approaches the acoustic array too close to a predetermined distance, the system may be controlled to either not generate an acoustic focus in the area inside that predetermined distance, or to reduce the intensity of the tactile stimulus. Furthermore, the tactile stimulation output unit 40 is not limited to an ultrasonic array, but can also employ configurations that generate physical stimuli in a spatial domain that reflect the aforementioned stimulation characteristics, such as a configuration that vibrates the surface of the housing with a vibrator inside the housing, a configuration that applies force to the skin surface with an airflow or liquid flow from a nozzle, a configuration that changes the coefficient of friction with the skin with electrostatic force, a configuration that transmits pressure changes or deformations via liquid or gel, or a configuration that changes the surface temperature. Furthermore, the tactile stimulation output unit 40 is not limited to transmission via a medium as a substance, but may also be configured to generate mechanical or thermal effects on a member within or corresponding to a spatial region due to an electromagnetic field or radiation, and such effects may be perceived by the user as touch (including use in a vacuum environment). All of these configurations are driven according to the stimulus characteristics (intensity, frequency, spatial distribution, temporal pattern, etc.) specified by the stimulus characteristic determination unit 33, and are controlled to present tactile stimuli associated with a spatial domain.

[0067] Figure 6 shows an example of an autonomous assisted tactile stimulus generation control flow according to one embodiment of the present invention. The control unit 30 controls the generation and presentation of tactile stimuli by sequentially or repeatedly executing each of the steps shown in Figure 6 while the tactile stimulus generation device is in operation.

[0068] In step S1, in response to triggers such as the activation of the tactile stimulus generating device, the start of the target application, or the commencement of monitoring around the exhibition space / equipment, the input unit 20 acquires or reads input information received from the input unit 20, or input information supplied from an external device or management system, etc., including user targets, usage restriction policy information, and setting information related to the stage configuration (assignment of tactile patterns for each stage, stage transition conditions, etc.). At the same time, the continuous usage time counter and the cumulative usage time counter are initialized or updated from their previous values. Furthermore, if necessary, past usage history information stored in the storage unit 35 may be read and reflected in the setting information or the initial values ​​of the counters.

[0069] In step S2, the acquisition unit 10 acquires information relating to the spatial area and user U. Furthermore, it may acquire or refer to usage history information stored in the storage unit 35, or log information (application usage history, categories of viewed content, etc.) from the electronic device body 100 or external devices. The input analysis unit 31 analyzes at least a portion of the acquired information and the input information to generate analysis result data representing the location and range of the spatial area (including enlargement, reduction, and deformation of shape), an index representing the degree of immersion or concentration of user U (including fatigue or alertness), the execution status of the application, the distance to exhibits and equipment, and the status of stay within the spatial area (reference numeral 50).

[0070] Next, in step S3, the input analysis unit 31 receives the acquired information supplied from the acquisition unit 10, as well as the input information provided via the input unit 20, an external device or management system, a network, etc. At least a portion of this information is preprocessed. The information subject to preprocessing may include user status information, time spent in the spatial area or distance from the object, usage history information including continuous usage time, cumulative usage time, usage time interval, usage time period, and number of operations, application usage history that can be acquired by the electronic device 100 or an external device or management system, software log information such as the category of viewed content, and usage restriction policy information. In addition to policy information that can be supplied from an external device or management system, the usage restriction policy information may also include information set by the user or administrator through the user interface, or information that has been confirmed and accepted regarding policy content presented externally. Furthermore, the input information may also include setting information indicating the type of tactile pattern selected or customized in advance by the user or administrator, its assignment to each stimulation stage, and the permissible range of stimulation intensity or rate of change. The state estimation / condition determination unit 32 refers to the pre-processed data supplied from the input analysis unit 31, as well as past usage history information, usage restriction policy information, and setting information related to tactile patterns stored in the storage unit 35, and estimates or determines the state representing the autonomous state of user U (which may include, for example, the degree of immersion, the degree of fatigue (including the degree of alertness), the degree of approach to the spatial area, and the input results regarding the previous intention to continue) and the conditions for generating tactile stimuli. At this time, the state estimation / condition determination unit 32 may also determine or update the stimulus stage, which indicates at what stage the output of tactile stimuli should be performed. Furthermore, the state estimation / condition determination unit 32 may determine or update the position and range (including expansion, contraction, and deformation) of the spatial area based on acquired information or input information, as well as usage history information or usage restriction policy information.

[0071] Next, in step S4, the stimulus characteristic determination unit 33 selects a tactile pattern from among multiple types of tactile patterns defined in the memory unit 35, based on the stimulus stage and generation conditions determined or updated by the state estimation / condition determination unit 32. The stimulus characteristic determination unit 33 calculates stimulus characteristics such as the intensity, frequency, pulse width, spatial distribution, presentation position, temporal change pattern, and presentation interval of the tactile stimulus corresponding to the selected tactile pattern, and outputs the results to the output / loop control unit 34. In this case, the memory unit 35 may store setting information such as pattern assignment for each stage, upper limit intensity, rate of change, and form of the termination notification tactile pattern, which have been set in advance by the user or administrator through the user interface. The stimulation characteristic determination unit 33 may select a tactile pattern according to the usage history information and usage restriction policy information within the permissible range defined by the setting information, and adjust at least a part of the stimulation characteristics. Furthermore, in response to the passage of time, updates to usage history information, or changes in acquired or input information, the state estimation / condition determination unit 32 may change the stimulus stage, and accordingly, the tactile pattern selected by the stimulus characteristic determination unit 33 and the calculated stimulus characteristics may also be changed. Such changes are not limited to switching tactile patterns, but may include methods of gradually or continuously (including ramp-like or slope-like) changing at least a part of the intensity, spatial distribution, presentation interval, etc., while maintaining the same tactile pattern. This allows for the use of a relatively gentle tactile pattern in the initial stage, and as use continues or the user approaches the target excessively, a smooth transition, not limited to discontinuity, to a more attention-grabbing pattern or an end-notification tactile pattern.

[0072] In step S5, the output / loop control unit 34 generates a drive signal to the tactile stimulus output unit 40 according to the stimulus characteristics, and drives the tactile stimulus output unit 40 to present tactile stimuli to the spatial region via a medium (propagation medium), or tactile stimuli based on mechanical or thermal effects occurring in the spatial region or on members corresponding to the spatial region due to electromagnetic fields or radiation. If the tactile stimulation output unit 40 includes an acoustic output configuration that can form a local pressure fluctuation region within the medium (for example, one or more acoustic conversion elements, and a configuration that controls the wavefront of the waves output from the acoustic conversion elements), the output loop control unit 34 may set the presentation position P (which may include one or more positions P1 to Pn) of the acoustic focus formed within (or near) the spatial region, and perform temporal changes (including continuous or stepwise changes) of the output pattern, including the movement of the position P, simultaneous or time-division presentation of multiple positions P1 to Pn, and arrangement or density. This allows for a tactile presentation that transitions the user U from a comfortable stage to a warning stage, and further to a termination notification stage (or boundary stage). This presentation is not limited to changes in stimulus intensity, but may also include changes in spatial distribution, presentation position, presentation timing, frequency, modulation, pulse width, presentation interval, etc., as well as combinations thereof, to change not only the shape impression such as planar, fluid, or enveloping, but also the texture impression such as resistance, elasticity, hardness or softness, viscosity or resistance, frictional change, airflow, and temperature. The type or combination of tactile patterns used at each stage can be determined based on user or administrator settings stored in the memory unit 35. Within the permissible range of these settings, changes (including switching of tactile patterns) can be made in accordance with usage history information and usage restriction policy information. This makes it easier for the user to make autonomous interruption decisions without being unilaterally forced from the outside, using the changes in tactile sensations they have previously permitted as clues.

[0073] The output / loop control unit 34 may, if necessary, provide guidance via the input unit 20 to obtain the user's intention to continue, or accept selection input (such as continue / stop). In step S6, the output / loop control unit 34 determines predetermined conditions, and these predetermined conditions may include at least one of the conditions under which processing should be terminated, separate from the continuation conditions (step S9), such as a stop instruction from an external device or management system, a compulsory stop requirement based on safety or operational constraints, or a state in which it is determined that continuing processing is inappropriate due to insufficient or abnormal acquired information (these are examples and not limitations). If the predetermined conditions are met in step S6 (step S6: YES), the process proceeds to step S7, and a termination notification tactile pattern may be output. If the predetermined conditions are not met in step S6 (step S6: NO), the process proceeds to step S8. In step S8, the output / loop control unit 34 acquires or estimates the user U's intention to continue and updates the usage history information. The intention to continue can be acquired, for example, by selecting "continue / stop" on the user interface of the input unit 20, by estimating the intention based on the presence or content of a predetermined input, or by indicating a state that no input has been made for a certain period of time. Information representing this intention to continue (which may include continuation or interruption) can be recorded in the storage unit 35 in association with the usage history information. At this time, the continuous usage time, cumulative usage time, usage time interval, time spent in the spatial area, number of proximity warnings, and the type of stimulation stage or tactile pattern at that time may also be updated.

[0074] In step S9, the output / loop control unit 34 determines whether to continue. The continuation conditions may be defined based on usage history information, usage restriction policy information, and the intention to continue obtained in step S8. For example, regarding the use of electronic equipment, if the continuous usage time, usage interval, or amount of use of a specific application or content exceeds the permissible value defined in the policy, or regarding the exhibition space / facility, if the time spent in the spatial area or the distance from the protected object exceeds the set permissible value, or if a stop instruction is issued from an external device or management system, it may be determined that the continuation conditions are not met. Furthermore, if the intention to continue indicates interruption, it may be determined that the continuation conditions are not met. If the continuation condition is met (Step S9: YES), the process returns to Step S2, where the acquired information is updated and the generation conditions and stimulus characteristics are re-determined. This allows the tactile stimuli to be updated as needed in response to changes in the user U's state or spatial area. On the other hand, if the continuation condition is not met (step S9: NO), a termination notification tactile pattern is output, and the user U is tactilely informed of the need to end the session or reach a boundary, after which the output of tactile stimuli is stopped.

[0075] As a typical application example of the present invention, a configuration in which the tactile stimulation generating device of the present invention is applied to the usage time management of a smartphone 100 will be described. The application form to the smartphone 100 may include a form in which it is attached as an external frame-like device 110 (Figure 1(A)) or a form in which it is built into the electronic device body 100 (Figure 2(A)). The user U or administrator can set in advance via the input unit 20 the configuration of stimulation stages according to the target usage time per day, the target time per session, the continuous usage time, etc., and the type of tactile pattern to be associated with each stage. This setting information is stored in the storage unit 35 and, together with usage restriction policy information that may be supplied from an external device or management system, is referenced as a basis for autonomous support type control by the control unit 30.

[0076] In the control flow shown in Figure 6, in step S1, in response to the activation of the tactile stimulus generating device, the start of the target application, or the start of monitoring, past usage history information and usage restriction policy information, as well as the setting information set via the input unit 20, are read from the storage unit 35 and associated with the current session. In step S2, the acquisition unit 10 acquires information about the user U (such as the position and movement of their hands, face, and body) and information about the spatial area set when the user directs their gaze or attention to the display surface 101 while operating it. The input analysis unit 31 analyzes at least a portion of the acquired information and input information to generate analysis result data. At this time, the position and range of the spatial area may be determined or updated based on usage history information or usage restriction policy information in addition to the acquired information and input information, and may be enlarged, reduced, or transformed depending on the surrounding conditions or the user's state. In step S3, the state estimation / condition determination unit 32 estimates the autonomous state of user U (degree of immersion, degree of fatigue (including degree of alertness), degree of approach to the spatial area, etc.) based on the analysis result data, usage history information, usage restriction policy information, etc., and determines or updates the conditions for generating tactile stimuli and the stimulation stage. In step S4, the stimulus characteristic determination unit 33 selects a pattern to be used for the given stimulus stage from among multiple types of tactile patterns defined in the memory unit 35, or combines such patterns, based on the determined or updated stimulus stage and generation conditions, and calculates stimulus characteristics such as intensity, frequency, spatial distribution, presentation position, presentation interval, and temporal change pattern.

[0077] In step S5, the output / loop control unit 34 drives the tactile stimulus output unit 40 based on the stimulus characteristics calculated by the stimulus characteristic determination unit 33, and presents tactile stimuli in the spatial domain. For example, in the case of smartphone use, in the initial stage, a relatively mild tactile pattern selected in advance by the user is presented, and in response to changes in continuous usage time, usage time interval, user status information, etc., it may gradually transition to a pattern equivalent to a warning. In step S8, the output / loop control unit 34 acquires or estimates the user U's intention to continue using the service, records the result as usage history information in the storage unit 35, and updates the continuous usage time, cumulative usage time, etc., as necessary. In step S9, the output / loop control unit 34 determines whether to continue based on the usage history information, usage restriction policy information, and the intention to continue. If the continuation condition is met (step S9: YES), the process returns to step S2, and the acquired information is updated, and the generation conditions and stimulus characteristics are re-determined. On the other hand, if the continuation condition is not met (step S9: NO), a termination notification tactile pattern that is distinguishable from other stages is presented, and the user U is tactilely shown the need to end the session or reach a boundary, after which the output of the tactile stimulus is stopped. Thus, the present invention can realize an autonomous support type of usage time management that encourages self-determination to "stop now" using tactile stimuli as a clue, without relying on visual displays or forced locks. <Other Embodiments>

[0078] Furthermore, the medium (propagation medium) in the present invention is not limited to air, and a configuration may be adopted in which a gas other than air, liquid, gel, solid, or a combination thereof is used to generate physical effects such as local pressure fluctuations, vibrations, deformations, flow, changes in the coefficient of friction, or changes in temperature distribution within the spatial region (reference numeral 50) or within the medium corresponding to said spatial region (reference numeral 50). The said physical effects are not limited to those that directly act on the user U, but also include those that can be perceived as touch by the user U through a component corresponding to the spatial region (reference numeral 50) (e.g., the surface of the housing, components around the display surface, clothing, protective equipment, etc.). For example, configurations that present tactile stimuli via a liquid medium in a device used underwater, or configurations that present a feeling of pressure or deformation via a gel sheet or elastic body, may also be included as one form of the tactile stimulus output unit 40 (or tactile stimulus output units 40a to 40n). Furthermore, the present invention is not limited to transmission via a medium as a substance, but may also include embodiments that generate mechanical or thermal effects within a spatial region through an electromagnetic field or radiation, and that such effects can be perceived by the user as touch. Therefore, even when the device is used in a vacuum environment, a configuration may be adopted that presents tactile stimuli through the aforementioned effects caused by an electromagnetic field or radiation, or through the transmission of effects via a solid, liquid, or gel. Furthermore, wave propagation is not limited to direct propagation, but may include methods of reaching a desired presentation position P(s) or desired spatial distribution via reflectors, waveguides, diffusers, sound insulators, lens structures, or resonant structures. Moreover, the tactile stimulation output unit 40 is not limited to a single method, but may be configured to present tactile stimulation as a composite stimulus that superimposes multiple types of physical effects by combining the generation of pressure fluctuations within the medium with housing vibration, airflow or liquid flow, electrostatic friction modulation, electrical stimulation, temperature stimulation, etc. Furthermore, the presentation of tactile stimuli is not always limited to being localized to a single point on the user U's skin, but may include a mode in which at least a part of the presentation position P and stimulus characteristics (intensity, frequency, presentation interval, temporal change pattern, spatial distribution, etc.) are changed over time so that it can be perceived as a point-like, linear, planar, or volumetric tactile sensation (such as a feeling of being surrounded, a feeling of being pushed back, a feeling of being pulled, a feeling of fluidity, etc.).

[0079] Furthermore, the spatial domain is not limited to the area around the user's palm, but may also be an area set around the user's face, body, or display device. Moreover, the spatial domain may be an area defined within a virtual space. In configurations combined with display devices such as head-mounted displays and smart glasses, the spatial domain may be set in correspondence with a coordinate system or field of view within the virtual space, and the autonomous assisted haptic control of the present invention can be applied even in virtual environments including AR / MR / VR. In this case, haptic feedback may contribute to an improved sense of presence by making it easier for the user to grasp changes in their own state or the approach of boundaries.

[0080] Furthermore, the tactile stimulus generating device of the present invention is not limited to applications that suppress excessive approach to exhibits in art museums and exhibition halls, but can also be applied to spatial areas set around objects that users should not approach carelessly, such as precision instruments, high-voltage equipment, and industrial equipment, or around the periphery of restricted access areas. In addition, the restricted access area is not limited to objects that directly harm people, but may be set as a boundary to deter, for example, wild animals (such as deer) from entering farmland, or pets (such as cats) from entering restricted areas (such as kitchens). The spatial area is not limited to being fixedly set around an object, but its position, range, or shape (including enlargement, reduction, and deformation) may be determined or updated based on acquired information, input information, usage history information, or usage restriction policy information. In this case as well, the user U can make a decision to refrain from approaching based on tactile feedback without relying on visual warning displays or enforceable physical barriers.

[0081] Furthermore, the tactile stimulus generating device of the present invention can be used in conjunction with another device or system that performs visual display control (for example, a display control system that presents visual effects on a display screen). The other device or system may also include a configuration that provides auditory presentation, or a configuration that combines visual and auditory presentation. In this case, by combining visual, auditory, and tactile stimuli, a more multifaceted signal can be presented to the user U, thereby enhancing the autonomous support effect. On the other hand, the present invention can also be implemented as a standalone tactile stimulus generating device that does not have such a visual display control function or sound presentation function, and a configuration that uses only tactile stimulation to promote autonomous inhibition of usage time or approach behavior is also included in the scope of the present invention.

[0082] Furthermore, the tactile stimulus generating device of the present invention is useful not only for general users for managing usage time or access control, but also for users who may have difficulty spontaneously interrupting their use due to visual stimuli or immersion in specific content. For example, when a user starts viewing a mirror image, a specific screen display, or content such as social media, they may find it difficult to stop viewing or operating the device due to a disruption in their internal sense of time, strong habituation, or compulsive checking behavior. According to the device of the present invention, by combining a tactile pattern that changes in stages according to usage history information and usage restriction policy information with a termination notification tactile pattern that indicates the end, it is possible to consistently present the timing of a break in viewing or operation as a bodily sensation. As a result, user U can more easily recognize "I'll stop here for now" through their bodily sensations without taking their eyes off the screen or mirror image, and in the long term, they will be more likely to learn autonomous usage interruption behavior or self-monitoring behavior patterns. It should be noted that the above-mentioned application examples are just examples of how the present invention can be used, and the scope of application of the present invention is not limited to these examples.

[0083] Furthermore, in the tactile stimulus generating device of the present invention, user status information, usage history information, usage restriction policy information, and other usage policy information acquired or received by the acquisition unit 10 and the input unit 20 may be configured to be processed only within the device, depending on the embodiment. Even if transmitted to an external management system, the information may be handled in a format that does not identify individuals through statistical analysis, anonymization, pseudonymization, encryption, etc., or in a sufficiently protected format. In addition, for tactile stimuli presented by the tactile stimulus output unit 40, fail-safe control may be added to limit the upper limit or cumulative value related to the stimulus characteristics or output amount from a safety standpoint. For example, by configuring the device to gradually reduce the output level or temporarily stop the output to ensure a rest period when continuous output or cumulative output within a short period exceeding a predetermined threshold is detected, the aforementioned autonomous support effect can be maintained while reducing the physical or mental burden during long-term use.

Claims

1. A tactile stimulus generating device that generates tactile stimuli to be added to a spatial area set as the area perceived by the user, An input unit that receives input information input to the tactile stimulus generating device, A control unit that determines the conditions for generating the tactile stimulus in the spatial region based on the input information, A tactile stimulus output unit outputs tactile stimuli towards the spatial region based on the generation conditions determined by the control unit, Equipped with, The input information includes the usage history information of the tactile stimulus generating device, The usage history information includes information that encompasses at least one history parameter representing the usage state of the tactile stimulus generating device or the state of involvement with the spatial area, The input information further includes setting information that indicates at least one of the types of tactile patterns, their assignment to each stimulation stage, and the permissible range of stimulation intensity or rate of change, which are set in advance by the user or administrator. The control unit modifies at least a portion of the stimulation characteristics of the tactile stimulus in steps according to the usage history information, within the permissible range determined by the setting information. A tactile stimulation generating device characterized by the following features.

2. A tactile stimulus generating device that generates tactile stimuli to be added to a spatial area set as the area perceived by the user, An input unit that receives input information input to the tactile stimulus generating device, A control unit that determines the conditions for generating the tactile stimulus in the spatial region based on the input information, A tactile stimulus output unit outputs tactile stimuli towards the spatial region based on the generation conditions determined by the control unit, Equipped with, The aforementioned input information includes usage restriction policy information, The aforementioned usage restriction policy information includes information set by the user or administrator, or information that has been confirmed and approved by the user or administrator after reviewing the policy content presented by an external device or management system. The aforementioned usage restriction policy information is information that specifies at least a part of the permissible usage time or usage conditions of the tactile stimulation generating device, The aforementioned usage restriction policy information specifies at least one of the following: recommended usage time, rest intervals, target usage time, timing for encouraging breaks, permissible stay time within the spatial area, permissible conditions for approaching the spatial area, or distance conditions from the outer edge of the spatial area. The control unit, based on the usage restriction policy information, modifies the continuation conditions determined during the output of the tactile stimulus, updates at least a portion of the stimulus characteristics of the tactile stimulus, or does both. A tactile stimulation generating device characterized by the following features.

3. A tactile stimulation generating device according to claim 1 or 2, The aforementioned input information includes state information representing the user's biological state, The control unit, based on the state information, changes the continuation condition determined during the output of the tactile stimulus, updates at least a part of the stimulus characteristics of the tactile stimulus, or does both. A tactile stimulation generating device characterized by the following features.

4. A tactile stimulation generating device according to claim 3, The tactile stimulation generating device further comprises a state information acquisition unit that acquires state information representing the user's biological state, The control unit is configured to change the continuation condition determined during the output of the tactile stimulus, update at least a part of the stimulus characteristics of the tactile stimulus, or do both, based on the state information acquired by the state information acquisition unit. A device that generates tactile sensations.

5. A tactile stimulation generating device according to claim 1 or 2, The aforementioned stimulus characteristics include a termination notification tactile pattern that is output when predetermined conditions are met. The termination notification tactile pattern is configured to have at least one of a temporal change and / or a spatial change that is distinguishable from other states of the stimulus characteristics, and may have both. A device that generates tactile sensations. That's all.

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