Adaptive digital signage system and method for controlling thereof

Abstract

Disclosed is an adaptive digital signage system (100, 300), comprising a group of digital signages (102A-C, 302A-C), wherein each digital signage comprises a corresponding display (104) configured to display visual content, a corresponding ambient light sensor (106) configured to 5 measure an amount of ambient light received by said digital signage, and a corresponding communication interface (108) configured to transmit the measured amount of ambient light received by said digital signage, and to receive control data; and a system control unit (110) configured to receive the transmitted measured amount of ambient light, compare 10 the received measured amount of ambient light, select a reference digital signage from the group of digital signages based on comparison, and provide the control data to control the brightness of the group of digital signages based on the brightness of the reference digital signage.

Description

[0001] ADAPTIVE DIGITAL SIGNAGE SYSTEM AND METHOD FOR.

[0002] CONTROLLING THEREOF

[0003] TECHNICAL FIELD

[0004] The present disclosure relates to adaptive digital signage systems. Moreover, the present disclosure relates to methods for controlling adaptive digital signage systems.

[0005] BACKGROUND

[0006] Advancement in the field of digital signages have gained popularity over the years due to a plethora of applications such as advertising, information display, and interactive user experiences. The said digital signages can range from small screens in retail stores to large video walls in stadiums or transportation hubs. The ability to deliver dynamic and visually engaging content in real-time has made the digital signages an effective tool for communication and marketing purposes. With the increasing demand for personalized and interactive experiences, the field of digital signages continues to evolve, incorporating technologies such as touchscreens, motion sensors, and data analytics to enhance user engagement and deliver targeted content.

[0007] However, the domain of digital signages face challenges related to inconsistent display brightness levels when the digital signages are used in a group. In existing solutions, individual digital signages amongst the group of digital signages would adjust their brightness based on ambient light using sensors or manual settings, which helped each digital signage adapt to its own environment, however it didn't solve the problem of multiple nearby digital signages having different brightness levels. The lack of coordination results in visual inconsistencies, with digital signages in direct sunlight appearing brighter than those in shaded areas. The visual inconsistencies not only diminished the overall effectiveness of the group of digital signages but also caused discomfort or distraction for viewers. Moreover, the existing solution lack a centralized or coordinated mechanism to synchronize the brightness levels of multiple digital signages.

[0008] Therefore, in light of the foregoing discussion, there exists a need to overcome the aforementioned drawbacks.

[0009] SUMMARY

[0010] The aim of the present disclosure is to provide an adaptive digital signage system and a method for controlling thereof to effectively determine and synchronize an appropriate brightness level for a group of digital signages. The aim of the present disclosure is achieved by an adaptive digital signage system and a method for controlling thereof as defined in the appended independent claims to which reference is made to. Advantageous features are set out in the appended dependent claims.

[0011] The embodiments of the present disclosure substantially enable to improve the consistency of brightness levels across multiple digital signages, ensuring uniform visual appearance and enhanced readability in both outdoor and indoor environments, regardless of sunlight or shadow interference. By dynamically adjusting the brightness based on a reference signage, the system reduces visual discomfort and increases the impact of displayed content, thereby improving user engagement and advertising effectiveness.

[0012] Throughout the description and claims of this specification, the words "comprise" , "include", "have", and "contain" and variations of these words, for example "comprising" and "comprises" , mean "including but not limited to", and do not exclude other components, items, integers or steps not explicitly disclosed also to be present. Moreover, the singular encompasses the plural unless the context otherwise requires. In particular, where the indefinite article is used, the specification is to be understood as contemplating plurality as well as singularity, unless the context requires otherwise.

[0013] BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 is an illustration of a block diagram of an adaptive digital signage system, in accordance with an embodiment of the present disclosure;

[0015] FIG. 2 is an illustration of a flowchart depicting steps of a method for controlling an adaptive digital signage system, in accordance with an embodiment of the present disclosure; and

[0016] FIG. 3 is a timing diagram of an of an adaptive digital signage system, in accordance with an embodiment of the present disclosure.

[0017] DETAILED DESCRIPTION OF EMBODIMENTS

[0018] The following detailed description illustrates embodiments of the present disclosure and ways in which they can be implemented. Although some modes of carrying out the present disclosure have been disclosed, those skilled in the art would recognize that other embodiments for carrying out or practising the present disclosure are also possible.

[0019] In a first aspect, the present disclosure provides an adaptive digital signage system, comprising: a group of digital signages, wherein each digital signage comprises: a corresponding display configured to display visual content, a corresponding ambient light sensor configured to measure an amount of ambient light received by said digital signage, and a corresponding communication interface configured to transmit the measured amount of ambient light received by said digital signage, and to receive control data; and a system control unit configured to: receive the transmitted measured amount of ambient light, compare the received measured amount of ambient light, select a reference digital signage from the group of digital signages based on comparison, and provide the control data to control the brightness of the group of digital signages based on the brightness of the reference digital signage.

[0020] The present disclosure provides an aforementioned adaptive digital signage system that provides consistent brightness levels among the group of digital signages. The consistency and synchronization of the brightness levels ensure a uniform visual appearance for viewers, regardless of their exposure to sunlight or other environmental variables. Moreover, the adaptive digital signage system is suitable for use in outdoor settings, such as shopping malls or exhibition centres, where different digital signages from amongst the group of digital signages may be exposed to varying levels of sunlight. Furthermore, the adaptive digital signage system ensures that all messages and advertisements are easily visible and equally impactful, enhancing the overall viewing experience.

[0021] In a second aspect, the present disclosure provides a method for controlling an adaptive digital signage system comprising a system control unit and a group of digital signages, wherein each digital signage comprises a corresponding display, a corresponding ambient light sensor, and a corresponding communication interface, wherein the method comprises: measuring an amount of ambient light received by each digital signage, using the corresponding ambient light sensor of each digital signage; transmitting the measured amount of ambient light received by each digital signage and receiving control data, using the corresponding communicating interface of each digital signage; receiving the transmitted measured amount of ambient light, by the system control unit; comparing the received measured amount of ambient light, using the system control unit; selecting a reference digital signage from the group of digital signages based on the comparison, using the system control unit; and providing the control data for controlling the brightness of the group of digital signages based on the brightness of the reference digital signage, using the system control unit.

[0022] The present disclosure provides an aforementioned method that provides consistent brightness levels among the group of digital signages. The consistency and synchronization of the brightness levels ensure a uniform visual appearance for viewers, regardless of their exposure to sunlight or other environmental variables. Moreover, the method is suitable for use in outdoor settings, such as shopping malls, where different digital signages from amongst the group of digital signages may be exposed to varying levels of sunlight. Furthermore, the method ensures that all messages and advertisements are easily visible and equally impactful, enhancing the overall viewing experience.

[0023] Throughout the present disclosure, the term "digital signage" refers to an arrangement of mechanical, electronic, software and firmware components configured for displaying information (such as, advertisements, alerts, news, etc.) on either side to allow user(s) to view from multiple angles and / or locations. The digital signage is designed to cater for indoor, as well as outdoor environmental conditions such as, weather, temperature, water, humidity, wind loading, etc. and configured to withstand robust environments e.g., harsh environmental conditions such as, high humidity, extreme temperatures, vandalism and / or accidents. The digital signage can be clearly viewed by a mass audience from varying distances and requires varied fixing mechanisms to suit the varied implementational requirements such as, but not limited to, ground fixation (with suitable foundations), wall mounting, integration with external structures e.g., bus-stops, train stations, etc. Throughout the present disclosure, the term "group of digital signages" refers to more than one digital signages that are arranged in a close proximity of each other, and are visible from a common viewing point. Optionally, the selection of the group of digital signages is done manually during installation of the digital signages based on factors such as obstacles (for example, buildings, trees, walls, and the like) that may block visibility between the digital signages. Alternatively, the selection of the group of digital signages is done automatically using Global Positioning System (GPS) data or bluetooth proximity detection.

[0024] Optionally, a distance between any two consecutive digital signages amongst the group of digital signages is within the threshold distance. In this regard, the term "two consecutive digital signages" refers to a pair of digital signages that are arranged next to each other in the group of digital signages. Throughout the present disclosure, the term "threshold distance" refers to a reference value that enables to determine how close or far are any two consecutive digital signages are arranged in the group of digital signages. Subsequently, the distance between any two consecutive digital signages being within the threshold distance implies that said two consecutive digital signages are close enough to each other to be part of the group of digital signages. Optionally, the threshold distance is in a range of 0 to 80 meters. In this regard, the threshold distance may be in the range of 0, 10, 20, 30, 40, 50, 60, or 70 meters up to 10, 20, 30, 40, 50, 60, 70, or 80 meters. The threshold distance ensures that the visual content displayed by the group of signages appears consistent and seamless to viewers, especially when observed from a distance. It also ensures that the signages are close enough to share ambient lighting conditions, making the brightness synchronization more accurate and visually appealing. A technical effect of the distance between any two consecutive digital signages being within the threshold distance is that it is effectively ensured that each of the two consecutive digital signages are in the close proximity of each other. Throughout the present disclosure, the term "corresponding display" refers to an electronic display screen that displays the visual content in said digital signage, transmitted electronically using wired or wireless sources. The corresponding display may be connected to a power supply for its intended continuous use. The corresponding display may comprise a variety of shapes and sizes, for example, but not limited to, 19 inches ("), 32", 41", 55", 65", 72", 75", 85", 98", 100", 105", 210", 420", and the like. Throughout the present disclosure, the term "visual content" refers to any information (such as, advertisements, alerts, news, etc.) to be displayed on the corresponding display of said digital signage.

[0025] Throughout the present disclosure, the term "ambient light" refers to a light that is present in the ambient environment of said digital signage. Throughout the present disclosure, the term "corresponding ambient light sensor" refers to a sensor that detects and measures the amount of ambient light received by said digital signage. Notably, the corresponding ambient light sensor is either attached to, embedded in or closely linked with said digital signage.

[0026] Optionally, the corresponding ambient light sensor is selected from one of: a chromatic sensor, a photoresistor, a pyranometer, a pyrheliometer, a lux meter. In this regard, the term "chromatic sensor" refers to a light sensor that can detect and measure the color properties of the ambient light, specifically the different wavelengths (for example, red, green, blue and the like) of the ambient light within the visible spectrum. Typically, the chromatic sensor is sensitive to various colors of the ambient light. Notably, the chromatic sensor is able to determine the specific color or combination of colors in the ambient light that can be useful in assessment of the ambient light quality. It will be appreciated that the chromatic sensor is used to ensure that the display's color output remains consistent with the ambient lighting conditions, enhancing the visual experience and reducing eye strain by adapting the display's colors to the ambient light. The term "photoresistor" refers to a light-dependent resistor (LDR.) whose resistance value decreases as the intensity of the ambient light increases. Typically, the photoresistor is made from semiconductor materials. Notably, electrical resistance of the photoresistor changes based on the amount of light that hits the surface of the photoresistor. In darkness, the resistance is high, and in bright light, the resistance is low. Moreover, the photoresistor detects the intensity of ambient light and converts the ambient light into a corresponding electrical signal. The term "pyranometer" refers to a sensor that is used to measure total amount of solar radiation, including both direct sunlight and diffuse light scattered by the atmosphere. Typically, the pyranometer is equipped with a glass dome that allows it to capture light from a wide range of angles, providing a comprehensive measurement of solar radiation across the sky. Notably, the output of a pyranometer is usually an electrical signal proportional to the amount of solar radiation received, which can be used to assess the intensity of sunlight in a given location. The term "pyrheliometer" refers to an instrument that is used to measure the intensity of sunlight that is received directly from the sun, excluding any scattered or reflected light. Typically, the pyrheliometer is aligned directly with the sun to capture the direct solar radiation. Notably, the pyrheliometer converts the captured solar radiation into an electrical signal, which is proportional to the intensity of the sunlight. Beneficially, the pyrheliometer is able to optimize display brightness based on the direct sunlight falling on the display, ensuring visibility under intense sunlight conditions. The term "lux meter" refers to an instrument that is used to measure illuminance of the light falling on a surface, in terms of lux (the unit of measurement for the intensity of light as perceived by the human eye). Typically, the lux meter is used to assess the lighting conditions in environments such as offices, manufacturing facilities, and outdoor areas to ensure adequate lighting levels. Moreover, the one of: a chromatic sensor, a photoresistor, a pyranometer, a pyrheliometer, a lux meter provides flexibility in the design of the corresponding ambient light sensor and the corresponding ambient light sensor can be tailored to different environments and application requirements, ensuring optimal performance in diverse lighting conditions. A technical effect of using the one of the aforementioned sensors is that it provides flexibility that leads to better performance, as the most appropriate corresponding ambient light sensor for a given scenario can be selected, enhancing the accuracy of ambient light measurement. Consequently, the display's brightness can be adjusted more precisely, resulting in improved readability and energy efficiency.

[0027] Throughout the present disclosure, the term "communication interface" refers to an interface that is installed or programmed into said digital signage, thus enabling said digital signage to communicate with any other digital signage amongst the group of digital signages or any external server or device. Optionally, the corresponding communication interface is selected from one of: a Bluetooth module, a Wi-Fi® module, a cellular module, an optical module, a wired network module. In this regard, the use of the aforementioned modules as the corresponding communication interface is well-known in the art. A technical effect of the corresponding communication interface being selected from one of the aforementioned module is that the selected corresponding communication interface is well-known, reliable and easily available.

[0028] Notably, the measured amount of ambient light received by said digital signage is transmitted by the corresponding communication interface of said digital signage to the system control unit, which enables the system control unit to know the measured amount of ambient light received by each digital signage from amongst the group of digital signages. Moreover, the control data for said digital signage is received by the corresponding communication interface from the system control unit, to control the brightness of said digital signage. Throughout the present disclosure, the term "system control unit" refers to a processing unit that is responsible to manage and coordinate the brightness of the group of digital signages, such that visual content is displayed on the group of digital signages in an aesthetic and visually pleasing manner. Subsequently, to manage and coordinate the brightness of the group of digital signages, the system control unit determines a brightness level that is appropriate to be set for each digital signage amongst the group of digital signages.

[0029] Optionally, the system control unit is a cloud processing arrangement. In this regard, the term "cloud processing arrangement" refers to a cloud based server having processing capabilities that are required to carry out the steps of the system control unit. Optionally, the cloud processing arrangement comprises a communication interface to exchange information with the corresponding communication interface of each digital signage from amongst the group of digital signages. Notably, the use of the cloud processing arrangement as the system control unit provides a centralized control over the brightness of the group of digital signages without the need for additional processing or hardware resources in the adaptive digital signage system. Moreover, the use of the cloud processing arrangement reduces the processing load on the group of digital signages. A technical effect of the system control unit being the cloud processing arrangement is that the use of the cloud processing arrangement is well-known in the art, thus making the cloud processing arrangement a reliable option to be used as the system control unit.

[0030] Optionally, the cloud processing arrangement is configured to receive the transmitted measured amount of ambient light at predefined time intervals in a range of 1 second to 30 minutes. In this regard, the term "predefined time intervals" refers to fixed periods of time that acts the time windows after which the transmitted measured amount of ambient light is received by the cloud processing arrangement. Optionally, the predefined time intervals are in the range of 1 second, 30 seconds, 1 minute, 5 minutes, 10 minutes, 15 minutes, 20 minutes, 25 minutes to 30 seconds, 1 minute, 5 minutes, 10 minutes, 15 minutes, 20 minutes, 25 minutes, 30 minutes. Notably, the predefined time intervals being in the range of 1 second to 30 minutes is that the predefined time intervals are of an appropriate time period that does not miss on receiving any significant changes in the measured amount of ambient light while reducing the computational load on the cloud processing arrangement at the same time. Moreover, the cloud processing arrangement being configured to receive the transmitted measured amount of ambient light at the predefined time intervals enable the computing processing arrangement to update the data of the measured amount of ambient light stored therein, reflecting the change in the environmental conditions of the group of digital signages. For instance, in outdoor environments where sunlight levels can shift rapidly, shorter time intervals such as 1 to 60 seconds might be used to respond to these changes in real-time, ensuring optimal visibility. On the other hand, in indoor environments where lighting conditions are relatively stable, intervals of 15 to 30 minutes can be set to maintain efficiency while still providing necessary adjustments. A technical effect of the cloud processing arrangement being configured to receive the transmitted measured amount of ambient light at the predefined time intervals in the range of 1 second to 30 minutes is that the computational load on the cloud processing arrangement is effectively reduced as the cloud processing arrangement need not require to receive the transmitted measured amount of ambient light continuously ensuring efficient operation without missing significant changes in lighting conditions.

[0031] Alternatively, the system control unit is a processing unit arranged in a given digital signage amongst the group of digital signages. In this regard, the term "processing unit" refers to a computation device or unit within the digital signage that is responsible for managing and coordinating the operation of the digital signage. Typically, the processing unit may be a microprocessor, a microcontroller, a chip, a central processing unit, or any such suitable arrangement. Throughout the present disclosure, the term "given digital signage" refers to a particular digital signage amongst the group of digital signages whose processing unit is used as the system control unit. Notably, the use of the processing unit of the given digital signage as the system control unit enables to establish a peer-to-peer communication between the group of digital signages to control the brightness of the group of digital signages without the need for a centralized command. Optionally, the corresponding communication interface of the given digital signage is used by the processing unit being implemented as the system control unit to exchange any information with the corresponding communication interface of each digital signage from amongst the group of digital signages. A technical effect is that the adaptive digital signage system effectively works even in scenarios where the cloud processing arrangement is limited or not present. Another technical effect is that a fault tolerance of the adaptive digital signage system is increased as the adaptive digital signage effectively operates even in scenarios where any fault occurs in one or more digital signages from amongst the group of digital signages.

[0032] Notably, the transmitted measured amount of ambient light that are received by the system control unit enable the system control unit to determine the difference in the environment in which each digital signage from amongst the group of digital signages are placed. Subsequently, comparing the received measured amount of ambient light enables the system control unit to determine the difference in the ambient light received by each digital signage from amongst the group of digital signages. Notably, determining the difference between the ambient light received by each digital signage from amongst the group of digital signages enables the system control unit to determine which digital signage from amongst the group of digital signages has the brightness level that is appropriate to be set for each digital signage from amongst the group of digital signages. Throughout the present disclosure, the term "reference digital signage" refers to that digital signage from amongst the group of digital signages selected by the system control unit to have the brightness level (i.e., the brightness of the reference digital signage) that is appropriate to be set for each digital signage amongst the group of digital signages. It will be appreciated that reference digital signage being selected by the system control unit enables the system control unit to use the brightness of the reference digital signage to be used to generate the control data.

[0033] Optionally, the reference digital signage is selected based at least on one of the following: a highest amount of ambient light received by any digital signage amongst the group of digital signages, a lowest amount of ambient light received by any digital signage amongst the group of digital signages, an average amount of ambient light received by each digital signage amongst the group of digital signages. In this regard, for that digital signage which receives the highest amount of ambient light, the brightness of that digital signage is highest as well. Notably, the reference digital signage being selected based on the highest amount of ambient light received by any digital signage amongst the group of digital signages implies that the brightness of the group of digital signages are to be controlled to be equal to the highest brightness of that digital signage receiving the highest amount of ambient light. Similarly, for that digital signage which receives the lowest amount of ambient light, the brightness of that digital signage is lowest as well. Notably, the reference digital signage being selected based on the lowest amount of ambient light received by any digital signage amongst the group of digital signages implies that the brightness of the group of digital signages are to be controlled to be equal to the lowest brightness of that digital signage receiving the lowest amount of ambient light. Similarly, for that digital signage which receives the average amount of ambient light, the brightness of that digital signage is average as well. Notably, the reference digital signage being selected based on the average amount of ambient light received by any digital signage amongst the group of digital signages implies that the brightness of the group of digital signages are to be controlled to be equal to the average brightness of that digital signage receiving the average amount of ambient light. A technical effect is that the adaptive digital signage system is flexible to change the criteria to select the reference digital signage based on different scenarios.

[0034] Throughout the present disclosure, the term "control data" refers to data that is indicative of how much the brightness of the group of digital signages is to be changed based on the brightness of the reference digital signage. Notably, the brightness of the group of digital signages being changed based on the brightness of the reference digital signage implies that the brightness of each digital signage from amongst the group of digital signages is set to be equal to the brightness of the reference digital signage. Subsequently, the control data includes data of a numerical value of the brightness of the reference digital signage for the brightness of the group of digital signages to be controlled based on the brightness of the reference digital signage. The control data to control the brightness of the group of digital signages is provided to the group of digital signages and / or to the reference digital signage. In one embodiment the control data is provided first to the reference digital signage, wherein the reference digital signage is forwarding the control data to the closest first digital signage, and wherein the closest first digital signage is forwarding the control data to the next closest second digital signage. In another embodiment the control data is used selectively based on one of the following: distance from the first digital signage to the reference unit, difference between measured amount of ambient light to the measured amount of ambient light of the reference digital signage, geographical position of the first digital signage. Optionally, the control data is selectively provided to each digital signage based on a comparison of the measured amount of ambient light for each digital signage with the measured amount of ambient light of the reference digital signage, such that: the control data is not transmitted to a digital signage if its measured amount of ambient light is within a predetermined value range of 1% to 15% of the measured amount of ambient light of the reference digital signage; and the control data is transmitted only to those digital signages with measured amount of ambient light levels outside the predetermined value range of the reference digital signage. A technical effect is to ensure that only necessary adjustments are made to synchronize brightness across the group of digital signages thereby conserving data transmission capacity and saving energy. The predetermined value range can be from 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, or 14% up to 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, or 15%.

[0035] Optionally, the brightness of the group of digital signages is controlled in a time period of 1 to 3 minutes. In this regard, the term "time period" refers to a fixed amount of time that is required to control the brightness of the group of digital signages. Optionally, the brightness of the group of digital signages is controlled in a time period of 1, 1.5, 2, 2.5 minutes to 1.5, 2, 2.5, 3 minutes, depending on the specific environmental needs or the system's configuration. Shorter time periods, such as 1 minute, might be necessary in dynamic environments where lighting conditions change frequently, such as outdoor spaces exposed to fluctuating sunlight. In contrast, longer periods, such as 3 minutes, may be sufficient in more stable environments like indoor shopping centers or offices. The technical benefit of controlling the brightness within this specified time range is that it allows the system to react swiftly to changes in ambient lighting without causing abrupt transitions in brightness, which could be distracting to viewers. This gradual and controlled adjustment enhances the overall visual experience by maintaining consistent brightness across the group of digital signages while preventing any visible flickering or sudden changes in brightness. Moreover, this controlled time period ensures that the system avoids unnecessary strain on the hardware components, as rapid brightness adjustments could result in overheating or excessive energy consumption. By spreading the adjustment over a period of 1 to 3 minutes, the system ensures optimal performance while maintaining energy efficiency and prolonging the lifespan of the digital signage components.

[0036] Optionally, the system control unit is further configured to receive a solar radiation forecast data retrieved from a solar radiation map to control the group of digital signages. In this regard, the term "solar radiation forecast data" refers to data that predicts an amount of solar radiation that will be received by a particular area in future instants of time. Optionally the solar radiation forecast data is received for one of: next 1 hour, next 5 hours, next 1 day, next 2 days, and the like. Notably, the solar radiation forecast data is used by the system control unit to predict and determine the ambient light that will be received by each digital signage in the future instants of time. Throughout the present disclosure, the term "solar radiation map" refers to a representation of data that is indicative of the amount of solar radiation received by different regions over a given period of time. Notably, the solar radiation map is analyzed to retrieve the solar radiation forecast data that is received by the system control unit. A technical effect is that the system control unit can effectively determine the amount of ambient light received by each digital signage from amongst the group of digital signages at future instants of time and provide the control data to control the brightness of the group of digital signages in advance for the future instants of time. Rather than relying solely on real-time ambient light sensors, the system can preemptively adjust brightness based on forecasted sunlight changes. This proactive control minimizes disruptions caused by sudden light shifts, providing a smoother viewing experience and ensuring the digital signages are always optimized for upcoming conditions. For instance, if the solar radiation forecast predicts a significant increase in sunlight exposure for a particular region in the next 5 hours, the system can begin adjusting the brightness of the digital signages gradually before the increase occurs. This ensures that the content displayed remains legible without causing discomfort to viewers, especially in environments such as outdoor public spaces or transportation hubs. In addition, the use of forecast data can reduce the system's reliance on real-time sensor data, leading to more stable and energy-efficient brightness adjustments. By planning ahead, the system avoids overloading the processing unit with frequent real-time adjustments, thus optimizing the use of computational resources and extending the lifespan of the hardware components.

[0037] The present disclosure also relates to the method as described above. Various embodiments and variants disclosed above, with respect to the aforementioned adaptive digital signage system, apply mutatis mutandis to the method.

[0038] Optionally, the system control unit is a cloud processing arrangement.

[0039] Optionally, the cloud processing arrangement is configured to receive the transmitted measured amount of ambient light at predefined time intervals in a range of 1 second to 30 minutes.

[0040] Optionally, the system control unit is a processing unit arranged in a given digital signage amongst the group of digital signages.

[0041] Optionally, the corresponding ambient light sensor is selected from one of: a chromatic sensor, a photoresistor, a pyranometer, a pyrheliometer, a lux meter.

[0042] Optionally, the corresponding communication interface is selected from one of: a Bluetooth module, a Wi-Fi module, a cellular module, an optical module, a wired network module. Optionally, a distance between any digital signages amongst the group of digital signages is within a threshold distance.

[0043] Optionally, the method further comprises receiving solar radiation forecast data retrieved from a solar radiation map for controlling the group of digital signages.

[0044] Optionally, the reference digital signage is selected based at least on one of the following: a highest amount of ambient light received by any digital signage amongst the group of digital signages, a lowest amount of ambient light received by any digital signage amongst the group of digital signages, an average amount of ambient light received by each digital signage amongst the group of digital signages.

[0045] Optionally, the brightness level of the group of digital signages is controlled in a time period of 1 to 3 minutes.

[0046] Optionally, the present disclosure provides an adaptive digital signage system comprising a group of digital signages, each of which includes a corresponding digital signage unit, an ambient light sensor, and a communication interface. These components work together to achieve coordinated control over the brightness of the digital signages within the group. Each digital signage is responsible for showing visual content such as advertisements, news, or information. Each digital signage is paired with an ambient light sensor, which continuously measures the light conditions surrounding that specific signage. The sensor could be a chromatic sensor, a photoresistor, or a lux meter, depending on the environmental requirements, and provides real-time feedback on the amount of ambient light. The communication interface in each digital signage allows for data exchange between the digital signages and a central system control unit. Through this interface, the ambient light data is transmitted from each digital signage to the system control unit, which processes this information. The system control unit acts as the brain of the signage group, comparing the ambient light levels received from each digital signage. Based on this comparison, the system control unit selects one signage - referred to as the reference digital signage - as the baseline for brightness control. This reference digital signage is typically the one receiving the highest ambient light, ensuring that all signages in the group can be seen clearly, even in bright outdoor conditions. The technical benefit of this aspect is the synchronization of brightness across all digital signages in the group. By adjusting the brightness to match the reference digital signage, the system ensures uniform visibility, regardless of variations in sunlight or shadows across different signages. This results in a more aesthetically pleasing and less distracting display, which enhances the effectiveness of the displayed content, especially in outdoor environments such as shopping malls or stadiums. For example, if one digital signage is in direct sunlight while another is in a shaded area, the system control unit will adjust the brightness of the shaded signage to match the brighter one, avoiding inconsistency that could cause discomfort to viewers.

[0047] DETAILED DESCRIPTION OF THE DRAWINGS

[0048] Referring to FIG. 1, illustrated is a block diagram of an adaptive digital signage system 100, in accordance with an embodiment of the present disclosure. As shown, the adaptive digital signage system 100 comprises a group of digital signages (shown as a first digital signage 102A, a second digital signage 102B, and a third digital signage 102C), wherein each digital signage comprises a corresponding display 104 configured to display visual content, a corresponding ambient light sensor 106 configured to measure an amount of ambient light received by said digital signage, and a corresponding communication interface 108 configured to transmit the measured amount of ambient light received by said digital signage, and to receive control data. Moreover, the adaptive digital signage 100 comprises a system control unit 110 configured to receive the transmitted measured amount of ambient light, compare the received measured amount of ambient light, select a reference digital signage (for example, the third digital signage 102C) from the group of digital signages 102A-C, based on comparison, and provide the control data to control the brightness of the group of digital signages 102A-C based on the brightness of the reference digital signage 102C.

[0049] Referring to FIG. 2, illustrated is a flowchart depicting steps of a method for controlling an adaptive digital signage system comprising a system control unit and a group of digital signages, wherein each digital signage comprises a corresponding display, a corresponding ambient light sensor, and a corresponding communication interface, in accordance with an embodiment of the present disclosure. At step 202, an amount of ambient light received by each digital signage is measured, using the corresponding ambient light sensor of each digital signage. At step 204, the measured amount of ambient light received by each digital signage is transmitted and control data is received, using the corresponding communicating interface of each digital signage. At step 206, the transmitted measured amount of ambient light is received, by the system control unit. At step 208, the received measured amount of ambient light is compared, using the system control unit. At step 210, a reference digital signage from the group of digital signages is selected based on the comparison, using the system control unit. At step 212, the control data is provided for controlling the brightness of the group of digital signages based on the brightness of the reference digital signage, using the system control unit.

[0050] The aforementioned steps are only illustrative and other alternatives can also be provided where one or more steps are added, one or more steps are removed, or one or more steps are provided in a different sequence without departing from the scope of the claims herein.

[0051] Referring to FIG. 3, illustrated is a timing diagram of an adaptive digital signage system 300 depicting an exchange of information between a group of digital signages 302A-C and a system control unit 304, at different instants of steps (SI, S2, S3, S4, S5, and S6), in accordance with an embodiment of the present disclosure. The steps are detailed as shown below:

[0052] 51 - an amount of ambient light received by each digital signage is measured, using the corresponding ambient light sensor of each digital signage 302A-C,

[0053] 52 - measured amount of ambient light received by each digital signage 302A-C is transmitted to a system control unit 304, using the corresponding communicating interface of each digital signage,

[0054] 53 - the transmitted measured amount of ambient light is received by the system control unit 304,

[0055] 54 - the received measured amount of ambient light is compared, using the system control unit,

[0056] 55 - a reference digital signage from the group of digital signages is selected based on the comparison, using the system control unit,

[0057] 56 - the control data is provided for controlling the brightness of the group of digital signages 302A-C based on the brightness of the reference digital signage, using the system control unit 304.

[0058] Modifications to embodiments of the present disclosure described in the foregoing are possible without departing from the scope of the present disclosure as defined by the accompanying claims. Expressions such as "including", "comprising", "incorporating", "have", "is" used to describe and claim the present disclosure are intended to be construed in a nonexclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural.

Claims

CLAIMS1. An adaptive digital signage system (100, 300), comprising: a group of digital signages (102A-C, 302A-C), wherein each digital signage comprises: a corresponding display (104) configured to display visual content, a corresponding ambient light sensor (106) configured to measure an amount of ambient light received by said digital signage, and a corresponding communication interface (108) configured to transmit the measured amount of ambient light received by said digital signage, and to receive control data; and a system control unit (110, 304) configured to: receive the transmitted measured amount of ambient light, compare the received measured amount of ambient light, select a reference digital signage from the group of digital signages based on the comparison, and provide the control data to control the brightness of the group of digital signages based on the brightness of the reference digital signage.

2. The adaptive digital signage system (100, 300) of claim 1, wherein the system control unit (110, 304) is a cloud processing arrangement.

3. The adaptive digital signage system (100, 300) of claim 2, wherein the cloud processing arrangement is configured to receive the transmitted measured amount of ambient light at predefined time intervals in a range of 1 second to 30 minutes.

4. The adaptive digital signage system (100, 300) of claim 1, wherein the system control unit (110, 304) is a processing unit arranged in agiven digital signage amongst the group of digital signages (102A-C, 302A-C).

5. The adaptive digital signage system (100, 300) of any of the preceding claims, wherein the corresponding ambient light sensor (106) is selected from one of: a chromatic sensor, a photoresistor, a pyranometer, a pyrheliometer, a lux meter.

6. The adaptive digital signage system (100, 300) of any of the preceding claims, wherein the corresponding communication interface (108) is selected from one of: a Bluetooth module, a Wi-Fi module, a cellular module, an optical module, a wired network module.

7. The adaptive digital signage system (100, 300) of any of the preceding claims, wherein a distance between any two consecutive digital signages amongst the group of digital signages (102A-C, 302A-C) is within a threshold distance.

8. The adaptive digital signage system (100, 300) of claim 1, wherein the system control unit (110, 304) is further configured to receive a solar radiation forecast data retrieved from a solar radiation map to control the group of digital signages (102A-C, 302A-C).

9. The adaptive digital signage system (100, 300) of claim 1, wherein the reference digital signage is selected based at least on one of the following: a highest amount of ambient light received by any digital signage amongst the group of digital signages (102A-C, 302A-C), a lowest amount of ambient light received by any digital signage amongst the group of digital signages, an average amount of ambient light received by each digital signage amongst the group of digital signages.

10. The adaptive digital signage system (100, 300) of any of the preceding claims, wherein the brightness of the group of digital signages (102A-C, 302A-C) is controlled in a time period of 1 to 3 minutes.

11. A method for controlling an adaptive digital signage system (100, 300) comprising a system control unit (110, 304) and a group of digital signages (102A-C, 302A-C), wherein each digital signage comprises a corresponding display (104), a corresponding ambient light sensor (106), and a corresponding communication interface (108), wherein the method comprises: measuring an amount of ambient light received by each digital signage, using the corresponding ambient light sensor of each digital signage; transmitting the measured amount of ambient light received by each digital signage and receiving control data, using the corresponding communicating interface of each digital signage; receiving the transmitted measured amount of ambient light, by the system control unit; comparing the received measured amount of ambient light, using the system control unit; selecting a reference digital signage from the group of digital signages based on the comparison, using the system control unit; and providing the control data for controlling the brightness of the group of digital signages based on the brightness of the reference digital signage, using the system control unit.

12. The method of claim 11, wherein the system control unit (110, 304) is a cloud processing arrangement.

13. The method of claim 12, wherein the cloud processing arrangement is configured to receive the transmitted measured amount of ambient light at predefined time intervals in a range of 1 second to 30 minutes.

14. The method of claim 11, wherein the system control unit (110, 304) is a processing unit arranged in a given digital signage amongst the group of digital signages (102A-C, 302A-C).

15. The method of any of the claims 11-14, wherein the corresponding ambient light sensor (106) is selected from one of: a chromatic sensor, a photoresistor, a pyranometer, a pyrheliometer, a lux meter.

16. The method of any of the claims 11-15, wherein the corresponding communication interface (108) is selected from one of: a Bluetooth module, a Wi-Fi module, a cellular module, an optical module, a wired network module.

17. The method of any of the claims 11-16, wherein a distance between any digital signages amongst the group of digital signages (102A-C, 302A-C) is within a threshold distance.

18. The method of claim 11, further comprising receiving solar radiation forecast data retrieved from a solar radiation map for controlling the group of digital signages (102A-C, 302A-C).

19. The method of claim 11, wherein the reference digital signage is selected based at least on one of the following: a highest amount of ambient light received by any digital signage amongst the group of digital signages (102A-C, 302A-C), a lowest amount of ambient light received by any digital signage amongst the group of digital signages, an average amount of ambient light received by each digital signage amongst the group of digital signages.

20. The method of any of the claims 11-19, wherein the brightness level of the group of digital signages (102A-C, 302A-C) is controlled in a time period of 1 to 3 minutes.

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