Digital signage

Abstract

Disclosed is digital signage (100, 300, 400) comprises display (102); dual glass casing (104) comprises inner glass layer (IGL) (106, 202, 306, 410) and outer glass layer (OGL) (108, 308, 404), wherein inner glass is having first face (106A, 306A) and second face (106B) and OGL is having third face (108A, 404A) and fourth face (108B, 308B, 404B); black screen (110, 412) arranged between IGL and OGL comprises opening (112) to allow ambient light (L) to enter IGL; ambient light sensor (114, 200, 302, 402) associated to IGL and measure amount of ambient light received by IGL, and there is formed space (116, 206, 304, 412) in IGL for receiving sensor and display control unit (118) operatively coupled with the display, configured to receive measured amount of ambient light (AL) and adjust brightness level of display based on measured amount of AL.

Description

[0001] DIGITAL SIGNAGE

[0002] TECHNICAL FIELD

[0003] The present disclosure relates to digital signages.

[0004] BACKGROUND

[0005] Conventionally, ensuring optimal visibility under varying ambient light conditions in a digital signage is very critical. However, achieving optimal visibility under varying ambient light conditions is a critical challenge. Generally, the digital signage, used in both outdoor and indoor environments, faces drastic changes in lighting throughout the day, from bright sunlight to dim evening conditions. In many existing solutions, the brightness of the display is dynamically adjusted based on the surrounding ambient light to ensure readability and effectiveness. The aforementioned challenge is further complicated by the need to protect the sensitive display components from environmental elements like dust, moisture, and physical impact, which necessitates the use of protective glass layers. However, in the existing solutions, the layers of dust and moisture can interfere with the accurate detection of ambient light, leading to suboptimal brightness adjustments and reduced display performance.

[0006] Existing solutions attempt to address the aforementioned problem by incorporating ambient light sensors that measure the surrounding light levels and adjust the display brightness accordingly. Typically, the said sensors are placed behind protective layers of glass, which are intended to shield both the sensor and the display from environmental damage. However, the existing solutions have certain limitations, where the protective glass layers, particularly when there are multiple layers, can narrow the sensor's field of view (FOV). The reduced field of view limits the amount of light that reaches the sensor, leading to inaccurate readings of ambient light conditions. To compensate the narrow field view, the display often requires additional processing to correct the sensor data, which increases the complexity and power consumption of the digital signage.

[0007] Moreover, despite these efforts, the existing solutions still have significant drawbacks that limits their effectiveness. Firstly, the additional processing needed to correct the sensor readings not only increases energy consumption but also shortens the lifespan of the display components due to higher operational demands. Secondly, the limited field of view of the sensor, caused by the placement of the sensor, often results in delayed or inaccurate brightness adjustments. This can lead to poor visibility of the display in critical moments, ultimately reducing the overall user experience.

[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 a digital signage to improve the accuracy of ambient light measurement for optimal brightness adjustment. The aim of the present disclosure is achieved by a digital signage 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 accuracy of ambient light measurement and power efficiency of digital signages. Additional aspects, advantages, features, and objects of the present disclosure would be made apparent from the drawings and the detailed description of the illustrative embodiments constructed in conjunction with the appended claims that follow. 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.

[0012] BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG. 1 is a schematic illustration of a digital signage, in accordance with an embodiment of the present disclosure;

[0014] FIG. 2 is a schematic illustration of a perspective view of an ambient light sensor associated to the inner glass layer, in accordance with an embodiment of the present disclosure;

[0015] FIGs. 3A and 3B, are schematic illustrations of different arrangements of a digital signage, in accordance with an embodiment of the present disclosure; and

[0016] FIGs. 4A (conventional implementation) and 4B are schematic illustrations of an exemplary implementation of a digital signage incorporating an ambient light sensor.

[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. In a first aspect, the present disclosure provides a digital signage, comprising: a display; a dual glass casing adapted to cover the display, wherein the dual glass casing comprises an inner glass layer and an outer glass layer, wherein the inner glass is having a first face and a second face, and the outer glass layer is having a third face and a fourth face; a black screen arranged between the inner glass layer and the outer glass layer, wherein the black screen comprises an opening to allow ambient light to enter the inner glass layer; an ambient light sensor associated to the inner glass layer and configured to measure an amount of the ambient light that is received by the inner glass layer, and wherein there is formed a space in the inner glass layer for receiving the sensor, and a display control unit operatively coupled with the display, wherein the system control unit is configured to: receive the measured amount of the ambient light, and adjust a brightness level of the display based on the measured amount of the ambient light.

[0019] The present disclosure provides an aforementioned digital signage that significantly enhances the accuracy of ambient light measurement. Moreover, the display control unit adjusts the display's brightness level dynamically on real-time ambient light data measured by the ambient light sensor. The real-time adjustment ensures that the display remains visible under varying light conditions, whether in bright sunlight or low- light environments. Furthermore, the combination of accurate light measurement and optimized brightness adjustment leads to significant power savings. Furthermore, the dual glass casing provides a protective shield for the display and reduces the risk of environmental damage to the display and the ambient light sensor.

[0020] 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.

[0021] Throughout the present disclosure, the term "display" refers to a display screen that displays visual information transmitted electronically using wired or wireless sources. Notably, the display may be connected to a power supply for its intended continuous use. It will be appreciated that the display is selected from one of Liquid Crystal Display (LCD), In-Plane Switching Liquid Crystal Display (IPS-LCD), Light Emitting Diode (LED) display, Organic Light-Emitting Diode (OLED) display, and Active-Matrix Organic Light-Emitting Diode (AMOLED) display.

[0022] Throughout the present disclosure, the term "dual glass casing" refers to a glass casing enclosure that is designed to cover and protect the display within the digital signage. Typically, the dual glass casing consists of two layers of glass. Notably, the dual glass casing is specifically designed to encase the display, providing both physical protection and environmental isolation while allowing the display to be clearly visible to the user(s). Moreover, the dual glass casing serves as a durable barrier protecting sensitive electronic components of the display from the said external factors, ensuring longevity and reliable operation of the digital signage.

[0023] Optionally, the material of the dual glass casing is one of: glass, tempered glass, plastic, white aluminium. Herein, the term "material" refers to a specific substance or combination of substances that is used to construct the dual glass casing. The term "glass" refers to a transparent or translucent material made from silica (silicon dioxide) and other chemical components. Notably, the glass is used a protective layer to make the dual glass casing. The term "tempered glass" refers to a type of safety glass that is used to make the dual glass casing. Typically, the tempered glass is processed by controlled thermal or chemical treatments. Notably, the tempered glass is high in strength as compared to regular glass. Moreover, the tempered glass has high impact resistance and the ability to withstand harsh environmental conditions, making the tempered glass suitable for outdoor application, where the display is exposed to potential damage. The term "plastic" refers to a synthetic or semi-synthetic material that is made from polymers. Notably, the plastic materials like acrylic or polycarbonate are lightweight, durable and can be molded into various shapes. Moreover, use of the plastic in the dual glass casing can reduce the overall weight of the digital signage, making the digital signage easier to install and handle. The term "white aluminium" refers to an aluminium that is treated, coated or anodized to achieve a white finish material to make the dual glass casing. Typically, the white aluminium enhances the aesthetic appeal of the digital signage and adds a layer of protection against corrosion and environmental wear. A technical effect of specifying the one of: tempered glass, plastic, white aluminium materials, is the creation of the dual glass casing that is robust, durable and suitable for various environmental conditions while ensuring that the display remains clearly visible to the user(s). Throughout the present disclosure, the term "inner glass layer" refers to a glass layer within the dual glass casing that is positioned closer to the display. Notably, the inner glass is the layer of the glass that is situated between the display and the outer glass layer. Moreover, the inner glass protects the display from internal factors such as dust or moisture that may infiltrate the space between the display and the outer glass. The term "outer glass layer" refers to a glass layer within the dual glass casing that is positioned on the exterior side of the dual glass casing, farthest from the display. Typically, the outer glass is transparent or has a high degree of optical clarity, allowing the display to be viewed clearly by the user(s). Notably, the outer glass is the outermost layer of the dual glass casing, serving as the first point of contact with the external environment for the digital signage. Furthermore, the primary function of the outer glass is to protect the display and the inner glass layer from environmental factors such as weather, physical impact, dust, and debris. Furthermore, the outer glass works in conjunction with the inner glass to form the protective enclosure of the dual glass casing around the display.

[0024] Optionally, the inner glass layer and the outer glass layer are fixed together using adhesive means. In this regard, the term "adhesive means" refers to specific methods or materials that are used to attach the inner glass layer and the outer glass layer. Typically, the adhesive means encompasses various types of adhesives, such as glues, resins, or bonding agents, that are specifically formulated to create a strong, durable bond between the inner glass layer and the outer glass layer. Notably, the adhesive means are chosen based on the ability to adhere to the glass withstand environmental stresses and maintain clarity if the bond area is visible. Moreover, the adhesive means is applied as a thin layer between the surfaces of the inner glass layer and the outer glass layer to ensure that the bond is even and that there are no air bubbles or gaps that could compromise the clarity of the display. Furthermore, the adhesive means withstand various environmental stresses, such as changes in temperature, UV exposure, and physical impacts, ensuring the inner glass layer and the outer glass layer remains intact over time. A technical effect of using the adhesive means is that the inner glass layer and the outer glass layer of the dual glass casing remain securely attached, preventing them from shifting or separating. Additionally, the use of adhesive means ensures that the bond does not detract from the appearance of the display, maintaining a clear and unobstructed view.

[0025] Optionally, a thickness of the inner glass layer and the outer glass layer is in a range of 1 to 10 millimeters (mm). In this regard, the thickness of the inner glass layer may be in the range of 1, 2, 3, 4, 5, 6, 7, 8 or 9 mm up to 2, 3, 4, 5, 6, 7, 8, 9 or 10 mm. Similarly, the thickness of the outer glass layer may be in the range of 1, 2, 3, 4, 5, 6, 7, 8 or 9 mm up to 2, 3, 4, 5, 6, 7, 8, 9 or 10 mm. Notably, the inner glass layer having thickness in the range of 1 to 10 millimeters and the outer glass layer having thickness in the range of 1 to 10 millimeters, provides greater strength and resistance to impact for protecting the display. A technical effect of the aforementioned thickness range is that the said thickness offers flexibility for different applications, from lightweight indoor display to the rugged outdoor digital signage, ensuring a balance between protection, weight, and clarity of the digital signage.

[0026] Notably, the term "face" refers to one of the two large, flat surfaces of the glass layer. In this regard, the first face of the inner glass layer is the surface that faces the display of the digital signage. The second face of the inner glass layer is the surface that faces the outer glass layer of the dual glass casing. The first face and second face of the inner glass layer are facing in opposite directions. Herein, the third face of the outer glass layer is a surface that faces the environment. The fourth face of the outer glass layer is a surface that faces inwards towards the inner glass layer. Moreover, the adhesive means, to fix the inner glass layer and the outer glass layer together, are applied on the second face of the inner glass layer and the fourth face of the outer glass layer. Furthermore, the inner glass layer with the first face and the second face provides a primary layer of protection to the display. The first face and the second face of the inner glass layer, and the third face and the fourth face of the outer glass layer are critical for interactions such as adhesion, coatings and the like that may enhance durability and reflectivity of the dual glass casing.

[0027] Throughout the present disclosure, the term "black screen" refers to a dark edge, opaque layer or coating placed between the inner glass layer and the outer glass layer which covers borders of the inner glass layer or the outer glass layer. Optionally, the black screen can be a black silk screen, black border, bezel and the like. It will be appreciated that the black screen facilitates several practical purposes, such as helping protect brittle materials from damage, such as chipped edges on the glass of a display. Optionally a surrounding bezel is made of a secondary material, such as metal, which is added to protect the glass. The term "opening" refers to a window that allows the ambient light to enter the inner glass layer of the dual glass casing. Notably, the opening in the black screen is carefully positioned to allow ambient light to pass through and reach the ambient sensor directly, to ensure precise ambient light measurement while minimizes any external optical disturbances. Optionally, the opening may be of a circular, rectangular, triangle, oval and the like shape. Moreover, dimensions of the opening are precisely tailored to fit the dimensions of the ambient light sensor. The term "ambient light" refers to a light that is present in the ambient environment of the digital signage. The opening in the black screen ensures that only the ambient light from the environment enters therethrough.

[0028] Notably, the term "edge" refers to a boundary or perimeter of the fourth face of the outer glass layer in the dual glass casing. Typically, the edge on the fourth face of the outer glass defines the overall shape of the dual glass casing. Notably, the black screen is either coated or affixed to the edge of the fourth face of the outer glass layer in such a way that the black screen covers the entire perimeter of the fourth face of the outer glass layer except the opening in the black screen. Furthermore, the black screen at the edge on the fourth face of the outer glass layer is able to protect brittle materials from damage, such as chipped edges on the edge on the fourth face of the outer glass layer. Optionally, the black screen is made of a secondary material, such as metal, which is added to protect the fourth face of the outer glass layer.

[0029] Throughout the present disclosure, the term "ambient light sensor" refers to a sensor that detects and measures the intensity of the light present in the surrounding environment. Notably, the ambient light sensor (for example, OPT3001 sensor) is configured to detect and measure the ambient light that reaches the inner glass layer of the dual glass casing. Moreover, the ambient light sensor is either attached to, embedded in or the like closely linked with the inner glass layer of the dual glass casing.

[0030] Optionally, the 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, which can be used to control the brightness of the display of the digital signage. 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 ambient light sensor and the 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: a chromatic sensor, a photoresistor, a pyranometer, a pyrheliometer, a lux meter provides flexibility that leads to better performance, as the most appropriate 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.

[0031] Throughout the present disclosure, the term "amount" refers to a magnitude or intensity of the ambient light that is being received by the inner glass layer of the dual glass casing. Typically, the amount of the ambient light refers to various characteristics of the ambient light, such as, intensity of the ambient light (in lux), spectrum (in case of the chromatic sensor), energy content (measured by the pyranometer or the pyrheliometer). Notably, measurement of the amount of the ambient light is critical to adjust the display's brightness based on the surrounding lighting conditions. The term "space" refers to a defined hollow area within the inner glass layer of the dual glass casing that is designed to receive and accommodate the ambient light sensor. Typically, the space formed in the inner glass layer ensures that the ambient light sensor is securely positioned within the dual glass casing. Advantageously, the space facilitates embedding within or secure mounting of the ambient light sensor on the optimal position of the inner glass layer to measure the ambient light without being obstructed or misaligned. Moreover, the space is formed on the second face of inner glass to receive the ambient light sensor.

[0032] Optionally, the space is a hole or a cavity. Herein, the term "hole" refers to a perforation that extends completely through the inner glass layer of the dual glass casing. Typically, the hole may be of a circular, rectangular, triangle, oval and the like shape. Notably, the hole is created during the manufacturing process of the inner glass layer, using techniques such as drilling, laser cutting, etching and the like. Moreover, dimensions of the hole are precisely tailored to fit the ambient light sensor. The term "cavity" refers to a hollowed-out area within the inner glass layer. Typically, the cavity is an indentation that may extend partially into the inner glass layer without creating a complete opening. Notably, the cavity is intended to house the ambient light sensor, ensuring that the ambient light sensor is securely positioned within the inner glass layer. Furthermore, depending on the specific requirements such as desired placement of the ambient light sensor, the level of protection needed, and the overall design of the digital signage, it may be preferable to have the space on inner glass layer as the hole or the cavity. Furthermore, the hole is extended to the display of the digital signage. The extended hole is used to accommodate leads, wires and the like components to connect the ambient light sensor to the display. Furthermore, ambient light attenuation due to the inner glass layer affects the ratio between the ambient light reaching the digital signage and the ambient light detected by the ambient light sensor. A technical effect of the hole or the cavity is that the ambient light attenuation is reduced, resulting in up to 30% more light reaching the ambient light sensor. Additionally, the hole is chosen to maximize the ambient light sensor's exposure to the ambient light, ensuring more accurate readings.

[0033] Optionally, a field of view of the ambient light sensor is directly proportional to the space formed in the inner glass. Herein, the term "field of view" refers to an observable area where the ambient light sensor can detect or measure the ambient light. Typically, the Field of View (FOV) is the extent of the environment that the ambient light sensor is able to "see" or sense. Moreover, the area or the range within which the ambient light sensor is able to detect the ambient light depends on the shape or the dimensions of the space created within the inner glass of the dual glass casing. If the inner glass has a larger or more open space, the ambient light sensor's field of view will also be larger, allowing the ambient light sensor to detect the ambient light from a broader area. Conversely, if the space is smaller or more restricted, the field of view of the ambient light sensor will be more limited. Notably, the placement of the ambient light sensor in the space formed in the inner glass layer widens the field of view angle for the ambient light sensor to capture more ambient light. It will be appreciated that the field of view of the ambient light sensor can be defined as one of: half field of view (HFOV), where FOV = ±0 and full field of view (FFOV), where FOV = 0. It will be appreciated that the HFOV of the ambient light sensor is ±45°. A technical effect is that by understanding and controlling the relationship between the space of the inner glass and the FOV of the ambient light sensor, the user(s) is able to optimize the ambient light sensor's performance and accuracy based on the detected ambient light.

[0034] Optionally, the ambient light sensor is further in contact with a fourth face of the outer glass layer, wherein the fourth face of the outer glass layer faces the inner glass layer. In this regard, the ambient light sensor is positioned in such a way that the ambient light sensor contacts the fourth face of the outer glass layer. Notably, placement of the ambient light sensor in contact with the fourth face of the outer glass layer ensures that the ambient light sensor is as close as possible to the source of the ambient light. Advantageously, the said setup reduces the potential distortion or attenuation of the ambient light that might occur if the ambient light sensor were positioned further away or if additional materials were present between the ambient light sensor and the outer glass layer of the dual glass casing. Moreover, the fourth face of the outer glass layer that faces the inner glass layer ensures that the ambient light sensor is securely enclosed within the dual glass casing and provides protection and precision in measurement of the ambient light. A technical effect is that the direct contact of the ambient light sensor with the fourth face of the outer glass layer minimizes the number of layers the ambient light must pass through before reaching the ambient light sensor, thereby reducing the potential for signal degradation and ensuring that the ambient light data received by the ambient light sensor is as close to the real ambient conditions as possible. Additionally, the said position reduces the likelihood of erroneous data caused by light scattering or loss that could occur if the ambient light sensor were placed further back from the outer glass layer.

[0035] Optionally, the ambient light sensor is at a distance (D) from the fourth face of the outer glass layer, wherein the fourth face of the outer glass layer is facing towards the inner glass layer. In this regard, the term "distance" refers to a calculated gap between the ambient light sensor and the fourth face of the outer glass layer. The distance (D) from the fourth face may be in a range from 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, 3.2, 3.4, 3.6, 3.8, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0 or 9.5 mm up to 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, 3.2, 3.4, 3.6, 3.8, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5 or 10.0 mm. Notably, the distance (D) between the ambient light sensor and the fourth layer of the outer glass layer is filled with the black screen. It will be appreciated that the black screen just above the ambient light sensor has the opening to allow the ambient light to reach the ambient light sensor. Moreover, the distance between the ambient light sensor and the fourth face of the outer glass layer affects the amount of ambient light reaches the ambient light sensor, the angle of incidence of the ambient light, and the potential for reflection or refraction, all of which influence the accuracy of ambient light detection. A technical effect is that the distance provides a suitable gap to insert the black screen between the second face of the inner glass layer and the fourth face of the outer glass layer, to accommodate necessary design features, such as cushioning to protect the ambient sensor from impact, thermal expansion considerations and the like.

[0036] Optionally, the dual glass casing comprises a hinge mechanism adapted to enable the dual glass casing to attain an open configuration and a closed configuration, and wherein: in the closed configuration, the ambient light sensor is positioned to be inside the hole in the inner glass layer and in contact with the fourth face of the outer glass layer; and in the open configuration, the ambient light sensor is positioned to be outside the hole and in connection with the display.

[0037] In this regard, the term "hinge mechanism" refers to a mechanism that connects the inner glass layer and the outer glass layer, allowing the dual glass casing to be opened and closed like a door, a lid and the like. Typically, the hinge mechanism consists of one or more pivot points that allow the glass layers to rotate relative to each other. Notably, the hinge mechanism allows for easy maintenance, repair, or replacement of internal components without dismantling the entire dual glass casing. The term "open configuration" refers to a configuration state of the dual glass casing when the dual glass casing is open, and the inner glass layer and the outer glass layer are separated. Notably, the open configuration exposes the internal components (such as the ambient light sensor) of the digital signage. In the open configuration, the ambient light sensor is positioned outside the hole in the second face of the inner glass layer and comes in direct contact with the display. It will be appreciated that the ambient light sensor is fixed with the display of the digital signage and the second face of the inner glass layer is placed above the ambient light sensor. The open configuration allows access to the internal components for maintenance or adjustments. The term "closed configuration" refers to a state of the dual glass casing when the dual glass casing, and the inner glass layer and the outer glass layer are positioned closed together, enclosing the ambient light sensor. In the closed configuration, the ambient light sensor is precisely positioned inside the hole in the inner glass layer and is in direct contact with the second face of the outer glass layer. The closed configuration ensures that the ambient light sensor is optimally positioned to measure the ambient light without obstruction or interference. Beneficially, the hinge mechanism is designed to facilitate easy access to the components inside the dual glass casing. When the dual glass casing is open, the ambient light sensor can be accessed or adjusted; when closed, it ensures the ambient light sensor is properly positioned within the dual glass casing. A technical effect is that the closed configuration ensures that the ambient light sensor is securely enclosed and measures the ambient light accurately through the outer glass layer. Additionally, the open configuration enhances the durability and reliability of the dual glass casing by enabling quick and efficient servicing.

[0038] Throughout the present disclosure, the term "display control unit" refers to a display processing unit within the digital signage that is responsible for managing and coordinating the operation of the display in response to input light data. Typically, the display control unit may be a microprocessor, a microcontroller, a on chip control unit, a central processing unit, or any such suitable arrangement. Throughout the present disclosure, the term "operatively coupled" indicates that the display control unit is electronically or wirelessly connect to the display, allowing the display control unit to send and receive signals. Moreover, the said coupling enables real-time adjustments and ensures that the display operates optimally under varying environmental conditions. The term "brightness level" refers to an illuminance emitted by the display of the digital signage that affects how visible and clear the content on the display appears. Moreover, the ambient light sensor sends the signal corresponding to the measured amount of the ambient light. The display control unit receives and processes the measured amount of ambient light from the ambient light sensor. Notably, the display control unit dynamically adjusts the brightness level of the display based on the measured amount of the ambient light. Beneficially, the adjustment of the brightness level of the display based on the measured amount of ambient light facilitates user(s) comfort, energy efficiency, reduce operational cost, prolong the lifespan of the display components, maintains readability and the like.

[0039] DETAILED DESCRIPTION OF THE DRAWINGS

[0040] Referring to FIG. 1, illustrated is a schematic illustration of a digital signage 100, in accordance with an embodiment of the present disclosure. As shown, the digital signage 100 comprises a display 102, a dual glass casing 104. The dual glass casing 104 comprises an inner glass layer 106 and an outer glass layer 108. Optionally, the dual glass casing 104 comprises a hinge mechanism (not shown in figure) adapted to enable the dual glass casing 104 to attain an open configuration and a closed configuration. The inner glass 106 comprises a first face 106A and a second face 106B, and the outer glass layer comprises a third face 108A and a fourth face 108B. Moreover, the digital signage 100 comprises a black screen 110 arranged between the inner glass layer 106 and the outer glass layer 108. The black screen comprises an opening 112 to allow ambient light to enter the inner glass layer 106. Furthermore, the digital signage 100 comprises an ambient light sensor 114 associated to the inner glass layer 106 configured to measure an amount of the ambient light that is received by the inner glass layer 106. Optionally, the ambient light sensor 114 is in contact with the fourth face 108B of the outer glass layer 108. Furthermore, there is formed a space 116 in the inner glass layer for receiving the sensor 114. Optionally, the space 116 is a hole or a cavity. Furthermore, the digital signage 100 comprises a display control unit 118 operatively coupled with the display 102.

[0041] Referring to FIG. 2, illustrated is a schematic illustration of a perspective view of an ambient light sensor 200 associated to the inner glass layer 202, in accordance with an embodiment of the present disclosure. The ambient light sensor is fabricated on a printed circuit board (PCB) 204. Moreover, the ambient light sensor 200 associated to the inner glass layer 202 and configured to measure an amount of the ambient light that is received by the inner glass layer 202. Furthermore, there is a space 206 in the inner glass layer for receiving the sensor 200. Optionally, a field of view of the ambient light sensor 200 is directly proportional to the space 206 formed in the inner glass 202.

[0042] Referring to FIGs. 3A and 3B, illustrated are schematic illustrations of different arrangements of a digital signage 300, in accordance with an embodiment of the present disclosure. As shown, an ambient light sensor 302 is placed in the space 304, formed in the inner glass layer 306 for receiving the ambient light sensor 302. Optionally, the space 304 is a hole or a cavity. Optionally, the ambient light sensor 302 is at a distance (D) from the fourth face 308B of the outer glass layer 308. Moreover, the space 304 is extended to the first face 306A of the inner glass layer 306 to accommodate connecting leads and wires (not shown in figure) to connect the ambient light sensor 302 to the display control unit (not shown in figure).

[0043] Referring to FIG. 4A (conventional implementation) and 4B, illustrated are schematic illustrations of an exemplary implementation of a digital signage 400 incorporating an ambient light sensor 402. As shown, edges of a fourth face 404B of the outer glass layer 404 is covered by the black screen border 406. As shown, the ambient light (L) is received and detected by the ambient light sensor 402 fixed on the PCB 408, depending upon various factors such as the field of view (FOV) (0), thickness (T) of the outer glass layer 404 and the angle of incidence of the ambient light (L). As shown in FIG. 4A, the ambient light sensor 402 is placed behind the first face 410A of the inner glass layer 410, in a conventional arrangement. The said position of the ambient light sensor 402 makes the Field of View FOV (01) of the ambient light sensor 402 nearly 0°, which reduces the amount of the ambient light (L) that reaches to the ambient light sensor 402. The FOV (01) of the ambient light sensor 502 is directly proportional to the opening 416 in the black screen 406 allowing the ambient light (L) to enter the inner glass 410. Moreover, as shown in FIG. 4B, the ambient light sensor 402 is placed in the space 412 created in the inner glass layer 410. The space 412 comprises the ambient light sensor 402 connected with a lead 414 to the PCB 408. Furthermore, the position of the ambient light sensor 402 in the space 412 formed in the inner glass 410 increases the FOV (02) of the ambient light sensor 402 as compared to the FOV (01). The FOV (02) of the ambient light sensor 402 widens the angle of incident (A2) of the ambient light (L) as compared to the angle of incident (Al) in FIG. 4A, that increases the amount of the ambient light (L) that enters from the third face 404A of the outer glass layer 404 to the fourth face 404B of the outer glass layer 404.

Claims

CLAIMS1. A digital signage (100, 300, 400), comprising: a display (102); a dual glass casing (104) adapted to cover the display, wherein the dual glass casing comprises an inner glass layer (106, 202, 306, 410) and an outer glass layer (108, 308, 404), wherein the inner glass is having a first face (106A, 306A, 410A) and a second face (106B), and the outer glass layer is having a third face (108A, 404A) and a fourth face (108B, 308B, 404B); a black screen (110, 406) arranged between the inner glass layer and the outer glass layer, wherein the black screen comprises an opening (112, 416) to allow ambient light (L) to enter the inner glass layer; an ambient light sensor (114, 200, 302, 402) associated to the inner glass layer and configured to measure an amount of the ambient light that is received by the inner glass layer, and wherein there is formed a space (116, 206, 304, 412) in the inner glass layer for receiving the sensor, and a display control unit (118) operatively coupled with the display, wherein the display control unit is configured to: receive the measured amount of the ambient light, and adjust a brightness level of the display based on the measured amount of the ambient light.

2. A display signage (100, 300, 400) of claim 1, wherein the space (116, 206, 304, 412) is a hole or a cavity.

3. A digital signage (100, 300, 400) of any of the preceding claims, wherein the ambient light sensor (114, 200, 302, 402) is further incontact with a fourth face (108B, 308B, 404B) of the outer glass layer (108, 308, 404), wherein the fourth face of the outer glass layer faces the inner glass layer (106, 202, 306, 410).

4. A digital signage (100, 300, 400) of any of the preceding claims, wherein the ambient light sensor (114, 200, 302, 402) is at a distance (D) from the fourth face (108B, 308B, 404B) of the outer glass layer (108, 308, 404), wherein the fourth face of the outer glass layer is facing towards the inner glass layer (106, 202, 306, 410).

5. A digital signage (100, 300, 400) of any of the preceding claims, wherein a material of the dual glass casing (104) is one of: glass, tempered glass, plastic, white aluminium.

6. A digital signage (100, 300, 400) of any of the preceding claims, wherein the inner glass layer (106, 202, 306, 410) and the outer glass layer (108, 308, 404) are fixed together using adhesive means.

7. A digital signage (100, 300, 400) of any of the preceding claims, wherein a thickness (T) of the inner glass layer (106, 202, 306,410) and the outer glass layer (108, 308, 404) is in a range of 1 to 10 millimeters (mm).

8. A digital signage (100, 300, 400) of any of the preceding claims, wherein the ambient light sensor (114, 200, 302, 402) is selected from one of: a chromatic sensor, a photoresistor, a pyranometer, a pyrheliometer, a lux meter.

9. A digital signage (100, 300, 400) of any of the preceding claims, wherein the dual glass casing (104) comprises a hinge mechanism adapted to enable the dual glass casing to attain an open configuration and a closed configuration, and wherein: in the closed configuration, the ambient light sensor (114, 200, 302, 402) is positioned to be inside the hole (114, 206, 304, 412) in theinner glass layer (106, 202, 306, 410) and in contact with the fourth face (108B, 308B, 404B) of the outer glass layer (108, 308, 404); and in the open configuration, the ambient light sensor is positioned to be outside the hole and in connection with the display (102).

10. A digital signage (100, 300, 400) of any of the preceding claims, wherein a field of view (400, 91, 92) of the ambient light sensor (114, 200, 302, 402) is directly proportional to the space (116, 206, 304, 412) formed in the inner glass (106, 202, 306, 410).

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