Display system for displaying product or price information

Abstract

A display system for displaying product and / or price information, comprising at least one electronic display device displaying content represented by content data, a data providing system configured to provide the content data to the at least one electronic display device, and a data providing system for providing the content and / or price information intended to be displayed by the electronic display device. and a detection stage designed to automatically detect defects in content already displayed by the electronic display device, the detection stage being designed to trigger at least one action upon detection of a defect.

Description

[Technical Field]

[0001] The present invention relates to a display system for displaying product or price information. [Background technology]

[0002] Electronic display devices, particularly electronic shelf labels and / or video shelf rails, are used in display systems for a variety of point-of-sale tasks, significantly improving the shopping experience. They can be used, for example, to advertise products, direct customers' attention to products, and present product and price information in real time. However, concerns that unwanted content may be displayed have in the past discouraged many business operators from using electronic display devices. Such unwanted content may arise, for example, when a typographical error occurs when entering product information, resulting in different words being produced than intended, or when the display device or a component of the display system that controls the display device is hacked. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a display system that overcomes the above-mentioned problems. [Means for solving the problem]

[0004] This object is achieved by a display system as claimed in claim 1. The subject of the invention is therefore a display system for displaying product and / or price information, comprising at least one electronic display device for displaying content represented by content data, a data providing system arranged to provide content data to said at least one electronic display device, and a detection stage designed to automatically detect defects in content intended to be displayed by said electronic display device and / or in content already displayed by said electronic display device, said detection stage being designed to activate at least one action in case of detecting a defect.

[0005] The measures according to the invention provide the advantage that the display system automatically checks the content intended to be displayed to detect erroneous or unintentional entries by supermarket employees as well as unauthorized attempts by third parties. All of these events can result in content that should not be displayed in a public place. Therefore, the system can detect content to be avoided before it is displayed. tsu Furthermore, it is also possible to automatically detect and identify faulty displays by checking the content that has already been displayed. In summary, the display system monitors itself for the aforementioned events, thus making it possible to prevent the display of false or inappropriate content on electronic display devices in public places (e.g., retail premises). In particular, these features form the basis for automatically preventing the display of harmful text or images (e.g., pornography, abusive language, terrorism, etc.).

[0006] Further particularly advantageous embodiments and extensions of the invention emerge from the dependent claims and the following description.

[0007] In general, the display system may include a smaller or larger number of electronic display devices. The number of display devices installed may depend on the size of the supermarket and / or the number of products or product categories offered in the supermarket.

[0008] Such electronic display devices may be implemented as so-called electronic shelf labels (ESLs) that are mounted on shelf rails at locations along the shelf rail near the group or item with which they are logically associated. They typically include a low- or near-zero-power display (e.g., implemented using electronic paper or electrophoretic technology) for displaying product and / or price information related to said group or item. The content displayed by this display is provided by content data that is transmitted to the ESL by wireless signal or wired means and typically carries the text and / or images that are subsequently displayed by the display.

[0009] Such electronic display devices can be realized as so-called video rails, which comprise one or more video screens mounted on (or along) the shelf rails or which form the shelf rails themselves. Unlike ESLs, these video rails are equipped with video displays and can therefore display videos and / or virtual electronic shelf labels. The virtual electronic shelf labels can be freely positioned along the video rail's display and can even be superimposed on the video. Again, the content data is provided to the video rail to carry the videos and / or virtual electronic labels that are subsequently displayed by the display.

[0010] Such electronic display devices can also be implemented as smart posters, which allow for context-sensitive content display.

[0011] The content data is created and provided by a data provision system, which can be realized by a cloud-based (software and / or hardware) service or by a local server on the supermarket premises, in both cases software running on each computer architecture that processes the content, human-readable text or images, to be displayed by each electronic display device. This processing generates content data that is encoded in an appropriate data format and provided to the electronic display device.

[0012] Typically, the data providing system is connected to a communications network within the supermarket, which is designed to distribute content data to each electronic display device by wireless signal or wire. Such a communications network may include wireless access points, each designed to communicate wirelessly with a group of electronic display devices. Such a communications network may also preferably include a router, a controller, etc., to which the electronic display devices in the group are connected.

[0013] The data provision system typically includes store management software that maintains a database that stores the overall display plan, shelves, items on the shelves, and the electronic shelf labels associated with each item. Such a data structure is known as a planogram. The data provision system thus addresses each individual electronic display device, enabling it to display individual content that is automatically created or defined by an authorized user of the display system.

[0014] The data provision system may further include one or more computer-based input devices that allow an authorized user of the display system to select or define human-readable text or images intended for display by one or a group of electronic display devices. Such input devices may be, for example, computer terminals, personal digital assistants, mobile phones, tablet computers, etc. These input devices execute user interface software on their computer hardware that is programmed to enable a user to perform appropriate user interaction functions to select or define human-readable text or images and to interact with the store management software. These input devices may also include the hardware and software necessary to provide a representation of the human-readable text or images to the data provision system in digital form, for example, in an intermediate data format or as content data.

[0015] A defect may reflect a variety of events that, if not addressed, could result in the display of undesirable content, including, but not limited to, the following: a) Undesirable content can be, for example, words created by autocorrection of text, but which do not fit the product it describes. b) Objectionable content may also be content that is not suitable for minors. c) Unwanted content may also be content that may be interpreted as racist or terrorist in nature.

[0016] To prevent the display of unwanted content, the detection stage is designed to activate at least one of the following actions:

[0017] a) Sending information about the occurrence of the malfunction to the data provision system, which provides feedback to the data provision system and / or an authorized user of the data provision system (e.g., an operator) about the fact that a malfunction has been detected, allowing the data provision system to automatically adjust the erroneous or problematic content or allowing the operator to manually adjust such content. The event that triggers the detection of the malfunction may be due to the input of a supermarket employee when entering new product and price information into an electronic display device, for example, keying in "sex" instead of "six."

[0018] b) Sending information about the occurrence of a malfunction to a communication device. Such a communication device can be, for example, a computer installed in the supermarket office or a mobile phone of an employee responsible for stocking the shelves. Information about the occurrence of a malfunction can thus be automatically sent to a communication device that can process this information, allowing the responsible person to take appropriate action. This communication device can be a device independent of the data provision system or can be a component of the data provision system. In particular, this communication device can also be an input device of the data provision system.

[0019] c) Updating the content displayed on the electronic display device. This can help prevent content that may damage the company's reputation from being displayed. For example, if a malfunction is detected, the screen can be switched to a blank image or turned off. However, the electronic display device can also switch to displaying a different image and / or text. This image and / or text can, for example, contain a notice that helps employees find the corresponding electronic display device among multiple electronic display devices. For this purpose, data representing this different image and / or text can be sent to the electronic display device if a malfunction is detected. Data representing this different image and / or text can also be stored in advance on the electronic display device. For this purpose, the electronic display device can be designed to display this pre-stored image and / or text when it receives an indication of a malfunction.

[0020] d) Activating an optical or acoustic alarm. On the one hand, this serves to deter operators in the event of an attempted operation being carried out in the field. On the other hand, it gives an indication to the sales staff that a malfunction has occurred. This alarm can be visualized on the communication or input device, respectively. This alarm can be issued from a central point within the supermarket. This alarm can also be issued from an electronic display device, allowing for rapid location of the electronic display device.

[0021] e) Recording the occurrence of faults, so that they can be set in a temporal or spatial context, which subsequently makes it possible to further improve the safety of the system and the reliability of its operation.

[0022] f) Updating a counter that counts the occurrence of defects. Such a counter can count the occurrence of defects and store them as an integer value. The result of this counter depends on the type of defect that occurs and can also be made to reflect the quantity and / or quality of the type of defect that occurs. This allows a score to be stored for each detected defect, which can be used to define the respective action to be taken. This score can be compared to a threshold, and an action can be triggered only if the score exceeds the threshold. The result of this counter or score can also reflect the temporal and spatial context of the occurrence of the defect. For example, if content contains words that may be perceived as obscene, a higher score can be assigned. On the other hand, a certain trigger word combination (e.g., "crazy" and "women") may indicate an association with discriminatory properties, but a higher score can be assigned even if those words are not problematic when used independently or in another combination (e.g., "crazy" and "taste").

[0023] These and further actions may be taken depending on where in the system the failure is detected.

[0024] As already indicated above, it is particularly advantageous if this detection stage is designed to detect defects in the content by analyzing the content with respect to intended and / or unintended content. This makes it possible to clearly define which content is acceptable and which content is not and requires corresponding action. For example, if the content to be analyzed is text, it is possible to easily distinguish between intended and unintended content, for example by comparing the text or words of the content with predefined templates of words or words to be avoided or combinations of such words.

[0025] Additionally, it is advantageous for this detection stage to be designed to identify patterns in the text or image content, which allows distinguishing between intended and unintended content. This allows checking the content to identify individual patterns (components or elements) of that content that require special attention in the detection process to detect defects. An individual element in the context of such text or image content is, for example, content that visualizes "sEx." Such content can hardly be identified by comparison with trigger words, etc. To identify such content, it is advantageous to apply OCR detection (OCR stands for Optical Character Recognition) to the content, for example, to detect harmful words. On the other hand, colorimetry detection can also be used to detect erroneous images.

[0026] Additionally, the detection stage is advantageously designed to distinguish between intended and unintended content by using a predefined lookup table of text elements or phrases or image elements. This lookup table can actually be a database containing a collection of important text elements or phrases or image elements in digital form, which are used in the detection process of the detection stage. This allows for an easy predefinition of undesired content. This in turn allows for different undesired content to be defined for different types of businesses. Thus, flexibility in applying the invention to different business scenarios is ensured.

[0027] As already mentioned, this detection stage is advantageously designed to analyze the content to detect harmful words or harmful and / or false images. This analysis is based on alphanumeric or image elements. It analyzes strings or text or otherwise graphical elements to identify undesirable or unintended content. This also makes it possible to define different undesirable content for different types of businesses.

[0028] In one aspect of the invention, the data provision system comprises an input device designed to define at least part of the content to be displayed by the electronic display device, the input device comprising a detection stage. Thus, the display of undesired content can be addressed even before it is displayed on the electronic display device. In particular, unintended content can be detected immediately during the input process. The operator of the input device then has the means to immediately correct his input if the system allows it. However, it is also possible to block further input after the detection of a malfunction, allowing it again only if authorized by an administrator.

[0029] In another aspect of the present invention, the data provision system includes a server or cloud designed to distribute content data to electronic display devices, and the server or cloud includes a detection stage. This allows content to be checked immediately before it is sent to the electronic display device. Therefore, the display of undesirable content can be addressed before it is sent to the electronic display device. For example, if content is manipulated only after it is entered via an input device or uploaded to the server or cloud, this can be recognized and countermeasures can be taken. In this scenario, it can be assumed that the system has been hacked by a third party, and a master alert can be automatically generated.

[0030] In another aspect of the invention, the electronic display device includes a detection stage. This approach prevents content data from being displayed without the attendant's knowledge, regardless of where it has been manipulated or accidentally created. This measure can be taken independently of other measures to detect malfunctions, but it can also be implemented in combination with the aforementioned measures, providing a last resort if upstream measures fail to detect a malfunction.

[0031] In another aspect of the present invention, the display system includes a camera designed and configured to capture content displayed on at least one electronic display device and generate capture data representative of the captured content, thereby enabling the content actually displayed by the electronic display device to be ascertained. Such a camera can capture a single electronic display device or a number of electronic display devices positioned within the camera's detection field. Such a camera can be mounted, for example, on the ceiling of a supermarket and oriented to capture shelves visible to the camera. Such a camera can be mounted directly on a shelf or even on a shelf rail to capture another shelf or shelf rail positioned on the other side of a shelf aisle.

[0032] In camera-based embodiments of the present invention, the camera includes a detection stage that processes the captured data and automatically detects defects already displayed by the electronic display devices. This allows for the evaluation of the captured data in the immediate vicinity of the electronic display devices where the defects occur. Therefore, to identify a group of electronic display devices where a defect has occurred, it is sufficient to identify the camera in which the defect was identified. Such group identification is based on a planogram, which can record all the positions of the electronic display devices along with the cameras and their viewing angles. To take immediate action (e.g., removing the faulty electronic display device from the shelf), it is sufficient to know the camera's location and its viewing direction or viewing angle. This allows staff to rush to the shelf in question and manually identify the electronic display device that needs to be removed.

[0033] In a further embodiment based on a camera of the present invention, the data provision system is designed to receive image data from the camera and includes a detection stage designed to process the image data and automatically detect defects already displayed by the electronic display device. This allows the high-performance data provision system to simultaneously evaluate image data received from even a large number of cameras. This allows the camera to be relatively simple and inexpensive. Therefore, a large number of electronic display devices can be checked using a relatively small number of inexpensive camera components.

[0034] Advantageously, particularly in camera-based embodiments of the present invention, the detection stage is configured to detect defects by comparing the capture data with the content data. In addition to recognizing possible unintended content, it can also recognize errors in the electronic display device that would otherwise remain undetected. Such errors include, but are not limited to, cracks in the glass / display of the electronic display device, defective pixels in the electronic display device, or simply dirt on the display of the electronic display device.

[0035] Generally, in a further aspect of the invention, the detection stage is designed to select an action based on the number of detected faults, thus allowing for a response tailored to the situation of the display system. For example, if the number of faults detected in a group of electronic display devices exceeds a predefined threshold, a serious event can be assumed, such as a large-scale hacking of the entire system. Therefore, a fast, strong and large-scale action must be taken, which can be one of the actions described above or a combination of these actions.

[0036] Finally, it should be noted that the electronic devices described in the specification of this patent application can be implemented using well-known discrete and / or integrated electronic devices. If an interface is required, one skilled in the art can select and design appropriate interface circuits (transceivers) that enable the communication of data and / or signals. A programmable device can include a microprocessor and several peripheral electronic devices. Such a programmable device can also be implemented using a microcontroller or an application-specific integrated circuit (ASIC), for example. Execution of software routines on such a device provides the computer-implemented functionality discussed herein.

[0037] These and other aspects of the invention can be gleaned from the drawings discussed below.

[0038] In the following, the invention will be explained again by way of examples with reference to the attached drawings, which nevertheless do not limit the scope of the invention. The drawings are schematic drawings. [Brief explanation of the drawings]

[0039] [Figure 1] Schematic diagram of an example of the display system DETAILED DESCRIPTION OF THE INVENTION

[0040] 1 illustrates a display system 1 installed in a supermarket. As an example of shelves 3 installed in the supermarket, only one shelf is illustrated. This shelf 3 is equipped with six electronic display devices 2, which in this embodiment are realized as electronic shelf labels, hereinafter referred to as ESLs 2. These ESLs 2 are attached to shelf rails 3A at positions where products are arranged on the bottom surface 3B of the shelf (not shown).

[0041] The display system 1 further comprises a camera 4 that photographs the shelves 3, the ESLs 2 thereon, and the content displayed on the ESLs 2 to generate photographic data D1 representative of the photographed scene. These photographic data D1 can be used for various store management activities. For clarity, it should be noted that multiple cameras 4 can be installed to monitor multiple different shelves 3 or groups thereof.

[0042] The display system 1 further comprises a data provision system 5, which constitutes a subsystem of the display system 1. The data provision system 5 generates content data D2 representing product and / or price information that is intended to be transmitted to the individual ESLs 2 and displayed by the ESLs 2 under normal circumstances. Typically, the content data D1 is transmitted to the ESLs 2 via a wireless network, the components of which are not shown in Figure 1, as they are essentially known to those skilled in the art.

[0043] The intended content is created using an input device 6, in this case a personal computer located in the supermarket's office. An authorized user (e.g., a supermarket employee) defines the intended content in terms of ESLs 2, and the user's input is received by the input device 6, processed, and forwarded to a cloud-based service 7, where the final content data D1 is created. This cloud-based service 7 is realized by a computer or server farm running software that provides all the functionality typically required by a supermarket operator to manage its ESLs 2. This includes the creation of the individual content data D2 for the individual ESLs 2, the creation and maintenance of digital planograms, or store or floor plans, and may also include other functionality such as payment functions and logistics of goods and ESLs.

[0044] The data providing system 5 can also receive and process the captured data D1 from the camera 4 and use it to identify out-of-stock situations, misplaced items, mismatches between ESL2 and items, and the like.

[0045] In order to prevent the display of unintended content or to reduce the impact of the display of unintended content by the ESL2, the display system 1 further comprises a detection stage 8 designed to automatically detect defects in the content intended to be displayed by the electronic display device, meaning that this content has not yet reached the ESL2 or has already been displayed by the electronic display device 2.

[0046] This detection stage 8 is realized as a software application or routine executed by the input device 6 computer, the cloud-based service 7 computer, or the camera 4 computer, or even by the ESL 2 itself, depending on the actual implementation. Figure 1 illustrates various locations where the detection stage 8 can be implemented.

[0047] If the detection stage 8 is implemented in the input device 6, it can check the user's input and detect unintended content immediately upon entry into the data provision system 5. It can then prevent further processing and propagation of such unintended content within the data provision system 5 and activate an alarm, e.g., provide immediate feedback to the respective user.

[0048] If the detection stage 8 is implemented in a cloud-based service 7, this detection stage 8 may check user input received from the input device 6, which represents content intended to be displayed by the ESL2, at least from the user's perspective, and image data received from the camera 4, which represents content already being displayed by the ESL2.

[0049] On the other hand, the content received from the input device 6 may have been subjected to data manipulation by a third party and may therefore differ from the original content created by the user. This digital manipulation by a third party can be detected by the detection stage 8, which, similar to the scenario described above, can prevent further processing and propagation of such unintended content within the data provision system 5 and activate an alarm, e.g., provide immediate feedback to each user or send the detection information to an administrator.

[0050] On the other hand, the captured data received from the camera 4 can also be checked for defects that may be due to third-party intervention in the content data D2 transmitted from the data provision system 5 to the ESL 2. Again, this digital manipulation by a third party can be detected by the detection stage 8, which, unlike the scenario described above, can now initiate, for example, the deletion of content already displayed by the ESL 2. Again, this detection stage 8 can activate an alarm, for example, giving immediate feedback to the respective user or sending the detection information to an administrator.

[0051] Additionally, the image data received from the camera 4 can also be checked for malfunctions that may be due to electrical or mechanical failure of the ESL 2. In these circumstances, the screen of the relevant ESL 2 can be switched off or blanked depending on the severity of the detected malfunction, as determined by the detection stage 8 using digital image processing. In any case, the detection stage 8 can activate an alarm, for example, forward the error information to the respective user or administrator.

[0052] If the detection stage 8 is implemented in the camera 4, all detection based on the captured data D1 described in the previous two paragraphs can be performed immediately by the camera 4. In one embodiment, the detection process of the detection stage 8 operates autonomously, without any information about the user's original input or the corresponding content data D2. In this embodiment, the detection stage 8 can identify unintended content that was never intended to be displayed in a public place, in other words, clearly unintended content. In another embodiment, the user's original input and / or content data D2 can be provided to the camera 4 and taken into account by the detection process. In this embodiment, the detection stage 8 can identify unintended content that is less obvious, in other words, that may be "hidden between the lines." Depending on the type of anomaly detected, the detection stage 8 can activate an appropriate alarm.

[0053] It should further be mentioned that a detection stage 8 may be incorporated into the ESL 2, which enables the ESL 2 to at least monitor or check the content data D2 it receives from the data provision system 5 itself.

[0054] For the sake of completeness, it is emphasized that the detection stage 8 does not have to be realized in only one of the aforementioned elements. The detection stage 8 can be implemented simultaneously in all these different elements or groups of such elements in the display system 1. The recognition stages 8 located in the various elements of the display system can also check their results against each other to arrive at an overall assessment of the checked content. The recognition stages 8 can also be connected to each other in a daisy-chain configuration along the elements of the display system 1, so that the results of a previous recognition stage 8 can be taken into account by the next detection stage 8 downstream in the direction towards the ESL2. All these measures can enhance the security of the display system 1.

[0055] Finally, it is to be pointed out once again that the figures described in detail above relate only to examples which a specialist can modify in many different ways without departing from the scope of the invention. For the sake of completeness, it is also to be mentioned that the use of the indefinite article "a" or "an" does not mean that the respective feature cannot be present several times. The present application relates to the invention described in the claims, but may also include the following configurations as other aspects. 1. A display system (1) for displaying product and / or price information, At least one electronic display device (2) for displaying content represented by content data (D2); a data providing system (5) configured to provide content data (D2) to the at least one electronic display device (2); a detection stage (8) designed to automatically detect defects in content intended to be displayed by the electronic display device (2) and / or in content already displayed by the electronic display device (2), The display system (1) is designed such that the detection stage (8) initiates at least one action if it detects a malfunction. 2. In the display system (1) described above in 1, The above action is Transmitting information about the occurrence of the malfunction to a data providing system (5); transmitting information regarding the occurrence of the malfunction to a communication device; Updating the content displayed on the electronic display device (2); activating an optical or acoustic alarm; Recording the occurrence of the defect; updating a counter that counts occurrences of defects; A display system (1) comprising at least one of the following: 3. In the display system (1) described in 1 or 2 above, A display system (1) wherein said detection stage (8) is designed to detect defects in the content by analyzing the content with respect to intended and / or unintended content. 4. In the display system (1) described in 3 above, A display system (1) in which the detection stage (8) is designed to identify patterns in the text of the content or images of the content, the identified patterns enabling a distinction between intended and unintended content. 5. In the display system (1) described in 4 above, A display system (1) in which the detection stage (8) is designed to distinguish between intended and unintended content by using a predefined look-up table of text elements or phrases or image elements. 6. In the display system (1) according to any one of 3 to 5 above, A display system (1) in which said detection stage (8) is designed to analyze the content to detect harmful words or harmful and / or false images. 7. In the display system (1) according to any one of 1 to 6 above, A display system (1) in which the data provision system (5) comprises an input device (6) designed to define at least part of the content to be displayed by the electronic display device (2), the input device (6) comprising a detection stage (8). 8. In the display system (1) according to any one of 1 to 7 above, A display system (1) in which the data provision system (5) comprises a server or cloud (7) designed to distribute content data (D2) to electronic display devices (2), the server or cloud (7) comprising a detection stage (8). 9. In the display system (1) according to any one of 1 to 8 above, A display system (1) in which said electronic display device (2) comprises a detection stage (8). 10. In the display system (1) according to any one of 1 to 9 above, A display system (1) comprising a camera (4) designed and configured to photograph content displayed on at least one electronic display device (2) and to generate photographed data (D1) representative of the photographed content. 11. In the display system (1) described in the above item 10, A display system (1) in which the camera (4) is equipped with a detection stage (8) which is designed to process the captured data (D1) and automatically detect defects already displayed by the electronic display device (2). 12. In the display system (1) described in the above item 10, A display system (1) in which the data providing system (5) is designed to receive photographed data (D1), and the data providing system (5) comprises a detection stage (8) designed to process the photographed data (D1) and automatically detect defects already displayed by the electronic display device (2). 13. In the display system (1) according to the above 11 or 12, The display system (1) is configured such that the detection stage (8) detects defects by comparing the captured data (D1) with the content data (D2). 14. In the display system (1) according to any one of 1 to 13 above, A display system (1) wherein said detection stage (8) is designed to select an action based on the number of defects detected.

Claims

1. A display system (1) for displaying product and / or price information, comprising: At least one electronic display device (2) for displaying content represented by content data (D2); a data providing system (5) configured to provide content data (D2) to the at least one electronic display device (2); A defect in the content intended to be displayed by the electronic display device (2), namely: Content that occurs when a typographical error occurs when entering product information, resulting in words different from those intended, or when an electronic display device or a component of a display system that controls an electronic display device is hacked; or a detection stage (8) designed to automatically detect, as undesirable content, words created by the automatic correction of text that do not fit the product they describe, and to block them before their display; The display system (1) is designed such that the detection stage (8) activates at least one action in case of detecting a malfunction.

2. A display system (1) according to claim 1, The above action is Transmitting information regarding the occurrence of the malfunction to a data providing system (5); transmitting information regarding the occurrence of the malfunction to a communication device; Updating the content displayed on the electronic display device (2); activating an optical or acoustic alarm; Recording the occurrence of the defect; updating a counter that counts occurrences of defects; A display system (1) comprising at least one of:

3. A display system (1) according to claim 1 or 2, A display system (1), wherein said detection stage (8) is designed to detect defects in the content by analyzing the content with respect to intended and / or unintended content.

4. A display system (1) according to claim 3, The display system (1) is configured such that the detection stage (8) is designed to identify patterns in the text of the content or in the images of the content, the identified patterns enabling the system to distinguish between intended and unintended content.

5. A display system (1) according to claim 4, A display system (1) in which the detection stage (8) is designed to distinguish between intended and unintended content by using a predefined look-up table of text elements or phrases or image elements.

6. A display system (1) according to any one of claims 3 to 5, A display system (1) in which said detection stage (8) is designed to analyze the content to detect harmful words or harmful and / or false images.

7. A display system (1) according to any one of claims 1 to 6, The display system (1) comprises an input device (6) designed to define at least part of the content to be displayed by the electronic display device (2), the input device (6) comprising a detection stage (8).

8. A display system (1) according to any one of claims 1 to 7, A display system (1) in which the data providing system (5) comprises a server or cloud (7) designed to distribute content data (D2) to electronic display devices (2), the server or cloud (7) comprising a detection stage (8).

9. A display system (1) according to any one of claims 1 to 8, A display system (1) in which said electronic display device (2) comprises a detection stage (8).

10. A display system (1) according to any one of claims 1 to 9, The display system (1) comprises a camera (4) designed and configured to capture content displayed on at least one electronic display device (2) and to generate capture data (D1) representing the captured content.

11. A display system (1) according to claim 10, The display system (1) is provided with a detection stage (8) in which the camera (4) is designed to process the captured data (D1) and automatically detect defects already displayed by the electronic display device (2).

12. A display system (1) according to claim 10, The display system (1) is configured such that the data provision system (5) is designed to receive the photographed data (D1), and the data provision system (5) comprises a detection stage (8) designed to process the photographed data (D1) and automatically detect defects already displayed by the electronic display device (2).

13. A display system (1) according to claim 11 or 12, The display system (1) is configured such that the detection stage (8) detects defects by comparing the captured data (D1) with the content data (D2).

14. A display system (1) according to any one of claims 1 to 13, A display system (1) wherein said detection stage (8) is designed to select an action based on the number of defects detected.

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