Lift cabin for a lift system, and method and control unit for operating an e-paper display

Abstract

An elevator car (3) for an elevator system (1) is described. The elevator car (3) has an e-paper display (21) for displaying information to one or more passengers being transported in the elevator car (3), wherein the e-paper display (21) is arranged in the elevator car (3) such that a display area (23) of the e-paper display (21), on which the information is displayed, is readable by the passengers.

Description

[0001] The present invention relates to an elevator car for an elevator system, and to a method and a control unit for operating an e-paper display. In particular, the invention relates to the elevator car for the elevator system, and to a method and a control unit for operating an e-paper display arranged in the elevator car.

[0002] In elevator systems, at least one elevator car can typically be moved within an elevator shaft between different floors. In a commonly used elevator type, the elevator car is held by a cable-like suspension element. By moving the cable-like suspension element, the elevator car can be moved vertically within the elevator shaft. For this purpose, the suspension elements generally run over a traction sheave, which can be driven in rotation by a drive motor.

[0003] Nowadays, elevator cars are often equipped with screens, especially LCD displays. However, such screens consume relatively high energy and contribute significantly to the heating of the elevator car. Furthermore, information in elevator cars is often presented in a static format, rather than in the form of films, slide shows, or similar, which is why such screens are often technically unnecessary.

[0004] There may therefore be a need for an elevator car with an alternative way of displaying information in the elevator car, which contributes to keeping energy consumption of the elevator car low and heat generation in the elevator car low. There may also be a need for a method and a control unit for operating an e-paper display arranged in an elevator car of an elevator system, wherein the method and the control unit each contribute to keeping energy consumption of the elevator car low and heat generation in the elevator car low.

[0005] Such a need can be met by the subject matter according to one of the independent claims. Advantageous embodiments are defined in the dependent claims and the following description.

[0006] According to a first aspect of the invention, an elevator car for an elevator system is described. The elevator car has an e-paper display for displaying information for one or more passengers transported in the elevator car. The e-paper display is arranged in the elevator car such that a display surface of the e-paper display, on which the information is presented, is readable by the passengers.

[0007] According to a second aspect of the invention, a method for operating the e-paper display arranged in the elevator car of the elevator system is described. The method comprises: receiving at least one signal from an elevator control system of the elevator system; and controlling the e-paper display depending on the signal from the elevator control system, which is generated depending on a control and / or a state of the elevator system.

[0008] According to a third aspect of the invention, a control unit for controlling the e-paper display is described. The control unit is integrated in the elevator car and is designed to communicate with the elevator control system of the elevator system and to control the e-paper display depending on the control and / or the state of the elevator system according to the method explained above and below.

[0009] It should be noted that some of the possible features and advantages of the invention are described herein, on the one hand, with reference to different embodiments of the elevator car and, on the other hand, with reference to different embodiments of the method or control unit. A person skilled in the art will recognize that the features can be combined, adapted, or exchanged as appropriate to achieve further embodiments of the invention.

[0010] Possible features and advantages of embodiments of the invention may be considered, among other things and without limiting the invention, to be based on ideas and findings described below.

[0011] E-paper is primarily known today from e-book readers, which represent a special form of e-paper display. Such e-paper provides a high-contrast image and requires no power as long as the information displayed remains unchanged. Power is only required briefly when the display content or information changes. Therefore, e-paper displays are particularly suitable for displaying relatively infrequently changing information—in other words, static information—in elevator cars, for example, restaurant menus, weather information, resident information, etc. Because the e-paper display has both low energy consumption and low heat generation, the elevator car with the e-paper display contributes to keeping the elevator car's energy consumption and heat generation low.

[0012] According to one embodiment, the e-paper display is integrated into an interior wall of the elevator car, with the display surface exposed to the interior of the elevator car. This can help ensure that the display surface is clearly visible to one or more people in the elevator car and, accordingly, the displayed information is clearly perceivable.

[0013] According to one embodiment, the elevator car has a control unit that is integrated into the e-paper display or that is designed to communicate with the e-paper display, and that is further designed to communicate with the elevator control of the elevator system and to control the e-paper display depending on the control and / or the state of the elevator system. The elevator control can thus be connected to the e-paper display in the elevator car via the control unit. If the control unit is not integrated into the e-paper display, the control unit can be arranged, for example, in the elevator car or at another location in the elevator system. For example, the control unit can be integrated into the elevator control.

[0014] Since changing the display content of the e-paper display takes a relatively long time, compared to an LCD display, for example, and since artifacts can be unintentionally displayed for a short time when changing the display content of the e-paper display, the perception of the changing display content can be perceived as unpleasant by the person concerned. However, the control unit makes it possible to control the e-paper display depending on the control of the elevator system in such a way that the probability is low that the change in the display content will be noticed by one or more of the passengers or at least perceived as disturbing. For example, the control unit can be designed such that it only changes the display content when, for example, there are no passengers in the elevator car or when one or more of the passengers are about to leave the elevator car, for example at the end of a ride.The control unit can determine whether the current situation is suitable for changing the display content based on communication with the elevator control system using one or more signals from the elevator control system.

[0015] If the control unit only communicates with the e-paper display and is not integrated into it, the control unit can be a unit of a control system of the elevator system, which also includes the elevator control system. Accordingly, the elevator control system and the control unit for controlling the e-paper display can be components of the same control system. These components can comprise or consist of hardware and / or software.

[0016] According to one embodiment, the control unit is configured to control the e-paper display in response to receiving an empty signal from the elevator control system, which signal indicates that no person is present in the elevator car, to change the currently displayed content of the e-paper display. Thus, the e-paper display can switch between different display contents when the elevator car is detected as empty.

[0017] Changing the display content depending on the empty signal can easily help prevent one or more people from perceiving the change in the display content. The empty signal can, for example, be a signal representative of the fact that there is no load to be transported, in particular no passenger, in the elevator car. Accordingly, the empty signal can be a binary signal, for example, representative of "empty" or "not empty," or a weight or heat signal representative of the presence of one or more people in the elevator car. Alternatively, the empty signal can, for example, be a signal representative of the fact that the elevator car has not been moved for a period greater than a predetermined time threshold.This signal could also be a binary signal or a signal representative of the period during which the elevator car was not moving. Alternatively, the empty signal could, for example, be a signal representative of the lighting in the interior of the elevator car being switched off. This signal could also be a binary signal or a signal representative of the period during which the lighting was not activated. The e-paper display can be changed immediately after receiving the empty signal or after a predefined delay period following the empty signal.

[0018] For example, the change in display content may be desired when a first predefined condition is met, for example after a predefined period of time has elapsed, when approaching a predefined floor or when transporting or picking up a predefined person, as explained below. However, the change in display content can then also be postponed until a second predefined condition is met, which could be, for example, that the elevator car is empty. For example, the control unit can have a content management system that can request a change in display content and that can ensure, using information from the elevator control system, that the corresponding image change only occurs when there is no one in the elevator car. In addition, a time limit could be set after which the image change is enforced, in particular regardless of whether there are still people in the elevator car or not.

[0019] According to one embodiment, the control unit is configured to, in response to receiving a person signal from the elevator control system, which is representative of a given person being in the elevator car or of the given person commencing a ride in the elevator car, control the e-paper display such that it displays content personalized for the given person. Thus, the e-paper display can be configured to display not only general but also passenger-specific information.For example, if a person calls the elevator car using a personalized key, a personalized key card, or a fingerprint, the elevator control system recognizes which person requested the elevator car and can change the content of the e-paper display on the way to the person so that the person receives personalized information via the e-paper display upon entering the elevator car. The fact that the person is "predefined" means, in particular, that the control unit has information about the person. The circle of predefined persons is therefore usually limited, for example, to people who live or work in the building in which the elevator system is located.

[0020] If passenger-specific images are to be displayed for a ride and it is not possible to change the display content when the elevator car is empty, the corresponding image change can occur, for example, when the elevator car arrives at the floor where the passenger for whom the specific display content is requested will board, so that the display content is displayed correctly when the passenger enters the elevator. In this case, only a passenger just disembarking could see the change in the display content at the end of the corresponding ride, thus minimizing the disruption to the passenger caused by the changing display content.

[0021] According to one embodiment, the control unit is configured, in response to receiving a floor signal from the elevator control system that is representative of the floor to which the person wishes to be transported, to control the e-paper display so that it displays corresponding floor-specific information. The floor-specific information can, for example, be information about one or more residents of the floor and / or about one or more businesses and / or restaurants located on the floor.

[0022] According to one embodiment, the control unit is configured to change the display content of the e-paper display in response to receiving a door signal from the elevator controller, which is representative of a door of the elevator system being opened or closed. This can help ensure that the change in the display is not noticed by one or more people, or at least not perceived as disturbing, since the door of the elevator system is usually opened or closed so that the person(s) can enter or exit the elevator car, and since during this process the person(s) with the most attention are entering or exiting the elevator car. The door of the elevator system can be a door that is permanently arranged on one of the floors on which the elevator system is located. In this case, the door signal can refer to the door on the floor on which the elevator car is currently located.Alternatively, the door may be a door of the elevator car, which is moved vertically together with the elevator car when the elevator car is moved vertically in a lift shaft of the elevator system.

[0023] According to one embodiment, the control unit is designed to control the e-paper display at most once per trip so that it changes the current display content. If one or more passengers are in the elevator car when the display content is changed, changing the display content only once per trip can ensure that passengers only see the unsightly change in the display content once per trip. This can contribute to a high level of travel comfort for passengers. Furthermore, energy consumption of the e-paper display can be kept low by changing the display content a maximum of once per trip. Optionally, the display content can be changed only once per trip when no empty signal is received, thus making it clear that a change in the display content is not possible without the presence of a person who could perceive the change.

[0024] According to one embodiment, the control unit is designed to control the e-paper display such that it changes the current display content at the end of a trip, for example at the end of the current trip. The end of the trip can refer to a short period of time before the elevator car stops, in particular when there are people in the elevator car who are expected to leave the elevator car. Alternatively, the end of the trip can refer to a short period of time after the elevator car stops, in particular when the people in the elevator car leave the elevator car. The control unit can detect whether there are currently people in the elevator car based on a corresponding signal that the control unit can receive from the elevator control. The short period of time can, for example, be between 0 s and 10 s, for example between 2 s and 8 s, for example 5 s.Optionally, the change of the display content can be carried out at the end of the journey when no empty signal is received, and it is thus clear that a change of the display content is not possible without the presence of a person who could perceive the change.

[0025] According to one embodiment, the signal comprises the empty signal of the elevator control, which is representative of there being no person in the elevator car, and in response to receiving the empty signal, the e-paper display is controlled to change the currently displayed display content of the e-paper display.

[0026] According to one embodiment, the signal comprises the person signal of the elevator control, which is representative of the fact that the specified person is in the elevator car or that the specified person is starting the ride in the elevator car, and in response to receiving the person signal, the e-paper display is controlled to display the display content personalized with respect to the specified person.

[0027] According to one embodiment, the signal comprises the floor signal of the elevator control, which is representative of the floor to which the person wishes to be transported, and in response to receiving the floor signal, the e-paper display is controlled to display corresponding floor-specific information.

[0028] According to one embodiment, the signal comprises a door signal of the elevator control, which is representative of a door of the elevator system being opened or closed, and in response to receiving the door signal, the e-paper display is controlled to change the display content of the e-paper display.

[0029] According to one embodiment, the e-paper display is controlled at most once per trip in such a way that it changes the current display content and / or that it changes the current display content at the end of a trip.

[0030] Embodiments of the invention are described below with reference to the accompanying drawings, wherein neither the drawings nor the description are to be construed as limiting the invention. Fig. 1 shows a side sectional view of an elevator system according to an embodiment of the present invention. Fig. 2shows a front view of an embodiment of an inner wall of a lift car of the lift system according to Figure 1 . Fig. 3 shows a flowchart of an embodiment of a method for controlling an e-paper display that is installed in the elevator car according to Figure 2 is arranged.

[0031] The figures are merely schematic and not to scale. The same reference numerals designate the same or equivalent features in the various figures.

[0032] Fig. 1shows a side sectional view of an elevator system 1 according to an embodiment of the present invention. The elevator system 1 comprises an elevator car 3, which can be displaced vertically within an elevator shaft 5 by means of a drive machine 11. For this purpose, the elevator car 3 is held by cable-like support means 9, which run over a traction sheave 13 driven by the drive machine 11 and which also hold a counterweight 7. The elevator system 1 has an elevator control 17 for controlling the drive machine 11. The elevator system 1 also has at least one, normally several, doors 15. In Figure 1 The door 15 is shown as the door of the elevator car 3. Alternatively or additionally, the elevator system 1 may have one, two, or more additional doors (not shown), for example, one on each floor, which are arranged at the exits and entrances of the elevator shaft on the various floors.

[0033] The elevator car 3 has an e-paper display 21 (see Figure 2 ) for displaying information for one or more passengers transported in the elevator car 3, wherein the e-paper display 21 is arranged in the elevator car 3 such that a display surface 23 of the e-paper display 21, on which the information is shown, is readable by the passengers.

[0034] Fig. 2 shows a front view of an embodiment of an inner wall 19 of the elevator car 3 of the elevator system 1 according to Figure 1 The e-paper display 21 is integrated into the interior wall 19, with the display surface 23 of the e-paper display 21 exposed toward an interior of the elevator car 3. The e-paper display 21 can be displayed on the display surface 23 in black and white or in color.

[0035] A control unit 22 for controlling the e-paper display 21 can be integrated into the elevator car 3. In particular, the control unit 22 can be integrated into the e-paper display 21. Alternatively, the control unit 22 can be arranged outside the elevator car 3.

[0036] The control unit 22 is designed to communicate with the elevator control 17 of the elevator installation 1 and to control the e-paper display 21 depending on the control and / or the state of the elevator installation 1, in particular according to the following with reference to Figure 3 explained method. The elevator control 17 can thus be connected to the e-paper display 21 in the elevator car 3 via the control unit 22.

[0037] The control unit 22 can, for example, be configured to control the e-paper display 21 in response to receiving an empty signal from the elevator controller 17, which signal represents that no person is present in the elevator car 3, so that it changes a currently displayed display content of the e-paper display 21. Thus, the e-paper display 21 can switch between different display contents when the elevator car 3 is detected as empty. The empty signal can, for example, be a signal representative of the fact that no load to be transported, in particular no passenger, is present in the elevator car 3. The empty signal can accordingly be a binary signal, which, for example, is representative of "empty" or "not empty," or a weight or heat signal representative of the presence of one or more persons in the elevator car 3.Alternatively, the empty signal can, for example, be a signal representative of the fact that the elevator car 3 has not been moved for a period of time greater than a predetermined time threshold. This signal could also be a binary signal or a signal representative of the period of time during which the elevator car 3 has not been moved. Alternatively, the empty signal can, for example, be a signal representative of the fact that a lighting of the interior of the elevator car 3 is switched off. This signal could also be a binary signal or a signal representative of the period of time during which the lighting was not activated. The e-paper display 21 can be changed immediately after receipt of the empty signal or after a predetermined delay period has elapsed after receipt of the empty signal.

[0038] For example, the change in display content may be desired when a predefined first condition is met, for example after a predefined period of time has elapsed, when approaching a predefined floor, or when transporting or picking up a predefined person, as explained below. However, the change in display content can then also be postponed until a second predefined condition is met, which may be, for example, that the elevator car 3 is empty. For example, the control unit 22 can have a content management system that can request a change in display content and that can ensure, using information from the elevator control 17, that the corresponding image change only occurs when there is no one in the elevator car 3. In addition, a time limit could be set, after which the image change is enforced, in particular regardless of whether there are still people in the elevator car 3 or not.

[0039] The control unit 22 can be configured, in response to receiving a person signal from the elevator controller 17, which is representative of a given person being in the elevator car 3 or of the given person commencing a ride in the elevator car 3, to control the e-paper display 21 such that it displays display content personalized for the given person. Thus, the e-paper display 21 can be configured to display not only general but also passenger-specific information.If, for example, a person calls the elevator car 3 using a personalized key, a personalized key card, or a fingerprint, the elevator control unit 17 recognizes which person requested the elevator car 3 and can change the display content of the e-paper display 21 on the way of the elevator car 3 to the person so that the person receives personalized information via the e-paper display 21 upon entering the elevator car 3. The fact that the person is "predefined" means, in particular, that the control unit has information about the person. The circle of predefined persons is thus generally limited, for example, to persons who live or work in the building in which the elevator system 1 is located.

[0040] If passenger-specific images are to be displayed for a trip and it is not possible to change the display content when the elevator car 3 is empty (for example, because one or more people are in the elevator car 3), the corresponding image change can occur, for example, when the elevator car 3 arrives at the floor at which the passenger for whom the specific display content is requested will board, so that the display content is displayed correctly when the passenger boards the elevator car 3. In this case, only a passenger who is just disembarking could see the change in the display content at the end of the corresponding trip, whereby the disruption to the passenger caused by the changing display content can be kept particularly low.

[0041] The control unit 22 can be configured, in response to receiving a floor signal from the elevator controller 17, which is representative of the floor to which the person wishes to be transported, to control the e-paper display 21 such that it displays corresponding floor-specific information. The floor-specific information can, for example, be information about one or more residents of the floor and / or about one or more businesses and / or restaurants located on the floor.

[0042] The control unit 22 can be configured to change the display content of the e-paper display 21 in response to receiving a door signal from the elevator controller 17, which is representative of the door 15 of the elevator installation 1 being opened or closed. The door 15 of the elevator installation 1 can be a door that is fixedly arranged on one of the floors on which the elevator installation 1 is located. In this case, the door signal can refer to the door on the floor on which the elevator car 3 is currently located. Alternatively, the door 15 can be a door of the elevator car 3 that is displaced vertically together with the elevator car 3 during the vertical displacement of the elevator car 3 in the elevator shaft 5 of the elevator installation 1, for example as shown in Figure 1 shown.

[0043] The control unit 22 can be configured to control the e-paper display 21 at most once per trip so that it changes the current display content. In other words, the e-paper display 21 can be used to display information that changes only once during a trip of the elevator car 3. The trip of the elevator car 3 can, for example, refer to the period in which a specific person is in the elevator car 3, i.e., between the time the same person enters and exits the elevator car. Optionally, the one-time change of the display content per trip can be performed if no empty signal is received, and it is thus clear that a change of the display content is not possible without the presence of a person who could perceive the change.

[0044] The control unit 22 can be configured to control the e-paper display 21 such that it changes the current display content at the end of a trip, for example at the end of the current trip. The end of the trip can refer to a short period of time before the elevator car 3 stops, in particular when there are people in the elevator car 3 who are expected to leave the elevator car 3. Alternatively, the end of the trip can refer to a short period of time after the elevator car 3 stops, in particular when the people in the elevator car 3 leave the elevator car 3. The control unit 22 can detect whether there are currently people in the elevator car 3 based on a corresponding signal that the control unit 22 can receive from the elevator controller 17. The short period of time can be, for example, between 0 s and 10 s, for example between 2 s and 8 s, for example 5 s.Optionally, the change of the display content can be carried out at the end of the journey when no empty signal is received, and it is thus clear that a change of the display content is not possible without the presence of a person who could perceive the change.

[0045] Optionally, an operating and display panel 25 can be arranged on the interior wall 19 of the elevator car 3. The operating and display panel 25 can be arranged, which has a plurality of operating buttons 27 and a digital display 29. The operating buttons 27 can be configured to select different floors and / or initiate an emergency call. The digital display 29 can be configured to display frequently and / or rapidly changing information, such as the floor on which the elevator car 3 is currently located, particularly during a journey of the elevator car 3 from one floor to another. In contrast, the e-paper display 21 can be used to display information that changes rarely and / or slowly, such as calendar and / or time-of-day information, menu information from a restaurant, advertisements from various shops, medical practices, or law firms, resident and / or employee information, weather information, etc.

[0046] Fig. 3shows a flowchart of an embodiment of a method for controlling the e-paper display 21, which is arranged in the elevator car 3 according to Figure 2 is arranged.

[0047] In a step S2, at least one signal from the elevator control 17 of the elevator installation 1 is received, for example from the control unit 22, in particular from a processor of the control unit 22. The signal is generated depending on a control and / or a state of the elevator installation 1, in particular from the elevator control 17.

[0048] In a step S4, the signal can be evaluated and / or analyzed, in particular by the control unit 22. The control unit 22 can then determine and / or generate a control signal for the e-paper display 21 depending on the signal.

[0049] In a step S6, the e-paper display 21 is controlled depending on the signal of the elevator control 17, specifically by means of the control signal that was determined depending on the signal of the elevator control 17.

[0050] The signal from the elevator control 17 includes, for example, the empty signal, which is representative of the fact that there is no person in the elevator car 3. In this case, in response to receiving the empty signal, the e-paper display 21 can be controlled, for example, by means of the control signal, to change the currently displayed display content of the e-paper display 21.

[0051] The signal from the elevator control 17 includes, for example, the person signal, which is representative of the fact that the specified person is in the elevator car 3 or that the specified person is starting the journey with the elevator car 3. In this case, in response to receiving the person signal, the e-paper display 21 can be controlled, for example, by means of the control signal, to display the display content personalized for the specified person.

[0052] The signal from elevator control 17 includes, for example, the floor signal, which is representative of the floor to which the person wishes to be transported. In this case, in response to receiving the floor signal, the e-paper display 21 can be controlled, for example, using the control signal, to display corresponding floor-specific information.

[0053] The signal from elevator control 17 includes, for example, the door signal, which is representative of a door of elevator system 1, for example, door 15, being opened or closed. In this case, in response to receiving the door signal, the e-paper display 21 can be controlled, for example, by means of the control signal, to change the display content of the e-paper display 21.

[0054] The signal from the elevator control 17 can comprise one, two, or more of the aforementioned signals. The aforementioned signals can be superimposed in the signal from the elevator control 17, for example, in the form of one or more modulations, or the signal from the elevator control 17 can comprise the aforementioned signals sequentially.

[0055] Optionally, the e-paper display 21 can be controlled to change the current display content no more than once per ride of the elevator car 3. Alternatively or additionally, the e-paper display 21 can be controlled to change the current display content at the end of a ride.

[0056] Finally, it should be noted that terms such as "having," "comprising," etc., do not exclude other elements or steps, and terms such as "a" or "an" do not exclude a plurality. Furthermore, it should be noted that features or steps described with reference to one of the above embodiments may also be used in combination with other features or steps of other embodiments described above. Reference signs in the claims are not to be considered as limitations.

Claims

1. Elevator car (3) for an elevator system (1), comprising: an e-paper display (21) for displaying information for one or more passengers transported in the elevator car (3), wherein the e-paper display (21) is arranged in the elevator car (3) such that a display surface (23) of the e-paper display (21), on which the information is shown, is readable by the passengers.

2. Elevator car (3) according to claim 1, wherein the e-paper display (21) is integrated into an inner wall (19) of the elevator car (3), wherein the display surface (23) is exposed towards an interior of the elevator car (3).

3. Elevator car (3) according to one of the preceding claims, which has a control unit (22) which is integrated into the e-paper display (21) or which is designed to communicate with the e-paper display (21), and which is further designed to communicate with an elevator control (17) of the elevator installation (1) and to control the e-paper display (21) depending on an activation and / or a state of the elevator installation (1).

4. Elevator car (3) according to claim 3, wherein the control unit (22) is designed to control the e-paper display (21) in response to receiving an empty signal from the elevator control (17), which is representative of there being no person in the elevator car (3), in such a way that it changes a currently displayed display content of the e-paper display (21).

5. Elevator car (3) according to one of claims 3 or 4, wherein the control unit (22) is designed, in response to receiving a person signal from the elevator control (17), which is representative of a predetermined person being in the elevator car (3) or of the predetermined person commencing a journey with the elevator car (3), to control the e-paper display (21) such that it displays a display content personalized with respect to the predetermined person.

6. Elevator car (3) according to one of claims 3 to 5, wherein the control unit (22) is designed to control the e-paper display (21) in response to receiving a floor signal from the elevator control (17) which is representative of the floor to which a person wishes to be transported, so that it displays corresponding floor-specific information.

7. Elevator car (3) according to one of claims 3 to 6, wherein the control unit (22) is designed to change the display content of the e-paper display (21) in response to receiving a door signal from the elevator control (17) which is representative of a door (15) of the elevator installation (1) being opened or closed.

8. Elevator car (3) according to one of claims 3 to 7, wherein the control unit (22) is designed to control the e-paper display (21) at most once per trip in such a way that it changes the current display content.

9. Elevator car (3) according to one of claims 3 to 8, wherein the control unit (22) is designed to control the e-paper display (21) such that it changes the current display content at the end of a journey.

10. A method for operating an e-paper display (21) arranged in an elevator car (3) of an elevator system (1), the method comprising: receiving at least one signal from an elevator control (17) of the elevator system (1), which signal is generated as a function of a control and / or a state of the elevator system (1); and controlling the e-paper display (21) as a function of the signal from the elevator control (17).

11. The method according to claim 10, wherein the signal comprises an empty signal of the elevator control (17) which is representative of there being no person in the elevator car (3), and in response to receiving the empty signal, the e-paper display (21) is controlled to change a currently displayed display content of the e-paper display (21).

12. The method according to one of claims 10 or 11, wherein the signal comprises a person signal of the elevator control (17) which is representative of the fact that a predetermined person is in the elevator car (3) or that the predetermined person is starting a journey with the elevator car (3), and in response to receiving the person signal, the e-paper display (21) is controlled such that it displays a display content personalized with respect to the predetermined person.

13. The method according to any one of claims 10 to 12, wherein the signal comprises a floor signal from the elevator control (17) which is representative of the floor to which a person wishes to be transported, and in response to receiving the floor signal, the e-paper display (21) is controlled such that it displays corresponding floor-specific information, and / or wherein the signal comprises a door signal from the elevator control (17) which is representative of a door (15) of the elevator installation (1) being opened or closed, and in response to receiving the door signal, the e-paper display (21) is controlled such that it changes the display content of the e-paper display (21).

14. Method according to one of claims 10 to 13, wherein the e-paper display (21) is controlled at most once per trip in such a way that it changes the current display content and / or that it changes the current display content at the end of a trip.

15. Control unit (22) for controlling an e-paper display (21) which is integrated in an elevator car (3) and which is designed to communicate with an elevator control (17) of the elevator system (1) and to control the e-paper display (21) as a function of a control and / or a state of the elevator system (1) according to the method according to one of claims 10 to 14.

Images