Apparatus control

Abstract

An apparatus comprising means for: determining that a first portion 102 of a foldable device 100 and a second portion 104 of the foldable device have moved relative to one another to open the foldable

Description

TECHNOLOGICAL FIELD Examples of the disclosure relate to apparatus control. Some relate to controlling an apparatus, such as an electronic device, during opening of the apparatus. BACKGROUND Apparatus, such as electronic devices, can have multiple and / or flexible displays allowing for, for example, foldable devices. It would be desirable to improve or enhance control of a foldable device during, for example, opening of the foldable device from a folded state. BRIEF SUMMARY According to various, but not necessarily all, examples there is provided an apparatus comprising means for: determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device; determining a position of the first portion and second portion of the foldable device; determining a viewing position of a user of the foldable device; determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; and causing display of the perspective corrected image on the second display. In some examples, the perspective corrected image is configured to appear to the user as being displayed on the at least one first display. In some examples, determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another comprises determining sensor data and determining that the first portion and second portion of the foldable device have moved relative to one another based, at least in part, on the sensor data. In some examples, determining a position of the first portion and second portion of the foldable device comprises determining a position of the first portion and second portion of the foldable device in relation to the user. In some examples, determining a position of the first portion and second portion of the foldable device comprises determining a position and orientation of the first portion and second portion of the foldable device. In some examples, determining an orientation of the first portion and second portion of the foldable device comprises using a default orientation or determining sensor data and determining the orientation of the first portion and / or second portion based, at least in part, on the determined sensor data. In some examples, determining a position of the first portion and second portion of the foldable device comprises determining sensor data and determining the position of the first portion and second portion of the foldable device based, at least in part, on the determined sensor data. In some examples, determining a viewing position of a user of the foldable device comprises determining a position of at least one eye of the user based, at least in part, on camera data. In some examples, the foldable device comprises at least one camera on the outer surface of the first portion of the foldable device and / or at least one camera on the inner surface of the second portion of the foldable device, and wherein the camera data is from at least one of the at least one camera on the outer surface of the first portion of the foldable device and / or the at least one camera on the inner surface of the second portion of the foldable device. In some examples, the device comprises a third display located, at least in part, on an inner surface of the first portion of the foldable device, and wherein the means are configured to: determine, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the third display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; and causing display of the perspective corrected image on the third display. In some examples, the means are configured to change content in the perspective corrected image based, at least in part, on the movement of the first portion of the foldable device and the second portion of the foldable device relative to one another to open the foldable device from the folded state. In some examples, changing content in the perspective corrected image comprises changing at least one of: size, orientation, and position of at least one displayed element. In some examples, the means are configured to change content displayed on the at least one first display based, at least in part, on the change in content in the perspective corrected image as the first portion of the foldable device and second portion of the foldable device move relative to one another to open the foldable device from the folded state. According to various, but not necessarily all, examples there is provided a foldable device comprising an apparatus as described herein. In some examples, the foldable device is a mobile telephone. According to various, but not necessarily all, examples there is provided a method comprising: determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device; determining a position of the first portion and second portion of the foldable device; determining a viewing position of a user of the foldable device; determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; and causing display of the perspective corrected image on the second display. In some examples, the perspective corrected image is configured to appear to the user as being displayed on the at least one first display. In some examples, determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another comprises determining sensor data and determining that the first portion and second portion of the foldable device have moved relative to one another based, at least in part, on the sensor data. In some examples, determining a position of the first portion and second portion of the foldable device comprises determining a position of the first portion and second portion of the foldable device in relation to the user. In some examples, determining a position of the first portion and second portion of the foldable device comprises determining a position and orientation of the first portion and second portion of the foldable device. According to various, but not necessarily all, examples there is provided a computer program comprising instructions for causing an apparatus to perform: determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device; determining a position of the first portion and second portion of the foldable device; determining a viewing position of a user of the foldable device; determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; and causing display of the perspective corrected image on the second display. In some examples, the perspective corrected image is configured to appear to the user as being displayed on the at least one first display. In some examples, determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another comprises determining sensor data and determining that the first portion and second portion of the foldable device have moved relative to one another based, at least in part, on the sensor data. In some examples, determining a position of the first portion and second portion of the foldable device comprises determining a position of the first portion and second portion of the foldable device in relation to the user. In some examples, determining a position of the first portion and second portion of the foldable device comprises determining a position and orientation of the first portion and second portion of the foldable device. According to various, but not necessarily all, examples there are provided examples as claimed in the appended claims. According to various, but not necessarily all, embodiments there is provided an apparatus comprising: at least one processor; and at least one memory including computer program code; the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform at least a part of one or more methods disclosed herein. According to various, but not necessarily all, embodiments there is provided an apparatus comprising means for performing at least part of one or more methods disclosed herein. The description of a function should additionally be considered to also disclose any means suitable for performing that function. The description of a feature, such as an apparatus or a component of an apparatus, configured to perform a function, or for performing a function, should additionally be considered to also disclose a method of performing that function. For example, description of an apparatus configured to perform one or more actions, or for performing one or more actions, should additionally be considered to disclose a method of performing those one or more actions. Functions and / or actions described herein can be performed in any suitable way using any suitable method. While the above examples of the disclosure and optional features are described separately, it is to be understood that their provision in all possible combinations and permutations is contained within the disclosure. It is to be understood that various examples of the disclosure can comprise any or all of the features described in respect of other examples of the disclosure, and vice versa. Also, it is to be appreciated that any one or more or all of the features, in any combination, may be implemented by / comprised in / performable by an apparatus, a method, and / or computer program instructions as desired, and as appropriate. BRIEF DESCRIPTION Some examples will now be described with reference to the accompanying drawings in which: FIG. 1 shows an example of the subject matter described herein; FIG. 2A shows another example of the subject matter described herein; FIG. 2B shows another example of the subject matter described herein; FIG. 2C shows another example of the subject matter described herein; FIG. 3 shows another example of the subject matter described herein; FIG. 4 shows another example of the subject matter described herein; FIG. 5 shows another example of the subject matter described herein; FIG. 6 shows another example of the subject matter described herein; FIG. 7 shows another example of the subject matter described herein; FIG. 8 shows another example of the subject matter described herein; FIG. 9 shows another example of the subject matter described herein; FIG. 10A shows another example of the subject matter described herein; FIG. 10B shows another example of the subject matter described herein; and FIG. 11 shows another example of the subject matter described herein. The figures are not necessarily to scale. Certain features and views of the figures can be shown schematically or exaggerated in scale in the interest of clarity and conciseness. For example, the dimensions of some elements in the figures can be exaggerated relative to other elements to aid explication. Similar reference numerals are used in the figures to designate similar features. For clarity, all reference numerals are not necessarily displayed in all figures. DETAILED DESCRIPTION Examples of the disclosure relate to control of an apparatus, for example a device such as an electronic device. Additionally, or alternatively, examples of the disclosure relate to apparatus, methods, and / or computer programs for control of an apparatus, for example a device, such as an electronic device. Additionally, or alternatively, examples of the disclosure relate to control of a foldable apparatus, for example a foldable device, such as a foldable electronic device. In some such examples, the foldable electronic device comprises at least one foldable / flexible display. The following description and drawings describe various examples of an apparatus comprising means for: determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device; determining a position of the first portion and second portion of the foldable device; determining a viewing position of a user of the foldable device; determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; and causing display of the perspective corrected image on the second display; The means can comprise at least one processor; and at least one memory including computer program code; the at least one memory storing instructions that, when executed by the at least one processor, cause performance of at least part of at least one method described herein. As used herein, an apparatus and / or device and / or component for / comprising means for performing one or more actions should also be considered to disclose an apparatus and / or device and / or component configured to perform the one or more actions. Similarly, as used herein, an apparatus and / or device and / or component configured to perform one or more actions should also be considered to disclose an apparatus and / or device and / or component for / comprising means for performing the one or more actions. Description of performing an action should also be considered to disclose causing and / or controlling the action. For example, performing at least one action based, at least in part, on determining a position of the first portion and second portion of the foldable device should also be considered to disclose causing and / or controlling performance of at least one action based, at least in part, on determining a position of the first portion and second portion of the foldable device. FIG. 1 schematically illustrates a foldable device 100. In examples, the foldable device 100 can be considered an apparatus. In some examples, the foldable device 100 is a foldable electronic device, such as a mobile telephone. In the example of FIG. 1, the foldable device 100 comprises a first portion 102 and a second portion 104 that are configured to move relative to one another to open the foldable device 100 from a folded state, and to return the foldable device to the folded state. The first and second portions 102, 104 are moveable, individually and / or together, relative to each other to move the foldable device 100 between a folded sate and at least one unfolded state. Accordingly, movement of the first and / or second portions 102, 104 can change the configuration of the foldable device 100 between a folded state and at least one unfolded state. For example, the first and / or second portions 102, 104 can be moved to move the foldable device 100 between a folded state and an unfolded state. In some examples, the foldable device 100 can have a plurality of folded states and movement of the first and / or second portions 102, 104 can change the configuration of the foldable device 100 between a folded state, of the plurality of folded states, and at least one unfolded state. In examples, a folded state can be considered a closed configuration and / or an unfolded state can be considered an open configuration. In examples, the first portion 102 can be considered a first moveable portion 102 and / or the second portion 104 can be considered a second moveable portion 104. The first and / or second portions 102, 104 can comprise any suitable portion(s) of the foldable device 100. For example, the first and / or second portion 102, 104 can comprise any suitable portion(s) of the foldable device 100 configured to be moved relative to one another to open the foldable device 100 from a folded state. The first and second portions 102, 104 can be different from one another. For example, the first and second portions 102, 104 can have a different shape, and / or size, and / or configuration, and / or functionality and so on. The first and / or second portions 102, 104 can comprise any suitable part of the foldable device 100. In examples, the first portion 102 can be considered a cover portion of the foldable device 100 and / or the second portion 104 can be considered a back portion of the foldable device 100. In examples, a folded state is a state or configuration that the foldable device 100 is configured to be placed in to be stored and / or kept while the foldable device 100 is not in use by a user of the foldable device 100. For example, a folded state can be a state or configuration of the foldable device 100 that the foldable device 100 is configured to be placed in when the foldable device 100 is in a pocket or a bag of a user. In examples, the foldable device 100 is in a folded state when the first and second portions 102, 104 are adjacent to each other and / or are located, at least in part, against each other. For example, the foldable device 100 is in a folded state when the foldable device 100 is folded and the first and second portions 102, 104 at least partially overlie one another. See, for example, FIG. 2A which will be discussed later. In examples, an unfolded state or open configuration of the foldable device 100 is a state or configuration of the foldable device 100 that is not the folded state. In the example of FIG. 1, the foldable device comprises at least one first display 106 located, at least in part, on an inner surface 108 of the second portion 104 of the foldable device 100, and a second display 110 located on an outer surface 112 of the first portion 102 of the foldable device 100. In examples, an inner surface 108 of the foldable device 100 is a surface of the foldable device 100 that is internal and / or not accessible when the foldable device 100 is in the folded state. For example, an inner surface 108 of the second portion 104 can be a surface that is not accessible by a user when the foldable device 100 is in the folded state. For example, an inner surface 108 of the second portion 104 can be a surface that is located adjacent to and / or against the first portion 102 when the foldable device 100 is in the folded state. For example, an inner surface 108 of the first portion 102 can be a surface that is not accessible by a user when the foldable device 100 is in the folded state. For example, an inner surface 108 of the first portion 102 can be a surface that is located adjacent to and / or against the second portion 104 when the foldable device 100 is in the folded state. In examples, an outer surface 112 of the foldable device 100 is a surface of the foldable device 100 that is external and / or accessible when the foldable device 100 is in the folded state. In examples, the at least one first display 106 and / or the second display 110 can form at least a part of one or more surfaces of the foldable device 100. For example, the at least one first display 106 can form at least part of the inner surface 108 of the second portion 104 of the foldable device 100. For example, the second display 110 can form at least a part of the outer surface 112 of the first portion 102. In some examples the at least one first display 106 forms at least a part of an inner surface 108 of the first portion 102 of the foldable device 100. By way of example, reference is made to the examples of FIGs 2A and 2B. FIG. 2A shows an example of a foldable device 100, which can be considered an apparatus. The foldable device 100 in the example of FIG. 2A can be a foldable device 100 as described in relation to FIG. 1. In the example of FIG. 2A, the foldable device 100 is in a folded state 200 and the first and second portions 102, 104 are adjacent one another and overlying one another. In examples, the foldable device 100 is substantially folded in half in the folded state 200. As can be seen in the example of FIG. 2A, the outer surface 112 of the first portion 102 is external, and therefore accessible to a user, when the foldable device 100 is in the folded state 200. In the example of FIG. 2A the foldable device 100 comprises a second display 110 located on, and / or forming at least a part of, the outer surface 112 of the first portion 102 of the foldable device 100. As can be seen in the example of FIG. 2A, the inner surface 108 of the second portion 104 is internal, and therefore inaccessible to a user, when the foldable device 100 is in the folded state 200. Similarly, as can be seen in the example of FIG. 2A, the inner surface 108 of the first portion 102 is internal, and therefore inaccessible to a user, when the foldable device 100 is in the folded state 200. In the example of FIG. 2A the inner surface of the second portion 104 is indicated with 108A and the inner surface of the first portion 102 is indicated with 108B. In the example of FIG. 2A, the foldable device comprises a first display 106 located on, and / or forming at least a part of, the inner surface 108A of the second portion. In the illustrated example, the first display 106 is a foldable / flexible display and is also located on, and / or forms at least a part of, the inner surface 108B of the first portion. Accordingly, in the example of the FIG. 2A, the first display 106 is a continuous, foldable display that is located across at least part of the inner surface 108A of the second portion 104 and at least part of the inner surface 108B of the first portion 102 of the foldable device 100. However, in some examples, the first display does not extend across the two inner surfaces 108A, 108B. FIG. 2B shows an example of the foldable device 100 of the example of FIG. 2A when the first portion 102 and the second portion 104 have been moved relative to one another to open the foldable device 100 from the folded state 200. In the example of FIG. 2B, the first portion 102 has been rotated away from the second portion 104 to open the foldable device 100 from the folded state 200. In the example of FIG. 2B. the inner surfaces 108A, 108B of the second and first portions 104, 102 can be more easily identified. FIG. 2C shows the foldable device 100 of the examples of FIG. 2A and FIG. 2B, when the first portion 102 and the second portion 104 have been moved relative to one another to open the foldable device 100 into a substantially flat state or configuration. In examples, when the foldable device 100 is in the substantially flat state or configuration a user can readily access the inner surfaces 108A, 108B. This means, for example, that a user can readily access the at least one first display 106 when the foldable device 100 is opened from the folded state 200. For example, when the foldable device 100 is opened from the folded state 200 to a substantially flat state (as in the example of FIG. 2C) a user can readily access a first display 106 that is foldable and extends across the inner surfaces 108A, 108B of the second and first portions 104, 102. In examples, the inner surfaces 108A, 108B can be considered inner surfaces due to their location in the folded state 200, even if the inner surfaces 108A, 108B become external / accessible when the foldable device 100 is opened from the folded state 200 (for example as in FIG, 2C). Returning to the example of FIG. 1, as previously described an unfolded state or configuration of the foldable device 100 can be a state or configuration of the foldable device 100 that is not the folded state. In examples, an unfolded state is a state that the foldable device 100 is configured to be placed in to enable a user to access and use the at least one first display 106. For example, an unfolded state or configuration can be a configuration in which at least a part of the at least one display 106 is made available for use by a user compared to the folded state 200. For example, an unfolded state or configuration can be a configuration in which a user can use and / or interact with at least part of the at least one first display 106 that is not accessible when the foldable device 100 is in the folded state 200. The at least one first display 106 and the second display 110 can comprise or be any suitable display or displays. For example, the at least one first display 106 and the second display 110 can comprise any suitable touch sensitive displays. In examples, the at least one first display and / or the second display can comprise or be any suitable foldable / flexible display or displays. For example, the at least one first display 106 can comprise any suitable foldable / flexible display or displays. In some examples, the foldable device 100 comprises a third display located, at least in part, on an inner surface 108B of the first portion 102 of the foldable device. See, for example, the example of FIG. 2B in which the foldable device comprises a third display 202 located and / or forming at least part of the inner surface 108B of the first portion 102 of the foldable device 100. The at least one first display 106 and the third display 202 can be different portions / parts of a single foldable / flexible display that extends across at least part of the inner surfaces 108A, 108B of second and first portions 104, 102. In examples, the at least one first display 106 is a main or primary display of the foldable device 100 and the second display 110 is a secondary display of the foldable device 100. For example, the at least one first display 106 can be larger, and / or have enhanced functionality compared to the second display 110. The second display 110 can be considered a cover display of the foldable device 100, as, in examples, it is located on a cover of the foldable device 100. In examples, a user may start a task, such as reviewing a received message, using the second display 110, and may open the foldable device 100 to access the at least one first display 106 to continue or finish the task, for example composing a response to a received message. In some examples, the foldable device 100 of the example of FIG. 1 comprises at least one sensor 114. The at least one sensor 114 can comprise any suitable sensor or sensors 114. For example, the at least one sensor 114 can comprise any suitable sensor(s) 114 for use in determining that the first portion 102 and second portion 104 have moved relative to one another. For example, the at least one sensor 114 can comprise any suitable sensor(s) 114 for use in determining a position of the first and second portions 102, 104. For example, the at least one sensor 114 can comprise any suitable sensor(s) 114 for use in determining an orientation of the first and second portions 102, 104. In examples, the at least one sensor 114 comprises at least one flex sensor, and / or at least one inertial measurement unit (IMU), and / or at least one accelerometer and so on. In some examples, the foldable device 100 of the example of FIG. 1 comprises at least one camera 116. The at least one camera 116 can comprise any suitable camera or cameras 116. For example, the at least one camera 116 can comprise any suitable camera(s) 116 for use in determining a position of at least one eye of a user of the foldable device 100. For example, the at least one camera 116 can comprise any suitable camera(s) 116 for use in gaze tracking. In some examples, the at least one camera 116 can be located on different parts of the foldable device 100. For example, the foldable device 100 can comprise at least one camera 116 on the outer surface 112 of the first portion 102, and / or at least one camera 116 on the inner surface 108A of the second portion 104, and so on. In some examples, at least one camera 116 can be considered to be at least one sensor 114. That is, in examples, a camera 116 can be considered to be a sensor 114. In some examples, the foldable device 100 of the example of FIG. 1 comprises at least one transceiver 120 configured to transmit and / or receive information using any suitable wired or wireless protocol(s). The at least one transceiver 120 can comprise one or more separate transmitters and receivers. In examples, the foldable device 100 comprises means 118 for processing information, and / or controlling operation of the foldable device 100. The means 118 can be an apparatus. In some examples the means 118 can be a controller, such as a controller 1030 as described in relation to FIGs 10A and 10B. In some examples, the means 118 comprises at least one processor and at least one memory including computer program code, the at least one memory storing instructions that, when executed by the at least one processor, control the apparatus 100. For example, the means 118 can comprise at least one processor and at least one memory including computer program code, the at least one memory storing instructions that, when executed by the at least one processor cause the apparatus to perform at least one or more actions as described herein. As illustrated in the example of FIG. 1, the at least one first display 106, the second display 110, the at least one sensor 114, the at least one camera 116, and the at least one transceiver 120 are operationally coupled to the apparatus 100 and any number of intervening elements can exist between them (including no intervening elements). Additionally, or alternatively, two or more elements of the foldable device 100 illustrated in the example of FIG. 1 can be integrated or combined. For example, the at least one sensor 114 and the at least one camera 116 can be integrated or combined. Additionally, or alternatively, one or more elements of the foldable device 100 illustrated in the example of FIG. 1 can be omitted. For example, the at least one transceiver 120 and / or at least one sensor 114, and / or at least one camera 116 can be omitted. Information / data can be transmitted between the different components 106, 110, 114, 116, 120 and the means 118. For example, control information can be transmitted from the means 118 to one or more of the components 106, 110, 114, 116, 120. For example, the at least one sensor can transmit sensor data 122 to the means 118 and / or the at least one camera 116 can transmit camera data 124 to the means 118. In examples, camera data 124 can be considered to be sensor data 122. In examples, the means 118 are for determining that the first portion 102 of the foldable device 100 and the second portion 104 of the foldable device 100 have moved relative to one another to open the foldable device 100 from a folded state 200. For example, the means 118 can determine that the foldable device 100 has changed from the configuration of FIG. 2A towards the configuration of 2B. In examples, the first portion 102, or the second portion 104, or both the first and second portions 102, 104 can be moved to open the foldable device 100 from a folded state 200. Accordingly, movement of the first and second portions 102, 104 relative to one another to open the foldable device 100 from a folded state 200 can be due to movement of the first portion 102, or the second portion 104, or both the first and second portions 102, 104. In some examples determining that a first portion 102 and a second portion 104 of a foldable device 100 have moved relative to one another comprises determining sensor data 122 and determining that the first portion 102 and second portion 104 of the foldable device 100 have moved relative to one another based, at least in part, on the sensor data 122. The sensor data 122 can come from the at least one sensor 114, and / or can be received via the at least one transceiver 120 from at least one external device. In some examples, the sensor data 122 comprises camera data 124 from the at least one camera 116 and / or camera data 124 received via the at least one transceiver 120 from at least one external device. In examples, the sensor data 122 comprises at least one of: flex sensor data, IMU data, accelerometer data, and camera data 124. In examples, the means 118 are for determining a position of the first portion 102 and second portion 104 of the foldable device 100. For example, the means 118 can be configured to determine the current position of the first portion 102 and the second portion 104 of the foldable device 100. For example, the means 118 can be configured to determine the current position of the first portion 102 and the second portion 104 of the foldable device 100. In some examples, the means 118 are configured to determine an absolute position of the first portion 102 and the second portion 104. In some examples, determining a position of the first portion 102 and second portion 104 of the foldable device 100 comprises determining a position of the first portion 102 and second portion 104 of the foldable device 100 in relation to / relative to the user. For example, the means 118 can be configured to determine at what distance the first portion 102 and second portion 104 of the foldable device are from the user. In some examples, determining a position of the first portion 102 and second portion 104 of the foldable device 100 comprises determining sensor data 122 and determining the position of the first portion 102 and second portion 104 of the foldable device 100 based, at least in part, on the determined sensor data 122. The sensor data 122 can come from the at least one sensor 114, and / or can be received via the at least one transceiver 120 from at least one external device. In some examples, the sensor data 122 comprises camera data 124 from the at least one camera 116 and / or camera data 124 received via the at least one transceiver 120 from at least one external device. In examples, the sensor data 122 comprises at least one of: flex sensor data, IMU data, accelerometer data, and camera data 124. Determining a position of the first portion 102 and second portion 104 of the foldable device 100 can be performed based, at least in part, on sensor data 122, and / or camera data 116, and / or data received via the at least one transceiver 120 from at least one external device. In some examples, determining a position of the first portion 102 and second portion 104 of the foldable device 100 comprises determining a position and orientation of the first portion 102 and second portion 104 of the foldable device 100. Accordingly, the means 118 can be configured to determine at what position and orientation the first portion 102 and second portion 104 are at in relation to the user. In examples, determining a position of the first portion 102 and second portion 104 of the foldable device 100 comprises determining a current position and angle of the at least one first display 106 and second display 110 relative to the user. In some examples, determining an orientation of the first portion 102 and second portion 104 of the foldable device 100 comprises using a default orientation or determining sensor data 122 and determining the orientation of the first portion 102 and / or second portion 104 based, at least in part, on the determined sensor data 122. For example, it can be assumed that the user is holding the foldable device 100 at a certain angle when opening the foldable device 100 from the folded state 200, and therefore a default orientation of the first portion 102 and second portion 104 can be used. In some examples, the sensor data 122 based, at least in part, on which the orientation of the first portion 102 and / or second portion 104 can be determined can come from the at least one sensor 114, and / or can be received via the at least one transceiver 120 from at least one external device. In some examples, the sensor data 122 comprises camera data 124 from the at least one camera 116 and / or camera data 124 received via the at least one transceiver 120 from at least one external device. The sensor data 122 can comprise at least one of: flex sensor data, IMU data, accelerometer data, and camera data 124. In some examples, the means 118 are for determining a viewing position of the user of the foldable device 100. For example, the means 118 can be configured to determine from what position the user of the foldable device 100 is viewing the foldable device 100. A viewing position can be a position from which the user is viewing the at least one first display 106 and the second display 110. For example, a viewing position can be a position from which the user is observing, or looking at, or watching the at least one first display and the second display 106. A viewing position can be a position of a user’s head. A viewing position can be a position of at least one eye of a user. A viewing position can be an average position of the eyes of a user. In some examples, determining a viewing position of a user of the foldable device 100 comprises determining a position of at least one eye of the user based, at least in part, on camera data 124. In examples, the foldable device 100 comprises at least one camera 116 on the outer surface 112 of the first portion 102 of the foldable device 100 and / or at least one camera 116 on the inner surface 108A of the second portion 104 of the foldable device 100, and wherein the camera data 124 is from at least one of the at least one camera 116 on the outer surface 112 of the first portion 102 of the foldable device 100 and / or the at least one camera 116 on the inner surface 108A of the second portion 104 of the foldable device 100. In some examples, the at least one camera 116 on the outer surface 112 of the first portion 102 is used during movement of the first portion 102 up to a point where the at least one camera 116 on the outer surface 112 of the first portion 102 is no longer pointing towards the user. After that point, the at least one camera 116 on the inner surface 108A of the second portion 104 can be used, it will have been revealed by movement of, for example, the first portion 102. However, the at least one camera 116 on the outer surface 112 of the first portion 102 and the at least one camera 116 on the inner surface 108A of the second portion can be used in any suitable combination. Determining a viewing position of a user of the foldable device can comprise gaze tracking. In examples, by being configured to determine a position of the first portion 102 and second portion 104 of the foldable device 100 and to determine a viewing position of a user of the foldable device 100, the means are configured to determine an angle and distance at which the foldable device 100 is located from the user. By way of example, reference is made to the example of FIG. 8. FIG. 8 illustrates an example of a user 800, holding and viewing a foldable device 100. In the example of FIG. 8 the user 800 is holding the first portion 102 and second portion 104 of the foldable device 100 and has opened the foldable device 100 from a folded state 200 to access the at least one first display 106. It can be seen in the example of FIG. 8 that the foldable device 100 is at a position 802 and orientation 804, in relation to the user 800, and the user is viewing the foldable device 100 from a viewing position 806. In the example of FIG. 8, the viewing position 806 is the position of at least one eye of the user 800. Returning to the example of FIG. 1, in examples the means 118 are for determining, based at least in part on the determined positions 802 of the first portion 102 and second portion 104 of the foldable device 100 and the viewing position 806 of the user 800, a perspective corrected image to be displayed on the second display 110, the perspective corrected image configured to be perceived by the user 800 as being in a display plane of the at least one first display 106. The perspective corrected image can be configured so that the content of the perspective corrected image is perceived by the user 800 as being in a display plane of the at least one first display 106. A perspective corrected image can be an image that has been changed / altered to give a predetermined effect when viewed by the user 800 at the determined viewing position 806 and with the position 802 of the foldable device 100. In examples, the perspective corrected image is an image that is changed / altered to appear to the user 800, when viewed from the determined viewing position 806 relative to the determined position 802 of the foldable device 100, to be in a display plane of the at least one first display 106. In examples, one or more features of an image to be displayed on the second display 110 are changed / altered, for example corrected / warped, to create the perspective corrected image. In some examples, the perspective corrected image is configured to appear to the user 800 as being displayed on the at least one first display 106. In some examples, the perspective corrected image is configured so that the content of the perspective corrected image appears to the user 800 as being displayed on the at least one first display 106. The perspective corrected image can be configured to appear to the user 800 as being displayed on the at least one first display 106 when the foldable device 100 is in a substantially flat state, see for, example, FIG. 2C. Accordingly, when the perspective corrected image is displayed on the second display 110 it appears to the user 800 that the user 800 is viewing the at least one first display 106 rather than the second display 110. For example, the perspective corrected image can be configured to such that the first portion 102 of the foldable device 100 appears transparent or see through to the user 800. For example, the perspective corrected image can be configured, for example corrected / warped, for the user so that the second display 110 appears as a transparent window to the at least one first display 106. The display plane of the at least one first image 106 can be a plane on which the at least one first display 106 displays content. The display plane of the at least one first image 106 can be a plane defined by a surface of the at least one first display 106. The display plane of the at least one first image 106 can be a plane defined by the inner surface 108A of the second portion 104 of the foldable device 100. By way of example, reference is made to the example of FIG. 3. FIG. 3 illustrates a series of examples, A to E, of a foldable device 100 from a top-down view. The foldable device 100 can be a foldable device 100 as described in relation to FIG. 1. In FIG. 3, the main viewing direction, that is the direction of the user 800, is shown by the arrows 302. The examples A to E in FIG. 3 show examples showing a display plane 300 of the at least one first display 106. In the examples of FIG. 3, the dashed line 300 shows the display plane of the at least one first display 106. The dashed line 300 also indicates the perceived perspective image or see-through image for the user 800 when the user 800 views the perspective corrected image. In part A of FIG. 3, the foldable device 100 is in the folded state 200. The user can only see the second display 110. The display plane 300 of the at least one first display 106 is coincident with the inner surface 108A of the second portion 104. In part B of FIG. 3, the foldable device 100 is partially opened by movement of the first portion 102. The perspective corrected image is configured to be perceived as being on a portion of the at least one first display 106, in the display plane 300. Another portion of the at least one display 106 can be directly seen by the user 800, indicated by the solid line 304, which is also in the display plane 300 of the at least one first display 106. The content of the perspective corrected image can be configured to match with the content displayed on the at least one first display 106 so that it appears to the user 800 that that user 800 is looking through the first portion 102 and directly at the at least one first display 106. In part C of FIG. 3, the first portion 102 is at substantially a right angle to the second portion 104, and so the user 800 can no longer see the second display 106. The user 800 can see the at least on first display 106. In part D of FIG. 3, the first portion 102 has been moved to open the foldable device 100 further, and the user can now see the third display 202 on the inner surface 108B of the first portion 102. A perspective corrected image is displayed on the third display 202, and the user 800 perceives the image / content of the image to be in the display plane 300 of the at least one first display 106. In part E of FIG. 3, the foldable device 100 is in a substantially flat state, and the display planes of the at least one first display 106 and the third display 202 are substantially co-planar. The foldable device 100 is opened so that the user 800 can readily access the at least one first display 106. However, during opening of the foldable device 100 the user 800 has already perceived content as being displayed on / on the display plane 300 of the at least one first display 106 and can therefore more easily and effectively begin to interact with the at least one first display 106 once the foldable device is opened. FIG. 4 is similar to the example of FIG. 3, and shows further examples A to F. It can be seen from, for example, parts C, D, and F of the example of FIG. 4, that the display plane 300 of the at least one first display 106 can be the display plane 300 of the at least one first display 106 when the at least one first display 106 is in a substantially flat state / configuration. Accordingly, in examples, a perspective corrected image can be displayed on the at least one first display 106. In the shown examples of FIGs 3 and 4, the perspective corrected image is configured to be perceived by the user 800 as being behind the actual display / screen on which the perspective corrected image is displayed. However, in examples, the perspective corrected image can be configured to be perceived by the user 800 to be in front of the actual display / screen on which the perspective corrected image is displayed, for example of the foldable device 100 folds more than 180 degrees. Returning to the example of FIG. 1, in some examples the means are configured to cause or control display of the perspective corrected image on the second display 110. Consequently, FIG. 1 illustrates an apparatus comprising means for: determining that a first portion 102 of a foldable device 100 and a second portion 104 of the foldable device 100 have moved relative to one another to open the foldable device 100 from a folded state 200, the foldable device 100 comprising at least one first display 106 located, at least in part, on an inner surface 108A of the second portion of the foldable device 100, and a second display located on an outer surface 112 of the first portion 102 of the foldable device 100; determining a position 802 of the first portion 102 and second portion 104 of the foldable device 100; determining a viewing position 806 of a user 800 of the foldable device 100; determining, based at least in part on the determined positions 802 of the first portion 102 and second portion 104 of the foldable device 100 and the viewing position 806 of the user 800, a perspective corrected image configured to be perceived by the user 800 as being in a display plane 300 of the at least one first display 106; and causing display of the perspective corrected image on the second display 110. As previously described, in some examples the foldable device 100 comprises a third display 202 located, at least in part, on an inner surface 108B of the first portion 102 of the foldable device 100. In some examples, the means 118 are configured to determine, based at least in part on the determined positions 802 of the first portion 102 and second portion 104 of the foldable device 100 and the viewing position 806 of the user 800, a perspective corrected image to be displayed on the third display 202, the perspective corrected image configured to be perceived by the user 800 as being in the display plane 300 of the at least one first display; and causing display of the perspective corrected image on the third display 202. For example, when the foldable device 100 has been opened so that the second display 110 is no longer visible to the user 800, the third display 202 can be used. See, for example, part D of FIG. 3. See also FIG. 7 which will be discussed later. In examples, the means 118 are configured to repeatedly determine a position 802 of the first portion 102 and second portion 104 of the foldable device 100; determine a viewing position 806 of a user 800 of the foldable device 100; determine, based at least in part on the determined positions 802 of the first portion 102 and second portion 104 of the foldable device 100 and the viewing position 806 of the user 800, a perspective corrected image configured to be perceived by the user 800 as being in a display plane 300 of the at least one first display 106; and cause display of the perspective corrected image on the second display 110. For example, the means 118 can be configured to update the perspective corrected image and / or content of the perspective corrected image as the positions of the first and second portions 102, 104 change. For example, the perspective corrected image and / or content of the perspective corrected image can be updated as the foldable device 100 is opened by a user 800. In this way, the user 800 will continue to perceive the perspective corrected image / content of the perspective corrected image as being in a display plane 300 of the at least one first display 106 / as being displayed on the at least one first display 106. In some examples, the means 118 are configured to change content in the perspective corrected image based, at least in part, on the movement of the first portion 102 of the foldable device 100 and the second portion 104 of the foldable device 100 relative to one another to open the foldable device 100 from the folded state 200. See, for example, FIG. 11 which will be discussed later. For example, one or more user interface elements can be shifted or scaled to better fit the contents on the given display estate. In examples, changing content in the perspective corrected image comprises changing at least one of: size, orientation and position of at least one displayed element. In some examples, the means 118 are configured to change content displayed on the at least one first display 106 based, at least in part, on the change in content in the perspective corrected image as the first portion 102 of the foldable device 100 and second portion 104 of the foldable device 100 move relative to one another to open the foldable device 100 from the folded state 200. For example, the content displayed on the at least one first display 106 can be changed in the same way as the content in the perspective corrected image to maintain the perception by the user 800 that the user 800 is looking at the at least one first display 106 through a transparent window as the foldable device 100 is opened from the folded state 200. Again, this enables the user 800 to already view content as being displayed on / on the display plane 300 of the at least one first display 106 and can therefore more easily and effectively begin to interact with the at least one first display 106 once the foldable device 100 is opened. FIG. 5 shows an example scenario. FIG. 5 illustrates a series of examples, A to D, of a foldable device 100. The foldable device 100 can be a foldable device 100 as described in relation to FIG. 1. The example of FIG. 5 shows opening of a foldable device 100 from a folded state 200 and example content shown on the displays 106, 110 during opening of the foldable device. In part A of FIG 5, the foldable device 100 is in the folded state 200 and the content displayed on the second display 110 is the content of the at least one display 106. In part B of FIG. 5, the first portion 102 has been moved to open the foldable device 100 from the folded state 200. A perspective corrected image 500 of the content 502 of the at least one display 106 has been determined and is displayed on the second display 110. As can be seen in part B of the example of FIG. 5, this results in the first portion 102 appearing to be see-through from the perspective of the user 800, and therefore the user 800 can see and become aware of the content of the at least one first display 106 as the foldable device 100 is opened, allowing the user 800 to quickly and efficiently interact with the at least one display 106 when the foldable device 100 is opened. The perspective corrected image 500 used in the example of part B of FIG, 5 is shown in part C of FIG. 5. In part D of FIG. 5, the foldable device 100 has been opened and is in a substantially flat state, enabling the user 800 to interact with the at least one first display 106. However, the user 800 has remained aware of the content of the at least one first display 106 during opening of the foldable device 100 and therefore the user 800 is already aware of, for example, the location of different elements on the user interface of the at least one first display 106 and can therefore efficiently and quickly begin interaction with the at least one first display 106. FIG. 11 shows an example scenario. FIG. 11 is similar to the example of FIG. 5. However, in the example of FIG. 11, as the foldable device 100 is opened from the folded state 200 the user interface element positions are changed to better fit the different aspect ratios of the displays 110, 106. In the example of FIG. 11, text in the content 502 is scaled up while the icons are being shifted, rotated, and scaled. In the example of FIG. 6 the movements are animated as the foldable device 100 is opened from the folded state 200. Again, as can be seen in part B of the example of FIG. 6, this results in the first portion 102 appearing to be see-through from the perspective of the user 800 as the content of the displayed images is changed, and therefore the user 800 can see and become aware of the content of the at least one first display 106 as the foldable device 100 is opened, allowing the user 800 to quickly and efficiently interact with the at least one display 106 when the foldable device 100 is opened. FIG. 6 shows an example scenario. FIG. 6 is similar to the examples of FIGs 5 and 11. In the example of FIG. 6: User 800 is browsing video streaming service offering on the cover display 110 (part A). Thumbnail video preview of the selected title “y” is playing on the cover display 110. User 800 decides to continue watching title “y” on the main display 106 and proceeds to opening of the foldable device 100 (part B). While user opens the front cover 102, the thumbnail view on the cover display 110 is transitioned to the full screen video view on the main display 106. Playback of the perspective corrected view of the video continues on the cover display 110 and is perceived to match with the expanding main display view of the video. Accordingly, this allows for, for example, seamless audio-visual transition, no breaks in video consumption, maximum utilization of the combined visible screen area while transitioning between the displays FIG. 7 shows an example scenario. FIG. 7 is similar to the example of FIG. 6. However, in the example of FIG. 7 similar perspective corrections are implemented on the third display 202, which, in the example of FIG. 7, is part of the at least one first display 106. In the example of FIG. 7, video thumbnail preview, cover display 110 opening, and cover display image correction as in the example of FIG. 6. In the example of FIG. 7, after the cover display 110 is no longer visible to the user 800 and the left part of the main display 202 is becoming less occluded, the image perspective on that part is corrected (similar to the cover display 110) until the device 100 is fully open. In examples as described herein, an illusion of transparency is created for the secondary cover display 110 of a foldable device 100 so that it would appear as the main display 106 inside the device can be seen through the cover display 110. In examples, this is achieved by tracking the user position 806 in relation to the display screens 110, 106 of the device 100 and calculating and displaying a perspective corrected view 500 of the underlying main display contents 502 on the cover display 110. In examples, the image 500 on the cover display 110 is updated during the transition to the main display 106 (and also back to the cover display 110) so that the main visual cues presented to the viewer 800 on the cover display 110 match with those of the main display 103, regardless of their relative orientations. Examples of the disclosure provide: • A foldable, a multi-part, or a large display inside the device works as the main display while a secondary cover display is located on the outer surface. • Integrated cameras or other sensors located e.g. on the outer (and inner) surface(s) are used for tracking the user (eye) positions. • Both display positions in relation to the user are calculated. • Image on the cover display is modified during a transition from the cover display to the main display and back. • Perspective of the image is corrected / warped for the user so that the cover display appears as a transparent window to the main display. FIG. 9 illustrates an example of a method 900. Method 900 can be performed by any suitable apparatus comprising any suitable means for performing method 900. For example, an apparatus as described in relation to FIG. 1, and / or FIG 10A and / or 10B. At block 902, method 900 comprises determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device. At block 904, method 900 comprises determining a position of the first portion and second portion of the foldable device. At block 906, method 900 comprises determining a viewing position of a user of the foldable device. At block 908, method 900 comprises determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display. At block 910, method 900 comprises causing display of the perspective corrected image on the second display. Consequently, FIG. 9 illustrates a method 900 comprising: determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device; determining a position of the first portion and second portion of the foldable device; determining a viewing position of a user of the foldable device; determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; and causing display of the perspective corrected image on the second display. Examples of the disclosure are advantageous and / or provide technical benefits. For example, examples of the disclosure enable a user to determine where the UI features are going to be on the internal screen of a foldable device even before the user has had a full view of it. This enables the user to start to interact with the internal screen more quickly. For example, examples of the disclosure provide for example, for seamless transition between displays on a foldable device providing, for example, no breaks in video consumption and maximum utilization of the combined visible screen area while transitioning between displays. Fig 10A illustrates an example of a controller 1030 suitable for use in an apparatus, such as apparatus 100 of FIG. 1. In examples, controller 1030 can be an apparatus. Implementation of a controller 1030 may be as controller circuitry. The controller 1030 may be implemented in hardware alone, have certain aspects in software including firmware alone or can be a combination of hardware and software (including firmware). As illustrated in Fig 10A the controller 830 may be implemented using instructions that enable hardware functionality, for example, by using executable instructions of a computer program 1036 in a general-purpose or special-purpose processor 1032 that may be stored on a computer readable storage medium (disk, memory etc.) to be executed by such a processor 1032. The processor 1032 is configured to read from and write to the memory 1034. The processor 1032 may also comprise an output interface via which data and / or commands are output by the processor 1032 and an input interface via which data and / or commands are input to the processor 1032. The memory 1034 stores a computer program 1036 comprising computer program instructions (computer program code) that controls the operation of the apparatus when loaded into the processor 1032. The computer program instructions, of the computer program 1036, provide the logic and routines that enables the apparatus to perform the methods illustrated in the accompanying Figs. The processor 1032 by reading the memory 1034 is able to load and execute the computer program 1036. The apparatus comprises: at least one processor 1032; and at least one memory 1034 including computer program code the at least one memory 1034 and the computer program code configured to, with the at least one processor 1032, cause the apparatus at least to perform: determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device; determining a position of the first portion and second portion of the foldable device; determining a viewing position of a user of the foldable device; determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; and causing display of the perspective corrected image on the second display. The apparatus comprises: at least one processor 1032; and at least one memory 1034 including computer program code, the at least one memory storing instructions that, when executed by the at least one processor 1032, cause the apparatus at least to: determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device; determining a position of the first portion and second portion of the foldable device; determining a viewing position of a user of the foldable device; determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; and causing display of the perspective corrected image on the second display. As illustrated in Fig 10A, the computer program 1036 may arrive at the apparatus via any suitable delivery mechanism 1062. The delivery mechanism 1062 may be, for example, a machine readable medium, a computer-readable medium, a non-transitory computer-readable storage medium, a computer program product, a memory device, a record medium such as a Compact Disc Read-Only Memory (CD-ROM) or a Digital Versatile Disc (DVD) or a solid-state memory, an article of manufacture that comprises or tangibly embodies the computer program 1036. The delivery mechanism may be a signal configured to reliably transfer the computer program 1036. The apparatus may propagate or transmit the computer program 1036 as a computer data signal. Computer program instructions for causing an apparatus to perform at least the following or for performing at least the following: determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device; determining a position of the first portion and second portion of the foldable device; determining a viewing position of a user of the foldable device; determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; and causing display of the perspective corrected image on the second display. The computer program instructions may be comprised in a computer program, a non-transitory computer readable medium, a computer program product, a machine readable medium. In some but not necessarily all examples, the computer program instructions may be distributed over more than one computer program. Although the memory 1034 is illustrated as a single component / circuitry it may be implemented as one or more separate components / circuitry some or all of which may be integrated / removable and / or may provide permanent / semi-permanent / dynamic / cached storage. In examples the memory 1034 comprises a random-access memory 1058 and a read only memory 1060. In examples the computer program 1036 can be stored in the read only memory 1058. See, for example, Fig. 10B. Although the processor 1032 is illustrated as a single component / circuitry it may be implemented as one or more separate components / circuitry some or all of which may be integrated / removable. The processor 1032 may be a single core or multi-core processor. References to ‘computer-readable storage medium’, ‘computer program product’, ‘tangibly embodied computer program’ etc. or a ‘controller’, ‘computer’, ‘processor’ etc. should be understood to encompass not only computers having different architectures such as single / multi- processor architectures and sequential (Von Neumann) / parallel architectures but also specialized circuits such as field- programmable gate arrays (FPGA), application specific circuits (ASIC), signal processing devices and other processing circuitry. References to computer program, instructions, code etc. should be understood to encompass software for a programmable processor or firmware such as, for example, the programmable content of a hardware device whether instructions for a processor, or configuration settings for a fixed-function device, gate array or programmable logic device etc. As used in this application, the term ‘circuitry’ may refer to one or more or all of the following: (a) hardware-only circuitry implementations (such as implementations in only analog and / or digital circuitry) and (b) combinations of hardware circuits and software, such as (as applicable): (i) a combination of analog and / or digital hardware circuit(s) with software / firmware and (ii) any portions of hardware processor(s) with software (including digital signal processor(s)), software, and memory or memories that work together to cause an apparatus, such as a mobile phone or server, to perform various functions and (c) hardware circuit(s) and or processor(s), such as a microprocessor(s) or a portion of a microprocessor(s), that requires software (for example, firmware) for operation, but the software may not be present when it is not needed for operation. This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit for a mobile device or a similar integrated circuit in a server, a cellular network device, or other computing or network device. The blocks illustrated in the accompanying Figs may represent steps in a method and / or sections of code in the computer program 1036. The illustration of a particular order to the blocks does not necessarily imply that there is a required or preferred order for the blocks and the order and arrangement of the block may be varied. Furthermore, it may be possible for some blocks to be omitted. Where a structural feature has been described, it may be replaced by means for performing one or more of the functions of the structural feature whether that function or those functions are explicitly or implicitly described. In examples, an apparatus can comprise means for performing one or more methods, and / or at least part of one or more methods, as disclosed herein. In examples, an apparatus can be configured to perform one or more methods, and / or at least part of one or more methods, as disclosed herein. Thus, the apparatus can comprise means for: determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device; determining a position of the first portion and second portion of the foldable device; determining a viewing position of a user of the foldable device; determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; and causing display of the perspective corrected image on the second display. The apparatus can be provided in an electronic device, for example, a mobile terminal, according to an example of the present disclosure. It should be understood, however, that a mobile terminal is merely illustrative of an electronic device that would benefit from examples of implementations of the present disclosure and, therefore, should not be taken to limit the scope of the present disclosure to the same. While in certain implementation examples, the apparatus can be provided in a mobile terminal, other types of electronic devices, such as, but not limited to: mobile communication devices, hand portable electronic devices, wearable computing devices, portable digital assistants (PDAs), pagers, mobile computers, desktop 39 computers, televisions, gaming devices, laptop computers, cameras, video recorders, GPS devices and other types of electronic systems, can readily employ examples of the present disclosure. Furthermore, devices can readily employ examples of the present disclosure regardless of their intent to provide mobility. The term ‘comprise’ is used in this document with an inclusive not an exclusive meaning. That is any reference to X comprising Y indicates that X may comprise only one Y or may comprise more than one Y. If it is intended to use ‘comprise’ with an exclusive meaning then it will be made clear in the context by referring to “comprising only one...” or by using “consisting”. In this description, the wording ‘connect’, ‘couple’ and ‘communication’ and their derivatives mean operationally connected / coupled / in communication. It should be appreciated that any number or combination of intervening components can exist (including no intervening components), i.e., so as to provide direct or indirect connection / coupling / communication. Any such intervening components can include hardware and / or software components. As used herein, the term "determine / determining" (and grammatical variants thereof) can include, not least: calculating, computing, processing, deriving, measuring, investigating, identifying, looking up (for example, looking up in a table, a database or another data structure), ascertaining and the like. Also, "determining" can include receiving (for example, receiving information), accessing (for example, accessing data in a memory), obtaining and the like. Also," determine / determining" can include resolving, selecting, choosing, establishing, and the like. In this description, reference has been made to various examples. The description of features or functions in relation to an example indicates that those features or functions are present in that example. The use of the term ‘example’ or ‘for example’ or ‘can’ or ‘may’ in the text denotes, whether explicitly stated or not, that such features or functions are present in at least the described example, whether described as an example or not, and that they can be, but are not necessarily, present in some of or all other examples. Thus ‘example’, ‘for example’, ‘can’ or ‘may’ refers to a particular instance in a class of examples. A property of the instance can be a property of only that instance or a property of the class or a property of a sub-class of the class that includes some but not all of the instances in the class. It is therefore implicitly disclosed that a feature described with reference to one example but not with reference to another example, can where possible be used in that other example as part of a working combination but does not necessarily have to be used in that other example. Although examples have been described in the preceding paragraphs with reference to various examples, it should be appreciated that modifications to the examples given can be made without departing from the scope of the claims. Features described in the preceding description may be used in combinations other than the combinations explicitly described above. Although functions have been described with reference to certain features, those functions may be performable by other features whether described or not. Although features have been described with reference to certain examples, those features may also be present in other examples whether described or not The term ‘a’, ‘an’ or ‘the’ is used in this document with an inclusive not an exclusive meaning. That is any reference to X comprising a / an / the Y indicates that X may comprise only one Y or may comprise more than one Y unless the context clearly indicates the contrary. If it is intended to use ‘a’, ‘an’ or ‘the’ with an exclusive meaning then it will be made clear in the context. In some circumstances the use of ‘at least one’ or ‘one or more’ may be used to emphasis an inclusive meaning but the absence of these terms should not be taken to infer any exclusive meaning. The presence of a feature (or combination of features) in a claim is a reference to that feature or (combination of features) itself and also to features that achieve substantially the same technical effect (equivalent features). The equivalent features include, for example, features that are variants and achieve substantially the same result in substantially the same way. The equivalent features include, for example, features that perform substantially the same function, in substantially the same way to achieve substantially the same result. In this description, reference has been made to various examples using adjectives or adjectival phrases to describe characteristics of the examples. Such a description of a characteristic in relation to an example indicates that the characteristic is present in some examples exactly as described and is present in other examples substantially as described. The above description describes some examples of the present disclosure however those of ordinary skill in the art will be aware of possible alternative structures and method features which offer equivalent functionality to the specific examples of such structures and features described herein above and which for the sake of brevity and clarity have been omitted from the above description. Nonetheless, the above description should be read as implicitly including reference to such alternative structures and method features which provide equivalent functionality unless such alternative structures or method features are explicitly excluded in the above description of the examples of the present disclosure. Whilst endeavoring in the foregoing specification to draw attention to those features believed to be of importance it should be understood that the Applicant may seek protection via the claims in respect of any patentable feature or combination of features hereinbefore referred to and / or shown in the drawings whether or not emphasis has been placed thereon. l / we claim:

Claims

1. An apparatus comprising means for:determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device;determining a position of the first portion and second portion of the foldable device;determining a viewing position of a user of the foldable device;determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; andcausing display of the perspective corrected image on the second display.

2. An apparatus as claimed in claim 1, wherein the perspective corrected image is configured to appear to the user as being displayed on the at least one first display.

3. An apparatus as claimed in claim 1 or 2, wherein determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another comprises determining sensor data and determining that the first portion and second portion of the foldable device have moved relative to one another based, at least in part, on the sensor data.

4. An apparatus as claimed in any preceding claim, wherein determining a position of the first portion and second portion of the foldable device comprises determining a position of the first portion and second portion of the foldable device in relation to the user.

5. An apparatus as claimed in any preceding claim, wherein determining a position of the first portion and second portion of the foldable device comprises43 determining a position and orientation of the first portion and second portion of the foldable device.

6. An apparatus as claimed in claim 5, wherein determining an orientation of the first portion and second portion of the foldable device comprises using a default orientation or determining sensor data and determining the orientation of the first portion and / or second portion based, at least in part, on the determined sensor data.

7. An apparatus as claimed in any preceding claim, wherein determining a position of the first portion and second portion of the foldable device comprises determining sensor data and determining the position of the first portion and second portion of the foldable device based, at least in part, on the determined sensor data.

8. An apparatus as claimed in any preceding claim, wherein determining a viewing position of a user of the foldable device comprises determining a position of at least one eye of the user based, at least in part, on camera data.

9. An apparatus as claimed in claim 8, wherein the foldable device comprises at least one camera on the outer surface of the first portion of the foldable device and / or at least one camera on the inner surface of the second portion of the foldable device, and wherein the camera data is from at least one of the at least one camera on the outer surface of the first portion of the foldable device and / or the at least one camera on the inner surface of the second portion of the foldable device.

10. An apparatus as claimed in any preceding claim, wherein the device comprises a third display located, at least in part, on an inner surface of the first portion of the foldable device, and wherein the means are configured to:determine, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the third display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; andcausing display of the perspective corrected image on the third display.

11. An apparatus as claimed in any preceding claim, wherein the means are configured to change content in the perspective corrected image based, at least inpart, on the movement of the first portion of the foldable device and the second portion of the foldable device relative to one another to open the foldable device from the folded state.

12. An apparatus as claimed in claim 11, wherein changing content in the perspective corrected image comprises changing at least one of: size, orientation, and position of at least one displayed element.

13. An apparatus as claimed in any preceding claim, wherein the means are configured to change content displayed on the at least one first display based, at least in part, on the change in content in the perspective corrected image as the first portion of the foldable device and second portion of the foldable device move relative to one another to open the foldable device from the folded state.

14. A foldable device comprising an apparatus as claimed in at least one of claims 1 to 13.

15. A foldable device as claimed in claim 14, wherein the foldable device is a mobile telephone.

16. A method comprising:determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device;determining a position of the first portion and second portion of the foldable device;determining a viewing position of a user of the foldable device;determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; andcausing display of the perspective corrected image on the second display.

17. A method as claimed in claim 16, wherein the perspective corrected image is configured to appear to the user as being displayed on the at least one first display.

18. A method as claimed in claim 16 or 17, wherein determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another comprises determining sensor data and determining that the first portion and second portion of the foldable device have moved relative to one another based, at least in part, on the sensor data.

19. A method as claimed in any of claims 16 to 18, wherein determining a position of the first portion and second portion of the foldable device comprises determining a position of the first portion and second portion of the foldable device in relation to the user.

20. A method as claimed in any of claims 16 to 19, wherein determining a position of the first portion and second portion of the foldable device comprises determining a position and orientation of the first portion and second portion of the foldable device.

21. A computer program comprising instructions for causing an apparatus to perform:determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another to open the foldable device from a folded state, the foldable device comprising at least one first display located, at least in part, on an inner surface of the second portion of the foldable device, and a second display located on an outer surface of the first portion of the foldable device;determining a position of the first portion and second portion of the foldable device;determining a viewing position of a user of the foldable device;determining, based at least in part on the determined positions of the first portion and second portion of the foldable device and the viewing position of the user, a perspective corrected image to be displayed on the second display, the perspective corrected image configured to be perceived by the user as being in a display plane of the at least one first display; andcausing display of the perspective corrected image on the second display.

22. A computer program as claimed in claim 21, wherein the perspective corrected image is configured to appear to the user as being displayed on the at least one first display.

23. A computer program as claimed in claim 21 or 22, wherein determining that a first portion of a foldable device and a second portion of the foldable device have moved relative to one another comprises determining sensor data and determining that the first portion and second portion of the foldable device have moved relative to one another based, at least in part, on the sensor data.

24. A computer program as claimed in any of claims 21 to 23, wherein determining a position of the first portion and second portion of the foldable device comprises determining a position of the first portion and second portion of the foldable device in relation to the user.

25. A computer program as claimed in any of claims 21 to 24, wherein determining a position of the first portion and second portion of the foldable device comprises determining a position and orientation of the first portion and second portion of the foldable device.

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