Interactive headphone system and headphones for storing and playing back audio content

Abstract

Interactive headphone system (100) for recording and playing back audio content, sending: an NFC tag (230) with an RFID code (480), the 6th system according to claim 5, characterized by a unique identifier (490) of the NFC tag by the fact that the chip, the NFC tag (230) and the magnetized or magnetizable component (240) contain; and a headphone (110), comprising: having substantially radial symmetry; one or more controls for operating the headphone (110); the NFC tag (230) and the magnetized or magnetizable component (240), in particular a memory (420) which stores one or more audio files (430; 450), each of which has a substantially ring-shaped geometry. or several audio files (430; 450) are associated with a unique identifier (440; 460), and wherein one or more audio files (430;450) are locked, so that access is only possible through an RFID code containing a unique identifier that corresponds to the unique identifier (440; 460) of a respective audio file (430; 450); and an NFC reader (410), wherein, when the NFC tag (230) with a unique identifier (490) corresponding to the unique identifier (440; 460) of a respective audio file (430; 450) is brought into the immediate vicinity of the NFC reader (410), the headphones (110) are configured to: process (510) the RFID code (480) containing the unique identifier of the NFC tag (490); correlate (520) the unique identifier of the NFC tag (490) with the unique identifier (440; 460) of the audio file (430; 450) stored in the memory; and wherein the unlocked audio file can be accessed by one or more controls, so that a passage or song can be skipped or the last passage or song can be returned to.;

Description

[0001] The invention relates to an interactive headphone system for storing and playing back audio content, as well as a headphone which has stored audio files and a chip, in particular made of plastic, which can unlock an audio file stored on a playback device for playback.

[0002] Headphones are available to the end user in numerous variations today, whether wired or wireless, where the signal is transmitted via Bluetooth, for example. Furthermore, users can choose between types such as in-ear headphones, earbuds, or over-ear headphones (for example, as "on-ear" or "over-ear" models). With most headphones, the audio content is not stored on the headphones themselves, but on a playback device to which the headphones are connected, either wired or wirelessly. Such a playback device could be, for example, a smartphone, a computer, a tablet, or an MP3 player. In this common configuration, the user can typically select the content to be played using controls and / or a user interface.

[0003] Furthermore, some headphones include their own internal memory for storing playback content. These headphones typically don't require a connection to a smartphone, tablet, etc., to play audio and can be controlled via integrated controls. Traditionally, the user can manually load data onto the memory, for example, via a wired or wireless connection to a computer.

[0004] Current headphones are used solely for the direct playback of audio files, possibly stored on the headphones themselves, without restricting access to the audio files. This is particularly unintuitive for headphones with data stored on them, as most existing headphones lack a practical functionality for unlocking audio content. Similarly, audio content stored on smartphones, tablets, etc., typically only has access restrictions for the device itself, such as a PIN.

[0005] Specifically, targeted, intuitive and only temporary unlocking followed by automatic playback of individual audio content stored on the headphone's memory is not yet possible.

[0006] ES 1 076 522 U discloses an electronic device for playing songs and recorded messages in conjunction with adhesive labels.

[0007] US 2016 / 0294902 A1 discloses a method for the reproduction of multimedia content.

[0008] EP 1 719 039 B1 discloses an RFID-protected media system and media process.

[0009] DE 10 2008 007 484 A1 discloses a method in which podcasts from individual or different providers are collected and processed by a PodAgent according to customer requirements or are made available on behalf of a provider (podcaster) for a specific purpose.

[0010] The object of the present invention is therefore to intuitively and selectively release audio content stored on headphones for playback.

[0011] The problem is solved by the subject matter defined in the independent claims.

[0012] The dependent claims define embodiments.

[0013] The present invention overcomes the aforementioned problems and solves the problem by providing an interactive headphone system, particularly for children, for storing and playing back audio content, as well as headphones which have stored audio files and a chip, particularly made of plastic, which can unlock an audio file stored on a playback device, particularly headphones, for playback. The underlying technology relates to an interaction between a near-field communication tag, hereinafter referred to as NFC tag, and a near-field communication reader, hereinafter referred to as NFC reader, wherein the NFC reader is part of the headphones and the NFC tag, when brought into the immediate vicinity of the NFC reader, can unlock specific audio content stored on the headphones and automatically start playback of this specific audio content. The interactive headphone system and the headphones according to the invention, as well as the chip according to the invention, particularly made of plastic, have the advantage that audio content stored on the headphones can be selectively unlocked and automatically played back, with the user only needing to bring a corresponding NFC tag into the immediate vicinity of the headphones' NFC reader. This simplifies user interaction, as, for example, no controls need to be operated to start playback. Furthermore, a licensor or a supervisor, such as a parent, can control which audio content the user can play back via the headphones by selectively providing the user with NFC tags, or in some embodiments, plastic chips with embedded NFC tags. The interactive headphone system according to the invention for storing and playing back audio content comprises an NFC tag with an RFID code containing a unique identifier of the NFC tag, and headphones comprising a memory that stores one or more audio files, each of the one or more audio files being associated with a unique identifier, and wherein the one or more audio files are locked so that access is only possible by an RFID code containing a unique identifier corresponding to the unique identifier of a respective audio file, and an NFC reader, wherein when the NFC tag with a unique identifier corresponding to the unique identifier of a respective audio file is brought into the immediate vicinity of the NFC reader, the headphones are configured to: process the RFID code containing the unique identifier of the NFC tag;Correlating the unique identifier of the NFC tag with the unique identifier of the audio file stored in memory; unlocking the audio file; and automatically starting playback of the audio file.

[0014] In one embodiment, the system is characterized in that playback is automatically terminated when the NFC tag is removed from the immediate vicinity of the NFC reader. "Terminated" in this context can mean both that playback is canceled and that playback is interrupted.

[0015] In one embodiment, the system is characterized in that the NFC tag is embedded in a chip, in particular made of plastic.

[0016] In another embodiment, the system is characterized in that the NFC tag has a substantially radially symmetrical, in particular a ring-shaped, geometry.

[0017] In one embodiment, the system is characterized in that the headphones further comprise a magnet, in particular a magnetic surface, in the immediate vicinity of the NFC reader, and the chip is configured such that the chip can be magnetically attached to the headphones for unlocking and playing back audio content.

[0018] In another embodiment, the system is characterized in that a magnetized or magnetizable component is embedded in the chip in order to magnetically attach the chip to the headphones.

[0019] In one embodiment, the system is characterized in that the chip has at least one planar surface and a magnetic surface of the headphones is planar, so that the chip can be magnetically attached to the headphones by bringing one of the at least one planar surface of the chip and the planar magnetic surface of the headphones into substantially contact.

[0020] In one embodiment, the system is characterized in that the chip housing has radial symmetry and the NFC tag is centrally embedded in the chip and aligned parallel to one of the at least one planar surface of the chip.

[0021] In one embodiment, the system is characterized in that the chip essentially has a plano-convex geometry, i.e., a planar surface and a convex surface.

[0022] In an alternative embodiment, the system is characterized in that the chip has an essentially cylindrical geometry.

[0023] In one embodiment, the system is characterized in that the magnetized or magnetizable component is embedded in the chip in a ring shape, wherein the magnetized or magnetizable component is aligned parallel to one of the at least one planar surface of the chip.

[0024] In one embodiment, the system is characterized in that the planar magnetic surface of the headphone forms a base surface of a first cavity, wherein the first cavity has a geometry suitable for fixing the chip in a lateral direction.

[0025] In one embodiment, the system is characterized in that the first cavity has a circular base.

[0026] In one embodiment, the system is characterized in that a second cavity is defined on a part of the base of the first cavity, so that the magnetically attached chip can be tilted and thereby removed from the headphones by applying pressure to the chip surface that overlaps with the second cavity.

[0027] In one embodiment, the system is characterized in that the surface of the second cavity is not magnetic, so that if the chip attached to the magnetic base is unintentionally tilted into the second cavity, it is drawn back to the magnetic base of the first cavity by magnetic attraction.

[0028] In one embodiment, the system is characterized in that the first cavity has a circular base, the second cavity is defined on a circular segment of this circular base and forms an inclined plane with a constant angle relative to the circular base of the first cavity.

[0029] In one embodiment, the system is characterized in that, following the embedding of one or more components, the two halves of the chip are welded together by ultrasonic welding.

[0030] In one embodiment, the system is characterized in that a file history of the played file, the played file (specifically, for example, the name of the file and / or the path under which the file is stored), the unique identifier of the NFC tag, and a timestamp are recorded.

[0031] In one embodiment, the system is characterized in that the playback of the audio file is continued seamlessly, in particular at the point in the content where playback was stopped, when the NFC tag is brought back into the immediate vicinity of the NFC reader after playback has ended.

[0032] In one embodiment, the system is characterized in that the headphones further include an infrared sensor configured to detect whether the headphones are being worn by a person.

[0033] In one embodiment, the system is characterized in that the automatic playback of the audio file only occurs if the infrared sensor detects that the headphones are being worn by a person.

[0034] In another embodiment, the system is characterized in that the NFC tag is a passive tag.

[0035] In one embodiment, the system is characterized in that the headphones are over-ear headphones. In another embodiment, the system is characterized in that the headphones have a ribbed surface on the ear cups. In another embodiment, the system is characterized in that the NFC reader and the magnetic surface are attached to the right ear cup.

[0036] The headphones according to the invention comprise a memory on which one or more audio files are stored, each of the one or more audio files being associated with a unique identifier, and wherein the one or more audio files are locked so that access is only possible by an RFID code containing a unique identifier corresponding to the unique identifier of a respective audio file; and an NFC reader configured to read a unique identifier of an NFC tag brought into the immediate vicinity of the headphones' NFC reader, causing the headphones to: compare the unique identifier of the NFC tag with unique identifiers of audio files stored on the memory; and unlock a corresponding audio file if the unique identifier of the NFC tag matches a unique identifier of a stored audio file.and automatically start playback of the corresponding audio file.

[0037] In one embodiment, the headphones are characterized in that playback automatically stops when the NFC tag is removed from the immediate vicinity of the NFC reader. "Stops" in this context can mean both that playback is aborted and that playback is interrupted.

[0038] In one embodiment, the headphones are characterized in that the headphones further comprise a magnet, in particular a magnetic surface, in the immediate vicinity of the NFC reader, so that a further device, which in addition to the NFC tag also has a magnetic or magnetizable component, can be magnetically attached to the headphones in order to unlock and play audio content.

[0039] In one embodiment, the headphones are characterized in that the magnetic surface of the headphones is planar, so that the further device can be magnetically attached to the headphones by bringing a planar surface of the further device and the planar magnetic surface of the headphones into substantially contact.

[0040] In one embodiment, the headphones are characterized in that the planar magnetic surface forms the base of a first cavity. In another embodiment, the headphones are characterized in that the first cavity is dimensioned such that the additional device can be inserted into the first cavity. In yet another embodiment, the headphones are characterized in that the first cavity has a circular base. In yet another embodiment, the headphones are characterized in that a second cavity is defined on a portion of the base of the first cavity, allowing the additional magnetically attached device to be tilted and thereby removed from the headphones.

[0041] In one embodiment, the headphones are characterized in that the surface of the second cavity is not magnetic, so that the further device attached to the magnetic base surface is drawn back to the magnetic base surface of the first cavity by magnetic attraction force if it unintentionally tips into the second cavity.

[0042] In one embodiment, the headphones are characterized in that the first cavity has a circular base, the second cavity is defined on a circular segment of this circular base and forms an inclined plane with a constant angle relative to the circular base of the first cavity.

[0043] In one embodiment, the headphones are characterized in that the headphones are configured to record a file history of the played file, the played file (specifically, for example, the name of the file and / or the path under which the file is stored), the unique identifier of the NFC tag, and a timestamp.

[0044] In one embodiment, the headphones are characterized in that the playback of the audio file continues seamlessly when, after playback has ended, the NFC tag is brought back into the immediate vicinity of the NFC reader.

[0045] In one embodiment, the headphones are characterized in that the headphones further include an infrared sensor configured to detect whether the device is being worn by a person.

[0046] In one embodiment, the headphones are characterized in that the automatic playback of the audio file only occurs if the infrared sensor detects that the headphones are being worn by a person.

[0047] In one embodiment, the headphones are characterized in that they are over-ear headphones. In another embodiment, the headphones are characterized in that the NFC reader is located in the right earcup of the headphones and the magnetic surface is located on the right earcup of the headphones. In yet another embodiment, the headphones are characterized in that they include a ribbed texture on the earcups.

[0048] The chip according to the invention, in particular made of plastic, with an embedded NFC tag, is configured to transmit an RFID code containing a unique identifier of the NFC tag to an NFC reader when the chip is brought into the immediate vicinity of the NFC reader.

[0049] In one embodiment, the chip is characterized in that the NFC tag has a substantially radially symmetrical, in particular a ring-shaped, geometry.

[0050] In a further embodiment, the chip is characterized in that a magnetized or magnetizable component is embedded in the chip, so that the chip can be attached to a surface by magnetic attraction.

[0051] In one embodiment, the chip is characterized in that the chip has at least one planar surface, so that the chip can be magnetically attached to a planar magnetic surface by bringing one of the at least one planar surface of the chip and the planar magnetic surface into substantially contact.

[0052] In one embodiment, the chip is characterized in that the chip's housing has essentially radial symmetry and the NFC tag is centrally embedded in the chip and aligned parallel to one of the at least one planar surface of the chip.

[0053] In one embodiment, the chip is characterized in that the chip essentially has a plano-convex geometry, i.e., a planar surface and a convex surface.

[0054] In an alternative embodiment, the chip is characterized in that the chip has an essentially cylindrical geometry.

[0055] In one embodiment, the chip is characterized in that the magnetized or magnetizable component is embedded in the chip in a ring shape, wherein the magnetized or magnetizable component is aligned parallel to one of the at least one planar surface of the chip.

[0056] In one embodiment, the chip is characterized in that, following the embedding of the components, the two halves of the chip are welded together by ultrasonic welding.

[0057] In one embodiment, the chip is characterized in that the NFC tag is a passive tag.

[0058] In one embodiment, the chip is characterized in that it has a substantially cylindrical geometry, with a diameter large enough to prevent children from swallowing it, and a height large enough to accommodate an embedded NFC tag. In another embodiment, the chip is characterized in that it has a diameter between 40 and 55 millimeters and a height between 3 and 10 millimeters.

[0059] In one embodiment, the chip is characterized in that the chip has a recess on at least one side for attaching a labeling sticker.

[0060] In one embodiment, the chip is characterized in that, when the chip is brought into the immediate vicinity of the NFC reader, it is configured to transmit an RFID code corresponding to the orientation of the chip relative to the NFC reader.

[0061] The present invention will be described in more detail below with reference to exemplary drawings. The drawings show examples of advantageous embodiments of the invention.

[0062] They show: Fig. 1 a schematic representation of an interactive headphone system according to the invention for storing and playing back audio content according to one embodiment, Fig. 2 a schematic representation of a device according to the invention for transmitting an RFID code contained in an NFC tag to an NFC reader according to one embodiment, Fig. 3A to Fig. 3D a schematic representation of a cavity of the headphone according to an embodiment according to the invention, Fig. 4 a schematic representation of an interactive headphone system according to the invention for storing and playing back audio content according to one embodiment, and Fig. 5 a schematic flowchart of a method according to an embodiment of the interactive headphone system according to the invention.

[0063] Fig. Figure 1 shows an interactive headphone system according to the invention. 100 for storing and playing back audio content. The interactive headphone system 100 includes headphones 110 and an NFC tag. The NFC tag, containing an RFID code with a unique identifier, can be embedded in a chip, particularly a plastic chip. 120, be embedded. It is understood that a chip is a flat component with an otherwise arbitrary package shape. In the following, the chip is described as a preferred embodiment in the form of a plastic chip. 120 described. It should be noted that the chip, in particular, represents the functionality of a housing into which one or more components can be embedded, and, in addition to the preferred plastic embodiment, can be constructed in alternative embodiments from any other material that ensures sufficient stability and is suitable for implementing the functionality claimed herein, such as hard paper, ceramic, wood, bioplastic, or a comparably stable material that is biodegradable and / or made from renewable resources. The headphones 110 can a cavity 130 , with a magnetic surface 140 , which form the base area of ​​the cavity 130forms, encompass. The headphones 110 includes an unspecified storage area (schematically represented in Fig. 4) storing one or more audio files, each of which is associated with a unique identifier, and wherein the one or more audio files are locked so that access is only possible via an RFID code containing a unique identifier corresponding to the unique identifier of each audio file. The storage medium can, for example, have a capacity of 10 gigabytes, 20 gigabytes, or 50 gigabytes and can be implemented, for example, using a magnetic, optical, or semiconductor-based storage medium. More specifically, the storage medium can, for example, be in the form of a solid-state drive.

[0064] The headphones 110 It also includes an NFC reader (schematically depicted in [reference]). Fig. 4) When an NFC tag with a unique identifier corresponding to the unique identifier of a particular audio file stored on the headphones' memory is brought into the immediate vicinity of the NFC reader, the headphones 110The device is configured to process the RFID code containing the unique identifier of the NFC tag; to correlate the unique identifier of the NFC tag with the unique identifier of the audio file stored in memory; to unlock the audio file; and to automatically start playback of the audio file. Playback can be automatically stopped when the NFC tag is removed from the immediate vicinity of the NFC reader. Stopping playback can mean either canceling it or temporarily pausing it. According to one embodiment, playback can be seamlessly resumed when the NFC tag is brought back into the immediate vicinity of the NFC reader after a paused playback.

[0065] Furthermore, the headphones contain 110 appropriate circuit technology so that the headphone system 100 which features described and claimed herein and which can exhibit and perform the characteristics described herein.

[0066] The headphones 110 can also include a magnet, in particular a magnetic surface 140 , in the immediate vicinity of the NFC reader. For example, the NFC reader can be located directly below the magnetic surface. 140 be attached so that the plastic chip 120 with embedded NFC tag for unlocking and playing audio content, magnetically attached to the headphones 110 can be attached in case the plastic chip 120 is set up in such a way that the magnetic surface 140 the headphones exert a magnetic attraction on the plastic chip 120 exercises this function. In such a configuration, the playback of the audio file stored on the memory, whose unique identifier corresponds to the unique identifier of the chip in the plastic chip, is possible. 120 embedded NFC tags correspond to, until the plastic chip 120 from the magnetic surface140 is removed and / or the headphone battery is empty and / or the unlocked audio file has finished playing. The magnetic surface 140 This could be, for example, the surface of a magnet. The magnetic surface 140 In another embodiment, it can also be a plastic surface under which a magnet is embedded, wherein the plastic surface and the underlying magnet are designed and / or dimensioned such that the magnet exerts a magnetic attraction on magnetizable or magnetized objects that is large enough to cause them to attach to the magnetic surface. 140 adhere. As a concrete example, the magnetic surface 140 be designed so that the plastic chip 120 with an embedded NFC tag that is set up in such a way that it is separated from the magnetic surface 140is attracted by magnetic attraction, experiences a magnetic attraction strong enough to attach the plastic chip 120 for any spatial orientation of the headphones 110 and for normal headphone accelerations 110 (for example, by walking, jumping, head movement, etc.) on the headphones 110 to fix.

[0067] The headphones 110 It can record a file history of the played file, the played file itself (specifically, for example, the file name and / or the path where the file is stored), the unique identifier of the NFC tag and / or the unique identifier of the played file, and a timestamp. If playback is interrupted, for example, by removing the plastic chip... 120 from the magnetic surface 140 , by removing the headphones 110and / or by switching off the headphones 110 In such a configuration, playback of the audio file can continue seamlessly when the headphones are switched on. 110 is switched on and the NFC tag is brought back into the immediate vicinity of the NFC reader after playback has ended, or in some designs the plastic chip 120 with the embedded NFC tag magnetically attached to the headphones 110 is attached.

[0068] The headphones 110 Furthermore, it can include technology for suppressing unwanted ambient noise, which can encompass active noise cancellation and / or passive noise cancellation, for example, through the geometry and choice of materials (e.g., sound-absorbing foam) of the installed components. Through appropriate noise suppression, the ambient noise level can be reduced by, for example, 20 dB(A), 25 dB(A), or 30 dB(A).

[0069] Furthermore, the headphones 110 one or more control elements (for example, one or more of: a button, push button, rocker switch, toggle switch and lever, rotary knob and switch, slider, sliding switch) for operating the headphones 110 This includes, for example, a single press of a button. 110 to cause a passage or song to be skipped, whereas repeated pressing of the button will unplug the headphones. 110 can cause it to jump back to the last passage or song. Furthermore, the headphones can 110 For example, it could include one or more controls for adjusting the volume. A concrete example would be headphones. 110 It includes a toggle switch to select between three playback volumes, for example 65 dB(A), 75 dB(A) and 85 dB(A).

[0070] In some versions, the headphones 110A pair of over-ear headphones. In this design, for example, the NFC reader can be attached to the right earcup. Furthermore, the headphones can 110 In the design as shell headphones, they include a size-adjustable headband, so that the headphones 110 It can be adjusted to fit people with different head sizes. For example, in such a design, the headphones can be... 110 Adjustable in size, specifically designed for children between three and ten years old. Furthermore, the headphones can 110 In a design as earphones, they include joints that allow each earphone cup to rotate around two axes (for example, around an x- and a y-axis) for increased wearing comfort. The headphones 110 It can also have a ribbing. 150 on the ear cups, which provide improved handling of the headphones. 110, especially for children, and specifically the insertion / removal of the plastic chip 120 facilitated by improved ergonomics.

[0071] Furthermore, the headphones 110 include an indicator light that, for example, glows green when the headphones are 110 It lights up blue when the headphones are switched on. 110 data is being processed, has an active connection, or is in pairing mode, and glows red when the headphone battery is low. 110 is almost empty. As a concrete example, the indicator light may glow red when 40 minutes or less of battery life remains under normal use. For example, the headphones 110 Provide a visual and / or audible alert every 10 minutes when 40 minutes or less of battery life remains under normal use. As a further example, the headphones 110Provide a visual and / or audible warning every 2 minutes when 10 minutes or less of battery life remains under normal operation. The battery can be designed to provide, for example, a battery life of 10 hours, 12 hours, or 14 hours under normal playback conditions and can be quickly recharged, for example, via a fast-charging process.

[0072] The headphones 110 can use an infrared sensor 160 include the infrared sensor. 160 is configured to detect if the headphones 110 is worn by a person. If the NFC tag has a unique identifier that matches the unique identifier stored on the headphone's memory. 110 If the stored audio file is brought into the immediate vicinity of the NFC reader, automatic playback of the audio file can only occur in one configuration if the infrared sensor160 detected that the headphones 110 is worn by a person. Furthermore, in such a configuration, ongoing playback can be interrupted if the infrared sensor 160 detected that the headphones 110 has been removed / is no longer being worn by a person. In a design as over-ear headphones, the infrared sensor 160 in a preferred embodiment on a headphone cup of headphones 110 appropriate, as exemplified in Fig. 1 shown. In an alternative embodiment, the infrared sensor 160 on the headband of headphones 110 appropriate.

[0073] The headphones 110 It may also include one or more physical ports, for example, one or more USB-C and / or USB-B ports. In such a configuration, the headphone's battery can be connected. 110The headphones can be charged via one or more physical ports; alternatively, a corresponding port can also be used for data transmission and to establish a connection to a mobile device, smartphone, tablet, or computer. In this configuration, after establishing a connection to a mobile device, smartphone, tablet, or computer, an application or website can be accessed via the mobile device, smartphone, tablet, or computer, through which data from the headphones can be transferred. 110 can be uploaded to a platform (for example, a cloud, a server, etc.) and data can be transferred to the headphones 110 can be downloaded. Data exchange with, for example, a server can be achieved in this configuration via a Wi-Fi connection between the headphones and the server. 110 connected smartphones, tablets or computers to a router.

[0074] Uploaded data can include, for example, the unique identifier from an NFC tag attached to the headphones. 110 has unlocked stored audio content and the headphones 110 This includes actions that have triggered the playback of audio content. Furthermore, such an NFC tag can be registered in a central directory. Specifically, an NFC tag can also be registered that is used to unlock and play audio on the headphones. 110 stored audio content in the immediate vicinity of the headphones' NFC reader 110 was brought in and whose unique identifier was classified as qualified to unlock audio content, but for which, for example, corresponding audio content is not stored on the headphones, the audio content is damaged and therefore could not be played back, and / or the audio content could not be read.

[0075] Downloaded data can include, for example, an update, a modification, and / or a download process on the headphones. 110 This includes saved / to-be-saved audio files. Furthermore, audio files can be specifically saved to the headphones. 110 The headphones can be loaded with content for which there has previously been a failed attempt to unlock and play it using a corresponding NFC tag. Another example is that new audio content popular with other users can be loaded onto the headphones.

[0076] Furthermore, the headphones can 110 It can be folded flat for space-saving storage and transport. The headphones 110It can be designed so that the individual parts do not feel sharp to the user, for example, by rounding edges with a radius of at least one millimeter. Furthermore, the joints and moving components of the headphones can be... 110 They should be designed to move smoothly with slight resistance. Furthermore, the materials of the headphones can... 110 They should be chosen to be durable and resistant to wear and tear. Furthermore, the headphones can 110 It should be designed so that the weight is distributed evenly between both sides of the headphones. 110 is distributed.

[0077] In particular, the interactive headphone system 100 a technology that is particularly suitable for use by children. The simple design of both headphones 110 , as well as plastic chips 120 with embedded plastic chip 230, and in particular the intuitive interaction of these system components in the operation of the system, makes it especially possible for children to use the interactive headphone system 100 It is playfully easy to use and allows audio content to be played independently and without the help of, for example, parents, older siblings, or a supervisor.

[0078] Fig. Figure 2 shows a schematic representation of a device according to the invention for transferring an RFID code contained in an NFC tag to an NFC reader according to one embodiment, in particular an exploded view of the plastic chip. 120 out of Fig. 1. The plastic chip 120 In addition to the actual housing, which in one design consists of two halves of the plastic chip, it includes 210 and 220 is set up to include an NFC tag 230 The NFC tag 230It is programmed with a unique identifier and contains an RFID code that includes this unique identifier. The plastic chip 120 with embedded NFC tag 230 is configured to read the NFC tag 230 to transfer the contained RFID code to an NFC reader, for example the one in headphones 110 included NFC reader, if the plastic chip 120 is brought into the immediate vicinity of the NFC reader. In this context, "immediate vicinity" means at least a distance between the NFC tag and the reader. 230 and an NFC reader, which ensures stable and reliable data transmission via Near Field Communication. It is therefore understood that the term "immediate environment" in the context of NFC technology refers to a distance of at most 10 cm between the NFC tag and the reader. 230and NFC reader. Apart from this maximum distance inherent in the technology, the combination of NFC tag 230 and the NFC reader can be configured as desired. Accordingly, the immediate surroundings can be, for example, 0.5 cm, 1 cm, 2 cm, or 5 cm between the NFC tag and the reader, depending on the design. 230 and NFC reader.

[0079] The NFC tag 230 can have an essentially radially symmetrical, in particular an annular, geometry. Such a design is found in Fig. Figure 2 shows that an essentially radially symmetrical geometry generally exists, but this can be disrupted, for example, by small, non-radially symmetrical indentations due to manufacturing processes, or by non-radially symmetrical electrical connections. The primary focus of an essentially radially symmetrical geometry is to ensure the transmission of the data contained in the NFC tag.230 The RFID codes contained within the tag can be read by an NFC reader in a rotationally invariant manner with respect to the axis of symmetry. The same applies to the essentially ring-shaped geometry, which is a preferred design of the NFC tag. 230 represents.

[0080] Furthermore, a magnetized or magnetizable component 240 in the plastic chip 120 be embedded so that the plastic chip 120 through magnetic attraction to a surface, for example the magnetic surface 140 out of Fig. 1, a component, or a recess.

[0081] The magnetized or magnetizable component 240 can have an essentially radially symmetrical, in particular an annular, geometry. Such a design is found in Fig. Figure 2 illustrates this. An essentially radially symmetrical geometry means that radial symmetry is generally present, but this can be disrupted, for example, by small, non-radially symmetrical indentations due to manufacturing processes. The primary benefit of an essentially radially symmetrical geometry is the magnetic attachment of the plastic chip. 120 on a magnetic surface, for example the magnetic surface 140 out of Fig. 1. Rotationally invariant with respect to the axis of symmetry can be ensured. The same applies to the essentially ring-shaped geometry, which is a preferred embodiment of the magnetized or magnetizable component. 240 represents the magnetized or magnetizable component. 240 It can be made, for example, of iron, steel, or any other magnetized or magnetizable material.

[0082] The plastic chip 120can have at least one planar surface, so that the plastic chip 120 magnetically attached to a planar magnetic surface, for example the magnetic surface 140 , can be attached by attaching it to at least one of the planar surfaces of the plastic chip 120 and the planar magnetic surface is substantially brought into contact. Being substantially brought into contact means that at least one of the planar surfaces of the plastic chip is... 120 and the planar magnetic surface is approached to at least a distance at which the magnetic attraction force is sufficient to attract the plastic chip 120 to magnetically fix it to the magnetic surface. As a concrete example, the strength of the magnetic attraction in the fixed state can be designed so that the plastic chip 120 with embedded NFC tag 230 , which is set up in such a way that it is separated from the magnetic surface 140is attracted by magnetic attraction, experiences a magnetic attraction strong enough to attach the plastic chip 120 for any spatial orientation of the headphones 110 and for normal headphone accelerations 110 (for example, by walking, jumping, head movement, etc.) on the headphones 110 to fix.

[0083] The casing of the plastic chip 120 It can essentially exhibit radial symmetry. In this context, "essentially radial symmetry" means that radial symmetry is generally present, but this can be disrupted, for example, by small, non-radially symmetric indentations due to the manufacturing process. Furthermore, it should be noted that the radial symmetry of the plastic chip's housing... 120 on the outer geometry of the plastic chip 120 limited, that is, that the plastic chip 120It has an essentially radially symmetrical geometry from the outside. This geometry allows for rotationally invariant insertion of the plastic chip. 120 for example, the cavity 130 from headphones 110 out of Fig. 1. The NFC tag 230 can be centrally located in the plastic chip 120 be embedded. For example, both the NFC tag and the NFC tag can be used. 230 , as well as the casing of the plastic chip 120 essentially exhibit radial symmetry, with the NFC tag 230 such a way into the plastic chip 120 It is embedded that the symmetry axes of the NFC tag 230 and the casing of the plastic chip 120 coincide. Furthermore, the magnetized or magnetizable component can 240 centrally located in the plastic chip 120 be embedded. For example, both the NFC tag and the NFC tag can be used. 230 , the casing of the plastic chip 120, and the magnetized or magnetizable component 240 essentially exhibit radial symmetry, with the NFC tag 230 and the magnetized or magnetizable component 240 such a way into the plastic chip 120 are embedded so that the symmetry axes of the NFC tag 230 , the magnetized or magnetizable component 240 and the casing of the plastic chip 120 coincide. Such a design is shown in the exploded view of the plastic chip. 120 in Fig. Figure 2 illustrates this. The NFC tag can therefore be configured in such a way. 230 and the magnetized or magnetizable component 240 parallel to one of the at least one planar surface of the plastic chip 120 aligned.

[0084] The plastic chip 120 It can have an essentially plano-convex geometry. This means that the plastic chip120 It has a planar surface and a convex surface. In this context, an essentially plano-convex geometry means that minor deviations from a purely plano-convex geometry, such as those found in a plano-convex lens, do not significantly impair its plano-convex character, especially in terms of function. For example, in such a design, the planar surface of the plastic chip can 120 via magnetic attraction force, which is exerted by the magnetized or magnetizable component 240 in interaction with the magnetic surface 140 is caused by the headphones 110 are fixed, while the opposite convex surface of the plastic chip 120 follows the geometry of the earpiece.

[0085] Alternatively, the plastic chip 120have an essentially cylindrical geometry. In this context, an essentially cylindrical geometry means that the external appearance of the plastic chip is 120 It has a cylindrical geometry, whereby minor deviations from a purely cylindrical geometry, for example due to production, do not pose a limitation. Rather, this geometry allows for rotationally invariant insertion of the plastic chip. 120 for example, the cavity 130 from headphones 110 out of Fig. 1. The option to select any one of the two planar surfaces of the plastic chip remains. 120 essentially in contact with, for example, the magnetic surface 140 out of Fig. to bring 1.

[0086] The plastic chip 120 can be a structure made up of two separate halves 210 and 220This allows for the easy embedding of components, such as the NFC tag. 230 and the magnetized or magnetizable component 240 The two halves of the plastic chip 210 and 220 Following the embedding of components, they can be welded together using ultrasonic welding, thus forming the plastic chip 120 form a closed component.

[0087] The NFC tag 230 It could, for example, be a passive tag, allowing communication between an NFC reader, such as the NFC reader of the headphones. 110 , and the NFC tag 230 Active-passive communication can take place. For example, the NFC reader of the headphones can 110 emit an electromagnetic field, with the energy being transferred through the NFC tag 230 is recorded and the NFC tag 230so that it can execute the received commands. Continuing this example, in the case of reading the NFC tag... 230 the electromagnetic field of the NFC reader is weakened or the modulated signal is reflected out of phase, allowing the NFC reader to see the stored information.

[0088] The plastic chip 120 It can be dimensioned so that it essentially has a cylindrical geometry and a diameter large enough for children to easily grasp the plastic chip. 120 cannot be swallowed, and still has a height large enough to accommodate an embedded NFC tag. The diameter of the plastic chip 120 , which is large enough for children to grasp the plastic chip 120 Being unable to swallow it minimizes the risk of choking for children from swallowing the plastic chip. 120 In addition to the height of the plastic chip 120In addition to the size of the chip, which is large enough to accommodate an embedded NFC tag, other factors can also influence the height of the plastic chip. 120 This can be influenced. For example, the height can be chosen to be large enough to accommodate the NFC tag. 230 nor the magnetized or magnetizable component 240 to be able to embed and / or embed any other components. Furthermore, the height of the plastic chip can be adjusted. 120 be chosen so that the plastic chip 120 a criterion for flexural strength is met, which prevents breakage or plastic deformation of the component. A concrete example is the plastic chip. 120 have a diameter of between 40 millimeters and 55 millimeters and a height of between 3 millimeters and 10 millimeters.

[0089] The plastic chip 120 can there be a depression on one side 250for attaching a labeling sticker. In this design, the labeling sticker can indicate which audio content is associated with the corresponding plastic chip. 120 with embedded NFC tag 230 can be unlocked for playback. The indentation 250 It can have any geometry, for example cylindrical, with a depth of, for example, 0.5 millimeters, 0.8 millimeters or 1.0 millimeters and a diameter that is arbitrarily large, but at least smaller than the diameter of the plastic chip. 120 , is.

[0090] The plastic chip can be configured so that, when brought into close proximity to the NFC reader, it transmits an RFID code to the reader corresponding to its orientation. This allows different audio content to be unlocked for automatic playback depending on the chip's orientation relative to the reader. One example of this implementation is a cylindrical plastic chip. 120 magnetically attached to the headphones 110 They are attached by first attaching a planar surface of the plastic chip. 120and the planar magnetic surface of the headphones are essentially brought into contact with the RFID chip to unlock and automatically play back the audio content stored on the headphones by transmitting a corresponding first RFID code. Continuing this example, the plastic chip can be flipped over after successful playback of the first audio content, thus revealing the second planar surface of the plastic chip. 120 and the planar magnetic surface of the headphones is essentially brought into contact, and a second audio track is released for automatic playback by transmitting a corresponding second RFID code. Analogous to vinyl records and audio cassettes, the plastic chip in this design functionally has an A-side and a B-side, or a front and back.

[0091] For the sake of completeness, it should be noted that in an alternative design of the plastic chip 120 When brought into the immediate vicinity of the NFC reader, it can transmit an RFID code to the NFC reader, regardless of its orientation relative to the reader. For example, in one embodiment, the cylindrical plastic chip can be magnetically attached to the headphones. 110 They can be attached by attaching a planar surface of the plastic chip. 120 and the planar magnetic surface of the headphones are essentially brought into contact with it to unlock and automatically play back audio content stored on the headphones. In this configuration, it is irrelevant which of the two planar surfaces of the plastic chip is affected. 120 The planar magnetic surface of the headphones is essentially brought into contact with the plastic chip, as it is independent of the headphone. 110The opposite side can unlock the same audio content for playback.

[0092] In one embodiment, the plastic chip is characterized in that, when the plastic chip is brought into the immediate vicinity of the NFC reader, it is configured to transmit a second RFID code to the NFC reader, depending on the orientation of the plastic chip in relation to the NFC reader.

[0093] Fig. 3A to Fig. 3D shows a schematic representation of a cavity according to the invention. 130 the headphones 110 . Fig. 3A shows a schematic top view of the cavity 130 after Fig. 1. The planar magnetic surface 140 the headphones 110 can form the base of a first cavity; in this example, the first cavity can be the cavity 130 Furthermore, the first cavity can have a geometry suitable for the plastic chip. 120to be fixed in the lateral direction. Fig. Figure 3A, for example, shows a circular base of the cavity. 130 , which is suitable, for example, to laterally fix a cylindrical plastic chip of a suitable diameter. Continuing this example, the diameter of the cavity can 130 For example, it could be 1 millimeter, 2 millimeters, or 3 millimeters larger than the outer diameter of the plastic chip. 120 .

[0094] Furthermore, a second cavity can be created. 310 It must be defined on a portion of the base of the first cavity. This enables a mechanism that allows a magnetically attached plastic chip to be... 120 by applying pressure to part of the plastic chip 120 , which in the top view is connected to the second cavity 310 overlapping, into the second cavity 310 is tilted and thus ergonomically positioned away from the headphones 110 can be extracted.

[0095] The area of ​​the second cavity 310 It can be designed to be non-magnetic, so that a magnetic surface 140 magnetically attached plastic chip of the first cavity 120 in case of an unintentional tipping into the second cavity 310 via magnetic attraction back to the magnetic surface 140 the first cavity is drawn. This design advantageously avoids the unintentional loss of the plastic chip. 120 with embedded NFC tag 230 By preventing an unstable, tilted, and therefore misaligned arrangement of the system components, which would be susceptible to contact that would disrupt the magnetic connection. An unintentional tilting of the plastic chip. 120 This can be caused, for example, by a sudden movement or by accidentally applying pressure to part of the plastic chip. 120 , which in the top view is connected to the second cavity310 overlapping, being triggered.

[0096] The first cavity can, for example, have a circular base, while the second cavity 310 defined on a circular segment of this circular base, it forms an inclined plane at a constant angle to the circular base of the first cavity. This specific configuration is found in Fig. Figure 3A shows this. The segment height of the circular segment can be chosen arbitrarily, for example, 25%, 35%, or 50% of the diameter of the first cavity. The constant angle can also be chosen arbitrarily, for example, 10 degrees, 25 degrees, or 40 degrees with respect to the planar base of the first cavity.

[0097] Fig. Figure 3B shows a side view of the schematic representation of a cavity according to the invention. 130 the headphones 110 and illustrates the magnetic surface 140the first cavity and further the second cavity 310 , which in the illustrated embodiment is a planar surface with a constant angle relative to the magnetic surface 140 represents the first cavity.

[0098] Fig. 3C and Fig. 3D shows the side view of the schematic representation of a cavity according to the invention. 130 the headphones 110 in combination with an inserted plastic chip 120 in two different positions. Fig. 3C shows the plastic chip 120 , which is essentially in contact with the magnetic surface 140 the first cavity and is attracted to the magnetic surface by magnetic attraction 140 is pulled. Part of the plastic chip overlaps with the second cavity. 310 , so that a cavity exists under this part of the plastic chip. If pressure is now applied to this part of the plastic chip,120 exercised (illustrated by the arrow in Fig. 3C), this can be inserted into the second cavity 310 tip and thus into the Fig. The position can be represented in 3D.

[0099] From the in Fig. The plastic chip can be positioned in 3D. 120 ergonomically from the cavity 130 can be extracted (illustrated by the arrow in Fig. 3D). If the plastic chip 120 If it is not removed from this position, it can also automatically return to the magnetic base. 140 to be drawn, in the event that the base area of ​​the second cavity 310 is not magnetic.

[0100] Fig. Figure 4 shows a schematic representation. 400 An interactive headphone system according to the invention for storing and playing back audio content, according to one embodiment. The headphone setup is shown schematically. 110and from plastic chip 120 As mentioned above, the headphones include 110 the NFC reader 410 and the storage 420 In storage 420 One or more audio files, for example, audio file 1 430 and audio file 2 450, are stored. Each audio file is assigned a unique identifier, for example, unique identifier 1 440 for audio file 1 430 and unique identifier 2 460 for audio file 2 450. Any number of additional audio files with associated unique identifiers can be stored on the device. 420 the headphones 110 be stored. Access to the data stored on the storage device. 420 The saved audio files are locked. The headphones 110 can still hold a magnet 470 , especially the magnetic surface 140 , as already introduced above. Furthermore, the headphones can 110 the infrared sensor 160included, as already introduced above.

[0101] The plastic chip 120 includes the RFID code 480 and the NFC tag 230 assigned unique identifier 490 The plastic chip 120 a magnetized or magnetizable component may still be 240 include, as already introduced above.

[0102] Will the NFC tag 230 in the immediate vicinity of the NFC reader 410 the headphones 110 brought (illustrated by the solid arrow in Fig. 4) The headphones are configured using the NFC tag. 230 contained RFID code 480 to read out the unique identifier 490 from the RFID code 480 to determine the unique identifier 490 with unique identifiers 440 and 460 from the storage area 420 saved audio files 430 and 450to compare, to unlock a corresponding audio file in case the unique identifier 490 with a unique identifier 440 , 460 a saved audio file 430 , 450 matches, and starts playback of the corresponding audio file. For example, the NFC reader can 410 determine that the unique identifier 490 does not match the unique identifier 1 440, the unique identifier 490 However, it matches the unique identifier 2 460, and in response to this finding, the headphones 110 Unlock audio file 2 450 and automatically start playback of audio file 2 450.

[0103] As introduced above, a magnetic attraction (illustrated by the dashed arrow in Fig. 4) between headphones 110 and plastic chip 120 through the magnet on one side 470, especially the magnetic surface 140 , and on the other hand, by the magnetized or magnetizable component 240 This is ensured when the plastic chip 120 into the immediate vicinity of the headphones 110 is brought.

[0104] Furthermore, as already introduced above, the infrared sensor 160 be configured to detect whether the headphones 110 is worn by a person. If the NFC tag 230 in the immediate vicinity of the NFC reader 410 In one configuration, the automatic starting of the audio file playback can only occur if the infrared sensor is present. 160 detected that the headphones 110 is worn by a person. Furthermore, in such a configuration, ongoing playback can be interrupted if the infrared sensor 160 detected that the headphones 110has been removed / is no longer being worn by a person.

[0105] Fig. Figure 5 shows a schematic flowchart 500 An embodiment of the interactive headphone system according to the invention. The flowchart 500 is through the interactive headphone system 100 , especially the headphones 110 , executed when the NFC tag 230 with a unique identifier 490 , which have a unique identifier 440 , 460 one in the attic 420 saved audio file 430 , 450 corresponds to the immediate vicinity of the NFC reader 410 is brought 500 starts with step 510 , the processing of the RFID code 480 , which is the unique identifier of the NFC tag 490 contains the unique identifier of the audio file. In the next step 520 The unique identifier will be 490of the NFC tag 230 with the unique identifier of the storage device 420 correlated with the saved audio file. This audio file is used in step 530 First unlocked. Step 540 This includes automatically starting playback of the audio file. Optionally, step [number] follows. 550 , which includes automatically stopping the playback of the audio file. Reference symbol list 100 Interactive Headphone System 110 headphones 120 plastic chips 130 cavities 140 Magnetic surface 150 ribbing 160 IR sensor 210 First half of the plastic chip 220 Second half of the plastic chip 230 N FC-Tag 240 Magnetized or magnetizable component 250 in-depth 310 Second cavity 410 NFC reader 420 storage 430 Audio file 1 440 Unique identifier 1 450 Audio file 2 460 Unique identifier 2 470 Magnet 480 RFID code 490 Unique identifier of the NFC tag 500 Flowchart 510 - 550 steps of the flowchart

Claims

[1] Interactive headphone system (100) for storing and playing back audio content, comprising: an NFC tag (230) with an RFID code (480) containing a unique identifier (490) of the NFC tag; and a pair of headphones (110), comprising: one or more controls for operating the headphones (110); a memory (420) that stores one or more audio files (430; 450), wherein each of the one or more audio files (430; 450) is associated with a unique identifier (440; 460), and wherein the one or more audio files (430; 450) are locked so that access is only possible by an RFID code containing a unique identifier corresponding to the unique identifier (440; 460) of a respective audio file (430; 450); and an NFC reader (410), wherein, when the NFC tag (230) with a unique identifier (490) corresponding to the unique identifier (440; 460) of a respective audio file (430; 450) is brought into the immediate vicinity of the NFC reader (410), the headphones (110) are configured to: Processing (510) the RFID code (480) which contains the unique identifier of the NFC tag (490); Correlate (520) the unique identifier of the NFC tag (490) with the unique identifier (440; 460) of the audio file stored in memory (430; 450); and Unlocking (530) the audio file (430; 450), the unlocked audio file can be accessed by one or more of the controls, allowing a passage or song to be skipped or the last passage or song to be returned. [2] System according to claim 1, characterized in that the headphones (110) are further configured to automatically start playback (540) of the unlocked audio file (430; 450). [3] System according to claim 1 or 2, characterized in that playback is automatically stopped (550) when the NFC tag (230) is removed from the immediate vicinity of the NFC reader (410). [4] System according to one of claims 1 to 3, characterized in that the NFC tag (230) is embedded in a chip, in particular made of plastic (120). [5] System according to claim 4, characterized in that the headphones further comprise a magnet (470), in particular a magnetic surface (140), in the immediate vicinity of the NFC reader (410) and a magnetized or magnetizable component (240) is embedded in the chip, so that the chip can be magnetically attached to the headphones (110) for unlocking and playing back audio content. [6] System according to claim 5, characterized in that the chip, the NFC tag (230) and the magnetized or magnetizable component (240) have substantially radial symmetry and an identical axis of symmetry, wherein the NFC tag (230) and the magnetized or magnetizable component (240) in particular have a substantially ring-shaped geometry. [7] System according to claim 5 or 6, characterized in that the magnetic surface (140) of the headphone (110) forms a base surface of a first cavity (130), wherein the first cavity (130) has a geometry suitable for fixing the chip in a lateral direction. [8] System according to claim 7, characterized in that a second cavity (310) is defined on a part of the base area of ​​the first cavity, so that the magnetically attached chip can be tilted into the second cavity (310) by applying pressure to the chip surface that overlaps with the second cavity (310) and thereby removed from the headphones (110). [9] System according to claim 8, characterized in that the surface of the second cavity is not magnetic, so that the chip attached to the magnetic base surface is attracted back to the magnetic base surface of the first cavity by magnetic attraction force in the event of an unintentional tipping into the second cavity (310). [10] System according to one of claims 1 to 9, characterized in that the played file, the unique identifier of the NFC tag (490), and a timestamp are recorded, so that after the end of a running playback, the playback of the audio file (430; 450) is seamlessly continued when the NFC tag (230) is brought back into the immediate vicinity of the NFC reader (410). [11] System according to one of claims 1 to 10, characterized in that the headphones (110) further comprise an infrared sensor (160) configured to detect whether the headphones (110) are being worn by a person and the automatic playback of the audio file (430; 450) only occurs if the infrared sensor (160) detects that the headphones (110) are being worn by a person. [12] System according to claim 4, characterized in that a magnetized or magnetizable component (240) is further embedded in the chip, so that the chip can be attached to a surface by magnetic attraction. [13] System according to claim 12, characterized in that the chip, the NFC tag (230) and the magnetized or magnetizable component (240) have substantially radial symmetry and an identical axis of symmetry, wherein the NFC tag (230) and the magnetized or magnetizable component (240) in particular have a substantially ring-shaped geometry. [14] System according to one of claims 4, 12 and 13, characterized in that the chip, when brought into the immediate vicinity of the NFC reader (410), is configured to transmit an RFID code corresponding to the orientation of the chip relative to the NFC reader (410). [15] Headphones (110) with - a memory (420) on which one or more audio files (430; 450) are stored, wherein each of the one or more audio files (430; 450) is associated with a unique identifier (440; 460), and wherein the one or more audio files (430; 450) are locked so that access is only possible by an RFID code containing a unique identifier corresponding to the unique identifier (440; 460) of a respective audio file (430; 450); - one or more controls for operating the headphones (110); and - an NFC reader (410) configured to read a unique identifier (490) of an NFC tag (230) brought into the immediate vicinity of the NFC reader (410) of the headphones (110), thereby causing the headphones (110) to: to compare the unique identifier of the NFC tag (490) with unique identifiers (440; 460) of audio files (430; 450) stored in memory; and to unlock a corresponding audio file (430; 450) in the event that the unique identifier of the NFC tag (490) matches a unique identifier (440; 460) of a stored audio file (430; 450), the unlocked audio file can be accessed by one or more of the controls, allowing a passage or song to be skipped or the last passage or song to be returned. [16] Headphones according to claim 15, wherein the headphones (110) are further configured to automatically start playback (540) of the unlocked audio file (430; 450). [17] Headphones according to claim 16, characterized in that playback is automatically stopped when the NFC tag (230) is removed from the immediate vicinity of the NFC reader (410). [18] Headphones according to one of claims 15 to 17, characterized in that the headphones further comprise a magnet (470), in particular a magnetic surface (140), in the immediate vicinity of the NFC reader (140), so that a further device, which in addition to the NFC tag (230) further comprises a magnetic or magnetizable component (240), can be magnetically attached to the headphones (110) for unlocking and playing back audio content. [19] Headphones according to claim 18, characterized in that the magnetic surface (140) forms a base surface of a first cavity (130). [20] Headphones according to claim 19, characterized in that a second cavity (310) is defined on a part of the base area of ​​the first cavity, so that the further magnetically attached device can be tilted and thereby removed from the headphones (110). [21] Headphones according to claim 20, characterized in that the surface of the second cavity is not magnetic, so that the device attached to the magnetic base surface is attracted back to the magnetic base surface of the first cavity by magnetic attraction force in the event of an unintentional tipping into the second cavity (310). [22] Headphones according to one of claims 15 to 21, characterized in that the headphones are configured to record the played file, the unique identifier of the NFC tag (490), and a timestamp, so that after the end of a running playback, the playback of the audio file (430; 450) is seamlessly continued when the NFC tag (230) is brought back into the immediate vicinity of the NFC reader (410).

Images