Disclosure of Invention
In order to overcome the problems in the related art, the specification provides a data interaction method, a data interaction device, an electronic device and a portable device.
According to a first aspect of embodiments of the present specification, there is provided a data interaction method, the method including:
establishing a connection with the electronic device based on short-range wireless communication after determining that light emitted at the target light emitting frequency is detected;
and after the connection is established, performing data interaction with the electronic equipment.
Optionally, the light is detected by a light sensor.
Optionally, the light sensor detects the light, and is performed after determining that an object exists within a set distance range.
Optionally, before establishing a connection with the electronic device based on the short-range wireless communication, the method further includes: and determining that the object exists in the set distance range.
Optionally, the distance sensor detects whether an object exists in the set distance range.
Optionally, the target light emitting frequency is different from the light emitting frequency of the illumination lamp.
Optionally, the establishing a connection with an electronic device based on short-range wireless communication includes:
receiving a connection message based on short-range wireless communication broadcast by an electronic device, and establishing connection with the electronic device based on the connection message.
Optionally, the data interacted with the electronic device includes one or more of the following information:
payment voucher information, bus information, subway station information, bus ticket information, or train ticket information.
According to a second aspect of embodiments of the present specification, there is provided a data interaction apparatus, including:
a connection module for: establishing a connection with the electronic device based on short-range wireless communication after determining that light emitted at the target light emitting frequency is detected;
an interaction module to: and after the connection is established, performing data interaction with the electronic equipment.
According to a third aspect of embodiments herein, there is provided an electronic apparatus including:
a light emitting unit for: emitting light at a target emission frequency;
a short-range wireless communication unit to: establishing a connection with a portable device, wherein the portable device is configured to: establishing the connection upon detection of light emitted at the target lighting frequency;
a processing unit to: and carrying out data interaction with the portable equipment.
Optionally, the housing of the electronic device has a groove, and the light emitted by the light emitting unit passes through the groove.
Optionally, the light emitting unit includes: an LED.
Optionally, the processing unit is further configured to: and controlling the starting or the closing of the light-emitting unit based on whether an object exists in the set distance range.
The processing unit is further configured to: and controlling the short-distance wireless communication unit to be started or closed based on whether an object exists in the set distance range.
Optionally, the system further comprises a distance sensor for: it is determined whether an object is present within the set distance range.
Optionally, the processing unit is further configured to: and sending the data sent by the portable equipment to a server.
According to a fourth aspect of embodiments of the present specification, there is provided a data interaction method, including:
sending a control instruction of turning on or off to a light-emitting unit, wherein the light-emitting unit is used for: emitting light at a target emission frequency;
sending a control instruction to turn on or off a short-range wireless communication unit, the short-range wireless communication unit being configured to establish a connection with a portable device, wherein the portable device is configured to establish the connection upon detection of light emitted at the target light emission frequency;
and after the connection is established, performing data interaction with the portable equipment.
According to a fifth aspect of embodiments herein, there is provided a portable device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the following method when executing the program:
establishing a connection with the electronic device based on short-range wireless communication after determining that light emitted at the target light emitting frequency is detected;
and after the connection is established, performing data interaction with the electronic equipment.
According to a sixth aspect of embodiments herein, there is provided an electronic device comprising a light emitting unit, a short-range wireless communication unit, a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the following method when executing the program:
sending a control instruction of turning on or off to the light emitting unit, wherein the light emitting unit is used for: emitting light at a target emission frequency;
sending a control instruction to turn on or off the short-range wireless communication unit, the short-range wireless communication unit being configured to establish a connection with a portable device, wherein the portable device is configured to establish the connection upon detection of light emitted at the target light emission frequency;
and after the connection is established, performing data interaction with the portable equipment.
The technical scheme provided by the embodiment of the specification can have the following beneficial effects:
the embodiment of the specification is based on light detection, the electronic device can emit light according to the target light emitting frequency, the portable device can determine whether the portable device is close to the electronic device, and if the portable device is close to the electronic device, the light emitted by the electronic device at the target light emitting frequency can be detected, so that the portable device can be prevented from being connected with other electronic devices by mistake. The electronic device and the portable device can perform data interaction after connection is established, and the embodiment has no requirement on a mobile communication network, and can also realize data interaction under the condition that the electronic device and the portable device are in an offline state.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the specification.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the specification, as detailed in the appended claims.
The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present specification. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In most mobile payment scenes, the payee device scans the payment code provided by the user by using the camera, so that a certain requirement is imposed on the quality of the camera, if the quality of the camera is poor and the focusing is slow, the condition that the payment code is slow to identify may be caused, the payment code may not be aligned with the camera, and the user is required to adjust the convenient device to better complete the payment. On the other hand, data is transmitted from the user portable device to the payee device by means of camera recognition.
Based on this, please refer to fig. 1, which is a scene diagram of a data interaction method according to an exemplary embodiment shown in this specification, for convenience of distinction, in this embodiment, a device held by a user is referred to as a portable device, and in fig. 1, a smart phone is taken as an example, and the portable device may also be a device such as smart glasses or a smart watch. Devices that interact with data from portable devices are referred to as electronic devices that may be owned by various service merchants, which may be deployed within the physical areas where the merchants provide commercial services. For example, in an online store-out scene, the electronic device may be deployed in a commodity settlement area, and in a traffic trip scene, the electronic device may be deployed on a bus, a subway entrance, a train entrance, and the like.
In order to realize mutual data transmission between the portable device and the electronic device, an alternative implementation manner is that both the electronic devices are connected to a server by using a network, and data is transmitted through the server, and this manner depends on the network signal strength. However, in a subway or other scenes, a situation that a network signal is unstable often occurs in many times, a situation that a transmission speed is very slow and even a transmission failure occurs when data is transmitted through a server, and a portable device of a user is in an off-line state for many reasons, so that a situation that the user cannot complete payment and exit due to the fact that data cannot be transmitted occurs.
Another alternative is to establish a connection between the portable device and the electronic device by means of a short-range wireless communication technology, such as bluetooth or near field communication. However, around the area where the electronic device is deployed, there may be many other users, each of whom holds the electronic device, and the electronic device may be misconnected to the other users. As an example, a plurality of electronic devices capable of controlling an access gate may be deployed at an entrance and an exit of a subway, where there may be many users at the entrance and the exit of the subway, and an electronic device of a certain gate should be connected to a portable device of a user a who is preparing to exit the gate, however, since a portable device of another user B near the user a is very close to the electronic device, the electronic device is connected to a portable device of the user B, so that the portable device of the user a cannot perform data interaction, and eventually, the user a cannot exit the gate in time.
Based on this, an embodiment of the present specification proposes a data interaction scheme based on light detection, as shown in fig. 2A, which is a data interaction schematic diagram shown in the present specification according to an exemplary embodiment, where the electronic device in fig. 2A is capable of emitting light according to a target light emitting frequency, and in an embodiment, the portable device may perform the steps shown in fig. 2B:
in step 202, upon determining that light emitted at the target light emitting frequency is detected, a connection is established with the electronic device based on short-range wireless communication.
In step 204, data interaction is performed with the electronic device after the connection is established.
In this embodiment, after detecting light emitted at the target light emitting frequency, the portable device can determine that the portable device is closer to the electronic device, and then establish a connection with the electronic device based on short-range wireless communication, so that the electronic device and the portable device can perform data interaction. In an alternative implementation, the hardware structure of the electronic device may be as shown in fig. 3A, and the electronic device includes:
a light emitting unit 310 for: light of a target light emitting frequency is emitted.
A short-range wireless communication unit 320 for: establishing a connection with a portable device, wherein the portable device is configured to: establishing the connection upon detection of light emitted at the target lighting frequency.
A processing unit 330 configured to: and carrying out data interaction with the portable equipment.
Fig. 3A shows a schematic diagram of a hardware structure of an electronic device, and fig. 3A illustrates a hardware implementation of the electronic device; in other examples, the light emitting unit and the short-range wireless communication unit built in the electronic device may be controlled by the processing unit, and the processing procedure of the processing unit may be implemented by software or programmable logic device, as shown in fig. 3B, the electronic device may perform the following steps to perform data interaction with the portable device:
in step 302, a control command for turning on or off is sent to a light emitting unit, where the light emitting unit is configured to: light of a target light emitting frequency is emitted.
In step 304, a control instruction to turn on or off is issued to a short-range wireless communication unit for establishing a connection with a portable device for establishing the connection upon detection of light emitted at the target light emitting frequency.
In step 306, after the connection is established, data interaction is performed with the portable device.
The Light Emitting unit may include Light Emitting devices such as an LED (Light Emitting Diode) and a fluorescent lamp, and the Light Emitting frequency of the Light Emitting devices may be set according to requirements, which is referred to as a target Light Emitting frequency in this embodiment. The purpose of setting the target light-emitting frequency is to allow the portable device to determine whether the portable device is approaching the electronic device, and if the portable device is approaching the electronic device, the light emitted by the electronic device at the target light-emitting frequency can be detected, so that the portable device can be prevented from being mistakenly connected with other electronic devices. The target light-emitting frequency can be flexibly configured according to actual needs, and because the daily life places are all provided with illuminating lamps, in order to improve the detection accuracy, the target light-emitting frequency can be different from the light-emitting frequency of the illuminating lamps, for example, the light-emitting frequency can be 120ms in one period, and the like, in the period, the light can be turned on for the first 60ms, and then turned off for the second 60 ms.
In a specific implementation, as an example, the light emitting unit may be disposed on a surface of a housing of the electronic device, and the portable device may detect light emitted by the electronic device after approaching the electronic device; in other examples, the light emitting unit may be disposed inside the electronic device, and the surface of the electronic device may have a transparent region so that the light of the light emitting unit can be emitted from the inside, so that the portable device can detect the light.
In another example, as shown in fig. 3C, which is a schematic structural diagram of an electronic device shown in this specification according to an exemplary embodiment, a housing of the electronic device may have a groove, and the light emitted by the light emitting unit passes through the groove, and the groove may limit a manner in which the portable device detects light, and the portable device may detect the light emitted by the electronic device after being inserted into the groove, so that interference of other light sources may be reduced, and the light detection accuracy may be improved. Optionally, the light emitting unit may also be disposed in the recess such that light emitted by the light emitting unit is detected by the portable device in the recess; in other examples, the light emitting unit may be disposed inside the electronic device, and the recess may have a transparent region therein so that light of the light emitting unit may be emitted from the inside and so that the portable device may detect the light after being inserted into the recess.
Other devices of electronic equipment can set up in the recess as required like bluetooth module, also can set up other positions such as electronic equipment's surface, and other conventional modules (like detecting the NFC module of public transit NFC card etc.) can set up other positions such as electronic equipment's surface as required.
Optionally, the light-emitting unit may continuously emit light, and in practical applications, for cost and lifetime considerations, the light-emitting unit may be turned on only when the light-emitting unit needs to be detected by the portable device, and the light-emitting unit may be turned off when the detection is not needed. Based on this, the present embodiment provides a distance-based light emitting unit control method, and the processing unit is further configured to: and controlling the starting or the closing of the light-emitting unit based on whether an object exists in the set distance range.
The set distance range can be determined through testing, and can be a set smaller distance to improve the accuracy of the light detected by the portable device. In other examples, if the groove is formed, the groove size may be determined based on the groove size; for example, where the distance from the portable device to the electronic device is below the size of the recess, the electronic device may determine that there is an object entering, which is very likely to be a portable device, and may notify the light emitting unit to activate for the portable device to detect light. Alternatively, the electronic device may be configured with a distance sensor, and determine whether an object exists within a set distance range according to a detection result of the distance sensor.
Accordingly, in the case of a portable device, the light may be detected by a light sensor, and the detection timing of the light sensor may be determined based on the distance, and the light sensor may be called to detect the light after the presence of an object within a set distance range is determined. In this case, the presence or absence of an object within a set distance range can be detected by a distance sensor built in the portable device.
On the other hand, considering that there are lights in many occasions in daily life, there is a possibility that the portable device may have an error detection, and there is a possibility that the portable device may detect light having the same frequency as the target light emission frequency, based on this, the method of the embodiment further includes, before establishing a connection with the electronic device based on short-range wireless communication: and determining that the object exists in the set distance range. The present embodiment is based on dual authentication of distance and light so that the portable device can establish a connection with a device that desires to connect with a high probability. For example, if the distance sensor on the portable device is blocked by another object but does not detect light having the same emission frequency as the target object, the connection is not necessary in such a case, and the erroneous connection can be avoided.
The short-range Wireless communication of the embodiment may include bluetooth, Wi-Fi (Wireless Fidelity), near field communication, UWB (Ultra wide band, a carrier-less communication technology), HomeRF (home radio frequency), or the like. Taking bluetooth as an example, the operating mode of bluetooth includes a master-slave mode, and the operating modes of the electronic device and the portable device can be flexibly determined according to the needs, which is not limited in this embodiment. As an example, it may be that the electronic device is operating in a slave mode, and the electronic device may broadcast a connection message based on short-range wireless communication for the portable device to connect; and when the portable device works in the master mode, the portable device can: receiving a connection message based on short-range wireless communication broadcast by the electronic equipment, and establishing connection with the electronic equipment according to the connection message.
Optionally, in this embodiment, the electronic device and the portable device may further be connected by combining Signal Strength, for example, when the electronic device and the portable device are closer, both of them may detect that the Signal Strength of the other is stronger, so that the connection may be established according to the RSSI (Received Signal Strength Indication) Strength, for example, the device with stronger Signal Strength may be selected to establish the connection. Based on this, both the electronic device and the portable device have some autonomous selection capability for connection, e.g., the electronic device may consider that no portable device is close after finding the distance above a threshold, and may stop or block the connection if there are devices attempting to connect.
Based on the above embodiments, the electronic device and the portable device may perform data interaction after establishing connection, and this embodiment does not require the electronic device to configure a device with a higher cost, does not require a mobile communication network, and may also achieve data interaction when the electronic device and the portable device are in an offline state.
The embodiment can be applied to various scenes, and the interacted data can comprise one or more of the following information: payment voucher information, bus information, subway station information, bus ticket information, train ticket information, or the like. Several application scenarios are listed below and illustrate data interacted between an electronic device and a portable device.
First, a public traffic scenario (fixed billing as an example)
The bus scene in this embodiment is described by taking fixed billing as an example, and the electronic device in this embodiment may be deployed on a bus, as an example, a processing flow in the electronic device may be as shown in fig. 4A, where a distance sensor built in the electronic device may continuously monitor, and if the monitoring distance is higher than a threshold, it is described that no mobile phone enters a groove to be connected, and the monitoring may be continuously performed. When the recognition distance is reduced and the distance is lower than the threshold value, a mobile phone can enter the groove, and an instruction is sent to the light-emitting unit to wake up the LED lamp to emit light (the light can be light in one period of 120ms, the light is on in the first 60ms in the period, and the light is off in the last 60 ms). When the distance sensor of the electronic device detects that the distance becomes large, for example, the distance is changed back to a default value or no object is detected, an instruction can be sent to turn off the light-emitting unit. The electronic device in this embodiment includes a BLE (bluetooth) module, and the module may continue to broadcast a message to wait for connection of the BLE module at the mobile phone end.
The user's portable device (this embodiment takes a mobile phone as an example) may be installed with APPs such as third party payment APPs and APPs for providing subway seating services. The portable device may perform the steps of the embodiment shown in fig. 4B, and after the user gets on the bus, the user may start the APP installed in the portable device to wake up the distance sensor built in the portable device. When the front half part of the mobile phone of a user extends into the groove of the electronic equipment, the distance sensor arranged in the mobile phone recognizes that the distance is close, and the light sensor on the mobile phone starts to detect whether light with the target light-emitting frequency exists. When the mobile phone recognizes the light with the period change of 120ms, the mobile phone considers that the mobile phone is already in the electronic equipment, and the BLE module is used for starting to be connected with the BLE module in the tool. The mobile phone can select the BLE module of the device with the highest RSSI strength for connection.
In this embodiment, the data interaction manner may include:
(1) the electronic device transmits data to the portable device:
the electronic device can send data representing the fare parameters to the portable device, and based on the data, the payment service party can deduct the fare from the payment account of the user. By way of example, a payment device APP may be installed in the portable device, the electronic device transmits data to the payment device, and the payment device may send the received data (or send other notification messages indicating fee deduction, etc.) to the payment device server. And after the payment bank server receives the payment bank, the payment bank server can deduct money from the payment account of the user, so that the transaction processing of the user on the bus fee is completed.
(2) The portable equipment transmits data to the electronic equipment:
the portable device can send data representing a payment certificate (token) such as a user identity to the electronic device, the electronic device receives the data transmitted by the portable device, and the riding fee of the user can be deducted based on the payment certificate. As an example, a payment apparatus APP may be installed in the portable device, the payment apparatus sends a payment credential to the electronic device, and the electronic device sends the received payment credential to the payment apparatus server (the electronic device may directly send to the payment apparatus server, or the electronic device may send to the payment apparatus server through another server). And after the payment bank server receives the payment bank, deduction can be carried out on the payment account of the user, so that payment processing of the user on the bus fee is completed.
Optionally, the electronic device may further transmit information such as bus routes to the portable device, so that the portable device displays the information for the user to look up.
Second, subway scenario (taking segmented charging as an example)
In some subway scenes, a segmented charging mode is adopted, and the method needs to know the inbound information and the outbound information of a user. In such a scenario, the electronic device of the embodiment may be configured at an entrance of a site, and the electronic device may be used as a device for controlling an entrance/exit gate; the portable equipment of the user can be provided with third-party payment APP or APP such as subway riding service. At an entrance, a user can start an APP installed in a portable device, the portable device can send data representing a payment certificate (token) such as a user identity to an electronic device, and the electronic device can control a gate to be released after receiving the data transmitted by the portable device and can also send the received data to a server; in other examples, the electronic device may transmit the site information to a portable device of the user, and optionally, the portable device may transmit the received data to the server.
When the user needs to exit the gate, the portable device of the user performs data interaction with the electronic device at the exit, and it can be understood that the portable device transmits the data to the electronic device, or the electronic device transmits the data to the portable device, and based on the entrance site information and the exit site information, the fee required to be paid by the user can be determined.
Third, non-payment scenario for high-speed rail
This embodiment is similar to the subway scenario, and can be used for gates at entrances and exits, but may not involve payment. For example, the user may buy a ticket (e.g., a train ticket, a subway ticket, a bus ticket, or a sight spot ticket, etc.) in advance, and the APP may store the ticket in the form of an electronic card, an electronic ticket, or the like, where the electronic ticket corresponds to inbound information, outbound information, user identity information, or cost information, etc.
The electronic device of the embodiment can be configured at the exit and/or entrance of the station, the electronic device can be used as a device for controlling the access gate, and the electronic ticket is stored in the installation APP of the portable device of the user. At the entrance and exit, a user can start an APP installed in the portable equipment, the portable equipment can send data containing ticket information to the electronic equipment, and after the electronic equipment receives the data transmitted by the portable equipment, information checking can be carried out, and whether the gate is released or not is controlled based on a checking result.
Fourth, offline payment
In this embodiment, the electronic device may be deployed in a settlement area of a store, the portable device of the user may be installed with payment APPs such as a third-party payment APP, the user starts the APP installed in the portable device, the portable device may send data representing payment credentials (token) such as a user identity to the electronic device, and after receiving the data transmitted by the portable device, the electronic device may send the received data to the server, so that the server deducts a payment account of the user.
As can be seen from the foregoing embodiments, data interaction between the electronic device and the portable device may involve some sensitive information, and optionally, for data security, the data interacted between the electronic device and the portable device may be encrypted to form an encrypted piece of data. By sharing the same encryption and decryption algorithm, the electronic equipment and the portable equipment can realize data interaction and improve the security of the data interaction.
The data interaction device of the present specification can be applied to portable devices, such as smart phones, smart watches, and the like. The device embodiments may be implemented by software, or by hardware, or by a combination of hardware and software. Taking a software implementation as an example, as a device in a logical sense, the device is formed by reading corresponding computer program instructions in the nonvolatile memory into the memory through a processor in which the data is interacted, and running the computer program instructions. From a hardware aspect, as shown in fig. 5, which is a hardware structure diagram of a portable device in which a data interaction apparatus is located in the embodiment of the present disclosure, except for the processor 510, the memory 530, the network interface 520, and the nonvolatile memory 540 shown in fig. 5, the portable device in which the apparatus 531 is located in the embodiment may also include other hardware according to an actual function of the portable device, and details of this are not repeated.
As shown in fig. 6, fig. 6 is a block diagram of a data interaction device shown in the present specification according to an exemplary embodiment, the device including:
a connection module 61 for: establishing a connection with the electronic device based on short-range wireless communication after determining that light emitted at the target light emitting frequency is detected;
an interaction module 62 for: and after the connection is established, performing data interaction with the electronic equipment.
Optionally, the light is detected by a light sensor.
Optionally, the light sensor detects the light, and is performed after determining that an object exists within a set distance range.
Optionally, before establishing a connection with the electronic device based on short-range wireless communication, the connection module further includes: and determining that the object exists in the set distance range.
Optionally, the distance sensor detects whether an object exists in the set distance range.
Optionally, the target light emitting frequency is different from the light emitting frequency of the illumination lamp.
Optionally, the connection module is further configured to:
receiving a connection message based on short-range wireless communication broadcast by an electronic device, and establishing connection with the electronic device based on the connection message.
Optionally, the data interacted with the electronic device includes one or more of the following information:
payment voucher information, bus information, subway station information, bus ticket information, or train ticket information.
Accordingly, embodiments of the present specification also provide a portable device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the following method when executing the program:
establishing a connection with the electronic device based on short-range wireless communication after determining that light emitted at the target light emitting frequency is detected;
and after the connection is established, performing data interaction with the electronic equipment.
Accordingly, embodiments of the present specification also provide an electronic device, including a light-emitting unit, a short-range wireless communication unit, a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the following method when executing the program:
sending a control instruction of turning on or off to the light emitting unit, wherein the light emitting unit is used for: emitting light at a target emission frequency;
sending a control instruction to turn on or off the short-range wireless communication unit, the short-range wireless communication unit being configured to establish a connection with a portable device, wherein the portable device is configured to establish the connection upon detection of light emitted at the target light emission frequency;
and after the connection is established, performing data interaction with the portable equipment.
The implementation process of the functions and actions of each module in the data interaction device is specifically detailed in the implementation process of the corresponding step in the data interaction method, and is not described herein again.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, wherein the modules described as separate parts may or may not be physically separate, and the parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution in the specification. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Other embodiments of the present description will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.
It will be understood that the present description is not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.
The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.