A control method, system, and clothes drying machine

Abstract

This application relates to a control method, system, and clothes drying rack. The method includes the following steps: acquiring audio information for playback; monitoring the working status of the clothes drying rack; when the clothes drying rack is detected to be in a user-operated drying state, determining whether playback conditions are met; and when the playback conditions are met, controlling an audio playback device to play the audio information. The control method for the clothes drying rack described in this application enables the clothes drying rack to play user-preferred audio information when used by a user for drying clothes, enriching the user experience and enhancing the user's enjoyment.

Description

Technical Field

[0001] This application relates to the field of smart home technology, and in particular to a control method, system and clothes drying rack. Background Technology

[0002] As economic levels rise, the concept of smart home living is gaining popularity. Smart homes, combined with technological applications, are changing traditional lifestyles and providing users with a better living experience. Today, users are no longer satisfied with the basic functions of traditional home appliances; they have much richer demands for the intelligence and functionality of home products.

[0003] Currently, most smart clothes drying racks on the market focus on basic practical functions, such as disinfection, lighting, drying, and air drying. These existing smart clothes drying rack products have limited functions and can only meet users' basic drying needs in daily life. Summary of the Invention

[0004] Based on this, the purpose of this application is to propose a control method for a clothes drying rack, so that the clothes drying rack can play audio content that the user likes while drying clothes, thereby enriching the user's enjoyment and improving the user experience.

[0005] This application discloses a control method for a clothes drying rack, including the following steps:

[0006] Obtain audio information for playback;

[0007] Monitor the working status of the clothes drying rack;

[0008] When the clothes drying rack is detected to be in the user's drying state, it is determined whether the playback conditions are met;

[0009] When the playback conditions are met, the audio playback device is controlled to play the audio information.

[0010] In one embodiment, whether the clothes drying rack is in a user-operated drying state is monitored by the following method:

[0011] When the clothes drying rack is detected to move to the preset drying position, it is determined that the clothes drying rack is in the user's drying state;

[0012] The playback conditions are: the time during which the clothes dryer maintains the user's drying state exceeds a first preset time threshold; or, the time during which the clothes dryer maintains the user's drying state exceeds the first preset time threshold and a human signal is detected within the detection area.

[0013] In one embodiment, the following steps are also included:

[0014] Monitor the user's drying status of the clothes drying rack;

[0015] When the clothes drying rack is detected to have exited the user's drying state, the audio playback device is controlled to stop playing audio information in real time or with a delay; or, when the time the clothes drying rack maintains the user's drying state exceeds a second preset time threshold, the audio playback device is controlled to stop playing audio information.

[0016] In one embodiment, the step of monitoring the working status of the clothes drying rack includes:

[0017] Establish a communication connection with the user terminal, and in response to the start command sent by the user terminal, enable the function of monitoring the working status of the clothes drying rack; or, in response to the stop command sent by the user terminal, disable the function of monitoring the working status of the clothes drying rack.

[0018] In one embodiment, the audio information for playback comes from big data platform push and / or user terminal selection;

[0019] The specific process of determining the audio information to be pushed through a big data platform includes at least one of the following:

[0020] The big data platform determines the personal interests of clothes drying rack users based on their historical selections, and uses this information to obtain relevant audio information for push content.

[0021] The big data platform obtains relevant audio information based on the choices made by clothes drying rack users and uses it as push content;

[0022] We use big data platforms to obtain information on trending social issues and use it as content for push notifications.

[0023] When the audio information to be played comes from the user terminal's selection, the user terminal selects locally stored audio information or obtains audio information by accessing a third-party platform.

[0024] This application also discloses a control system for a clothes drying rack, including a controller;

[0025] The controller is connected to the audio playback device and is used to control the audio playback device to play audio information;

[0026] The controller is used to execute the control method as described in any of the above embodiments.

[0027] In one embodiment, the controller is connected to a user terminal and is used to obtain audio information for playback from the user terminal;

[0028] The controller is connected to the big data platform through the user terminal and is used to obtain audio information for playback from the big data platform through the user terminal.

[0029] This application also discloses a clothes drying rack, including the control system described in any of the above embodiments.

[0030] This application also discloses a computer-readable storage medium, which includes a stored computer program, wherein the computer program, when running, controls the device where the computer-readable storage medium is located to perform the method described in any of the above embodiments.

[0031] This application also discloses a computer device, including a memory and a processor, and a computer program stored in the memory; when the processor executes the computer program, it implements the steps of the method described in any of the above embodiments.

[0032] The control method for a clothes drying rack described in this embodiment monitors the working status of the clothes drying rack. When the rack is detected to be in a user-operated drying state, it determines whether playback conditions are met. If the playback conditions are met, it controls the audio playback device to play audio information. This control method enables the clothes drying rack to play user-preferred audio information when used for drying clothes, enriching the user experience and enhancing their enjoyment.

[0033] To better understand and implement this application, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0034] Figure 1 This is a flowchart illustrating a control method for a clothes drying rack according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the control system of a clothes drying rack according to an embodiment of this application;

[0036] Figure 3 This is a schematic diagram of the structure of a computer device according to an embodiment of this application. Detailed Implementation

[0037] Please refer to Figure 1 This application discloses a control method for a clothes drying rack, including the following steps:

[0038] S101: Obtain audio information for playback;

[0039] S102: Monitor the working status of the clothes drying rack;

[0040] S103: When it is detected that the clothes drying rack is in the user's drying state, determine whether the playback conditions are met;

[0041] S104: When the playback conditions are met, control the audio playback device to play the audio information.

[0042] The control method for a clothes drying rack described in this embodiment monitors the working status of the clothes drying rack. When the rack is detected to be in a user-operated drying state, it determines whether playback conditions are met. If the playback conditions are met, it controls the audio playback device to play audio information. This control method enables the clothes drying rack to play user-preferred audio information when used for drying clothes, enriching the user experience and enhancing their enjoyment.

[0043] The control method for the clothes drying rack described in this embodiment is executed by the clothes drying rack itself. Generally, during operation, the clothes drying rack raises and lowers the clothesline and operates the drying function according to the user's control commands. The drying function may include functions such as disinfection, lighting, tumble drying, or air drying.

[0044] For step S101, the clothes drying rack obtains audio information for playback. Specifically, the clothes drying rack may obtain audio information for playback only when it detects that the user is in the drying state or when the playback conditions are met, or the clothes drying rack may obtain the audio information for playback in advance and save it locally.

[0045] The audio information is used for playback by the clothes drying rack and can be audio information that the user is interested in, such as music, news, weather forecasts, etc. In this embodiment, it mainly refers to audio information related to daily life, including weather forecasts, music, entertainment information, etc., which can be specifically set by the user according to their needs.

[0046] Please refer to Figure 2 In this embodiment, the clothes drying rack can connect to a user terminal and obtain the audio information sent by the user terminal for playback. The user terminal can be a smartphone, a tablet computer, or a dedicated smart control device.

[0047] Specifically, the clothes drying rack can establish a communication connection with a user terminal's APP, for example, through Bluetooth binding. This allows the user to control the clothes drying rack and configure playback settings through the APP, including setting preferred audio content types such as music, news, and weather forecasts, as well as specific preferred genres such as favorite music types and styles. The APP then obtains local audio information or server-side audio information based on the user's settings and transmits it to the clothes drying rack.

[0048] In one embodiment, the user terminal sends an audio content type setting instruction to the server based on several audio content types selected by the user, so that the server obtains relevant audio information based on the several audio content types selected by the user and pushes the audio information of the day to the user terminal's APP.

[0049] The user terminal's APP receives and saves the audio information of the day and clears the audio information of the previous day;

[0050] The user terminal's APP transmits the audio information to the clothes drying rack.

[0051] In this embodiment, the server retrieves relevant audio information for the day from various related platforms based on several audio content types selected by the user, and pushes it to the user terminal's APP for storage. The server can update and push the data for the day in real time every day, ensuring the timeliness of the audio information obtained by the clothes drying rack for playback, so that users can learn about the day's weather forecast or news reports from the audio played by the clothes drying rack. At the same time, considering the limited memory of the user terminal, the user terminal's APP clears the audio information saved before the day when receiving and saving the audio information for the day.

[0052] In other embodiments, the clothes drying rack can also directly connect to a server and receive the audio information for playback sent by the server. The server can be a third-party platform, such as the server of a mainstream music platform, with the clothes drying rack communicating directly with the third-party platform and obtaining its audio information through a corresponding data interface. Alternatively, the server can be the server of a broadcast channel or a broadcast center, with the clothes drying rack receiving broadcast audio information via a corresponding broadcast frequency band. The server can also be a self-built big data platform dedicated to obtaining audio information from third-party platforms and pushing it to the clothes drying rack.

[0053] In one embodiment, the audio information for playback comes from big data platform push and / or user terminal selection;

[0054] The specific process of determining the audio information to be pushed through a big data platform includes at least one of the following:

[0055] The big data platform determines the personal interests of clothes drying rack users based on their historical selections, and uses this information to obtain relevant audio information for push content.

[0056] The big data platform obtains relevant audio information based on the choices made by clothes drying rack users and uses it as push content;

[0057] We use big data platforms to obtain information on trending social issues and use it as content for push notifications.

[0058] When the audio information to be played comes from the user terminal's selection, the user terminal selects locally stored audio information or obtains audio information by accessing a third-party platform.

[0059] In this embodiment, the clothes drying rack can be connected to a user terminal. The user can select and send their preferred audio information stored locally on the user terminal to the clothes drying rack, or access a third-party platform through the user terminal to obtain their preferred audio information and send it to the clothes drying rack.

[0060] In this embodiment, the clothes drying rack can also communicate with a big data platform and obtain the content pushed by the big data platform to obtain the audio information for playback. In one embodiment, the pushed content may include music, weather forecasts, sports event information, or game event information.

[0061] Specifically, the process of determining which audio information to push by a big data platform can be based on the user's historical playback data, analyzing the user's personal interests through big data, and obtaining relevant audio information as push content accordingly. Alternatively, it can respond to the user's selection actions to obtain relevant audio information as push content; for example, users can set specific preferences, allowing the big data platform to obtain relevant audio information from the network as push content. Furthermore, the big data platform can also obtain social hot topics as push content. These social hot topics refer to information with significant social popularity, including but not limited to popular music and trending news. Specifically, when obtaining social hot topics from third-party platforms, the big data platform can use popular tags or trending lists on those platforms. For example, popular music on music platforms usually has popular tags, or the platform has trending lists that are updated in real time. Therefore, the audio information of corresponding popular music can be obtained based on popular tags or trending lists as push content. Similarly, news or social media platforms usually have popular recommendations that can be identified based on popular tags. Additionally, the platform can determine whether relevant information is social hot topics based on its popularity or page views, according to preset indicators, and then obtain and push it accordingly.

[0062] In one embodiment, the step of determining a clothes dryer user's personal interests based on their historical selections by a big data platform, and then obtaining relevant information for push notifications, includes:

[0063] The big data platform obtains the user's historical selection data recorded by the user terminal and analyzes the user's historical selection data to obtain the user's personal interest characteristics. Based on the user's personal interest characteristics, relevant audio information is obtained as push content.

[0064] Alternatively, the big data platform can call the data interface of a third-party platform to obtain the audio information recommended on the third-party platform as the push content, and record the user's playback choices; based on the user's historical playback choices, the platform can use recommendation algorithms in machine learning to match the user's favorite audio information and obtain the relevant audio information as the push content.

[0065] The big data platform in this embodiment can analyze the playback data recorded on the user's terminal to obtain the user's personal interest characteristics and push audio information matching the user's interest characteristics to the clothes drying rack for playback; alternatively, it can directly obtain audio information recommended by a third-party platform as the push content in the early stage and record the user's playback choices. When the recorded data is sufficient, it can use a machine learning recommendation algorithm to match the user's favorite audio information and push it based on the recorded user's playback choices.

[0066] For step S102, monitoring the working status of the clothes drying rack can specifically involve monitoring the operation of various functional components and / or modules of the clothes drying rack, such as monitoring the raising and lowering of the clothes drying rod or the operation of the drying function. When monitoring the raising and lowering of the clothes drying rod, this can be done by setting up sensors to monitor the raising and lowering of the rod and its position, or by monitoring the control program of the clothes drying rod to determine its raising and lowering and its position.

[0067] In this embodiment, the working state of the clothes drying rack includes the user drying state, which refers to the state during the process of the clothes drying rack being used by the user to dry clothes. Generally, the state of the clothes drying rack is when the clothesline is in the drying position.

[0068] In one embodiment, the clothes drying rack is controlled via a user terminal, and the step of monitoring the operating status of the clothes drying rack includes:

[0069] Establish a communication connection with the user terminal, and in response to the start command sent by the user terminal, enable the function of monitoring the working status of the clothes drying rack; or, in response to the stop command sent by the user terminal, disable the function of monitoring the working status of the clothes drying rack.

[0070] In this embodiment, the clothes drying rack is controlled via a user terminal. The user can enable the playback function of the clothes drying rack on the user terminal so that the clothes drying rack monitors its working status and plays audio information when the playback conditions are met. Alternatively, the user can disable the playback function of the clothes drying rack so that the clothes drying rack stops monitoring its working status and stops playing audio information.

[0071] In one embodiment, whether the clothes drying rack is in a user-operated drying state is monitored by the following method:

[0072] When the clothes drying rack is detected to move to the preset drying position, it is determined that the clothes drying rack is in the user's drying state.

[0073] The drying position refers to the preset position of the clothes drying rack's drying rod when clothes are being dried, such as a preset height, which can be determined according to the working characteristics of different clothes drying rack products. Generally speaking, the clothes drying rack is considered to be in the user's drying state when the drying rod moves to the preset drying position.

[0074] In one embodiment, the clothes drying rack is installed on the ceiling of the home environment. When using it to dry clothes, the user needs to control the clothes drying rod to lower to a first preset height, and after drying, control the clothes drying rod to rise to a second preset height. The drying position is the first preset height. Therefore, by monitoring whether the clothes drying rod is controlled to lower to the first preset height, it can be determined whether the clothes drying rack is in the user's drying state.

[0075] Of course, in other embodiments, other conditions can be set as criteria for determining the user's drying status based on the working characteristics of different clothes drying rack products and actual application situations. Depending on the situation, other methods can also be used, such as monitoring the execution of the program in the clothes drying rack, to determine whether the clothes drying rack is in the user's drying state. For example, in one embodiment, when it is detected that the clothes drying rack is running a preset drying program, it is determined that the clothes drying rack is in the user's drying state; when it is detected that the clothes drying rack stops running the drying program, it is determined that the clothes drying rack is not in the user's drying state.

[0076] For step S103, when it is detected that the clothes drying rack is in the user's drying state, it is determined whether the playback conditions are met.

[0077] The playback conditions are used to determine whether the clothes drying rack can play the audio information, and can be set according to the user's situation. Generally speaking, the clothes drying rack needs to play audio information when the user is drying clothes.

[0078] In one embodiment, the playback condition is: the time during which the clothes drying machine maintains the user's drying state exceeds a first preset time threshold.

[0079] The first preset time threshold can be set by the user, for example, 30 seconds.

[0080] In this embodiment, when the clothes drying machine is in the user's drying state and maintains this state for more than a first preset time threshold, it is determined that the clothes drying machine meets the playback conditions.

[0081] In another embodiment, the playback condition is: the clothes drying machine maintains the user's drying state for a period of time exceeding a first preset time threshold and a human signal is detected within the detection area.

[0082] Specifically, the clothes dryer can use a sensing device to detect the detection area and determine whether a human signal is detected, such as using an infrared sensor to detect and determine whether a human signal is detected based on the infrared signal. In this embodiment, the clothes dryer is only considered to meet the playback conditions and plays the audio information when it maintains the user's drying state and a human signal is detected in the detection area. If no human signal is detected in the detection area, the playback conditions are not met even if the clothes dryer is in the user's drying state, and the audio information is not played. This embodiment achieves playback only when the user is present, and no playback when the user is not present.

[0083] For step S104, when the playback conditions are met, the audio playback device is controlled to play the audio information.

[0084] The audio playback device can be a speaker connected to the control unit of the clothes dryer, which receives and plays audio information transmitted by the control unit; the audio playback device can also be a device controlled by the control unit of the clothes dryer and directly obtains audio information from the server or user terminal for playback, such as a Bluetooth speaker. In one example, the audio playback device can be a Bluetooth speaker, which connects to the user terminal via Bluetooth and responds to the control commands sent by the control unit of the clothes dryer, receiving and playing the broadcast content transmitted by the user terminal.

[0085] In one embodiment, the step of controlling the audio playback device to play the audio information includes:

[0086] Based on the several audio information selected by the user in sequence, the corresponding audio information is played sequentially through the audio playback device in the order in which the audio information was selected;

[0087] Alternatively, based on the unique audio information selected by the user, the corresponding audio information can be played through the audio playback device, and the audio playback device can be controlled to stop playing when the audio information has finished playing.

[0088] In this embodiment, when a user selects multiple audio information, such as multiple songs and multiple news articles, the corresponding audio information is played according to the selection order; when a user selects only one audio information, only that audio information is played and playback stops when it is finished.

[0089] In one embodiment, after the clothes drying rack is in the user's drying state, the user's drying state of the clothes drying rack continues to be monitored;

[0090] When the clothes drying rack is detected to have exited the user's drying state, the audio playback device is controlled to stop playing audio information in real time or with a delay; or, when the time the clothes drying rack maintains the user's drying state exceeds a second preset time threshold, the audio playback device is controlled to stop playing audio information.

[0091] The second preset time threshold can be set by the user, for example, to 25 minutes.

[0092] In this embodiment, when it is detected that the clothes dryer has exited the user's drying state, the audio playback device is controlled to stop playing audio information immediately or after a delay of, for example, 10 seconds. Alternatively, when it is detected that the clothes dryer has maintained the user's drying state for a period exceeding a second preset time threshold, for example, 25 minutes, the audio playback device is controlled to stop playing audio information. That is to say, even if the clothes dryer has not exited the user's drying state, as long as it has maintained the user's drying state for a period exceeding the second preset time threshold, the audio playback device is controlled to stop playing audio information, thereby preventing the clothes dryer from continuously playing audio information if the user forgets to exit the user's drying state after finishing drying clothes.

[0093] This application also discloses a control system for a clothes drying rack, including a controller;

[0094] The controller is connected to the audio playback device and is used to control the audio playback device to play audio information;

[0095] The controller is used to execute the control method described in any of the above embodiments.

[0096] In one embodiment, the controller is connected to a user terminal and is used to obtain audio information for playback from the user terminal;

[0097] The controller is connected to the big data platform through the user terminal and is used to obtain audio information for playback from the big data platform through the user terminal.

[0098] In this embodiment, the controller of the clothes drying rack control system is connected to the user terminal, which can directly obtain the local audio information of the user terminal, or obtain the audio information of the big data platform through the user terminal.

[0099] This application also discloses a clothes drying rack, including the control system described in any of the above embodiments.

[0100] This application also discloses a computer-readable storage medium, which includes a stored computer program. When the computer program is executed, it controls the device containing the computer-readable storage medium to perform the methods described in any of the above embodiments. That is, those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The computer program may include computer program code, which may be in the form of source code, object code, executable files, or certain intermediate forms. The aforementioned storage medium includes: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content contained in computer-readable media may be appropriately added to or subtracted from the requirements of legislation and patent practice in a jurisdiction. For example, in some jurisdictions, computer-readable media may not include electrical carrier signals and telecommunication signals, in accordance with legislation and patent practice.

[0101] Please refer to Figure 3 This application also discloses a computer device 401, including a memory 402, a processor 403, and an audio playback device 404. The memory 402 includes a computer program 405, which, when executed by the processor 403, implements the method described in any of the above embodiments.

[0102] The processor 403 may include one or more processing cores. The processor 403 connects to various parts within the computer device 401 using various interfaces and lines. It executes various functions of the computer device 401 and processes data by running or executing instructions, programs, code sets, or instruction sets stored in the memory 402, and by calling data from the memory 402. Optionally, the processor 403 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 403 may integrate one or a combination of several of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the content required to be displayed on the touch screen; and the modem handles wireless communication. It is understood that the modem may also not be integrated into the processor 403 and may be implemented as a separate chip.

[0103] The memory 402 may include random access memory (RAM) or read-only memory. Optionally, the memory 402 may include a non-transitory computer-readable storage medium. The memory 402 can be used to store instructions, programs, code, code sets, or instruction sets. The memory 402 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as touch instructions), instructions for implementing the various method embodiments described above, etc.; the data storage area may store data involved in the various method embodiments described above, etc. Optionally, the memory 402 may also be at least one storage device located remotely from the aforementioned processor 403.

[0104] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and this application also intends to include these modifications and variations.

Claims

1. A control method for a clothes drying rack, characterized in that, Includes the following steps: Obtain audio information for playback; Monitor the working status of the clothes drying rack; When the clothes drying rack is detected to be in the user's drying state, it is determined whether the playback conditions are met; When the playback conditions are met, the audio playback device is controlled to play the audio information; Monitor the user's drying status of the clothes drying rack; When the clothes drying rack is detected to have exited the user's drying state, the audio playback device is controlled to stop playing audio information in real time or with a delay; or, when the time the clothes drying rack has maintained the user's drying state exceeds a second preset time threshold, the audio playback device is controlled to stop playing audio information. The following methods are used to monitor whether the clothes drying rack is in the user's drying state: When the clothes drying rack is detected to move to the preset drying position, it is determined that the clothes drying rack is in the user's drying state; The playback conditions are: the time during which the clothes dryer maintains the user's drying state exceeds a first preset time threshold; or, the time during which the clothes dryer maintains the user's drying state exceeds the first preset time threshold and a human signal is detected within the detection area.

2. The control method for a clothes drying rack according to claim 1, characterized in that, The steps for monitoring the working status of the clothes drying rack include: Establish a communication connection with the user terminal, and in response to the start command sent by the user terminal, enable the function of monitoring the working status of the clothes drying rack; or, in response to the stop command sent by the user terminal, disable the function of monitoring the working status of the clothes drying rack.

3. The control method for a clothes drying rack according to any one of claims 1-2, characterized in that, The audio information provided for playback comes from big data platform push and / or user terminal selection; The specific process of determining the audio information to be pushed through a big data platform includes at least one of the following: The big data platform determines the personal interests of clothes drying rack users based on their historical selections, and uses this information to obtain relevant audio information for push content. The big data platform obtains relevant audio information based on the choices made by clothes drying rack users and uses it as push content; We use big data platforms to obtain information on trending social issues and use it as content for push notifications. When the audio information to be played comes from the user terminal's selection, the user terminal selects locally stored audio information or obtains audio information by accessing a third-party platform.

4. A control system for a clothes drying rack, characterized in that, Including the controller; The controller is connected to the audio playback device and is used to control the audio playback device to play audio information; The controller is used to execute the control method according to any one of claims 1 to 3.

5. The control system of the clothes drying rack according to claim 4, characterized in that, The controller is connected to the user terminal and is used to obtain audio information for playback from the user terminal; The controller is connected to the big data platform through the user terminal and is used to obtain audio information for playback from the big data platform through the user terminal.

6. A clothes drying rack, characterized in that, Includes the control system described in claim 4 or 5.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored computer program, wherein, when the computer program is executed, it controls the device on which the computer-readable storage medium is located to perform the method as described in any one of claims 1 to 3.

8. A computer device, characterized in that, It includes a memory and a processor, and a computer program stored in the memory; when the processor executes the computer program, it implements the steps of the method as described in any one of claims 1 to 3.

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