Clothes processing equipment control method and clothes processing equipment

Abstract

The invention belongs to the technical field of clothes treatment, and discloses a clothes treatment equipment control method and clothes treatment equipment, and the clothes treatment equipment control method comprises the following steps: when clothes parameters in the clothes treatment equipment meet equipment operation requirements, running a clothes treatment program selected by a current user, an observation window screen of the clothes processing equipment is switched from a visible state to an invisible state, so that the privacy of a user is effectively protected; after the clothes processing program is operated, the observation window screen can be switched to the visible state when receiving the operation instruction of the user, the user can conveniently check the processing condition of clothes in the equipment midway, after the user checks and confirms the processing condition, the operation instruction can be sent again to enable the observation window screen to be switched to the invisible state, and the privacy of the user continues to be protected. According to the clothes processing equipment control method, a user can conveniently check the state of the clothes in the clothes processing equipment from the outside, the state can be switched to an invisible state according to user requirements, the privacy of the user is protected, and the use experience of the user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing processing, and in particular to a clothing processing device control method and clothing processing device. Background Art

[0002] Existing clothing processing equipment such as washing machines and dryers all include a door structure that can be rotated to open and close. The door structure is provided with an observation window screen. The observation window screen is usually made of transparent plastic material, which is convenient for users to view the washing or care status of the clothes in the drum through the observation window screen. However, in the following situations: for example, due to living space limitations, the washing machine or dryer is placed in the living room or balcony, etc. When there are guests, the user hopes that the working conditions inside the washing machine or dryer cannot be observed from the outside to protect privacy; or, in a public laundry room, it is also necessary to protect the user's privacy when washing or drying clothes to avoid peeping from other users. If the observation window screen of the clothing processing equipment is directly set to a non-transparent material, the user cannot view the status of the clothes in the drum during use, and the user experience is poor.

[0003] Therefore, there is an urgent need for a control method for a clothing processing device and a clothing processing device to solve the problem that the privacy of users is not guaranteed when washing and protecting clothes. Summary of the invention

[0004] The object of the present invention is to provide a method for controlling a clothing processing device and a clothing processing device, which can not only enable a user to view the status of clothing inside the clothing processing device from the outside, but also protect the user's privacy and improve the user's experience.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In a first aspect, a method for controlling a laundry processing device is provided, comprising the following steps:

[0007] When the clothing parameters inside the clothing processing device meet the equipment operation requirements, the clothing processing program currently selected by the user is run, and the observation window screen of the clothing processing device is switched from a visible state to an invisible state;

[0008] After the clothes processing program is run, the observation window screen can switch between a visible state and an invisible state upon receiving an operation instruction from a user.

[0009] As a preferred solution of the control method of the clothing processing device provided by the present invention, the control method of the clothing processing device further includes step S1: determining whether the clothing parameters inside the clothing processing device meet the equipment operation requirements;

[0010] The clothing parameters include gravity parameters, and the step S1 includes:

[0011] S11, detecting the gravity parameters of the clothing;

[0012] S12, determining whether the gravity parameter is within a preset gravity range, if so, running the clothing processing program currently selected by the user, if not, not running it and issuing a warning signal.

[0013] As a preferred solution of the clothing processing equipment control method provided by the present invention, after receiving the user's operation instruction, it is determined whether the user and the user who selected the clothing processing program are the same user. If so, the user's operation instruction for switching the visible state and the invisible state of the observation window screen is executed; if not, the user's operation instruction is not executed.

[0014] As a preferred solution of the method for controlling a clothes processing device provided by the present invention, it is determined by fingerprint information whether the user who issues the operation instruction and the user who selects the clothes processing program are the same user.

[0015] As a preferred solution of the control method of the laundry processing device provided by the present invention, the control method of the laundry processing device further includes the following steps:

[0016] Pre-storing the fingerprint information of the user who selected the clothing treatment program and setting it as the current fingerprint information;

[0017] The fingerprint information of the user who issues the operation instruction is collected and compared with the current fingerprint information. If the match is successful, the operation instruction of the user to switch the visible state and the invisible state of the observation window screen is executed. If the match fails, the operation instruction of the user is not executed, and a prompt signal of the matching failure is issued.

[0018] As a preferred embodiment of the method for controlling a clothing processing device provided by the present invention, after the clothing processing program ends, the user's fingerprint information is received, and the received fingerprint information is matched with the current fingerprint information. If the match is successful, the door body of the clothing processing device is controlled to be in a state allowing it to be opened, and the observation window screen is controlled to be switched to a visible state. If the match fails, the door body is controlled to be in a state prohibiting it from being opened, and the observation window screen is controlled to maintain an invisible state.

[0019] As a preferred solution of the method for controlling a clothes processing device provided by the present invention, after the clothes processing program is run for a preset time T, the observation window screen is controlled to switch from a visible state to an invisible state.

[0020] In a second aspect, a clothes processing device is provided, comprising:

[0021] An observation window screen, wherein the observation window screen has a visible state and an invisible state;

[0022] A control module, the control module is used to control the operation of the clothing processing program when the clothing parameters inside the clothing processing device meet the equipment operation requirements, and is used to control the switching state of the observation window screen;

[0023] A human-computer interaction module is used to receive a user's operation instruction on switching the state of the observation window screen, and the human-computer interaction module is communicatively connected with the control module.

[0024] As a preferred embodiment of the clothing processing device provided by the present invention, a gravity detection device is provided in the clothing processing device, the clothing parameters include gravity parameters, the gravity detection device is used to monitor the gravity parameters of the clothing, and when the detection value of the gravity detection device is within a preset gravity range, the control module controls the operation of the clothing processing program.

[0025] As a preferred solution of the clothes processing device provided by the present invention, the observation window screen comprises an outer window screen and an inner window screen arranged at intervals;

[0026] An electric control layer is provided between the outer window screen and the inner window screen, and the control module controls the electric control layer to be powered on or off so as to switch the electric control layer between a transparent state and a non-transparent state;

[0027] Alternatively, an annular mounting cover is provided between the outer window screen and the inner window screen, and a plurality of rotatable shielding blades are provided on the annular mounting cover along the circumferential direction, and the control module can control the shielding blades to rotate within the plane where the annular mounting cover is located, so as to selectively shield the annular opening of the annular mounting cover;

[0028] Alternatively, a rolling curtain is provided between the outer window screen and the inner window screen, and the control module can control the rolling curtain to rise and fold to a stowed state and to descend and extend to an unfolded state.

[0029] Beneficial effects of the present invention:

[0030] The present invention provides a control method for a clothing processing device and a clothing processing device. After the clothing processing device runs a clothing processing program selected by a user, the observation window screen is switched from a visible state to an invisible state. At this time, the clothing being processed inside the clothing processing device cannot be observed from the outside of the clothing processing device, effectively protecting the privacy of the user. During the operation of the clothing processing program, the clothing processing device can also receive the user's operation instructions, and can switch the observation window screen from an invisible state to a visible state after receiving the user's operation instructions, so that the user can view the processing status of the clothing inside the device from the outside, such as whether the clothing is mixed with color, whether there are items that cannot be washed or dried inside the device, and after the user checks and confirms, the operation instruction can be issued again to switch the observation window screen to an invisible state again, and continue to protect the privacy of the user. The control method for clothing processing equipment is convenient for the user to view the status of the clothing inside the clothing processing device from the outside, and can switch to an invisible state according to the user's needs, protect the user's privacy, and improve the user's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is an external view of a clothes handling apparatus;

[0032] Figure 2 It is a flow chart of a method for controlling a clothing processing device provided in a specific embodiment of the present invention.

[0033] In the figure:

[0034] 10. Observation window screen; 20. Machine body; 30. Door body. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] like Figure 1 , which is a schematic diagram of the structure of a clothes processing device, the clothes processing device comprises a body 20 and a door body 30 arranged on the body 20, the door body 30 can be rotated to open and close to cover or reveal the clothes loading port on the body 20, and an observation window screen 10 is arranged on the door body 30, and the user can check the clothes processing status through the observation window screen 10. Exemplarily, the clothes processing device is a washing machine, a dryer, a washer-dryer, a clothes care machine, etc.

[0040] like Figure 2 As shown, this embodiment provides a method for controlling a clothes processing device, comprising the following steps:

[0041] When the clothing parameters inside the clothing processing device meet the equipment operation requirements, the clothing processing program currently selected by the user is run, and the observation window screen 10 of the clothing processing device is switched from a visible state to an invisible state;

[0042] After the laundry treatment program is run, the observation window screen 10 can switch between a visible state and an invisible state upon receiving an operation instruction from the user.

[0043] After the clothing processing device runs the clothing processing program selected by the user, the observation window screen 10 is switched from a visible state to an invisible state. At this time, the clothing being processed inside the clothing processing device cannot be observed from the outside of the clothing processing device, which effectively protects the privacy of the user. During the operation of the clothing processing program, the clothing processing device can also receive the user's operation instructions, and can switch the observation window screen 10 from an invisible state to a visible state after receiving the user's operation instructions, so that the user can view the processing status of the clothing inside the device from the outside, such as whether the clothing is color-contaminated, whether there are items that cannot be washed or dried inside the device. After the user checks and confirms, the operation instruction can be issued again to switch the observation window screen 10 to an invisible state again, and the user's privacy continues to be protected. The control method of the clothing processing device is convenient for the user to view the status of the clothing inside the clothing processing device from the outside, and can switch to an invisible state according to the user's needs, protect the user's privacy, and improve the user's experience.

[0044] In addition, the clothing processing program currently selected by the user will only be run when the clothing parameters inside the clothing processing device meet the equipment operation requirements. When the equipment operation requirements are not met, the clothing processing program will not be run, thereby ensuring the safety of the equipment operation.

[0045] Accordingly, the control method of the clothing processing device further includes step S1: determining whether the clothing parameters inside the clothing processing device meet the equipment operation requirements. Specifically in this embodiment, the clothing parameters include gravity parameters, and by determining whether the clothing gravity parameters meet the equipment operation requirements, the equipment operation safety is ensured and the equipment overload is avoided.

[0046] Step S1 includes:

[0047] S11, detecting the gravity parameters of the clothes.

[0048] S12, determining whether the gravity parameter is within a preset gravity range, if so, running the clothing processing program currently selected by the user, if not, not running and issuing a warning signal.

[0049] In step S11, the gravity parameters of the clothes can be detected by the gravity detection part set inside the device. For drum washing machines or dryers, the gravity detection part can be set on the drum, which is exemplified by a gravity sensor. The gravity sensor can accurately detect the gravity of the clothes placed in the drum and send the gravity information to the computer board. In step S12, the computer board can judge the received gravity information and compare it with the preset gravity range pre-written in the computer board. If the gravity information is within the preset gravity range, the computer board controls the device to start the clothing processing program selected by the user (the door body 30 is in a closed state at this time). If the gravity information exceeds the preset gravity range, the computer board controls the alarm module to send a warning signal. The warning signal can be displayed on the display screen installed on the front side of the device to prompt the user that the clothes put in are overweight and please take out some clothes. For example, the preset gravity range is 0-5kg or 1-3kg.

[0050] Alternatively, see Figure 2 After the user selects a clothing processing program, the gravity parameter is judged to see if it meets the requirements. For some washing machines, different washing programs correspond to different preset gravity ranges. After selecting a program, the gravity of the clothes is judged to see if it meets the preset gravity range corresponding to the selected program. For dryers, different drying programs may correspond to the same preset gravity range. Therefore, it is also possible to immediately detect and judge whether the gravity parameter exceeds the range after putting the clothes in, and then select the program and run it.

[0051] By detecting the gravity of clothes, users can be reminded not to wash or dry too many clothes at one time, thereby ensuring the safety of equipment operation, avoiding equipment overload and extending the service life of the equipment.

[0052] Furthermore, after the clothes treatment program is run for a preset time T, the computer board controls the observation window screen 10 to switch from a visible state to an invisible state. For example, the preset time T is 20 seconds. After the device runs for 20 seconds, the observation window screen 10 automatically switches to an invisible state. During this preset time T, the user can check the internal operation status of the device and leave after confirming that the internal operation is good.

[0053] Optionally, in this embodiment, after receiving the user's operation instruction, it is determined whether the user and the user who selected the clothing processing program are the same user. If so, the user's operation instruction for switching the observation window screen 10 between the visible state and the invisible state is executed. If not, the user's operation instruction is not executed. For public washing machines and dryers in places such as laundry rooms, user privacy protection is even more important. In order to prevent other users from maliciously peeping at the clothes inside the device, after receiving the operation instruction, the device first determines whether the user is the owner of the clothes inside the device, that is, whether the user is the same user as the user who puts the clothes in and selects the clothing processing program. If they are not the same user, the device refuses to execute the user's operation instruction. At this time, the device cannot switch to a visible state to ensure that the clothes inside are not viewed by other users.

[0054] For example, the clothing processing device determines whether the user who issues the operation instruction and the user who selects the clothing processing program are the same user through fingerprint information, which is easy to implement and the determination result is highly accurate.

[0055] See also Figure 2 Specifically, the step of determining whether the user is the same user through fingerprint information includes:

[0056] W1. Pre-store the fingerprint information of the user who selects the clothing processing program and set it as the current fingerprint information.

[0057] W2. Collect the fingerprint information of the user who issues the operation instruction and compare it with the current fingerprint information. If the match is successful, the operation instruction of the user to switch the visible state and the invisible state of the observation window screen 10 is executed. If the match fails, the operation instruction of the user is not executed, and a prompt signal of matching failure is issued.

[0058] Step W1 is performed before running the clothing processing program. The device sends a command for pre-stored fingerprints through the display screen or a mobile terminal connected to the device for communication. The device is provided with a fingerprint collection module and a storage module. The fingerprint collection module collects the fingerprint information of the current user and stores the fingerprint information of the user in the storage module. The fingerprint information of the user is set as the current fingerprint information. After running the clothing processing program, the current fingerprint information is used as the comparison standard.

[0059] For example, switching the visible / invisible state of the observation window screen 10 can be achieved through a control button, and the control button can be set independently from the fingerprint collection module. The user first identifies himself through the fingerprint collection module, and after the identification is successful (that is, the fingerprint information matches the current fingerprint information), the state of the observation window screen 10 can be switched through the control button. Of course, the control button can also be integrated with the fingerprint collection module, and immediately switch to a visible state after the user's fingerprint is successfully matched.

[0060] During washing or drying, if other users try to switch the state of the observation window screen 10, they will be unable to operate due to the failure of fingerprint information matching, and the device will display prompts such as "fingerprint matching failed" or "identity recognition failed" on the display screen.

[0061] After the clothing processing program finishes running, the user's fingerprint information is received through the fingerprint acquisition module, and the received fingerprint information is matched with the current fingerprint information. If the match is successful, it means that the user is the owner of the clothes in the device, and the computer board controls the door body 30 of the clothing processing device to be in a state that allows opening, and controls the observation window screen 10 to switch to a visible state; if the match fails, it means that the user is another user, and the computer board controls the door body 30 to be in a state that prohibits opening, and controls the observation window screen 10 to maintain an invisible state, to prevent other users from maliciously opening the door body 30 and maliciously peeping at the clothes in the device, and still protects the user's privacy after the program is completed.

[0062] Since the clothing processing equipment cannot be turned on by anyone other than the user, after running the clothing processing program, the computer board can send a reminder message to the user's mobile terminal (such as a mobile phone) that washing or drying is completed, reminding the user to collect the clothes in time to avoid occupying the equipment for a long time and affecting others' use.

[0063] The present embodiment also provides a clothing processing device, including an observation window screen 10, a control module and a human-computer interaction module. The observation window screen 10 is arranged on the door body 30 of the device, and has a visible state and an invisible state. The control module is used to control the operation of the clothing processing program when the clothing parameters inside the clothing processing device meet the equipment operation requirements, and is used to control the switching state of the observation window screen 10. The human-computer interaction module is used to receive the user's operation instruction on switching the state of the observation window screen 10, and the human-computer interaction module is connected to the control module for communication.

[0064] The control module includes a computer board of the clothing processing device. Taking a clothes dryer as an example, a gravity detection element is provided in the drum of the clothes dryer. The above clothing parameters include gravity parameters. The gravity detection element is used to monitor the gravity parameters of the clothing. When the detection value of the gravity detection element is within a preset gravity range, the control module (computer board) controls the operation of the clothing processing program.

[0065] The gravity detection element includes a gravity sensor, which detects the gravity of the clothes placed in the drum and transmits the detection value to the computer board. After the computer board determines that the gravity parameter is within the preset range, it runs the corresponding program. Furthermore, after running the program for a preset time T, the computer board controls the observation window screen 10 to switch from a visible state to an invisible state to protect the user's privacy. During the program running process, the user can issue an operation instruction to switch the state of the observation window screen 10.

[0066] The observation window screen 10 includes an outer window screen and an inner window screen which are arranged in the middle of the door body 30. The outer window screen and the inner window screen are arranged at intervals, and both are made of transparent materials.

[0067] In a first feasible embodiment, an electric control layer is provided between the outer window screen and the inner window screen, and the control module controls the electric control layer to switch between a transparent state and a non-transparent state by turning on or off the power. The electric control layer is exemplarily a fogged glass, also known as dimming glass, and its transparent state can be switched by turning on and off the power, thereby switching the visible / invisible state of the observation window screen 10.

[0068] In a second feasible embodiment, an annular mounting cover is provided between the outer window screen and the inner window screen, and a plurality of rotatable shielding blades are provided on the annular mounting cover along the circumferential direction. The control module can control the shielding blades to rotate in the plane where the annular mounting cover is located to selectively shield the annular opening of the annular mounting cover. The annular opening of the annular mounting cover is directly opposite to and coaxial with the visible areas on the outer window screen and the inner window screen. When the control module controls the shielding blades to rotate to shield the annular opening, the observation window screen 10 is in an invisible state; when the shielding blades rotate to overlap with the annular area of ​​the annular mounting cover, the entire annular opening is exposed, and the observation window screen 10 is in a visible state.

[0069] In a third achievable implementation, a rolling curtain made of a flexible material is arranged between the outer window screen and the inner window screen, and the control module can control the rolling curtain to rise and fold to a storage state and to descend and stretch to an unfolded state. The rolling curtain can be controlled by a winding device, and the traction rope of the winding device can pull the lower end of the rolling curtain. When the winding device winds and retracts the traction rope, the traction rope drives the rolling curtain to rise and fold to a storage state, and the observation window screen 10 switches to a visible state. When the winding device releases the traction rope, the traction rope stretches, driving the rolling curtain to descend and stretch to an unfolded state, blocking between the outer window screen and the inner window screen, and the observation window screen 10 switches to an invisible state.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for controlling a clothes processing device, characterized in that: The following steps are involved: When the clothing parameters inside the clothing processing device meet the equipment operation requirements, the clothing processing program currently selected by the user is run, and the observation window screen (10) of the clothing processing device is switched from a visible state to an invisible state; After the laundry treatment program is run, the observation window screen (10) can switch between a visible state and an invisible state upon receiving an operation instruction from a user.

2. The method for controlling a clothes processing device according to claim 1, characterized in that: The method for controlling the laundry processing device further comprises step S1: determining whether the laundry parameters inside the laundry processing device meet the equipment operation requirements; The clothing parameters include gravity parameters, and the step S1 includes: S11, detecting the gravity parameters of the clothing; S12, determining whether the gravity parameter is within a preset gravity range, if so, running the clothing processing program currently selected by the user, if not, not running it and issuing a warning signal.

3. The control method of the clothes processing equipment according to claim 1, characterized in that: After receiving the user's operation instruction, it is determined whether the user is the same as the user who selected the clothing processing program. If so, the user's operation instruction for switching the viewing window screen (10) between the visible state and the invisible state is executed; if not, the user's operation instruction is not executed.

4. The method for controlling a clothes processing device according to claim 3, characterized in that: It is determined through the fingerprint information whether the user who issues the operation instruction and the user who selects the clothing processing program are the same user.

5. The control method of the clothes processing equipment according to claim 4, characterized in that: The laundry processing device control method further comprises the following steps: Pre-storing the fingerprint information of the user who selected the clothing treatment program and setting it as the current fingerprint information; The fingerprint information of the user who issues the operation instruction is collected and compared with the current fingerprint information. If the match is successful, the operation instruction of the user for switching the visible state and the invisible state of the observation window screen (10) is executed. If the match fails, the operation instruction of the user is not executed and a prompt signal of the matching failure is issued.

6. The control method of the clothes processing equipment according to claim 5, characterized in that: After the clothing treatment program ends, the user's fingerprint information is received and the received fingerprint information is matched with the current fingerprint information. If the match is successful, the door body (30) of the clothing treatment device is controlled to be in a state that allows it to be opened, and the observation window screen (10) is controlled to switch to a visible state. If the match fails, the door body (30) is controlled to be in a state that prohibits it from being opened, and the observation window screen (10) is controlled to maintain an invisible state.

7. The method for controlling a clothes processing device according to claim 1, characterized in that: After the laundry treatment program is run for a preset time T, the observation window screen (10) is controlled to switch from a visible state to an invisible state.

8. A clothes processing device, characterized in that: include: An observation window screen (10), wherein the observation window screen (10) has a visible state and an invisible state; A control module, the control module being used to control the operation of a clothing treatment program when clothing parameters inside the clothing treatment device meet equipment operation requirements, and being used to control the switching state of the observation window screen (10); A human-computer interaction module is used to receive a user's operating instruction on switching the state of the observation window screen (10), and the human-computer interaction module is communicatively connected with the control module.

9. The clothes processing device according to claim 8, characterized in that: The clothing processing device is provided with a gravity detection component, the clothing parameters include gravity parameters, the gravity detection component is used to monitor the gravity parameters of the clothing, and when the detection value of the gravity detection component is within a preset gravity range, the control module controls the operation of the clothing processing program.

10. The clothes processing device according to claim 8, characterized in that: The observation window screen (10) comprises an outer window screen and an inner window screen which are arranged at intervals; An electric control layer is provided between the outer window screen and the inner window screen, and the control module controls the electric control layer to be powered on or off so as to switch the electric control layer between a transparent state and a non-transparent state; Alternatively, an annular mounting cover is provided between the outer window screen and the inner window screen, and a plurality of rotatable shielding blades are provided on the annular mounting cover along the circumferential direction, and the control module can control the shielding blades to rotate within the plane where the annular mounting cover is located, so as to selectively shield the annular opening of the annular mounting cover; Alternatively, a rolling curtain is provided between the outer window screen and the inner window screen, and the control module can control the rolling curtain to rise and fold to a stowed state and to descend and extend to an unfolded state.

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