Roll screen, roll screen telescopic length determination method, device and equipment

Abstract

The application discloses a reel screen, a reel screen telescopic length determination method, device and equipment, and belongs to the technical field of electronic equipment. The reel screen comprises a stretchable screen body, a reel and a central shaft. The reel rotates around the central shaft to drive the stretchable screen body to stretch or retract. The reel comprises a cavity with a radius varying regularly and a cavity wall, and the cavity is used for determining the stretchable length of the stretchable screen body.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, specifically relating to a rollable screen, a method for determining the telescopic length of the rollable screen, a device, and equipment. Background Technology

[0002] With the continuous development of electronic devices and flexible display technology, rollable screens are being used more and more in electronic devices. Electronic devices with rollable screens are small in size, and the screen body can be stretched, allowing the screen size to be increased or decreased.

[0003] In related technologies, the extension length of a rollable screen is determined by the number of rotations of the roll's reel. However, determining the extension length of a rollable screen by the number of rotations of the reel only provides a total number of rotations, resulting in poor accuracy. Summary of the Invention

[0004] The purpose of this application is to provide a rollable screen, a method, apparatus, and device for determining the telescopic length of the rollable screen, which can solve the problem of inaccurate determination of the telescopic length of the rollable screen body.

[0005] In a first aspect, embodiments of this application provide a rollable screen, including:

[0006] Stretchable screen body, scroll, and central axis;

[0007] Among them, the rotation of the scroll around the central axis causes the stretchable screen to extend and retract;

[0008] The scroll consists of a cavity and cavity walls with a regularly varying radius. The cavity is used to determine the extension and retraction length of the stretchable screen.

[0009] Secondly, embodiments of this application provide a method for determining the telescopic length of a rollable screen, applied to the rollable screen provided in the first aspect of embodiments of this application. The method for determining the telescopic length of the rollable screen includes:

[0010] Obtain the first distance from the central axis to the cavity wall;

[0011] After the stretchable screen body extends and retracts, the second distance from the central axis to the cavity wall is obtained;

[0012] The telescopic length of the stretchable screen is determined based on the first distance and the second distance.

[0013] Thirdly, embodiments of this application provide a device for determining the telescopic length of a rollable screen, applied to the rollable screen provided in the first aspect of embodiments of this application. The device for determining the telescopic length of a rollable screen includes:

[0014] The first acquisition module is used to acquire the first distance from the central axis to the cavity wall;

[0015] The second acquisition module is used to acquire the second distance from the central axis to the cavity wall after the stretchable screen body is extended or retracted;

[0016] The determination module is used to determine the extension length of the stretchable screen body based on the first distance and the second distance.

[0017] Fourthly, embodiments of this application provide an electronic device, including a rollable screen, a processor, and a memory as provided in the first aspect of this application. The memory stores programs or instructions that can run on the processor. When the programs or instructions are executed by the processor, they implement the steps of the rollable screen extension / retraction length determination method as described in the second aspect.

[0018] Fifthly, embodiments of this application provide a readable storage medium storing a program or instructions, which, when executed by a processor, implement the steps of the scroll screen retraction length determination method as described in the second aspect.

[0019] In a sixth aspect, embodiments of this application provide a chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the steps of the rollable screen extension / retraction length determination method as described in the second aspect.

[0020] In a seventh aspect, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the scroll screen retraction length determination method as described in the second aspect.

[0021] In this embodiment, the roll of the rollable screen includes a cavity with a regularly varying radius, which is used to determine the telescopic length of the stretchable screen. Thus, by measuring the regularly varying radius of the cavity of the rollable screen, the telescopic length of the stretchable screen can be determined, improving the accuracy of determining the telescopic length of the rollable screen. Attached Figure Description

[0022] Figure 1 This is a first schematic diagram of a rollable screen provided in an embodiment of this application;

[0023] Figure 2 This is a first cross-sectional schematic diagram of the rollable screen provided in the embodiments of this application;

[0024] Figure 3 This is a schematic diagram of the stretchable screen body provided in the embodiment of this application;

[0025] Figure 4 This is a second schematic diagram of the rollable screen provided in the embodiments of this application;

[0026] Figure 5 This is a second cross-sectional schematic diagram of the rollable screen provided in the embodiments of this application;

[0027] Figure 6 This is a schematic diagram of the motion of the distance sensor provided in the embodiments of this application;

[0028] Figure 7 This is a flowchart illustrating the method for determining the telescopic length of a rollable screen provided in an embodiment of this application;

[0029] Figure 8 This is a schematic diagram of the structure of the roll-up screen telescopic length determination device provided in the embodiments of this application;

[0030] Figure 9 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application;

[0031] Figure 10 This is a schematic diagram of the hardware structure of an electronic device that implements the embodiments of this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0033] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0034] The following description, in conjunction with the accompanying drawings, details the rollable screen, rollable screen extension length determination method, apparatus, and equipment provided in this application through specific embodiments and application scenarios.

[0035] The rollable screen provided in this application includes a stretchable screen body, a roll, and a central axis. The roll rotates around the central axis to cause the stretchable screen body to extend and retract. The roll includes a cavity and cavity walls with a regularly changing radius. The cavity is used to determine the extension and retraction length of the stretchable screen body.

[0036] In this embodiment, the roll of the rollable screen includes a cavity with a regularly varying radius, which is used to determine the telescopic length of the stretchable screen. Thus, by measuring the regularly varying radius of the cavity of the rollable screen, the telescopic length of the stretchable screen can be determined, improving the accuracy of determining the telescopic length of the rollable screen.

[0037] In some possible implementations of embodiments of this application, the cavity includes a cavity whose radius varies regularly along the circumferential direction of the central axis. For example, as shown... Figure 1 As shown. Figure 1 This is a first schematic diagram of a rollable screen provided in the embodiments of this application. The rollable screen 100 includes a stretchable screen body 101, a roll 102 and a central axis 103. The roll 102 includes a cavity 1021 and a cavity wall 1022 whose radius changes regularly along the circumferential direction of the central axis.

[0038] For example, such as Figure 2 As shown. Figure 2 This is a first cross-sectional schematic diagram of the rollable screen provided in the embodiments of this application.

[0039] exist Figure 1 and Figure 2 In the middle, the scroll 102 rotates around the central axis 103, causing the stretchable screen body 101 to expand and contract, thereby changing the screen display area.

[0040] exist Figure 1 and Figure 2 In the central axis 103, along the circumferential direction and in a clockwise direction, the radius r of the cavity 1021 gradually decreases, while the thickness of the cavity wall 1022 gradually increases. R is the radius of the scroll 102. It can be understood that the thickness of the cavity wall 1022 is equal to the difference between the radius R of the scroll 102 and the radius r of the cavity 1021.

[0041] In some possible implementations of the embodiments of this application, the radius r of the cavity 1021 can also gradually decrease in a clockwise direction, and the thickness of the cavity wall 1022 can gradually decrease. The specific rules governing the change of the radius are not limited here.

[0042] In this embodiment, the stretchable length of the rollable screen can be determined by using the cavity whose radius changes regularly along the circumferential direction of the central axis, which is included in the roll of the rollable screen. This can improve the accuracy of determining the stretchable length of the rollable screen.

[0043] In some possible implementations of this application's embodiments, the rollable screen 100 may further include a sensor fixed to the central axis 103 for measuring the distance from the central axis 103 to the cavity wall 1022. In some possible implementations of this application's embodiments, this sensor may be a distance sensor or a pressure sensor. When the sensor is a pressure sensor, it is necessary to convert the pressure detected by the pressure sensor into a distance. This application's embodiments do not limit the method used for converting pressure into distance; any available method can be applied to this application's embodiments.

[0044] It is understandable that the distance from the central axis 103 to the cavity wall 1022 is the radius of the cavity 1021 along the intersection line of the central axis 103 and the retractable screen 101.

[0045] When the scroll 102 rotates around the central axis 103, causing the stretchable screen 101 to expand and contract, the radius of the cavity 1021 changes along the central axis 103 towards the intersection line of the scroll 102 and the stretchable screen 101. In other words, the distance from the central axis 103 to the cavity wall 1022 changes. This distance can be measured using the aforementioned sensor.

[0046] For example, such as Figure 3 As shown, Figure 3 This is a schematic diagram of the stretchable screen body extension and retraction provided in the embodiment of this application. Before the stretchable screen body 101 extends and retracts, the distance from the central axis 103 to the cavity wall 1022 is r0. After the stretchable screen body 101 extends and retracts, the distance from the central axis 103 to the cavity wall 1022 is r1.

[0047] In this embodiment of the application, by fixing a sensor on the central axis of the rollable screen to measure the distance from the central axis to the cavity wall, the distance from the central axis to the cavity wall can be accurately measured using this sensor, thereby improving the accuracy of determining the stretchable length of the rollable screen body.

[0048] In some possible implementations of embodiments of this application, the cavity includes a cavity whose radius varies regularly along the axial direction of the central axis. For example, as shown... Figure 4 As shown. Figure 4 This is a second schematic diagram of the rollable screen provided in the embodiments of this application. The rollable screen 100 includes a stretchable screen body 101, a roll 102 and a central axis 103. The roll 102 includes a cavity 1021 and a cavity wall 1022 whose radius changes regularly along the axial direction of the central axis.

[0049] For example, such as Figure 5 As shown. Figure 5 This is a second cross-sectional schematic diagram of the rollable screen provided in the embodiments of this application.

[0050] exist Figure 4 and Figure 5In the middle, the scroll 102 rotates around the central axis 103, causing the stretchable screen body 101 to expand and contract, thereby changing the screen display area.

[0051] exist Figure 4 and Figure 5 In the middle, along the axial direction of the central axis 103, the radius r of the cavity 1021 gradually increases, while the thickness of the cavity wall 1022 gradually decreases. R is the radius of the scroll 102. It can be understood that the thickness of the cavity wall 1022 is equal to the difference between the radius R of the scroll 102 and the radius r of the cavity 1021.

[0052] In some possible implementations of the embodiments of this application, the radius r of the cavity 1021 can be gradually reduced along the axial direction of the central axis 103, and the thickness of the cavity wall 1022 can be gradually increased.

[0053] In this embodiment of the application, the stretchable length of the rollable screen can be determined by the cavity whose radius changes regularly along the axial direction of the central axis, which is included in the roll of the rollable screen. This can improve the accuracy of determining the stretchable length of the rollable screen.

[0054] In some possible implementations of the embodiments of this application, the rollable screen 100 may further include a sensor capable of moving in the axial direction of the central axis 103 with the extension and retraction of the stretchable screen body 101, for measuring the distance from the central axis 103 to the cavity wall 1022. In some possible implementations of the embodiments of this application, the sensor may be a distance sensor.

[0055] It is understandable that the distance from the central axis 103 to the cavity wall 1022 is the radius of the cavity 1021 along the intersection line of the central axis 103 and the retractable screen 101.

[0056] In this embodiment, a sensor that can move along the axial direction of the central axis of the rollable screen as the stretchable screen body extends and retracts can accurately measure the distance from the central axis to the cavity wall, thereby improving the accuracy of determining the extension and retraction length of the rollable screen body.

[0057] In some possible implementations of the embodiments of this application, the scroll screen 100 may further include: a spiral drive track 104 disposed on the central axis 103, wherein the sensor 105 is disposed on the spiral drive track 104.

[0058] For example, such as Figure 6 As shown, Figure 6 This is a schematic diagram of the motion of the distance sensor provided in an embodiment of this application. Figure 6 In the process, as the stretchable screen 101 extends and retracts, the distance sensor 105 moves along the axial direction of the central axis 103 on the spiral drive track 104, thereby measuring the distance from the central axis 103 to the cavity wall 1022 in real time.

[0059] In this embodiment of the application, a helical drive track is set on the central axis of the rollable screen, and a sensor for measuring the distance from the central axis to the cavity wall is set on the helical drive track. This allows the sensor to move along the helical drive track, thereby accurately measuring the distance from the central axis to the cavity wall, and thus improving the accuracy of determining the stretchable length of the rollable screen.

[0060] Figure 7 This is a flowchart illustrating the method for determining the telescopic length of a rollable screen provided in an embodiment of this application. Figure 7 As shown, the method for determining the telescopic length of a rollable screen may include:

[0061] S701: Obtain the first distance from the central axis of the scroll screen to the cavity wall of the scroll;

[0062] S702: After the retractable screen body of the rollable screen is extended or retracted, obtain the second distance from the central axis of the rollable screen to the cavity wall of the roll.

[0063] S703: Determine the stretchable length of the rollable screen body based on the first distance and the second distance.

[0064] The specific implementation methods of the above steps will be described in detail below.

[0065] In this embodiment, a first distance from the central axis of the rollable screen to the cavity wall of the roll is obtained; a second distance is obtained after the rollable screen body has extended or retracted; then, the extension / retraction length of the rollable screen body is determined based on the first and second distances. Thus, by using the two distances from the central axis of the rollable screen to the cavity wall of the roll before and after extension / retraction, the extension / retraction length of the rollable screen body can be determined, improving the accuracy of determining the extension / retraction length of the rollable screen body.

[0066] In some possible implementations of the embodiments of this application, the cavity of the scroll includes a cavity whose radius varies regularly along the circumferential direction of the central axis of the scroll screen, as described above. Figure 1 and Figure 2 As shown. S703 may include: when the distance from the central axis of the roll-up screen to the cavity wall of the roll-up screen is zero for the number of times k is zero when the distance is equal to the radius R of the roll-up screen after the roll-up screen has been extended or retracted, the extension / retraction length Δfinal of the roll-up screen is determined according to the following formula (1):

[0067] Δfinal=|2π*(Yn-Ym)| (1)

[0068] When the distance from the central axis of the rollable screen to the cavity wall of the roll is R after the rollable screen body has extended and retracted, and the number of times k is not zero, the extension and retraction length Δfinal of the rollable screen body is determined according to the following formula (2):

[0069]

[0070] In formulas (1) and (2), Yn is the second distance and Ym is the first distance.

[0071] For example, such as Figure 3 As shown. Assuming in Figure 3 The number of times k when the distance from the central shaft 103 to the cavity wall 1022 is equal to the radius R of the scroll 102 after the stretchable screen 101 is extended or retracted is zero is as follows: Figure 3 The stretchable screen 101 shown has a stretch length of |2π*(r0-r1)|.

[0072] Assuming in Figure 3 The number of times k is 2 when the distance from the central shaft 103 to the cavity wall 1022 is equal to the radius R of the scroll 102 after the stretchable screen 101 is extended or retracted. Figure 3 The telescopic length of the stretchable screen 101 shown is That is, |2π*(r0-r1)|+2πR.

[0073] It is understandable that when the distance from the central axis 103 to the cavity wall 1022 is equal to the radius R of the scroll 102 for n times (n is a positive integer), the scroll 102 rotates n-1 times.

[0074] In this embodiment, the stretch length of the rollable screen can be determined by the cavity whose radius changes regularly along the circumferential direction of the central axis, which is included in the roll of the rollable screen, and by the two distances from the central axis of the rollable screen to the cavity wall of the roll before and after the stretchable screen body of the rollable screen is stretched, which can improve the accuracy of determining the stretch length of the rollable screen body.

[0075] In some possible implementations of the embodiments of this application, the cavity of the scroll includes a cavity whose radius varies regularly along the axial direction of the central axis of the scroll screen, as described above. Figure 4 and Figure 5 As shown. S703 may include: determining a first stretch length corresponding to a first distance and a second stretch length corresponding to a second distance based on the correspondence between distance and stretch length; and determining the absolute value of the difference between the first stretch length and the second stretch length as the stretch length of the rollable screen.

[0076] In some possible implementations of the embodiments of this application, the correspondence between distance and the stretchable screen extension length can be pre-initialized.

[0077] For example, when the stretchable screen is in its initial state (i.e., unstretched state), the distance from the central axis 103 to the cavity wall 1022 (i.e., the radius of the cavity 1021 at this time) is r0, and the extension distance of the stretchable screen is M0, which is 0 at this time. When the stretchable screen is fully stretched, the distance from the central axis 103 to the cavity wall 1022 (i.e., the radius of the cavity 1021 at this time) is r1, and the extension distance of the stretchable screen is M1. Then, according to the formula for the distance between two points, the distance from the central axis 103 to the cavity wall 1022 (i.e., the radius of the cavity 1021 at this time) is calculated to be r2, and the extension distance of the stretchable screen is M2 = M1*(r2-r0) / (r1-r0).

[0078] In some possible implementations of the embodiments of this application, the stretchable screen can be stretched by M1*(r2-r0) / (r1-r0), and the distance sensor 105 can be used to measure whether the distance from the central axis 103 to the cavity wall 1022 (i.e. the radius of the cavity 1021 at this time) is r2, so as to ensure the accuracy of the correspondence between the distance and the stretchable screen length.

[0079] For example, the correspondence between distance and the telescopic length of the stretchable screen is shown in Table 1.

[0080] Table 1

[0081] r0 0 r2 M1*(r2-r0) / (r1-r0) r3 M1*(r3-r0) / (r1-r0) r4 M1*(r4-r0) / (r1-r0) r1 M1

[0082] When the first distance is r3, the extension length of the stretchable screen 101 is: M1*(r3-r0) / (r1-r0). When the second distance is r4, the extension length of the stretchable screen 101 is: M1*(r4-r0) / (r1-r0).

[0083] At this time, the extension length of the stretchable screen 101 before and after extension is:

[0084]

[0085] In this embodiment, the retractable length of the rollable screen can be determined by the cavity whose radius varies regularly along the axial direction of the central axis, which is included in the roll of the rollable screen. This improves the accuracy of determining the retractable length of the rollable screen.

[0086] It should be noted that the scroll screen extension length determination method provided in this application embodiment can be executed by a scroll screen extension length determination device. This application embodiment uses the scroll screen extension length determination device executing the scroll screen extension length determination method as an example to illustrate the scroll screen extension length determination device provided in this application embodiment.

[0087] Figure 8This is a schematic diagram of the structure of the roll-up screen telescopic length determination device provided in an embodiment of this application. Figure 8 As shown, the scroll screen telescopic length determining device 800 may include:

[0088] The first acquisition module 801 is used to acquire the first distance from the central axis of the scroll screen to the cavity wall of the scroll.

[0089] The second acquisition module 802 is used to acquire the second distance from the central axis of the roll screen to the cavity wall of the roll screen after the stretchable screen body of the roll screen is extended or retracted.

[0090] The determining module 803 is used to determine the stretchable length of the rollable screen body based on the first distance and the second distance.

[0091] In this embodiment, a first distance from the central axis of the rollable screen to the cavity wall of the roll is obtained; a second distance is obtained after the rollable screen body has extended or retracted; then, the extension / retraction length of the rollable screen body is determined based on the first and second distances. Thus, by using the two distances from the central axis of the rollable screen to the cavity wall of the roll before and after extension / retraction, the extension / retraction length of the rollable screen body can be determined, improving the accuracy of determining the extension / retraction length of the rollable screen body.

[0092] In some possible implementations of this application's embodiments, the cavity of the scroll includes a cavity whose radius varies regularly along the circumferential direction of the central axis of the scroll screen; the determining module 803 can specifically be used for:

[0093] When the number of times k from the central axis of the roll screen to the cavity wall of the roll screen to the radius R of the roll screen is zero after the roll screen stretches and extends, the stretching length of the roll screen is determined according to the above formula (1).

[0094] After the retractable screen body of the rollable screen has expanded and contracted, when the number of times k from the central axis of the rollable screen to the cavity wall of the roll is R is not zero, the expansion and contraction length of the retractable screen body of the rollable screen is determined according to the above formula (2).

[0095] In this embodiment, the stretch length of the rollable screen can be determined by the cavity whose radius changes regularly along the circumferential direction of the central axis, which is included in the roll of the rollable screen, and by the two distances from the central axis of the rollable screen to the cavity wall of the roll before and after the stretchable screen body of the rollable screen is stretched, which can improve the accuracy of determining the stretch length of the rollable screen body.

[0096] In some possible implementations of this application's embodiments, the cavity of the scroll includes a cavity whose radius varies regularly along the axial direction of the central axis of the scroll screen; the determining module 803 can specifically be used for:

[0097] Based on the correspondence between distance and telescopic length, determine the first telescopic length corresponding to the first distance and the second telescopic length corresponding to the second distance;

[0098] The absolute value of the difference between the first and second telescopic lengths is determined as the telescopic length of the rollable screen body.

[0099] In this embodiment, the retractable length of the rollable screen can be determined by the cavity whose radius varies regularly along the axial direction of the central axis, which is included in the roll of the rollable screen. This improves the accuracy of determining the retractable length of the rollable screen.

[0100] The device for determining the retractable length of the scroll screen in this embodiment can be an electronic device or a component within an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This embodiment does not specifically limit the device.

[0101] The device for determining the retractable length of the scroll screen in this embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this embodiment does not specifically limit its use.

[0102] The roll-up screen telescopic length determination device provided in this application embodiment can achieve... Figure 7 To avoid repetition, the various processes in the embodiment of the method for determining the telescopic length of the rollable screen shown will not be described again here.

[0103] Optional, such as Figure 9As shown in the figure, this application embodiment also provides an electronic device 900, including the rollable screen 100, processor 901 and memory 902 shown in the embodiment of this application. The memory 902 stores a program or instructions that can be run on the processor 901. When the program or instructions are executed by the processor 901, they implement the various steps of the above-described rollable screen extension length determination method embodiment and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0104] In some possible implementations of the embodiments of this application, the processor 901 may include a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0105] In some possible implementations of embodiments of this application, memory 902 may include read-only memory (ROM), random access memory (RAM), disk storage media device, optical storage media device, flash memory device, electrical, optical, or other physical / tangible memory storage device. Therefore, typically, memory 902 includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the scroll screen retraction length determination method according to embodiments of this application.

[0106] Figure 10 This is a schematic diagram of the hardware structure of an electronic device that implements the embodiments of this application.

[0107] The electronic device 1000 includes, but is not limited to, components such as: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.

[0108] Those skilled in the art will understand that the electronic device 1000 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1010 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 10 The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0109] In some possible implementations of the embodiments of this application, the display unit 1006 may include the scroll screen 100 shown in the embodiments of this application.

[0110] The processor 1010 is used to: obtain a first distance from the central axis of the rollable screen to the cavity wall of the roll; obtain a second distance from the central axis of the rollable screen to the cavity wall of the roll after the stretchable screen body of the rollable screen has been extended or retracted; and determine the extension or retraction length of the stretchable screen body of the rollable screen based on the first distance and the second distance.

[0111] In this embodiment, a first distance from the central axis of the rollable screen to the cavity wall of the roll is obtained; a second distance is obtained after the rollable screen body has extended or retracted; then, the extension / retraction length of the rollable screen body is determined based on the first and second distances. Thus, by using the two distances from the central axis of the rollable screen to the cavity wall of the roll before and after extension / retraction, the extension / retraction length of the rollable screen body can be determined, improving the accuracy of determining the extension / retraction length of the rollable screen body.

[0112] In some possible implementations of this application's embodiments, the cavity of the scroll includes a cavity whose radius varies regularly along the circumferential direction of the scroll screen's central axis; the processor 1010 can specifically be used for:

[0113] When the distance from the central axis of the roll screen to the cavity wall of the roll screen is equal to the radius R of the roll screen after the roll screen has been stretched and extended, the number of times k is zero is determined according to the above formula (1).

[0114] When the distance from the central axis of the roll screen to the cavity wall of the roll screen is R after the roll screen has been stretched and extended, the number of times k is not zero, the stretching length of the roll screen is determined according to the above formula (2).

[0115] In this embodiment, the stretch length of the rollable screen can be determined by the cavity whose radius changes regularly along the circumferential direction of the central axis, which is included in the roll of the rollable screen, and by the two distances from the central axis of the rollable screen to the cavity wall of the roll before and after the stretchable screen body of the rollable screen is stretched, which can improve the accuracy of determining the stretch length of the rollable screen body.

[0116] In some possible implementations of this application's embodiments, the cavity of the scroll includes a cavity whose radius varies regularly along the axial direction of the central axis of the scroll screen; the processor 1010 can specifically be used for:

[0117] Based on the correspondence between distance and telescopic length, determine the first telescopic length corresponding to the first distance and the second telescopic length corresponding to the second distance;

[0118] The absolute value of the difference between the first and second telescopic lengths is determined as the telescopic length of the rollable screen body.

[0119] In this embodiment, the retractable length of the rollable screen can be determined by using the cavity whose radius varies regularly along the axial direction of the central axis, which is part of the roll of the rollable screen. This improves the accuracy of determining the retractable length of the rollable screen.

[0120] It should be understood that, in this embodiment, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042. The GPU 10041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0121] The memory 1009 can be used to store software programs and various data. The memory 1009 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1009 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1009 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0122] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into the processor 1010.

[0123] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described method for determining the retractable length of a scroll screen and achieve the same technical effect. To avoid repetition, these will not be described again here.

[0124] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes a computer-readable storage medium, and examples of computer-readable storage media include non-transitory computer-readable storage media such as ROM, RAM, magnetic disks, or optical disks.

[0125] This application also provides a chip, including a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described method embodiment for determining the retractable length of a scroll screen, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0126] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0127] This application also provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described method embodiment for determining the retractable length of a scroll screen, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0128] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0129] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the related technology, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0130] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A rollable screen, characterized in that, The rollable screen includes: Stretchable screen, scroll, central axis, and sensor; The scroll rotates around the central axis, causing the stretchable screen to extend and retract. The scroll includes a cavity and cavity walls with a regularly varying radius. The cavity is used to determine the telescopic length of the stretchable screen. The cavity includes a cavity with a radius that regularly varies along the circumferential direction of the central axis. The sensor is fixed on the central axis and is used to measure the distance from the central axis to the cavity wall.

2. A rollable screen, characterized in that, The rollable screen includes: Stretchable screen, scroll, central axis, sensor, and spiral drive track; The scroll rotates around the central axis, causing the stretchable screen to extend and retract. The scroll includes a cavity and cavity walls with a regularly varying radius. The cavity is used to determine the telescopic length of the stretchable screen. The cavity includes a cavity with a radius that regularly varies along the axial direction of the central axis. The spiral drive track is mounted on the central axis; The sensor is mounted on the helical drive track and can move along the axial direction of the central axis as the stretchable screen body extends and retracts, for measuring the distance from the central axis to the cavity wall.

3. A method for determining the telescopic length of a rollable screen, characterized in that, Applied to the rollable screen of claim 1; the method includes: Obtain the first distance from the central axis to the cavity wall; After the stretchable screen body extends and retracts, the second distance from the central axis to the cavity wall is obtained; The number of times the distance from the central axis to the cavity wall is equal to the radius R of the roll after the stretchable screen body has extended or retracted. When the value is zero, the telescopic length of the stretchable screen is determined according to the following formula. : The number of times the distance from the central axis to the cavity wall is R after the stretchable screen body has extended or retracted. When the value is not zero, the telescopic length of the stretchable screen is determined according to the following formula. : in, The second distance, This is the first distance.

4. A method for determining the telescopic length of a rollable screen, characterized in that, Applied to the rollable screen of claim 2; the method includes: Obtain the first distance from the central axis to the cavity wall; After the stretchable screen body extends and retracts, the second distance from the central axis to the cavity wall is obtained; Based on the correspondence between distance and telescopic length, determine the first telescopic length corresponding to the first distance and the second telescopic length corresponding to the second distance; The absolute value of the difference between the first telescopic length and the second telescopic length is determined as the telescopic length of the stretchable screen.

5. A device for determining the telescopic length of a roll-up screen, characterized in that, Applied to the rollable screen of claim 1; the device comprises: The first acquisition module is used to acquire the first distance from the central axis to the cavity wall; The second acquisition module is used to acquire the second distance from the central axis to the cavity wall after the stretchable screen body is extended or retracted; The module determines the number of times the distance from the central axis to the cavity wall is equal to the radius R of the roll after the stretchable screen body has extended or retracted. When the value is zero, the telescopic length of the stretchable screen is determined according to the following formula. : The number of times the distance from the central axis to the cavity wall is R after the stretchable screen body has extended or retracted. When the value is not zero, the telescopic length of the stretchable screen is determined according to the following formula. : in, The second distance, This is the first distance.

6. A device for determining the telescopic length of a roll-up screen, characterized in that, Applied to the rollable screen of claim 2; the device comprises: The first acquisition module is used to acquire the first distance from the central axis to the cavity wall; The second acquisition module is used to acquire the second distance from the central axis to the cavity wall after the stretchable screen body is extended or retracted; The determining module is used to determine the first stretch length corresponding to the first distance and the second stretch length corresponding to the second distance based on the correspondence between distance and stretch length; and to determine the absolute value of the difference between the first stretch length and the second stretch length as the stretch length of the stretchable screen.

7. An electronic device, characterized in that, The electronic device includes: a rollable screen as described in claim 1 or 2, a processor, and a memory, wherein the memory stores a program or instructions that can run on the processor, and the program or instructions, when executed by the processor, implement the steps of the rollable screen extension length determination method as described in claim 3 or 4.

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