Electronic device and control method thereof

Abstract

The present application discloses an electronic device and a control method for the electronic device. The electronic device includes: a rollable screen, the rollable screen including a roller and a flexible screen wound around the roller; a driving mechanism, the driving mechanism being power-coupled to at least one of the roller and the flexible screen; a photoelectric sensor, the photoelectric sensor being configured to collect motion information of the flexible screen, the motion information being used to characterize the stretching direction and stretching stroke of the flexible screen; and a main control chip, the main control chip being electrically connected to the photoelectric sensor and the driving mechanism. The electronic device of the present application has a simple structure and does not affect the normal operation of other devices of the whole machine.

Description

Technical Field

[0001] This application belongs to the field of electronic technology, and particularly relates to an electronic device and a control method for an electronic device. Background Art

[0002] The scroll screen can contract and expand, enabling the corresponding electronic device to instantaneously adjust the display screen size according to different requirements.

[0003] In the related art, when using a motor to drive the scroll screen to expand and contract, the travel of the scroll screen can be calculated by measuring the rotation angle of the motor, or the travel of the scroll screen can be measured by electromagnetic coupling. During the implementation of this application, the applicant found that there are at least the following problems in the prior art:

[0004] (1) When using a motor to drive the scroll screen to expand and contract, an electrode with a coding wheel is usually set in the motor, and a dedicated analysis software is required to process the coding signal output by the motor, which increases the weight and occupied space of the whole machine, and increases the design cost;

[0005] (2) When measuring the travel of the scroll screen by electromagnetic coupling, a strong magnetic field needs to be set, which will interfere with the normal operation of other devices of the whole machine. Summary of the Invention

[0006] The purpose of the embodiments of this application is to provide an electronic device and a control method for an electronic device, which at least solve the problems that the structure is complex and it is easy to interfere with the operation of other devices of the whole machine when measuring the travel of the scroll screen in the related art.

[0007] To solve the above technical problems, this application is implemented as follows:

[0008] In a first aspect, the embodiments of this application provide an electronic device, including:

[0009] A scroll screen, where the scroll screen includes a scroll and a flexible screen wound around the scroll;

[0010] A driving mechanism, where the driving mechanism is power-coupled to at least one of the scroll and the flexible screen;

[0011] A photoelectric sensor, where the photoelectric sensor is used to collect motion information of the flexible screen, and the motion information includes the expansion and contraction direction and the expansion and contraction travel of the flexible screen.

[0012] In a second aspect, the embodiments of this application provide a control method for an electronic device, and the method includes:

[0013] When the signal collected by the photoelectric sensor changes, determine the motion information of the flexible screen;

[0014] Based on the motion information, control the driving mechanism and adjust the display information of the flexible screen.

[0015] In a third aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the third aspect are implemented.

[0016] In a fourth aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement the method described in the third aspect.

[0017] In a fifth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium and is executed by at least one processor to implement the method described in the third aspect.

[0018] In the embodiments of the present application, motion information during the telescopic movement of the scroll screen is obtained through a photoelectric sensor, and a main control chip controls a driving mechanism to adjust the display information on the scroll screen based on the motion information of the scroll screen; the electronic device has a simple structure and does not affect the normal operation of other devices of the whole machine.

[0019] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is one of the schematic structural diagrams of the electronic device provided by the embodiment of the present application;

[0021] Figure 2 is the schematic structural diagram of the scroll screen provided by the embodiment of the present application;

[0022] Figure 3 is another schematic structural diagram of the electronic device provided by the embodiment of the present application;

[0023] Figure 4 is the interaction schematic diagram of the electronic device provided by the embodiment of the present application;

[0024] Figure 5 is still another schematic structural diagram of the electronic device provided by the embodiment of the present application;

[0025] Figure 6 is one of the schematic flowcharts of the control method of the electronic device provided by the embodiment of the present application;

[0026] Figure 7 is one of the light intensity distribution diagrams of coherent light provided by the embodiment of the present application;

[0027] Figure 8 It is the second light intensity distribution diagram of coherent light provided by an embodiment of the present application;

[0028] Figure 9 It is the second schematic flowchart of the control method of the electronic device provided by an embodiment of the present application.

[0029] Reference numerals:

[0030] 100: Reel screen; 120: Flexible screen; 200: Driving mechanism;

[0031] 300: Photoelectric sensor; 310: Coherent light source; 320: Photoelectric diode array; 330: Control circuit;

[0032] 331: Controller; 332: Driver; 333: Digital signal processor; 334: Analog-to-digital converter;

[0033] 340: Substrate; 350: Optical barrier; 400: Main control chip; 410: Display driving module. Detailed implementation manners

[0034] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0037] Such as Figure 1 - Figure 2As shown, an electronic device according to some embodiments of the present application includes a rollable screen 100, a driving mechanism 200, and a photoelectric sensor 300.

[0038] Among them, the rollable screen 100 includes a reel and a flexible screen 120 wound around the reel.

[0039] In some embodiments, the flexible screen 120 in the rollable screen 100 can be wound around the reel, and the flexible screen 120 can be stretched or contracted by the rolling of the reel.

[0040] In some embodiments, the reel can be disposed at the side position of the fully opened flexible screen 120. For example, when the reel is disposed at the left side of the fully opened flexible screen 120, the flexible screen 120 contracts to the left and winds around the reel or unfolds to the right to be fully opened.

[0041] The driving mechanism 200 is power-coupled to at least one of the reel and the flexible screen 120, and is configured to adjust the telescopic amount of the flexible screen 120 relative to the reel.

[0042] In some embodiments, the driving mode of the driving mechanism 200 can be motor driving, pneumatic driving, hydraulic driving, etc.

[0043] In some embodiments, the driving mechanism 200 can be directly coupled to the flexible screen 120 to drive the extension or contraction of the flexible screen 120; it can also be coupled to the reel, and drive the extension or contraction of the flexible screen 120 through the rotation of the reel; it can also be coupled to both the flexible screen 120 and the reel simultaneously to drive the extension or contraction of the flexible screen 120. There is no specific limitation in this embodiment.

[0044] The photoelectric sensor 300 is configured to collect the motion information of the flexible screen 120, and the motion information includes the telescopic direction and telescopic stroke of the flexible screen 120.

[0045] In this embodiment, after the flexible screen 120 is telescoped, the display size of the flexible screen 120 after unfolding or contracting can be determined according to the motion information of the flexible screen 120 collected by the photoelectric sensor 300. Furthermore, the display content of the flexible screen 120 can be adjusted according to the display size, or the telescopic state of the flexible screen 120 in the subsequent process can be controlled.

[0046] In some embodiments, the motion information collected by the photoelectric sensor 300 can be the motion information when the flexible screen 120 extends or contracts, including the distance and direction of the motion of the flexible screen 120. For example, if the flexible screen 120 moves outward relative to the reel by a certain distance, it can indicate that the area of the flexible screen 120 relatively increases; if the flexible screen 120 moves inward relative to the reel by a certain distance, it can indicate that the area of the flexible screen 120 relatively decreases.

[0047] In this embodiment, the optoelectronic sensor 300 is mainly used to receive the signal of the flexible screen 120 to determine its motion information. The optoelectronic sensor 300 can be composed of a signal receiver and a processor, and its structure is relatively simple. In addition, if the signal received by the optoelectronic sensor 300 is an optical signal, the motion information of the flexible screen 120 can be detected according to the change of the optical signal sent by the flexible screen 120, and this detection process will not interfere with the normal operation of other devices of the whole machine.

[0048] In this embodiment, the optoelectronic sensor 300 can calculate the displacement of the flexible screen 120 according to the energy change of the pixels on the flexible screen 120, or calculate the displacement of the flexible screen 120 by using the reflection situation of a fixed light source in the light-impermeable area of the flexible screen 120. For example, the optoelectronic sensor 300 is fixed in a certain area of the scroll screen device and emits coherent light to the driving mechanism 200 of the scroll screen 100. The coherent light reflected on the scroll screen 100 reaches the photosensitive device of the optoelectronic sensor 300. Since the position of the laser reflected by the scroll screen 100 will change when the driving mechanism 200 moves, the photosensitive device can determine the motion information of the scroll screen 100 according to the energy change of the reflected light.

[0049] In some embodiments, the electronic device further includes a main control chip 400.

[0050] The main control chip 400 is electrically connected to the optoelectronic sensor 300 and the driving mechanism 200, and is used to control the driving mechanism 200 based on the motion information.

[0051] In this embodiment, the way of electrical connection can be a wired connection. For example, the electrical connection between each electrical device is realized through a cable; the way of electrical connection can also be a wireless connection. For example, the electrical connection between each electrical device is carried out through a wireless network or Bluetooth, etc.

[0052] In some embodiments, after the optoelectronic sensor 300 sends the collected motion information to the main control chip 400, the main control chip 400 calculates the telescopic situation of the flexible screen 120 according to the motion information, and controls the driving mechanism 200 to adjust the display information on the scroll screen 100.

[0053] In Figure 3In the illustrated embodiment, the optoelectronic sensor 300 is electrically connected to the main control chip 400 through the communication line I2C and the interrupt line INT, and the display driving module 410 in the main control chip 400 is electrically connected to the scroll screen 100 through the MIPI interface; after the driving mechanism 200 of the scroll screen 100 moves outward by a certain distance, the main control chip 400 calculates the screen size of the scroll screen 100 at the current moment according to the motion information of the driving mechanism 200, and then adapts the original display content of the scroll screen 100 according to the current screen size. For example, after the display screen of the scroll screen 100 becomes larger, the sizes of videos, pictures or texts on the display screen can be increased accordingly, or when the sizes of videos, pictures or texts remain unchanged, the display content can be increased appropriately.

[0054] According to the electronic device of the embodiment of the present application, the motion information during the expansion and contraction of the scroll screen is obtained through the optoelectronic sensor, and the driving mechanism is controlled by the main control chip based on the motion information of the scroll screen to adjust the display information on the scroll screen. The structure of the electronic device is simple and does not affect the normal operation of other devices of the whole machine.

[0055] In some embodiments, the optoelectronic sensor 300 includes: a coherent light source 310 for emitting coherent light; a photodiode array 320 for collecting reflected light; and a control circuit 330 connected to the coherent light source 310 and the photodiode array 320 for determining the motion information.

[0056] In this embodiment, coherent light is a kind of light with the same vibration frequency, direction and constant phase difference, such as laser, etc., and the coherent light source 310 can be a laser emitter.

[0057] In some embodiments, the coherent light emitted by the coherent light source 310 is incident on the driving mechanism 200, and the driving mechanism 200 reflects the coherent light to the surface of the photodiode array 320.

[0058] The photodiode array 320 is a kind of light detector, and the photodiode array 320 is composed of a plurality of photodiodes; the area of the PN junction of the photodiode is relatively large, which can receive more incident light, and the sensitivity of the photodiode when detecting the change of light intensity is significantly higher than that of an ordinary diode, and it can accurately collect the information of the change of the light intensity of the incident light.

[0059] In this embodiment, when the coherent light is diffusely reflected on the outer surface of the driving mechanism 200, the reflected coherent light will be strengthened or canceled with each other, and then the photodiode array 320 collects the reflected coherent light. The motion change of the driving mechanism 200 can be calculated according to the change of the light intensity received by the detectors at different positions on the photodiode array 320.

[0060] In some embodiments, the control circuit 330 is also electrically connected to the main control chip 400.

[0061] In this embodiment, the control circuit 330 calculates the motion information of the driving mechanism 200 based on the reflected light collected by the photodiode array 320, and sends the motion information to the main control chip 400 of the scroll screen 100, and the main control chip 400 controls the adjustment of the display content on the scroll screen 100.

[0062] In some embodiments, the optical sensor may also include a coherent light source for emitting coherent light; a charge-coupled device (CCD) for collecting reflected light; and a control circuit electrically connected to the coherent light source, the charge-coupled device, and the main control chip for determining motion information.

[0063] In some embodiments, the optical sensor may also include a coherent light source for emitting coherent light; a complementary metal-oxide-semiconductor (CMOS) type light detector for collecting reflected light; and a control circuit electrically connected to the coherent light source, the complementary metal-oxide-semiconductor type light detector, and the main control chip for determining motion information.

[0064] In Figure 4 In the illustrated embodiment, when the driving mechanism 200 is started, the laser emitter (corresponding to the coherent light source 310) and the photodiode array 320 are started simultaneously. The laser emitter emits laser light to the outer surface of the driving mechanism 200, and the driving mechanism 200 emits the reflected light onto the photodiode array 320. The photodiode array 320 collects the reflected light. When the driving mechanism 200 moves to the left, the position of the reflected light on the photodiode array 320 changes. Since the energy of the laser changes during diffuse reflection, the photodiode array 320 can determine the motion state of the driving mechanism 200 based on the change in the position of the reflected light.

[0065] It should be noted that when the driving mechanism 200 is coupled to the flexible screen 120, the moving direction and distance of the reflected light collected by the photodiode array 320 are the same as those of the moving part on the flexible screen 120; when the driving mechanism 200 is coupled to the scroll, the moving direction and distance of the reflected light collected by the photodiode array 320 are the same as those of the scroll, and the moving distance is the same as that of the moving part on the flexible screen 120, but the moving direction is opposite.

[0066] According to the electronic device of the embodiments of the present application, by using the change characteristics of the energy when coherent light undergoes diffuse reflection and the characteristics of the photodiode array for collecting reflected light to detect the motion information of the scroll screen, the sensitivity of detecting the motion information of the flexible screen can be improved.

[0067] In some embodiments, the coherent light emitted by the coherent light source 310 is surface light with a uniform light intensity distribution. The photodiode array 320 is used to output a speckle pattern determined based on the light intensity of the reflected light collected by each photodiode, and the control circuit 330 is used to determine the motion information based on the differences between multiple speckle patterns.

[0068] In this embodiment, the coherent light emitted by the coherent light source 310 towards the flexible screen 120 can be a kind of surface light with a uniform light intensity distribution, such as Figure 5 shown, Figure 5 in which the X-axis and Y-axis represent the position of the plane, and the Z-axis represents the light intensity. When the coherent light is a laser, the light intensities of multiple light beams on the incident surface of the laser incident on the flexible screen 120 are the same and uniformly distributed.

[0069] In this embodiment, the speckle pattern is obtained by the photodiode array 320 collecting the reflected light after the coherent light undergoes diffuse reflection; when the incident surface on the flexible screen 120 reflects the coherent light, since the phase changes when the coherent light undergoes diffuse reflection and phenomena of coherence or cancellation occur, the energy of the reflected light will reinforce or cancel each other, resulting in a change in the light intensity of the reflected light and a non-uniform light intensity distribution. When the photodiode array 320 collects the reflected light reflected by the flexible screen 120 at different positions, a speckle pattern generated by the reflected light at the corresponding position can be obtained.

[0070] In this embodiment, the position of the incident surface on the flexible screen changes as the flexible screen expands and contracts, and then the speckle pattern obtained by the photodiode array 320 based on the reflected light also changes.

[0071] In this embodiment, during the expansion and contraction of the flexible screen 120, the photodiode array 320 is used to continuously and rapidly collect the reflected light of the flexible screen 120 to obtain multiple continuous speckle patterns, and the moving direction and moving distance of the flexible screen 120 are determined according to the position change information of the same features in the multiple speckle patterns.

[0072] According to the electronic device of the embodiment of the present application, multiple continuous speckle patterns are obtained by continuously collecting the reflected light when the surface light undergoes diffuse reflection through the photodiode array, and the motion information of the flexible screen is determined according to the displacement conditions of different light beams on the speckle pattern, making the process of detecting the motion information of the flexible screen convenient and efficient.

[0073] In some embodiments, based on the position information of the same features in at least two speckle patterns collected by the photodiode array 320 and the time information corresponding to the at least two speckle patterns, the expansion and contraction direction and the expansion and contraction stroke of the flexible screen 120 are determined.

[0074] In this embodiment, the same feature can be the light intensity of the reflected light in the speckle pattern.

[0075] In this embodiment, at time t1, the coherent light undergoes diffuse reflection on the incident surface of a partial area of the flexible screen 120, and the photodiode array 320 receives the reflected light to obtain speckles. Figure 1 , such as Figure 5 the light intensity values of one or more rows in the three-dimensional light intensity distribution diagram shown change; when the flexible screen 120 stretches or shrinks at time t2, the photodiode array 320 receives the reflected light to obtain speckles Figure 2 , then the positions where the light intensity values of the corresponding one or more rows change change simultaneously. Thus, an association can be established between the position change of the light intensity in the three-dimensional distribution diagram and the change in the motion information of the flexible screen 120.

[0076] In Figure 6 the embodiment shown, when the photodiode array 320 receives the reflected light reflected by the flexible screen 120 at time t1, the corresponding speckles are obtained Figure 1 , and the speckles Figure 1 the light rays in are located in the 6th row of the X-axis at time t1. When the flexible screen 120 moves at time t2, the photodiode array 320 receives the reflected light at time t2 to obtain speckles Figure 2 , and the speckles Figure 2 the light rays in are located in the 5th row of the X-axis at time t2. It can be seen from this that within the time period from t1 to t2, the light rays move one unit length to the left along the X-axis, indicating that the flexible screen 120 moves one unit length along the X-axis direction. Then, the moving direction and moving distance of the flexible screen 120 can be obtained according to the displacement change of the same light rays in the speckle pattern.

[0077] In some embodiments, when the incident surface where the coherent light undergoes diffuse reflection is on different structures, the position change information of the same features in the speckle pattern may be different from the motion information of the flexible screen 120; for example, when the incident surface where the coherent light undergoes diffuse reflection is on the flexible screen 120, the position change information of the same features in the speckle pattern is the same as the motion information of the flexible screen 120, while when the incident surface where the coherent light undergoes diffuse reflection is on the reel, the same features in the speckle pattern have the same moving distance as the flexible screen 120, but the moving direction is opposite.

[0078] According to the electronic device of the embodiment of the present application, the stretching direction and stretching displacement of the flexible screen can be detected only through the position change information of the same light beam in different speckle patterns, improving the detection efficiency of the motion information of the flexible screen.

[0079] In some embodiments, the control circuit 330 includes: a controller 331, electrically connected to the main control chip 400; a driver 332, through which the controller 331 is electrically connected to the coherent light source 310; a digital signal processor 333, electrically connected to the controller 331; and an analog-to-digital converter 334, electrically connected to the digital signal processor 333, electrically connected to the controller 331, and electrically connected to the photodiode array 320.

[0080] In this embodiment, the controller 331 is electrically connected to the main control chip 400. When the motion state of the driving mechanism 200 of the scroll screen changes, the main control chip 400 electrically connected to the driving mechanism 200 sends a control message to the controller 331, and this control message is used to control the operating states of the coherent light source 310 and the photodiode array 320.

[0081] In this embodiment, the driver 332 is electrically connected to the coherent light source 310, and the controller 331 can control the operating state of the coherent light source 310 through the driver 332. For example, when the coherent light source 310 is a laser emitter, the driver 332 is a laser driving device, and the controller 331 can control the laser driving device to emit laser or stop emitting laser.

[0082] In this embodiment, the analog-to-digital converter 334 is used to convert the reflected light collected by the photodiode array 320 into a digital signal, and the digital signal processor 333 is used to analyze and process the digital signal output by the analog-to-digital converter 334 to obtain the motion information of the driving mechanism 200.

[0083] In Figure 7 In the shown embodiment, when the main control chip 400 detects that the driving mechanism 200 starts to move, it sends a control instruction to the controller 331. The controller 331 drives the laser driving device to work, controls the laser emitter to emit laser to the driving mechanism 200, and at the same time controls the photodiode array 320 to turn on to receive the laser reflected by the driving mechanism 200. The photodiode array 320 then converts the reflected light into a digital signal through the analog-to-digital converter 334 and sends it to the digital signal processor 333. The digital signal processor 333 analyzes the digital signal. For example, based on the fact that when coherent light undergoes diffuse reflection, the energy of the light will be partially cancelled or enhanced, and there is a difference from the initial light intensity, the photodiode array 320 can obtain the change characteristics of the driving mechanism 200 according to the obtained change characteristics of the reflected light intensity, and thus obtain information such as the motion direction and distance of the scroll screen 100.

[0084] An electronic device according to an embodiment of the present application is electrically connected to the main control chip of the scroll screen through a driving mechanism, and can turn on the coherent light source and the photodiode array to work while the scroll screen moves, and feed back the movement information of the scroll screen to the main control chip. Detecting the movement information of the scroll screen by using the reflection characteristics of coherent light can reduce interference with the normal operation of other devices of the whole machine.

[0085] In some embodiments, the coherent light source 310 is used to emit coherent light to one of the scroll, the flexible screen 120, and the driving mechanism 200.

[0086] In this embodiment, the coherent light rays emitted by the coherent light source 310 can be incident on the driving mechanism 200, and the incident surface thereof reflects the coherent light to the surface of the photodiode array 320. The coherent light source 310 can be a laser emitter.

[0087] Of course, in other embodiments, the coherent light rays emitted by the coherent light source 310 can also be incident on the opaque side surface of the flexible screen 120, and the incident surface thereof reflects the coherent light to the surface of the photodiode array 320; the coherent light rays emitted by the coherent light source 310 can also be incident on the outer surface of the scroll, and the incident surface thereof reflects the coherent light to the surface of the photodiode array 320.

[0088] In some embodiments, when the laser is emitted onto the driving mechanism 200 coupled to the flexible screen 120, the outer surface of the driving mechanism 200 reflects the coherent light to the surface of the photodiode array 320. When the driving mechanism 200 moves to the left, the change trajectory of the reflected light intensity detected by the photodiode array 320 also moves to the left.

[0089] In some embodiments, when the laser is emitted onto the driving mechanism 200 coupled to the scroll, the outer surface of the driving mechanism 200 reflects the coherent light to the surface of the photodiode array 320. When the driving mechanism 200 moves to the left, the change trajectory of the reflected light intensity detected by the photodiode array 320 moves to the right.

[0090] An electronic device according to an embodiment of the present application can deduce the movement information of the driving mechanism based on the change characteristics of the reflected light on the photodiode array of different object surfaces. In this way, both the incident surface of the coherent light rays is increased to make the setting of triggering diffuse reflection more flexible, and the interference with the normal operation of other devices of the whole machine can be reduced.

[0091] In some embodiments, the photosensor 300 further includes: an optical baffle 350 disposed between the coherent light source 310 and the photodiode array 320; a substrate 340, and the coherent light source 310, the photodiode array 320, and the optical baffle 350 are all mounted on the substrate 340.

[0092] In this embodiment, the optical barrier 350 is used to prevent part of the coherent light emitted by the coherent light source 310 from directly irradiating the photodiode array 320, which may cause errors when the photodiode array 320 collects the reflected light.

[0093] In some embodiments, the coherent light source 310, the photodiode array 320, and the optical barrier 350 can be movably mounted on the outer surface of the substrate 340 or fixedly mounted on the outer surface of the substrate 340.

[0094] In some embodiments, the control circuit 330 of the photoelectric sensor 300 can be mounted on both sides of the substrate 340 with the coherent light source 310, the photodiode array 320, and the optical barrier 350, or can be mounted on the same side; the stacking of each component in the photoelectric sensor can be customized according to user needs.

[0095] In some embodiments, the coherent light source 310, the photodiode array 320, the optical barrier 350, the substrate 340, and the control circuit 330 can jointly form the photoelectric sensor 300. This sensor is fixed on the scroll screen 100 device. When the driving mechanism 200 of the scroll screen 100 moves, the photodiode array 320 can determine the motion information of the driving mechanism 200 according to the change characteristics of the reflected light of the coherent light on the driving mechanism 200. The motion information includes the distance and direction of the motion of the driving mechanism 200, etc.

[0096] According to the electronic device of the embodiment of the present application, by setting an optical barrier in the photoelectric sensor, it is possible to prevent part of the coherent light from directly irradiating the photodiode array, which may cause errors when it collects the reflected light, and the other devices of the optical sensor are carried by the substrate. The structure of this photoelectric sensor is simple, and the stacking method of each component in the photoelectric sensor is relatively flexible, improving the practicability of the photoelectric sensor.

[0097] The embodiment of the present application provides a control method for an electronic device. The execution subject of the control method of the electronic device can be an electronic device or a functional module or functional entity in the electronic device that can implement the control method of the electronic device. The electronic devices mentioned in the embodiment of the present application include but are not limited to mobile phones, tablet computers, etc. Here, taking the electronic device as the execution subject as an example, the control method for the electronic device provided by the embodiment of the present application will be described.

[0098] As Figure 8 shown, the control method of the electronic device includes: step 810 and step 820.

[0099] Step 810: When the signal collected by the photoelectric sensor changes, determine the motion information of the flexible screen;

[0100] In this step, the signal collected by the optoelectronic sensor 300 can be the reflected light when coherent light undergoes diffuse reflection on the flexible screen 120, or it can be the motion signal of the flexible screen 120 collected by other sensors.

[0101] In this step, the motion information of the flexible screen 120 can be the moving distance and direction of the flexible screen 120.

[0102] In this embodiment, the coherent light is generated by a coherent light source 310. The coherent light can be a laser, etc., and the coherent light source 310 can be a laser emitter.

[0103] In this embodiment, the coherent light source 310 can emit coherent light to the driving mechanism 200 of the flexible screen 120 and reflect the coherent light into a photosensitive device. The photosensitive device obtains the motion information of the driving mechanism 200 according to the change characteristics of the coherent light when the driving mechanism 200 moves, and then determines the motion information of the flexible screen 120.

[0104] In this embodiment, the photosensitive device can be a photodiode (PD), a charge-coupled device (CCD), or a complementary metal oxide semiconductor (CMOS) type photodetector. The photosensitive device can also be a photodiode array 320 composed of multiple photodiodes, etc.

[0105] In this embodiment, when the coherent light undergoes diffuse reflection on the outer surface of the driving mechanism 200, the reflected coherent lights will reinforce or cancel each other. Then, the reflected coherent light is collected by the photodiode array 320, and the motion change of the driving mechanism 200 can be calculated according to the light intensity changes received by the photodiodes at different positions on the photodiode array 320.

[0106] In this embodiment, the driving mechanism 200 is coupled to the flexible screen 120 and is used to adjust the expansion and contraction of the flexible screen 120. The driving mode of the driving mechanism 200 can be motor driving, pneumatic driving, or hydraulic driving, etc.

[0107] The optoelectronic sensor 300 is used to collect the motion information of the flexible screen 120. The motion information collected by the optoelectronic sensor 300 can be the displacement information of the expansion or contraction of the flexible screen 120, including the distance and direction of the motion of the flexible screen 120. For example, if the flexible screen 120 moves outward by a certain distance, it can indicate that the area of the flexible screen 120 relatively increases; if the flexible screen 120 moves inward by a certain distance, it can indicate that the area of the flexible screen 120 relatively decreases.

[0108] In this embodiment, the photoelectric sensor 300 can calculate the displacement of the flexible screen 120 according to the energy change of the pixels on the flexible screen 120, or calculate the displacement of the flexible screen 120 by using the reflection situation of a fixed light source on the light-blocking area of the flexible screen 120. For example, the photoelectric sensor 300 is fixed in a certain area of the flexible screen 120 and emits coherent light to the moving mechanism of the flexible screen 120. The moving mechanism reflects the coherent light onto the photosensitive device of the photoelectric sensor 300. When the driving mechanism 200 moves, the position where the scroll screen 100 reflects the laser will change accordingly. Then, the photosensitive device can determine the motion information of the scroll screen 100 according to the energy change of the reflected light.

[0109] In this embodiment, when the driving mechanism 200 starts to move, the laser emitter emits laser to the driving mechanism 200, and at the same time, the photodiode array 320 is turned on to receive the laser reflected by the driving mechanism 200. The photodiode array 320 then determines the motion information of the flexible screen 120 according to the change characteristics of the reflected light intensity. For example, when coherent light undergoes diffuse reflection, part of the light energy will be offset or enhanced, resulting in a difference from the initial light intensity. The photodiode array 320 can obtain the motion characteristics of the driving mechanism 200 according to the obtained change characteristics of the reflected light intensity, and thus obtain information such as the motion direction and distance of the flexible screen 120.

[0110] Step 820: Based on the motion information, control the driving mechanism and adjust the display information of the flexible screen.

[0111] In this step, the display information of the flexible screen 120 is all the content on the display interface of the flexible screen 120, and this content can be video, pictures or text; the motion information of the flexible screen 120 can be the moving distance and direction of the flexible screen 120.

[0112] In this embodiment, the driving mechanism 200 can be electrically connected to the photoelectric sensor 300. After the optical sensor obtains the motion information of the driving mechanism 200, it sends the motion information to the main control chip 400 electrically connected to the optical sensor, and the main control chip 400 controls the adjustment of the display content on the scroll screen 100.

[0113] In this embodiment, the way of electrical connection can be wired connection. For example, electrical connection is achieved between each electrical device through cables; the way of electrical connection can also be wireless connection. For example, electrical connection is performed between each electrical device through a wireless network or Bluetooth, etc.

[0114] In this embodiment, the photoelectric sensor 300 can obtain motion information based on the reflected light of the driving mechanism 200, and send the motion information to the main control chip 400 to adjust the display content on the flexible screen 120; the photoelectric sensor 300 can also emit coherent light according to the control instruction sent by the main control chip 400, and collect the reflected light of the coherent light on the driving mechanism 200 to determine the motion state of the driving mechanism 200.

[0115] In this embodiment, based on the motion information of the flexible screen 120 or the driving mechanism 200 coupled to the flexible screen 120, the photoelectric sensor 300 can adjust the motion state of the driving mechanism 200 according to the motion information. For example, if the main control chip 400 detects that the opening distance of the flexible screen 120 is too large according to the motion information, the main control chip 400 controls the driving mechanism 200 to contract appropriately. Similarly, when it is detected that the flexible screen 120 is overly contracted, the main control chip 400 controls the driving mechanism 200 to extend appropriately.

[0116] In this embodiment, the photoelectric sensor 300 can also adjust the display information of the flexible screen 120 according to the motion information. For example, when the main control chip 400 detects that the difference between the original display size of the flexible screen 120 after expansion and contraction is too large according to the motion information, it is necessary to adapt the display content in the original display area of the flexible screen 120. For example, after the display screen of the scroll screen 100 becomes larger, the sizes of videos, pictures or texts on the display screen can be increased accordingly, or when the sizes of videos, pictures or texts remain unchanged, the display content can be increased appropriately.

[0117] According to the control method of the electronic device in the embodiment of the present application, the motion signal of the flexible screen is collected by the photoelectric sensor to determine the motion direction and motion distance of the flexible screen. The photoelectric sensor has a simple structure and does not affect the normal operation of other devices of the whole machine.

[0118] In some embodiments, the control method further includes: when the signal collected by the photoelectric sensor 300 does not change, controlling the photoelectric sensor 300 to enter the low power consumption mode.

[0119] In this embodiment, when the signal collected by the photoelectric sensor 300 changes, it can calculate the change situation of the flexible screen 120 according to the change characteristics of the signal. For example, when the flexible screen 120 moves, it radiates a certain amount of energy optical signal to the photoelectric sensor 300. After the flexible screen 120 displaces a certain distance relative to the photoelectric sensor 300, the energy of the optical signal received by the photoelectric sensor 300 will change. When the flexible screen 120 remains stationary, the energy of the optical signal received by the photoelectric sensor 300 tends to be stable. Then, the change situation of the motion state of the flexible screen 120 can be determined according to the strength change of the optical signal received by the photoelectric sensor 300.

[0120] In this embodiment, when the flexible screen 120 stops stretching or contracting, the operating state of the photoelectric sensor 300 can be in a low-power mode or turned off.

[0121] In this embodiment, when detecting the stroke of the flexible screen 120, first, the main control chip 400 electrically connected to the photoelectric sensor 300 initializes the photoelectric sensor 300, and the photoelectric sensor 300 continuously monitors and collects whether the optical signal emitted by the flexible screen 120 changes. When the detected speckle pattern does not change, it indicates that the flexible screen 120 is not stretching or contracting, and then the main control chip 400 controls the photoelectric sensor 300 to turn off or make it in a low-power operating mode.

[0122] According to the control method of the electronic device in the embodiment of the present application, by making the photoelectric sensor in a low-power mode when no signal change is detected, and in a working mode when a signal change is detected by the photoelectric sensor, in this way, the working mode of the photoelectric sensor can be automatically adjusted according to the motion state of the flexible screen, reducing the power consumption of the photoelectric sensor and saving resources.

[0123] In some embodiments, the change in the signal collected by the photoelectric sensor 300 includes: the change in the speckle pattern collected by the photodiode array 320 of the photoelectric sensor 300.

[0124] In this embodiment, the signal collected by the photoelectric sensor 300 can be coherent light. Based on the fact that when coherent light undergoes diffuse reflection, the energy of the light will be partially canceled or enhanced, and there is a difference from the initial light intensity. The moving direction and distance of the flexible screen 120 or the driving mechanism 200 coupled to the flexible screen 120 can be obtained according to the characteristics of the light intensity change of the coherent light after diffuse reflection.

[0125] In this embodiment, initially, the coherent light emitted by the coherent light source 310 is surface light, and the light intensity distribution of each point of the surface light is uniform and consistent. The three-dimensional diagram distribution of the initial coherent light intensity is as Figure 5 shown. After the coherent light undergoes diffuse reflection, due to coherent cancellation, the light intensity at some positions of the three-dimensional diagram is enhanced, while the light intensity at some positions is weakened. The three-dimensional diagram distribution of the coherent light intensity after diffuse reflection is as Figure 6 shown. When the photodiode array 320 receives the reflected light reflected by the flexible screen 120 at time t1, the corresponding speckle is obtained Figure 1 , and the light rays in the speckle Figure 1 are located in the 6th row of the X-axis at time t1. When the flexible screen 120 moves at time t2, the photodiode array 320 receives the reflected light at time t2 to obtain the speckle Figure 2 , and the speckle Figure 2The middle light ray is located at the 5th row of the X-axis at time t2. From this, it can be known that: within the time period from t1 to t2, the light ray moves one unit length to the left along the X-axis, indicating that the flexible screen 120 moves one unit length along the X-axis direction. Then, the moving direction and distance of the flexible screen 120 can be obtained according to the displacement change of the same light ray in the speckle pattern.

[0126] In this embodiment, when the photoelectric sensor 300 receives the reflected light on the light-blocking side of the flexible screen 120, it can calculate the corresponding moving direction and distance of the flexible screen 120 according to the moving direction and distance of the speckle pattern formed by the reflected light on the sensor. When the signal collected by the photoelectric sensor 300 changes, the motion state of the flexible screen 120 can be stationary, or the flexible screen 120 and the photoelectric sensor 300 can remain relatively stationary.

[0127] In Figure 9 In the shown embodiment, during the process of detecting the stroke of the flexible screen 120, the main control chip 400 electrically connected to the photoelectric sensor 300 first initializes the photoelectric sensor 300, and the photoelectric sensor 300 continuously monitors whether the speckle pattern of the reflected light collected by the photodiode array 320 changes. When the detected speckle pattern does not change, it indicates that the flexible screen 120 is not stretched or contracted, and then the main control chip 400 controls the photoelectric sensor 300 to be in the low-power working mode; when the detected speckle pattern changes, it indicates that the flexible screen 120 is stretching or contracting, and then the photodiode array 320 on the photoelectric sensor 300 is turned on to continuously collect the reflected light passing through the flexible screen 120 to obtain the moving direction and distance during the movement of the flexible screen 120 and record it in real time. Finally, the motion data (corresponding moving distance and direction) is uploaded to the main control chip 400, and the host corresponding to the main control chip 400 reads the motion data and makes a response to control the motion state of the flexible screen 120 and the display information on the flexible screen 120, etc.

[0128] According to the control method of the electronic device in the embodiment of the present application, coherent light is emitted to the flexible screen through the photoelectric sensor, and the speckle pattern of the coherent light is collected by the photodiode array. The change of the speckle pattern can reflect the information of the flexible screen stretching and contracting in real time, improving the sensitivity of detecting the motion information of the flexible screen.

[0129] In some embodiments, in the case where the signal collected by the photoelectric sensor 300 changes, determining the motion information of the flexible screen 120 includes: controlling the coherent light source 310 to emit surface light with uniform light intensity distribution; obtaining the speckle pattern, which is determined based on the light intensity of the reflected light collected by each photodiode of the photodiode array 320; and determining the motion information based on the difference between multiple speckle patterns.

[0130] In this embodiment, the coherent light emitted by the coherent light source 310 to the flexible screen 120 can be a surface light with a uniform light intensity distribution, such as Figure 5 as shown Figure 5 The X-axis and Y-axis in represent the position of the plane, and the Z-axis represents the light intensity. When the coherent light is a laser, the light intensities of multiple light beams on the incident surface where the laser is incident on the flexible screen 120 are the same and uniformly distributed.

[0131] In this embodiment, the speckle pattern is obtained by the photodiode array 320 collecting the reflected light after the coherent light undergoes diffuse reflection; when the incident surface on the flexible screen 120 reflects the coherent light, since the phase of the coherent light changes during diffuse reflection and interference or cancellation occurs, the energy of the reflected light will be enhanced or cancelled each other, resulting in a change in the light intensity of the reflected light and a non-uniform light intensity distribution. When the photodiode array 320 collects the reflected light reflected by the flexible screen 120 at different positions, a speckle pattern generated by the reflected light at the corresponding position can be obtained.

[0132] In this embodiment, the position of the incident surface on the flexible screen changes as the flexible screen expands and contracts, and then the speckle pattern obtained by the photodiode array 320 based on the reflected light also changes.

[0133] In this embodiment, during the process of the flexible screen 120 expanding and contracting, the photodiode array 320 is used to continuously and rapidly collect the reflected light of the flexible screen 120 to obtain multiple consecutive speckle patterns, and the moving direction and moving distance of the flexible screen 120 are determined according to the position change information of the same features in the multiple speckle patterns.

[0134] According to the control method of the electronic device in the embodiment of the present application, multiple consecutive speckle patterns are obtained by continuously collecting the reflected light when the surface light undergoes diffuse reflection through the photodiode array, and the motion information of the flexible screen is determined according to the displacement conditions of different light beams on the speckle pattern, making the process of detecting the motion information of the flexible screen convenient and efficient.

[0135] In some embodiments, based on the differences between multiple speckle patterns, the motion information is determined, including: determining the expansion and contraction direction and expansion and contraction stroke of the flexible screen based on the position information of the same features in at least two speckle patterns and the time information corresponding to at least two speckle patterns.

[0136] In this embodiment, the same feature can be the light intensity of the reflected light in the speckle pattern.

[0137] In this embodiment, at time t1, the coherent light undergoes diffuse reflection on the incident surface of a partial area of the flexible screen 120, and the photodiode array 320 receives the reflected light to obtain a speckle Figure 1 , such as Figure 5The light intensity values of one or more rows in the shown three-dimensional light intensity distribution map change; when the flexible screen 120 stretches or shrinks at time t2, the photodiode array 320 receives the reflected light to obtain speckles Figure 2 , then the positions where the light intensity values of the corresponding one or more rows change change simultaneously, and thus the correlation between the position change of the light intensity in the three-dimensional distribution map and the change of the motion information of the flexible screen 120 can be established.

[0138] In Figure 6 the shown embodiment, when the photodiode array 320 receives the reflected light reflected by the flexible screen 120 at time t1, the corresponding speckles are obtained Figure 1 , the speckles Figure 1 the light rays in which are located in the 6th row of the X-axis at time t1. When the flexible screen 120 moves at time t2, the photodiode array 320 receives the reflected light at time t2 to obtain speckles Figure 2 , the speckles Figure 2 the light rays in which are located in the 5th row of the X-axis at time t2. From this, it can be known that: within the time period from t1 to t2, the light rays move one unit length to the left along the X-axis, indicating that the flexible screen 120 moves one unit length along the X-axis direction. Then, the moving direction and moving distance of the flexible screen 120 can be obtained according to the displacement change of the same light rays in the speckle pattern.

[0139] In some embodiments, when the incident surface where the coherent light undergoes diffuse reflection is on different structures, the position change information of the same features in the speckle pattern may be different from the motion information of the flexible screen 120; for example, when the incident surface where the coherent light undergoes diffuse reflection is on the flexible screen 120, the position change information of the same features in the speckle pattern is the same as the motion information of the flexible screen 120, while when the incident surface where the coherent light undergoes diffuse reflection is on the reel, the same features in the speckle pattern have the same moving distance as the flexible screen 120, but the moving direction is opposite.

[0140] According to the control method of the electronic device in the embodiments of the present application, the stretching direction and stretching displacement of the flexible screen can be detected only through the position change information of the same light beam in different speckle patterns, improving the detection efficiency of the motion information of the flexible screen.

[0141] The embodiments of the present application also provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the control method embodiment of the above-mentioned electronic device is implemented, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0142] Wherein, the processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disc, etc.

[0143] Another embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement each process of the control method embodiment of the above-mentioned electronic device and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0144] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0145] It should be noted that in this document, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element. In addition, it should be pointed out that the methods and devices in the embodiments of the present application are not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0146] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present application.

[0147] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0148] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electronic device, characterized in that, Comprising: A scroll screen (100), the scroll screen (100) comprising a scroll and a flexible screen (120) wound around the scroll; A drive mechanism (200), the drive mechanism (200) being power-coupled to at least one of the scroll and the flexible screen (120); An optoelectronic sensor (300), the optoelectronic sensor (300) being configured to collect motion information of the flexible screen (120), the motion information including the telescopic direction and the telescopic stroke of the flexible screen (120); A main control chip (400), the main control chip (400) being electrically connected to the optoelectronic sensor (300) and the drive mechanism (200), the main control chip (400) being configured to calculate the screen size of the scroll screen (100) at the current moment according to the motion information of the drive mechanism (200), and then adapt the original display content of the scroll screen (100) according to the current screen size.

2. The electronic device according to claim 1, wherein The optoelectronic sensor (300) comprises: A coherent light source (310), the coherent light source (310) being configured to emit coherent light; An optoelectronic diode array (320), the optoelectronic diode array (320) being configured to collect reflected light; A control circuit (330), the control circuit (330) being electrically connected to the coherent light source (310) and the optoelectronic diode array (320) for determining the motion information.

3. The electronic device according to claim 2, wherein The control circuit (330) comprises: A controller (331); A driver (332), the controller (331) being electrically connected to the coherent light source (310) through the driver (332); A digital signal processor (333), the digital signal processor (333) being electrically connected to the controller (331); An analog-to-digital converter (334), the analog-to-digital converter (334) being electrically connected to the digital signal processor (333), the analog-to-digital converter (334) being electrically connected to the controller (331), and the analog-to-digital converter (334) being electrically connected to the optoelectronic diode array (320).

4. The electronic device according to claim 2, characterized in that, The coherent light source (310) is configured to emit coherent light to one of the scroll, the flexible screen (120) and the drive mechanism (200).

5. The electronic device according to claim 2, characterized in that, The optoelectronic sensor (300) further comprises: An optical barrier (350), the optical barrier (350) being arranged between the coherent light source (310) and the optoelectronic diode array (320); A substrate (340), the coherent light source (310), the optoelectronic diode array (320) and the optical barrier (350) being all mounted on the substrate (340).

6. A control method for an electronic device according to any one of claims 1-5, characterized in that, Comprising: Determining the motion information of the flexible screen in the case where the signal collected by the optoelectronic sensor changes; Controlling the drive mechanism based on the motion information and adjusting the display information of the flexible screen; The controlling the drive mechanism based on the motion information and adjusting the display information of the flexible screen comprises: Calculating the screen size of the scroll screen at the current moment according to the motion information, and then adapting the original display content of the scroll screen according to the current screen size.

7. The control method of the electronic device according to claim 6, wherein, Further comprising: When the signal collected by the photoelectric sensor does not change, control the photoelectric sensor to turn on the low-power mode.

8. The control method of the electronic device according to claim 6, wherein The photoelectric sensor (300) includes: a coherent light source (310) for emitting coherent light; a photodiode array (320) for collecting reflected light; and a control circuit (330) electrically connected to the coherent light source (310) and the photodiode array (320) for determining the motion information. The change in the signal collected by the photoelectric sensor includes: the change in the speckle pattern collected by the photodiode array.

9. The control method of the electronic device according to claim 8, wherein When the signal collected by the photoelectric sensor changes, determining the motion information of the flexible screen includes: Controlling the coherent light source to emit surface light with a uniform light intensity distribution; Obtaining the speckle pattern, which is determined based on the light intensities of the reflected light collected by the respective photodiodes of the photodiode array; Determining the motion information based on the differences between multiple speckle patterns.

10. The control method of the electronic device according to claim 9, wherein The determining the motion information based on the differences between multiple speckle patterns includes: Determining the stretching direction and stretching stroke of the flexible screen based on the position information of the same feature in at least two speckle patterns in each speckle pattern and the time information corresponding to the at least two speckle patterns.

Images