Electronic device

Abstract

The present disclosure relates to the technical field of electronic devices, and in particular to an electronic device, which comprises a camera module, an anti-shake motor assembly, a mainboard and a control module, the anti-shake motor assembly is arranged on the camera module; the control module is arranged on the mainboard, and the control module and the anti-shake motor assembly are electrically connected, the control module is used for determining a driving electric signal according to a motion state of the electronic device, and transmitting the driving electric signal to the anti-shake motor assembly, the driving electric signal is used for driving the anti-shake motor assembly to realize optical anti-shake.

Description

Technical Field

[0001] This disclosure relates to the field of electronic equipment technology, and more specifically, to an electronic device. Background Technology

[0002] With the development and advancement of technology, people have increasingly higher requirements for the image quality of mobile phones and other electronic devices. When electronic devices are imaging, camera shake is one of the factors affecting image quality. To improve image quality, optical image stabilization is necessary in electronic devices. Summary of the Invention

[0003] The purpose of this disclosure is to provide an electronic device that achieves optical image stabilization.

[0004] This disclosure provides a camera assembly, the electronic device comprising:

[0005] Camera module;

[0006] A stabilization motor assembly, wherein the stabilization motor assembly is disposed in the camera module;

[0007] Motherboard;

[0008] A control module is provided on the motherboard and is electrically connected to the image stabilization motor assembly. The control module is used to determine a drive signal according to the motion state of the electronic device and transmit the drive signal to the image stabilization motor assembly. The drive signal is used to drive the image stabilization motor assembly to achieve optical image stabilization.

[0009] The electronic device provided in this disclosure achieves optical image stabilization by driving the camera module with a stabilization motor assembly on the camera module and outputting drive electrical signals through a control module on the motherboard. Furthermore, by placing the control module on the motherboard, the low precision of optical image stabilization control caused by integrating the control module into the camera module is avoided. This allows the electronic device to control optical image stabilization specifically according to its state, improving the accuracy of optical image stabilization. Moreover, separating the control module from the camera module reduces the cost of the camera module, thereby saving costs for the electronic device.

[0010] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0012] Figure 1 A schematic diagram of a first electronic device provided for an exemplary embodiment of this disclosure;

[0013] Figure 2 A schematic diagram of a second electronic device provided as an exemplary embodiment of this disclosure;

[0014] Figure 3 A schematic diagram of a third electronic device provided as an exemplary embodiment of this disclosure;

[0015] Figure 4 A schematic diagram of a fourth electronic device provided as an exemplary embodiment of this disclosure;

[0016] Figure 5 A schematic diagram of a fifth electronic device provided as an exemplary embodiment of this disclosure;

[0017] Figure 6 A schematic diagram of a first type of camera assembly provided for an exemplary embodiment of this disclosure;

[0018] Figure 7 A schematic diagram of a second camera assembly provided as an exemplary embodiment of this disclosure;

[0019] Figure 8 A schematic diagram of a third camera assembly provided as an exemplary embodiment of this disclosure. Detailed Implementation

[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0021] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0022] This disclosure provides an exemplary embodiment of an electronic device, such as... Figure 1 As shown, the electronic device includes: a camera module 110, a stabilization motor assembly 120, a motherboard 130, and a control module 140; the stabilization motor assembly 120 is disposed on the camera module 110; the control module 140 is disposed on the motherboard 130, and the control module 140 and the stabilization motor assembly 120 are electrically connected. The control module 140 is used to determine the drive electrical signal according to the motion state of the electronic device, and transmit the drive electrical signal to the stabilization motor assembly 120. The drive electrical signal is used to drive the stabilization motor assembly 120 to achieve optical image stabilization.

[0023] The electronic device provided in this embodiment achieves optical image stabilization by driving the camera module 110 with a stabilization motor assembly 120 and outputting a drive electrical signal with a control module 140 on the motherboard 130.

[0024] In related technologies, the optical image stabilization control module 140 is integrated into the camera module 110. In this case, the control parameters in the control module 140 are preset and cannot be adjusted on the electronic device, leading to low image stabilization accuracy in some application scenarios (e.g., motor resonance or magnetic interference). In this embodiment, the control module 140 is located on the motherboard 130, avoiding the low optical image stabilization control accuracy problem caused by integrating the control module 140 into the camera module 110. This allows the electronic device to control optical image stabilization specifically according to its state, improving the accuracy of optical image stabilization. Furthermore, separating the control module 140 from the camera module 110 reduces the cost of the camera module 110, thereby saving on the cost of the electronic device.

[0025] Furthermore, such as Figure 2As shown, the electronic device provided in this embodiment may further include a detection module 150 and a motion sensor module 160. The detection module 150 is connected to the camera module 110 and is used to detect the position of the camera module 110. The detection module 150 is also electrically connected to the control module 140 to feed back the position of the camera module 110 to the control module 140. The motion sensor module 160 is connected to the control module 140 and is used to detect the motion state of the electronic device and transmit the motion state information of the electronic device to the control module 140.

[0026] The various parts of the electronic device provided in the embodiments of this disclosure will now be described in detail:

[0027] The electronic devices provided in this disclosure can be mobile phones, tablets, e-readers, smartwatches, smart glasses, cameras, or camcorders, etc. The following detailed description uses a mobile phone as an example.

[0028] like Figure 3 As shown, the electronic device may further include a display screen 210, a frame 220, a back cover 230, and a battery 240. The display screen 210 and the back cover 230 are respectively disposed on both sides of the frame 220 and connected to the frame 220. The display screen 210, the frame 220, and the back cover 230 form the main structure of the electronic device, and there is a receiving cavity within the main structure. The motherboard 130 and the battery 240 are disposed within the receiving cavity.

[0029] The camera module 110 can be a front-facing camera or a rear-facing camera for an electronic device. When the camera module 110 is a front-facing camera, a hole can be cut into the display screen 210, and the camera module 110 is housed within the hole in the display screen 210. Alternatively, the electronic device can be an under-display camera device, in which case the camera module 110 is located on the back of the display screen 210. When the camera module 110 is a rear-facing camera, a lens 112 hole is provided on the back cover 230, and the camera module 110 can be mounted in the lens 112 hole. A lens 112 decorative plate can be used to cover the lens 112 hole.

[0030] Camera module 110 is used to capture images, such as taking photos or recording videos. Figure 6 As shown, the camera module 110 may include a lens 112 and a sensor 111. The lens 112 is used to collect ambient light, and the sensor 111 receives the light transmitted by the lens 112 module and converts the light signal into an electrical signal.

[0031] In this embodiment, the camera module 110 can be a linear camera module 110 or a periscope camera module 110. In the linear camera module, the sensor 111 is located on the light-emitting side of the lens 112, and the optical axis of the lens 112 is perpendicular to the photosensitive surface of the sensor 111. In the periscope camera module 110, a reflector can be disposed between the sensor 111 and the lens 112 to change the direction of the light transmitted by the lens 112 module. For example, the reflector can be at a 45-degree angle to the optical axis of the lens 112, deflecting the light transmitted by the lens 112 by 90 degrees, and the sensor 111 is disposed on the transmission path of the deflected light.

[0032] Lens 112 may include one or more optical lenses. When lens 112 includes multiple optical lenses, the multiple optical lenses are arranged sequentially along the optical axis of lens 112. The optical lenses are transparent lenses, and the lens material can be transparent materials such as glass or plastic. The multiple optical lenses can be made of the same material or different materials. For example, some of the multiple optical lenses may be plastic lenses and some may be glass lenses. The multiple optical lenses may include concave lenses, convex lenses, spherical lenses, or aspherical lenses, etc.

[0033] Lens 112 may also include a lens barrel with a mounting hole, and one or more optical lenses disposed in the mounting hole. For example, the lens barrel may be cylindrical with a cylindrical mounting hole, and the optical lens may be circular. The optical lens is mounted in the mounting hole and can be fixedly connected to the lens barrel; or the optical lens may be movably connected to the lens barrel.

[0034] Sensor 111 is an image sensor, which can be a CCD sensor or a CMOS sensor. Sensor 111 includes an array of photodiodes, an output circuit layer, and a substrate. The photodiodes and the output circuit are connected and encapsulated within the substrate. The photodiodes are used to convert optical signals into electrical signals, and the output circuit is used to output the electrical signals.

[0035] An image stabilization motor assembly 120 is disposed in the camera module 110. The image stabilization motor assembly 120 is used to drive the camera module 110 to rotate to achieve optical image stabilization. The image stabilization motor assembly 120 can be connected to the lens 112, driving the lens 112 to rotate to achieve optical image stabilization. Alternatively, the image stabilization motor assembly 120 can be connected to both the lens 112 and the sensor 111, driving both the lens 112 and the sensor 111 to achieve optical image stabilization.

[0036] The control module 140 is located on the motherboard 130 and is electrically connected to the anti-shake motor assembly 120. The control module 140 is used to determine the drive signal according to the motion state of the electronic device and transmit the drive signal to the anti-shake motor assembly 120. The drive signal is used to drive the anti-shake motor assembly 120 to achieve optical image stabilization.

[0037] The control module 140 is connected to the motherboard 130 and can be shared with control devices in electronic devices. For example, the control module 140 can be a central processing unit or microprocessor in an electronic device.

[0038] The control module 140 is connected to the motion sensor 111, and receives motion state information (e.g., acceleration and / or velocity information of the electronic device) collected by the motion sensor 111. The control module 140 determines the position information of the electronic device based on its acceleration, and determines the required rotation angle for optical image stabilization of the lens 112 based on the position information. The required rotation angle for optical image stabilization of the lens 112 module can be decomposed into a rotation angle about a first direction and a rotation angle about a second direction. The first and second directions are perpendicular, and both are perpendicular to the optical axis of the lens 112.

[0039] like Figure 4 As shown, the control module 140 may include a stabilization determination unit 141 and a servo control unit 142. The stabilization determination unit 141 is used to determine the target angular displacement of the stabilization motor in the stabilization motor assembly 120 according to the motion state of the electronic device. The servo control unit 142 is connected to the stabilization determination unit 141, the detection module 150 and the stabilization motor assembly 120 respectively. The servo control unit 142 is used to control the stabilization motor according to the target angular displacement and the position of the camera module 110.

[0040] The image stabilization determination unit 141 can acquire acceleration information of the electronic device from the motion sensor module 160 and integrate the acceleration of the electronic device to determine the position change of the electronic device. During optical image stabilization, the movement of the camera module 110 is opposite to the movement of the electronic device, thus canceling out the shake of the electronic device. Therefore, the control module 140 can calculate and determine the target position of the camera assembly based on the position of the electronic device. Then, based on the target position of the camera assembly and the parameters of the image stabilization motor assembly 120, it determines the drive electrical signal to be provided to the image stabilization motor assembly 120.

[0041] For example, the image stabilization determination unit 141 can invoke an optical image stabilization algorithm to calculate the optical image stabilization position. The image stabilization determination unit 141 can perform high-pass filtering and integration on the acceleration signal of the electronic device to obtain the position of the electronic device, and convert the position into a drive signal for the image stabilization motor assembly.

[0042] The servo control unit 142 is used for closed-loop feedback control of the image stabilization motor assembly 120. The servo control unit 142 can be a PID (Proportional Integral Differential) control unit. The servo control unit 142 can be connected to the detection module 150, which is used to detect the position of the camera module 110 in real time during image stabilization and transmit the position of the camera module 110 to the servo control unit 142. The servo control unit 142 performs closed-loop feedback control of the image stabilization motor assembly 120 based on the target position and the actual position of the camera module 110.

[0043] In this embodiment of the disclosure, the control module 140 is also used to detect whether the anti-shake motor assembly 120 resonates. When the anti-shake motor assembly 120 resonates, the control module 140 provides a resonance compensation signal to the anti-shake motor.

[0044] The control module 140 can detect the vibration frequency of the anti-shake motor assembly 120 and determine whether the vibration frequency of the anti-shake motor assembly 120 is close to its natural frequency. When the vibration frequency of the anti-shake motor assembly 120 is close to its natural frequency, it provides a resonance compensation signal to the anti-shake motor assembly 120 to avoid resonance of the anti-shake motor assembly 120.

[0045] For example, the control module 140 may also include a resonance compensation unit. The resonance compensation unit detects the vibration frequency of the anti-shake motor assembly 120 and determines whether the vibration frequency of the anti-shake motor assembly 120 is close to its natural frequency. When the vibration frequency of the anti-shake motor assembly 120 is close to its natural frequency, it provides a resonance compensation signal to the anti-shake motor assembly 120 to prevent the anti-shake motor assembly 120 from resonating.

[0046] The motion sensor module 160 is connected to the control module 140. The motion sensor module 160 is used to detect the motion state of the electronic device and transmit the motion state information of the electronic device to the control module 140. The motion sensor module 160 may include a gyroscope sensor 111 or a six-axis accelerometer sensor 111, etc.

[0047] like Figure 5As shown, the image stabilization motor assembly 120 may include a first driver 121 and a second driver 123. The first driver 121 is connected to the lens 112 module and is used to drive the lens 112 module to rotate around a first direction. The second driver 123 is connected to the lens 112 module and is used to drive the lens 112 module to rotate around a second direction. The first direction and the second direction are perpendicular.

[0048] The first driver 121 and the second driver 123 can be voice coil motors or SMA motors, etc. The first driver 121 and the second driver 123 can be independent motors. Alternatively, the first driver 121 and the second driver 123 can be the same motor, with the first driver 121 being the driving part of the motor in the first direction and the second driver 123 being the driving part of the motor in the second direction.

[0049] Furthermore, the image stabilization motor assembly 120 may also include a first drive chip unit 122 and a second drive chip unit 124. The first drive chip unit 122 is provided with a first drive circuit, which is electrically connected to the control module 140 and the first driver 121 respectively. The drive circuit is used to transmit drive electrical signals to the first driver 121. The second drive chip unit 124 is provided with a second drive circuit, which is electrically connected to the control module 140 and the second driver 123 respectively. The drive circuit is used to transmit drive electrical signals to the second driver 123.

[0050] The first driving chip unit 122 and the second driving chip unit 124 can be two independent driving chips. Of course, in practical applications, the first driving chip unit 122 and the second driving chip unit 124 can also be the same driving chip, with the first driving circuit and the second driving circuit located on the same chip. This disclosure does not specifically limit this.

[0051] In this embodiment, the control module 140 is located on the motherboard 130 of the electronic device, and the image stabilization motor assembly 120 is located on the camera module 110. The image stabilization motor assembly 120 and the control module 140 are electrically connected. The image stabilization motor assembly 120 and the control module 140 can be connected via an I2C bus. The I2C bus can be located on a flexible circuit board that extends from the motherboard 130 to the camera module 110. For example, the control module 140 can be connected to a first driving circuit and a second driving circuit via I2C.

[0052] In one feasible embodiment of this disclosure, such as Figure 6As shown, the image stabilization motor assembly 120 can be disposed on the sensor 111. The image stabilization motor assembly 120 may include a first motor 201. The first motor 201 is connected to the sensor 111 and is used to drive the sensor 111 to achieve optical image stabilization of the sensor 111. The first motor 201 can drive the sensor 111 to rotate; for example, the first motor 201 can drive the sensor 111 to move according to the movement of the electronic device.

[0053] For example, the first motor 201 can drive the sensor 111 to rotate around the X-axis and Y-axis. The light-receiving direction of the sensor 111 can be the Z-axis direction, with the X-axis and Y-axis perpendicular to each other, and the X-axis and Y-axis being perpendicular to the Z-axis respectively.

[0054] The first motor 201 can be an SMA (shape memory alloy, SMA) motor. The first motor 201 includes a motor body and a first drive unit. The first drive unit is connected to the motor body and to the back of the sensor 111. The motor body may include a base, the base itself, and the first drive unit. In use, the base can be fixed to the electronic device. The first drive unit may include multiple SMA wires connected to the base. When energized, the SMA wires retract, thereby driving the sensor 111 to rotate.

[0055] For example, the first driving unit may include four SMA lines. The sensor 111 has a cuboid structure, with an SMA line on each side of the sensor 111. During optical image stabilization, electrical signals can be provided to the corresponding SMA lines according to the vibration of the electronic device, driving the sensor 111 to rotate.

[0056] The sensor 111 has four SMA lines: a first SMA line, a second SMA line, a third SMA line, and a fourth SMA line. These four lines are sequentially positioned on the four sides of the sensor 111. The first and third SMA lines drive the sensor 111 to rotate around the X-axis, while the second and fourth SMA lines drive the sensor 111 to rotate around the Y-axis.

[0057] Of course, in practical applications, the first motor 201 can also be a voice coil motor (VCM) or other motor that works through electromagnetic effects, and the embodiments disclosed herein are not limited thereto.

[0058] The first motor 201 is connected to the sensor 111 and is used to drive the sensor 111 to achieve optical image stabilization of the sensor 111. The first motor 201 can drive the sensor 111 to rotate; for example, the first motor 201 can drive the sensor 111 to move according to the movement of the electronic device.

[0059] For example, the first motor 201 can drive the sensor 111 to rotate around the X-axis and Y-axis. The light-receiving direction of the sensor 111 can be the Z-axis direction, with the X-axis and Y-axis perpendicular to each other, and the X-axis and Y-axis being perpendicular to the Z-axis respectively.

[0060] In another feasible embodiment of this disclosure, such as Figure 7 As shown, the image stabilization motor assembly 120 can be disposed on the lens 112. The image stabilization motor assembly 120 may include a second motor 202. The second motor 202 is connected to the lens 112 and is used to drive the lens 112 to rotate, so as to achieve optical image stabilization of the lens 112.

[0061] For example, the second motor 202 can be an SMA (shape memory alloy, SMA) motor. The second motor 202 includes a second motor 202 body and a second drive unit. The second drive unit is connected to the second motor 202 body and to the lens 112. The second motor 202 body may include a base, a base, and a second drive unit. In use, the base can be fixed to the electronic device. The second drive unit may include multiple SMA wires connected to the base. When energized, the SMA wires retract, thereby driving the sensor 111 to rotate.

[0062] The second motor 202 may have a through hole, and the lens 112 is disposed within this through hole. A second drive unit connects the second motor 202 and the lens 112. The first drive unit may include multiple SMA cables, which are arranged circumferentially within the through hole on the motor body and connected to the outer wall of the lens 112. During optical image stabilization, electrical signals can be provided to the corresponding SMA cables based on the vibration of the electronic device, driving the sensor 111 to rotate.

[0063] The four SMA lines include a first SMA line, a second SMA line, a third SMA line, and a fourth SMA line, which are sequentially located at the through holes on the first motor 201 body. The first and third SMA lines are used to drive the sensor 111 to rotate around the X-axis, and the second and fourth SMA lines are used to drive the sensor 111 to rotate around the Y-axis.

[0064] Of course, in practical applications, the second motor 202 can also be a voice coil motor (VCM) or other motor that operates through electromagnetic effects, and the embodiments disclosed herein are not limited thereto. For example, the second motor 202 can be a ball motor, driven by magnets, coils, and balls.

[0065] In another possible implementation of the embodiments of this disclosure, such as Figure 8As shown, the image stabilization motor assembly 120 can be connected to the sensor 111 and the lens 112 respectively. The image stabilization motor assembly 120 may include a first motor 201 and a second motor 202. The first motor 201 is connected to the sensor 111; the second motor 202 is connected to the lens 112; the control module 140 is connected to the first motor 201 and the second motor 202 respectively. The control module 140 is used to control the first motor 201 to drive the sensor 111 and to control the second motor 202 to drive the lens 112, so as to achieve optical image stabilization of the imaging assembly.

[0066] The first motor 201 is connected to the sensor 111 and drives the sensor 111 to achieve optical image stabilization. The first motor 201 can drive the sensor 111 to rotate; for example, the first motor 201 can drive the sensor 111 to move according to the movement of the electronic device.

[0067] For example, the first motor 201 can drive the sensor 111 to rotate around the X-axis and Y-axis. The light-receiving direction of the sensor 111 can be the Z-axis direction, with the X-axis and Y-axis perpendicular to each other, and the X-axis and Y-axis being perpendicular to the Z-axis respectively.

[0068] The first motor 201 can be an SMA motor. The first motor 201 includes a motor body and a first drive unit. The first drive unit is connected to the motor body and to the back of the sensor 111. The motor body may include a base, the base itself, and the first drive unit. In use, the base can be fixed to the electronic device. The first drive unit may include multiple SMA wires connected to the base. When energized, the SMA wires retract, thereby driving the sensor 111 to rotate.

[0069] For example, the first driving unit may include four SMA lines. The sensor 111 has a cuboid structure, with an SMA line on each side of the sensor 111. During optical image stabilization, electrical signals can be provided to the corresponding SMA lines according to the vibration of the electronic device, driving the sensor 111 to rotate.

[0070] The sensor 111 has four SMA lines: a first SMA line, a second SMA line, a third SMA line, and a fourth SMA line. These four lines are sequentially positioned on the four sides of the sensor 111. The first and third SMA lines drive the sensor 111 to rotate around the X-axis, while the second and fourth SMA lines drive the sensor 111 to rotate around the Y-axis.

[0071] Of course, in practical applications, the first motor 201 can also be a voice coil motor (VCM) or other motor that works through electromagnetic effects, and the embodiments disclosed herein are not limited thereto.

[0072] The first motor 201 is connected to the sensor 111 and is used to drive the sensor 111 to achieve optical image stabilization of the sensor 111. The first motor 201 can drive the sensor 111 to rotate; for example, the first motor 201 can drive the sensor 111 to move according to the movement of the electronic device.

[0073] For example, the first motor 201 can drive the sensor 111 to rotate around the X-axis and Y-axis. The light-receiving direction of the sensor 111 can be the Z-axis direction, with the X-axis and Y-axis perpendicular to each other, and the X-axis and Y-axis being perpendicular to the Z-axis respectively.

[0074] The second motor 202 can be an SMA (shape memory alloy) motor. The second motor 202 includes a second motor 202 body and a second drive unit. The second drive unit is connected to the second motor 202 body and to the lens 112. The second motor 202 body may include a base, a base, and a second drive unit. In use, the base can be fixed to the electronic device. The second drive unit may include multiple SMA wires connected to the base. When energized, the SMA wires retract, thereby driving the sensor 111 to rotate.

[0075] For example, the second motor 202 may have a through hole, and the lens 112 is disposed within this through hole. A second drive unit connects the second motor 202 and the lens 112. The first drive unit may include multiple SMA cables, which are arranged circumferentially within the through hole on the motor body and connected to the outer wall of the lens 112. During optical image stabilization, electrical signals can be provided to the corresponding SMA cables based on the vibration of the electronic device, driving the sensor 111 to rotate.

[0076] The four SMA lines include a first SMA line, a second SMA line, a third SMA line, and a fourth SMA line, which are sequentially located at the through holes on the first motor 201 body. The first and third SMA lines are used to drive the sensor 111 to rotate around the X-axis, and the second and fourth SMA lines are used to drive the sensor 111 to rotate around the Y-axis.

[0077] Of course, in practical applications, the second motor 202 can also be a voice coil motor (VCM) or other motor that operates through electromagnetic effects, and the embodiments disclosed herein are not limited thereto. For example, the second motor 202 can be a ball motor, driven by magnets, coils, and balls.

[0078] The control module 140 is connected to the first motor 201 and the second motor 202 respectively. The control module 140 is used to control the first motor 201 to drive the sensor 111 and to control the second motor 202 to drive the lens 112, so as to achieve optical image stabilization of the imaging component.

[0079] The control module 140 is used to determine the first rotation angle and the second rotation angle based on the rated stroke of the first motor 201, the rated stroke of the second motor 202 and the anti-shake angle, and to control the first motor 201 to drive the sensor 111 to rotate by the first rotation angle, and to control the second motor 202 to drive the lens 112 to rotate by the second rotation angle. The anti-shake angle is the total rotation angle required for the camera module 110 to achieve optical image stabilization, as determined by the control module 140 based on the motion sensor module 160 of the electronic device.

[0080] For example, the control module 140 can divide the first rotation angle and the second rotation angle according to the ratio of the rated stroke of the first motor 201 and the rated stroke of the second motor 202. That is, the ratio of the rated stroke of the first motor 201 and the rated stroke of the second motor 202 is the same as the ratio of the first rotation angle and the second rotation angle. For example, if the rated stroke of the first motor 201 is 400 micrometers and the rated stroke of the second motor 202 is 200 micrometers, then the allocation ratio is 400:200 = 2:1. When the electronic device experiences a 3-degree vibration, the first motor 201 drives the sensor 111 to rotate 2 degrees, and the second motor 202 drives the lens 112 to rotate 1 degree.

[0081] Alternatively, the control module 140 can prioritize allocating the stabilization angle to the first motor 201 based on the rated stroke of the first motor 201 and the rated stroke of the second motor 202. When the stabilization angle is less than or equal to the rated stroke of the first motor 201, the sensor 111 is driven by the first motor 201 for stabilization. When the stabilization angle is greater than the rated stroke of the first motor 201, the excess stroke is allocated to the second motor 202. Optical image stabilization is achieved by driving the sensor 111 by the first motor 201 and driving the lens 112 by the second motor 202.

[0082] Alternatively, the control module 140 can prioritize allocating the stabilization angle to the second motor 202 based on the rated stroke of the first motor 201 and the rated stroke of the second motor 202. When the stabilization angle is less than or equal to the rated stroke of the second motor 202, the lens 112 is driven by the second motor 202 for stabilization. When the stabilization angle is greater than the rated stroke of the second motor 202, the excess stroke is allocated to the first motor 201, and the sensor 111 is driven by the first motor 201 and the lens 112 is driven by the second motor 202 to achieve optical image stabilization.

[0083] In this embodiment of the disclosure, in order to improve the accuracy of optical image stabilization, compensation for the stabilization accuracy can be achieved through the coordinated control of the first motor 201 and the second motor 202. In a feasible implementation, the control module 140 corrects the second rotation angle based on the first actual angle and the first rotation angle detected by the detection module 150, and drives the second motor 202 to rotate the corrected second rotation angle.

[0084] The correction and compensation of the second rotation angle by using the first actual angle can be achieved in the following way:

[0085] H SST2 =H SST1 +k×(H LS1 –H LST1 )

[0086] Among them, H SST2 H is the corrected second rotation angle. SST1 H is the initial second rotation angle. LS1 From the first practical perspective, H LST1 Let k be the initial first rotation angle and k be the compensation coefficient. The initial first rotation angle is the first rotation angle determined by the control module 140, and the initial second rotation angle is the second rotation angle determined by the micro-control module 140. During drive, the lens 112 moves with the corrected second rotation angle. The k value is calibrated based on the optimal image stabilization effect and used as the linkage compensation coefficient. That is, the k value can be obtained through testing and calibration, stored in the electronic device, and called during compensation.

[0087] It should be noted that in this embodiment, the first motor 201 and the second motor 202 can operate simultaneously. At the start of operation, the control module 140 controls the first motor 201 according to a first rotation angle, and the control module 140 controls the second motor 202 according to a second rotation angle. After the first motor 201 drives the sensor 111, the first actual rotation angle of the sensor 111 is obtained. A corrected second rotation angle is determined based on the first actual angle, and then the second motor 202 is controlled to adjust the rotation angle of the lens 112 based on the corrected second rotation angle.

[0088] It is understood that in this embodiment, the first motor 201 may operate first, and the second motor 202 may operate after the first motor 201 finishes driving the sensor 111. Before the second motor 202 operates, a corrected second rotation angle is determined based on the first actual angle and the initial second rotation angle. The second motor 202 drives the lens 112 according to the corrected second rotation angle.

[0089] In another feasible implementation, the control module 140 corrects the first rotation angle based on the second actual angle and the second rotation angle detected by the detection module 150, and drives the first motor 201 to rotate the corrected first rotation angle.

[0090] The correction and compensation of the first rotation angle by the second actual angle can be achieved in the following way:

[0091] H SST1 =H SST2 +k×(H LS2 –H LST2 )

[0092] Among them, H SST1 H is the corrected first rotation angle. SST2 H is the initial second rotation angle. LS2 For the second actual angle, H LST2 Let k be the initial second rotation angle and k be the compensation coefficient. The initial second rotation angle is the second rotation angle determined by the control module 140, and the initial first rotation angle is the first rotation angle determined by the control module 140. During driving, the sensor 111 moves at the corrected first rotation angle. The k value is calibrated based on the optimal anti-shake effect and used as the linkage compensation coefficient. That is, the k value can be obtained through testing and calibration, stored in the electronic device, and called during compensation.

[0093] It should be noted that in this embodiment, the first motor 201 and the second motor 202 can operate simultaneously. At the start of operation, the control module 140 controls the first motor 201 according to a first rotation angle, and the control module 140 controls the second motor 202 according to a second rotation angle. After the second motor 202 drives the lens 112, the second actual angle of rotation of the lens 112 group is obtained. A corrected first rotation angle is determined based on the second actual angle, and then the first motor 201 is controlled to adjust the rotation angle of the sensor 111 based on the corrected first rotation angle.

[0094] It is understandable that, in this embodiment, the second motor 202 may operate first, and the first motor 201 may operate after the second motor 202 finishes driving the lens 112. Before the first motor 201 operates, a corrected first rotation angle is determined based on the second actual angle and the initial first rotation angle. The first motor 201 drives the sensor 111 according to the corrected first rotation angle.

[0095] The detection module 150 may include a Hall sensor 151 and an amplifier circuit 152. The Hall sensor 151 is located in the camera module 110 and is used to collect the position information of the camera module 110. The amplifier circuit 152 is connected to the Hall sensor 151 and the control module 140 respectively. The amplifier circuit is used to amplify the signal collected by the Hall sensor 151 and transmit it to the control module 140.

[0096] When the image stabilization motor assembly 120 includes a first driver 121 and a second driver 123, the detection module 150 may include a first detection unit 501 and a second detection unit 502. The first detection unit 501 is disposed on the camera module 110 and is used to detect the angle of rotation of the camera module 110 around a first direction. The second detection unit 502 is disposed on the camera module 110 and is used to detect the angle of rotation of the camera module 110 around a second direction.

[0097] The first detection unit 501 may include a first Hall sensor and a first amplification circuit. The first Hall sensor is located in the camera module 110 and is used to collect position information of the camera module 110 in a first direction. The first amplification circuit is connected to the first Hall sensor and the control module 140 respectively. The first amplification circuit is used to amplify the signal collected by the first Hall sensor and transmit it to the control module 140.

[0098] The second detection unit 502 may include a second Hall sensor and a second amplification circuit. The second Hall sensor is located in the camera module 110 and is used to collect position information of the camera module 110 in a second direction. The second amplification circuit is connected to the second Hall sensor and the control module 140 respectively. The second amplification circuit is used to amplify the signal collected by the second Hall sensor and transmit it to the control module 140.

[0099] When a first motor 201 is provided on sensor 111 and a second motor 202 is provided on lens 112, a set of sensing modules can be provided on sensor 111 and lens 112 respectively. For example, a first detection unit 501 and a second detection unit 502 are provided on sensor 111 to detect the position of sensor 111 in a first direction and a second direction respectively. Similarly, a first detection unit 501 and a second detection unit 502 are provided on lens 112 to detect the position of lens 112 in a first direction and a second direction respectively.

[0100] The amplifier circuit 152 may include an amplifier, an analog-to-digital converter (ADC) and a digital-to-analog converter (DAC). The input terminal of the amplifier is connected to the Hall sensor 151. The ADC is connected to the output terminal of the amplifier and connected to the servo control unit 142. The DAC can be connected to the control terminal of the amplifier.

[0101] In this embodiment of the disclosure, when the control module 140 controls the first driver 121 and the second driver 123, it can obtain the positions of the first driver 121 and the second driver 123 respectively through the detection module 150. Therefore, in closed-loop control, the linkage control of the first driver 121 and the second driver 123 can be realized, avoiding the problem of poor control accuracy caused by factors such as magnetic interference when the first driver 121 and the second driver 123 are driven alone.

[0102] For example, the control module 140 obtains the actual angle of rotation of the camera module 110 along the first direction from the first detection unit 501, and compensates for the rotation angle of the camera module 110 around the second direction based on the actual angle of rotation of the camera module 110 along the first direction.

[0103] Alternatively, the control module 140 obtains the actual angle of rotation of the camera module 110 along the second direction from the second detection unit 502, and compensates for the rotation angle of the camera module 110 around the first direction based on the actual angle of rotation of the camera module 110 along the second direction.

[0104] The electronic device provided in this disclosure achieves optical image stabilization by driving the camera module 110 with a stabilization motor assembly 120 on the camera module 110 and outputting drive electrical signals with a control module 140 on the motherboard 130. Furthermore, by placing the control module 140 on the motherboard 130, the low optical image stabilization control accuracy problem caused by integrating the control module 140 into the camera module 110 is avoided. This allows the electronic device to control optical image stabilization specifically according to its state, improving the accuracy of optical image stabilization. Moreover, separating the control module 140 from the camera module 110 reduces the cost of the camera module 110, thereby saving costs for the electronic device. It also avoids the problem of decreased image stabilization accuracy caused by resonance or magnetic interference, further improving the accuracy of optical image stabilization in the electronic device.

[0105] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. An electronic device, characterized in that, The electronic device includes: Camera module; A stabilization motor assembly, wherein the stabilization motor assembly is disposed in the camera module; Motherboard; A control module is located on the motherboard and is electrically connected to the image stabilization motor assembly. The control module is used to determine a drive signal according to the motion state of the electronic device and transmit the drive signal to the image stabilization motor assembly. The drive signal is used to drive the image stabilization motor assembly to achieve optical image stabilization. A detection module is connected to the camera module and is used to detect the position of the camera module. The detection module is also electrically connected to the control module to feed back the position of the camera module to the control module. The anti-shake motor assembly includes: A first driver, connected to the camera module, is used to drive the camera module to rotate around a first direction; A second driver, connected to the camera module, is used to drive the camera module to rotate around a second direction, wherein the first direction and the second direction are perpendicular; The detection module includes: A first detection unit is disposed in the camera module, and the first detection unit is used to detect the angle of rotation of the camera module around the first direction; A second detection unit is disposed in the camera module, and the second detection unit is used to detect the angle of rotation of the camera module around the second direction; The control module is connected to the first detection unit and the second detection unit respectively; The control module obtains the actual angle of rotation of the camera module along the first direction from the first detection unit, and compensates for the rotation angle of the camera module around the second direction based on the actual angle of rotation of the camera module along the first direction. Alternatively, the control module obtains the actual angle of rotation of the camera module along the second direction from the second detection unit, and compensates for the rotation angle of the camera module around the first direction based on the actual angle of rotation of the camera module along the second direction.

2. The electronic device as claimed in claim 1, characterized in that, The detection module includes: A Hall sensor, which is installed in the camera module, is used to collect the position information of the camera module; An amplifier circuit is provided, which is connected to the Hall sensor and the control module respectively. The amplifier circuit is used to amplify the signal collected by the Hall sensor and transmit it to the control module.

3. The electronic device as claimed in claim 1, characterized in that, The control module includes: The anti-shake determination unit is used to determine the target angular displacement of the anti-shake motor in the anti-shake motor assembly based on the motion state of the electronic device. A servo control unit is connected to the image stabilization determination unit, the detection module, and the image stabilization motor assembly. The servo control unit is used to control the image stabilization motor according to the target angular displacement and the position of the camera module.

4. The electronic device as claimed in claim 1, characterized in that, The anti-shake motor assembly also includes: A first driving chip unit is provided with a first driving circuit. The first driving circuit is electrically connected to the control module and the first driver respectively. The driving circuit is used to transmit the driving electrical signal to the first driver. The second driver chip unit has a second driver circuit on it. The second driver circuit is electrically connected to the control module and the second driver respectively. The driver circuit is used to transmit the drive electrical signal to the second driver.

5. The electronic device as claimed in claim 1, characterized in that, The control module also includes: The resonance compensation unit and the image stabilization motor assembly are provided. The resonance compensation unit is used to detect whether the image stabilization motor assembly resonates, and when the image stabilization motor assembly resonates, it provides a resonance compensation signal to the image stabilization motor assembly.

6. The electronic device as described in any one of claims 1-5, characterized in that, The electronic device also includes: A motion sensor module is connected to the control module. The motion sensor module is used to detect the motion state of the electronic device and transmit the motion state information of the electronic device to the control module.

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