Image pickup apparatus and control method thereof

Abstract

The invention discloses an image pickup apparatus and a control method thereof. The camera device comprises an adapter ring; one side of the adapter ring is used for physical butt joint with the camera, the other side of the adapter ring is used for physical butt joint with the lens, and communication connection is established between the adapter ring and the camera; and the adapter ring is also in communication connection with a driving part coupled to the lens, so that the adapter ring drives the driving part to operate to adjust lens parameters after receiving a native control instruction of the camera. In the technical scheme of the invention, after receiving the native control instruction sent by the camera, the adapter ring can convert the native control instruction into the control variable quantity of the driving piece, and the driving piece works to realize the electric control adjustment of lens parameters such as aperture, focusing and zooming, so that the problem that a pure mechanical lens or a cross-system lens camera cannot be directly controlled is solved, and the control accuracy of the camera is improved. According to the technical scheme, the algorithm advantages of the camera can be reasonably utilized, the automation degree and effect of shooting are improved, and the lens parameters are adjusted more quickly and accurately.

Description

Technical Field

[0001] This application relates to the field of photography and videography technology, and in particular to a camera device and its control method. Background Technology

[0002] In existing technologies, the aperture, focus, and zoom control of a camera lens typically relies on the lens's internal native motor and communication protocols. For example, the core of a camera's native autofocus system is that the camera body directly controls the lens's aperture, focus, and zoom using the focus points on the image sensor and built-in algorithms.

[0003] However, this native autofocus system relies on the lens supporting the corresponding mount's electronic communication protocol and possessing a responsive built-in motor. If the lens used is a purely mechanical lens or a cross-system manual lens, lacking an electronic control interface or incompatible with the camera mount protocol, the camera body cannot directly control its aperture, focus, and zoom adjustments, rendering the native autofocus function ineffective. In such cases, external rangefinders (such as follow focus devices or laser rangefinders) or manual operation are required to achieve focusing and zooming. Such operations are not only inefficient and inaccurate but also fail to effectively utilize the camera's built-in algorithms.

[0004] Therefore, it is necessary to improve the existing camera equipment. Summary of the Invention

[0005] This application provides a camera device and its control method, aiming to solve the problem in the prior art that the camera's native focusing system cannot be used to achieve lens autofocus, zoom and aperture control.

[0006] To achieve the above objectives, this application proposes a camera device. The camera device includes an adapter ring; One side of the adapter ring is used for physical docking with the camera, and the other side is used for physical docking with the lens. The adapter ring establishes a communication connection with the camera. The adapter ring also establishes a communication connection with a drive unit coupled to the lens, so that the adapter ring receives the camera's native control commands and drives the drive unit to operate in order to adjust the lens parameters.

[0007] In some embodiments, a communication contact is provided at the end of the adapter ring near the camera, and the adapter ring establishes contact communication with the camera through the communication contact; and... The adapter ring is also provided with a communication interface, through which the adapter ring forms a wired communication with the driving component.

[0008] In some embodiments, the adapter ring is provided with multiple function buttons and a display screen, so that the corresponding information can be displayed on the display screen by operating the function buttons.

[0009] In some embodiments, the adapter ring is provided with a wireless communication module, and the adapter ring is connected to an external mobile terminal through the wireless communication module.

[0010] In some embodiments, the adapter ring is further provided with an expansion interface, through which the adapter ring establishes wired communication with an external operating component, including a handle, a handwheel, and a foot switch.

[0011] In some embodiments, the driving element is a drive motor, and the number of drive motors is set to multiple, which are connected in series, and the multiple drive motors are used to adjust their respective lens parameters.

[0012] In some embodiments, the drive motor includes a drive motor, a drive wheel, and a feedback unit; the drive wheel is connected to the drive motor to adjust the lens parameters under the drive of the drive motor. The feedback unit is configured corresponding to the drive motor and is used to detect the rotation information of the drive motor and feed the rotation information back to the adapter ring.

[0013] In some embodiments, the drive motor further includes a steering toggle switch for adjusting the rotation direction of the drive motor.

[0014] In some embodiments, the drive motor further includes a character indicator light and a character switching button, so that the character indicator light can be switched by operating the character switching button.

[0015] In some embodiments, the drive motor further includes an antenna module for wireless communication with an external mobile terminal.

[0016] This application also provides a method for controlling a camera device, the method comprising: The adapter ring receives the native control commands from the camera and converts the changes in the camera's control over the native lens into changes in the adapter ring's control over the drive components. The adapter ring drives the drive unit to operate based on the converted control changes, adjusting the lens parameters of the lens coupled to the drive unit.

[0017] In some embodiments, the adapter ring receives native control commands from the camera, and converts the camera's control changes on the native lens into control changes by the adapter ring on the drive unit, including: In response to the communication connection between the adapter ring and the drive unit, the adapter ring acquires and stores the boundary stroke of the drive unit's operation; The adapter ring creates a virtual camera boundary value and reports it to the camera. Based on the boundary travel of the drive unit operation and the reported virtual camera boundary values, a mapping relationship is established between the control changes of the camera on the native lens and the control changes of the adapter ring on the drive unit.

[0018] In some embodiments, the process of the adapter ring acquiring and storing the boundary stroke of the drive unit's operation in response to the communication connection between the adapter ring and the drive unit includes: The current position count value of the feedback unit set in the driver is cleared to zero and recorded as the starting reference point; Control the drive component to move in the first direction until it reaches the physical limit, and record the position count value at this time as the minimum boundary position for the adjustment of the drive component; Control the drive component to move in a second direction opposite to the first direction until it reaches another physical limit, and record the position count value at this time as the maximum boundary position of the drive component adjustment; The boundary travel of the drive unit is obtained and stored by the count difference between the minimum and maximum boundary positions.

[0019] In some embodiments, the adapter ring illuminating and reporting virtual camera boundary values ​​to the camera includes: The adapter ring obtains the actual adjustment range of the camera on the native lens; Based on the actual adjustment range, construct virtual camera boundary values ​​that map to the actual adjustment range of the camera, and report the virtual camera boundary values ​​to the camera.

[0020] In some embodiments, the mapping relationship between the control change of the camera on the native lens and the control change of the adapter ring on the drive element is expressed as follows: Mapping relationship between camera and driver: MotorTarget = Mmin + (CamTarget - Cmin) * (Mmax ​​- Mmin) / (Cmax -Cmin); Mapping relationship between driver components and camera: CamTarget = Cmin + (MotorTarget - Mmin) * (Cmax - Cmin) / (Mmax ​​-Mmin); Where Mmin is the minimum boundary of the actuator; Mmax is the maximum boundary of the actuator; Cmin is the minimum boundary of the camera; Cmax is the maximum boundary of the camera; CamTarget is the target position emitted by the camera; and MotorTarget is the mapped target position of the actuator.

[0021] In some embodiments, before the adapter ring receives the native control command from the camera and converts the camera's control change on the native lens into the adapter ring's control change on the drive unit, the following steps are included: The adapter ring establishes a connection with the camera; Based on the connection between the adapter ring and the camera, the adapter ring and the camera exchange information.

[0022] In some embodiments, establishing a connection between the adapter ring and the camera includes: The adapter ring receives power from the camera; In response to the connection with the camera, the adapter ring queries the system for the driver roles present to obtain the corresponding device information.

[0023] In some embodiments, the information interaction between the adapter ring and the camera based on the connection between the adapter ring and the camera includes: In response to the camera's inquiry about supported protocol versions, the adapter ring establishes a communication connection with the camera that is compatible with the protocol version. Based on the communication connection, the adapter loop provides feedback to the camera regarding the status of the buttons and multi-function rings of the simulated native lens; and... In response to the camera's query for the lens connected to the adapter ring, the adapter ring parses the lens library stored inside into lens information that the camera can recognize, and returns the parsed lens information to the camera.

[0024] In some embodiments, the adapter ring also receives a drive signal generated by the user operating an external actuator; the drive signal controls the amount of change in the actuator to drive the actuator to operate, thereby adjusting the lens parameters. In this system, the user controls the operation of the drive components by operating the drive signals generated by the external operating components and the native control commands issued by the camera, using a preset control strategy.

[0025] In some embodiments, the process of the user controlling the operation of the drive device by operating the drive signal generated by the external operating device and the native control command issued by the camera in accordance with the preset control strategy further includes: The adapter ring synchronously acquires the position / status information of the drive components and transmits the position / status information to the camera.

[0026] This application proposes a camera device and its control method. The camera device includes an adapter ring; one side of the adapter ring is used for physical docking with a camera, and the other side is used for physical docking with a lens, with a communication connection established between the adapter ring and the camera; the adapter ring also establishes a communication connection with a drive component coupled to the lens, so that the adapter ring receives native control commands from the camera and drives the drive component to adjust lens parameters. In this application, after receiving the native control commands from the camera, the adapter ring can convert these commands into control changes for the drive component. The drive component then performs electronic adjustments to lens parameters such as aperture, focus, and zoom, overcoming the problem that purely mechanical lenses or cross-system lenses cannot be directly controlled by the camera. Simultaneously, it can rationally utilize the camera's algorithmic advantages to improve the automation and effect of shooting, and adjust lens parameters more quickly and accurately. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the camera device according to an embodiment of this application; Figure 2 for Figure 1 Schematic diagram of the intermediate junction ring; Figure 3 for Figure 1 A schematic diagram of the structure of the drive motor; Figure 4 This is a schematic diagram illustrating the working principle of the camera device in the embodiments of this application; Figure 5 This is a schematic diagram of the connection status of the camera device in an embodiment of this application; Figure 6 This is a schematic flowchart of the control method for the camera device in an embodiment of this application. Figure 1 ; Figure 7 This is a schematic flowchart of the control method for the camera device in an embodiment of this application. Figure 2 ; Figure 8 This is a schematic flowchart of the control method for the camera device in an embodiment of this application. Figure 3 ; Figure 9 This is a schematic diagram of the communication process in the camera device according to an embodiment of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] It should be noted that, unless otherwise stated or limited, all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] It should also be noted that, unless otherwise stated or limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be an intervening element present. When an element is referred to as "connected to" another element, it may be directly connected to the other element or there may be an intervening element present.

[0031] Furthermore, unless otherwise stated or limited, the descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0032] See Figure 1 As shown, this application proposes a camera device. The camera device includes an adapter ring 30; one side of the adapter ring 30 is used for physical docking with a camera 10, and the other side is used for physical docking with a lens 20, and a communication connection is established between the adapter ring 30 and the camera 10; and the adapter ring 30 also establishes a communication connection with a drive unit 40 coupled to the lens 20, so that the adapter ring 30, after receiving native control commands from the camera 10, drives the drive unit 40 to operate to adjust the lens parameters.

[0033] In the technical solution of this application, after receiving the native control command issued by the camera 10, the adapter ring 30 can convert the native control command into a control change quantity for the drive unit 40. The drive unit 40 then performs electronic control adjustment of lens parameters such as aperture, focus, and zoom, overcoming the problem that the camera 10 cannot directly control purely mechanical lenses or cross-system lenses.

[0034] Understandably, camera 10 can generate adjustment control commands for lens parameters such as aperture, focus, and zoom based on its own algorithms. For example, camera 10 can generate corresponding native control commands using autofocus algorithms and exposure algorithms based on factors such as the shooting scene and lighting conditions. After receiving and converting these native control commands, adapter ring 30 can generate control changes for drive component 40, thereby achieving precise control of lens parameters. By making reasonable use of the algorithmic advantages of camera 10 itself, the automation level and effect of shooting are improved, instead of simply relying on external ranging devices or manual operation. This allows for faster and more accurate adjustment of lens parameters, improving operational efficiency and precision.

[0035] Typically, to accommodate adjustments to lens parameters, multiple gear rings are installed on the lens 20. Each gear ring can adjust different lens parameters by rotation. For example, the lens 20 may include gear drive rings such as an aperture ring, a focus ring, and a zoom ring. The aperture ring adjusts the lens aperture size, the focus ring adjusts the lens focus, and the zoom ring changes the lens focal length. The drive components 40 correspond to the aperture drive component, the focus motor drive component, and the zoom drive component, respectively, to achieve one-to-one drive control of each gear ring. The drive components 40 may also include extended drive components for adjusting the rotation of the support.

[0036] In this application's technical solution, the lens 20 includes commercially available "Cine lenses" (with native geared interfaces), as well as ordinary manual or AF lenses that, after being fitted with a gear ring, can also achieve the functional requirements of this application. These three types are the main ones: Cine lenses (cine lenses / cinema lenses): These have standard 0.8mm Mod gear mounts on the focus ring, aperture ring, and zoom ring, facilitating drive by the focus motor or mechanical focuser. Examples include the Zeiss CP.3, Canon CN-E series, and Cooke S7 / i.

[0037] Modified camera lens with gear ring: A regular camera lens (Still Lens) does not have gears, but a gear ring (Lens Gear / Follow Focus Gear Ring) can be added, allowing it to be driven by the drive unit 40. Essentially, it is an electronic camera lens, and it can only be controlled by the drive unit 40 after the gear ring is added.

[0038] Fully manual camera lens (Vintage / MF Lens): There are no gears, but because it is a purely manual structure, it can be controlled by a gear ring or a friction-driven drive unit 40.

[0039] The Camera 10 is a device with its own native autofocus system. The camera body, relying on the focus points on the image sensor and built-in algorithms, can directly control the aperture, focus, and zoom of the native lens. Most existing Camera 10 devices on the market have native autofocus capabilities, which can directly drive the electromagnetic aperture and linear motor of the native lens to achieve high-speed and precise focus and exposure control.

[0040] Specifically, the adapter ring 30 in this application can simulate the communication of a camera mount lens, causing the camera 10 to mistakenly believe that the adapter ring 30 is the native lens of the camera 10. After receiving the aperture, focus, zoom and other control commands sent by the camera 10, the adapter ring 30 further converts them into control signals for the drive unit 40, and then controls the aperture drive unit, focus drive unit, zoom drive unit and extension drive unit to operate, thereby realizing the electronic control of non-native lenses and giving full play to the advantages of the modern camera 10 automatic control system.

[0041] See Figure 2 As shown, optionally, the adapter ring 30 and lens 20, as well as the adapter ring 30 and camera 10, both use a bayonet connection, making the operation simple and quick. Users can easily assemble and disassemble the adapter ring 30 with the lens 20 and camera 10 without any tools. Specifically, one side of the adapter ring 30 is designed to fully adapt to the bayonet specifications of the camera 10, ensuring a stable and reliable connection; while the other side of the adapter ring 30 is specially designed with a standardized bayonet interface 306, perfectly matching the installation requirements of various lenses 20. To further enhance the user experience, a professional sealing component 303, such as a high-quality waterproof rubber ring, can be added to the interface. This not only significantly improves the sealing performance of the entire connection, but also effectively prevents the intrusion of external dust and moisture, thereby better protecting the delicate electronic components and optical components inside the camera 10 and extending the service life of the device.

[0042] Optionally, the adapter ring 30 has a communication contact 302 at the end near the camera 10, through which the adapter ring 30 establishes contact communication with the camera 10. This contact communication connection is stable and reliable, ensuring high-speed and accurate data transmission. The adapter ring 30 also has a communication interface, through which it establishes wired communication with the drive unit 40. For example, a first communication interface 304 is provided on the adapter ring, and a second communication interface 42 is provided on the drive unit 40. The first communication interface 304 and the second communication interface 42 are connected by a communication line 301. The adapter ring 30 contains a microprocessor (not shown in the attached diagram), which acts as the main control module to preprocess, analyze, and coordinate various received data, achieving more accurate and efficient lens control.

[0043] Understandably, the camera 10 has its own power supply. After the adapter ring 30 establishes a connection with the camera 10 through the communication contact 302, it can synchronously receive power from the camera 10. Alternatively, in another embodiment, the adapter ring 30 can have a built-in independent power supply or be powered by an external power supply. When an external power supply is provided, the adapter ring 30 has multiple first communication interfaces 304 to connect the external power supply and the driver 40 respectively.

[0044] Optionally, the adapter ring 30 is also equipped with a wireless communication module 312, through which the adapter ring 30 connects to an external mobile terminal. Users can remotely issue control commands via the mobile terminal, thereby further expanding the operational flexibility and convenience of the device.

[0045] The mobile terminal can be a mobile phone, tablet computer, etc., and the wireless communication between the adapter ring 30 and the mobile terminal can be Bluetooth, Wi-Fi or NFC to achieve wireless interconnection with the adapter ring 30.

[0046] Optionally, the adapter ring 30 is also equipped with an expansion interface (not shown in the attached diagram). The adapter ring 30 establishes wired communication with external operating components through the expansion interface. These external operating components include handles, handwheels, and foot switches. Control commands are issued by operating these wired connectors to control the parameter adjustment of the lens 20. Furthermore, the solution proposed in this application, in addition to automated control via the camera 10's own system, can also achieve precise manual adjustment by combining external operating components (handles, handwheels, foot switches, and mobile terminals), meeting the precise control requirements for focus, depth of field, and motion trajectory in film and television shooting. When handles, handwheels, and mobile terminals are provided, their working principle is as follows: Figure 4 As shown, Figure 4 In Chinese, "app" refers to a mobile terminal.

[0047] Furthermore, an upgrade interface 305 can be set on the adapter ring 30 to support firmware updates, thereby adapting to more lenses or expanding functions.

[0048] Optional, such as Figure 2 As shown, the adapter ring 30 is provided with an installation indicator mark 309 and an installation confirmation mark 307 corresponding to the installation between the lens 20 and the adapter ring 30 and the camera 10.

[0049] The installation indicator 309 provides clear operational guidance to the user. This indicator may include a tightening direction mark and a loosening direction mark. The tightening direction mark uses a prominent arrow to indicate the tightening direction at the bayonet joint where the adapter ring 30 connects to the lens 20 and camera 10. For example, a green arrow pointing clockwise clearly indicates that the lens 20 or adapter ring 30 needs to be rotated clockwise to tighten the installation. In addition to the arrow, concise text such as "tighten clockwise" can be added to further enhance the indication and ensure the user accurately understands the operational requirements. The loosening direction mark can also use an arrow and text, using a different color or text than the tightening direction arrow for easy identification and operation. The adapter ring 30 may also be fitted with a handle 308 to accommodate its installation on the camera 10, allowing the user to apply force during installation and improving operational convenience and stability.

[0050] Furthermore, the installation confirmation mark 307 can be a light display mark, a scale alignment mark, or a pattern alignment mark, etc. For example, a specific pattern, such as a triangle or a circle, can be designed on the bayonet area. During installation, the user needs to adjust the angle of the lens 20 or the adapter ring 30 to ensure that the patterns on both sides are completely aligned, thereby confirming that the installation is correct.

[0051] Optionally, the adapter ring 30 also integrates multiple function buttons 310 and a display screen 311. The function buttons 310 are arranged in an ergonomic layout for easy user location and operation. By pressing different function buttons 310, users can easily trigger corresponding commands, while the corresponding display screen 311 will display the current operation status and related information in real time.

[0052] The display screen 311 utilizes high-resolution LCD technology, clearly displaying various information including parameter settings, function status prompts, and operation result feedback. This enables two-way interaction between the user and the device. When the user performs an operation, the system immediately provides visual feedback through the display screen 311, allowing the user to intuitively grasp the operation's progress and the device's operating status, greatly improving the immediacy and ease of operation of human-computer interaction. Furthermore, the display screen 311 supports multi-level menu display, allowing users to access deeper settings options through combinations of function keys 310, further enhancing the device's operability and functionality.

[0053] Optionally, the adapter ring 30 also features a mounting base 313 on its side wall specifically for connecting external support components. This mounting base 313 is made of high-strength metal with a non-slip surface, enabling a stable connection to various common external support devices, including but not limited to tripods, monopods, and ball heads. Once reliably connected to the external support, the mounting base 313 provides strong and stable support for the entire photography system (including the camera body 10, lens 20, and other accessories). This design effectively absorbs and disperses various vibrations generated during shooting, significantly reducing image blur caused by hand shake or environmental factors. It also maintains absolute stability of the equipment during long exposures or shooting at special angles, ensuring that photographers obtain clear, sharp, and detailed high-quality images. Furthermore, the rational layout of the mounting base 313 fully considers ergonomic principles, providing optimal support without hindering normal operation.

[0054] Optional, such as Figure 1 and Figure 3 As shown, the driving component 40 is a drive motor, including an aperture motor 401, a focus motor 402, a zoom motor 403, and an extension motor 404, etc., and the multiple drive motors are connected in series, which can significantly reduce the number of cables. Each drive motor includes a drive motor 43, a drive wheel 44, and a feedback unit (not shown in the attached figure).

[0055] The drive motor also includes a housing 41 and a control unit (not shown in the attached diagram) disposed within the housing 41. This control unit is electrically connected to the drive motor 43 and is used to receive external commands and regulate the speed and direction of the drive motor 43, thereby precisely driving the drive wheel 44. A feedback unit is integrated within the housing 41 and positioned corresponding to the drive motor 43. It is used to detect the rotation information of the drive motor 43 and feed this information back to the adapter ring 30. Real-time acquisition of key parameters such as the position and motion state of the drive motor 43 ensures closed-loop control of the motion process, improving response accuracy and system reliability.

[0056] Specifically, the drive motor 43 includes a brushless DC motor and a radial magnet mounted on it (not shown in the attached diagram), and the drive wheel 44 includes a gear set formed by multiple meshing gears (not shown in the attached diagram). After receiving the control command from the adapter ring 30, the control unit controls the brushless DC motor to operate through FOC (field orientation control). The brushless DC motor drives the gear set with multiple meshing gears to operate, achieving smooth torque transmission and precise speed adjustment. At the same time, the radial magnet on the motor transmits the motor angle position and other information to the feedback unit. The feedback unit sends the feedback back to the adapter ring 30 through the IIF signal, and the adapter ring 30 sends the feedback back to the camera 10. This forms a closed-loop control link to ensure the accuracy and stability of the operation.

[0057] Optionally, the driver 40 in this application can also be powered by a built-in independent power supply or by an external power supply 50, such as... Figure 1 As shown. When setting an external power supply 50, a power supply interface can be set on the housing 41 to connect to the external power supply; or multiple second communication interfaces 42 can be directly set to realize the serial connection between multiple driving components 40 and connect to the external power supply 50 respectively.

[0058] Optionally, each drive unit 40 also includes a role indicator light 46 and a role switching button 45. The role indicator light 46 is switched by operating the role switching button 45. The role switching button 45 allows for quick switching of the functions of different drive units 40, such as focusing, aperture, or zoom modes. Combined with the role indicator light 46 displaying the current operating status, this enables the user to correctly assemble and quickly identify the corresponding functions of each motor. Understandably, when switching to different functional modes, it can receive instructions from the adapter ring 30 and automatically match the corresponding control parameters to ensure accurate response of focusing, aperture, or zoom actions. Furthermore, each drive unit 40 also includes a motor rotation toggle switch 48, which the user can manually toggle to switch the forward and reverse rotation of the drive motor 43.

[0059] Optionally, the driver 40 also includes an antenna module 47 for wireless communication with an external mobile terminal, the antenna module 47 being connected to the control unit. The terminal establishes a connection with the driver 40 via Bluetooth or Wi-Fi to achieve remote control and parameter adjustment. Users can monitor the operating status of the driver 40 in real time, adjust the control mode, or upgrade the firmware through a dedicated application, improving operational flexibility and system maintainability.

[0060] Furthermore, antenna modules 47 can also be built into wired connectors such as handles and handwheels to connect to mobile terminals for wireless upgrades. A diagram illustrating the connection status between the components is shown below. Figure 5 As shown, Figure 5 The term "mobile app" refers to a mobile terminal.

[0061] Optional, such as Figure 3 As shown, the drive component 40 also includes a locking structure 49, which includes a pipe clamp 491 and a hand-twist lock 492. The pipe clamp 491 is located at the end of the drive component 40 away from the drive wheel 44, and the hand-twist lock 492 passes through the pipe clamp 491 and is threadedly connected to it. The drive component 40 is connected to the housing 41. By tightening the hand-twist lock 492, the pipe clamp 491 is locked onto the bracket, achieving quick installation and stable positioning of the drive component 40. The locking structure 49 supports multi-angle adjustment and disassembly, facilitating flexible deployment in different shooting scenarios. The pipe clamp 491 has an anti-slip washer on its inner side to enhance the reliability of the fixation.

[0062] This application also provides a control method for a camera device, which is based on the camera device described above. (See reference...) Figure 6 As shown, the control method includes: In step S10, the adapter ring receives the native control command from the camera and converts the camera's control change on the native lens into the adapter ring's control change on the drive unit.

[0063] In this step, the camera is a device with a built-in autofocus system (Native Autofocus) as described above. During actual use, the image sensor (such as CMOS) captures image data in real time and analyzes brightness, contrast, and color information through the pixel array. It then uses phase detection autofocus (PDAF) or contrast detection autofocus (CDAF) technology to determine the areas in the image that need to be sharp (such as human eyes or object edges). The built-in algorithm (such as AE / AF / AWB) then calculates parameters such as aperture (F-number), focus distance, and zoom ratio based on the metering value (EV), focal length, and shooting mode (such as portrait or landscape). The calculation results are then converted into control commands to achieve precise adjustment of lens parameters, including aperture, focus, and zoom parameters. Because these control commands are native, they can directly drive the lens's internal focusing or zoom mechanism. However, if the lens itself does not have an electronic control interface or is incompatible with the camera mount protocol, the native control commands cannot directly affect lens parameter adjustment. In this case, the adapter ring needs to receive the native control commands and convert them into control commands that the driver can recognize.

[0064] In this step, the adapter ring uses a built-in microprocessor to convert the camera's native control commands into universal control signals for the drive components. That is, the adapter ring analyzes the changes in aperture, focus, and zoom parameters in the native control commands and generates corresponding drive signals (drive component control signals). Based on the above photographic equipment structure design, each drive component (drive motor) precisely rotates the corresponding gear ring according to the received signal, realizing external coordinated control of lens parameters.

[0065] Specifically, see Figure 7 As shown, step S10 further includes: In step S101, in response to the communication connection between the adapter ring and the drive unit, the adapter ring acquires and stores the boundary stroke of the drive unit's operation.

[0066] Boundary travel refers to the physical limit position that the drive component can reach when rotating the gear ring, including the starting point and the ending point. By pre-calibrating the maximum movable range of each drive component and storing it in the non-volatile memory of the adapter ring, it is ensured that mechanical damage or control inaccuracy will not occur due to overtravel during subsequent adjustments. The specific method for obtaining the boundary travel of the drive component is as follows: The current position count value of the feedback unit set in the drive component is cleared to zero and recorded as the starting reference point; the drive component is controlled to move in the first direction until it reaches the physical limit, and the position count value at this time is recorded as the minimum boundary position of the drive component adjustment; the drive component is controlled to move in the second direction opposite to the first direction until it reaches another physical limit, and the position count value at this time is recorded as the maximum boundary position of the drive component adjustment; the boundary travel of the drive component is obtained by the count difference between the minimum boundary position and the maximum boundary position and stored. The specific method for obtaining the boundary travel of the drive component is presented using an incremental encoder as an example of the feedback unit: During the system initialization phase, the control unit in the drive component drives it to move slowly in a certain direction at low speed and low current, while simultaneously reading the output pulses of the incremental encoder in real time. This includes: 1. Initialize the count The control unit in the drive unit resets the current position count value of the incremental encoder to zero, using it as the starting reference point.

[0067] 2. Unidirectional scanning The driving component begins to move in the first direction at a constant speed.

[0068] During the motion, the processor continuously collects encoder pulse values ​​and compares them with the values ​​from the previous moment.

[0069] 3. Stopping conditions When it is detected that the encoder pulses no longer change for a continuous period of time (i.e., the drive shaft has stopped rotating), it is considered that the drive has reached the mechanical limit in that direction.

[0070] The control unit records the encoder's cumulative value at this time as the minimum boundary position.

[0071] 4. Reverse Scan The control unit drives the drive unit to move slowly in a second opposite direction to the first direction, while continuing to monitor the change in the encoder pulse count.

[0072] When the encoder value remains unchanged again, it is determined that the drive has reached the mechanical limit at the other end.

[0073] The control unit records the encoder's cumulative value at this time as the maximum boundary position.

[0074] 5. Calculation of travel range The effective travel range of the drive unit is obtained by the encoder count difference between the minimum and maximum boundary positions.

[0075] This range is stored in the adapter ring processor, and subsequent drive control commands are all limited to this travel range.

[0076] Specifically, assume the lens focusing ring's full travel corresponds to approximately 30,000 PLS (incremental encoder pulses). During initialization, the drive unit corresponding to this focusing ring starts at the 10,000 PLS position of the lens, and this point is recorded as 0. The drive unit moves in the positive direction until it reaches the lens's physical limit (approximately 30,000 PLS), at which point the encoder's accumulated value no longer changes, and is recorded as +20,000. Subsequently, when it moves in the reverse direction to the other physical limit, the encoder's accumulated value again remains unchanged, and is recorded as -10,000. The resulting effective travel range is -10,000 … +20,000 PLS (total travel 30,000 PLS). This range is stored as the drive unit's motion boundary for subsequent closed-loop control and safety constraints, and is saved and used as the drive unit's boundary value in communication with the adapter loop.

[0077] In step S102, the adapter ring simulates and reports the virtual camera boundary values ​​to the camera.

[0078] In this step, the adapter ring creates a "virtual intermediate layer" between the camera and the drive by simulating a set of fixed camera boundary values ​​(e.g., minimum = 1000, maximum = 2000).

[0079] For the camera: The adapter ring masquerades as the camera's own coordinate system, reporting fixed boundary values ​​(e.g., 1000~2000). The camera doesn't need to know the actual coordinate range of the actuator; it only needs to send the target position (e.g., "focus to 1500") within its familiar virtual range. For the actuator: The adapter ring maps the camera's virtual coordinates (1000~2000) to the actuator's actual encoder coordinates (e.g., 0~2000) and executes motion control. The actuator only needs to respond to the adapter ring's instructions and doesn't need to understand the camera's coordinate logic. This allows the camera and actuator to focus on their own working logic without needing to be compatible with each other's coordinate systems, significantly improving system compatibility and maintainability.

[0080] The process of generating virtual camera boundary values ​​is as follows: the adapter ring obtains the actual adjustment range of the camera to the native lens; based on the actual adjustment range, virtual camera boundary values ​​that form a mapping relationship with the actual adjustment range of the camera are constructed, and the virtual camera boundary values ​​are reported to the camera.

[0081] For example, given the actual camera adjustment range: Cactual = [200, 800], and the minimum value of the virtual range Cvirtual is 1000, the mapping relationship between the actual camera adjustment range and the virtual camera boundary values ​​can be constructed as follows: ; 1000 is the lower limit of the virtual range, which can be customized; 200 is the lower limit of the actual adjustment range of the camera; and 600 is the actual range span (upper limit - lower limit, used for scaling).

[0082] Furthermore, by substituting the actual adjustment range of the camera [200, 800] into the mapping formula, the virtual boundary value [1000, 2000] can be obtained, thus achieving a linear correspondence between the virtual coordinates and the actual coordinates.

[0083] Step S103: Based on the boundary travel of the drive unit operation and the reported virtual camera boundary values, establish a mapping relationship between the control change of the camera on the native lens and the control change of the adapter ring on the drive unit.

[0084] This step establishes a linear mapping relationship between control variables, ensuring that each unit change in virtual coordinates emitted by the camera corresponds to a precise displacement of the actual travel of the drive component. The linear mapping relationship between control variables is expressed as follows: Mapping relationship between camera and driver: MotorTarget = Mmin + (CamTarget - Cmin) * (Mmax ​​- Mmin) / (Cmax -Cmin); Mapping relationship between driver components and camera: CamTarget = Cmin + (MotorTarget - Mmin) * (Cmax - Cmin) / (Mmax ​​-Mmin); Where Mmin is the minimum boundary of the actuator; Mmax is the maximum boundary of the actuator; Cmin is the minimum boundary of the camera; Cmax is the maximum boundary of the camera; CamTarget is the target position emitted by the camera; and MotorTarget is the mapped target position of the actuator.

[0085] For example, Mmin=-10,000, Mmax=20,000; Cmin=1000, Cmax=2000; when CamTarget=1500, the mapping result is MotorTarget=5000, which is located in the middle of the drive stroke.

[0086] Through this mapping method, the adapter ring can achieve a precise correspondence between the camera coordinates and the actual coordinates of the drive components while ensuring the safety of the drive component's operating boundaries, thereby supporting closed-loop control and high-precision autofocus.

[0087] In step S20, the adapter ring drives the drive unit to operate according to the converted control change, adjusting the lens parameters of the lens coupled to the drive unit.

[0088] In this step, each drive component receives control commands from its corresponding drive component and adjusts its actual travel according to a linear mapping relationship. For example, the aperture drive receives aperture control commands and adjusts the opening and closing of the aperture blades; the focusing drive receives focusing commands and drives the lens assembly to move back and forth to achieve a clear image; and the zoom drive changes the lens focal length according to zoom commands. The coordinated response of all drive components ensures smooth and precise adjustment of camera parameters to meet shooting requirements.

[0089] And, further reading Figure 8 As shown, in some embodiments, before the adapter ring receives the native control commands from the camera and converts the camera's control changes on the native lens into control changes on the drive unit by the adapter ring, the following steps are included: Step S01: The adapter ring establishes a connection with the camera.

[0090] This step includes: the adapter ring receiving power from the camera to ensure correct installation; avoiding subsequent communication failures or hardware damage due to poor contact; and after the adapter ring is correctly installed, in response to the connection with the camera, the adapter ring queries the driver roles existing on the system to obtain the device information of the corresponding role.

[0091] Specifically, during the system initialization phase, the hardware connection between the camera and the adapter ring is established and communication preparations are completed. The implementation process is as follows: After the camera is powered on, the adapter ring can normally receive power from the camera, ensuring correct physical installation. After confirming that the adapter ring is installed correctly, the camera will send a handshake signal to the adapter ring. Upon receiving this signal, the adapter ring will return a response command, thus establishing a data communication link between the two parties. After the connection is successfully established, the adapter ring will immediately perform a device enumeration operation, actively scanning all available drive devices in the system. These motors may include various types such as focus motors, zoom motors, and aperture control motors. The adapter ring will collect detailed parameter information for each motor, including but not limited to key data such as motor model identifier, device unique ID, communication protocol version, and register mapping address.

[0092] Step S02: Based on the connection between the adapter ring and the camera, the adapter ring and the camera exchange information.

[0093] This step includes: in response to the camera's query for a supported protocol version, the adapter ring establishes communication with the camera to adapt to the protocol version; based on the communication connection, the adapter ring feeds back to the camera the status of the buttons and multi-function rings of the simulated native lens; and in response to the camera's query for a lens connected to the adapter ring, the adapter ring parses the lens library stored internally into lens information that the camera can recognize, and returns the parsed lens information to the camera.

[0094] Specifically, the adapter ring and camera body physically connect via a mechanical bayonet and establish electronic contact connections. The camera body provides a reference operating voltage to the adapter ring, establishing the basic electrical link. In response to a protocol version query request from the camera, the adapter ring reports a list of communication protocol versions supported by its firmware. Through a handshake negotiation, both parties select and activate the most efficient and stable protocol version, which serves as the application layer standard for all subsequent data exchanges. After successful communication, the adapter ring proactively reports the status of the virtual peripherals of its simulated native lens to the camera, including but not limited to the number and initial status of custom function buttons and multi-function control rings, such as the status of AF / MF buttons and Fn function buttons. This process transforms the adapter ring from a passive command relay device into an interactive node with active input capabilities. The camera system then assigns control permissions to these virtual peripherals, allowing users to map their functions through the camera menu, thus achieving a personalized operating experience indistinguishable from the original system. Furthermore, in response to the camera's query for the connected lens, the adapter ring first accesses its internally stored lens parameter database, which contains technical specifications for lenses from various brands. It then converts this raw data into a standardized data format that the camera system can recognize and process. After data parsing, the adapter ring returns the processed lens information to the camera system via a communication interface. Upon receiving this standardized lens information, the camera can make precise adjustments based on key parameters such as lens motor stepping.

[0095] In practice, to ensure the camera and adapter ring accurately recognize the connected lens, the system pre-builds a lens database containing parameters for various lenses. This database is typically stored on the adapter ring or its accompanying mobile application. When a user is ready to use the camera system, they can select the currently installed lens model in advance on the adapter ring's control panel or the mobile app. In special cases, such as when using a new lens model or a lens with special specifications whose parameters are not yet included in the existing lens database, the user can manually calibrate the new lens using the mobile app. After calibration, the mobile app transmits and stores the complete parameter information of the new lens into the adapter ring. Furthermore, to continuously improve the lens database, the system also supports uploading newly calibrated lens parameters to a cloud server, expanding the public lens database. Other users can download the latest lens database via the mobile app to upgrade the adapter ring firmware online, ensuring the adapter ring supports a wider range of lenses. This design ensures system compatibility while providing users with a convenient way to expand their capabilities. The overall communication flow is illustrated below. Figure 9 As shown.

[0096] Optionally, the adapter ring also receives drive signals generated by the user operating an external actuator; the change in the amount of the drive actuator is controlled by the drive signal to drive the actuator to operate, thereby adjusting the lens parameters.

[0097] Specifically, users can manually adjust the amount of change in the drive mechanism using external controls to precisely control its movement and personalize lens parameters. The user controls the drive mechanism using a preset control strategy, combining the drive signals generated by the external controls with the camera's native control commands. This synergistic control between manual and built-in automatic modes ensures both operational flexibility and precise, reliable adjustment. In practice, users can flexibly select the most suitable control method based on the specific shooting scenario to achieve optimal results.

[0098] In the electromechanical control system of a camera, the focus motor, aperture motor, and zoom motor are three key actuators. Specifically, both the camera's autofocus function and the focus control function of the intelligent device require the focus motor to achieve precise focusing. To avoid command conflicts caused by the simultaneous operation of two control sources, the adapter ring performs intelligent coordination: when it detects that an external operating device (mobile terminal, handle, handwheel, etc.) begins to take over focus control, the adapter ring immediately sends a signal to the camera, causing it to automatically switch to manual focus mode; after the external operating device ends its control, the adapter ring notifies the camera to resume autofocus mode, ensuring a seamless transition throughout the entire switching process.

[0099] Regarding aperture control, the adapter ring proactively informs the camera body that the lens is equipped with an aperture ring when the camera is powered on. When an external control intervenes in aperture adjustment, the adapter ring performs a dual operation: firstly, it notifies the camera that it is currently in manual aperture mode; secondly, it transmits the specific aperture value set by the external control to the camera in real time. Upon receiving this information, the camera automatically adjusts the aperture value displayed on the camera body to synchronize it with the manually set aperture value, thereby ensuring consistency in parameter display.

[0100] The zoom control employs a more flexible mechanism, allowing both the camera and external actuators to simultaneously send commands to the zoom motor. Since zoom operation does not require mode switching, the adapter ring uses a "last received command takes precedence" arbitration principle: regardless of which party sends the command, the system will use the latest received zoom command to drive the actuators. While this design may result in brief control contention, it maximizes the real-time performance and flexibility of the operation, allowing users to freely choose the control method according to their actual needs.

[0101] And, see Figure 8 As shown, the process of the user controlling the drive mechanism's operation using the drive signals generated by operating the external actuator and the native control commands issued by the camera, according to a preset control strategy, also includes: In step S30, the adapter ring synchronously acquires the position / status information of the drive component and transmits the position / status information to the camera.

[0102] In this step, the adapter ring will collect the operating status data of the drive component in real time during the precise control of the drive component's movement. This includes, but is not limited to, key parameters such as the motor's speed, position, and torque. The adapter ring will then promptly feed this detailed status information back to the camera's control system so that the camera can fully grasp the lens's real-time adjustment status and provide data support for subsequent shooting operations.

[0103] The above are only some or preferred embodiments of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A camera device, characterized in that, Including adapter rings; One side of the adapter ring is used for physical docking with the camera, and the other side is used for physical docking with the lens. The adapter ring establishes a communication connection with the camera. The adapter ring also establishes a communication connection with a drive unit coupled to the lens, so that the adapter ring receives the camera's native control commands and drives the drive unit to operate to adjust the lens parameters.

2. The camera device according to claim 1, characterized in that, The adapter ring has a communication contact at one end near the camera, and the adapter ring communicates with the camera via this communication contact; and... The adapter ring is also provided with a communication interface, through which the adapter ring forms a wired communication with the driving component.

3. The camera device according to claim 1, characterized in that, The adapter ring is equipped with multiple function buttons and a display screen, so that the corresponding information can be displayed on the display screen by operating the function buttons.

4. The camera device according to claim 1, characterized in that, The adapter ring is equipped with a wireless communication module, and the adapter ring is connected to an external mobile terminal through the wireless communication module.

5. The camera device according to claim 1, characterized in that, The adapter ring is also provided with an expansion interface, through which the adapter ring establishes wired communication with external operating components, including a handle, a handwheel, and a foot switch.

6. The camera device according to claim 1, characterized in that, The driving component is a drive motor, and there are multiple drive motors connected in series. Each drive motor is used to adjust its corresponding lens parameters.

7. The camera device according to claim 6, characterized in that, The drive motor includes a drive motor, a drive wheel, and a feedback unit; the drive wheel is connected to the drive motor to adjust the lens parameters under the drive of the drive motor. The feedback unit is configured corresponding to the drive motor and is used to detect the rotation information of the drive motor and feed the rotation information back to the adapter ring.

8. The camera device according to claim 7, characterized in that, The drive motor also includes a steering toggle switch for adjusting the rotation direction of the drive motor.

9. The camera device according to claim 6, characterized in that, The drive motor also includes a character indicator light and a character switching button, so that the character indicator light can be switched by operating the character switching button.

10. The camera device according to claim 7, characterized in that, The drive motor also includes an antenna module for wireless communication with an external mobile terminal.

11. A control method for a camera device, characterized in that, Control methods include: The adapter ring receives the native control commands from the camera and converts the changes in the camera's control over the native lens into changes in the adapter ring's control over the drive components. The adapter ring drives the drive unit to operate based on the converted control changes, adjusting the lens parameters of the lens coupled to the drive unit.

12. The control method for the camera device according to claim 11, characterized in that, The adapter ring receives native control commands from the camera and converts the camera's control changes on the native lens into control changes of the adapter ring on the drive components, including: In response to the communication connection between the adapter ring and the drive unit, the adapter ring acquires and stores the boundary stroke of the drive unit's operation; The adapter ring creates a virtual camera boundary value and reports it to the camera. Based on the boundary travel of the drive unit operation and the reported virtual camera boundary values, a mapping relationship is established between the control changes of the camera on the native lens and the control changes of the adapter ring on the drive unit.

13. The control method for the camera device according to claim 12, characterized in that, In response to the communication connection between the adapter ring and the drive unit, the adapter ring acquires and stores the boundary stroke of the drive unit's operation, including: The current position count value of the feedback unit set in the driver is cleared to zero and recorded as the starting reference point; Control the drive component to move in the first direction until it reaches the physical limit, and record the position count value at this time as the minimum boundary position for the adjustment of the drive component; Control the drive component to move in a second direction opposite to the first direction until it reaches another physical limit, and record the position count value at this time as the maximum boundary position of the drive component adjustment; The boundary travel of the drive unit is obtained and stored by the count difference between the minimum and maximum boundary positions.

14. The control method for the camera device according to claim 12, characterized in that, The adapter ring virtualizes and reports virtual camera boundary values ​​to the camera, including: The adapter ring obtains the actual adjustment range of the camera on the native lens; Based on the actual adjustment range, construct virtual camera boundary values ​​that map to the actual adjustment range of the camera, and report the virtual camera boundary values ​​to the camera.

15. The control method for the camera device according to claim 12, characterized in that, The mapping relationship between the camera's control change on the native lens and the adapter ring's control change on the drive component is expressed as follows: Mapping relationship between camera and driver: MotorTarget = Mmin + (CamTarget - Cmin) * (Mmax ​​- Mmin) / (Cmax - Cmin); Mapping relationship between driver components and camera: CamTarget = Cmin + (MotorTarget - Mmin) * (Cmax - Cmin) / (Mmax ​​- Mmin); Where Mmin is the minimum boundary of the actuator; Mmax is the maximum boundary of the actuator; Cmin is the minimum boundary of the camera; Cmax is the maximum boundary of the camera; CamTarget is the target position emitted by the camera; and MotorTarget is the mapped target position of the actuator.

16. The control method for the camera device according to claim 11, characterized in that, The adapter ring receives the native control commands from the camera and, before converting the camera's control changes on the native lens into control changes on the drive components via the adapter ring, it also includes: The adapter ring establishes a connection with the camera; Based on the connection between the adapter ring and the camera, the adapter ring and the camera exchange information.

17. The control method for the camera device according to claim 16, characterized in that, The connection between the adapter ring and the camera includes: The adapter ring receives power from the camera; In response to the connection with the camera, the adapter ring queries the system for the driver roles present to obtain the corresponding device information.

18. The control method for the camera device according to claim 16, characterized in that, The connection between the adapter ring and the camera, and the information exchange between the adapter ring and the camera, include: In response to the camera's inquiry about supported protocol versions, the adapter ring establishes a communication connection with the camera that is compatible with the protocol version. Based on the communication connection, the adapter loop provides feedback to the camera regarding the status of the buttons and multi-function rings of the simulated native lens; and... In response to the camera's query for the lens connected to the adapter ring, the adapter ring parses the lens library stored inside into lens information that the camera can recognize, and returns the parsed lens information to the camera.

19. The control method for the camera device according to claim 11, characterized in that, The adapter ring also receives drive signals generated by the user operating an external control device; the drive signals control the amount of change in the drive device to drive the drive device to operate, thereby adjusting the lens parameters. In this system, the user controls the operation of the drive components by operating the drive signals generated by the external operating components and the native control commands issued by the camera, using a preset control strategy.

20. The control method for the camera device according to claim 19, characterized in that, The process of the user controlling the drive mechanism operation through the drive signals generated by operating the external operating device and the native control commands issued by the camera in accordance with the preset control strategy also includes: The adapter ring synchronously acquires the position / status information of the drive components and transmits the position / status information to the camera.

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