Charging box circuit and shooting equipment

Abstract

The utility model discloses a charging box circuit and shooting equipment, and the charging box circuit comprises a main control module, a camera interface, a peripheral interface, and a first switching control module. The camera interface comprises a first differential signal pin pair and a charging output pin used for charging a camera; the peripheral interface comprises a second differential signal pin pair; the first switching control module is electrically connected with the main control module, the camera interface and the peripheral interface respectively; the first switching control module switches the first differential signal pin pair of the camera interface to be conducted with the second differential signal pin pair of the peripheral interface when the camera interface is connected to a camera or when the camera interface is connected to the camera and the peripheral interface is connected to the peripheral device. According to the technical scheme, the camera can be charged, data can be transmitted with external equipment, the operation of the camera is simplified, and the efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of shooting equipment technology, and in particular to a charging box circuit and a shooting device. Background Technology

[0002] Currently, cameras have gradually become common devices in people's lives, especially action cameras, which are increasingly widely used. Users use action cameras to capture and record travel scenery, daily life, and more. However, action cameras have limited battery life and need to be charged regularly. Most existing action cameras only have one interface, which is used for charging or data transfer with external devices. However, when the action camera is connected to a charger or charging case, the interface is occupied, preventing connection to external devices and data transfer. Data transfer can only be performed after the camera is fully charged, making the process cumbersome and inefficient. Utility Model Content

[0003] This invention provides a charging box circuit, which aims to enable the camera to transmit data with external devices while charging in the charging box, thereby simplifying camera operation and improving camera efficiency.

[0004] To achieve the above objectives, this utility model proposes a charging box circuit, comprising:

[0005] Main control module;

[0006] A camera interface for connecting a camera, the camera interface including a first differential signal pin pair and a charging output pin for charging the camera;

[0007] A peripheral interface for connecting external devices, the peripheral interface including a second differential signal pin pair;

[0008] The first switching control module is electrically connected to the main control module, the camera interface, and the peripheral interface, respectively.

[0009] When the camera is connected to the camera interface, or when the camera is connected to the camera interface and the peripheral interface is connected to an external device, the first switching control module switches the first differential signal pin pair of the camera interface to be connected with the second differential signal pin pair of the peripheral interface; and when the camera is not connected to the camera interface, the third differential signal pin pair of the main control module switches to be connected with the second differential signal pin pair of the peripheral interface.

[0010] In some embodiments, the camera interface further includes a feedback pin for feedback of camera access status, the first switching control module is electrically connected to the feedback pin, the feedback pin feeds back a first signal when a camera is connected to the camera interface, and the feedback pin feeds back a second signal when a camera is not connected to the camera interface.

[0011] In some embodiments, the charging box circuit further includes a first switch module and an energy storage module electrically connected to the main control module. The main control module includes a power supply output terminal. The first switch module is electrically connected to the power supply output terminal of the main control module and the charging output pin. The trigger terminal of the first switch module is electrically connected to the feedback pin. The second switch module is turned on when the camera interface is connected to a camera and the peripheral interface is connected to an external device, and turned off when the camera interface is not connected to a camera or the peripheral interface is not connected to an external device.

[0012] In some embodiments, the camera interface further includes an indicator light power supply pin, and the charging box circuit further includes a second switch module. One connection terminal of the second switch module is electrically connected to the power supply pin of the peripheral interface, and the other connection terminal is electrically connected to the indicator light power supply pin. The trigger terminal of the second switch module is electrically connected to the feedback pin. The second switch module is turned on when the camera interface is connected to a camera and the peripheral interface is connected to an external device, and turned off when the camera interface is not connected to a camera or the peripheral interface is not connected to an external device.

[0013] In some embodiments, the first switching control module includes an SGM7227 and a switching unit. The S pin and VCC pin of the SGM7227 are electrically connected. The VCC pin is electrically connected to the power supply pin of the peripheral interface or the power supply output terminal of the main control module via a resistor of a first resistance value. The VCC pin is also grounded via another resistor of a first resistance value. One end of the switching unit is electrically connected to the S pin, and the other end is grounded via a resistor of a second resistance value. The trigger terminal of the switching unit is electrically connected to the feedback pin, wherein the second resistance value is less than the first resistance value.

[0014] In some embodiments, the camera interface further includes a communication pin pair, and the main control module is electrically connected to the communication pin pair to communicate with the camera through the communication pin pair;

[0015] And / or,

[0016] The charging box circuit also includes a power supply switching module, which is electrically connected to the main control module and the peripheral interface. The power supply switching module includes an output terminal that is electrically connected to the charging output pin. When an external device is connected to the peripheral interface, the power supply switching module switches its output terminal to be connected to the power supply pin of the peripheral interface, and when no external device is connected to the peripheral interface, it switches its output terminal to be connected to the power supply output terminal of the main control module.

[0017] And / or,

[0018] The camera interface is a POGOPIN interface.

[0019] In some embodiments, the peripheral interface is a Type-C interface or a Lightning interface, and the peripheral interface includes two second differential signal pin pairs symmetrically arranged on both sides thereof, both of which are electrically connected to the first switching control module.

[0020] In some embodiments, the charging box circuit further includes a second switching control module and a positive / negative insertion identification module, the camera interface further includes a first ultra-high-speed data transmission channel, the peripheral interface is a Type-C interface, and the peripheral interface further includes a second ultra-high-speed data transmission channel and a third ultra-high-speed data transmission channel, a CC1 pin and a CC2 pin;

[0021] The second switching control module is electrically connected to the first ultra-high-speed data transmission channel of the camera interface, the second ultra-high-speed data transmission channel of the peripheral interface, and the third ultra-high-speed data transmission channel, respectively.

[0022] The reversible insertion identification module is electrically connected to the second switching control module, the CC1 pin, and the CC2 pin. The reversible insertion identification module outputs a corresponding direction control signal to the second switching control module according to the level state of the CC1 pin and the CC2 pin. The second switching control module connects the first ultra-high-speed data transmission channel of the camera interface to the second ultra-high-speed data transmission channel or the third ultra-high-speed data transmission channel of the peripheral interface according to the direction control signal, so as to adapt to the reversible insertion direction of the peripheral interface.

[0023] In some embodiments, the second switching control module includes an AW3410S, and the positive / negative insertion identification module is electrically connected to the SEL pin of the AW3410S to output the direction control signal to the SEL pin.

[0024] This utility model also proposes a shooting device, including the above-mentioned charging box circuit, or including a camera and the above-mentioned charging box circuit.

[0025] The technical solution of the charging box circuit of this utility model involves adding a first switching control module, which is electrically connected to the camera interface, peripheral interface, and main control module. When a camera is connected to the camera interface (i.e., the camera is connected to the camera interface for charging), or when both the camera and an external device are connected, the first switching control module conducts a differential signal pin pair between the camera interface and the second differential signal pin pair of the peripheral interface. This establishes a differential signal transmission path between the camera and the external device, enabling data transmission between them. This allows the user to charge the camera using the charging box. While charging, it also enables data transmission between the camera and external devices. Compared to existing technologies that require the camera to be fully charged before connecting it to external devices for data transmission, this invention simplifies camera operation and improves efficiency. Furthermore, when the camera is not connected (i.e., the camera is disconnected from the camera interface), the first switching control module switches the third differential signal pin pair of the main control module to the second differential signal pin pair of the peripheral interface to establish a differential signal transmission path between the main control module and the external device, thus preserving the original functions of the charging box's peripheral interface. Attached Figure Description

[0026] Figure 1 This is a circuit module diagram of one embodiment of the charging box circuit of this utility model;

[0027] Figure 2 This is a circuit module diagram of a second embodiment of the charging box circuit of this utility model;

[0028] Figure 3 This is a circuit diagram of an embodiment of the first switch module of the charging box circuit of this utility model;

[0029] Figure 4 The circuit module diagrams are for three embodiments of the charging box circuit of this utility model;

[0030] Figure 5 This is a circuit diagram of an embodiment of the second switch module of the charging box circuit of this utility model;

[0031] Figure 6 This is a circuit diagram of an embodiment of the first switching control module of the charging box circuit of this utility model;

[0032] Figure 7 This is a circuit module diagram of four embodiments of the charging box circuit of this utility model;

[0033] Figure 8 This is a circuit module diagram of five embodiments of the charging box circuit of this utility model;

[0034] Figure 9 This is a circuit module diagram of six embodiments of the charging box circuit of this utility model;

[0035] Figure 10 This is a circuit diagram of an embodiment of the second switching control module of the charging box circuit of this utility model. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment 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 indicator will also change accordingly.

[0038] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0039] Furthermore, the use of terms such as "first" and "second" in this utility model is 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 by this utility model.

[0040] This invention proposes a charging box circuit for use in shooting devices (such as action cameras) and in conjunction with the camera.

[0041] Reference Figure 1In this embodiment, the charging box circuit includes a main control module 10, a camera interface 20, a peripheral interface 30, and a first switching control module 40. The main control module 10 can be a System-on-Chip (SOC) of the charging box, integrating various functional modules (such as a power management module, communication module, sensor module, storage module, control logic module, interface module, power management module, and security module). The charging box circuit also includes an energy storage module 50 (such as a battery module), and the main control module 10 is electrically connected to the energy storage module 50, controlling its charging and discharging. The main control module 10 includes a third differential signal pin pair 11, which may be, for example, a general-purpose data pin pair.

[0042] The camera interface 20 is used to connect a camera. The camera interface 20 includes a first differential signal pin pair 21 and a charging output pin 22 for charging the camera. The first differential signal pin pair 21 is used to transmit data or signals. The camera has an adapter interface corresponding to the camera interface 20. When the camera interface 20 is connected to the camera, the charging box outputs a charging current to the camera through the charging output pin 22 to charge the camera. The charging output pin 22 can be directly connected to the energy storage module 50, or to the main control module 10, or to the power pin 32 of the peripheral interface 30. The charging current output by the charging box to the camera through the charging output pin 22 can be directly provided by the energy storage module 50, provided by the main control module 10, or provided by the power pin 32 of the peripheral interface 30. This embodiment... Figure 1 The example shown is simply the electrical connection between the charging output pin 22 and the main control module 10.

[0043] The peripheral interface 30 is used to connect external devices (e.g., computers, mobile phones, tablets, chargers, etc.). The peripheral interface 30 includes a second differential signal pin pair 31, which is used to transmit data or signals. Of course, the peripheral interface 30 also includes a power pin 32, which is electrically connected to the main control module 10. The charging box can be connected to a charger through the peripheral interface 30 to charge the energy storage module 50 of the charging box.

[0044] The first switching control module 40 is electrically connected to the main control module 10, the camera interface 20, and the peripheral interface 30, respectively. The first switching control module 40 can detect whether the camera interface 20 is connected to a camera, or both, through a detection module or a detection terminal, detect whether the camera interface 20 is connected to a camera and whether the peripheral interface 30 is connected to an external device. Specifically, the first switching control module 40 is configured to: when the camera interface 20 is connected to a camera, or when both the camera interface 20 and the peripheral interface 30 are connected to an external device, switch the first differential signal pin pair 21 of the camera interface 20 to be connected to the second differential signal pin pair 31 of the peripheral interface 30, thereby establishing a differential signal transmission path between the camera and the external device; and when the camera interface 20 is not connected to a camera, switch the third differential signal pin pair 11 of the main control module 10 to be connected to the second differential signal pin pair 31 of the peripheral interface 30, thereby establishing a differential signal transmission path between the main control module 10 and the external device. The first switching control module 40 may be a module including a multiplexer or an analog switch chip based on MOSFETs, or it may be a module including a digital switch chip or a switch switching circuit composed of discrete components.

[0045] The working principle of the charging box circuit in this embodiment is as follows: When the camera is connected to the camera interface 20 of the charging box circuit (i.e., when the camera interface 20 is connected to the camera), the main control module 10 outputs charging current to the charging output pin 22 to charge the camera; at the same time, the first switching control module 40 switches the first differential signal pin pair 21 of the camera interface 20 to be connected with the second differential signal pin pair 31 of the peripheral interface 30 to establish a differential signal transmission path between the camera and the external device. At this time, when the peripheral interface 30 is connected to the external device, data can be transmitted with the camera through the differential signal transmission path between the camera and the external device; or when the camera is connected to the camera interface 20 of the charging box circuit and the peripheral interface 30 is connected to the external device, the first switching control module 40 switches the first differential signal pin pair 21 of the camera interface 20 to be connected with the second differential signal pin pair 31 of the peripheral interface 30 to be connected to the external device. The second differential signal pin pair 31 of the peripheral interface 30 is turned on to establish a differential signal transmission path between the camera and the external device. At this time, the camera and the external device can transmit data through the differential signal transmission path between the camera and the external device. When the camera is not connected to the camera interface 20 of the charging box circuit (i.e., when the interface is not connected to the camera), the first switching control module 40 switches the third differential signal pin pair 11 of the main control module 10 to be turned on with the second differential signal pin pair 31 of the peripheral interface 30 to establish a differential signal transmission path between the main control module 10 and the external device. At this time, when the peripheral interface 30 is connected to the external device, the external device can transmit data with the main control module 10 or charge the energy storage module 50 of the charging box. For example, the external device can burn programs or store data to the main control module 10 through the peripheral interface 30.

[0046] The technical solution of the charging box circuit in this embodiment adds a first switching control module 40, which is electrically connected to the camera interface 20, the peripheral interface 30, and the main control module 10. When the camera is connected to the camera interface 20 (i.e., the camera is connected to the camera interface 20 for charging), or when the camera is connected to the camera interface 20 and the peripheral interface 30 is connected to an external device, the first switching control module 40 conducts the first differential signal pin pair 21 of the camera interface 20 and the second differential signal pin pair 31 of the peripheral interface 30 to establish a differential signal transmission path between the camera and the external device. This allows the camera and the external device to transmit data, enabling data transmission between the camera and the external device while the user is charging the camera using the charging box. Compared to the prior art, which requires the camera to be fully charged before connecting it to the external device to transmit data, the solution in this embodiment makes camera operation simpler and improves efficiency. In addition, when the camera is not connected (i.e. the camera is disconnected from the camera interface 20), the first switching control module 40 switches the third differential signal pin pair 11 of the main control module 10 to be connected with the second differential signal pin pair 31 of the peripheral interface 30, so as to establish a differential signal transmission path between the main control module 10 and the external device, and retain the original functions of the peripheral interface 30 of the charging box, namely, charging the charging box through the charger, and external devices burning programs or transmitting data to the main control module 10.

[0047] In some embodiments, the first differential signal pin pair 21, the second differential signal pin pair 31, and the third differential signal pin pair 11 may be the D+ and D- signal pins in the USB protocol of the camera interface 20, the D+ and D- signal pins in the USB protocol of the peripheral interface 30, and the D+ and D- signal pins in the USB protocol of the main control module 10, respectively.

[0048] In some embodiments, the camera interface 20 may be a POGOPIN interface, making it easier to connect and disconnect the camera from the camera interface 20. Of course, in other embodiments, the camera interface 20 may be other types of interfaces.

[0049] The determination of whether a camera is connected to the camera interface 20 can be achieved, for example, by using a detection module to check whether a camera is connected to the camera interface 20. When the detection module detects that a camera is connected to the camera interface 20, it sends a corresponding signal to the first switching control module 40; when it does not detect that a camera is connected to the camera interface 20, it does not send a signal. (Refer to...) Figure 1In this embodiment, the camera interface 20 further includes a feedback pin 23 for feedback on the camera access status. The first switching control module 40 is electrically connected to the feedback pin 23. The feedback pin 23 feeds back a first signal when the camera interface 20 is connected to a camera, and a second signal when the camera interface 20 is not connected to a camera. For example, the first signal is a low-level signal (i.e., the camera pulls the potential of the feedback pin 23 low), and the second signal is a high-impedance signal or a high-level signal. Thus, the first switching control module 40 can determine whether the camera interface 20 is connected to a camera based on the signal fed back by the feedback pin 23, eliminating the need for a detection module and simplifying the circuit structure. Specifically, when the first switching control module 40 receives the first signal from the feedback pin 23, it can determine that the camera interface 20 is connected to a camera; and when the first switching control module 40 receives the second signal from the feedback pin 23, it can determine that the camera is not connected to a camera.

[0050] Reference Figure 2 In some embodiments, the charging box circuit further includes a first switch module 60. The main control module 10 includes a power supply output terminal 12. The first switch module 60 is electrically connected to the power supply output terminal 12 of the main control module 10 and the charging output pin 22. That is, one connection terminal of the first switch module 60 is electrically connected to the power supply output terminal 12 of the main control module 10, and the other connection terminal is electrically connected to the charging output pin 22. The trigger terminal of the first switch module 60 is electrically connected to the feedback pin 23. The first switch module 60 is turned on when the camera interface 20 is connected to the camera and turned off when the camera interface 20 is not connected to the camera. The working principle of the first switch module 60 in this embodiment is as follows: When the camera is connected to the camera interface 20, the feedback pin 23 outputs a first signal (e.g., a low-level signal), that is, the trigger end of the first switch module 60 is the first signal, which triggers the first switch module 60 to conduct, thereby connecting the power supply output end 12 of the main control module 10 with the charging output pin 22. The power supply output end 12 of the main control module 10 outputs current to the camera through the charging output pin 22 to charge the camera; when the camera is not connected to the camera interface 20, the feedback pin 23 outputs a second signal (e.g., a high-impedance signal or a high-level signal), that is, the trigger end of the first switch module 60 is the second signal. At this time, the first switch module 60 is not triggered, thereby keeping the power supply output end 12 of the main control module 10 disconnected from the charging output pin 22.

[0051] The technical solution of this embodiment, by setting a first switch module 60, controls whether the charging output pin 22 is connected to the power supply output terminal 12 of the main control module 10 according to whether the camera interface 20 is connected to the camera (i.e., controls whether the charging output pin 22 has voltage). This ensures that the charging output pin 22 is only connected to the power supply output terminal 12 of the main control module 10 when the camera interface 20 is connected to the camera, and disconnected from the power supply output terminal 12 of the main control module 10 when the camera interface 20 is not connected to the camera. This avoids leakage or short circuit of the charging output pin 22 when the camera is not connected, thus improving the safety of the charging box circuit.

[0052] Among them, reference Figure 3 The first switching module 60 may include, for example, a first PMOS transistor Q1, a first resistor R1, a first capacitor C1, and a second resistor R2. The gate of the first PMOS transistor Q1 is electrically connected to the feedback pin 23 via the second resistor R2. The source of the first PMOS transistor Q1 is electrically connected to the power supply output terminal 12 of the main control module 10. The drain of the first PMOS transistor Q1 is electrically connected to the charging output pin 22. The first capacitor C1 and the first resistor R1 are connected in parallel between the gate and the source of the first PMOS transistor Q1. The circuit working principle of the first switch module 60 is as follows: When the camera interface 20 is connected to the camera, the camera pulls the potential of the feedback pin 23 low, making the gate of the first PMOS transistor Q1 low, thus turning on the first PMOS transistor Q1 and connecting the charging output pin 22 to the power supply output terminal 12 of the main control module 10. When the camera interface 20 is not connected to the camera, the feedback pin 23 remains in a high-impedance state or a high-level state, the gate of the first PMOS transistor Q1 is in a high-impedance state or a high-level state, the first PMOS transistor Q1 is not turned on, and the charging output pin 22 remains disconnected from the power supply output terminal 12 of the main control module 10. Of course, in other embodiments, the first switch module 60 can also be other circuit structures, or a switch chip, etc.

[0053] Reference Figure 4In some embodiments, the camera interface 20 further includes an indicator power supply pin 24 for powering the indicator lights of the charging case and / or the camera; the charging case circuit also includes a second switch module 70, one connection terminal (denoted as the first connection terminal) of the second switch module 70 is electrically connected to the power supply pin 32 of the peripheral interface 30, the other connection terminal is electrically connected to the indicator power supply pin 24, the trigger terminal of the second switch module 70 is electrically connected to the feedback pin 23, the second switch module 70 is turned on when the camera interface 20 is connected to the camera and the peripheral interface 30 is connected to an external device, and is turned off when the camera interface 20 is not connected to the camera or the peripheral interface 30 is not connected to an external device. The working principle of this embodiment is as follows: When the camera is connected to the camera interface 20 and the external device is connected to the peripheral interface 30, the trigger terminal of the second switch module 70 outputs the first signal from the feedback pin 23, and the first connection terminal of the second switch module 70 receives a voltage signal from the external device to the power pin 32 of the peripheral interface 30. At this time, both the trigger terminal and the first connection terminal of the second switch module 70 meet the conduction condition, and the second switch module 70 is turned on, making the power pin 32 of the peripheral interface 30 connected to the indicator power supply pin 24. The indicator power supply pin 24 has a voltage signal, so the indicator power supply pin 24 can supply power to the indicator lights of the charging box and / or the camera, and the indicator lights of the charging box and / or the camera can be lit to indicate that the charging box is simultaneously connected to the external device. When the camera interface 20 is not connected to the camera, the trigger terminal of the second switch module 70 outputs the second signal from the feedback pin 23. Or, when the peripheral interface 30 is not connected to the external device, the first connection terminal of the second switch module 70 has no voltage signal. At this time, the second switch module 70 does not meet the conduction condition and is not turned on. This causes the power supply pin 32 of the peripheral interface 30 to be disconnected from the indicator power supply pin 24. The indicator power supply pin 24 has no voltage signal, so the indicator power supply pin 24 cannot supply power to the indicator lights of the charging box and / or the camera. The indicator lights of the charging box and / or the camera are not lit, indicating that the charging box is not connected to both the camera and the external device at the same time, or indicating that at least one of the camera or external device is not properly connected.

[0054] Among them, reference Figure 5The second switching module 70 may include, for example, a second PMOS transistor Q2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a second capacitor C2. The gate of the second PMOS transistor Q2 is electrically connected to the feedback pin 23 via the third resistor R3. The source of the second PMOS transistor Q2 is electrically connected to the power supply pin 32 of the peripheral interface 30 via the fourth resistor R4. The drain of the second PMOS transistor Q2 is electrically connected to the indicator power supply pin 24, and the drain of the second PMOS transistor Q2 is grounded via the fifth resistor R5. The second capacitor C2 and the sixth resistor R6 are connected in parallel between the gate and the source of the second PMOS transistor Q2. The circuit working principle of the second switching module 70 is as follows: When the camera interface 20 is connected to the camera, the camera pulls the potential of the feedback pin 23 low, making the gate of the second PMOS transistor Q2 low. At this time, when the peripheral interface 30 is also connected to an external device, the source of the first PMOS transistor is high, thus making the voltage difference between the gate and source of the second PMOS transistor Q2 less than the threshold voltage, satisfying the conduction condition, and the second PMOS transistor Q2 conducts, connecting the power supply pin 32 of the peripheral interface 30 to the indicator power supply pin 24; when the camera interface 20 is not connected to the camera... When feedback pin 23 remains in a high-impedance or high-level state, the gate of the second PMOS transistor Q2 is also in a high-impedance or high-level state, preventing Q2 from meeting the conduction condition. Similarly, when peripheral interface 30 is not connected to an external device, the source of the second PMOS transistor Q2 is in a high-impedance state, also preventing Q2 from meeting the conduction condition. Therefore, when camera interface 20 is not connected to a camera or peripheral interface 30 is not connected to an external device, the second PMOS transistor Q2 does not conduct, preventing the power supply pin 32 of peripheral interface 30 from connecting to the indicator light power supply pin 24. Of course, in other embodiments, the second switch module 70 can also be other circuit structures or switch chips, etc.

[0055] Reference Figure 6 In some embodiments, the first switching control module 40 includes an SGM7227 and a switching unit 41. The S pin and VCC pin of the SGM7227 are electrically connected. The VCC pin is electrically connected to the power supply pin 32 of the peripheral interface 30 or the power supply output terminal 12 of the main control module 10 via a resistor of a first resistance value. Figure 6Taking the power supply pin 32 of the peripheral interface 30 as an example, the VCC pin of the SGM7227 is also grounded through another resistor of the first resistance value. One end of the switching unit 41 (denoted as the first end) is electrically connected to the S pin, and the other end (denoted as the second end) is grounded through a resistor of the second resistance value. The trigger end of the switching unit 41 is electrically connected to the feedback pin 23. The second resistance value is less than the first resistance value. For example, the first resistance value is 5.1K and the second resistance value is 1K. The SGM7227 has three differential signal pin pairs: D+ / D-, HSD1+ / HSD1-, and HSD2+ / HSD2-. D+ / D- is connected to the second differential signal pin pair 31 of the peripheral interface 30, HSD1+ / HSD1- is connected to the first differential signal pin pair 21 of the camera interface 20, and HSD2+ / HSD2- is connected to the third differential signal pin pair 11 of the main control module 10. When the S pin of the SGM7227 is low, D+ / D- and HSD1+ / HSD1- are turned on. When the S pin of the SGM7227 is high, D+ / D- and HSD2+ / HSD2- are turned on.

[0056] When the VCC pin of the SGM7227 is electrically connected to the power pin 32 of the peripheral interface 30 via a resistor of the first resistance value, the working principle of the first switching control module 40 is as follows: When the camera interface 20 is connected to the camera and the peripheral interface 30 is connected to an external device, the feedback pin 23 is the first signal, triggering the switching unit 41 to conduct. The power pin 32 of the peripheral interface 30 is a high-level signal, making the VCC pin a high-level signal. The voltage of the S pin is the voltage division value on the grounding resistor of the second terminal of the switching module, which is a low level. The D+ / D- and HSD1+ / HSD1- of the SGM7227 are connected, that is, the first differential signal pin pair 21 of the camera interface 20 and the second differential signal pin pair 31 of the peripheral interface 30 are connected. The differential signal transmission path between the camera and the external device is established. When the camera interface 20 is not connected to the camera and the external device is connected to the external device, the feedback pin 23 is the second signal, which makes the switch unit 41 not conduct. The power supply pin 32 of the external interface 30 is a high-level signal, which makes the VCC pin a high-level signal. The voltage of the S pin is the voltage division value of the grounding resistor of the VCC pin, which is half of the voltage of the VCC pin, and is a high level. At this time, D+ / D- and HSD2+ / HSD2- of SGM7227 are connected, that is, the third differential signal pin pair 11 of the main control module 10 is connected to the second differential signal pin pair 31 of the external interface 30, thus establishing a differential signal transmission path between the main control module 10 and the external device.

[0057] When the VCC pin of the SGM7227 is electrically connected to the power supply output terminal 12 of the main control module 10 via a resistor of the first resistance value, the working principle of the first switching control module 40 is as follows: When the camera interface 20 is connected to the camera, the feedback pin 23 is the first signal, which triggers the switching unit 41 to conduct. The voltage of the VCC pin is the voltage of the power supply output terminal 12 of the main control module 10, which is a high level. The voltage of the S pin is the voltage division value on the grounding resistor of the second terminal of the switching module, which is a low level. The D+ / D- and HSD1+ / HSD1- of the SGM7227 are connected, that is, the first differential signal pin pair 21 of the camera interface 20 and the second differential signal pin pair 31 of the peripheral interface 30 are connected. When the camera interface 20 is not connected to the camera, the feedback pin 23 is the second signal, which makes the switching unit 41 not conduct. The voltage of the VCC pin is the voltage of the power supply output terminal 12 of the main control module 10, which is high level. The voltage of the S pin is the voltage division value of the grounding resistor of the VCC pin, which is half of the voltage of the VCC pin, and is also high level. At this time, D+ / D- and HSD2+ / HSD2- of SGM7227 are turned on, that is, the third differential signal pin pair 11 of the main control module 10 is turned on and the second differential signal pin pair 31 of the peripheral interface 30, thus establishing a differential signal transmission path between the main control module 10 and the external device.

[0058] In this embodiment, the switching unit 41 can be, for example, a PMOS transistor, with its gate serving as the trigger terminal, its source as the first terminal, and its drain as the second terminal. Of course, in other embodiments, the switching unit 41 can also be other switching transistors, switching circuits, or switching chips, etc.

[0059] Reference Figure 7 In some embodiments, the camera interface 20 further includes a communication pin pair 25. The main control module 10 is electrically connected to the communication pin pair 25 to communicate with the camera. When the camera interface 20 is connected to the host, the main control module 10 and the camera's SOC communicate through the communication pin pair 25 to transmit control commands or data. The communication pin pair 25 can be, for example, a serial port pin, but it can also be other types of pins.

[0060] Reference Figure 8In some embodiments, the charging box circuit further includes a power switching module 80, which is electrically connected to the main control module 10 and the peripheral interface 30. The power switching module 80 includes an output terminal electrically connected to the charging output pin 22. When an external device is connected to the peripheral interface 30, the power switching module 80 switches its output terminal to be connected to the power supply pin 32 of the peripheral interface 30; when no external device is connected to the peripheral interface 30, it switches its output terminal to be connected to the power supply output terminal 12 of the main control module 10. The power switching module 80 can determine whether the peripheral interface 30 is connected to an external device based on the signal state of the power supply pin 32. When the peripheral interface 30 is connected to an external device, the power supply pin 32 is at a high level; when no external device is connected, the power supply pin 32 is in a high-impedance state. The power switching module 80 can be a circuit composed of a switching transistor or a switching chip, etc. In this embodiment, the power supply switching module 80 switches to power supply for the charging output pin 22 based on whether the peripheral interface 30 is connected to an external device. When the peripheral interface 30 is connected to an external device, the power supply pin 32 of the peripheral interface 30 supplies power to the charging output pin 22. When the peripheral interface 30 is not connected to an external device, the power supply output terminal 12 of the main control module 10 supplies power to the charging output pin 22. Thus, when the camera interface 20 is connected to the camera and the peripheral interface 30 is connected to an external device, a charging circuit is established between the external device and the camera, and the external device provides charging current to the camera, reducing the power consumption of the charging box.

[0061] Of course, in some embodiments, a switch module can also be set between the output terminal of the power supply switching module 80 and the charging output pin 22. The conduction trigger of the switch module can be the same as the conduction trigger condition of the first switch module 60 mentioned above, that is, it conducts when the feedback pin 23 is the first signal (that is, it conducts when the camera interface 20 is connected to the camera). In this way, when the camera interface 20 is not connected to the camera, the charging output pin 22 has no electrical signal, avoiding abnormal situations such as leakage or short circuit, and improving the safety of the charging box.

[0062] In some embodiments, the peripheral interface 30 is a Type-C interface or a Lightning interface. The peripheral interface 30 includes two second differential signal pin pairs 31 symmetrically arranged on both sides, and both second differential signal pin pairs 31 are electrically connected to the first switching control module 40. Thus, regardless of whether an external device is plugged into the peripheral interface 30 in the correct orientation (positive or negative), the electrical connection of the external device to the first switching control module 40 via the second differential signal pin pairs 31 can be guaranteed. Of course, in other embodiments, the peripheral interface 30 may also be a USB 2.0 interface or other types of interfaces.

[0063] Reference Figure 9In some embodiments, the charging box circuit further includes a second switching control module 90 and a reversible insertion identification module 100. The camera interface 20 also includes a first ultra-high-speed data transmission channel 26. The peripheral interface 30 is a Type-C interface and also includes a second ultra-high-speed data transmission channel 33 and a third ultra-high-speed data transmission channel 34, a CC1 pin 35, and a CC2 pin 36. The second switching control module 90 is electrically connected to the first ultra-high-speed data transmission channel 26 of the camera interface 20, the second ultra-high-speed data transmission channel 33 of the peripheral interface 30, and the third ultra-high-speed data transmission channel 34, respectively. The reversible insertion identification module 100 is electrically connected to the second switching control module 90, CC1 pin 35 and CC2 pin 36. The reversible insertion identification module 100 outputs a corresponding direction control signal (e.g., a level signal) to the second switching control module 90 according to the level state of CC1 pin 35 and CC2 pin 36. The second switching control module 90 connects the first ultra-high-speed data transmission channel 26 of the camera interface 20 with the second ultra-high-speed data transmission channel 33 or the third ultra-high-speed data transmission channel 34 of the peripheral interface 30 according to the direction control signal, so as to adapt to the reversible insertion direction of the peripheral interface 30.

[0064] Since the voltage levels of pins CC1 (35) and CC2 (36) of the Type-C interface will be corresponding when an external device is plugged into the Type-C interface in the correct orientation and in the reverse orientation, the orientation identification module 100 identifies the direction in which the external device is plugged into the Type-C interface based on the voltage levels of pins CC1 (35) and CC2 (36). The module then outputs a corresponding direction control signal to the second switching control module 90. This allows the second switching control module 90 to accurately connect the ultra-high-speed data transmission channel (second ultra-high-speed data transmission channel 33 or third ultra-high-speed data transmission channel 34) connecting the peripheral interface 30 to the external device, and the first ultra-high-speed data transmission channel 26 of the camera interface 20, thereby establishing an ultra-high-speed data transmission path between the camera and the external device.

[0065] The technical solution of this embodiment, by setting a second switching control module 90 and a forward / reverse insertion identification module 100, enables the camera to connect to the camera interface 20 for charging while simultaneously establishing an ultra-high-speed data transmission path between the camera and external devices through the second switching control module 90. This achieves ultra-high-speed data transmission using USB 3.0 or higher protocols, significantly improving the data transmission speed between the camera and external devices, thereby enhancing the camera's data transmission efficiency.

[0066] The orientation identification module 100 may include a level detection circuit and a signal output pin. The level detection circuit is electrically connected to pin 35 of CC1 and pin 36 of CC2. Based on the level states of pins 35 of CC1 and 36 of CC2, the corresponding direction control signal (high level or low level) is output from the signal output pin. Of course, in some embodiments, the orientation identification module 100 may also be other switching chips or switching circuits.

[0067] The second switching control module 90 may be a module including a multiplexer or an analog switch chip based on MOSFETs, or it may be a module including a digital switch chip or a switch switching circuit composed of discrete components.

[0068] In some embodiments, the first high-speed data transmission channel 26 may be the SSTX+ / SSTX- and SSRX+ / SSRX- pin pairs in the USB 3.0 and above protocol of the camera interface 20, the second high-speed data transmission channel 33 may be the SSTX1+ / SSTX1- and SSRX1+ / SSRX1- pin pairs in the USB 3.0 and above protocol of the Type-C interface, and the third high-speed data transmission channel 34 may be the SSTX2+ / SSTX2- and SSRX2+ / SSRX2- pin pairs in the USB 3.0 and above protocol of the Type-C interface.

[0069] Combined with reference Figure 9 and Figure 10In some embodiments, the second switching control module 90 includes an AW3410S, and the reversible insertion identification module 100 is electrically connected to the SEL pin of the AW3410S to output a direction control signal to the SEL pin. The AW3410S includes three sets of ultra-high-speed data transmission channels, each set of which includes four pins. The three sets of ultra-high-speed data transmission channels are (A0+ / A0- and A1+ / A1-), (B0+ / B0- and C0+ / C0-), and (B1+ / B1- and C1+ / C1-). Specifically, the first ultra-high-speed data transmission channel 26 of the camera interface 20 is connected to the A0+ / A0- and A1+ / A1- pins of the AW3410S, the second ultra-high-speed data transmission channel 33 of the Type-C interface is connected to the B0+ / B0- and C0+ / C0- pins of the AW3410S, and the third ultra-high-speed data transmission channel 34 of the Type-C interface is connected to the B1+ / B1- and C1+ / C1- pins of the AW3410S. When the SEL pin of the AW3410S is low, A0+ / A0- and A1+ / A1- of the AW3410S conduct B0+ / B0- and C0+ / C0-, that is, the first ultra-high-speed data transmission channel 26 of the main control module 10 is connected to the second ultra-high-speed data transmission channel 33 of the peripheral interface 30, establishing an ultra-high-speed data transmission path between the camera and the external device; when the SEL pin of the AW3410S is high, A0+ / A0- and A1+ / A1- of the AW3410S conduct B1+ / B1- and C1+ / C1-, that is, the first ultra-high-speed data transmission channel 26 of the main control module 10 is connected to the third ultra-high-speed data transmission channel 34 of the peripheral interface 30, establishing an ultra-high-speed data transmission path between the camera and the external device.

[0070] This utility model further proposes a shooting device, which includes a charging box circuit, or includes a camera and the above-mentioned charging box circuit (for example, the shooting device is a device including a camera and a charging box). The specific structure of the charging box circuit is as described in the above embodiments. Since this shooting device adopts all the technical solutions of all the above-mentioned charging box circuit embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described in detail here.

[0071] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A charging box circuit, characterized in that, include: Main control module; A camera interface for connecting a camera, the camera interface including a first differential signal pin pair and a charging output pin for charging the camera; A peripheral interface for connecting external devices, the peripheral interface including a second differential signal pin pair; The first switching control module is electrically connected to the main control module, the camera interface, and the peripheral interface, respectively. When the camera is connected to the camera interface, or when the camera is connected to the camera interface and the peripheral interface is connected to an external device, the first switching control module switches the first differential signal pin pair of the camera interface to be connected with the second differential signal pin pair of the peripheral interface; and when the camera is not connected to the camera interface, the third differential signal pin pair of the main control module switches to be connected with the second differential signal pin pair of the peripheral interface.

2. The charging box circuit according to claim 1, characterized in that, The camera interface also includes a feedback pin for feedback on the camera access status. The first switching control module is electrically connected to the feedback pin. The feedback pin feeds back a first signal when a camera is connected to the camera interface, and feeds back a second signal when a camera is not connected to the camera interface.

3. The charging box circuit according to claim 2, characterized in that, The charging box circuit also includes a first switch module and an energy storage module electrically connected to the main control module. The main control module includes a power supply output terminal. The first switch module is electrically connected to the power supply output terminal of the main control module and the charging output pin. The trigger terminal of the first switch module is electrically connected to the feedback pin. The first switch module is turned on when a camera is connected to the camera interface and turned off when a camera is not connected to the camera interface.

4. The charging box circuit according to claim 2, characterized in that, The camera interface also includes an indicator light power supply pin, and the charging box circuit also includes a second switch module. One connection terminal of the second switch module is electrically connected to the power supply pin of the peripheral interface, and the other connection terminal is electrically connected to the indicator light power supply pin. The trigger terminal of the second switch module is electrically connected to the feedback pin. The second switch module is turned on when the camera interface is connected to a camera and the peripheral interface is connected to an external device, and turned off when the camera interface is not connected to a camera or the peripheral interface is not connected to an external device.

5. The charging box circuit according to claim 2, characterized in that, The first switching control module includes an SGM7227 and a switching unit. The S pin and VCC pin of the SGM7227 are electrically connected. The VCC pin is electrically connected to the power supply pin of the peripheral interface or the power supply output terminal of the main control module through a resistor of a first resistance value. The VCC pin is also grounded through another resistor of a first resistance value. One end of the switching unit is electrically connected to the S pin, and the other end is grounded through a resistor of a second resistance value. The trigger terminal of the switching unit is electrically connected to the feedback pin, wherein the second resistance value is less than the first resistance value.

6. The charging box circuit according to claim 1, characterized in that, The camera interface also includes a communication pin pair, and the main control module is electrically connected to the communication pin pair to communicate with the camera through the communication pin pair; And / or, The charging box circuit also includes a power supply switching module, which is electrically connected to the main control module and the peripheral interface. The power supply switching module includes an output terminal that is electrically connected to the charging output pin. When an external device is connected to the peripheral interface, the power supply switching module switches its output terminal to be connected to the power supply pin of the peripheral interface, and when no external device is connected to the peripheral interface, it switches its output terminal to be connected to the power supply output terminal of the main control module. And / or, The camera interface is a POGOPIN interface.

7. The charging box circuit according to any one of claims 1 to 6, characterized in that, The peripheral interface is a Type-C interface or a Lightning interface. The peripheral interface includes two pairs of second differential signal pins symmetrically arranged on both sides of it. Both pairs of second differential signal pins are electrically connected to the first switching control module.

8. The charging box circuit according to any one of claims 1 to 6, characterized in that, The charging box circuit also includes a second switching control module and a positive / negative insertion identification module. The camera interface also includes a first ultra-high-speed data transmission channel. The peripheral interface is a Type-C interface and also includes a second ultra-high-speed data transmission channel and a third ultra-high-speed data transmission channel, as well as CC1 and CC2 pins. The second switching control module is electrically connected to the first ultra-high-speed data transmission channel of the camera interface, the second ultra-high-speed data transmission channel of the peripheral interface, and the third ultra-high-speed data transmission channel, respectively. The reversible insertion identification module is electrically connected to the second switching control module, the CC1 pin, and the CC2 pin. The reversible insertion identification module outputs a corresponding direction control signal to the second switching control module according to the level state of the CC1 pin and the CC2 pin. The second switching control module connects the first ultra-high-speed data transmission channel of the camera interface to the second ultra-high-speed data transmission channel or the third ultra-high-speed data transmission channel of the peripheral interface according to the direction control signal, so as to adapt to the reversible insertion direction of the peripheral interface.

9. The charging box circuit according to claim 8, characterized in that, The second switching control module includes an AW3410S. The positive / negative insertion identification module is electrically connected to the SEL pin of the AW3410S to output the direction control signal to the SEL pin.

10. A shooting device, characterized in that, It includes the charging case circuit as described in any one of claims 1 to 9, or includes a camera and the charging case circuit as described in any one of claims 1 to 9.

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