Camera control box circuit, camera control box and shooting equipment

Abstract

The utility model discloses a camera control box circuit, a camera control box and shooting equipment, and the camera control box circuit comprises a first Type-C interface which is electrically connected with power supply equipment; the power supply output interface is electrically connected with the camera module; the input end of the first voltage reduction module is electrically connected with a VBUS pin of the first Type-C interface, and the output end of the first voltage reduction module is electrically connected with the power supply output interface; and the PD decoy module is electrically connected with the first Type-C interface so as to be in protocol communication with the power supply equipment. According to the technical scheme, the cost and the weight of the camera control box are reduced.

Description

Technical Field

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

[0002] Currently, shooting equipment has gradually become a common device in people's lives. For example, action cameras are becoming increasingly widely used. Users use action cameras to capture and record travel scenery, daily life, etc. The camera module of an action camera (which may include the camera body and gimbal) usually requires a voltage greater than 5V (such as 9V or 12V) to operate. However, when the power supply device (power bank or adapter) is directly connected to the camera module, it defaults to outputting a 5V voltage, which is insufficient for the camera module's operating voltage. The existing solution is to set up a battery in the camera control box. The power supply device charges the battery in the camera control box through an interface, and then the battery outputs power to the camera module. This solution increases the cost and weight of the camera control box. Utility Model Content

[0003] This invention provides a camera control box circuit, a camera control box, and an imaging device, aiming to reduce the cost and weight of the camera control box.

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

[0005] The first Type-C interface is used for electrical connection to power supply equipment;

[0006] Power output interface for electrical connection to the camera module;

[0007] The first step-down module has its input terminal electrically connected to the VBUS pin of the first Type-C interface, and its output terminal electrically connected to the power supply output interface.

[0008] A PD decoy module is electrically connected to the first Type-C interface to communicate with the power supply device via protocol.

[0009] In some embodiments, the camera control box circuit further includes:

[0010] The power management module includes a voltage input terminal, an enable terminal, a normally open first voltage output terminal, and multiple second voltage output terminals;

[0011] The main control chip includes a power control unit and multiple power supply pins. The first voltage output terminal is electrically connected to the power control unit to supply power to the power control unit. The multiple power supply pins are electrically connected to the multiple second voltage output terminals one by one. The power control unit is electrically connected to the enable terminal of the power management module to control the output of the multiple second voltage output terminals to turn on and off.

[0012] The second step-down module has its input terminal electrically connected to the VBUS pin of the first Type-C interface, and its output terminal electrically connected to the voltage input terminal of the power management module.

[0013] In some embodiments, the plurality of second voltage output terminals output voltages of different magnitudes.

[0014] In some embodiments, the camera control box circuit further includes a second Type-C interface, and the main control chip further includes a USB 2.0 unit. The VBUS pin of the second Type-C interface is electrically connected to the voltage input terminal of the power management module, and the D+ and D- pins of the second Type-C interface are electrically connected to the USB 2.0 unit to transmit data with the USB 2.0 unit.

[0015] In some embodiments, a diode is connected in series between the VBUS pin of the second Type-C interface and the voltage input terminal of the power management module, and the anode of the diode is electrically connected to the VBUS pin of the second Type-C interface.

[0016] In some embodiments, the PD deception module includes an HUSB238 chip, the VIN pin of which is electrically connected to the VBUS pin of the first Type-C interface, and the D+, D-, CC1, and CC2 pins of the HUSB238 chip are correspondingly electrically connected to the D+, D-, CC1, and CC2 pins of the first Type-C interface.

[0017] In some embodiments, the ISET pin of the HUSB238 chip is grounded via a first resistor, and / or the VSET pin of the HUSB238 chip is grounded via a second resistor;

[0018] Alternatively, the ISET pin of the HUSB238 chip is grounded via a first resistor, and the VSET pin of the HUSB238 chip is grounded via a second resistor. The first resistor is 4.53KΩ, 7.5KΩ, 10.5KΩ, 13.7KΩ, 16.5KΩ, 19.6KΩ, or 22.6KΩ, and the second resistor is 6.04KΩ, 10KΩ, 14KΩ, or 17.8KΩ.

[0019] In some embodiments, the ISET pin of the HUSB238 chip is left floating, and / or the VSET pin of the HUSB238 chip is left floating.

[0020] This utility model also proposes a camera control box, including a camera control box circuit, wherein the camera control box circuit includes:

[0021] The first Type-C interface is used for electrical connection to power supply equipment;

[0022] Power output interface for electrical connection to the camera module;

[0023] The first step-down module has its input terminal electrically connected to the VBUS pin of the first Type-C interface, and its output terminal electrically connected to the power supply output interface.

[0024] A PD decoy module is electrically connected to the first Type-C interface to communicate with the power supply device via protocol.

[0025] This utility model also proposes a shooting device, including a camera module, a power supply device and the aforementioned camera control box, wherein the first Type-C interface is electrically connected to the power supply device, and the power output interface is electrically connected to the camera module to supply power to the camera module.

[0026] The technical solution of this utility model's camera control box circuit includes a first Type-C interface for electrically connecting to a power supply device, a power output interface for electrically connecting to a camera module, a first step-down module, and a PD decoy module. The input terminal of the first step-down module is electrically connected to the VBUS pin of the first Type-C interface, and the output terminal of the first step-down module is electrically connected to the power output interface. The PD decoy module is electrically connected to the first Type-C interface. Through the PD decoy module, the first Type-C interface communicates with the power supply device via a protocol, causing the power supply device to output a voltage exceeding 5V (such as 9V, 12V, or 15V) through a pre-defined PD protocol. Consequently, the input terminal of the first step-down module receives an input voltage exceeding 5V. Thus, the first step-down module can step down the received voltage and directly supply it to the camera module through the power output interface, enabling the camera module to operate normally. Compared to existing technologies that require adding a battery to the camera control circuit, this utility model eliminates the need for a battery, reducing the cost and weight of the camera control box, and also reducing the required size of the camera control box, making it lighter, more compact, and easier to install and carry. Attached Figure Description

[0027] Figure 1 This is a circuit module diagram of one embodiment of the camera charging box circuit of this utility model;

[0028] Figure 2 This is a circuit module diagram of one embodiment of the camera charging box circuit of this utility model;

[0029] Figure 3 This is a circuit module diagram of one embodiment of the camera charging box circuit of this utility model;

[0030] Figure 4 This is a circuit module diagram of one embodiment of the camera charging box circuit of this utility model. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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 those features. 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. If 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.

[0035] Currently, shooting equipment has gradually become a common device in people's lives. For example, action cameras are becoming increasingly widely used. Users use action cameras to capture and record travel scenery, daily life, etc. The camera module of an action camera (which may include the camera lens and gimbal) usually requires a voltage greater than 5V (such as 9V or 12V) to operate. However, when the power supply device (power bank or adapter) is directly connected to the camera module, it defaults to outputting a 5V voltage, which is insufficient for the camera module's operating voltage. The existing solution is to set up a battery in the camera control box. The power supply device charges the battery in the camera control box through an interface, and then the battery outputs power to the camera module. This existing solution increases the cost and weight of the camera control box.

[0036] To address the aforementioned problems with camera control boxes, the applicant of this utility model proposes a new camera control box circuit that can effectively reduce the cost and weight of the camera control box. This camera control box circuit is primarily applied to camera control boxes in camera equipment.

[0037] In this embodiment, the camera control box circuit 100 includes a first Type-C interface 10, a power output interface 20, a first step-down module 30, and a PD (PowerDelivery) decoy module 40.

[0038] The first Type-C interface 10 is used to electrically connect to the power supply device 200, which may be, for example, a power bank, a power adapter, etc.

[0039] The power output interface 20 is used to electrically connect to the camera module 300 to provide power for the operation of the camera module 300; wherein, the camera module 300 may include the camera lens, the camera gimbal, etc.

[0040] The first step-down module 30 has an input terminal and an output terminal. The input terminal of the first step-down module 30 is electrically connected to the VBUS pin 11 of the first Type-C interface 10, and the output terminal of the first step-down module 30 is electrically connected to the power supply output interface 20.

[0041] The PD decoy module 40 is electrically connected to the first Type-C interface 10 to communicate with the power supply device 200 via protocol.

[0042] In this embodiment, the camera control box circuit 100 adds a PD decoy module 40 electrically connected to the first Type-C interface 10. This allows the PD decoy module 40 to communicate with the power supply device 200 via the first Type-C interface 10 to agree on a PD protocol. As a result, the power supply device 200 outputs a voltage exceeding 5V according to the PD protocol agreed upon with the PD decoy module 40 (i.e., the VBUS pin 11 of the first Type-C interface 10 outputs a voltage exceeding 5V). For example, the power supply device 200 outputs voltages of 9V, 12V, 15V, 18V, 20V, etc., according to the PD protocol agreed upon with the PD decoy module 40. Thus, the input terminal of the first step-down module 30 can receive the voltage (such as 9V, 12V or 15V) output by the power supply device 200 according to the PD protocol from the VBUS pin 11 of the first Type-C interface 10, and then step down the voltage received from the VBUS pin 11 of the first Type-C interface 10 to the operating voltage required by the camera module 300 (e.g. 7.8V), so that the camera module 300 can work normally.

[0043] The technical solution of the camera control box circuit 100 in this embodiment includes a first Type-C interface 10 for electrically connecting to the power supply device 200, a power supply output interface 20 for electrically connecting to the camera module 300, a first step-down module 30, and a PD decoy module 40. The input terminal of the first step-down module 30 is electrically connected to the VBUS pin 11 of the first Type-C interface 10, and the output terminal of the first step-down module 30 is electrically connected to the power supply output interface 20. The PD decoy module 40 is electrically connected to the first Type-C interface 10. Through the PD decoy module 40, the first Type-C interface 10 and the power supply device 200 communicate via protocol, so that the power supply device 200 outputs a voltage exceeding 5V (such as 9V, 12V, or 15V) through the agreed PD protocol. As a result, the input voltage received by the input terminal of the first step-down module 30 exceeds 5V. Thus, the first step-down module 30 can step down the received voltage and directly supply it to the camera module 300 through the power supply output interface 20, so that the camera module 300 can work normally. Compared to existing technologies that require adding a battery to the camera control circuit, the technical solution of this embodiment eliminates the need for a battery, reducing the cost and weight of the camera control box. It also reduces the required size of the camera control box, making it lighter, more compact, and easier to install and carry.

[0044] The first buck module 30 can employ a buck switching stabilizer to maintain a stable output voltage, thereby ensuring stable operation of the camera module 300. The buck switching stabilizer can be, for example, an MP9943GQ chip, or other chips with the same function.

[0045] Reference Figure 2 and Figure 3 In some embodiments, the camera control box circuit 100 further includes a power management module 50, a main control chip 70, and a second buck module 60.

[0046] The power management module 50 includes a voltage input terminal 51, an enable terminal 52, a normally open first voltage output terminal 53, and multiple second voltage output terminals 54. The first voltage output terminal 53 outputs voltage whenever there is a voltage input to the power management module 50, regardless of the control of the enable terminal 52.

[0047] The main control chip 70 includes a power control unit 71 and multiple power supply pins 72. A first voltage output terminal 53 is electrically connected to the power control unit 71 to supply power to the power control unit 71. The multiple power supply pins 72 are electrically connected one-to-one with multiple second voltage output terminals 54. The power control unit 71 is electrically connected to the enable terminal 52 of the power management module to control the output of the multiple second voltage output terminals 54 to turn on and off. In some embodiments, the multiple second voltage output terminals 54 can output different voltages, such as 0.9V, 1.5V, 1.8V, and 3.0V respectively, to supply different power supply pins 72 of the main control chip 70, so as to serve as different power supplies (e.g., including core power supply, memory power supply, I / O port power supply, etc.).

[0048] The input terminal of the second step-down module 60 is electrically connected to the VBUS pin 11 of the first Type-C interface 10, and the output terminal of the second step-down module 60 is electrically connected to the voltage input terminal 51 of the power management module 50.

[0049] In this embodiment, the second step-down module 60 receives the voltage (e.g., 9V, 12V, etc.) output by the power supply device 200 according to the PD protocol from the VBUS pin 11 of the first Type-C interface 10, steps down the received voltage to a specified voltage (e.g., 4.8V), and outputs it to the input terminal of the power management module 50. After receiving the voltage output by the second step-down module 60, the power management module 50 outputs a preset voltage (e.g., 1.8V) from its first voltage output terminal 53 to the power control unit 71 of the main control chip 70. The power control unit 71 then starts working and controls the output of the corresponding signal to the enable terminal 52 of the power management module 50, so that the power management module 50 turns on the output of each second voltage output terminal 54 to provide voltage to each power supply pin 72 of the main control chip 70. Thus, each power supply pin 72 of the main control chip 70 supplies power to the corresponding device part, enabling the camera control box to start working normally.

[0050] The power control unit 71 of the main control chip 70 can control the power management chip to turn off the output of each second voltage output terminal 54 by controlling the electrical signal of the enable terminal 52 of the power management module 50, thereby disconnecting the power supply of each power supply pin 72 of the main control chip 70.

[0051] The second buck module 60 can be a single-output buck converter, such as the SY8623 chip; alternatively, it can be any other chip with the same function. The power management module 50 can be an I2225 chip or another chip with the same function.

[0052] The main control chip 70 can be the SOC of the camera control box circuit 100, such as the V39M.

[0053] Although the technical solution of this embodiment increases the voltage of the VBUS pin 11 of the first Type-C interface 10 to more than 5V through the PD deception module 40, the voltage can still be reduced to the level required by the main control chip 70 and the power management module 50 through the step-down processing of the second step-down module 60, without affecting the normal operation of the main control chip 70 and the power management module 50.

[0054] Reference Figure 3 In some embodiments, the camera control box circuit 100 further includes a second Type-C interface 80 for connecting an external device 400 (e.g., a programming device, a storage device, etc.). The main control chip 70 also includes a USB 2.0 unit 73. The VBUS pin 81 of the second Type-C interface 80 is electrically connected to the voltage input terminal 51 of the power management module 50, and the D+ and D- pins of the second Type-C interface 80 are electrically connected to the USB 2.0 unit 73 for data transmission.

[0055] In this embodiment, external devices 400, such as storage devices or programming devices, can be connected to the second Type-C interface 80 to transmit data with the USB 2.0 unit 73 of the main control chip 70. This enables the programming device to program the main control chip 70, or to transmit photo data, video data, and other data between the storage device and the camera control box. When the external device 400 is connected to the second Type-C interface 80, if the first Type-C interface 10 is not connected to a power supply device 200, the external device 400 can supply power to the power management module 50 through the VBUS pin 81 of the second Type-C interface 80. The power management module 50 then supplies power to the main control chip 70 and related devices through the first voltage output terminal 53 and various second voltage output terminals 54, enabling the camera control box to perform data transmission normally.

[0056] In some embodiments, a diode is connected in series between the VBUS pin 81 of the second Type-C interface 80 and the voltage input terminal 51 of the power management module 50. The anode of the diode is electrically connected to the VBUS pin 81 of the second Type-C interface 80, that is, the diode conducts unidirectionally from the VBUS pin 81 of the second Type-C interface 80 to the voltage input terminal 51 of the power management module 50. In this way, when the power supply device 200 is connected to the first Type-C interface 10 and the external device 400 is connected to the second Type-C interface 80, the voltage output by the step-down module 60 is prevented from being output from the VBUS pin 81 of the second Type-C interface 80 to the external device 400, so that the power supply device 200 can maintain a longer power supply time.

[0057] Reference Figure 4 In some embodiments, the PD decoy module 40 includes an HUSB238 chip 41. The VIN pin 411 of the HUSB238 chip 41 is electrically connected to the VBUS pin 11 of the first Type-C interface 10, and the D+, D-, CC1, and CC2 pins of the HUSB238 chip 41 are correspondingly electrically connected to the D+, D-, CC1, and CC2 pins of the first Type-C interface 10. The HUSB238 is a highly integrated USB PD receiving end chip (PDSink, also called a PD decoy chip) with a rated power transmission of up to 100W. It is compatible with PD3.0V1.3 and Type-CV1.4, and it can also support charging protocols such as BC1.2DCP, CDP, and SDP.

[0058] In this embodiment, the HUSB238 chip 41 is powered through the VBUS pin 11 of the first Type-C interface 10. The HUSB238 chip 41 communicates and agrees on protocols with the device connected to the first Type-C interface 10 through the D+, D-, CC1, and CC2 pins. By using the HUSB238 chip 41, the output of the VBUS pin of the first Type-C interface 10 can meet various voltage requirements, and the required voltage can be set according to needs, thereby supporting the power supply of different camera modules 300.

[0059] In some embodiments, the ISET pin 412 of the HUSB238 chip 41 is grounded via a first resistor R1. The first resistor R1 is used to set the current output, specifically the current output of the VBUS pin 11 of the first Type-C interface 10. For example, the first resistor R1 can be 4.53KΩ, 7.5KΩ, 10.5KΩ, 13.7KΩ, 16.5KΩ, 19.6KΩ, or 22.6KΩ, corresponding to output currents of 1.5A, 1.75A, 2A, 2.25A, 2.5A, 2.75A, and 3A for the first Type-C interface 10. In some embodiments, the VSET pin 413 of the HUSB238 chip 41 is grounded via a second resistor R2. The second resistor R2 is used to set the voltage output, specifically the voltage output of the VBUS pin 11 of the first Type-C interface 10. For example, the second resistor R2 can be 6.04KΩ, 10KΩ, 14KΩ, or 17.8KΩ, corresponding to output voltages of 9V, 12V, 15V, and 18V for the VBUS pin 11 of the first Type-C interface 10, respectively. Users can select the values ​​of the first resistor R1 and the second resistor R2 according to specific power requirements; for example, if the first resistor R1 is 10.5KΩ and the second resistor R2 is 10KΩ, the output power of the VUBS pin of the first Type-C interface 10 will be 24W.

[0060] In some embodiments, the ISET pin 412 of the HUSB238 chip 41 can be left floating. In this case, the HUSB238 chip 41 recognizes all PD protocols of the power supply device 200, and the VBUS pin 11 of the first Type-C interface 10 outputs according to the maximum output current that the power supply device 200 can output.

[0061] In some embodiments, the VSET pin 413 of the HUSB238 chip 41 can be left floating. In this case, the HUSB238 chip 41 recognizes all PD protocols of the power supply device 200, and the VBUS pin 11 of the first Type-C interface 10 outputs according to the maximum output voltage that the power supply device 200 can output.

[0062] Of course, in other embodiments, the PD decoy module 40 may also include other types of USBPD power receiving chips.

[0063] It should be noted that the above embodiments of this example can be freely combined to form new embodiments in the absence of contradictions and conflicts.

[0064] This utility model also proposes a camera control box, including the camera control box circuit described above. The specific structure of the camera control box circuit is as described in the above embodiments. Since this camera control box adopts all the technical solutions of all the embodiments of the camera control box circuit described above, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0065] This utility model also proposes a shooting device, including a camera module, a power supply device, and the aforementioned camera control box. The specific structure of the camera control box is as described in the above embodiments. Since this shooting device adopts all the technical solutions of all embodiments of the aforementioned camera control box, it at least has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here. The camera's first Type-C interface is electrically connected to the power supply device, and the power output interface is electrically connected to the camera module to supply power to the camera module.

[0066] 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 camera control box circuit, characterized in that, include: The first Type-C interface is used for electrical connection to power supply equipment; Power output interface for electrical connection to the camera module; The first step-down module has its input terminal electrically connected to the VBUS pin of the first Type-C interface, and its output terminal electrically connected to the power supply output interface. A PD decoy module is electrically connected to the first Type-C interface to communicate with the power supply device via protocol.

2. The camera control box circuit according to claim 1, characterized in that, The camera control box circuit also includes: The power management module includes a voltage input terminal, an enable terminal, a normally open first voltage output terminal, and multiple second voltage output terminals; The main control chip includes a power control unit and multiple power supply pins. The first voltage output terminal is electrically connected to the power control unit to supply power to the power control unit. The multiple power supply pins are electrically connected to the multiple second voltage output terminals one by one. The power control unit is electrically connected to the enable terminal of the power management module to control the output of the multiple second voltage output terminals to turn on and off. The second step-down module has its input terminal electrically connected to the VBUS pin of the first Type-C interface, and its output terminal electrically connected to the voltage input terminal of the power management module.

3. The camera control box circuit according to claim 2, characterized in that, The multiple second voltage output terminals each output a voltage of different magnitude.

4. The camera control box circuit according to claim 2, characterized in that, The camera control box circuit also includes a second Type-C interface, and the main control chip also includes a USB 2.0 unit. The VBUS pin of the second Type-C interface is electrically connected to the voltage input terminal of the power management module, and the D+ and D- pins of the second Type-C interface are electrically connected to the USB 2.0 unit to transmit data with the USB 2.0 unit.

5. The camera control box circuit according to claim 4, characterized in that, A diode is connected in series between the VBUS pin of the second Type-C interface and the voltage input terminal of the power management module, and the anode of the diode is electrically connected to the VBUS pin of the second Type-C interface.

6. The camera control box circuit according to any one of claims 1 to 5, characterized in that, The PD decoy module includes an HUSB238 chip. The VIN pin of the HUSB238 chip is electrically connected to the VBUS pin of the first Type-C interface, and the D+, D-, CC1, and CC2 pins of the HUSB238 chip are correspondingly electrically connected to the D+, D-, CC1, and CC2 pins of the first Type-C interface.

7. The camera control box circuit according to claim 6, characterized in that, The ISET pin of the HUSB238 chip is grounded through a first resistor, and / or the VSET pin of the HUSB238 chip is grounded through a second resistor; Alternatively, the ISET pin of the HUSB238 chip is grounded via a first resistor, and the VSET pin of the HUSB238 chip is grounded via a second resistor. The first resistor is 4.53KΩ, 7.5KΩ, 10.5KΩ, 13.7KΩ, 16.5KΩ, 19.6KΩ, or 22.6KΩ, and the second resistor is 6.04KΩ, 10KΩ, 14KΩ, or 17.8KΩ.

8. The camera control box circuit according to claim 6, characterized in that, The ISET pin of the HUSB238 chip is left floating, and / or the VSET pin of the HUSB238 chip is left floating.

9. A camera control box, characterized in that, Includes the camera control box circuit as described in any one of claims 1 to 8.

10. A shooting device, characterized in that, The device includes a camera module, a power supply device, and a camera control box as described in claim 9, wherein the first Type-C interface is electrically connected to the power supply device, and the power output interface is electrically connected to the camera module to supply power to the camera module.

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