Docking station circuit and docking station

Abstract

The utility model relates to a docking station circuit and a docking station, the docking station circuit comprises a first TypeC interface provided with a first TypeC power supply circuit and a first TypeC control circuit, a second TypeC interface provided with a second TypeC power supply circuit and a second TypeC input circuit, an MUX conversion circuit and an HDMI conversion circuit, the second TypeC input circuit is respectively connected with the MUX conversion circuit and the HDMI conversion circuit, and when a power supply module is powered on, the HDMI conversion circuit is connected with the first TypeC interface. When the first TypeC interface and the second TypeC interface are both inserted, the first TypeC interface and the second TypeC interface perform charging power division; and when the power supply module is not electrified and only the second TypeC interface is inserted, the second TypeC input circuit, the MUX conversion circuit and the HDMI conversion circuit only perform video conversion. By arranging the first TypeC power supply circuit and the second TypeC power supply circuit, charging power division is realized. And when the power supply module is not powered on and only the second TypeC interface is inserted, video conversion can still be carried out.

Description

Technical Field

[0001] This application relates to the technical field of docking stations, and specifically, to a docking station circuit and a docking station. Background Art

[0002] The Universal Serial Bus Association has released a new interface type of the Universal Serial Bus, namely Type-C, which can act as a USB interface, and can also be used as multiple interfaces such as video output and power supply. Type-C integrates charging, data transmission, and video output, and solves the defect that current mobile phones, tablet computers, etc. do not have a direct extended video port. A docking station, also known as a port replicator, is an external device designed specifically for laptop computers. By replicating and expanding the ports of a notebook computer, it enables the notebook computer to be connected to a variety of external devices, improving the portability of the notebook computer.

[0003] Currently, the functions of docking stations are few and the practicality is low, making it difficult to meet the multi-functional requirements such as charging, data transmission, and high-definition video transmission. Therefore, it is necessary to propose a circuit for a docking station to at least partially solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of this application is to provide a docking station circuit and a docking station to solve the problem that existing docking stations are difficult to meet multiple requirements such as charging, data transmission, and high-definition video transmission.

[0005] To solve the above problems, this application is implemented by adopting the following technical solutions:

[0006] In the first aspect of this application, a docking station circuit is provided. The docking station circuit is connected to a power supply module. The docking station circuit includes: a first Type-C interface provided with a first Type-C power circuit and a first Type-C control circuit, a second Type-C interface provided with a second Type-C power circuit and a second Type-C input circuit, a MUX conversion circuit, and an HDMI conversion circuit. The first Type-C power circuit and the second Type-C power circuit are both connected to the power supply module. The first Type-C power circuit is connected to the first Type-C control circuit. The second Type-C power circuit is connected to the second Type-C input circuit. The second Type-C input circuit is respectively connected to the MUX conversion circuit and the HDMI conversion circuit. Among them, when the power supply module is powered on and both the first Type-C interface and the second Type-C interface are inserted, the first Type-C interface and the second Type-C interface perform charging power shunting; when the power supply module is not powered on and only the second Type-C interface is inserted, the second Type-C input circuit, the MUX conversion circuit, and the HDMI conversion circuit only perform video conversion.

[0007] Further, the second Type-C power circuit includes a second power controller and an overcurrent protection circuit. The second power controller is respectively connected to the power module and one end of the overcurrent protection circuit, and the other end of the overcurrent protection circuit is connected to the second Type-C input circuit.

[0008] Further, the overcurrent protection circuit includes a plurality of protection capacitors. The plurality of protection capacitors are arranged in parallel. One ends of the plurality of protection capacitors are all grounded, and the other ends of the plurality of protection capacitors are connected to the second power controller.

[0009] Further, the HDMI conversion circuit includes a crystal oscillator circuit and an HDMI conversion chip. One end of the crystal oscillator circuit is grounded, and the other end of the crystal oscillator circuit is connected to the HDMI conversion chip.

[0010] Further, the HDMI conversion circuit further includes a first RC circuit. The first RC circuit is respectively connected to the HDMI conversion chip and the MUX conversion circuit.

[0011] Further, the first RC circuit is provided with a first resistor and a first capacitor. The MUX conversion circuit, the first resistor, the first capacitor and the HDMI conversion chip are connected in sequence.

[0012] Further, the HDMI conversion circuit includes an impedance circuit. One end of the impedance circuit is powered, and the other end of the impedance circuit is connected to the HDMI conversion chip.

[0013] Further, the impedance circuit is provided with two second resistors. The two second resistors are arranged in parallel, and the two second resistors are respectively connected to two pins of the HDMI conversion chip.

[0014] Further, the MUX conversion circuit includes a MUX conversion chip and a second RC circuit. The MUX conversion chip is respectively connected to the second RC circuit and the HDMI conversion circuit, and one end of the second RC circuit is grounded.

[0015] The present application also proposes a docking station, including the docking station circuit described in any one of the above.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows: When the power module is powered on and both the first Type-C interface and the second Type-C interface are inserted, the charging power of the first Type-C interface and the second Type-C interface is shunted, improving the charging efficiency. When the power module is not powered on and only the second Type-C interface is inserted, video conversion can still be performed, meeting the user's usage requirements in the case of no power supply, so that the docking station circuit can meet the functions of charging, data transmission, and high-definition video transmission. Description of the Drawings

[0017] Figure 1 Schematic diagram of a first Type-C power circuit provided by an embodiment of the present application;

[0018] Figure 2 Schematic diagram of a first Type-C control circuit provided by an embodiment of the present application;

[0019] Figure 3 Schematic diagram of a second Type-C power circuit provided by an embodiment of the present application;

[0020] Figure 4 Schematic diagram of a second Type-C input circuit provided by an embodiment of the present application;

[0021] Figure 5 Schematic diagram of a MUX conversion circuit provided by an embodiment of the present application; and

[0022] Figure 6 Schematic diagram of an HDMI conversion circuit provided by an embodiment of the present application.

[0023] Description of the Reference Numerals:

[0024] 100, first Type-C power circuit; 200, first Type-C control circuit; 300, second Type-C power circuit; 310, second power controller; 320, overcurrent protection circuit; 321, protection capacitor; 400, second Type-C input circuit; 500, MUX conversion circuit; 510, MUX conversion chip; 520, second RC circuit; 600, HDMI conversion circuit; 610, crystal oscillator circuit; 620, HDMI conversion chip; 630, first RC circuit; 631, first resistor; 632, first capacitor; 640, impedance circuit; 641, second resistor. Detailed Description of the Embodiments

[0025] The following describes in detail the specific embodiments of the present application with reference to the drawings.

[0026] It should be noted that, without conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other. The detailed description in the specific embodiments should be understood as an explanatory illustration of the gist of the present application and should not be regarded as an improper limitation of the present application.

[0027] It should be understood that the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. These orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0028] As a multifunctional peripheral expansion solution, the docking station is designed to provide additional connection options for mobile computing devices, including but not limited to video output, high-speed data transmission, and power supply. With the popularity of remote work, as the peripheral expansion center of laptops, the docking station needs to provide sufficient power support while ensuring video quality to adapt to different working environments and device requirements.

[0029] Currently, laptop bodies are becoming thinner and lighter. To save internal space in the body, many interfaces are discarded. To meet different office needs, the docking station needs to integrate functions such as plug-in charging, data transmission, video output, and signal conversion.

[0030] Figure 1 Schematic diagram of a first Type-C power circuit provided by an embodiment of the present application Figure 2 Schematic diagram of a first Type-C control circuit provided by an embodiment of the present application Figure 3 Schematic diagram of a second Type-C power circuit provided by an embodiment of the present application Figure 4 Schematic diagram of a second Type-C input circuit provided by an embodiment of the present application Figure 5 Schematic diagram of a MUX conversion circuit provided by an embodiment of the present application Figure 6 Schematic diagram of an HDMI conversion circuit provided by an embodiment of the present application. As Figures 1 to 6 As shown, an embodiment of the present application provides a docking station circuit. The docking station circuit is connected to a power module. The docking station circuit includes: a first Type-C interface provided with a first Type-C power circuit 100 and a first Type-C control circuit 200, a second Type-C interface provided with a second Type-C power circuit 300 and a second Type-C input circuit 400, a MUX conversion circuit 500, and an HDMI conversion circuit 600. Both the first Type-C power circuit 100 and the second Type-C power circuit 300 are connected to the power module. The first Type-C power circuit 100 is connected to the first Type-C control circuit 200. The second Type-C power circuit 300 is connected to the second Type-C input circuit 400. The second Type-C input circuit 400 is respectively connected to the MUX conversion circuit 500 and the HDMI conversion circuit 600. Among them, when the power module is powered on and both the first Type-C interface and the second Type-C interface are inserted, the charging power is shunted between the first Type-C interface and the second Type-C interface; when the power module is not powered on and only the second Type-C interface is inserted, only video conversion is performed on the second Type-C input circuit 400, the MUX conversion circuit 500, and the HDMI conversion circuit 600.

[0031] Specifically, the docking station circuit is electrically connected to the power module to ensure stable and reliable power supply. When the first Type-C interface is inserted into a device, the first Type-C power circuit 100 starts to work, providing charging power for the device. At the same time, the first Type-C control circuit 200 starts to monitor the charging process to ensure charging safety. When the second Type-C interface is inserted into a device, the second Type-C power circuit 300 starts to work, providing charging power for the device. For example, when powered by the power module, when only the first Type-C interface is inserted into the device, the maximum power supply of the first Type-C power circuit 100 is 65W, and when only the second Type-C interface is inserted into the device, the maximum power supply of the second Type-C power circuit 300 is 65W. When the power module is powered on and both the first Type-C interface and the second Type-C interface are inserted, the charging power of the first Type-C interface and the second Type-C interface is shunted to provide charging for the main device and the small device respectively. For example, when the first Type-C interface and the second Type-C interface are both inserted into the device, the maximum power supply of the first Type-C power circuit 100 is 20W, and the maximum power supply of the second Type-C power circuit 300 is 45W.

[0032] The second Type-C input circuit 400 transmits the received video signal to the MUX conversion circuit 500. The MUX conversion circuit 500 determines which level of the CC1 and CC2 pins is pulled down, and the HDMI conversion circuit 600 notifies the MUX conversion circuit 500 to perform signal inversion through POL. The HDMI conversion circuit 600 converts the video signal selected by the MUX conversion circuit 500 into a high-definition video output for use by the display device. When the power module is not powered on and only the second Type-C interface is inserted, the second Type-C input circuit 400, the MUX conversion circuit 500, and the HDMI conversion circuit 600 only perform video conversion and do not charge.

[0033] By providing the first Type-C power circuit 100 and the second Type-C power circuit 300, charging power shunting is achieved, improving the charging efficiency. When the power module is not powered on and only the second Type-C interface is inserted, video conversion can still be performed, meeting the user's usage requirements in the absence of power.

[0034] In some embodiments, the second Type-C power circuit 300 includes a second power controller 310 and an overcurrent protection circuit 320. The second power controller 310 is respectively connected to the power module and one end of the overcurrent protection circuit 320, and the other end of the overcurrent protection circuit 320 is connected to the second Type-C input circuit 400.

[0035] Specifically, connect the second power controller 310 to one end of the power module and the overcurrent protection circuit 320 to ensure a stable and reliable power supply provided by the power module. The overcurrent protection circuit 320 monitors the current condition of the second Type-C input circuit 400. When the current exceeds the set threshold, the overcurrent protection circuit 320 will immediately activate the protection mechanism to cut off the power supply to prevent the device from being damaged due to overload. The second power controller 310 receives the power provided by the power module and adjusts and controls the output of the power according to the requirements of the second Type-C input circuit 400.

[0036] When the power current exceeds the set value, the overcurrent protection circuit 320 will operate to prevent device damage caused by excessive current, improving the safety of the product.

[0037] In some embodiments, the overcurrent protection circuit 320 includes a plurality of protection capacitors 321. The plurality of protection capacitors 321 are connected in parallel. One end of each of the plurality of protection capacitors 321 is grounded, and the other end of each of the plurality of protection capacitors 321 is connected to the second power controller 310.

[0038] Specifically, connect the plurality of protection capacitors 321 in parallel to ensure that one end of each of them is grounded and the other end is connected to the second power controller 310. When the current exceeds the set threshold, the protection capacitors 321 can help absorb the excessive current to protect the circuit safety. The protection capacitors 321 are mainly used to absorb the voltage fluctuations generated during the overcurrent moment to prevent voltage mutations from damaging the second power controller 310 and the second Type-C input circuit 400.

[0039] By adopting a plurality of protection capacitors 321 connected in parallel, when an overcurrent occurs in the circuit, these protection capacitors 321 can jointly bear the overcurrent, thereby reducing the voltage stress on a single capacitor and improving the overcurrent protection performance of the entire circuit and the stability of the circuit.

[0040] In some embodiments, the HDMI conversion circuit 600 includes a crystal oscillator circuit 610 and an HDMI conversion chip 620. One end of the crystal oscillator circuit 610 is grounded, and the other end of the crystal oscillator circuit 610 is connected to the HDMI conversion chip 620.

[0041] Specifically, ground one end of the crystal oscillator circuit 610 to ensure the stability of the circuit, and connect the other end to the HDMI conversion chip 620 to provide a stable clock signal for the HDMI conversion chip 620. Among them, the crystal oscillator circuit 610 is mainly used to generate a stable clock signal to provide an accurate time reference for the HDMI conversion chip 620. The HDMI conversion chip 620 can accurately perform video signal conversion and processing. After receiving the clock signal provided by the crystal oscillator circuit 610, the HDMI conversion chip 620 starts to perform video signal conversion. It converts the input video signal into an HDMI-compatible output signal.

[0042] By adopting a crystal oscillator circuit 610 to provide a stable clock signal for the HDMI conversion chip 620, the stability and accuracy of the conversion signal are effectively improved, thereby ensuring the clarity and stability of high-definition video transmission.

[0043] In some embodiments, the HDMI conversion circuit 600 further includes a first RC circuit 630, and the first RC circuit 630 is respectively connected to the HDMI conversion chip 620 and the MUX conversion circuit 500.

[0044] Specifically, the first RC circuit 630 is connected to the HDMI conversion chip 620 and the MUX conversion circuit 500. After receiving the clock signal provided by the crystal oscillator circuit, the HDMI conversion chip 620 starts to convert the video signal. It converts the input video signal into an HDMI-compatible output signal for use by the display device. It should be noted that the first RC circuit 630 (AUX channel) is used to transmit auxiliary information in the DisplayPort protocol. For example, the EDID information and DP configuration information of the receiving device, etc. Among them, the AUX signal requires AC coupling. Between the AC capacitor and the display interface, a resistor is needed to pull up AUX_N and pull down AUX_P. When the sink detects that AUX+ is at a low level, it means that the DP source is connected. When the sink detects that AUX- is at a high level, it means that the DP source has been powered on.

[0045] It should be noted that the signal quality and the image are related to the resolution and PCB traces. The first RC circuit 630 is used to read the EDID information (such as receiving capabilities).

[0046] In some embodiments, the first RC circuit 630 is provided with a first resistor 631 and a first capacitor 632, and the MUX conversion circuit 500, the first resistor 631, the first capacitor 632, and the HDMI conversion chip 620 are connected in sequence.

[0047] Specifically, in the first RC circuit 630, the first resistor 631 and the first capacitor 632 are connected in sequence. The first resistor 631 is used to limit the flow of current, while the first capacitor 632 is used to store charge and smooth voltage changes. The MUX conversion circuit 500 is first connected to the first resistor 631, then the first resistor 631 is connected to the first capacitor 632, and finally the first capacitor 632 is connected to the HDMI conversion chip 620. Such a connection sequence ensures the filtering and noise reduction processing of the video signal during transmission. When the video signal is output from the MUX conversion circuit 500, it first passes through the first resistor 631, which can limit the high-frequency noise in the signal. The signal passes through the first capacitor 632, and the function of the capacitor is to smooth voltage changes and further filter out the noise and interference in the signal.

[0048] Since the first RC circuit 630 includes a first resistor 631 and a first capacitor 632, the MUX conversion circuit 500, the first resistor 631, the first capacitor 632, and the HDMI conversion chip 620 are connected in sequence, capable of performing impedance matching and filtering on the signal, effectively reducing the noise during signal transmission, and improving the signal quality.

[0049] In some embodiments, the HDMI conversion circuit 600 includes an impedance circuit 640. One end of the impedance circuit 640 is powered, and the other end of the impedance circuit 640 is connected to the HDMI conversion chip 610.

[0050] Specifically, the second resistor 641 in the impedance circuit 640 is the pull-up of 3.3V for the IIC circuit and is connected below the U2 chip in the first TypeC control circuit 200. When TYPEC1 is inserted, the U2 chip notifies the HDMI conversion chip 620 to perform a power reduction operation. The second resistor 641 in the impedance circuit 640 can be NC'ed for GPIO communication. This is a compatibility design where either IIC or GPIO can be used. Pins 20 and 23 in the HDMI conversion chip 620 are connected to the second power controller 310 (chip) to pull up the IIC communication for controlling the output voltage and current of the second power controller 310 (chip).

[0051] In some embodiments, the impedance circuit 640 is provided with two second resistors 641. The two second resistors 641 are arranged in parallel and are respectively connected to two pins of the HDMI conversion chip 620.

[0052] Specifically, in the impedance circuit 640, two second resistors 641 are set and arranged in parallel. Each second resistor 641 is connected to a pin of the HDMI conversion chip 620. For example, pins 20 and 23 in the HDMI conversion chip 620 are connected to the second power controller 310 (chip).

[0053] In some embodiments, the MUX conversion circuit 500 includes a MUX conversion chip 510 and a second RC circuit 520. The MUX conversion chip 510 is respectively connected to the second RC circuit 520 and the HDMI conversion circuit 600. One end of the second RC circuit 520 is grounded.

[0054] Specifically, the MUX conversion circuit 500 includes a MUX conversion chip 510 and a second RC circuit 520. The MUX conversion chip 510 is respectively connected to the second RC circuit 520 and the HDMI conversion circuit 600 to form a closed circuit path. One end of the second RC circuit 520 is grounded to ensure the stability and safety of the circuit. Grounding can provide a reference potential and reduce noise and interference in the circuit. The MUX conversion chip 510 is responsible for selecting and processing the input video signal. The second RC circuit 520 is mainly used for filtering and denoising processing to remove noise and interference in the video signal and improve the quality and stability of the signal. The HDMI conversion circuit 600 is connected to the other end of the MUX conversion chip 510. When the power module is powered on, the video signal is selected and output through the MUX conversion circuit 500. After passing through the filtering and denoising processing of the second RC circuit 520, the signal is finally converted by the HDMI conversion circuit 600 to ensure the quality and stability of the output video signal.

[0055] By integrating the MUX conversion circuit 500, the input signal can be converted and processed, improving signal compatibility and expanding the application scope of the circuit.

[0056] The embodiment of the present application also proposes a docking station, including the docking station circuit of any one of the above.

[0057] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present application.

Claims

1. A docking station circuit, the docking station circuit is connected to a power module, characterized in that: The expansion dock circuit includes: a first TypeC interface provided with a first TypeC power circuit and a first TypeC control circuit, a second TypeC interface provided with a second TypeC power circuit and a second TypeC input circuit, a MUX conversion circuit and an HDMI conversion circuit, wherein the first TypeC power circuit and the second TypeC power circuit are both connected to the power module, the first TypeC power circuit is connected to the first TypeC control circuit, the second TypeC power circuit is connected to the second TypeC input circuit, and the second TypeC input circuit is respectively connected to the MUX conversion circuit and the HDMI conversion circuit, wherein when the power module is powered on and the first TypeC interface and the second TypeC interface are both inserted, the first TypeC interface and the second TypeC interface perform charging power diversion; when the power module is not powered on and only the second TypeC interface is inserted, the second TypeC input circuit, the MUX conversion circuit and the HDMI conversion circuit only perform video conversion.

2. The expansion dock circuit according to claim 1, characterized in that: The second Type C power supply circuit includes a second power supply controller and an overcurrent protection circuit. The second power supply controller is respectively connected to the power supply module and one end of the overcurrent protection circuit, and the other end of the overcurrent protection circuit is connected to the second Type C input circuit.

3. The expansion dock circuit according to claim 2, characterized in that: The overcurrent protection circuit includes a plurality of protection capacitors, which are arranged in parallel, one end of each of the protection capacitors is grounded, and the other end of each of the protection capacitors is connected to the second power controller.

4. The expansion dock circuit according to claim 1, characterized in that: The HDMI conversion circuit comprises a crystal oscillator circuit and an HDMI conversion chip. One end of the crystal oscillator circuit is grounded, and the other end of the crystal oscillator circuit is connected to the HDMI conversion chip.

5. The expansion dock circuit according to claim 4, characterized in that: The HDMI conversion circuit further includes a first RC circuit, and the first RC circuit is respectively connected to the HDMI conversion chip and the MUX conversion circuit.

6. The expansion dock circuit according to claim 5, characterized in that: The first RC circuit is provided with a first resistor and a first capacitor, and the MUX conversion circuit, the first resistor, the first capacitor and the HDMI conversion chip are connected in sequence.

7. The expansion dock circuit according to claim 4, characterized in that: The HDMI conversion circuit comprises an impedance circuit, one end of which is connected to electricity, and the other end of which is connected to the HDMI conversion chip.

8. The expansion dock circuit according to claim 7, characterized in that: The impedance circuit is provided with two second resistors, the two second resistors are arranged in parallel, and the two second resistors are respectively connected to two pins of the HDMI conversion chip.

9. The expansion dock circuit according to claim 1, characterized in that: The MUX conversion circuit includes a MUX conversion chip and a second RC circuit. The MUX conversion chip is connected to the second RC circuit and the HDMI conversion circuit respectively, and one end of the second RC circuit is grounded.

10. A docking station, characterized in that: Comprising the expansion dock circuit as described in any one of claims 1 to 9.

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