USB3.0 high-definition loop-out 4K 60HZ audio and video acquisition card

Abstract

The utility model relates to the technical field of audio and video acquisition cards, in particular to a USB3.0 high-definition loop-out 4K60HZ audio and video acquisition card, which is characterized in that an acquisition circuit is connected with an HDMI audio and video circuit, the acquisition circuit comprises an audio and video processing circuit, the audio and video processing circuit is connected with a data receiving circuit, the HDMI audio and video circuit is connected with the data receiving circuit, and the data receiving circuit is connected with the USB 3.0 high-definition loop-out 4K60HZ audio and video acquisition card. The HDMI audio and video circuit is connected with a data transmitting circuit, the audio and video processing circuit is connected with a coding circuit, and the coding circuit is connected with a USB interface. Compared with the prior art, the USB 3.0 high-definition ring-out 4K 60HZ audio and video acquisition card provided by the utility model solves the problem of insufficient resolution of video ring-out, enables audio and video ring-out to reach an ultrahigh new view angle of 4K60Hz, is almost synchronous in acquisition, cannot be seen by naked eyes and has delay, and is beneficial to improving the use experience of a user.

Description

[Technical field]

[0001] The utility model relates to the technical field of audio and video capture cards, in particular to a USB3.0 high-definition loop-out 4K60HZ audio and video capture card. [Background technology]

[0002] The existing audio and video capture cards can generally only loop out 1080-resolution videos, which is difficult to meet user needs and affects the user experience. [Utility Model Content]

[0003] In order to overcome the above problems, the utility model proposes a USB3.0 high-definition loop-out 4K 60HZ audio and video capture card which can effectively solve the above problems.

[0004] The utility model provides a technical solution to solve the above technical problems: a USB3.0 high-definition loop-out 4K 60HZ audio and video capture card is provided, comprising an acquisition circuit and an HDMI audio and video circuit, the acquisition circuit and the HDMI audio and video circuit are connected; the acquisition circuit comprises an audio and video processing circuit, the audio and video processing circuit is connected to a data receiving circuit, the HDMI audio and video circuit is connected to the data receiving circuit, the HDMI audio and video circuit is connected to a data sending circuit; the audio and video processing circuit is connected to an encoding circuit, and the encoding circuit is connected to a USB interface.

[0005] Preferably, the acquisition circuit is connected to a Flash chip, and the model of the Flash chip is w25q40.

[0006] Preferably, the acquisition circuit is connected to an MCU circuit, and the MCU circuit is connected to an audio driving circuit and a DAC circuit.

[0007] Preferably, the HDMI audio and video circuit adopts a TW2012 model chip.

[0008] Preferably, the acquisition circuit uses a MS2131 chip.

[0009] Preferably, the MCU circuit adopts a US32VF030A5 chip.

[0010] Preferably, the audio driving circuit adopts a LK621 chip.

[0011] Preferably, the DAC circuit uses an ES8156 chip.

[0012] Compared with the prior art, the USB3.0 high-definition loop-out 4K 60HZ audio and video capture card of the utility model solves the problem of insufficient video loop-out resolution through the HDMI audio and video circuit, so that the audio and video loop-out can reach an ultra-high-tech viewing angle of 4K60Hz. The acquisition is almost synchronous, and the naked eye cannot see any delay at all, which is conducive to improving the user experience.

Brief Description of the Drawings

[0013] Figure 1 This is a framework diagram of the USB3.0 high-definition loop-out 4K 60HZ audio and video capture card of the utility model;

[0014] Figure 2 This is the frame diagram of the acquisition circuit of the USB3.0 high-definition loop-out 4K 60HZ audio and video acquisition card of the utility model;

[0015] Figure 3 This is the schematic diagram of the acquisition circuit of the USB3.0 high-definition loop-out 4K 60HZ audio and video acquisition card of the utility model;

[0016] Figure 4 This is the HDMI audio and video circuit schematic diagram of the utility model USB3.0 high-definition loop-out 4K 60HZ audio and video capture card;

[0017] Figure 5 This is the principle diagram of the Flash chip of the USB3.0 high-definition loop-out 4K 60HZ audio and video capture card of the utility model. [Specific implementation method]

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are limited to relative positions on the specified view rather than absolute positions.

[0020] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0021] See also Figures 1 to 5The utility model discloses a USB3.0 high-definition loop-out 4K 60HZ audio and video capture card, comprising a capture circuit and an HDMI audio and video circuit, wherein the capture circuit and the HDMI audio and video circuit are connected.

[0022] The acquisition circuit includes an audio and video processing circuit, the audio and video processing circuit is connected to a data receiving circuit, the HDMI audio and video circuit is connected to the data receiving circuit, and the HDMI audio and video circuit is connected to a data sending circuit.

[0023] The audio and video processing circuit is connected to a coding circuit, the coding circuit is connected to a USB interface, and the USB interface is a USB 3.0 interface.

[0024] The encoding circuit is used for USB Video Class 1.0 encoding, providing standardized drivers and communication protocols for video devices to achieve simple video transmission and compatibility, and transmitting HDMI input audio and video signals to PCs, smart phones, and tablet computers for preview or acquisition through the USB interface.

[0025] The utility model of the USB3.0 high-definition loop-out 4K 60HZ audio and video capture card solves the problem of insufficient video loop-out resolution through the HDMI audio and video circuit, so that the audio and video loop-out can reach an ultra-high-tech viewing angle of 4K60Hz. The acquisition is almost synchronous, and the naked eye cannot see any delay at all, which is conducive to improving the user experience.

[0026] The acquisition circuit is connected with a Flash chip, the model of the Flash chip is w25q40, and is used to program the audio acquisition function.

[0027] The acquisition circuit is connected to an MCU circuit, and the MCU circuit is connected to an audio driving circuit and a DAC circuit.

[0028] The acquisition circuit adopts the MS2131 chip.

[0029] The HDMI audio and video circuit adopts TW2012 model chip.

[0030] The MCU circuit adopts the US32VF030A5 chip.

[0031] The audio driving circuit adopts LK621 chip.

[0032] The DAC circuit adopts ES8156 chip.

[0033] Compared with the prior art, the USB3.0 high-definition loop-out 4K 60HZ audio and video capture card of the utility model solves the problem of insufficient video loop-out resolution through the HDMI audio and video circuit, so that the audio and video loop-out can reach an ultra-high-tech viewing angle of 4K60Hz. The acquisition is almost synchronous, and the naked eye cannot see any delay at all, which is conducive to improving the user experience.

[0034] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any modifications, equivalent substitutions and improvements made within the concept of the present invention should be included in the patent protection scope of the present invention.

Claims

1. USB3.0 high-definition loop-out 4K 60HZ audio and video capture card, characterized by: It includes an acquisition circuit and an HDMI audio and video circuit, and the acquisition circuit and the HDMI audio and video circuit are connected; The acquisition circuit includes an audio and video processing circuit, the audio and video processing circuit is connected to a data receiving circuit, the HDMI audio and video circuit is connected to the data receiving circuit, and the HDMI audio and video circuit is connected to a data sending circuit; The audio and video processing circuit is connected to a coding circuit, and the coding circuit is connected to a USB interface.

2. The USB3.0 high-definition loop-out 4K 60HZ audio and video capture card as claimed in claim 1, characterized in that: The acquisition circuit is connected to a Flash chip, and the model of the Flash chip is w25q40.

3. The USB3.0 high-definition loop-out 4K 60HZ audio and video capture card as claimed in claim 1, characterized in that: The acquisition circuit is connected to an MCU circuit, and the MCU circuit is connected to an audio driving circuit and a DAC circuit.

4. The USB3.0 high-definition loop-out 4K 60HZ audio and video capture card as claimed in claim 1, characterized in that: The HDMI audio and video circuit adopts TW2012 model chip.

5. The USB3.0 high-definition loop-out 4K 60HZ audio and video capture card as claimed in claim 1, characterized in that: The acquisition circuit adopts the MS2131 chip.

6. The USB3.0 high-definition loop-out 4K 60HZ audio and video capture card as claimed in claim 3, characterized in that: The MCU circuit adopts the US32VF030A5 chip.

7. The USB3.0 high-definition loop-out 4K 60HZ audio and video capture card as claimed in claim 3, characterized in that: The audio driving circuit adopts LK621 chip.

8. The USB3.0 high-definition loop-out 4K 60HZ audio and video capture card as claimed in claim 3, characterized in that: The DAC circuit adopts ES8156 chip.

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