Multichannel video signal source real-time switching management circuit

Abstract

The utility model provides a multi-channel video signal source real-time switching management circuit which is characterized in that the output end of a power supply is in power supply connection with a power supply voltage adjusting circuit and a video signal display device, and the output end of the power supply voltage adjusting circuit is in power supply connection with a video signal processing main control circuit; the input end of the video signal processing main control circuit is connected with the output end of the video signal input interface 1, the output end of the video signal input interface 2, the output end of the video signal input interface 3 and the output end of the control key, and the output end of the video signal processing main control circuit is connected with the input end of the video signal display device. A main control chip U18 is arranged in the video signal processing main control circuit, and the model of the main control chip U18 is LQFP64. The beneficial effects of the utility model are that the system can achieve the automatic screening of an optimal video signal source from multiple paths of video signal sources, and the switching display of the optimal video signal source.

Description

Technical Field

[0001] This utility model relates to the field of video circuit technology, specifically to a real-time switching management circuit for multiple video signal sources. Background Technology

[0002] HDMI (High-Definition Multimedia Interface) video signal, also known as high-definition multimedia video signal, is the first digital interface to support the transmission of uncompressed, fully digital high-definition, multi-channel audio and intelligent format control command data over a single cable.

[0003] Currently, most video conferencing products support HDMI video signal source display. However, these products generally have the limitation of supporting only a single video signal source, and the number of video signal sources they can receive is limited. They also cannot flexibly switch between multiple viewing angles, meaning they cannot switch between different video signal sources in real time. Typically, existing video conferencing products can only display a single video signal source. Although they can receive multiple video signal sources simultaneously, such as those from multiple viewing angles, they can only display one at a time and cannot automatically select and switch to the optimal viewing angle in real time. Manual switching is required. Therefore, current video conferencing products on the market fail to meet users' needs for automatic real-time switching of video signal sources. Utility Model Content

[0004] To address the problems in existing technologies, this utility model provides a real-time switching management circuit for multiple video signal sources. By incorporating a power supply, a power voltage adjustment circuit, a main control circuit for video signal switching, video signal input interface 1, video signal input interface 2, video signal input interface 3, control buttons, and a video signal display device, this circuit enables automatic selection and switching of the optimal video signal source from multiple sources. Furthermore, the optimization of the main control circuit for video signal switching improves the quality and stability of the final output video signal source, thus solving the problem that existing video conferencing products on the market cannot meet user needs in terms of automatic real-time switching and display of video signal sources.

[0005] This utility model provides a real-time switching management circuit for multiple video signal sources, including a power supply, a power supply voltage adjustment circuit, a main control circuit for video signal switching, a video signal input interface 1, a video signal input interface 2, a video signal input interface 3, control buttons, and a video signal display device. The output terminal of the power supply is connected to the power supply voltage adjustment circuit and the video signal display device. The output terminal of the power supply voltage adjustment circuit is connected to the main control circuit for video signal processing. The input terminal of the main control circuit for video signal processing is connected to the output terminals of the video signal input interface 1, the video signal input interface 2, the video signal input interface 3, and the control buttons. The output terminal of the main control circuit for video signal processing is connected to the input terminal of the video signal display device. The main control circuit for video signal processing includes a main control chip U18, which is model LQFP64. The main control circuit for video signal processing can receive video signal sources input from the video signal input interface 1, the video signal input interface 2, and the video signal input interface 3, and automatically select the optimal video signal source for further noise reduction processing before outputting it to the video signal display device for display.

[0006] This utility model is further improved in that the main control chip U18 has 64 pins. Pins 5 and 35 of the main control chip U18 are connected to the output terminal of the power supply voltage adjustment circuit. Pins 21, 22, 24, 25, 27, 28, 30, and 31 of the main control chip U18 are connected to the output terminal of the video signal input interface 1. Pins 6, 7, 9, 10, 12, 13, 15, and 16 of the main control chip U18 are connected to the output terminal of the video signal input interface 2. Pins 50, 51, 53, 54, 56, 57, 59, and 60 of the main control chip U18 are connected to the output terminal of the video signal input interface 3. Pin 43 of the main control chip U18 is connected to the output terminal of the control button. Pins 18 and 19 of the main control chip U18 are connected to the input terminal of the video signal display device.

[0007] This utility model is further improved by including a voltage regulator chip U17, a fuse resistor FB12, a capacitor C181, and a capacitor C182 in the power supply voltage adjustment circuit. The voltage regulator chip U17 has 5 pins. The first pin of the voltage regulator chip U17 is connected to one end of the fuse resistor FB12, and the other end of the fuse resistor FB12 is connected to the output terminal of the power supply, which is a 5V constant voltage power supply. The fifth pin of the voltage regulator chip U17 is connected to one end of the capacitor C181, one end of the capacitor C182, and the fifth and third pins of the main control chip U18. The other ends of the capacitors C181 and C182 are grounded.

[0008] In a further improvement of this utility model, the video signal display device is provided with a video signal processing chip U19, which has 8 pins. The 8th pin of the video signal processing chip U19 is connected to the output terminal of the power supply, and the 5th and 6th pins of the video signal processing chip U19 are connected to the 19th and 18th pins of the main control chip U18, respectively.

[0009] This utility model is further improved in that the video signal input interface 1 includes an interface J21, which is an HDMI video signal interface. The interface J21 has 23 pins, and pins 12, 10, 9, 7, 6, 4, 3, and 1 of the interface J21 are respectively connected to pins 21, 22, 24, 25, 27, 28, 30, and 31 of the main control chip U18.

[0010] This utility model is further improved in that the video signal input interface 2 includes an interface J22, which is an HDMI video signal interface. The interface J22 has 23 pins, and pins 12, 10, 9, 7, 6, 4, 3, and 1 of the interface J22 are respectively connected to pins 6, 7, 9, 10, 12, 13, 15, and 16 of the main control chip U18.

[0011] This utility model is further improved in that the video signal input interface 1 includes an interface J23, which has 23 pins. The interface J23 is an HDMI video signal interface. Pins 12, 10, 9, 7, 6, 4, 3, and 1 of the interface J23 are respectively connected to pins 50, 51, 53, 54, 56, 57, 59, and 60 of the main control chip U18.

[0012] This utility model is further improved in that the voltage regulator chip U17 is model SOT-23-5 and the video signal processing chip U19 is model SOP8.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: It provides a multi-channel video signal source real-time switching management circuit. By setting up a power supply, power voltage adjustment circuit, video signal switching main control circuit, video signal input interface 1, video signal input interface 2, video signal input interface 3, control buttons, and video signal display device in the multi-channel video signal source real-time switching management circuit, the video signal processing main control circuit can receive video signal sources input from video signal input interface 1, video signal input interface 2, and video signal input interface 3, and automatically select the optimal video signal source for further noise reduction processing before outputting it to the video signal display device. It can realize the automatic selection and switching of the optimal video signal source among multiple video signal sources, which greatly improves the flexibility and practicality of video signal display. Moreover, through the optimization of the video signal switching main control circuit, the quality and stability of the final output video signal source are improved, greatly enhancing the user experience. It solves the problem that existing video conferencing products on the market cannot meet user needs in terms of automatic real-time switching and display of video signal sources. Attached Figure Description

[0014] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic block diagram of a multi-channel video signal source real-time switching management circuit according to the present invention;

[0016] Figure 2 This is a circuit diagram of the main control circuit for video signal processing of this utility model;

[0017] Figure 3 This is a circuit diagram of the power supply voltage adjustment circuit of this utility model;

[0018] Figure 4 This is a circuit diagram of the video signal display device of this utility model;

[0019] Figure 5 This is a circuit diagram of the video signal input interface 1 of this utility model;

[0020] Figure 6 This is a circuit diagram of the video signal input interface 2 of this utility model;

[0021] Figure 7 This is a circuit diagram of the video signal input interface 3 of this utility model. Detailed Implementation

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figures 1-7As shown, this utility model provides a real-time switching management circuit for multiple video signal sources, including a power supply, a power supply voltage adjustment circuit, a main control circuit for video signal switching, a video signal input interface 1, a video signal input interface 2, a video signal input interface 3, control buttons, and a video signal display device. The output terminal of the power supply is connected to the power supply voltage adjustment circuit and the video signal display device. The output terminal of the power supply voltage adjustment circuit is connected to the main control circuit for video signal processing. The input terminal of the main control circuit for video signal processing is connected to the output terminals of video signal input interface 1, video signal input interface 2, video signal input interface 3, and the control buttons. The output terminal of the main control circuit for video signal processing is connected to the input terminal of the video signal display device. The main control circuit for video signal processing includes a main control chip U18, which is model LQFP64. In this embodiment, the main control circuit for video signal processing can receive video signal sources from video signal input interface 1, video signal input interface 2, and video signal input interface 3, and automatically select the optimal video signal source for further noise reduction processing before outputting it to the video signal display device. This enables automatic selection and switching of the optimal video signal source among multiple video signal sources, significantly improving the flexibility and practicality of video signal display. Furthermore, the optimization of the main control circuit for video signal switching enhances the quality and stability of the final output video signal source, greatly improving the user experience.

[0026] like Figure 2As shown, the main control chip U18 has 64 pins. Pins 5 and 35 of the main control chip U18 are connected to the output of the power supply voltage adjustment circuit. Pins 21, 22, 24, 25, 27, 28, 30, and 31 of the main control chip U18 are connected to the output of video signal input interface 1. Pins 6, 7, 9, 10, 12, 13, 15, and 16 of the main control chip U18 are connected to the output of video signal input interface 2. Pins 50, 51, 53, 54, 56, 57, 59, and 60 of the main control chip U18 are connected to the output of video signal input interface 3. Pin 43 of the main control chip U18 is connected to the output of the control button. Pins 18 and 19 of the main control chip U18 are connected to the input of the video signal display device. In this embodiment, the main video signal processing control circuit receives video signal sources from video signal input interfaces 1, 2, and 3, and automatically selects the optimal video signal source for further noise reduction processing before outputting it to the video signal display device. Video signal input interfaces 1, 2, and 3 receive signals from different signal sources and transmit them to the main video signal processing control circuit. The main control circuit is responsible for decoding and format conversion of the input video signal sources to ensure signal compatibility and transmission quality. It then selects the optimal video signal source for further noise reduction processing before outputting it to the video signal display device. The main control chip U18 selects the signal source according to the control commands from the control buttons and supports automatic switching of the optimal signal source based on user commands or preset conditions (such as the signal source's access status, signal quality, or user-preset priority). This architecture features simple structure, fast response, and strong compatibility, making it suitable for various application scenarios.

[0027] like Figure 3 As shown, the power supply voltage adjustment circuit includes a voltage regulator chip U17, a fuse resistor FB12, capacitors C181 and C182. The voltage regulator chip U17 is an SOT-23-5 model with five pins. Pin 1 of the voltage regulator chip U17 is connected to one end of the fuse resistor FB12, and the other end of the fuse resistor FB12 is connected to the output terminal of the power supply, which is a 5V constant voltage power supply. Pin 5 of the voltage regulator chip U17 is connected to one end of capacitor C181, one end of capacitor C182, and pins 5 and 35 of the main control chip U18. The other ends of capacitors C181 and C182 are grounded. In this embodiment, the power supply voltage adjustment circuit is used to power the voltage regulator chip U17.

[0028] like Figure 4As shown, the video signal display device includes a video signal processing chip U19, model SOP8, with 8 pins. Pin 8 of the video signal processing chip U19 is connected to the output of the power supply, and pins 5 and 6 are connected to pins 19 and 18 of the main control chip U18, respectively. In this embodiment, the video signal display device is used to display the optimal video signal source transmitted from the main control circuit of the video signal processing.

[0029] like Figure 5-7 As shown, video signal input interface 1 includes interface J21, which is an HDMI video signal interface. Interface J21 has 23 pins, and pins 12, 10, 9, 7, 6, 4, 3, and 1 of interface J21 are connected to pins 21, 22, 24, 25, 27, 28, 30, and 31 of the main control chip U18, respectively. Video signal input interface 2 includes interface J22, which is also an HDMI video signal interface. Interface J22 has 23 pins, and pins 12, 10, 9, 7, 6, 4, 3, and 1 of interface J21 are connected to pins 21, 22, 24, 25, 27, 28, 30, and 31 of interface J21, respectively. Pins 12, 10, 9, 7, 6, 4, 3, and 1 are connected to pins 6, 7, 9, 10, 12, 13, 15, and 16 of the main control chip U18, respectively. Video signal input interface 1 includes interface J23, which has 23 pins. Interface J23 is an HDMI video signal interface, and pins 12, 10, 9, 7, 6, 4, 3, and 1 of interface J23 are connected to pins 50, 51, 53, 54, 56, 57, 59, and 60 of the main control chip U18, respectively. In this embodiment, video signal input interface 1, video signal input interface 2, and video signal input interface 3 are used to receive different video signal sources and transmit them to the main control circuit for video signal processing, such as video signal sources from different perspectives in a single scene during a video conference.

[0030] As can be seen from the above, this utility model provides a multi-channel video signal source real-time switching management circuit. By setting up a power supply, power voltage adjustment circuit, video signal switching main control circuit, video signal input interface 1, video signal input interface 2, video signal input interface 3, control buttons, and a video signal display device in the multi-channel video signal source real-time switching management circuit, the video signal processing main control circuit can receive video signal sources input from video signal input interface 1, video signal input interface 2, and video signal input interface 3, and automatically select the optimal video signal source for further noise reduction processing before outputting it to the video signal display device. This enables automatic selection and switching of the optimal video signal source among multiple video signal sources, significantly improving the flexibility and practicality of video signal display. Furthermore, the optimization of the video signal switching main control circuit improves the quality and stability of the final output video signal source, greatly enhancing the user experience and solving the problem that existing video conferencing products on the market cannot meet user needs in terms of automatic real-time switching and display of video signal sources.

[0031] The specific embodiments described above are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A real-time switching management circuit for multiple video signal sources, characterized in that: The system includes a power supply, a power voltage adjustment circuit, a main control circuit for video signal switching, video signal input interface 1, video signal input interface 2, video signal input interface 3, control buttons, and a video signal display device. The output of the power supply is connected to the power voltage adjustment circuit and the video signal display device. The output of the power voltage adjustment circuit is connected to the main control circuit for video signal processing. The input of the main control circuit is connected to the outputs of video signal input interface 1, video signal input interface 2, video signal input interface 3, and the control buttons. The output of the main control circuit is connected to the input of the video signal display device. The main control circuit includes a main control chip U18, model LQFP64. The main control circuit can receive video signal sources from video signal input interfaces 1, 2, and 3, automatically select the optimal video signal source, further process it with noise reduction, and then output it to the video signal display device for display.

2. The real-time switching management circuit for multiple video signal sources according to claim 1, characterized in that: The main control chip U18 has 64 pins. Pins 5 and 35 of the main control chip U18 are connected to the output of the power supply voltage adjustment circuit. Pins 21, 22, 24, 25, 27, 28, 30, and 31 of the main control chip U18 are connected to the output of the video signal input interface 1. Pins 6, 7, 9, 10, 12, 13, 15, and 16 of the main control chip U18 are connected to the output of the video signal input interface 2. Pins 50, 51, 53, 54, 56, 57, 59, and 60 of the main control chip U18 are connected to the output of the video signal input interface 3. Pin 43 of the main control chip U18 is connected to the output of the control button. Pins 18 and 19 of the main control chip U18 are connected to the input of the video signal display device.

3. The real-time switching management circuit for multiple video signal sources according to claim 2, characterized in that: The power supply voltage adjustment circuit includes a voltage regulator chip U17, a fuse resistor FB12, a capacitor C181, and a capacitor C182. The voltage regulator chip U17 has 5 pins. The first pin of the voltage regulator chip U17 is connected to one end of the fuse resistor FB12, and the other end of the fuse resistor FB12 is connected to the output terminal of the power supply, which is a 5V constant voltage power supply. The fifth pin of the voltage regulator chip U17 is connected to one end of the capacitor C181, one end of the capacitor C182, and the 5th and 35th pins of the main control chip U18. The other ends of the capacitors C181 and C182 are grounded.

4. The real-time switching management circuit for multiple video signal sources according to claim 3, characterized in that: The video signal display device is equipped with a video signal processing chip U19, which has 8 pins. The 8th pin of the video signal processing chip U19 is connected to the output terminal of the power supply, and the 5th and 6th pins of the video signal processing chip U19 are connected to the 19th and 18th pins of the main control chip U18, respectively.

5. The real-time switching management circuit for multiple video signal sources according to claim 4, characterized in that: The video signal input interface 1 includes interface J21, which is an HDMI video signal interface. Interface J21 has 23 pins, and pins 12, 10, 9, 7, 6, 4, 3, and 1 of interface J21 are connected to pins 21, 22, 24, 25, 27, 28, 30, and 31 of the main control chip U18, respectively.

6. The real-time switching management circuit for multiple video signal sources according to claim 5, characterized in that: The video signal input interface 2 includes interface J22, which is an HDMI video signal interface. Interface J22 has 23 pins, and pins 12, 10, 9, 7, 6, 4, 3, and 1 of interface J22 are respectively connected to pins 6, 7, 9, 10, 12, 13, 15, and 16 of the main control chip U18.

7. The real-time switching management circuit for multiple video signal sources according to claim 6, characterized in that: The video signal input interface 1 includes interface J23, which has 23 pins. Interface J23 is an HDMI video signal interface. Pins 12, 10, 9, 7, 6, 4, 3, and 1 of interface J23 are connected to pins 50, 51, 53, 54, 56, 57, 59, and 60 of the main control chip U18, respectively.

8. The real-time switching management circuit for multiple video signal sources according to claim 7, characterized in that: The voltage regulator chip U17 is model SOT-23-5, and the video signal processing chip U19 is model SOP8.

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