CN115914508A - Automatic signal detection switching device and method applied to video terminal - Google Patents

Abstract

The invention discloses a signal automatic detection switching device and method applied to a video terminal, and relates to the technical field of signal switching. The invention includes a main housing unit and a processing unit. Beneficial effects of the present invention: From the point of view of system maintenance, the present invention can effectively reduce the scope of maintenance after a fault occurs in the video conferencing system, and effectively reduce the failure rate of the system. When a fault occurs, the device can be the first The signal source is detected and switched at the right time, which can minimize the impact on the conference and improve the experience of the participants. The devices on the market for switching between the main and standby signals still only switch for a certain signal, and the appearance of this device can At the same time, it solves the problem of network and video signal detection and automatic switching in the conference system, which is more convenient and practical in the actual environment.

Description

A signal automatic detection switching device and method applied to a video terminal

Technical Field

The present invention relates to the technical field of signal switching, and in particular to a signal automatic detection and switching device and method applied to a video terminal.

Background Art

With the rapid development of communication technology, collaboration between employees and between departments has become more and more frequent. In addition, the company has made great efforts to reduce costs and strictly control labor costs. Video conferencing systems have been widely used in company decision-making, production, infrastructure, management and other meetings, greatly improving the company's production and office efficiency. However, at the same time, it has also put forward higher requirements for the high-quality, high-reliability and high-security operation of video conferencing systems.

There are many video and network signal switchers circulating on the market, with various styles but a single type. They can detect and automatically switch between video and network dual signals. This function can bring great convenience to system operation and maintenance and troubleshooting. That is, there is currently a lack of devices that can detect and automatically switch between video and network dual signals. Therefore, there is an urgent need for a device that can quickly switch to a backup link when a network or video signal fails, so that the meeting can be carried out smoothly and efficiently.

Summary of the invention

The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

In view of the problems existing in the prior art, the present invention is proposed.

Therefore, the technical problem to be solved by the present invention is the lack of a device that can quickly switch to a backup link when a network or video signal fails.

To solve the above technical problems, the present invention provides the following technical solutions: a signal automatic detection and switching device applied to a video terminal, comprising a main shell unit, including a main shell, an input interface, an output interface and a power interface, wherein the input interface is provided at one end of the main shell, and the output interface and the power interface are provided at the other end; a processing unit, located in the main shell, comprising a PCB circuit board, an input processing module and an output processing module, wherein the PCB circuit board is electrically connected to the input module and the output module respectively.

As a preferred solution of the signal automatic detection and switching device applied to a video terminal of the present invention, wherein: the input interface includes a plurality of HDMI video input interfaces and RJ45 network input interfaces.

As a preferred solution of the signal automatic detection and switching device applied to a video terminal of the present invention, wherein: the output interface includes an HDMI video output interface and an RJ45 network output interface.

As a preferred solution of the signal automatic detection and switching device applied to the video terminal of the present invention, wherein: the power supply interface is located between the HDMI video output interface and the RJ45 network output interface, and receives a 5V power supply.

As a preferred solution of the signal automatic detection and switching device applied to the video terminal of the present invention, the input processing module includes an HDMI video input circuit and an RJ45 network input circuit, which are respectively connected to the HDMI video input interface and the RJ45 network input interface.

As a preferred solution of the signal automatic detection and switching device applied to a video terminal of the present invention, wherein: the HDMI video input circuit includes 19 input pins.

As a preferred solution of the signal automatic detection and switching device applied to a video terminal of the present invention, wherein: the RJ45 network input circuit includes 8 input pins.

As a preferred solution of the automatic signal detection and switching device applied to a video terminal of the present invention, the output processing module includes an HDMI video detection and switching circuit and an RJ45 network detection and switching circuit.

As a preferred solution of the signal automatic detection switching device applied to the video terminal described in the present invention, wherein: the HDMI video detection switching circuit and the RJ45 network detection switching circuit are electrically connected to the HDMI video input circuit and the RJ45 network input circuit respectively.

To solve the above technical problems, the present invention also provides the following technical solutions: a signal automatic detection and switching method applied to a video terminal, which is implemented by the above signal automatic detection and switching device applied to the video terminal, and comprises the following steps: the HDMI video input circuit defaults to case 0 when it is powered on for the first time, that is, the first HDMI video input interface is defaulted; the RJ45 network input circuit defaults to case 1 when it is powered on for the first time, that is, the first RJ45 network input interface is defaulted; the HDMI video detection switching circuit defaults to case 0 when it is powered on for the first time, that is, the first HDMI video input interface is defaulted; the RJ45 network detection switching circuit defaults to case 1 when it is powered on for the first time, that is, the first RJ45 network input interface is defaulted; when both RJ45 network input interfaces are not connected, it is necessary to query again whether they are connected; when the network is connected, the ping command is used to detect whether the network is disconnected at this moment, and if it is disconnected, it needs to be reconnected.

Beneficial effects of the present invention:

From the perspective of system maintenance, the present invention can effectively reduce the scope of maintenance after a fault occurs in a video conferencing system, and effectively reduce the failure rate of the system. When a fault occurs, the device can detect and switch the signal source in the first time, which can minimize the impact on the meeting and improve the experience of the participants. The devices on the market for switching between main and standby signals are still limited to switching a single signal, and the emergence of this device can solve the problems of network and video signal detection and automatic switching in the conference system at the same time, which is more convenient and practical in the actual environment.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

FIG1 is a schematic diagram of the overall structure of a main housing unit of a signal automatic detection and switching device for a video terminal according to the present invention;

FIG2 is a schematic diagram of another angle of the signal automatic detection and switching device applied to a video terminal according to the present invention;

FIG3 is a schematic diagram of a PCB circuit welding principle of a signal automatic detection and switching device for a video terminal according to the present invention;

4 is a schematic diagram of an HDMI video input circuit of a signal automatic detection and switching device applied to a video terminal according to the present invention;

5 is a schematic diagram of an RJ45 network input circuit of a signal automatic detection and switching device applied to a video terminal according to the present invention;

6 is a schematic diagram of an HDMI video detection switching circuit of a signal automatic detection switching device applied to a video terminal according to the present invention;

7 is a schematic diagram of an RJ45 network detection switching circuit of a signal automatic detection switching device applied to a video terminal according to the present invention;

FIG. 8 is a flow chart of the automatic signal detection and switching method applied to a video terminal according to the present invention.

DETAILED DESCRIPTION

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

Example 1

1 to 5, a first embodiment of the present invention is shown. This embodiment provides a signal automatic detection and switching device for a video terminal, including a main shell unit 100, including a main shell 101, an input interface 102, an output interface 103 and a power interface 104. The main shell 101 has an input interface 102 at one end and an output interface 103 and a power interface 104 at the other end; a processing unit 200 is located in the main shell 101, including a PCB circuit board 201, an input processing module 202 and an output processing module 203. The PCB circuit board 201 is electrically connected to the input module 202 and the output module 203 respectively.

The input interface 102 includes a plurality of HDMI video input interfaces 102a and an RJ45 network input interface 102b.

The output interface 103 includes an HDMI video output interface 103 a and an RJ45 network output interface 103 b .

The power interface 104 is located between the HDMI video output interface 103a and the RJ45 network output interface 103b, and receives a 5V power supply.

The input processing module 202 includes an HDMI video input circuit 202a and an RJ45 network input circuit 202b, which are respectively connected to the HDMI video input interface 102a and the RJ45 network input interface 102b.

The HDMI video input circuit 202a includes 19 input pins.

The RJ45 network input circuit 202b includes 8 input pins.

The specific signal interpretations of the 19 input pins of the above HDMI video input circuit 202a are as follows:

Table 1

The 1-8 input pins of the above RJ45 network input circuit 202b represent:

Pin number name Interpretation 1 TX+ Send signal+ 2 TX- Signaling - 3 RX+ Receive signal+ 4 n/c Empty pin 5 n/c Empty pin 6 RX- Receive signal- 7 n/c Empty pin 8 n/c Empty pin

Table 2

Example 2

4 and 5, a second embodiment of the present invention is shown, which is different from the previous embodiment in that:

The output processing module 203 includes an HDMI video detection switching circuit 203a and an RJ45 network detection switching circuit 203b.

The HDMI video detection switching circuit 203a and the RJ45 network detection switching circuit 203b are electrically connected to the HDMI video input circuit 202a and the RJ45 network input circuit 202b respectively.

When the main and backup cables are inserted, the first RJ45 and HDMI interfaces are selected as the main input interfaces according to the program preset.

The specific implementation code is as follows:

Default HDMI video input interface selection code:

Default RJ45 network input interface selection code:

Example 3

6 to 8, a third embodiment of the present invention is provided, which provides a method for automatically detecting and switching a signal applied to a video terminal, which is implemented by the automatic detecting and switching device for a signal applied to a video terminal of the above embodiment, and includes the following steps:

When the HDMI video input circuit 202a is powered on for the first time, the default is case 0, that is, the first HDMI video input interface 102a is used by default; when the RJ45 network input circuit 202b is powered on for the first time, the default is case 1, that is, the first RJ45 network input interface 102b is used by default; when the HDMI video detection switching circuit 202a is powered on for the first time, the default is case 0, that is, the first HDMI video input interface 102a is used by default; when the RJ45 network detection switching circuit 202b is powered on for the first time, the default is case 1, that is, the first RJ45 network input interface 102b is used by default; if both RJ45 network input interfaces 102b are unavailable, it is necessary to check again whether they are connected; if the network is connected, the ping command is used to detect whether the network is disconnected at this moment, and if it is disconnected, it needs to be reconnected.

When the main input interface detects signal loss, the main and backup input interfaces will be switched.

The implementation code is as follows:

HDMI input interface detection and switching code:

RJ45 network input interface detection and switching code:

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims (10)

1. A signal automatic detection and switching device for a video terminal, characterized in that: it comprises: A main housing unit (100) comprises a main housing (101), an input interface (102), an output interface (103) and a power interface (104); the main housing (101) has an input interface (102) at one end and an output interface (103) and a power interface (104) at the other end; The processing unit (200) is located in the main housing (101), and comprises a PCB circuit board (201), an input processing module (202) and an output processing module (203), wherein the PCB circuit board (201) is electrically connected to the input module (202) and the output module (203), respectively. 2. The signal automatic detection and switching device applied to a video terminal as described in claim 1 is characterized in that: the input interface (102) includes a plurality of HDMI video input interfaces (102a) and RJ45 network input interfaces (102b). 3. The signal automatic detection and switching device applied to a video terminal as described in claim 2 is characterized in that: the output interface (103) includes an HDMI video output interface (103a) and an RJ45 network output interface (103b). 4. The signal automatic detection and switching device applied to a video terminal as described in claim 3 is characterized in that: the power supply interface (104) is located between the HDMI video output interface (103a) and the RJ45 network output interface (103b), and receives a 5V power supply. 5. The signal automatic detection and switching device applied to a video terminal as described in any one of claims 2 to 4 is characterized in that: the input processing module (202) includes an HDMI video input circuit (202a) and an RJ45 network input circuit (202b), which are respectively connected to the HDMI video input interface (102a) and the RJ45 network input interface (102b). 6. The signal automatic detection and switching device applied to a video terminal as claimed in claim 5, characterized in that: the HDMI video input circuit (202a) includes 19 input pins. 7. The signal automatic detection and switching device applied to a video terminal as claimed in claim 6, characterized in that: the RJ45 network input circuit (202b) includes 8 input pins. 8. The automatic signal detection and switching device for video terminals as claimed in any one of claims 1 to 4, 6 and 7, characterized in that the output processing module (203) comprises an HDMI video detection and switching circuit (203a) and an RJ45 network detection and switching circuit (203b). 9. The signal automatic detection and switching device applied to a video terminal as described in claim 8 is characterized in that: the HDMI video detection switching circuit (203a) and the RJ45 network detection switching circuit (203b) are electrically connected to the HDMI video input circuit (202a) and the RJ45 network input circuit (202b) respectively. 10. A signal automatic detection and switching method applied to a video terminal, characterized in that: it is implemented by the signal automatic detection and switching device applied to a video terminal as claimed in claim 5, comprising the following steps: The HDMI video input circuit (202a) defaults to case 0 when powered on for the first time, that is, the first HDMI video input interface (102a) is defaulted; The RJ45 network input circuit (202b) defaults to case 1 when powered on for the first time, i.e., the first RJ45 network input interface (102b) is used by default; The HDMI video detection switching circuit (202a) defaults to case 0 when powered on for the first time, that is, the first HDMI video input interface (102a) is defaulted; The RJ45 network detection switching circuit (202b) defaults to case 1 when powered on for the first time, i.e., defaults to the first RJ45 network input interface (102b); If both RJ45 network input interfaces (102b) are blocked, it is necessary to check again whether they are connected; When the network is connected, use the ping command to check whether the network is disconnected at the moment. If disconnected, reconnect.

Images