Converter

Abstract

The utility model discloses a converter, and relates to the technical field of signal conversion, and the converter comprises a signal input module which comprises four serial digital signal input ports which are respectively used for receiving four paths of serial digital signals; the signal conversion module is connected with the signal input module and is used for carrying out merging processing or extended transmission processing on the accessed serial digital signals; the signal output module is connected with the signal conversion module and is used for outputting the high-definition multimedia signals obtained after merging processing or extension transmission processing, so that multiple paths of serial digital signals are merged into one path of high-definition multimedia signals based on a single converter; meanwhile, the converter can meet the requirement of long-distance transmission of high-definition multimedia signals.

Description

Technical Field

[0001] The present application relates to the technical field of signal conversion, and in particular to a converter. Background Art

[0002] SDI (Serial Digital Interface) and HDMI (High-Definition Multimedia Interface) are two commonly used interface standards. Among them, the SDI interface has the advantages of long transmission distance and strong anti-interference ability, while the HDMI interface has the advantages of high resolution and simple interface.

[0003] However, conventional converters can usually only convert one serial digital signal into one high-definition multimedia signal, which cannot meet the needs of multi-channel signal merging and transmission. For example, in some scenarios where one or more camera signals need to be transmitted to a display for monitoring at the same time, multiple serial digital converters are required, which not only increases the cost but also makes the system more complicated.

[0004] In addition, conventional converters have limited transmission distance for 12G signals and cannot meet the needs of long-distance transmission. For example, in some scenarios where long-distance serial digital signals need to be transmitted to the control room for display, optical fiber or other transmission equipment is required, which not only increases costs but also makes the system more complicated.

[0005] Therefore, it is of great practical significance to develop a converter that can merge multiple serial digital signals into one high-definition multimedia signal and support long-distance transmission. Utility Model Content

[0006] The main purpose of the present application is to provide a converter, aiming at solving the technical problem of how to merge multiple serial digital signals into one high-definition multimedia signal based on a single converter and support long-distance transmission.

[0007] To achieve the above object, the present application proposes a converter, which includes:

[0008] A signal input module, the signal input module comprises four serial digital signal input ports, respectively used for receiving four serial digital signals;

[0009] A signal conversion module connected to the signal input module, the signal conversion module is used to merge or extend the transmission of the connected serial digital signals;

[0010] The signal output module connected to the signal conversion module is used to output the high-definition multimedia signal obtained after the combined processing or the extended transmission processing.

[0011] In one embodiment, the four serial digital signal input ports include a dual mode serial digital signal input port, a first single mode serial digital signal input port, a second single mode serial digital signal input port, and a third single mode serial digital signal input port.

[0012] In one embodiment, the signal output module is further provided with a mode switching switch;

[0013] The mode switching switch is used to switch the signal input modes of the four serial digital signal input ports, wherein the signal input modes include a single-channel input mode and a four-channel input mode.

[0014] In one embodiment, the signal conversion module includes a first conversion unit;

[0015] The first conversion unit is provided with a first programmable logic chip, which is used to merge and process four serial digital signals connected from four serial digital signal input ports respectively when the signal input mode of the mode switching switch is a four-channel input mode, and output a high-definition multimedia signal.

[0016] In one embodiment, the signal conversion module includes a second conversion unit;

[0017] The second conversion unit is provided with a second programmable logic chip, which is used to extend the transmission processing of the serial digital signal connected from the dual-mode serial digital signal input port when the signal input mode of the mode switching switch is a single-channel input mode, and output a high-definition multimedia signal.

[0018] In one embodiment, the mode switching switch is further used to switch the output display signal mode of the signal output module, and the output display signal mode includes a test display signal mode and a serial digital display signal mode.

[0019] In one embodiment, the signal conversion module further includes a test pattern generation module, which has a preset test pattern built therein, and is used to transmit the preset test pattern to the signal output module when the output display signal mode of the mode switching switch is the test display signal mode.

[0020] In one embodiment, the mode switching switch is also used to switch the output signal mode of the signal output module, and the output signal mode includes an audio and video signal mode and a video signal mode.

[0021] In one embodiment, the signal conversion module also includes a video signal adapter, which is used to convert the high-definition multimedia signal generated by the first conversion unit or the second conversion unit to generate a digital video interface signal when the output signal mode of the mode switching switch is a video signal mode.

[0022] In one embodiment, the signal output module is provided with an analog audio output port, and the analog audio output port is used to connect to an audio output device.

[0023] One or more technical solutions proposed in this application have at least the following technical effects:

[0024] A converter is proposed, which includes: a signal input module, which includes four serial digital signal input ports and is respectively used to receive four serial digital signals; a signal conversion module connected to the signal input module, which is used to merge or extend the transmission of the connected serial digital signals; and a signal output module connected to the signal conversion module, which is used to output a high-definition multimedia signal obtained after the merging or extending transmission.

[0025] In the present application, four serial digital signal input ports for receiving four serial digital signals respectively are set on the signal input module of the converter, and at the same time, through the signal conversion module, when the signal input module receives multiple serial digital signals from multiple serial digital signal input ports, the received serial digital signals are merged and processed, and when the signal input module receives one serial digital signal from a single serial digital signal input port, the received serial digital signal is extended for transmission, and the high-definition multimedia signal obtained after the corresponding merging or extended transmission processing is output from the signal output module, thereby realizing the merging of multiple serial digital signals into one high-definition multimedia signal based on a single converter, and the converter can support the needs of long-distance transmission of high-definition multimedia signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the structure of the converter of this application;

[0029] Figure 2 This is a schematic diagram of the structure of the mode switching switch of this application;

[0030] Figure 3A schematic diagram of an application environment in which multiple camera signals (i.e., serial digital signals) need to be transmitted to a display simultaneously for monitoring;

[0031] Figure 4 The present invention is a schematic diagram of an application environment in which serial digital signals need to be transmitted to a remote control room for display.

[0032] Description of Figure Numbers:

[0033] 10. Signal input module; 20. Signal conversion module; 30. Signal output module.

[0034] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, 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 technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] Based on this, the embodiment of the present application provides a converter, referring to Figure 1 , Figure 1 This is a schematic diagram of the structure of the converter of this application.

[0039] In this embodiment, the converter includes:

[0040] A signal input module 10 includes four serial digital signal input ports, each used to receive four serial digital signals; a signal conversion module 20 connected to the signal input module 10, the signal conversion module 20 is used to combine or extend the transmission of the connected serial digital signals; a signal output module 30 connected to the signal conversion module 20 is used to output the high-definition multimedia signal obtained after the combination processing or the extended transmission processing.

[0041] based on Figure 1 From one of the panels of the converter shown and the interface structure opposite to the panel, it can be seen that the signal input module 10 proposed in this embodiment is arranged on one of the panels, and the signal output module 30 is arranged on the other panel opposite to the panel on which the signal input module 10 is arranged, and the signal conversion module 20 is arranged inside the converter.

[0042] It should be noted that four serial digital signal input ports are provided on the signal input module 10 in the present embodiment, which can be used to respectively access, for example, 1-4 serial digital signals input by the same camera, and the signal conversion module 20 connected to the four serial digital signal input ports can input 1-4 serial digital signals for merging or extended transmission processing, thereby overcoming the defects that conventional converters can only convert one serial digital signal into one high-definition multimedia signal and the transmission distance of the converted high-definition multimedia signal is too short. At the same time, the signal output module 30 is connected to the signal conversion module 20, and is used to transmit the high-definition multimedia signal obtained after the merging or extended transmission processing to the display device connected to the signal output module 30, so as to display the display screen corresponding to the high-definition multimedia signal.

[0043] The high-definition multimedia signal output port on the signal output module 30 is used to output high-definition multimedia signals (i.e. Figure 1 HDMI OUT in the display.

[0044] Further, the four serial digital signal input ports include a dual-mode serial digital signal input port, a first single-mode serial digital signal input port, a second single-mode serial digital signal input port, and a third single-mode serial digital signal input port.

[0045] It should be noted that according to Figure 1 It can be seen that the types of the four serial digital signal input ports configured in this embodiment are not the same, among which the dual-mode serial digital signal input port (i.e. Figure 1 SDI IN 1 in the Figure 13G-SDI) and 12G serial digital signal (ie Figure 1 12G-SDI), and the first single-mode serial digital signal input port (i.e. Figure 1 SDI IN 2 in the second single-mode serial digital signal input port (i.e. Figure 1 SDI IN 3) and the third single-mode serial digital signal input port (i.e. Figure 1 The SDI IN 4 in the figure can only connect to high-definition serial digital signals and 3G serial digital signals. Because this embodiment sets the dual-mode serial digital signal input port to receive a 12G serial digital signal, it is assumed that the 12G serial digital signal needs to be extended for transmission. The 12G serial digital signal received at the dual-mode serial digital signal input port will be directly extended for transmission and then output to the display device.

[0046] Specific combination Figure 1 and Figure 2 It can be seen that the signal output module 30 is also provided with a mode switching switch (i.e. Figure 1 MODE in the figure); a mode switch for switching the signal input modes of the four serial digital signal input ports. The signal input modes include a single-channel input mode and a four-channel input mode. The single-channel input mode is to access the signal through the dual-mode serial digital signal input port. The four-channel input mode is to access the signal through the dual-mode serial digital signal input port, the first single-mode serial digital signal input port, the second single-mode serial digital signal input port, and the third single-mode serial digital signal input port.

[0047] It should also be noted that, in order to avoid confusion in signal conversion, the present embodiment further sets a mode switch for switching the signal input modes of the four serial digital signal input ports. The user switches the mode switch to the corresponding signal input mode according to the actual needs of the current application environment. For example, when the current application environment requires that multiple camera signals be transmitted to the display for monitoring at the same time, the mode switch can be switched to the corresponding signal input mode. Figure 2 The first switch (i.e. Figure 2 Switch the label 1) in the figure to "ON" to start the four-channel input mode for signal conversion; in the current application environment where the serial digital signal needs to be transmitted to a remote control room for display, the following can be used Figure 2 The first switch in the mode switching switch shown is switched to "OFF", thereby turning on the single-channel input module to convert signals, thereby realizing multiple signal conversion application scenarios based on a single converter and reducing the use limitations of the converter.

[0048] Combination Figure 3, the current application environment that requires multiple camera signals (ie, serial digital signals) to be transmitted to a display for monitoring at the same time is described.

[0049] Furthermore, the signal conversion module 20 includes a first conversion unit; a first programmable logic chip is provided in the first conversion unit, and the first programmable logic chip is used to merge and process four serial digital signals connected from four serial digital signal input ports respectively when the signal input mode of the mode switching switch is a four-channel input mode, and output a high-definition multimedia signal.

[0050] When the signal input mode of the mode switch of the converter is the four-channel input mode, the first conversion unit in the signal conversion module 20 inside the converter is called to merge the four serial digital signals received. Figure 3 As an example, the dual-mode serial digital signal input port, the first single-mode serial digital signal input port, the second single-mode serial digital signal input port, and the third single-mode serial digital signal input port in the figure are all connected to the same camera (i.e. Figure 3 The first conversion unit is connected to the camera in the figure, and receives four serial digital signals of 3G each output by the camera. That is, after the 12G image data to be transmitted to the converter by the camera is divided into four 3G image data and converted into serial data signals, it is transmitted to the first conversion unit, and the first programmable logic chip on the first conversion unit is called, and the time is divided into multiple segments through the time division multiplexing technology of the first programmable logic chip, and each segment transmits a serial digital signal, thereby realizing the combined processing and transmission of the four-channel serial digital signal, or the four independent serial digital signals input are bound together through the first programmable logic chip, and transmitted on the same 12G serial digital signal physical channel, thereby realizing the combined processing and transmission of the four-channel serial digital signal.

[0051] Combination Figure 4 , which is explained in the application environment where the serial digital signal needs to be transmitted to a remote control room for display.

[0052] Furthermore, the signal conversion module 20 includes a second conversion unit; a second programmable logic chip is provided in the second conversion unit, and the second programmable logic chip is used to extend the transmission processing of the serial digital signal connected from the dual-mode serial digital signal input port when the signal input mode of the mode switching switch is a single-channel input mode, and output a high-definition multimedia signal.

[0053] When the model input mode of the mode switch of the converter is the single-channel input mode, the second conversion unit in the signal conversion module 20 inside the converter is called to merge the connected serial digital signal to obtain the single-channel input mode. Figure 4 As an example, the dual-mode serial digital signal input port in the figure is connected to a camera (i.e. Figure 4 The second conversion unit is connected to the camera in the figure, and the 12G serial digital signal output by the camera is accessed. The second conversion unit is accessed to the 12G serial digital signal, and the second programmable logic chip on the second conversion unit is called. The regeneration function of the 12G serial digital signal is realized by the second programmable logic chip, and the 12G serial digital signal is amplified and shaped, thereby extending the transmission distance of the 12G serial digital signal, or the error correction coding technology is realized by the second programmable logic chip, the 12G serial digital signal is encoded on the second programmable logic chip, and the 12G serial digital signal is decoded by the second programmable logic chip at the position where the 12G serial digital signal is received, thereby improving the transmission reliability of the 12G serial digital signal, thereby extending the transmission distance, or the transmission protocol of the 12G serial digital signal, such as SMPTE ST-2082, etc., is realized by the second programmable logic chip, thereby ensuring the standardization and compatibility of the transmission of the 12G serial digital signal, thereby extending the transmission distance.

[0054] Furthermore, the mode switching switch is also used to switch the output display signal mode of the signal output module 30, and the output display signal mode includes a test display signal mode and a serial digital display signal mode.

[0055] according to Figure 2 It can be seen that the mode switching switch proposed in this embodiment also includes an output display signal mode. If it is necessary to detect the display device connected to the converter (ie Figure 3 and Figure 4 Whether the UHDTV in the display is working properly, that is, whether the resolution and format of the display device are correct, or whether the color setting of the display device is correct, at this time, the second switch in the mode switch (i.e. Figure 2 3) in the mode switch is switched to "ON" to start the test display signal mode of the converter; if it is not necessary to detect whether the display device connected to the converter can work normally, but the converter is required to output high-definition multimedia signals normally for playback, the second switch in the mode switch can be switched to "OFF" to start the serial digital display signal mode of the converter.

[0056] Furthermore, the signal conversion module 20 also includes a test pattern generation module, in which a preset test pattern is built, and when the output display signal mode of the mode switching switch is the test display signal mode, the preset test pattern is transmitted to the signal output module 30. That is, in this embodiment, a test pattern generation module is also set in the signal conversion module 20. When the second switch in the mode switching switch on the converter module indicates to turn on the test display signal mode, the test pattern generation module is called at this time, and the preset test pattern in the test pattern generation module is converted into corresponding display data and transmitted to the signal output module 30. The display data is transmitted to the display device through the signal output module 30 for image testing, so that the user can judge whether the display device can work normally by observing the display image corresponding to the display data.

[0057] Furthermore, the mode switching switch is also used to switch the output signal mode of the signal output module 30, and the output signal mode includes an audio and video signal mode and a video signal mode.

[0058] according to Figure 2 It can be seen that the mode switching switch proposed in this embodiment also includes an output signal mode. If the high-definition multimedia signal output to the display device for playback only needs to display the picture but does not need to play the audio, the third switch (i.e. Figure 2 2) in the mode switch is switched to "ON" to start the video signal mode; if the high-definition multimedia signal output to the display device for playback requires synchronization of the picture and audio, the third switch in the mode switch is switched to "OFF" to start the audio and video signal mode.

[0059] Furthermore, the signal conversion module 20 also includes a video signal adapter, which is used to convert the high-definition multimedia signal generated by the first conversion unit or the second conversion unit to generate a digital video interface signal when the output signal mode of the mode switching switch is the video signal mode. That is, if only the screen display is required, a video signal adapter needs to be inserted into the signal conversion module 20 to ensure that the video signal mode of the converter can operate normally.

[0060] In addition, combined Figure 1 , Figure 3 and Figure 4 It can be seen that the signal output module 30 is provided with an analog audio output port (i.e. Figure 1 The AUDIO OUT in the analog audio output port is used to connect to the audio output device (i.e. Figure 3 and Figure 4 The signal output module 30 is also provided with a power supply access port (i.e. Figure 1POWER in the power supply) to connect the power adapter (i.e. Figure 3 and Figure 4 The Power Adaptor in the converter transmits 12V DC power to the converter; the signal output module 30 is also provided with a power signal light (i.e. Figure 1 a in the figure), when the converter enters the operating state, the power signal light will light up; the signal output module 30 is also provided with a micro USB interface (i.e. Figure 1 UPDATE in), used to access the debugging device (i.e. Figure 3 and Figure 4 The PC in the system can be used to debug the program on the converter and update the firmware.

[0061] At the same time, the signal input module 10 is also provided with serial digital signal lights (i.e. Figure 1 When a serial digital signal input port is connected to a serial digital signal, the serial digital signal light corresponding to the serial digital signal input port connected to the serial digital signal will light up accordingly.

[0062] It should be noted that, because Figure 1 , Figure 3 and Figure 4 The converters involved in the Figure 3 and Figure 4 The structure in is repeated. Figure 2 The fourth switch numbered 4 is an idle switch.

[0063] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A converter, characterized in that: The converter comprises: A signal input module, wherein the signal input module comprises four serial digital signal input ports, each of which is used to receive four serial digital signals; A signal conversion module connected to the signal input module, the signal conversion module is used to combine or extend the transmission of the serial digital signals received; The signal output module connected to the signal conversion module is used to output the high-definition multimedia signal obtained after the merging process or the extended transmission process.

2. The converter according to claim 1, characterized in that The four serial digital signal input ports include a dual mode serial digital signal input port, a first single mode serial digital signal input port, a second single mode serial digital signal input port and a third single mode serial digital signal input port.

3. The converter according to claim 2, characterized in that The signal output module is also provided with a mode switching switch; The mode switching switch is used to switch the signal input modes of the four serial digital signal input ports, wherein the signal input modes include a single-channel input mode and a four-channel input mode.

4. The converter according to claim 3, characterized in that The signal conversion module includes a first conversion unit; A first programmable logic chip is provided in the first conversion unit. The first programmable logic chip is used to merge the four serial digital signals connected from the four serial digital signal input ports respectively when the signal input mode of the mode switching switch is the four-channel input mode, and output a high-definition multimedia signal.

5. The converter according to claim 4, characterized in that The signal conversion module includes a second conversion unit; A second programmable logic chip is provided in the second conversion unit. The second programmable logic chip is used to extend the transmission processing of the serial digital signal connected from the dual-mode serial digital signal input port when the signal input mode of the mode switching switch is the single-channel input mode, and output a high-definition multimedia signal.

6. The converter according to claim 5, characterized in that The mode switching switch is also used to switch the output display signal mode of the signal output module, and the output display signal mode includes a test display signal mode and a serial digital display signal mode.

7. The converter according to claim 6, characterized in that The signal conversion module also includes a test pattern generation module, which has a preset test pattern built therein and is used to transmit the preset test pattern to the signal output module when the output display signal mode of the mode switching switch is the test display signal mode.

8. The converter according to claim 7, characterized in that The mode switching switch is also used to switch the output signal mode of the signal output module, and the output signal mode includes an audio and video signal mode and a video signal mode.

9. The converter according to claim 8, characterized in that The signal conversion module also includes a video signal adapter, which is used to convert the high-definition multimedia signal generated by the first conversion unit or the second conversion unit to generate a digital video interface signal when the output signal mode of the mode switching switch is the video signal mode.

10. The converter according to claim 9, characterized in that The signal output module is provided with an analog audio output port, and the analog audio output port is used to connect to an audio output device.

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