CN210444395U - Video and audio signal transmission interface - Google Patents
Video and audio signal transmission interface Download PDFInfo
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- CN210444395U CN210444395U CN201922330801.5U CN201922330801U CN210444395U CN 210444395 U CN210444395 U CN 210444395U CN 201922330801 U CN201922330801 U CN 201922330801U CN 210444395 U CN210444395 U CN 210444395U
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Abstract
The utility model relates to an audio-visual broadcasting field specifically is an audio-visual signal transmission interface, including switch module, distribution module, processing module and output port. When a user uses the audio-video signal transmission interface, the display equipment is only required to be connected to the output port through the connecting cable, so that the process that the user identifies the port is avoided; when a user needs the first audio-video signal to be displayed on the display device in a lossless loop-out state, the user only needs to control the shielding state of the switch module, so that the second audio-video signal is shielded, and the first audio-video signal is output; if the user has changed the user demand, from showing first audio-visual signal on display device, change into showing second audio-visual signal on same display device, then, the user only need control switch module's shielding state once more to with first audio-visual signal shielding and with second audio-visual signal output can, can let the user more convenient at the in-process of using.
Description
Technical Field
The utility model relates to an audio-visual broadcasting field specifically is an audio-visual signal transmission interface.
Background
The transmission interface in the prior art generally has a function of outputting one path of video input signals in a lossless manner, and a function of processing and then outputting the video input signals. Referring to fig. 4, a transmission interface in the prior art is shown in fig. 4, where an HDMI input port is used to acquire a signal and output the signal to an HDMI distributor, and the HDMI distributor outputs the acquired signal to an HDMI ring-out port in a lossless ring-out manner, or the HDMI distributor outputs the acquired signal to an HDMI Rx phy, and the HDMI Rx phy performs format conversion on the signal, and then outputs the signal with the converted format to a host chip, which processes the acquired signal and outputs the processed signal to an HDMI output port, and the HDMI output port outputs the acquired signal to the outside.
However, in the transmission interface in the prior art, the interface with lossless loop-out function and the interface that is processed and then output are independent of each other, so that when a user uses the transmission interface in the prior art, the user needs to identify the specific interface function, which causes inconvenience in use.
SUMMERY OF THE UTILITY MODEL
In the transmission interface for solving among the prior art, be the interface that does not harm the ring-out function and handle the interface mutual independence of exporting again after to make the user when using the transmission interface among the prior art, need identify specific interface function, lead to the user to use inconvenient technical problem, the utility model provides an audio-visual signal transmission interface.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to an aspect of the present invention, there is provided an audio-visual signal transmission interface, comprising a switch module, a distribution module, a processing module and an output port; the distribution module is electrically connected with the switch module and the processing module respectively, and is used for acquiring a first audio-video signal which is output to the switch module and the processing module respectively; the processing module is electrically connected with the switch module and is used for outputting a second audio-video signal which is output to the switch module; the switch module is electrically connected with the output port and is used for selectively outputting the received first audio-video signal or the received second audio-video signal to the output port.
Further, the processing module is further configured to output a control signal, the control signal is output to the switch module, and the control signal is configured to control the switch module to selectively output the first audio-video signal or the second audio-video signal to the output port.
Furthermore, the device also comprises a control switch and/or a communication module; the control switch is electrically connected with the processing module, and is used for sending a first control instruction which is transmitted to the processing module; the communication module is electrically connected with the processing module, and is used for receiving and forwarding a second control instruction which is transmitted to the processing module; when the first control instruction and the second control instruction are false at the same time, the processing module interrupts the control signal; and when the first control instruction and/or the second control instruction are true, the processing module outputs the control signal.
Further, the device also comprises an input port; the input port is electrically connected with the distribution module, the input port is used for receiving and forwarding the first audio-video signal, and the first audio-video signal is transmitted to the distribution module.
Further, the system also comprises a transcoding module; the transcoding module is electrically connected between the distribution module and the processing module, and is used for transcoding the format of the received first audio-video signal and outputting the transcoded first audio-video signal to the processing module.
Furthermore, the processing module is used for receiving the transcoded first audio-video signal and converting the transcoded first audio-video signal into the second audio-video signal, and the second audio-video signal is output to the switch module.
Further, the input port and the output port are HDMI ports, respectively; the input port is used for receiving and forwarding the first audio-video signal, and the first audio-video signal is a first HDMI signal; the distribution module is used for outputting the first HDMI signal to the transcoding module and the switch module respectively; the transcoding module is used for transcoding the format of the first HDMI signal and outputting the transcoded first HDMI signal to the processing module; the processing module is used for converting the transcoded first HDMI signal into a second audio-video signal, wherein the second audio-video signal is a second HDMI signal, and the second HDMI signal is output to the switch signal; the output port is used for outputting the first HDMI signal or the second HDMI signal.
Further, the transcoding module is further configured to transcode the first HDMI signal into BT1120 format, and output the transcoded first HDMI signal to the processing module.
The technical scheme has the following advantages or beneficial effects:
the utility model provides an audio-visual signal transmission interface, when the user uses audio-visual signal transmission interface, only need to connect the display device to the output port through the connecting cable, thus has avoided the process that the user discerned the port; when a user needs the first audio-video signal to be displayed on the display device in a lossless loop-out state, the user only needs to control the shielding state of the switch module, so that the second audio-video signal is shielded, and the first audio-video signal is output; if the user changes the use requirement, the first audio-video signal is displayed on the display equipment, and the second audio-video signal is displayed on the same display equipment, then the user only needs to control the shielding state of the switch module again, so that the first audio-video signal is shielded, and the second audio-video signal is output. Compared with the transmission interface in the prior art, the utility model provides an audio-visual signal transmission interface can let the user more convenient at the in-process that uses.
Drawings
Fig. 1 is a schematic structural diagram of an audio-visual signal transmission interface provided in an embodiment of the present invention;
fig. 2 is another schematic structural diagram of an audio-visual signal transmission interface provided in an embodiment of the present invention;
fig. 3 is another schematic structural diagram of an audio-visual signal transmission interface provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a transmission interface in the prior art.
Detailed Description
In the transmission interface for solving among the prior art, be the interface that does not harm the ring-out function and handle the interface mutual independence of exporting again after to make the user when using the transmission interface among the prior art, need identify specific interface function, lead to the user to use inconvenient technical problem, the utility model provides an audio-visual signal transmission interface.
Referring to fig. 1, an audio-visual signal transmission interface includes a switch module 1, a distribution module 2, a processing module 3, and an output port 4; the distribution module 2 is respectively and electrically connected with the switch module 1 and the processing module 3, the distribution module 2 is used for acquiring a first audio-video signal, and the acquired first audio-video signal is respectively output to the switch module 1 and the processing module 3; the processing module 3 is electrically connected with the switch module 1, the processing module 3 is used for outputting a second audio-video signal, and the second audio-video signal is output to the switch module 1; the switch module 1 is electrically connected to the output port 4, and the switch module 1 is configured to selectively output the received first audio-video signal or the received second audio-video signal to the output port 4.
Wherein, the utility model provides an audio-visual signal transmission interface has following using-way:
a, will the utility model provides an audio-visual signal transmission interface uses as input device. In this kind of using method, will the utility model provides an audio-visual signal transmission interface is connected with the signal source communication of outside, and distribution module 2 is used for obtaining the first audio-visual signal that comes from the signal source of outside to transmit first audio-visual signal to switch module 1; after the switch module 1 obtains the first audio-video signal, the switch module 1 outputs the first audio-video signal to the output port 4. The use mode can enable the first video-audio signal to be in a lossless loop-out state, the transmission rate of the first video-audio signal is high, the time delay is small, and more importantly, the first video-audio signal is in the lossless loop-out state and can meet the use requirement of high definition.
B, will the utility model provides an audio-visual signal transmission interface uses as output device. In this kind of using method, will the utility model provides an audio-visual signal transmission interface is connected with the signal source communication of outside, and distribution module 2 is used for obtaining the first audio-visual signal that comes from the signal source of outside to transmit first audio-visual signal to processing module 3; after acquiring the first audio-video signal, the processing module 3 converts the first audio-video signal into a second audio-video signal and outputs the second audio-video signal to the output port 4. The use mode can enable the first audio-video signal to be converted into the second audio-video signal through the processing module 3, and the second audio-video signal can meet at least one broadcast requirement or at least one use requirement, so that the actual use requirement of a user is met. It should be understood that the broadcast requirements should be signal definition of the broadcast signal standard and coding format requirements of the signal, including but not limited to HDTV studio standards; and the use requirement is the requirement that the user can play the video and audio signals in various ways according to different scenes, including but not limited to split screen playing.
Only one of the aforementioned 'A' or 'B' usage modes can be adopted at the same time; in other words, when the first audio-video signal is output by adopting the 'A' use mode, the 'B' use mode exists objectively, but the first audio-video signal is actually shielded and output; similarly, when the second audio-video signal is output by adopting the 'B' use mode, the 'A' use mode also exists objectively, but the second audio-video signal is output by shielding. The switch module 1 can shield the first audio-video signal or the second audio-video signal.
The switch module 1 can shield the first audio-video signal or the second audio-video signal according to actual use requirements; when the first audio-video signal is shielded, the switch module 1 outputs the second audio-video signal to the output port 4; when the second video signal is shielded, the switch module 1 outputs the first video signal to the output port 4.
In the transmission interface in the prior art, when a user uses the transmission interface, if an audio-video signal needs to be output in a lossless state, the user firstly needs to identify whether one of the interfaces of the transmission interface in the prior art is a lossless output interface, and then connects a peripheral display device to the lossless output interface through a connecting cable; at this time, if the user changes the use requirement and needs to perform split-screen display on the audio-video signal by using the same equipment, the user needs to remove the connecting cable connected to the lossless output interface and insert the connecting cable into another interface of the transmission interfaces in the prior art again; the user also needs to determine whether another interface is the one that meets the requirements.
When the user uses the audio-visual signal transmission interface, the user only needs to connect the display equipment to the output port through the connecting cable, thereby avoiding the process of identifying the port by the user; when a user needs the first audio-video signal to be displayed on the display device in a lossless loop-out state, the user only needs to control the shielding state of the switch module, so that the second audio-video signal is shielded, and the first audio-video signal is output; if the user changes the use requirement, the first audio-video signal is displayed on the display equipment, and the second audio-video signal is displayed on the same display equipment, then the user only needs to control the shielding state of the switch module again, so that the first audio-video signal is shielded, and the second audio-video signal is output. Compared with the transmission interface in the prior art, the utility model provides an audio-visual signal transmission interface can let the user more convenient at the in-process that uses.
Therefore, the audio-video signal transmission interface provided by the utility model solves the problem of the transmission interface in the prior art, and generally has the functions of enabling all the video input signals to be looped out without damage and outputting the processed video input signals; however, the interface with lossless loop-out function and the processed interface for outputting are independent of each other, so that when a user uses the transmission interface in the prior art, the user needs to identify the specific interface function, which results in the technical problem of inconvenient use.
In addition, the switch module 1, the distribution module 2, the processing module 3 and the output port 4 are integrated on the same PCB, and only one output port 4 is arranged on the PCB; compared with the prior art in which two output interfaces are arranged, the audio-visual signal transmission interface provided by the utility model saves the space of the PCB occupied by one output port 4 (namely, one output interface in the prior art) and correspondingly reduces electronic components and circuits, thereby simplifying the design of the PCB; in actual production processing the utility model provides an during audio-visual signal transmission interface, can improve the machining efficiency of the integrated PCB board that has switch module 1, distribution module 2, processing module 3 and output port 4.
Furthermore, on the basis of the foregoing scheme, how to shield the first video signal or the second video signal becomes a technical problem to be solved.
The embodiment provides several solutions, specifically:
the first scheme is as follows: referring to fig. 1, the processing module 3 is further configured to output a control signal, where the control signal is output to the switch module 1, and the control signal is used to control the switch module 1 to selectively output the first video-audio signal or the second video-audio signal to the output port 4.
By adopting the first scheme, the processing module 3 can automatically select according to the preset control program, so that the user can form a 'fool' use effect in the actual use process. The preset control program can be stored in a memory, and the memory is electrically connected with the processing module 3; or the preset control program is directly packaged inside the processing module 3. The preset control program can automatically distinguish whether the second audio-video signal needs to be output or not when the information characteristics of the display equipment are received; if the judgment result is that the second audio-video signal needs to be output, the preset control program sends out the control signal and outputs the control signal to the switch module 1; if the judgment result is that the second audio-video signal is not needed to be output, the preset control program interrupts the control signal.
When the switch module 1 receives the control signal, the switch module 1 shields the first audio-video signal and outputs a second audio-video signal; on the contrary, if the switch module 1 loses the control signal, the switch module 1 shields the second audio-video signal and outputs the first audio-video signal or does not output any signal.
Adopt scheme one, its first audio-visual signal or second audio-visual signal's shielding function is through predetermineeing the control signal that control program sent and automatic selection, but whether need carry out the automation according to the display device's that plugs into information characteristic when sending control signal and distinguish to can make user's in-service use the utility model provides an audio-visual signal transmission interface is more convenient, and the result of use is best.
Scheme II: referring to fig. 3, a control switch 10 and/or a communication module 11 are also included;
the control switch 10 is electrically connected to the processing module 3, the control switch 10 is used for sending a first control instruction, and the first control instruction is transmitted to the processing module 3;
the communication module 11 is electrically connected to the processing module 3, the communication module 11 is configured to receive and forward a second control instruction, and the second control instruction is transmitted to the processing module 3;
when the first control instruction and the second control instruction are false at the same time, the processing module 3 interrupts the control signal;
when the first control instruction and/or the second control instruction is true, the processing module 3 outputs a control signal.
Wherein, if only the control switch 10 is provided, the control switch 10 should be electrically connected to the processing module 3; the processing module 3 outputs a low-voltage electrical signal to the control switch 10, and forms an on-off state of the low-voltage electrical signal by the on-state or off-state of the contact of the control switch 10. The low-voltage electrical signal is the first control command.
One of the ways of determining whether to output the control signal is a normally closed control way. If the contact of the control switch 10 is in a conducting state, the low-voltage electric signal is transmitted to the processing module 3 through the control switch 10, and the processing module 3 interrupts the control signal according to the low-voltage electric signal; if the contact of the control switch 10 is in the off state, the low-voltage electrical signal is interrupted by the control switch 10, the processing module 3 loses the low-voltage electrical signal, and the control signal is output.
The other way of judging whether to output the control signal is a normally open control way. If the contact of the control switch 10 is in the cut-off state, the low-voltage electric signal is interrupted in the control switch 10, and the processing module 3 loses the low-voltage electric signal, so that the control signal is interrupted; if the contact of the control switch 10 is in a conducting state, the low-voltage electrical signal is transmitted to the processing module 3 through the control switch 10, and the processing module 3 outputs a control signal according to the low-voltage electrical signal.
And, if only the communication module 11 is provided, the communication module 11 should be electrically connected to the processing module 3; the processing module 3 receives the second control instruction forwarded by the communication module 11, and determines whether the second control instruction is true or false. If the method is used for changing the first video signal or the second video signal to be displayed on the same display device, the preset control program needs to send a control instruction to the preset control program, and the preset control program can change whether the control signal is output or not through the control instruction. It should be understood that the control command therein should be a command transmitted to the preset control program from the outside, including but not limited to: a control command issued by clicking with a hardware device such as a keyboard or a mouse, a control command issued by a touch panel, or the like.
Also, if both the control switch 10 and the communication module 11 are provided, they should be electrically connected to the processing module 3. The processing module 3 can receive both the first control instruction and the second control instruction; at this time, the control switch 10 should be set to the normally open control mode, so that the processing module 3 can determine whether the first control command and the second control command are true or false. When the first control instruction is true and the second control instruction is false, the processing module 3 outputs a control signal according to the first control instruction; when the first control instruction is false and the second control instruction is true, the processing module 3 outputs a control signal according to the second control instruction; when the first control instruction and the second control instruction are both false, the processing module 3 interrupts the control signal; when the first control instruction and the second control instruction are both true, the processing module 3 outputs a control signal according to the first control instruction and the second control instruction.
Adopt scheme two, can with the utility model provides an audio-visual signal transmission interface sets up to fixed audio-visual signal transmission interface or portable audio-visual signal transmission interface according to specific use scene.
For example: if the audio-video signal transmission interface provided by the utility model is only arranged in a limited area for fixed use, then the audio-video signal transmission interface can be made into a pluggable board card component, and the board card component is arranged on a server or a host for use; at this time, the communication module 11 should be arranged on the board card component, so that when the board card component is arranged on the server or the host, the second control instruction sent remotely can be received through the communication module 11, and the second control instruction is transmitted into the processing module 3, thereby realizing the output of the first audio-video signal or the second audio-video signal.
For another example: if the audio-visual signal transmission interface provided by the utility model is arranged as a portable electrical device, then the audio-visual signal transmission interface can be arranged in the portable electrical device, and the output port 4 is arranged to be exposed on the electrical device; at this time, the electrical apparatus should be provided with a control switch 10, where the control switch 10 includes but is not limited to a mechanical switch or a touch switch, so that the electrical apparatus transmits the first control instruction from the processing module 3 to the processing module 3 through the control switch 10 in an on-off state, thereby outputting the first audio/video signal or the second audio/video signal.
The following steps are repeated: if the utility model provides an audio-visual signal transmission interface both can set up in limited region internal fixation use, can set up to portable using-way again, so, can be independent, just mobilizable node means with audio-visual signal transmission interface preparation. A node device may be understood as a 'router-like device'; the two difference is that the 'router is used for receiving and forwardding the network signal', and the utility model discloses an audio-visual signal transmission interface is used for receiving first audio-visual signal to export first audio-visual signal, or change first audio-visual signal into second audio-visual signal output through processing module 3. The node device can be independently arranged in a limited area for fixed use, such as: indoor outer large screen, studio, meeting room, desk, operating room, ward, monitor room, engineering command room, traffic command room etc. concrete environment can be portable again and carry by the staff, uses under site environment, for example: the system comprises a video studio, a news live broadcasting vehicle, a concert and the like, wherein the specific live environment needs live recording and needs an audio-video signal processing function.
Further, on the basis of all the foregoing schemes, in order to facilitate obtaining the first video-audio signal, in this embodiment, the following scheme is provided, which specifically includes:
referring to fig. 1 or fig. 3, the audio-video signal transmission interface further includes an input port 5;
the input port 5 is electrically connected to the distribution module 2, the input port 5 is used for receiving and forwarding the first audio-video signal, and the first audio-video signal is transmitted to the distribution module 2.
The signal source is arranged outside the video signal transmission interface and used for sending a first video signal, and the signal source is detachably connected to the input port 5 through a communication cable corresponding to the input port 5 so that the first video signal is transmitted to the input port 5; signal sources include, but are not limited to: the system comprises a camera, a memory or a server for storing video files; the first video and audio signal is transmitted to the distribution module 2 through the input port 5, and the distribution module 2 outputs the first video and audio signal to the switch module 1 and the processing module 3 respectively.
It should be understood that, if the signal source is arranged locally and the audio-video signal transmission interface is arranged locally, the signal source and the audio-video signal transmission interface can be directly connected by a communication cable; however, if the signal source is remotely located and the video signal transmission interface is locally located, the two signals need to communicate with each other through the network module, and then the receiving end of the network module is used as the signal source locally located, the receiving end is connected to the input interface through the communication cable, and the first video signal is transmitted to the input port 5 through the receiving end.
Further, on the basis of all the foregoing schemes, the present embodiment adds a transcoding module 6, which specifically includes:
referring to fig. 1 or fig. 3, the audio-video signal transmission interface further includes a transcoding module 6;
The transcoding module 6 is configured to obtain the first audio-video signal, and convert the signal format of the first audio-video signal into a signal format that needs to be displayed, so as to meet the display requirement. For example: if one or more of brightness, chromaticity, contrast, definition and highest resolution needs to be met, then the transcoding module 6 can convert the first audio-video signal with low brightness into the first audio-video signal with high brightness, convert the first audio-video signal with low chromaticity into the first audio-video signal with high chromaticity, convert the first audio-video signal with low contrast into the first audio-video signal with high contrast, convert the first audio-video signal with low definition into the first audio-video signal with high definition, and increase the highest resolution of the first audio-video signal to the highest resolution needed by composite display.
According to the format level of the first audio-video signal, the low-level format of the first audio-video signal can be converted into a high-level format through the transcoding module 6; similarly, the high-level format of the first audio-video signal can be converted into the low-level format by the transcoding module 6. According to the format level of the signal, a group of conversion directions of the signal format from the high-level format to the low-level format is given as follows: the DVI format is converted into RGBHV/VGA format, the RGBHV/VGA format is converted into HDTV format, the HDTV format is converted into SDI format, the SDI format is converted into Y, Pb and Pr format or Y, R-Y, B-Y format, Y, Pb and Pr format or Y, R-Y, B-Y format is converted into Y/C S-Video format, and the Y/C S-Video format is converted into Video composite Video format. According to the 'conversion direction from the high-level format to the low-level format', theoretically, the DVI format can be converted into any one of the formats thereafter, so as to meet the display requirement; when the transcoding module 6 is actually set up, the actual transcoding function should be planned in advance, for example: converting the DVI format into a Y, Pb, Pr format or a Y, R-Y, B-Y format; and, it should be avoided to set practically useless functions within transcoding module 6, such as: the DVI format is converted into a Video composite Video format.
In addition, according to the level of the broadcast standard of the first audio-video signal, in the process of migrating the low-level broadcast standard to the higher-level broadcast standard, the transcoding module 6 is also required to convert the format of the first audio-video signal. For example: in a low-level broadcast standard (such as standard definition video), the clock frequency of the first video and audio signal is 27MHz, and in a higher-level broadcast standard (such as high definition video), the clock frequency of a signal to be displayed is 148.5 MHz; through the transcoding module 6, the clock frequency of the first audio/video signal can be converted from 27MHz to 148.5MHz, so that the format of the first audio/video signal is changed, and the requirements of higher-level broadcast standards (such as high-definition video) are met.
Further, on the basis of the above-mentioned scheme with the transcoding module 6, the function of the processing module 3 is slightly changed, specifically:
referring to fig. 1 or fig. 3, the processing module 3 is configured to receive the transcoded first audio-video signal, convert the transcoded first audio-video signal into a second audio-video signal, and output the second audio-video signal to the switch module 1.
The transcoding module 6 is configured to transcode the format of the first audio/video signal, and actually shares a due transcoding function of the processing module 3; however, the processing module 3 also has a function of converting the first audio/video signal into a second audio/video signal. For example: one of the usage requirements for the method is to display the picture of the first video signal through a plurality of display screens, which requires the processing module 3 to 'cut' and 'convert' the first video signal, so that the first video signal is divided into at least two 'second video signals', when the at least two 'second video signals' are output to a plurality of display screens corresponding to the number through the processing module 3, one of the 'second video signals' is displayed on one display screen, and at this time, the display screens of all the display screens are combined together, and the first video signal is integrally displayed on one display device.
In addition, in all the above schemes, the processing module 3 also needs to assume the function of outputting the control signal to the switch module 1, so as to ensure whether the switch module 1 shields the first audio/video signal or the second audio/video signal.
Further, on the basis of all the foregoing schemes, the embodiment provides a more specific audio-visual signal transmission interface, which specifically includes:
referring to fig. 1 to 3, the audio-video signal transmission interface includes a switch module 1, a distribution module 2, a processing module 3, an input port 5, an output port 4, and a transcoding module 6;
Referring to fig. 2, the input port 5 is specifically an HDMI input port 5, and the output port 4 is an HDMI output port 4; the HDMI input port 5 is used for connecting with an external signal source, acquiring a first audio-video signal, which is an HDMI signal, and transmitting the first audio-video signal to the distribution module 2;
referring to fig. 2, the distribution module 2 is specifically an HDMI distributor, and the distribution module 2 can obtain the first audio-video signal and transmit the first audio-video signal to the transcoding module 6 and the switch module 1 respectively;
referring to fig. 2, the transcoding module 6 is specifically an HDMI Rx phy, and the transcoding module 6 is configured to obtain a first audio/video signal, convert the format of the first audio/video signal into a BT1120 format, and transmit the first audio/video signal in the BT1120 format to the processing module 3;
referring to fig. 2, the processing module 3 is specifically a main chip, and the processing module 3 is configured to obtain a first audio-video signal in the BT1120 format, convert the first audio-video signal in the BT1120 format into a second audio-video signal, and output the second audio-video signal to the switch module 1; meanwhile, the processing module 3 can also send out a control signal and transmit the control signal to the switch module 1;
referring to fig. 2, the switch module 1 is specifically an HDMI switch, and the switch module 1 can acquire the control signal, the first audio/video signal and the second audio/video signal and select one of the first audio/video signal and the second audio/video signal according to the control signal to output;
referring to fig. 2, the output port 4 is specifically an HDMI output port, the output port 4 is used for connecting a display device and acquiring a first audio/video signal or a second audio/video signal from the switch module 1, and the first audio/video signal or the second audio/video signal is output to the display device through the output port 4;
when the switch module 1 is in a first working state through the control signal, the first audio-video signal sequentially circulates along the input port 5, the distribution module 2, the switch module 1 and the output port 4, so that the first audio-video signal is displayed on the display device in a lossless output mode; when the switch module 1 is in the second working state through the control signal, the second audio-video signal circulates along the input port 5, the distribution module 2, the transcoding module 6, the processing module 3, the switch module 1 and the output module in sequence, so that the first audio-video signal is subjected to format conversion through the transcoding module 6, then is converted into the second audio-video signal through the processing module 3, and finally is displayed on the display device in an output mode which can adapt to the display requirement.
In one application scenario of this embodiment, the audio/video signal transmission interface is used as an input or output device; for example, the audio-video signal transmission interface is applied to departments/wards in the intelligent medical field, the HDMI input port 5 of the audio-video signal transmission interface is connected with an IP camera or a field host, and the audio-video signal transmission interface acquires an HDMI signal of the IP camera or the field host and outputs the HDMI signal through the output port 4 in a lossless loop-out output mode; for another example, the audio-visual signal transmission interface is applied to a conference room/conference center in the intelligent medical field, the HDMI input port 5 of the audio-visual signal transmission interface is used for acquiring a source signal, the HDMI output port 4 is connected with a display device, and the audio-visual signal transmission interface displays an HDMI signal or a BT1120 signal through the display device; if the display device needs to display the picture with the highest definition, the HDMI signal can be output to the display device through the output port 4 in a lossless loop-out mode; if the display device has a plurality of display screens, the BT1120 signal can be output to the plurality of display screens through the output port 4.
In another application scenario of this embodiment, the audio/video signal transmission interface is used as an input or output device; for example: applying the audio-video signal transmission interface to a control room in the field of intelligent transportation; the remote signal of the traffic site is transmitted to the control room through the network and is input to the input port 5 of the video-audio signal transmission interface; in one case, the output port 4 of the audio-visual signal transmission interface is connected with a high-definition display (such as a 2K or 4K display) or a spliced display screen arranged in an array; when the remote signal is only displayed by the high-definition display, the audio-video signal transmission interface can display the field signal on the high-definition display in a lossless loop-out mode; when the remote signals are displayed only through the displays arranged in an array mode, if the remote signals need to be displayed through the multiple displays, the audio-video signal transmission interface transcodes and divides the remote signals, then displays the processed remote signals on any display screen in a one-to-one correspondence mode, and if the remote signals need to be displayed through one of the multiple displays, the audio-video signal transmission interface displays the remote signals on one of the multiple displays in a non-loss mode. In addition, the audio-visual signal transmission interface can also be connected with an audio-visual server, historical audio-visual signals provided by the audio-visual server are output to a high-definition display or a spliced display screen arranged in an array through the audio-visual signal transmission interface, and the specific display mode of the audio-visual signal transmission interface is the same as that of the remote signal display interface.
On the basis of all the schemes with the audio-video signal transmission interface, in the embodiment, the audio-video signal transmission interface is manufactured into a board card shape; the board-shaped video and audio signal transmission interface is used as plug-and-play equipment arranged in a host or a server.
On the basis of all the schemes with the audio-visual signal transmission interface, in the embodiment, the audio-visual signal transmission interface is made into a portable device, wherein an input port 5 and an output port 4 of the audio-visual signal transmission interface are respectively exposed on a shell of the portable device, so that an external signal source and a display device can be conveniently connected; the portable device is used as a mobile plug and play device in a remote site or in a local site.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (8)
1. The audio-video signal transmission interface is characterized by comprising a switch module, a distribution module, a processing module and an output port;
the distribution module is electrically connected with the switch module and the processing module respectively, and is used for acquiring a first audio-video signal which is output to the switch module and the processing module respectively;
the processing module is electrically connected with the switch module and is used for outputting a second audio-video signal which is output to the switch module;
the switch module is electrically connected with the output port and is used for selectively outputting the received first audio-video signal or the received second audio-video signal to the output port.
2. The interface of claim 1, wherein the processing module is further configured to output a control signal, the control signal is output to the switch module, and the control signal is configured to control the switch module to selectively output the first video signal or the second video signal to the output port.
3. The video-audio signal transmission interface of claim 2, further comprising a control switch and/or a communication module;
the control switch is electrically connected with the processing module, and is used for sending a first control instruction which is transmitted to the processing module;
the communication module is electrically connected with the processing module, and is used for receiving and forwarding a second control instruction which is transmitted to the processing module;
when the first control instruction and the second control instruction are false at the same time, the processing module interrupts the control signal;
and when the first control instruction and/or the second control instruction are true, the processing module outputs the control signal.
4. The video-audio signal transmission interface of claim 1, further comprising an input port;
the input port is electrically connected with the distribution module, the input port is used for receiving and forwarding the first audio-video signal, and the first audio-video signal is transmitted to the distribution module.
5. The video-audio signal transmission interface according to any one of claims 1 to 4, further comprising a transcoding module;
the transcoding module is electrically connected between the distribution module and the processing module, and is used for transcoding the format of the received first audio-video signal and outputting the transcoded first audio-video signal to the processing module.
6. The interface of claim 5, wherein the processing module is configured to receive the transcoded first video signal, convert the transcoded first video signal into the second video signal, and output the second video signal to the switch module.
7. The video-audio signal transmission interface according to claim 5, wherein the input port and the output port are HDMI ports;
the input port is used for receiving and forwarding the first audio-video signal, and the first audio-video signal is a first HDMI signal;
the distribution module is used for outputting the first HDMI signal to the transcoding module and the switch module respectively;
the transcoding module is used for transcoding the format of the first HDMI signal and outputting the transcoded first HDMI signal to the processing module;
the processing module is used for converting the transcoded first HDMI signal into a second audio-video signal, wherein the second audio-video signal is a second HDMI signal, and the second HDMI signal is output to the switch signal;
the output port is used for outputting the first HDMI signal or the second HDMI signal.
8. The interface of claim 7, wherein the transcoding module is further configured to transcode the first HDMI signal into BT1120 format, and output the transcoded first HDMI signal to the processing module.
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|---|---|---|---|
| CN201922330801.5U CN210444395U (en) | 2019-12-23 | 2019-12-23 | Video and audio signal transmission interface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922330801.5U CN210444395U (en) | 2019-12-23 | 2019-12-23 | Video and audio signal transmission interface |
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| CN210444395U true CN210444395U (en) | 2020-05-01 |
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