CN210225630U - Audio and video transmission device, video processing device and multimedia playing device - Google Patents
Audio and video transmission device, video processing device and multimedia playing device Download PDFInfo
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Abstract
The embodiment of the utility model discloses audio frequency and video transmission device, video processing device and multimedia playing device. The audio and video transmission device comprises an audio and video input interface, an input side physical layer transceiving controller, an audio and video streaming data stream receiver, an audio and video streaming data stream transmitter, an output side physical layer transceiving controller and an audio and video output interface; the input side physical layer transceiving controller is connected between the audio and video input interface and the audio and video streaming data stream receiver; the audio and video streaming data receiver is connected with the audio and video streaming data transmitter; and the output side physical layer transceiving controller is connected between the audio and video streaming data stream transmitter and the audio and video output interface. The embodiment of the utility model provides a can support audio frequency and video simultaneous transmission.
Description
Technical Field
The utility model relates to an audio frequency and video transmission technical field especially relate to an audio-visual screen transmission device and a multimedia playing device.
Background
The input interface compatibility and processing capability in the video processing equipment are very important, and although the HDMI2.0 interface supports transmission of audio and video transmission, the existing equipment embeds video and audio into a communication protocol through a high-speed serial bus, so that the transmission of audio and video is completed through the communication protocol, and the mode depends on the communication protocol and the high-speed serial bus to realize the transmission of audio and video.
Moreover, current video processing devices can only support video transmission, and cannot support transmission of video and audio simultaneously.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides an audio and video transmission device, a video processing device and a multimedia playing device effectively solve the problem that audio frequency and video can not be transmitted simultaneously.
On the one hand, the embodiment of the utility model provides an audio and video transmission device, include, audio and video input interface, input side physical layer transceiver controller, audio and video STREAMING data stream receiver, audio and video STREAMING data stream transmitter, output side physical layer transceiver controller and audio and video output interface; the input side physical layer transceiving controller is connected between the audio and video input interface and the audio and video streaming data stream receiver; the audio and video streaming data receiver is connected with the audio and video streaming data transmitter; and the output side physical layer transceiving controller is connected between the audio and video streaming data stream transmitter and the audio and video output interface.
According to the embodiment of the disclosure, audio and video source data in a TMDS data format is acquired through three components, namely the audio and video input interface, the input side physical layer transceiving controller and the audio and video streaming data receiver, the audio and video source data are decoded to extract a video data stream and an audio data stream, and then the video data stream and the audio data stream are converted into TMDS data identified by video playing equipment through the audio and video streaming data transmitter, the output side physical layer transceiving controller and the audio and video output interface, so that video and audio can be transmitted simultaneously without depending on a high-speed serial bus and a communication protocol.
In one embodiment, the input side physical layer transceiving controller has a differential signal input terminal and a streaming data stream output terminal, and the differential signal input terminal is connected to the audio/video input interface; the audio and video streaming data receiver is provided with a streaming data stream input end and an audio and video separation data stream output end, the streaming data stream input end is connected with the streaming data stream output end of the input side physical layer transceiving controller, and the audio and video separation data stream output end is connected with the audio and video streaming data stream transmitter.
In one embodiment, the audio/video streaming data transmitter has an audio/video separation data stream input terminal and a streaming data stream output terminal, and the audio/video separation data stream input terminal is connected to the audio/video separation data stream output terminal of the audio/video streaming data receiver; the output side physical layer transceiving controller is provided with a streaming data stream input end and a differential signal output end, the streaming data stream input end is connected with the streaming data stream output end of the audio and video streaming data stream transmitter, and the differential signal output end is connected with the audio and video output interface.
In this embodiment, the audio/video streaming data receiver separates TMDS data to extract a video data stream and an audio data stream therein, and the audio/video streaming data transmitter can convert the video data stream and the audio data stream into TMDS data and transmit the TMDS data; the simplified TMDS source data is realized in one module, and the simplified TMDS data is transmitted and realized in the other module, so that the data processing and transmission speed is improved.
On the one hand, the embodiment of the utility model provides an audio and video transmission device, include, audio and video input interface, programmable logic device and audio and video output interface; the programmable logic device is provided with an input side physical layer transceiving controller, an audio and video streaming data stream receiver, an audio and video streaming data stream transmitter and an output side physical layer transceiving controller; the input side physical layer transceiving controller is connected with the output side physical layer transceiving controller through the audio and video streaming data receiver and the audio and video streaming data transmitter in sequence; the programmable logic device is also provided with a differential signal input end and a differential signal output end, the differential signal input end is connected with the audio and video input interface, and the differential signal output end is connected with the audio and video output interface.
In the embodiment of the disclosure, an input-side physical layer transceiving controller, an audio/video streaming data stream receiver, an audio/video streaming data stream transmitter and an output-side physical layer transceiving controller are integrated by a programmable logic device, and the programmable logic device simultaneously realizes the function of connecting a high-definition multimedia interface and a video playing device.
On the one hand, the embodiment of the utility model provides an audio and video transmission device, include, audio and video input interface, first programmable logic device, second programmable logic device and audio and video output interface; the first programmable logic device is provided with a differential signal input end and an audio and video separation data packet serial output end, the differential signal input end is connected with an audio and video input interface, and the audio and video separation data packet serial output end is connected with the second programmable logic editor; the second programmable logic device is provided with an audio and video separation data packet serial input end and a differential signal output end, the audio and video separation data packet serial input end is connected with the first programmable logic device, and the differential signal output end is connected with the audio and video output interface.
According to the embodiment of the disclosure, the audio/video input interface and the first programmable logic device are used for connecting audio/video data transmission and acquiring audio/video source data in a TMDS data form, converting and decoding the TMDS data, extracting video stream data and audio stream data in the TMDS data, packaging the video stream data and the audio stream data, and transmitting the video stream data and the audio stream data to the second programmable logic device, and the second programmable logic device acquires a data packet, analyzes the data packet, extracts the video stream data and the audio stream data in the data packet, converts the data packet into the TMDS data, and transmits the TMDS data to the. When one programmable logic device is adopted to simultaneously implement receiving TMDS data and transmitting TMDS data, the load of one programmable logic device is very large, and the playing effect of the video playing equipment is influenced; the two programmable logic devices are adopted to respectively implement receiving TMDS data and sending TMDS data, the load shared by the two programmable logic devices is small, and the playing effect of the video playing equipment is good.
On the other hand, the embodiment of the present invention provides a video processing apparatus, the video processing apparatus includes a processor, a data input interface and a data output interface, and the video processing apparatus further has the audio/video transmission apparatus as described above; the processor is connected with the audio and video transmission device; one of the data input interfaces of the video processing device is the audio and video input interface; one of the data output interfaces of the video processing device is the audio and video output interface.
On the other hand, the embodiment of the present invention provides a multimedia playing device, which includes a display screen, a processor and a data input interface, wherein the multimedia playing device further includes the audio/video transmission device as described above; the processor is connected with the audio and video transmission device; one of the data input interfaces of the multimedia playing device is the audio and video input interface; the data input end of the display screen is connected with the audio and video output interface
The above embodiments have the following advantages or beneficial effects: under the condition of not depending on a communication protocol and a high-speed serial bus, the audio and video transmission can be simultaneously supported, and the video playing equipment can simultaneously play audio and video.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an audio/video transmission device according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an audio/video transmission device according to a second embodiment of the present invention.
Fig. 3 is a schematic diagram of the architecture of the data packet in the second embodiment.
Fig. 4 is a schematic structural diagram of an audio/video transmission device according to a third embodiment of the present invention.
Fig. 5 is a schematic structural diagram of an audio/video transmission device according to a fourth embodiment of the present invention.
Fig. 6 is a schematic diagram of a connection pin of the first programmable logic device in the fourth embodiment.
Fig. 7 is a schematic diagram of a connection pin of the first programmable logic device in the fourth embodiment.
Fig. 8 is a schematic diagram of a connection pin of a second programmable logic device in a fourth embodiment.
Fig. 9 is a schematic diagram of a connection pin of a second programmable logic device in a fourth embodiment.
Fig. 10 is a schematic diagram of a connection pin of a second programmable logic device in the fourth embodiment.
Fig. 11 is a schematic diagram of pins connecting a first programmable logic device to a second programmable logic device in a fourth embodiment.
Fig. 12 is a schematic diagram of pins of a fourth embodiment of a second programmable logic device connected to a first programmable logic device.
Fig. 13 is a schematic structural diagram of a video processing apparatus according to a fifth embodiment of the present invention.
Fig. 14 is a schematic structural diagram of a multimedia playing device according to a sixth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1, it is an audio and video transmission device provided in a first embodiment of the present invention; the audio/video transmission device 10 includes, for example, an audio/video input interface 11, an input-side physical layer transceiving controller 12, an audio/video streaming data receiver 13, an audio/video streaming data transmitter 14, an output-side physical layer transceiving controller 15, and an audio/video output interface 16, which are connected in sequence.
The audio/video input Interface 11 is connected between an audio/video data transmission line and the input side physical layer transceiver controller 12, the audio/video data transmission line provides TMDS (Transition-minimized differential signaling) data minimized differential signal transmission data stream to the audio/video input Interface 11, the audio/video data transmission line is, for example, an HDMI2.0(high definition Multimedia Interface) high-definition Multimedia data line, the audio/video input Interface 11 is connected with the input side physical layer transceiver controller 12 through an output pin, and the TMDS data transmitted by the HDMI2.0 is transmitted to the input side physical layer transceiver controller 12 through the audio/video input Interface 11. For example, the audio/video input interface 11 is an HDMI input chip, the HDMI input chip is provided with an HDMI interface and a differential signal output end, the HDMI interface is connected to an HDMI2.0 data line, the differential signal output end is connected to the input-side physical layer transceiver controller 12, the HDMI input chip obtains TMDS data transmitted by the HDMI2.0 data line and transmits the TMDS data to the input-side physical layer transceiver controller 12 through an output pin, and the HDMI data transmitted by the HDMI2.0 data line is in a TDMS data form.
The input-side Physical Layer transceiver controller 12 is, for example, a Physical Layer (Physical Layer) of an FPGA (Field-Programmable Gate Array) chip, and the FPGA chip is a Field-Programmable Gate Array. The input pins of the input side physical layer transceiving controller 12 are connected with the output pins of the audio/video input interface 11 to obtain TMDS data, and the input side physical layer transceiving controller 12 converts the TMDS data into a parallel stream data stream and outputs the parallel stream data stream through the output pins. For example, the input-side physical layer transceiver controller 12 is a physical layer of an FPGA chip, the input pin of the input-side physical layer transceiver controller 12 is a differential signal input end, the output pin is a streaming data output end, the differential signal input end of the input-side physical layer transceiver controller 12 is connected to the differential signal output end of the audio/video input interface 11, the input-side physical layer transceiver controller 12 acquires HDMI data in a TMDS data format transmitted by the audio/video input interface 11, the input-side physical layer transceiver controller 12 restores the TDMS data to a high-speed serial streaming data stream and converts the high-speed serial streaming data stream into a parallel streaming data stream, and the streaming data output end of the input-side physical layer transceiver controller 12 outputs the parallel streaming data stream.
An output pin of the input-side physical layer transceiving controller 12 is connected to an input pin of the audio/video streaming data receiver 13, the audio/video streaming data receiver 13 receives a parallel streaming data stream output by the input-side physical layer transceiving controller 12, and the audio/video streaming data receiver 13 decodes the received data to obtain independent video stream data and audio stream data and outputs the independent video stream data and the audio stream data through the output pin. For example, the audio/video streaming data receiver 13 is, for example, an HDMI receiver, for example, a chip component integrated on an FPGA chip, the audio/video streaming data receiver 13 has a streaming data stream input end and an audio/video separation data stream output end, the streaming data stream input end is connected to the streaming data stream output end of the input-side physical layer transceiver controller 12, the audio/video streaming data receiver 13 receives and decompresses parallel streaming data streams transmitted by the input-side physical layer transceiver controller 12 to obtain independent video stream data and audio stream data, and the audio/video streaming data receiver 13 outputs the video stream data and the audio stream data through the audio/video separation data stream output end.
In this embodiment, since the parallel streaming data stream is data obtained by converting TMDS data, the parallel streaming data stream includes all data of TMDS, and the audio/video streaming data receiver 13 decodes the parallel streaming data stream to obtain only video stream data and audio stream data therein, without using other data obtained by decoding the parallel streaming data stream.
In this embodiment, the audio/video separation data stream output end of the audio/video streaming data receiver 13 is, for example, 1 data transmission channel, and video stream data and audio stream data are transmitted at intervals through the data transmission channel, for example, the data transmission channel transmits a segment of video stream data a, the video stream data a is followed by a segment of audio stream data B corresponding to the video stream data a, the audio stream data B is followed by a segment of video stream data C, and so on.
In this embodiment, the audio/video separation data stream output end of the audio/video streaming data receiver 13 is, for example, 2 data transmission channels, which are respectively a video streaming data transmission channel and an audio streaming data transmission channel, for example, the video streaming data transmission channel outputs independent video streaming data, and the audio streaming data transmission channel outputs independent audio streaming data.
An input pin of the audio/video streaming data transmitter 14 is connected to an output pin of the audio/video streaming data receiver 13, the audio/video streaming data transmitter 14 receives independent video stream data and independent audio stream data transmitted by the audio/video streaming data receiver 13, the audio/video streaming data transmitter 14 converts the video stream data and the audio stream data into parallel streaming data streams, and the audio/video streaming data transmitter 14 outputs the parallel streaming data streams through the output pin. For example, the audio/video streaming data transmitter 14 is an HDMI transmitter, the HDMI transmitter is a chip component integrated on an FPGA chip, the audio/video streaming data transmitter 14 includes an audio/video separation data stream input end and a streaming data stream output end, the audio/video streaming data stream input end is connected to the audio/video streaming data stream output end of the audio/video streaming data receiver 13, the audio/video streaming data transmitter 14 receives the independent video stream data and audio stream data output by the audio/video streaming data receiver 13, encodes the independent video stream data and audio stream data and converts the independent video stream data and audio stream data into a parallel streaming data stream, and then outputs the parallel streaming data stream through the streaming data stream output end.
In one embodiment, the audio/video separation data stream input end of the audio/video streaming data stream transmitter 14 is 1 or 2 data transmission channels, and the 1 or 2 data transmission channels are correspondingly connected to the 1 or 2 data transmission channels of the audio/video separation data stream output end of the audio/video streaming receiver 13 to complete data transmission.
The output side physical layer controller 15 is, for example, a physical layer of an FPGA chip, an input pin of the output side physical layer transceiver controller 15 is connected to an output pin of the audio/video streaming data transmitter 14 to obtain a parallel streaming data stream, and the output side physical layer transceiver controller 15 converts the parallel streaming data stream into TMDS data and outputs the TMDS data through the output pin. For example, the output side physical layer transceiver controller 15 is a physical layer of an FPGA chip, an input pin of the output side physical layer transceiver controller 15 is a streaming data input end, an output pin is a differential signal input end, the streaming data input end of the output side physical layer transceiver controller 15 is connected to a streaming data output end of the audio/video streaming data transmitter 14, the output side physical layer transceiver controller 15 obtains a parallel streaming data stream output by the audio/video streaming data transmitter 14, the parallel streaming data stream includes video stream data and audio stream data, and the output side physical layer transceiver controller 15 converts the parallel streaming data stream into TMDS data and outputs the TMDS data through the differential signal output end.
An input pin of the audio/video output interface 16 is connected with an output pin of the output side physical layer transceiving controller 15, and the audio/video output interface 16 receives TMDS data output by the output side physical layer transceiving controller 15 and outputs the TMDS data to the video playing device. For example, the audio/video output interface 16 is an HDMI output chip, the audio/video output interface 16 has a differential signal input end, the differential signal input end is connected to a differential signal output end of the output-side physical layer transceiver controller 15, the audio output interface 16 receives TMDS data transmitted by the output-side physical layer transceiver controller 15, the audio output interface 16 is used to connect a video playing device, the video playing device receives the TMDS data and plays its content, and the video playing device is, for example, an LED display screen.
In one embodiment, the high definition multimedia receiver 13 is connected to the high definition multimedia transmitter 14 through an advanced extensible protocol Interface (AXI). The advanced extensible protocol bus converts the video stream data and the audio stream data, which are respectively independent, into an independent AXIS (advanced extensible interface stream) video data stream and an AXIS audio data stream, respectively, and the advanced extensible protocol bus transmits the AXIS video data stream and the AXIS audio data stream to the high definition multimedia transmitter 13. For example, the high-definition multimedia receiver 13 has an audio/video separation data stream output terminal, the high-definition multimedia transmitter 14 has an audio/video separation data stream input terminal, and the AXI bus connects the audio/video separation data output terminal and the audio/video separation data input terminal.
[ second embodiment ]
Referring to fig. 2, it is another audio/video transmission device according to a second embodiment of the present invention; the audio-video transmission device 10 further includes, for example, a first serializer and deserializer 17 and a second serializer and deserializer 18 on the basis of the first embodiment, and the audio-video streaming data receiver 13 is connected to the audio-video streaming data transmitter 14 sequentially through the first serializer and deserializer 17 and the second serializer and deserializer 18.
The first serializer and deserializer 17 has, for example, an audio/video separation data input terminal connected to the audio/video separation data output terminal of the audio/video streaming data receiver 13 and an audio/video separation data packet serial output terminal, and the first serializer and deserializer 17 receives and packetizes the video stream data and the audio stream data which are respectively independent and output by the audio/video streaming data receiver 13 and outputs the data packet to the second serializer and deserializer 18. The first deserializer 17 includes, for example, a serializer, or includes, for example, a serializer and a deserializer, and packetizes the video stream data and the audio stream data, which are independent of each other, into a packet, and then outputs the packet to the second deserializer 18.
The packetizing process of the first deserializer 17 is, for example, packetizing a continuous segment of video stream data and audio stream data corresponding to the segment of video stream data, for example, dividing a long segment of video stream data into n continuous segments of video stream data, thereby obtaining n continuous segments of audio stream data corresponding to the n continuous segments of video stream data, and finally generating n continuous packets. Referring to fig. 3, the data packet 30 includes, for example, a header 31, an AV data stream 32, side information 33, and a trailer 34. The header 31 indicates the start of a data packet, the AV data stream 32 includes a segment of video stream data and audio stream data corresponding to the segment of video stream data, the auxiliary information 33 includes CTS (cycle Time stamp) information, the CTS is a cycle Time stamp, and an audio reproduction parameter N, and the trailer 24 indicates the end of the data packet.
The second deserializer 18 has, for example, an audio/video separation data output end and an audio/video separation data packet serial input end, where the audio/video separation data packet serial input end is connected to the audio/video separation data packet serial output end of the first deserializer 17, where the audio/video separation data output end is connected to the audio/video separation data input end of the audio/video streaming data transmitter 14, the second deserializer 18 receives the data packet output by the first deserializer 17 and parses the data packet to obtain independent video stream data and audio stream data in the data packet, and obtains continuous video stream data and audio stream data through parsing of the continuous data packet, and the second deserializer 18 includes, for example, a deserializer or a serializer and a deserializer.
In one embodiment, an audio/video separation data stream output end of the audio/video streaming data receiver 13 is connected to an audio/video separation data stream input end of the first serializer 17 through an AXI bus, the AXI bus converts the video stream data and the audio stream data into an AXIs video data stream and an AXIs audio data stream respectively and transmits the same to the first serializer 17, the first serializer 17 packages the obtained AXIs video data stream and the AXIs audio data stream to obtain a data packet 30, an AV data stream 32 in the data packet 30 includes an AXIs video data stream and an AXIs audio data stream, and the first serializer 17 transmits the data packet 30 to the second serializer 18 through a video separation data packet serial output end.
The second deserializer 18 receives the data packet 30 transmitted by the first deserializer 17 through the video separation data packet serial input end, and parses the data packet 30 to obtain a corresponding packet header 31, an AV data stream 32, auxiliary information 33 and a packet tail 34; wherein the auxiliary information 33 is used to calculate the sampling frequency fs from 128 fs/CTS, where ftmds is the transmission clock. The second deserializer 18 obtains an AV data stream 32 therein, the AV data stream 32 includes an AXIS Video data stream and an AXIS Audio data stream, an Audio/Video separation data stream output end of the second deserializer 18 is connected with an Audio/Video separation data input end of the Audio/Video streaming data stream transmitter 14 through an AXI bus, and the second deserializer 18 transmits the AXIS Video data stream and the AXIS Audio data stream to the Audio/Video streaming data stream transmitter 14 through the AXI bus.
[ third embodiment ]
Referring to fig. 4, which is another audio/video transmission apparatus provided in the third embodiment of the present invention, the audio/video transmission apparatus 10 includes, for example, an editable logic device 12, an audio/video input interface 11, and an audio/video output interface 13; the audio/video input interface 11 is connected with the audio/video output interface 13 through an editable logic device 12.
The editable logic device 12 is, for example, an FPGA chip, and the editable logic device 12 has, for example, a differential signal input end and a differential signal output end, where the differential signal input end is connected to the audio/video input interface 11, and the differential signal output end is connected to the audio/video output interface 13; the programmable logic device 12 has, for example, an input-side physical layer transceiving controller 12-1, an audio/video streaming data receiver 12-2, an audio/video streaming data transmitter 12-3, and an output-side physical layer transceiving controller 12-4, which are connected in sequence, where the audio/video input interface 11 is used to connect audio/video data lines, the audio/video data lines are, for example, HDMI data lines, the audio/video output interface 13 is used to connect video playing equipment, and the video playing equipment is, for example, an LED display screen.
The audio/video input interface 11, the input side physical layer transceiver controller 12-1, the audio/video streaming data receiver 12-2, the audio/video streaming data transmitter 12-3, the output side physical layer transceiver controller 12-4 and the audio/video output interface 13 are described in detail in the first embodiment of the present invention, and will not be described here.
In one embodiment, for example, the inventor adopts an FPGA chip of XC7K325TFFG900-2 type as the programmable logic device 12, a differential signal input end of the FPGA chip is connected to an HDMI input chip, the HDMI input chip is used as an audio/video input interface 11, the audio/video input interface 11 is connected to an HDMI2.0 data line and obtains HDMI data in a TMDS data form transmitted by the HDMI2.0 data line, the FPGA chip receives the TMDS data and outputs the TMDS data through an input side physical layer transceiving controller 12-1, an audio/video streaming data receiver 12-2, an audio/video streaming data transmitter 12-3 and an output side physical layer transceiving controller 12-4 on the FPGA chip, wherein the output TMDS data only includes video stream data and audio stream data, a differential signal output end of the FPGA chip is connected to an HDMI output chip, the HDMI output chip is used as an audio/video output interface 13, the HDMI output chip is connected to an LED display, the LED display screen displays the content of the TMDS data.
[ fourth example ] A
Referring to fig. 5, it is another audio/video transmission apparatus provided by the present invention, the audio/video transmission apparatus includes an audio/video input interface 11, a first editable logic device 12, a second editable logic device 13 and an audio/video output interface 14, which are connected in sequence.
The first editable logic device 12 has, for example, a differential signal input terminal and a separate data packet serial output terminal, where the differential signal input terminal is connected to the audio/video input interface 11; the second editable logic device 13 has, for example, a separate packet serial input connected to the separate packet serial output of the first editable logic device 12 and a differential signal output connected to the audio/video output interface 14.
In one embodiment, the first editable logic device 12 has, for example, an input side physical layer transceiving controller 12-1, an audio video streaming data receiver 12-2 and a first serializer/deserializer 12-3 connected in sequence, and the second editable logic device 13 has, for example, a second serializer/deserializer 13-1, an audio video streaming data transmitter 13-2 and an output side physical layer transceiving controller 13-3.
The audio/video input interface 11, the input side physical layer transceiving controller 12-1, the audio/video streaming data stream receiver 12-2, the audio/video streaming data stream transmitter 13-2, the output side physical layer transceiving controller 13-3 and the audio/video output interface 14 have been described in detail in the above-described first embodiment, and will not be described again here. The first serializer 12-3 and the second serializer 13-1 have been described in detail in the above second embodiment and will not be described here.
In one implementation manner of this embodiment, the first programmable logic device 12 and the second programmable logic device 13 both use FPGA chips with a model number of XC7K325TFFG900-2 or FPGA chips with a model number of XC7K410TFFG 900-2.
Referring to fig. 6 to 7, for example, the first programmable logic device 12 is connected to an HDMI input chip, the HDMI input chip is used as the audio/video input interface 11, and the connection pin of the first programmable logic device 12 and the HDMI input chip includes:
data and clock channels: HDMI _ RX2_ P, HDMI _ RX1_ P, HDMI _ RX0_ P, HDMI _ RXC _ P and HDMI _ RX2_ N, HDMI _ RX1_ N, HDMI _ RX0_ N, HDMI _ RXC _ N.
Ddc (display Data channel) channel: HDMI _ IN _ SCL, HDMI _ IN _ SDA. The DDC channel is a display data channel.
Hot plug signal: HDMI _ HPD _ IN.
Reference clock: MGT _ a116_ CLK0_ P, MGT _ a116_ CLK0_ N.
Referring to fig. 8 to 10, for example, the connection of the second programmable logic device 13 to the HDMI output chip, the HDMI output chip being used as the audio/video output interface 14, and the connection of the second programmable logic device 13 to the connection pin of the HDMI output chip includes:
data and clock channels: HDMI _ OUT _ TX2_ P, HDMI _ OUT _ TX1_ P, HDMI _ OUT _ TX0_ P, HDMI _ LVDS _ OUT _ TXC _ P and HDMI _ OUT _ TX2_ N, HDMI _ OUT _ TX1_ N, HDMI _ OUT _ TX0_ N, HDMI _ LVDS _ OUT _ TXC _ N.
DDC channel: FPGA _ HDMI _ OUT _ CFG _ SCL and FPGA _ HDMI _ OUT _ CFG _ SDA.
Hot plug signal: FPGA _ HDMI _ OUT.
Reference clock: MGT _ B116_ CLK0_ P and MGT _ B116_ CLK0_ N.
Referring to fig. 11-12, schematic diagrams of the connection pins between the first programmable logic device 12 and the second programmable logic device 13.
Fig. 11 is a schematic diagram of a connection pin of the first programmable logic device 12, and the pin of the first programmable logic device 12 connected to the second programmable logic device 13 includes:
data channel: FPGA _ A _ GTX1_ TXP0, FPGA _ A _ GTX1_ TXP1, FPGA _ A _ GTX1_ TXP2, FPGA _ A _ GTX1_ TXP3, FPGA _ A _ GTX1_ TXN0, FPGA _ A _ GTX1_ TXN1, FPGA _ A _ GTX1_ TXN2, FPGA _ A _ GTX1_ TXN 3.
Reference clock: MGT _ a117_ CLK0_ P and MGT _ a117_ CLK0_ N.
Fig. 12 is a schematic diagram of a connection pin of the second programmable logic device 13, and the connection pin of the second programmable logic device 13 to the first programmable logic device 12 includes:
data channel: FPGA _ B _ GTX1_ RXP0, FPGA _ B _ GTX1_ RXP1, FPGA _ B _ GTX1_ RXP2, FPGA _ B _ GTX1_ RXP3, FPGA _ B _ GTX1_ RXN0, FPGA _ B _ GTX1_ RXN1, FPGA _ B _ GTX1_ RXN2, FPGA _ B _ GTX1_ RXN 3.
Reference clock: MGT _ B118_ CLK0_ P and MGT _ B117_ CLK0_ N.
[ fifth embodiment ]
Referring to fig. 13, which is a video processing apparatus according to a fifth embodiment of the present invention, a video processing apparatus 10, for example, has an audio/video transmission apparatus 11 according to any one of the first embodiment, the second embodiment, the third embodiment, or the fourth embodiment, and the video processing apparatus 10, for example, further has a processor 12, a data input interface 13, and a data output interface 14; the audio and video transmission device 11 is connected, and the processor 12 is also connected with the data input interface 13 and the data output interface 14.
The data input interface 13 and the data output interface 14 are, for example, ttl (transistor logic) interfaces, the processor 12 is, for example, an arm (advanced RISC machines) processor, the data input interface 13 has a plurality of input ports for receiving data, one of the input ports is an audio/video input interface 11-1 of the audio/video transmission apparatus 11, the data output interface 14 has a plurality of output ports for outputting data, and one of the output ports is an audio/video output interface 11-2 of the audio/video transmission apparatus 11.
The audio/video input interface 11-1 of the video processing device 10 is used for connecting the audio/video data transmission line 8, the audio/video data transmission line 8 is, for example, an HDMI2.0 data line, and the audio/video output interface 11-2 of the video processing device 10 is used for connecting the video playing device 9.
The audio-visual transmission device 10 has been described in detail in the above embodiments 1 to 4 and will not be described here.
In one embodiment, the video processing apparatus 100 is, for example, an LED video playing box, the audio/video data transmission line 8 is, for example, a high-definition multimedia interface, and the video playing device 9 is, for example, an LED display screen. The audio and video input interface 11-1 acquires TMDS data, the audio and video output interface 11-2 sends the TMDS data to the LED display screen, and the LED display screen receives the TMDS data and plays corresponding contents.
The video processing apparatus 100 in the present embodiment may exemplarily be a set-top box or a video processor.
[ sixth embodiment ]
Referring to fig. 14, which is a multimedia playing apparatus according to a sixth embodiment of the present invention, a multimedia playing apparatus 10, for example, has any one of the audio/video transmission apparatuses 11 described in embodiments 1 to 4, and the multimedia playing apparatus 10, for example, further has a display 12, a data input interface 13, and a processor 14; the data input interface 13 is connected with the processor 14, the audio and video transmission device 11 is connected with the processor 14, and the audio and video output interface 11-2 of the audio and video transmission device 11 is connected with the data input end of the display screen 12.
The data input interface 13 is, for example, a TTL interface, the processor 14 is, for example, an ARM processor, and the display 12 is, for example, an LED liquid crystal display; the data input interface 13 has, for example, a plurality of input ports for receiving data, one of which is the audio-visual input interface 11-1 of the audio-visual input device 11.
The audio/video transmission device 11 is described in detail in the above embodiments 1 to 4, and will not be described here.
In one embodiment, the audio/video input interface 11 of the multimedia playing apparatus 10 is connected to the audio/video data transmission line 9, the audio/video data transmission line 9 is, for example, an HDMI2.0 connection line, the multimedia playing apparatus 10 receives HDMI data in the form of TMDS data transmitted by the HDMI2.0 connection line, the audio/video input interface 11-1 of the audio/video transmission apparatus 11 receives the TMDS data, converts the TMDS data, and outputs the TMDS data through the audio/video output interface 11-2, and the display screen 12 receives the TMDS data output by the audio/video output interface 12 and plays the content of the TMDS data.
The video processing apparatus 10 in the present embodiment may exemplarily be a television or the like.
In the several embodiments provided in the present disclosure, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of one logic function, and an actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. An audio-video transmission device, comprising: the device comprises an audio and video input interface, an input side physical layer transceiving controller, an audio and video streaming data stream receiver, an audio and video streaming data stream transmitter, an output side physical layer transceiving controller and an audio and video output interface;
the input side physical layer transceiving controller is connected between the audio and video input interface and the audio and video streaming data stream receiver;
the audio and video streaming data receiver is connected with the audio and video streaming data transmitter;
and the output side physical layer transceiving controller is connected between the audio and video streaming data stream transmitter and the audio and video output interface.
2. Audio-visual transmission device according to claim 1,
the input side physical layer transceiving controller is provided with a differential signal input end and a streaming data stream output end, and the differential signal input end is connected with the audio and video input interface;
the audio and video streaming data receiver is provided with a streaming data stream input end and an audio and video separation data stream output end, the streaming data stream input end is connected with the streaming data stream output end of the input side physical layer transceiving controller, and the audio and video separation data stream output end is connected with the audio and video streaming data stream transmitter.
3. Audio-visual transmission device according to claim 2,
the audio and video streaming data transmitter is provided with an audio and video separation data stream input end and a streaming data stream output end, and the audio and video separation data stream input end is connected with the audio and video separation data stream output end of the audio and video streaming data stream receiver;
the output side physical layer transceiving controller is provided with a streaming data stream input end and a differential signal output end, the streaming data stream input end is connected with the streaming data stream output end of the audio and video streaming data stream transmitter, and the differential signal output end is connected with the audio and video output interface.
4. The audio-visual transmission device according to claim 1, further comprising a first serializer and a second serializer;
the audio and video streaming data receiver is connected with the audio and video streaming data transmitter sequentially through the first serializer and the second serializer and deserializer.
5. Audio-visual transmission device according to claim 4,
the first serializer is provided with an audio and video separation data stream input end and an audio and video separation data packet serial output end, the audio and video separation data stream input end is connected with the audio and video streaming data stream receiver, and the audio and video separation data packet serial output end is connected with the second serializer.
6. Audio-visual transmission device according to claim 5,
the second deserializer is provided with an audio and video separation data packet serial input end and an audio and video separation data stream output end, the audio and video separation data packet serial input end is connected with the audio and video separation data packet serial output end of the first deserializer, and the audio and video separation data stream output end is connected with the audio and video stream data stream transmitter.
7. An audio and video transmission device is characterized by comprising an audio and video input interface, a programmable logic device and an audio and video output interface;
the programmable logic device is provided with an input side physical layer transceiving controller, an audio and video streaming data stream receiver, an audio and video streaming data stream transmitter and an output side physical layer transceiving controller; the input side physical layer transceiving controller is connected with the output side physical layer transceiving controller through the audio and video streaming data receiver and the audio and video streaming data transmitter in sequence;
the programmable logic device is also provided with a differential signal input end and a differential signal output end, the differential signal input end is connected with the audio and video input interface, and the differential signal output end is connected with the audio and video output interface.
8. An audio and video transmission device is characterized by comprising an audio and video input interface, a first programmable logic device, a second programmable logic device and an audio and video output interface;
the first programmable logic device is provided with a differential signal input end and an audio and video separation data packet serial output end, the differential signal input end is connected with an audio and video input interface, and the audio and video separation data packet serial output end is connected with the second programmable logic editor;
the second programmable logic device is provided with an audio and video separation data packet serial input end and a differential signal output end, the audio and video separation data packet serial input end is connected with the first programmable logic device, and the differential signal output end is connected with the audio and video output interface.
9. A video processing apparatus comprises a processor, a data input interface and a data output interface; the audio and video transmission device is characterized in that the video processing device is provided with the audio and video transmission device according to any one of claims 1 to 8, and the processor is connected with the audio and video transmission device;
one of the data input interfaces of the video processing device is the audio and video input interface;
one of the data output interfaces of the video processing device is the audio and video output interface.
10. A multimedia playing device comprises a display screen, a processor and a data input interface; the multimedia playing device is characterized by comprising an audio and video transmission device according to any one of claims 1 to 8, wherein the processor is connected with the audio and video transmission device;
one of the data input interfaces of the multimedia playing device is the audio and video input interface;
and the data input end of the display screen is connected with the audio and video output interface.
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| CN201921023395.1U CN210225630U (en) | 2019-07-02 | 2019-07-02 | Audio and video transmission device, video processing device and multimedia playing device |
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| CN201921023395.1U CN210225630U (en) | 2019-07-02 | 2019-07-02 | Audio and video transmission device, video processing device and multimedia playing device |
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