CN206977577U - Video-audio signal Transmission system based on power line - Google Patents

Abstract

The utility model discloses an audio-visual signal transmission system based on a power line, which belongs to the technical field of electronic communication, and comprises an audio-visual signal sending end and an audio-visual signal receiving end. Both the signal sending end and the audio-visual signal receiving end include a housing, and the inside of the housing is respectively provided with a first processor and a second processor. The outside of the body is provided with an HDMI interface on the receiving end, the HDMI interface on the transmitting end is connected to the first processor, the HDMI interface on the receiving end is connected to the second processor, the first processor is also connected to the first power carrier module, and the second processor is also connected to the The second power carrier module, the two ends of the power line are respectively connected to the first power carrier module and the second power carrier module, audio and video signals can be transmitted on the existing power line, reducing repeated wiring, and solving the problems in the prior art.

Description

Audio and video signal transmission system based on power line

technical field

The utility model relates to an audio-visual signal transmission system based on electric power lines, which belongs to the technical field of electronic communication.

Background technique

Wireless audio and video transmission is a wireless transmission device that transmits audio and video signals from signal sources (computers and high-definition playback devices) to remote HDTVs or high-definition projectors. It can realize lossless and delay-free transmission of 1080P/60 and 3D. In the middle, it is connected by cat5/5e/6 network cable, the transmission distance is short, the effective transmission distance is about 2-12 meters, and the network cable needs to be arranged, and the cost of transmission medium is high.

Utility model content

The purpose of this utility model is to provide an audio-visual signal transmission system based on power lines, which can

Video and video signals can be transmitted, repeated wiring can be reduced, and problems in the prior art can be solved.

The power line-based audio-visual signal transmission system described in the utility model includes an audio-visual signal sending end and an audio-visual signal receiving end, and the audio-visual signal sending end and the audio-visual signal receiving end are connected through a power line to realize data communication, and the audio-visual signal sending end and audio-visual signal receiving end The receiving end includes a shell, and the inside of the shell is respectively provided with a first processor and a second processor. The outside of the shell of the audio-visual signal sending end is provided with an HDMI interface of the sending end, and the outside of the shell of the audio-visual signal receiving end is provided with a receiver. The HDMI interface of the transmitting end is connected to the first processor, the HDMI interface of the receiving end is connected to the second processor, the first processor is also connected to the first power carrier module, and the second processor is also connected to the second power carrier module. Both ends of the power line are respectively connected to the first power carrier module and the second power carrier module.

When the audio-visual signal is transmitted, the audio-visual signal is input through the HDMI interface of the sending end, and after being processed by the first processor, the HDMI digital signal is parsed and compressed into a specified protocol package, and then transmitted to the first power carrier module through protocols such as TCP\UDP. The power line is connected between the first power carrier module and the second power carrier module, and the data is first transmitted to the second power carrier module through electric power. The receiver transmits to the HDMI interface of the receiving end to play the audio and video signal.

The outer shell of the audio-visual signal sending end is also provided with a sending end infrared interface, and the outer shell of the audio-visual signal receiving end is also provided with a receiving end infrared interface, the sending end infrared interface is connected to the first processor, and the receiving end infrared interface is connected to second processor.

Infrared signal transmission can be realized through the infrared interface of the sending end and the infrared interface of the receiving end, which solves the problem of electrical appliances controlled by traditional remote controls, such as TVs and projectors.

The outside of the audio-visual signal transmitting end casing is also provided with a transmitting-end AUDIO interface, and the exterior of the audio-visual signal receiving end casing is also provided with a receiving-end AUDIO interface, the transmitting-end AUDIO interface is connected to the first processor, and the receiving-end AUDIO interface is connected to The second processor, by setting the AUDIO interface of the sending end, can realize microphone pickup and transmit the audio to the AUDIO interface of the receiving end through the power line.

The outside of the housing of the audio-visual signal transmitting end is also provided with a transmitting-end RS232 interface, and the exterior of the housing of the audio-visual signal receiving end is also provided with a receiving-end RS232 interface, the transmitting-end RS232 interface is connected to the first processor, and the receiving-end RS232 interface is connected to second processor.

By setting the RS232 interface at the sending end and the RS232 interface at the receiving end, the signal for controlling the projector can be transmitted to realize remote control of the projector.

Both the first power carrier module and the second power carrier module include an AR7420 chip and an AR1540 chip, the AR7420 chip is connected to the AR1540 chip, and the power line is connected to the AR1540 chip.

At the sending end of video and audio signals, the first processor packs and compresses all the signals of the sending end RS232 interface, the sending end AUDIO interface, the sending end HDMI interface, and the sending end infrared interface, and transmits the data to the first power carrier module through protocols such as TCP\UDP The AR7420 chip on the AR7420 chip sends the data to the power line through the AR1540 chip after processing by the AR7420 chip; at the audio and video signal receiving end, the data is transmitted on the power line, and the AR1540 chip of the second power carrier module converts the modulated signal on the power line into digital The signal is sent to the AR7420 chip and encapsulated into a TCP\UDP protocol format. The second processor receives the TCP\UDP protocol, analyzes the data, and sends the parsed data to the HDMI interface of the receiving end, the infrared interface of the receiving end, and the AUDIO of the receiving end. interface.

Both the first processor and the second processor use the HI3520 chip.

The internal interface chip of the AUDIO interface of the sending end and the AUDIO interface of the receiving end adopts a CS5343 chip, and the analog audio signal is converted into a digital signal through the AUDIO interface of the sending end and the AUDIO interface of the receiving end through the CS5343 chip and compressed and packaged.

The internal interface chip of the RS232 interface of the transmitting end and the RS232 interface of the receiving end adopts the SP3222EEY chip, and the RS232 interface of the transmitting end and the RS232 interface of the receiving end convert the RS232 signal into a TTL signal through the SP3222EEY chip.

Compared with the prior art, the utility model has the following beneficial effects:

Provide an audio and video signal transmission system based on power lines, which can transmit audio and video signals on existing power lines, reduce repeated wiring, and transmit high-definition audio and video signals through strong electric lines, with a transmission distance of 200 meters; it has a separate audio input and output interface, It can switch the audio signal source; it has an infrared interface, which can receive and transmit the infrared control signal of the remote controller; it has an RS232 serial port, which can transmit and control the signal of the projector to realize remote control, solve the problems in the prior art, and can be widely popularized and applied.

Description of drawings

Fig. 1 is the circuit connection block diagram of the utility model embodiment;

Fig. 2 is an external structural diagram of a part of the audio-visual signal transmitting end or the audio-visual signal receiving end in the embodiment of the present invention;

Fig. 3 is an external structural diagram of another part of the audio-visual signal transmitting end or the audio-visual signal receiving end in the embodiment of the present invention;

In the figure: 1. HDMI interface at the sending end; 2. Infrared interface at the sending end; 3. AUDIO interface at the sending end; 4. The first processor; 5. The first power carrier module; 6. Audio and video signal sending end; 7. Power line; 8. RS232 interface at the sending end; 9. Second power carrier module; 10. Audio-visual signal receiving end; 11. HDMI interface at the receiving end; 12. Infrared interface at the receiving end; 13. AUDIO interface at the receiving end; 14. Second processor; 15. Receiver RS232 interface.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

Example 1:

As shown in Figure 1, the audio-visual signal transmission system based on the power line described in the utility model includes an audio-visual signal sending end 6 and an audio-visual signal receiving end 10, and the audio-visual signal sending end 6 and the audio-visual signal receiving end 10 are connected by a power line 7 To realize data communication, the audio-visual signal sending end 6 and the audio-visual signal receiving end 10 both include a casing, the inside of the casing is respectively provided with a first processor 4 and the second processor 14, and the exterior of the audio-visual signal sending end 6 casing is provided with The HDMI interface 1 of the transmitting end, the exterior of the audio-visual signal receiving end 10 housing is provided with an HDMI interface 11 of the receiving end, the HDMI interface 1 of the transmitting end is connected to the first processor 4, the HDMI interface 11 of the receiving end is connected to the second processor 14, and the first processing The processor 4 is also connected to the first power carrier module 5, the second processor 14 is also connected to the second power carrier module 9, and the two ends of the power line 7 are respectively connected to the first power carrier module 5 and the second power carrier module 9.

To further illustrate the above embodiment, the first power carrier module 5 and the second power carrier module 9 both include an AR7420 chip and an AR1540 chip, the AR7420 chip is connected to the AR1540 chip, and the power line 7 is connected to the AR1540 chip.

In order to further illustrate the above embodiment, both the first processor 4 and the second processor 14 use the HI3520 chip.

The working principle of this embodiment 1 is: when the audio-visual signal is transmitted, the audio-visual signal is input through the HDMI interface 1 of the sending end, and after being processed by the first processor 4, the HDMI digital signal is parsed and compressed into a prescribed protocol package, and then transmitted through TCP\UDP and other protocols are transmitted to the first power carrier module 5, the power line 7 is connected between the first power carrier module 5 and the second power carrier module 9, and the data is transmitted to the second power carrier module 9 through the power line 7, and the second power carrier module 9 After receiving the audio-visual signal, transmit it to the second processor 14, and the second processor 14 transmits it to the HDMI interface 11 at the receiving end to play the audio-visual signal.

Example 2:

The power line-based audio-visual signal transmission system described in the utility model includes an audio-visual signal sending end 6 and an audio-visual signal receiving end 10, and the audio-visual signal sending end 6 and the audio-visual signal receiving end 10 are connected through a power line 7 to realize data communication, and the audio-visual signal Both the sending end 6 and the audio-visual signal receiving end 10 include a casing, the inside of the casing is respectively provided with a first processor 4 and a second processor 14, and the outside of the casing of the audio-visual signal sending end 6 is provided with a sending-end HDMI interface 1, The outside of the audio-visual signal receiving terminal 10 housing is provided with a receiving terminal HDMI interface 11, the transmitting terminal HDMI interface 1 is connected to the first processor 4, the receiving terminal HDMI interface 11 is connected to the second processor 14, and the first processor 4 is also connected to the second processor 14. A power carrier module 5, the second processor 14 is also connected to a second power carrier module 9, and the two ends of the power line 7 are respectively connected to the first power carrier module 5 and the second power carrier module 9.

In order to further illustrate the above-mentioned embodiment, the exterior of audio-visual signal transmitting end 6 casing is also provided with transmitting end infrared interface 2, the exterior of audio-visual signal receiving end 10 housing is also provided with receiving end infrared interface 12, and transmitting end infrared interface 2 is connected to the first A processor 4, the receiving end infrared interface 12 is connected to the second processor 14.

To further illustrate the above embodiment, the first power carrier module 5 and the second power carrier module 9 both include an AR7420 chip and an AR1540 chip, the AR7420 chip is connected to the AR1540 chip, and the power line 7 is connected to the AR1540 chip.

In order to further illustrate the above embodiment, both the first processor 4 and the second processor 14 use the HI3520 chip.

The working principle of this embodiment 2 is: when the infrared remote control signal is transmitted, the infrared remote control signal is input through the infrared interface 2 of the sending end, and after being processed by the first processor 4, the infrared signal is analyzed and compressed into a prescribed protocol package, and then transmitted through the TCP\ Protocols such as UDP are transmitted to the first power carrier module 5, and the power line 7 is connected between the first power carrier module 5 and the second power carrier module 9, and the data is transmitted to the second power carrier module 9 through the power line 7, and the second power carrier module After the module 9 receives the audio-visual signal, it transmits it to the second processor 14, and the second processor 14 transmits it to the infrared interface 12 of the receiving end to output the infrared remote control signal.

Example 3:

The power line-based audio-visual signal transmission system described in the utility model includes an audio-visual signal sending end 6 and an audio-visual signal receiving end 10, and the audio-visual signal sending end 6 and the audio-visual signal receiving end 10 are connected through a power line 7 to realize data communication, and the audio-visual signal Both the sending end 6 and the audio-visual signal receiving end 10 include a casing, the inside of the casing is respectively provided with a first processor 4 and a second processor 14, and the outside of the casing of the audio-visual signal sending end 6 is provided with a sending-end HDMI interface 1, The outside of the audio-visual signal receiving terminal 10 housing is provided with a receiving terminal HDMI interface 11, the transmitting terminal HDMI interface 1 is connected to the first processor 4, the receiving terminal HDMI interface 11 is connected to the second processor 14, and the first processor 4 is also connected to the second processor 14. A power carrier module 5, the second processor 14 is also connected to a second power carrier module 9, and the two ends of the power line 7 are respectively connected to the first power carrier module 5 and the second power carrier module 9.

In order to further illustrate the above-mentioned embodiment, the outside of the audio-visual signal sending end 6 casing is also provided with a sending-end AUDIO interface 3, and the outside of the audio-visual signal receiving end 10 casing is also provided with a receiving-end AUDIO interface 13, and the sending-end AUDIO interface 3 is connected to the first A processor 4 , the receiving end AUDIO interface 13 is connected to the second processor 14 .

To further illustrate the above embodiment, the first power carrier module 5 and the second power carrier module 9 both include an AR7420 chip and an AR1540 chip, the AR7420 chip is connected to the AR1540 chip, and the power line 7 is connected to the AR1540 chip.

In order to further illustrate the above embodiment, both the first processor 4 and the second processor 14 use the HI3520 chip.

In order to further illustrate the above embodiment, the interface chip inside the AUDIO interface 3 at the sending end and the AUDIO interface 13 at the receiving end adopts the CS5343 chip.

The working principle of this embodiment 3 is: when the microphone audio signal is transmitted, the microphone audio signal is input through the AUDIO interface 3 of the sending end, and after being processed by the first processor 4, the microphone audio signal is parsed and compressed into a prescribed protocol packet, and transmitted through TCP The protocol such as \UDP is transmitted to the first power carrier module 5, and the power line 7 is connected between the first power carrier module 5 and the second power carrier module 9, and the data is transmitted to the second power carrier module 9 through the power line 7, and the second power The carrier module 9 transmits the video and audio signal to the second processor 14 after receiving it, and the second processor 14 transmits it to the AUDIO interface 13 of the receiving end to output the audio signal of the microphone.

Example 4:

The power line-based audio-visual signal transmission system described in the utility model includes an audio-visual signal sending end 6 and an audio-visual signal receiving end 10, and the audio-visual signal sending end 6 and the audio-visual signal receiving end 10 are connected by a power line 7 to realize data communication, and the audio-visual signal Both the sending end 6 and the audio-visual signal receiving end 10 include a casing, and the inside of the casing is respectively provided with a first processor 4 and a second processor 14, and the outside of the casing of the audio-visual signal sending end 6 is provided with a sending-end HDMI interface 1, The outside of the audio-visual signal receiving end 10 housing is provided with a receiving end HDMI interface 11, the transmitting end HDMI interface 1 is connected to the first processor 4, the receiving end HDMI interface 11 is connected to the second processor 14, and the first processor 4 is also connected to the second processor 14. A power carrier module 5, the second processor 14 is also connected to a second power carrier module 9, and the two ends of the power line 7 are respectively connected to the first power carrier module 5 and the second power carrier module 9.

In order to further illustrate the above-mentioned embodiment, the outside of the audio-visual signal transmitting terminal 6 housing is also provided with a transmitting terminal RS232 interface 8, and the external of the audio-visual signal receiving terminal 10 housing is also provided with a receiving terminal RS232 interface 15, and the transmitting terminal RS232 interface 8 is connected to the first A processor 4 , the receiving end RS232 interface 15 is connected to the second processor 14 .

To further illustrate the above embodiment, the first power carrier module 5 and the second power carrier module 9 both include an AR7420 chip and an AR1540 chip, the AR7420 chip is connected to the AR1540 chip, and the power line 7 is connected to the AR1540 chip.

In order to further illustrate the above embodiment, both the first processor 4 and the second processor 14 use the HI3520 chip.

In order to further illustrate the above embodiment, the interface chip inside the RS232 interface 8 at the sending end and the RS232 interface 15 at the receiving end adopts the SP3222EEY chip.

The working principle of this embodiment 4 is: when the projector signal is transmitted, the projector signal is input through the RS232 interface 8 of the sending end, and after being processed by the first processor 4, the projector signal is parsed and compressed into a specified protocol package, and then transmitted through TCP The protocol such as \UDP is transmitted to the first power carrier module 5, the power line 7 is connected between the first power carrier module 5 and the second power carrier module 9, and the data is transmitted to the second power carrier module 9 through the power line 7, and the second power The carrier module 9 transmits the audio-visual signal to the second processor 14 after receiving it, and the second processor 14 transmits it to the receiving end RS232 interface 15 to output the projector signal.

Using the power line-based audio-visual signal transmission system of the embodiment of the utility model described above in conjunction with the accompanying drawings, the audio-visual signal can be transmitted on the existing power line, reducing repeated wiring, and solving the problems in the prior art. But the utility model is not limited to the described embodiments, and the changes, modifications, replacements and deformations to the embodiments still fall within the protection scope of the utility model without departing from the principle and spirit of the utility model.

Claims (8)

1. A video and audio signal transmission system based on power lines, characterized in that: comprise audio and video signal sending end (6) and audio and video signal receiving end (10), between audio and video signal sending end (6) and audio and video signal receiving end (10) The data communication is realized through the connection of the power line (7), and the audio-visual signal sending end (6) and the audio-visual signal receiving end (10) both include a casing, and the inside of the casing is respectively provided with a first processor (4) and a second Processor (14), audio-visual signal transmitting end (6) shell outside is provided with transmitting end HDMI interface (1), the exterior of audio-visual signal receiving end (10) housing is provided with receiving end HDMI interface (11), transmitting end The HDMI interface (1) is connected to the first processor (4), the receiving end HDMI interface (11) is connected to the second processor (14), and the first processor (4) is also connected to the first power carrier module (5). The second processor (14) is also connected with a second power carrier module (9), and the two ends of the power line (7) are respectively connected with the first power carrier module (5) and the second power carrier module (9). 2. The audio-visual signal transmission system based on power lines according to claim 1, characterized in that: the outside of the housing of the audio-visual signal transmitting end (6) is also provided with an infrared interface (2) at the transmitting end, and the audio-visual signal receiving end (10) There is also an infrared interface (12) on the outside of the casing, the infrared interface (2) on the sending end is connected to the first processor (4), and the infrared interface (12) on the receiving end is connected to the second processor (14). 3. The audio-visual signal transmission system based on power lines according to claim 1, characterized in that: the outside of the housing of the audio-visual signal transmitting end (6) is also provided with an AUDIO interface (3) at the transmitting end, and the audio-visual signal receiving end (10) A receiving end AUDIO interface (13) is also provided outside the casing, the sending end AUDIO interface (3) is connected to the first processor (4), and the receiving end AUDIO interface (13) is connected to the second processor (14). 4. The audio-visual signal transmission system based on power lines according to claim 1, characterized in that: the exterior of the casing of the audio-visual signal transmitting end (6) is also provided with an RS232 interface (8) at the transmitting end, and the audio-visual signal receiving end (10) The exterior of the housing is also provided with a receiving end RS232 interface (15), the transmitting end RS232 interface (8) is connected to the first processor (4), and the receiving end RE232 interface (15) is connected to the second processor (14). 5. The audio-visual signal transmission system based on power lines according to claim 1, characterized in that: said first power carrier module (5) and second power carrier module (9) both include AR7420 chip and AR1540 chip, AR7420 The chip is connected to the AR1540 chip, wherein the power line (7) is connected to the AR1540 chip. 6. The video and audio signal transmission system based on power lines according to claim 1, characterized in that: the first processor (4) and the second processor (14) both use HI3520 chips. 7. The audio-visual signal transmission system based on power lines according to claim 3, characterized in that: the internal interface chip of the AUDIO interface (3) at the sending end and the AUDIO interface (13) at the receiving end adopts a CS5343 chip. 8. The audio-visual signal transmission system based on power lines according to claim 4, characterized in that: the internal interface chip of the RS232 interface (8) at the transmitting end and the RS232 interface (15) at the receiving end adopts the SP3222EEY chip.