Noise isolation switch

Abstract

The invention relates to a noise isolation switch, which comprises a signal input module, a first switch chip, an isolation module, a second switch chip and a signal output module, and is characterized in that the isolation module is connected between the first switch chip and the second switch chip; noise-carrying signals input by a signal input module and / or an external power supply are subjected to noise reduction or de-noising processing to obtain output signals, signals of an isolation input end and signals of an output end are directly connected, the purpose of signal noise isolation is achieved, noise interference introduced by a signal input port or a power line is prevented from being directly brought into an output port, and the noise interference cannot be caused. And the analysis distortion phenomenon of the audio or video decoding equipment is caused.

Description

Technical Field

[0001] The present application relates to the technical field of switches, and in particular to a noise isolation switch. Background Art

[0002] A network switch is a network device that can connect multiple network devices together through multiple connection ports to form a complete local area network (LAN). When in use, a network switch with multiple connection ports needs to be connected to the devices to be used through multiple interfaces on the surface. After the connection is completed, the switch will process the received data and forward it after processing, thereby effectively realizing multi-device communication within the local area network and being able to provide a variety of optimization and management services according to actual needs.

[0003] However, current network switches are mainly composed of three parts: switching power supply, switching chip and network interface. For dual-chip switches, since all switch ports are powered by the same set of power supplies, the input signal is also input by the same signal input terminal, and the output signal is directly output by the switch chip connected to the signal output terminal. In the process of transmitting highly sensitive digital network signals (audio and video signals, etc.), once any signal input terminal or power line introduces high-frequency or low-frequency noise interference, it will be directly brought from the input terminal to the output terminal, resulting in distortion of the audio or video decoding equipment. Summary of the invention

[0004] The present application provides a noise isolation switch to solve the problem in the prior art that once any signal input terminal or power line introduces high-frequency or low-frequency noise interference, it will be directly brought from the input terminal to the output terminal, causing distortion in the analysis of audio or video decoding equipment.

[0005] In a first aspect, the present application provides a noise isolation switch, the noise isolation switch comprising the noise isolation switch comprising a signal input module, a first switch chip, an isolation module, a second switch chip and a signal output module;

[0006] The input end of the first switch chip is connected to the signal input module;

[0007] The isolation module is connected to the first switch chip and the second switch chip;

[0008] The output end of the second switch chip is connected to the signal output module;

[0009] The isolation module, in response to the first signal, performs noise reduction or denoising processing on the first signal to obtain a second signal;

[0010] The first signal is a signal carrying noise input by the signal input module and / or the external power supply;

[0011] The second signal is a signal output after being subjected to noise reduction or denoising processing by the isolation module.

[0012] Optionally, the isolation module is a signal isolation module, the first signal is a first electrical signal, and the second signal is a second electrical signal;

[0013] The input end of the signal isolation module is connected to the output end of the first switch chip;

[0014] The output end of the signal isolation module is connected to the input end of the second switch chip;

[0015] The signal isolation module converts the first electrical signal into the second electrical signal in response to the first electrical signal transmitted by the first switch chip, and sends the second electrical signal to the second switch chip to isolate the direct transmission of signals between the first switch chip and the second switch chip;

[0016] The first electrical signal is an electrical signal carrying noise input by the signal input module to the first switch chip;

[0017] The second electrical signal is an electrical signal output by the signal output module after being subjected to noise reduction or denoising processing by the noise isolation switch.

[0018] Optionally, the isolation module is a power isolation module, the first signal is a first power signal, and the second signal is a second power signal;

[0019] The input end of the power isolation module is connected to an external power supply;

[0020] The output end of the power isolation module is connected to the input ends of the first switch chip and the second switch chip;

[0021] When the external power supply is subject to high-frequency interference, the first power signal is input to the power isolation module, the power isolation module shields the high-frequency interference, performs noise reduction filtering on the first power signal, obtains the second power signal, and outputs the second power signal to the first switch chip and the second switch chip, so that the external power supply supplies power to the first switch chip and the second switch chip normally;

[0022] The first power signal is a power signal carrying noise input by the external power supply;

[0023] The second power signal is a power signal that has been subjected to noise reduction or denoising processing by the isolation module.

[0024] Optionally, the isolation module is a signal isolation module and a power isolation module, the first signal includes a first electrical signal and a first power signal, and the second signal includes a second electrical signal and a second power signal;

[0025] The input end of the signal isolation module is connected to the output end of the first switch chip;

[0026] The output end of the signal isolation module is connected to the input end of the second switch chip;

[0027] The input end of the power isolation module is connected to an external power supply;

[0028] The power isolation module is connected to the first switch chip and the second switch chip;

[0029] The signal isolation module converts the first electrical signal into the second electrical signal in response to the first electrical signal transmitted by the first switch chip, and sends the second electrical signal to the second switch chip to isolate the direct transmission of signals between the first switch chip and the second switch chip;

[0030] The power isolation module responds to the first power signal transmitted by the external power supply, performs noise reduction filtering on the first power signal, obtains the second power signal, and outputs the second power signal to the first switch chip and the second switch chip, so that the external power supply can normally supply power to the first switch chip and the second switch chip.

[0031] Optionally, the isolation module includes a first isolation module and a second isolation module;

[0032] The first end of the first isolation module is connected to the first switch chip;

[0033] The second end of the first isolation module is connected to the first end of the second isolation module;

[0034] The second end of the second isolation module is connected to the second switch chip;

[0035] The third end of the first isolation module is connected to the external power supply;

[0036] The third end of the second isolation module is connected to the external power supply;

[0037] The first isolation module and the second isolation module respond to the first signal and perform noise reduction or denoising processing on the first signal to obtain the second signal.

[0038] Optionally, the first signal is a first electrical signal, the second signal is a second electrical signal, the first isolation module is a first signal isolation module, the second isolation module is a second signal isolation module, and the first signal isolation module is connected to the second signal isolation module via an optical fiber;

[0039] The input end of the first signal isolation module is connected to the output end of the first switch chip, and the output end of the first signal isolation module is connected to the input end of the second signal isolation module;

[0040] The output end of the second signal isolation module is connected to the input end of the second switch chip;

[0041] The first signal isolation module converts the first electrical signal into the optical signal in response to the first electrical signal, and sends the optical signal to the second signal isolation module;

[0042] The second signal isolation module converts the optical signal into the second electrical signal in response to the optical signal, and sends the second electrical signal to the second switch chip to isolate direct signal transmission between the first switch chip and the second switch chip.

[0043] Optionally, the first signal is a first power signal, the second signal is a second power signal, the isolation module includes a first isolation module and a second isolation module, the first isolation module is a first power isolation module, the second isolation module is a second power isolation module, the first power isolation module is connected to an external power supply through one end of a power line, and the second power isolation module is connected to the external power supply through the other end of a power line;

[0044] The input end of the first power isolation module is connected to the external power supply, and the output end of the first power isolation module is connected to the input end of the first switch chip. When the external power supply is subject to high-frequency interference, the first power isolation module shields the high-frequency interference so that the external power supply can normally supply power to the first switch chip;

[0045] The input end of the second power isolation module is connected to the external power supply, and the output end of the second power isolation module is connected to the input end of the second switch chip. When the external power supply is subject to high-frequency interference, the second power isolation module shields the high-frequency interference so that the external power supply can normally supply power to the second switch chip.

[0046] Optionally, the noise isolation switch further comprises a rate control module, wherein the rate control module comprises a switch, a single chip microcomputer and an optical isolation device;

[0047] The first end of the rate control module is connected to the output end of the signal input module;

[0048] The second end of the rate control module is connected to the input end of the first switch chip;

[0049] The third terminal of the rate control module is connected to the output terminal of the second switch chip;

[0050] The fourth terminal of the rate control module is connected to the input terminal of the signal output module.

[0051] Optionally, the real-time rate at which the electrical signal is input to the signal input module is controlled by controlling the switch to avoid distortion of the electrical signal output from the signal output module due to a signal transmission speed greater than a preset threshold.

[0052] Optionally, the signal isolation module is a single-fiber transceiver integrated optical module or a signal isolation circuit composed of optical isolation devices.

[0053] The above-mentioned technical solution provided by the embodiment of the present application connects an isolation module between the first switch chip and the second switch chip, performs noise reduction or denoising processing on the noise-carrying signal input by the signal input module and / or the external power supply to obtain an output signal, and directly connects the signals of the isolation input end and the output end to achieve the purpose of signal noise isolation, thereby avoiding the noise interference introduced by the signal input port or the power line being directly brought into the output port, resulting in the phenomenon of distortion of the analysis of the audio or video decoding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0055] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0056] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0057] Figure 1 A schematic diagram of a module of a noise isolation switch provided in this application;

[0058] Figure 2 A schematic diagram of a first embodiment of the isolation module provided in the present application;

[0059] Figure 3 A schematic diagram of a second embodiment of the isolation module provided in the present application;

[0060] Figure 4 A schematic diagram of a third embodiment of the isolation module provided in the present application;

[0061] Figure 5 A schematic diagram of a first isolation module and a second isolation module provided in the present application;

[0062] Figure 6 A schematic diagram of a first embodiment of a first isolation module and a second isolation module provided in the present application;

[0063] Figure 7 A schematic diagram of a second embodiment of the first isolation module and the second isolation module provided in the present application;

[0064] Figure 8 A schematic diagram of a third embodiment of the first isolation module and the second isolation module provided in the present application;

[0065] Fig. 9 A schematic diagram of a rate control module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0067] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0068] In order to solve the problems in the prior art, the present application provides a noise isolation switch, which includes a signal input module, a first switch chip, an isolation module, a second switch chip and a signal output module. By connecting the isolation module between the first switch chip and the second switch chip, the noise-carrying signal input by the signal input module and / or the external power supply is subjected to noise reduction or denoising to obtain an output signal, and the signals at the isolation input end and the output end are directly connected to achieve the purpose of signal noise isolation, thereby avoiding the noise interference introduced by the signal input port or the power line being directly brought into the output port, causing the audio or video decoding device to distort the analysis.

[0069] Figure 1 A schematic diagram of a module of a noise isolation switch provided in the present application, wherein the noise isolation switch comprises a signal input module, a first switch chip, an isolation module, a second switch chip and a signal output module;

[0070] The input end of the first switch chip is connected to the signal input module;

[0071] The isolation module is connected to the first switch chip and the second switch chip;

[0072] The output end of the second switch chip is connected to the signal output module;

[0073] The isolation module, in response to the first signal, performs noise reduction or denoising processing on the first signal to obtain a second signal;

[0074] The first signal is a signal carrying noise input by the signal input module and / or the external power supply;

[0075] The second signal is a signal output after being subjected to noise reduction or denoising processing by the isolation module.

[0076] In existing dual-chip switches, since all switch ports are powered by the same set of power supplies, the input signal is also input by the same signal input terminal, and the output signal is directly output by the switch chip connected to the signal output terminal. In the process of transmitting highly sensitive digital network signals, once any signal input terminal or power line introduces high-frequency or low-frequency noise interference, it will be directly brought from the input terminal to the output terminal, causing distortion in the analysis of audio or video decoding equipment.

[0077] In view of this, an embodiment of the present application provides a noise isolation switch, which includes two chips, a first switch chip and a second switch chip, and also includes a signal input module for inputting signals to the first switch chip and the second switch chip, and also includes a signal output module for outputting the signal output by the second switch chip.

[0078] In actual application scenarios, it is suitable for use inside a multi-chip switch, or between single-chip switches. In the embodiment of the present application, the switch chip can be a single-port, multi-port 100M, 1G, 10G and other speed network switch chip or FPGA, single-chip microcomputer and other forms. The solution uses the single-port 1G network switch chip RTL8213B, which is mainly used to identify IP network signals and forward data on a specified path.

[0079] In existing switches, since the dual chips are powered by the same power supply and the signals are input by the same signal input terminal, there may be noise interference in the signal input module and the external power supply. Noise interference includes high-frequency noise interference and low-frequency noise interference. High-frequency noise refers to the high-frequency noise signal generated by the interference of electronic components in audio equipment, usually between several thousand Hertz (Hz) and several hundred kilohertz. Low-frequency noise refers to the noise generated by vibration and machine operation in mechanical equipment, usually with a frequency below 200 Hz. Both types of noise affect the performance and reliability of electronic equipment and communication systems.

[0080] Therefore, the noise isolation switch of the embodiment of the present application also provides an isolation module connected between the first switch chip and the second switch chip, which is used to filter the noise-carrying signals input by the signal input module and / or the external power supply, which is beneficial to avoid the introduction of high-frequency or low-frequency noise interference by the signal input end and / or the external power supply from the input end directly to the signal output end, resulting in distortion of the analysis of the audio or video decoding device.

[0081] Figure 2 A schematic diagram of a first embodiment of the isolation module provided in the present application, optionally, the isolation module is a signal isolation module, the first signal is a first electrical signal, and the second signal is a second electrical signal;

[0082] The input end of the signal isolation module is connected to the output end of the first switch chip;

[0083] The output end of the signal isolation module is connected to the input end of the second switch chip;

[0084] The signal isolation module converts the first electrical signal into the second electrical signal in response to the first electrical signal transmitted by the first switch chip, and sends the second electrical signal to the second switch chip to isolate the direct transmission of signals between the first switch chip and the second switch chip;

[0085] The first electrical signal is an electrical signal carrying noise input by the signal input module to the first switch chip;

[0086] The second electrical signal is an electrical signal output by the signal output module after being subjected to noise reduction or denoising processing by the noise isolation switch.

[0087] In the embodiment of the present application, the signal input module can be a single or multiple physical interfaces or wireless interfaces, etc. The interface type can be RJ45, M12, M16, antenna, etc. This solution uses the RJ45 interface module, which is mainly used to connect the input signal source and match the signal source interface type.

[0088] However, due to the introduction of high-frequency or low-frequency noise interference at the signal input end, signal distortion, data errors, reduced system sensitivity, and increased bit error rate may occur. Therefore, the present application provides a possible implementation method. When the isolation module is a signal isolation module, the signal input module inputs a first electrical signal to the first switch chip, wherein the first electrical signal is an electrical signal carrying noise input by the signal input module to the first switch chip. The first switch chip responds to the first electrical signal and sends the first electrical signal to the signal isolation module. The signal isolation module performs noise reduction or denoising on the first electrical signal, and converts the first electrical signal into a relatively pure second electrical signal, wherein the second electrical signal is an electrical signal after noise reduction or denoising. The signal isolation module sends the processed second electrical signal to the second switch chip, which is output to the signal output module by the second switch chip. The signal isolation module is used to realize the isolation of electrical signals between chips, so as to avoid the direct transmission of electrical signals between chips, and the noise interference introduced into the signal input end will be directly brought from the signal input end to the signal output end, causing the phenomenon of distortion of the analysis of audio or video decoding equipment.

[0089] Figure 3 A schematic diagram of a second embodiment of the isolation module provided in the present application, wherein, optionally, the isolation module is a power isolation module, the first signal is a first power signal, and the second signal is a second power signal;

[0090] The input end of the power isolation module is connected to an external power supply;

[0091] The output end of the power isolation module is connected to the input ends of the first switch chip and the second switch chip;

[0092] When the external power supply is subject to high-frequency interference, the first power signal is input to the power isolation module, the power isolation module shields the high-frequency interference, performs noise reduction filtering on the first power signal, obtains the second power signal, and outputs the second power signal to the first switch chip and the second switch chip, so that the external power supply supplies power to the first switch chip and the second switch chip normally;

[0093] The first power signal is a power signal carrying noise input by the external power supply;

[0094] The second power signal is a power signal that has been subjected to noise reduction or denoising processing by the isolation module.

[0095] High-frequency interference refers to power supply interference signals with a frequency exceeding 10kHz, which have the characteristics of high energy, short duration, and high penetration. This interference mainly comes from the transient current and high-frequency noise generated by high-speed switching during the operation of the switching power supply. High-frequency interference mainly affects the high-frequency circuit part of the equipment, causing problems such as voltage reduction, energy loss, unstable operation, and even burning out the electronic components of the equipment.

[0096] Therefore, the present application provides a possible implementation method, when the isolation module is a power isolation module, the external power supply inputs a first power signal to the first switch chip, wherein the first power signal is a power signal carrying noise input by the external power supply module. In the embodiment of the present application, the power isolation module is connected between the external power supply and the first switch chip and the second switch chip, and the power isolation module responds to the first power signal, performs noise reduction filtering on the first power signal, and obtains a relatively pure second power signal, wherein the second power signal is a power signal after noise reduction processing by the power isolation module, and outputs the second power signal to the first switch chip and the second switch chip. On the one hand, it is conducive to ensuring that the external power supply supplies power to the first switch chip and the second switch chip normally, and on the other hand, it is prevented that the external power supply introduces high-frequency noise interference, which will be directly brought from the input end of the external power supply to the signal output end, and the power signal isolation between ports is realized through the power isolation module, so as to avoid the phenomenon of distortion of audio or video decoding equipment analysis caused by direct transmission of power signal between the external power supply and the chip.

[0097] Figure 4 A schematic diagram of a third embodiment of the isolation module provided in the present application, optionally, the isolation module is a signal isolation module and a power isolation module, the first signal includes a first electrical signal and a first power signal, and the second signal includes a second electrical signal and a second power signal;

[0098] The input end of the signal isolation module is connected to the output end of the first switch chip;

[0099] The output end of the signal isolation module is connected to the input end of the second switch chip;

[0100] The input end of the power isolation module is connected to an external power supply;

[0101] The power isolation module is connected to the first switch chip and the second switch chip;

[0102] The signal isolation module converts the first electrical signal into the second electrical signal in response to the first electrical signal transmitted by the first switch chip, and sends the second electrical signal to the second switch chip to isolate the direct transmission of signals between the first switch chip and the second switch chip;

[0103] The power isolation module responds to the first power signal transmitted by the external power supply, performs noise reduction filtering on the first power signal, obtains the second power signal, and outputs the second power signal to the first switch chip and the second switch chip, so that the external power supply can normally supply power to the first switch chip and the second switch chip.

[0104] The present application provides a possible implementation manner, when the isolation module is a signal isolation module and a power isolation module, the first signal includes a first electrical signal and a first power signal, and the second signal includes a second electrical signal and a second power signal.

[0105] The signal input module inputs a first electrical signal to the first switch chip, the first switch chip responds to the first electrical signal, and sends the first electrical signal to the signal isolation module, the signal isolation module performs noise reduction or denoising processing on the first electrical signal, and converts the first electrical signal into a relatively pure second electrical signal. The signal isolation module sends the processed second electrical signal to the second switch chip, and the second switch chip outputs it to the signal output module.

[0106] The power isolation module responds to the first power signal input by the external power supply, performs noise reduction filtering on the first power signal to obtain a relatively pure second power signal, and outputs the second power signal to the first switch chip and the second switch chip, so that the external power supply can normally supply power to the first switch chip and the second switch chip.

[0107] The signal input module and the power isolation module are used to prevent the signal input terminal and / or the external power supply from introducing high-frequency or low-frequency noise interference, which will be directly brought from the input terminal to the signal output terminal, causing the audio or video decoding device to distort the analysis.

[0108] Figure 5 A schematic diagram of a first isolation module and a second isolation module provided in the present application. Optionally, the isolation module includes a first isolation module and a second isolation module;

[0109] The first end of the first isolation module is connected to the first switch chip;

[0110] The second end of the first isolation module is connected to the first end of the second isolation module;

[0111] The second end of the second isolation module is connected to the second switch chip;

[0112] The third end of the first isolation module is connected to the external power supply;

[0113] The third end of the second isolation module is connected to the external power supply;

[0114] The first isolation module and the second isolation module respond to the first signal and perform noise reduction or denoising processing on the first signal to obtain the second signal.

[0115] The present application provides a possible implementation mode, in which two isolation modules are provided for the first switch chip and the second switch chip respectively. In view of this, the isolation module described in the embodiment of the present application includes a first isolation module and a second isolation module, the first isolation module is connected to the first switch chip, the second isolation module is connected to the second switch chip, and the first isolation module is connected to the second isolation module.

[0116] The signal input port inputs a first electrical signal carrying noise, and the first electrical signal is converted into a relatively pure second electrical signal through the first isolation module and the second isolation module. The second isolation module then sends the second electrical signal to the second switch chip, and the second switch chip outputs the second electrical signal to the signal output end.

[0117] An external power supply inputs a first power supply signal carrying high-frequency interference, and passes through a first isolation module and a second isolation module to perform noise reduction or denoising on the first power supply signal to obtain a second power supply signal. The first isolation module and the second isolation module then input the second power supply signal into the first switch chip and the second switch chip, so that the external power supply can normally supply power to the first switch chip and the second switch chip.

[0118] The first isolation module and the second isolation module are used to isolate electrical signals between chips, and to isolate power supply signals between an external power supply and the first switch chip and the second switch chip, thereby preventing noise interference introduced by the signal input end and / or the external power supply from being directly brought from the input end to the output end, causing distortion in the analysis of audio or video decoding equipment.

[0119] Figure 6A schematic diagram of a first embodiment of a first isolation module and a second isolation module provided in the present application, optionally, the first signal is a first electrical signal, the second signal is a second electrical signal, the first isolation module is a first signal isolation module, the second isolation module is a second signal isolation module, and the first signal isolation module is connected to the second signal isolation module via an optical fiber;

[0120] The input end of the first signal isolation module is connected to the output end of the first switch chip, and the output end of the first signal isolation module is connected to the input end of the second signal isolation module;

[0121] The output end of the second signal isolation module is connected to the input end of the second switch chip;

[0122] The first signal isolation module converts the first electrical signal into the optical signal in response to the first electrical signal, and sends the optical signal to the second signal isolation module;

[0123] The second signal isolation module converts the optical signal into the second electrical signal in response to the optical signal, and sends the second electrical signal to the second switch chip to isolate direct signal transmission between the first switch chip and the second switch chip.

[0124] The present application provides a possible implementation manner, wherein the first isolation module is a first signal isolation module, the second isolation module is a second signal isolation module, the first signal isolation module is connected to the first switch chip, the second signal isolation module is linked to the second switch chip, and the first signal isolation module and the second signal isolation module are connected via optical fiber.

[0125] In the embodiments of the present application, the signal isolation module, the first signal isolation module, and the second signal isolation module can all be optical communication modules of various wavelengths, single-fiber transceiver optical modules, dual-fiber transceiver optical modules, or signal isolation circuits composed of separation devices such as optical isolation devices (BOSA, TOSA, ROSA). This solution uses a 1X9 single-fiber bidirectional SC transceiver optical module, which is mainly used to convert electrical signals and optical signals into each other, which is conducive to directly connecting the electrical signals of the isolation signal input end and the signal output end, thereby achieving the purpose of isolated transmission of electrical signals.

[0126] The first signal isolation module responds to the first electrical signal, converts the first electrical signal into an optical signal, and transmits the optical signal to the second signal isolation module. The second isolation module responds to the optical signal, converts the optical signal into a second electrical signal through photoelectric conversion, and outputs the second electrical signal to the second switch chip. The electrical signal isolation between chips is achieved through the first signal isolation module and the second signal isolation module, so as to avoid the direct transmission of electrical signals between chips, which will introduce noise interference into the signal input end and directly bring it to the signal output end, causing the audio or video decoding device to distort the analysis.

[0127] Figure 7 A schematic diagram of a second embodiment of the first isolation module and the second isolation module provided in the present application, optionally, the first signal is a first power signal, the second signal is a second power signal, the isolation module includes a first isolation module and a second isolation module, the first isolation module is a first power isolation module, the second isolation module is a second power isolation module, the first power isolation module is connected to an external power supply through one end of a power cord, and the second power isolation module is connected to the external power supply through the other end of a power cord;

[0128] The input end of the first power isolation module is connected to the external power supply, and the output end of the first power isolation module is connected to the input end of the first switch chip. When the external power supply is subject to high-frequency interference, the first power isolation module shields the high-frequency interference so that the external power supply can normally supply power to the first switch chip;

[0129] The input end of the second power isolation module is connected to the external power supply, and the output end of the second power isolation module is connected to the input end of the second switch chip. When the external power supply is subject to high-frequency interference, the second power isolation module shields the high-frequency interference so that the external power supply can normally supply power to the second switch chip.

[0130] The present application provides a possible implementation scheme, wherein the first isolation module is a first power isolation module, and the second isolation module is a second power isolation module. One end of the first power isolation module is connected to an external power supply, and the other end is connected to a first switch chip. One end of the second power isolation module is connected to an external power supply, and the other end is linked to a second switch chip. The first signal isolation module and the second signal isolation module are connected to the external power supply via a power line.

[0131] In the embodiment of the present application, the power isolation module, the first power isolation module, and the second power isolation module can all be DC-DC direct current isolation power supply modules, AC-DC alternating current isolation power supply modules or isolated power supply lines composed of separation components. This solution uses the VRB_S6WR3 DC-DC direct current isolation power supply module, which is mainly used to shield high-frequency radiation interference from the power supply end, which is beneficial to provide a clean power supply to the switch chip.

[0132] The first power isolation module responds to the first power signal input by the external power supply, performs noise reduction or denoising processing on the first power signal to obtain a relatively pure second power signal, and outputs the second power signal to the first switch chip. The second power isolation module responds to the first power signal input by the external power supply, performs noise reduction or denoising processing on the first power signal to obtain a relatively pure second power signal, and outputs the second power signal to the second switch chip.

[0133] The first power isolation module and the second power isolation module are beneficial to ensuring that the external power supply normally supplies power to the first switch chip and the second switch chip, and on the other hand, it is beneficial to achieve power signal isolation between ports, thereby avoiding the direct transmission of power signals between the external power supply and the chip. The external power supply introduces high-frequency noise interference, which is directly brought from the input end of the external power supply to the signal output end, causing distortion in the analysis of audio or video decoding equipment.

[0134] Figure 8 A schematic diagram of a third embodiment of the first isolation module and the second isolation module provided in the present application, through Figure 6 and Figure 7 It can be deduced that the first signal includes a first power supply signal and a first electrical signal, the second signal includes a second power supply signal and a second electrical signal, the isolation module includes a first isolation module and a second isolation module, the first isolation module includes a first power supply isolation module and a first signal isolation module, and the second isolation module includes a second power supply isolation module and a second signal isolation module.

[0135] The first power isolation module and the second power isolation module are helpful to achieve power signal isolation between ports, avoiding direct transmission of power signals between external power supply and chip. The first signal isolation module and the second signal isolation module are helpful to achieve electrical signal isolation between chips, avoiding direct transmission of electrical signals between chips. Noise interference introduced into the signal input terminal and / or the external power supply will be directly brought from the input terminal to the output terminal, causing distortion in the analysis of audio or video decoding equipment.

[0136] Fig. 9A schematic diagram of a rate control module provided in an embodiment of the present application, wherein the optional noise isolation switch further includes a rate control module, and the rate control module includes a switch, a single-chip microcomputer and an optical isolation device;

[0137] The first end of the rate control module is connected to the output end of the signal input module;

[0138] The second end of the rate control module is connected to the input end of the first switch chip;

[0139] The third terminal of the rate control module is connected to the output terminal of the second switch chip;

[0140] The fourth terminal of the rate control module is connected to the input terminal of the signal output module.

[0141] Optionally, the real-time rate at which the electrical signal is input to the signal input module is controlled by controlling the switch to avoid distortion of the electrical signal output from the signal output module due to the signal transmission speed being greater than a preset threshold.

[0142] The noise isolation switch described in the embodiment of the present application also includes a rate control module, which includes a toggle switch, a single-chip microcomputer and an optical isolation device. The rate control module is connected between the signal input end and the first switch chip, and controls the real-time rate of the first electrical signal input to the first switch chip through the toggle switch. The rate control module is also connected between the second switch chip and the signal output module, and controls the real-time rate of the second electrical signal output by the second switch chip to the signal output module through the toggle switch. The real-time rate of the first electrical signal input and the real-time rate of the second electrical signal output are adjusted by the rate control module to achieve the purpose of adapting to more types of audio and video equipment.

[0143] The embodiment of the present application provides a noise isolation switch, which isolates the signals of the input end and the output end by the above method, and directly connects them to achieve the purpose of signal noise isolation, and avoids the noise interference introduced by the signal input port or the power line from being directly brought into the output port, resulting in the phenomenon of distortion of the analysis of the audio or video decoding device. Using the noise isolation switch provided in the embodiment of the present application, the audio and video signals are transmitted through the IP network, which can effectively improve the decoding noise interference caused by the network to the speakers, audio, display, etc., and optimize the sound and image output performance.

[0144] The module embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0145] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0146] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0147] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A noise isolation switch, characterized in that: The noise isolation switch comprises a signal input module, a first switch chip, an isolation module, a second switch chip and a signal output module; The input end of the first switch chip is connected to the signal input module; The isolation module is connected to the first switch chip and the second switch chip; The output end of the second switch chip is connected to the signal output module; The isolation module, in response to the first signal, performs noise reduction or denoising processing on the first signal to obtain a second signal; The first signal is a signal carrying noise input by the signal input module and / or the external power supply; The second signal is a signal output after being subjected to noise reduction or denoising processing by the isolation module.

2. The noise isolation switch according to claim 1, characterized in that: The isolation module is a signal isolation module, the first signal is a first electrical signal, and the second signal is a second electrical signal; The input end of the signal isolation module is connected to the output end of the first switch chip; The output end of the signal isolation module is connected to the input end of the second switch chip; The signal isolation module converts the first electrical signal into the second electrical signal in response to the first electrical signal transmitted by the first switch chip, and sends the second electrical signal to the second switch chip to isolate the direct transmission of signals between the first switch chip and the second switch chip; The first electrical signal is an electrical signal carrying noise input by the signal input module to the first switch chip; The second electrical signal is an electrical signal output by the signal output module after being subjected to noise reduction or denoising processing by the noise isolation switch.

3. The noise isolation switch according to claim 1, characterized in that: The isolation module is a power isolation module, the first signal is a first power signal, and the second signal is a second power signal; The input end of the power isolation module is connected to an external power supply; The output end of the power isolation module is connected to the input ends of the first switch chip and the second switch chip; When the external power supply is subject to high-frequency interference, the first power signal is input to the power isolation module, the power isolation module shields the high-frequency interference, performs noise reduction filtering on the first power signal, obtains the second power signal, and outputs the second power signal to the first switch chip and the second switch chip, so that the external power supply supplies power to the first switch chip and the second switch chip normally; The first power signal is a power signal carrying noise input by the external power supply; The second power signal is a power signal that has been subjected to noise reduction or denoising processing by the isolation module.

4. The noise isolation switch according to claim 1, characterized in that: The isolation module is a signal isolation module and a power isolation module, the first signal includes a first electrical signal and a first power signal, and the second signal includes a second electrical signal and a second power signal; The input end of the signal isolation module is connected to the output end of the first switch chip; The output end of the signal isolation module is connected to the input end of the second switch chip; The input end of the power isolation module is connected to an external power supply; The power isolation module is connected to the first switch chip and the second switch chip; The signal isolation module converts the first electrical signal into the second electrical signal in response to the first electrical signal transmitted by the first switch chip, and sends the second electrical signal to the second switch chip to isolate the direct transmission of signals between the first switch chip and the second switch chip; The power isolation module responds to the first power signal transmitted by the external power supply, performs noise reduction filtering on the first power signal, obtains the second power signal, and outputs the second power signal to the first switch chip and the second switch chip, so that the external power supply can normally supply power to the first switch chip and the second switch chip.

5. The noise isolation switch according to claim 1, characterized in that: The isolation module includes a first isolation module and a second isolation module; The first end of the first isolation module is connected to the first switch chip; The second end of the first isolation module is connected to the first end of the second isolation module; the second end of the second isolation module is connected to the second switch chip; The third end of the first isolation module is connected to the external power supply; The third end of the second isolation module is connected to the external power supply; The first isolation module and the second isolation module respond to the first signal and perform noise reduction or denoising processing on the first signal to obtain the second signal.

6. The noise isolation switch according to claim 5, characterized in that: The first signal is a first electrical signal, the second signal is a second electrical signal, the first isolation module is a first signal isolation module, the second isolation module is a second signal isolation module, and the first signal isolation module is connected to the second signal isolation module via an optical fiber; The input end of the first signal isolation module is connected to the output end of the first switch chip, and the output end of the first signal isolation module is connected to the input end of the second signal isolation module; The output end of the second signal isolation module is connected to the input end of the second switch chip; The first signal isolation module converts the first electrical signal into the optical signal in response to the first electrical signal, and sends the optical signal to the second signal isolation module; The second signal isolation module converts the optical signal into the second electrical signal in response to the optical signal, and sends the second electrical signal to the second switch chip to isolate direct signal transmission between the first switch chip and the second switch chip.

7. The noise isolation switch according to claim 3, characterized in that: The first signal is a first power signal, the second signal is a second power signal, the isolation module includes a first isolation module and a second isolation module, the first isolation module is a first power isolation module, the second isolation module is a second power isolation module, the first power isolation module is connected to an external power supply through one end of a power line, and the second power isolation module is connected to the external power supply through the other end of a power line; The input end of the first power isolation module is connected to the external power supply, and the output end of the first power isolation module is connected to the input end of the first switch chip. When the external power supply is subject to high-frequency interference, the first power isolation module shields the high-frequency interference so that the external power supply can normally supply power to the first switch chip; The input end of the second power isolation module is connected to the external power supply, and the output end of the second power isolation module is connected to the input end of the second switch chip. When the external power supply is subject to high-frequency interference, the second power isolation module shields the high-frequency interference so that the external power supply can normally supply power to the second switch chip.

8. The noise isolation switch according to claim 1, characterized in that: The noise isolation switch also includes a rate control module, which includes a switch, a single-chip microcomputer and an optical isolation device; The first end of the rate control module is connected to the output end of the signal input module; The second end of the rate control module is connected to the input end of the first switch chip; The third terminal of the rate control module is connected to the output terminal of the second switch chip; The fourth terminal of the rate control module is connected to the input terminal of the signal output module.

9. The noise isolation switch according to claim 8, characterized in that: The real-time rate of the electrical signal input to the signal input module is controlled by controlling the switch to avoid distortion of the electrical signal output from the signal output module caused by the signal transmission speed being greater than a preset threshold.

10. The noise isolation switch according to claim 2, characterized in that: The signal isolation module is a single-fiber transceiver integrated optical module or a signal isolation circuit composed of optical isolation devices.

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