TW201836350A - Signal processing method used for processing MoCA signal and signal amplifying device - Google Patents

Abstract

A signal processing method used for processing a Multimedia over Coax Alliance (MoCA) signal and a signal amplifying device, the method comprising: inputting a non-MoCA digital signal from a signal port, dividing the non-MoCA digital signal into two signals by means of a first distributor, inputting the first signal into a first duplexer, and inputting the second signal into a change-over switch, wherein a first signal channel is formed between the change-over switch and a first user port, a second signal channel is formed between the change-over switch and another user port, and a third signal channel is formed between the first user port and the other user port; when the signal amplifying device is powered on, the change-over switch switches the second non-MoCA signal to the second signal channel, and the non-MoCA signal from the other user port may be transmitted to the signal port by means of the first signal channel, the change-over switch and the first distributor; when the signal amplifying device is powered off, the second signal channel is switched off by the change-over switch; and the first user port and the other user port may carry out an MoCA signal interaction by means of the third signal channel.

Description

Signal processing method and signal amplifying device for processing MoCA signal

The present invention relates to signal processing techniques, and more particularly to a signal processing method and signal amplifying apparatus for processing a MoCA signal.

The need to use multiple multimedia devices in multiple locations has led to the establishment of the Coax Multimedia Alliance (MoCA). MoCA is the abbreviation of Multimedia over Coax Alliance, which is an international standard for interconnecting home network devices based on coaxial cables. The standard is mainly applied to the interconnection between home network devices, and specifies the physical layer of broadband video data, such as network video, voice, game, and the like, which is transmitted between various home network access devices and terminal devices by using a coaxial cable. Data link layer standard. MoCA technology typically operates at high frequencies and provides very high physical layer transmission bandwidth. Coaxial Cable Multimedia Alliance (MoCA) signals can be transmitted over shielded cables, providing high levels of security for user data, user personal information, and digital media, protecting users from interference and data theft. The threat is increasingly used. The coaxial cable can effectively transmit the cable television signal and the broadband signal in the same cable, and realize the fusion between the cable television signal network and the digital broadband network. In the current networking mode, the transmission distance of the cable is long, so that an amplifier is inevitably used in the signal transmission process. However, the existing amplifier signal is poorly isolated, and the signals of different channels enter the same duplexer after transmission, and then the signals are distributed to the respective users, resulting in poor signal strength and poor stability of the user terminal, especially for the MoCA signal. .

According to an aspect of an embodiment of the present invention, a signal processing method for processing a MoCA signal includes: inputting a non-MoCA digital signal from a signal ;; dividing a non-MoCA digital signal into two paths by a first distributor, The first signal is input to the first duplexer, and the second signal is input to the switch, wherein a first signal path is formed between the switch and the first user, and a switch is formed between the switch and the other user. a second signal path forms a third signal path between the first user port and the other user port; when the signal amplifying device is powered on, the switch switch switches the second non-MoCA signal to the second signal path, and is from another The non-MoCA signal of the user can be transmitted to the signal 经由 via the first signal path, the switch and the first distributor; when the signal amplifying device is powered off, the switch is disconnected from the second signal path; the first user 埠 and the other The user can interact with the MoCA signal via the third signal path. According to another aspect of an embodiment of the present invention, a signal amplifying apparatus for processing a MoCA signal includes: a signal 埠, a first user 埠, a first duplexer, a first splitter, a switch, Wherein the non-MoCA digital signal is input from the signal ,, and the non-MoCA digital signal is split into two paths through the first distributor, the first signal is input to the first duplexer, and the second signal is input to the switch, wherein the switch is switched A first signal path is formed between the user and the second signal path is formed between the switch and the other user, and a third signal path is formed between the first user and the other user, and the signal is amplified. When the device is powered on, the switch switches the second non-MoCA signal to the second signal path, and the non-MoCA signal from other users can be transmitted to the signal via the first signal path, the switch, and the first distributor; When the signal amplifying device is powered off, the switch disconnects the second signal path; the first user and other users can interact with the MoCA signal through the third signal path. According to the signal amplifying device of the embodiment of the present invention, for example, the signal amplifying device is provided with a second duplexer, a third duplexer, a first signal amplifying circuit and a second signal amplifying circuit in the second signal path, wherein the second pair The device separates the second non-MoCA digital signal into a low frequency digital signal and a high frequency digital signal, and the first signal amplifying circuit and the second signal amplifying circuit respectively amplify the low frequency digital signal and the high frequency digital signal, and the third duplexer The amplified low frequency digital signal and the high frequency digital signal are mixed, and the amplified mixed signal is output to other users. According to the signal amplifying device of the embodiment of the invention, for example, the first signal amplifying circuit and the second signal amplifying circuit respectively perform reverse amplification and forward amplification. According to the signal amplifying device of the embodiment of the present invention, for example, the mixed signal generated after being amplified is output to other users via the dispenser. According to the signal amplifying device of the embodiment of the present invention, for example, the mixed signal generated by the amplification is output to a plurality of other users via two or more stages of the splitter. According to the signal amplifying device of the embodiment of the invention, for example, a filter is provided between the third duplexer and the distributor. According to the signal amplifying apparatus of the embodiment of the present invention, for example, the MoCA signal from the first user 分配 is distributed to a plurality of other users by resistance matching in the third signal path. The signal amplifying device according to an embodiment of the present invention, for example, equally distributes MoCA signals from the first user to a plurality of other users. According to the signal amplifying device of the embodiment of the present invention, for example, a duplexer corresponding to each other user 混合 mixes the MoCA signal from the first user and the amplified mixed signal from the second signal path, and The mixed signal is output to the corresponding user 埠. According to the signal amplifying device of the embodiment of the present invention, for example, the duplexer corresponding to each other user 分离 separates the signal from the user 与其 corresponding thereto, and separates the separated MoCA signal from the corresponding user via the third The signal path is transmitted to the first duplexer, and the separated non-MoCA signal from the corresponding user is transmitted to the signal port via the second signal path, the switch, and the first distributor. A signal amplifying device according to an embodiment of the present invention, for example, a high frequency digital signal television signal and a low frequency digital signal is an internet digital signal whose mixed signal has a frequency ranging from 5 to 1002 MHz. A signal amplifying device according to an embodiment of the present invention, for example, a dispenser used in the signal amplifying device is a passive device for power distribution of a high frequency broadband signal. The signal amplifying device according to an embodiment of the present invention, for example, switches the active device of the relationship, and controls the conduction switching between the turns by the control signal. According to the signal amplifying device of the embodiment of the present invention, for example, the duplexer used in the signal amplifying device is capable of separating and mixing two band signals of the dual band signal, which is a three-turn filter passive device. According to the signal amplifying device of the embodiment of the invention, for example, the first signal amplifying circuit and the second signal amplifying circuit are both active amplifying circuits. According to an embodiment of the present invention, a signal processing method and a signal amplifying device capable of processing a MoCA signal with simple structure, good signal stability, high isolation, small signal attenuation, high transmission efficiency, and high efficiency are provided.

The technical solutions of the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the invention. It is apparent that the described embodiments are part of the embodiments of the invention, rather than all of the embodiments. Based on the described embodiments of the invention, it is within the scope of the invention to protect all other embodiments obtained by those skilled in the art without departing from the invention. Unless otherwise defined, the technical terms or scientific terms used herein are intended to be in the ordinary meaning as understood by those skilled in the art. The "first", "second" and similar terms used in the description of the present invention and the claims are not intended to indicate any order, number or importance, but only to distinguish different components. Similarly, the words "a" or "an" and the like do not denote a limitation of the number. The home signal usually includes TV signals and Internet access signals. These signals can be connected to the home via coaxial cable. With the popularity of interactive TV programs, the uplink signals of the households can also be connected by the same cable. transmission. Therefore, it is necessary to simultaneously process television signals, Internet digital signals, and transmission distribution of MoCA signals indoors. According to an embodiment of the present invention, a signal amplifying device for processing a MoCA signal is provided, which can simultaneously process a television signal (including a television interactive signal fed back by a user) and an internet digital signal (including user feedback). The Internet interactive signal), and the mixed signal formed by the combination of the three types of signals. 1 shows the schematic structure of a signal amplifying apparatus according to an embodiment of the present invention. As shown in FIG. 1, the signal amplifying device comprises: a plurality of distributors 11, 12, 13, 14; a plurality of duplexers 21, 22, 23, 24, 25, 26, 27; a switch 30; a load 40; Amplifying circuits 51, 52; a plurality of resistors 61, 62, 63, 64, 65; and a plurality of signals 埠 71, 72, 73, 74, 75, 76. The plurality of signals 上述 can be used as a signal input 埠, or can be used as a signal output 埠, and can simultaneously realize input and output of signals. And the signal 埠 can be implemented by a specific structure, or can be realized only by a cable connection. According to an embodiment of the invention, the mixed signal SH+SL of the television signal SH and the internet digital signal SL is input from the signal 埠71. The mixing of the television signal SH and the internet digital signal SL can be implemented in the frequency domain because the frequency range of the television signal SH is usually in a high frequency range with respect to the frequency range of the internet digital signal SL. Typically, the mixed signal SH+SL of the television signal SH and the internet digital signal SL has a frequency range of 5 to 1002 MHz. The mixed signal SH+SL is split into two paths via the distributor 11, one signal is input to the duplexer 21, and the other signal is input to the changeover switch 30. The distributor 11 can be used as a passive device for power distribution of high frequency broadband signals, and its bandwidth can cover a frequency range of 5 to 1002 MHz. The distributor 11 has a power signal distribution function, and can divide the high frequency broadband signal into two signals of the same power, and can also be divided into two signals with different powers. The distributor 11 also has the function of isolating the output signals and matching the input terminals to the output terminals. That is, the distributor itself passes through the signal path in both directions, and the signal can be input from the main channel of the distributor through the distributor to the branch of the distributor, or from the branch of the distributor through the distributor to the distributor. road. In addition, the splitter is a passive device that imposes a certain power attenuation on the distribution of the power signal. The switch 30 is an active device. As shown in FIG. 1, VDD is its power source, and Vct1 is its control signal, which controls the switching between RFC and RF1 and RF2. A duplexer used in a signal amplifying apparatus according to an embodiment of the present invention is a duplexer used in a dual band device capable of separating (forward) and mixing two frequency band signals of a dual band signal. (reverse), which is a 3 埠 filter passive device. When the signal amplifying device is energized, the switch 30 is energized to operate, and the RFC and RF1 of the switch 30 are turned on, and the SH+SL mixed signal input to the switch 30 is switched and transmitted to the duplexer 22, followed by the duplexer. 22 is separated into two signals SH and SL, and then the two signals are forward-amplified and reverse-amplified by the signal amplifying circuit 52 and the signal amplifying circuit 51, respectively. The SH signal amplified by the signal amplifying circuit 52 and the SL signal amplified by the signal amplifying circuit 51 are mixed by the duplexer 23 to generate a mixed signal SH+SL, which is output to the distributor 12, and then re-entered to the next stage through the distributor 12. The devices 13 and 14 are then output to the signals 埠 73, 74, 75 and 76 via the duplexers 24, 25, 26, 27, respectively. The other SH+SL signal input to the duplexer 21 is mixed with the MoCA signal S from the signals 埠73, 74, 75 and 76 in the duplexer 21 to generate a mixed signal RF, which is then output to the signal 埠72. On the other hand, the input from the signal 埠72 includes the MoCA signal and other frequency signals (for example, a television interactive signal, an internet interactive signal, etc., wherein the television interactive signal and the television signal have the same frequency range, the internet interactive signal and the internet The mixed signal of the network signal having the same frequency range can be separated by the duplexer 21 to separate the MoCA signal S, which is implemented via the resistors 61 and 62, 63, 64, 65 and by means of resistors relative to the signals 埠 73, 74 , 75 and 76 S signal distribution. More specifically, the S signals distributed via the resistors 61 and 62, 63, 64, 65 are input to the duplexers 24, 25, 26, and 27, respectively, and the mixed signals SH+SL distributed by the distributors 13 and 14 are also They are input to the duplexers 24, 25, 26, and 27, respectively. Therefore, the mixed signals SF including the MoCA signal and the SH+SL signal are generated by the mixing of the duplexers 24, 25, 26, and 27, respectively, and are outputted to the corresponding signals 埠73, 74, 75, and 76 by the respective duplexers. In the mixed signal SF, the MoCA signal and the SH+SL signal may be in different frequency bands. For example, the SH+SL signal has a frequency range of 5 to 1002 MHz, and the S signal (MoCA signal) has a frequency range of 1025 to 1675 MHz. The signal amplifying device according to the embodiment of the present invention uses a resistor to distribute the MoCA signal, and by using the characteristics of the resistor, by setting the resistor 61 and the resistors 62, 63, 64, 65 to have the same resistance value, the losses of the respective turns can be equal, and The levels are equal, the loss is small, and the flatness is good. On the other hand, using a distributor with a magnetic core to distribute the non-MoCA signal, a higher degree of isolation can be obtained. Signals 埠 73, 74, 75, and 76 can also be used as signal inputs, and are connected to different user or user devices, respectively. Specifically, the mixed signal SF including the MoCA signal and the SH+SL signal sent from different users or user equipments is separated into respective MoCA signals (S signals) and non-differers via the duplexers 73, 74, 75, and 76, respectively. The MoCA signal (SH+SL signal), then each MoCA signal passes through resistors 62, 63, 64 and 65, and then via resistor 61, to duplexer 21, which will source the SH+SL signal from distributor 11 and The S signals in the direction of the resistor 61 are mixed to generate a mixed signal SF, which is output to the signal 埠71. The non-MoCA signal (SH+SL signal) reaches the duplexer 23 via the distributors 13 and 14 and the distributor 12, separates into the signals SL and SH, and is forward-amplified and inverted by the signal amplifying circuit 51 and the signal amplifying circuit 52, respectively. After being amplified, the distributor 22 is input, mixed into a mixed signal SH+SL in the distributor 22, and then transmitted to the signal 埠71 via the switching switch 30 and the distributor 11 to realize interaction with the external non-MoCA signal. The signal amplifying circuits 51 and 52 are active amplifying circuits, and their functions are to compensate for the signal loss brought by the distributor. It can also be seen that, in combination with the signal flow direction of the input and output, the component connection line (signal transmission line) in FIG. 1 can realize bidirectional transmission. The signals 埠72 to 76 correspond to different users or user devices, and can also be referred to as user 埠, by which the input and output of signals can be realized. The input/output signals of such users may be mixed signals of MoCA signals and non-MoCA signals (for example, television signal/television interactive signals and/or internet signal/internet interactive signals), or may only include MoCA. Signal or non-MoCA signal. Depending on the situation, a filter 80 is provided between the duplexer 23 and the distributor 12, which may be a low pass filter of 1002 MHz to filter out clutter higher than the frequency of the SH+SL signal. Depending on the situation, a modem is provided between the signal receiver 埠 and the signal 埠 71, and the television signal and/or the internet signal of the home is switched to the SH and/or SL signals and output to the signal 埠71. That is, according to the different signal input requirements or settings, the mixed signal SH+SL of the SH signal and the SL signal can be transmitted, or only the SH signal or the SL signal can be transmitted. The structure of the signal amplifying device shown in FIG. 1 is merely exemplary. The signal 埠 72 can be interconnected with MoCA signals of a plurality of other signals by means of resistance distribution, which can be more than the four shown in FIG. 73 to 76), or less than 4 (for example, 2 or 1). The expansion of the number of interconnect signals can be achieved by configuring more resistors and dividers as needed. According to the signal amplifying device of the embodiment of the present invention, when the signal amplifying device is not powered, that is, when the switch 30 and the amplifying circuits 51 and 52 are not in operation, other passive devices in the amplifying device circuit can still be realized. Effective signal transmission. Specifically, when the signal amplifying device is not powered, the switch 30 is automatically placed at its RF2 end point (ie, the RFC and RF2 are turned on after the switch 30), thereby connecting the load 40 to the signal path. . The SH+SL signal input from the signal 埠71 is input to the duplexer 21 via the distributor 11, mixed with the MoCA signal from other user equipments in the duplexer 21 to generate a mixed signal RF, and then output to the signal 埠72; After the mixed signal RF input by the number 72 is separated by the duplexer 21, the SH+SL signal is output to the 埠71 via the distributor 11, and the S signal is output to the corresponding duplexer 73 via the resistor 61 and other resistors 62 to 65, respectively. 76; since neither the changeover switch 30 nor the amplifying circuits 51 and 52 are operated, the SH+SL signal input from the 埠71 does not pass through the switch 30-duplexer 22-amplifier 51 and 52-duplexer 23 - The splitters 12 to 14 - the paths of the duplexers 24 to 27 are transmitted to the signals 埠 73 to 76, and the signals 埠 73 to 76 are also unable to transmit the SH + SL signals to the signal 埠 71, that is, the AND signal 埠 73 The user equipment corresponding to 76 no longer interacts with the home signal 埠71 for the SH+SL signal, but the user equipment corresponding to the signals 埠73-76 can still interact with the user equipment corresponding to the signal 埠72 for the MoCA signal. That is, the user 埠 73 to 76 and the user are realized by the resistor 61 and the other resistors 62 to 65 The interaction of the MoCA signal S between 埠72. Then, the signal amplifying device according to the embodiment of the present invention can maintain the interaction of the MoCA signals between the user devices in a passive state, and at the same time enable a certain user device to still perform a television signal based on the / or interaction of internet signals. According to an embodiment of the present invention, a signal processing method and a signal amplifying device capable of processing a MoCA signal with simple structure, good signal stability, high isolation, small signal attenuation, high transmission efficiency, and high efficiency are provided. Those skilled in the art will appreciate that information and signals can be represented using any of a variety of different techniques and techniques. For example, data, instructions, commands, information, signals, bits, and symbols that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields, or magnetic particles, light fields, or optical particles, or any combination thereof. . The various components or units or components described in the embodiments of the invention can be implemented in any hardware structure or any combination of hardware and/or firmware that is deemed suitable for the intended application. The various method steps described in the embodiments of the invention may be performed by an array of logic elements, such as a processor. The term "module" or "unit" may also refer to any method, apparatus, device, unit or computer readable material storage medium, including computer instructions (eg, logical expressions) in the form of software, hardware or firmware. The above is only the exemplary embodiments of the present invention, and is not intended to limit the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

11‧‧‧Distributor

12‧‧‧Distributor

13‧‧‧Distributor

14‧‧‧Distributor

21‧‧‧Duplexer

22‧‧‧Duplexer

23‧‧‧Duplexer

24‧‧‧Duplexer

25‧‧‧Duplexer

26‧‧‧Duplexer

27‧‧‧Duplexer

30‧‧‧Toggle switch

40‧‧‧ load

51‧‧‧Signal amplification circuit

52‧‧‧Signal amplification circuit

61‧‧‧resistance

62‧‧‧resistance

63‧‧‧resistance

64‧‧‧resistance

65‧‧‧resistance

71‧‧‧Signal埠

72‧‧‧Signal

73‧‧‧Signal

74‧‧‧Signal

75‧‧‧Signal

76‧‧‧Signal

80‧‧‧ filter

RF‧‧ mixed signal

RF1‧‧‧埠

RF2‧‧‧埠

RFC‧‧‧Control

S‧‧‧ signal

SH‧‧‧ signal

SH+SL‧‧‧ mixed signal

SL‧‧‧ signal

Vct1‧‧‧ control signal

VDD‧‧‧ power supply

BRIEF DESCRIPTION OF THE DRAWINGS In the following, the embodiments of the present invention will be briefly described, and the drawings in the following description are only referring to some embodiments of the present invention, and are not intended to limit the invention. . 1 is a schematic structural diagram of a signal amplifying device according to an embodiment of the present invention.

Claims (16)

A signal processing method for processing a MoCA signal, wherein the signal processing method comprises: inputting a non-MoCA digital signal from a signal ,, dividing the non-MoCA digital signal into two paths by a first distributor, first The road signal is input to the first duplexer, and the second signal is input to the switch, wherein a first signal path is formed between the switch and the first user, and the switch is connected to other users. Forming a second signal path, forming a third signal path between the first user 埠 and the other user ,, and when the signal amplifying device is powered on, the switching switch will be the second way MoCA signal is switched to the second signal path, and non-MoCA signals from the other user can be transmitted to the signal via the first signal path, the switch and the first distributor; The switching switch disconnects the second signal path when the signal amplifying device is powered off; the first user and the other user are capable of using the third signal path Interactive MoCA signal. A signal amplifying device for processing a MoCA signal, comprising: a signal 埠 (71), a first user 埠 (72), a first duplexer (21), a first distributor (11), switching a switch (30), wherein a non-MoCA digital signal is input from the signal 埠 (71), and the non-MoCA digital signal is split into two paths through the first distributor (11), and the first signal is input to the first a duplexer (21), the second signal is input to the switch (30), wherein a first signal path is formed between the switch (30) and the first user 埠 (72), Forming a second signal path between the switch (30) and the other user 埠 (73, 74, 75, 76), the first user 埠 (72) and the other user 埠 (73) Forming a third signal path between 74, 75, 76), wherein the switch (30) switches the second non-MoCA signal to the second signal path when the signal amplifying device is energized, and Non-MoCA signals from the other user 埠 (73, 74, 75, 76) can be via the first signal path, the switch (30), and the first point The device (11) transmits to the signal 埠 (71); when the signal amplifying device is powered off, the switch (30) turns off the second signal path; the first user 埠 (72) And the other user 埠 (73, 74, 75, 76) can interact with the MoCA signal by the third signal path. The signal amplifying device of claim 2, wherein the signal amplifying device is provided with a second duplexer (22), a third duplexer (23), and a first signal amplifying circuit (51) in the second signal path. And a second signal amplifying circuit (52), wherein the second duplexer (22) separates the second non-MoCA digital signal into a low frequency digital signal (SL) and a high frequency digital signal (SH), The first signal amplifying circuit (51) and the second signal amplifying circuit (52) respectively amplify the low frequency digital signal (SL) and the high frequency digital signal (SH), and the third duplexer (23) The amplified low frequency digital signal and the high frequency digital signal are mixed, and the amplified mixed signal is output to other users. The signal amplifying device of claim 3, wherein the first signal amplifying circuit (51) and the second signal amplifying circuit (52) respectively perform reverse amplification and forward amplification. The signal amplifying device of claim 3, wherein the amplified mixed signal is output to the other user 埠 (73, 74, 75, 76) via the distributor (12, 13, 14). The signal amplifying device of claim 5, wherein the amplified mixed signal is output to a plurality of other users via two or more two-stage distributors (12, 13, 14) (73, 74, 75) , 76). A signal amplifying device according to claim 5, wherein a filter (80) is provided between the third duplexer (23) and the distributor (12). The signal amplifying device of claim 2, wherein the third signal path is matched by a resistor (61, 62, 63, 64, 65) to distribute the MoCA signal from the first user 埠 (72) To multiple other users 73 (73, 74, 75, 76). The signal amplifying apparatus of claim 8, wherein the MoCA signal from the first user 埠 (72) is equally distributed to a plurality of other users 73 (73, 74, 75, 76). The signal amplifying device of claim 8, wherein the duplexer corresponding to each of the other users 将 transmits the MoCA signal from the first user 埠 (72) and the amplified mixture from the second signal path The signals are mixed and the mixed signal (RF) is output to the corresponding user 埠. The signal amplifying device of claim 10, wherein the duplexer corresponding to each of the other users 分离 separates the signal from the user 对应 corresponding thereto, and separates the separated MoCA signal from the corresponding user via the Transmitting the three signal paths to the first duplexer (21), and separating the non-MoCA signals from the corresponding user via the second signal path, the switch (30), and the first assignment The device (11) is transmitted to the signal 埠 (71). The signal amplifying device of claim 3, wherein the high frequency digital signal (SH) is a television signal and the low frequency digital signal (SL) is an internet digital signal, and the mixed signal has a frequency range of 5 to 1002 MHz. . The signal amplifying device of claim 2, wherein the distributor used in the signal amplifying device is a passive device for power distribution of high frequency broadband signals. The signal amplifying device of claim 2, wherein the switching switch (30) is an active device, and the switching between the turns is controlled by the control signal. The signal amplifying device of claim 2, wherein the duplexer used in the signal amplifying device is capable of separating and mixing two band signals of the dual band signal, which is a three-turn filter passive device. The signal amplifying device of claim 2, wherein the first signal amplifying circuit (51) and the second signal amplifying circuit (52) are both active amplifying circuits.