KR20060014489A - Method and device for transmitting non-broadband signals using power lines as media - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for transmitting power line-mediated non-wideband signals, wherein multiple signals (including voice, video, data data, etc.) are divided into frequencies and then mixed in a linear algebraic manner. To form a mixed modified signal, and to receive it in a non-broadband to transmit the mixed bottle-shaped signal to a general power transport line (for example, AC power line) or any transmission medium, and to transmit the signal according to a time interval. By splitting the frequency and dropping all of the selected signal frequencies into the required low frequency range, linear independence appears.

Non-Wideband Signal Transmission Method with Power Lines, Non-Wideband Signal Transmission Device with Power Lines, Powerline Signal Transmission Method, Powerline Signal Transmission Device

Description

Method and device for transmitting non-broadband signals using power lines as media}

1 is a structure diagram of a voice signal transmission according to the present invention.

2 is an operational block diagram of a transmitter signal mixing and separating apparatus according to the present invention.

3 is an operational block diagram of a receiving end signal mixing and separating apparatus according to the present invention;

* Description of symbols for main parts of drawing codes *

11 Transmitter signal mixing and separation device 12 Transmitter interface circuit

13 Receiver signal mixing and separating device 14 Receiver interface circuit

15 telephone 16 power line

17 Signal Modulator 18 Signal Separator

19 Signal Mixer Circuit 20 Selector

21 Telephone Circuits 22 Radio Circuits

The present invention relates to a method and apparatus for transmitting a signal. More specifically, the present invention relates to a method and apparatus for transmitting a non-broadband signal through which power lines are mediated, based on a mixing and separation technique of multiple signals.

The transfer of communication data between devices by combining carrier signals on power carriers has already been applied in home electrical control systems, but power carriers are inherently problematic in that signals are complex and easily attenuated to affect communication quality. The problem of how to eliminate the interference between signals when transmitting multiple signals and how to increase the signal transmission rate and increase the transmission speed when transmitting a large amount of signals is a problem of power transmission mediated signal transmission. Technology is becoming a difficult problem to overcome.

As a prior art, World Patent No. 99/48218 discloses a power line carrier communication device, which combines or inserts a high speed data device and a base unit of the power line carrier communication device. It slows down the data transfer rate of the data device when the signal weakens. The power line carrier communication device operates by combining a power line carrier extension unit. When performing data transmission to a user's electronic facility, the power line carrier extension device uses a standard telephone line and an AC power line to the electronic facility. Provides reception and transmission of information via However, when transmitting multiple signals at the same time by power line carrier communication, it becomes very complicated. Essentially, a signal transmission method and apparatus for power line mediation should be implemented based on an operation capable of processing mixing and separation of multiple signals. do.

Accordingly, the present invention has been made to solve the above-described problems of the conventional power line communication device, the main object of the present invention is to provide a method for transmitting multiple signals at the same time in a non-broadband situation by the power line.

It is still another object of the present invention to provide an apparatus for transmitting multiple signals at the same time in a non-broadband situation by means of a power line.

It is still another object of the present invention to provide a method for transmitting multiple signals simultaneously by means of a power line, which can increase the signal transmission rate and eliminate blockage.

It is still another object of the present invention to provide an apparatus for transmitting multiple signals simultaneously via a power line, which can increase the signal transmission rate and remove the blockage.

It is another object of the present invention to provide a signal transmission method that can eliminate a signal interference problem.

It is still another object of the present invention to provide a signal transmission apparatus capable of eliminating a signal interference problem.

Another object of the present invention is to provide a signal transmission method that can reduce the cost by reducing the number of power lines required for multiple signal transmission.

Still another object of the present invention is to provide a signal transmission apparatus that can reduce costs by reducing the number of power lines required for multiple signal transmission.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-wideband signal transmission apparatus in which power lines are mediated, and the mixing and separation techniques of multiple signals are based on transporting a plurality of power signals on a power line between a transmitting end and a receiving end. Signals, video signals, data data signals, etc., these signals are mixed to produce a single low frequency mixed distortion signal, and under non-broadband conditions the mixed modified signal may be a common power transport line (e.g. AC power line) or Or in combination with any transmission medium.

The transmitting end includes a transmission signal processor and an interface circuit. The transmission signal processor is coupled with a power supply line via the interface circuit, and the low frequency mixed distortion signal of the transmission signal processor is coupled up to the power line. The transmission signal processor transports a plurality of power signals, processes each transmission signal with one signal modifying device and a signal separating device, and transmits the multiple transformed signals to a coefficient function having linear independence. Mixing is performed to form one low frequency mixed distortion signal.

Each receiving end includes a reception signal processor and an interface circuit, the reception signal processor being coupled with a power supply line via the interface circuit, and the reception signal processor is coupled with a low frequency mixed strain signal from the power line. The received signal processor includes a plurality of sets of signal modifiers, signal separators, and selectors, wherein the received signal processor is coupled with a mixed transform signal from the power line, and the selector selects one set of signal modifiers and signal separators. In this case, one of a plurality of power signals corresponding to each other is received. The selected signal transforming device and the signal separating device establish an independent equation according to a coefficient function having linear independence, and multiple transformed signals become unknown to solve the simultaneous equation. In addition, the corresponding power signal is reduced, so that signals are transmitted and received in both directions of the transmitting end and the receiving end. The following is a further description, which is based on the techniques disclosed in Taiwan Patent No. 117048 and US Patent No. 6,442,224 for mixing and separating multiple power signals between the transmit signal processor and the receive signal processor.

The signal mixing method performed by the signal modifying apparatus includes the following steps:

] 구간 사이의 m(m은 양의 정수를 나타냄)개 전력신호

(t∈[

] ;

∈R ; t는 시간변수)에서 n개의 샘플

(i=1,2,...m ; j=1,2, ...n)를 추출하는 단계; first [

M powers between intervals (m is a positive integer)

( t ∈ [

];

∈R; t is n samples of the time variable)

extracting ( i = 1,2, ... m; j = 1,2, ... n);

, i=1,2,...m ; j=1,2,...n}를 선택하여, 계수함수

에 의하여 [

] 사이에서 상호 선형 독립을 형성하도록 하는 단계; 및Coefficient function set {

, i = 1,2, ... m; by selecting j = 1,2, ... n}

By [

To form mutually linear independence therebetween; And

의 변형함수

를 세우고, 다시 모든 변형함수

를 서로 합산하여 상기 혼합 변형신호

를 얻는 단계: 이와 같이 SM(t)는 혼합 후의 특정주파수를 갖는 혼합변형신호이다.

Transform function of

Erect all the transform functions

Are mixed with each other to add the mixed strain signal.

The step of obtaining: The SM (t) is thus a mixed modified signal having a specific frequency after mixing.

The signal separation method performed by the signal separation device includes the following steps:

(i=1,2,...m ; j=1,2, ...n)를 추출하고, 각

를 계수함수

에 대응시키는 단계;Mxn samples of the modified mixed signal SM (t)

extract ( i = 1,2, ... m; j = 1,2, ... n),

Coefficient function

To correspond to;

에 의하여 [

]사이에서 상호 선형 독립을 형성하도록 하고,

가 미지수가 되도록 하는 mxn개의 독립방정식을 세우는 단계; 및Counting function

By [

To form a linear independence between

Constructing mxn independent equations such that the unknowns are unknown; And

의 해를 구하여, 각각의 전력신호

를 환원시키는 단계. From the m-by-n independent equations using the method of solving the system of equations

To solve each power signal

Reducing the.

, i=1, 2, ..., m를 수송하는데, 다음과 같은 단계를 포함한다:The non-wideband signal transmission apparatus in which the power line is mediated according to the present invention includes m power signals on a power line between a transmitting end and a receiving end by a non-wideband signal transmission method in which the power line is mediated.

, i = 1, 2, ..., m, comprising the following steps:

를 처리하여 하나의 혼합변형신호 SM(t)를 생성하는 단계; The transmitter has m power signals

Processing to generate one mixed modified signal SM (t);

Transmitting the mixed modified signal SM (t) by combining with a power line at a specific frequency;

Combining the mixed modified signal SM (t) from the power line; And

를 환원시키는 단계; 그 중 송신단과 수신단 사이의 신호전송은 다음과 같은 특징을 포함한다: The receiving end extracts a sample of the mixed modified signal SM (t) and selectively selects each power signal

Reducing the; Among them, the signal transmission between the transmitting end and the receiving end includes the following features:

] 구간 사이의 m(m은 양의 정수를 나타냄)개 전력신호

(t∈[

] ;

∈R ; t는 시간변수)에서 n개의 샘플

(i=1,2,...m ; j=1,2, ...n)를 추출하는 단계; 계수함수 집합 {

, i=1,2,...m ; j=1,2,...n}를 선택하여, 계수함수

에 의하여 [

] 사이에서 상호 선형 독립을 형성하도록 하는 단계; 및

의 변형함수

를 세우고, 다시 모든 변형함수

를 서로 합산하여 상기 혼합 변형신호

를 얻는 단계: At the transmitting end, [

M powers between intervals (m is a positive integer)

( t ∈ [

];

∈R; t is n samples of the time variable)

extracting ( i = 1,2, ... m; j = 1,2, ... n); Coefficient function set {

, i = 1,2, ... m; by selecting j = 1,2, ... n}

By [

To form mutually linear independence therebetween; And

Transform function of

Erect all the transform functions

Are mixed with each other to add the mixed strain signal.

Steps to get:

Transmitting the mixed modified signal SM (t) at a specific frequency of the power line; And

을 추출하고, 각각의 샘플

를 계수함수

에 대응시키는 단계; 계수함수

에 따라 선형 독립의 특성을 갖게 되는데,

가 미지수가 되는 mxn개의 독립방정식을 세우는 단계; 및 연립방정식을 mxn개의 독립방정식으로부터 풀어

의 해를 구하여, 각각의 전력신호

를 환원시키는 단계.At the receiving end, mxn samples from the mixed modified signal SM (t)

Extract each sample

Coefficient function

To correspond to; Counting function

Depending on the characteristics of linear independence,

Constructing mxn independent equations that become unknowns; And the system of equations from mxn independent equations

To solve each power signal

Reducing the.

When explaining the preferred embodiment of the present invention by the accompanying drawings as follows.

1 is a structural diagram showing a voice signal transmission as a specific embodiment according to the present invention. In the above specific embodiment, the present invention is a power line-mediated non-wideband signal transmission apparatus, wherein the above-described multiple signal mixing and separation technique is based on transporting a plurality of voice signals on a power line between a transmitter and a plurality of receivers. Thus, the signal transmission between the transmitting end and the receiving end is mixed to form a single low frequency mixed modified signal, and the mixed modified signal is transmitted through a specific low frequency via an interface line by a general power transport line (for example, AC power line) or arbitrary It is transmitted in combination with a transmission medium of which the specific frequency is preferably 4KHz.

In this specific embodiment, the transmitting end comprises a signal mixing and separating device, which carries m voice signals; The interface circuit combines a mixed modified signal processed by the signal mixing and separating device on one power line by a specific low frequency, wherein the signal mixing and separating device uses the above-mentioned multi-signal mixing and separation technique of m voices. It is based on processing signals. One receiving end comprises one signal mixing and separating device, optionally carrying one of m voice signals; The telephone receives and transmits one of m voice signals selectively taken by the signal mixing and separating device; The interface circuit couples the mixed strained signal processed by the signal mixing and separating device to the power line at one particular low frequency, wherein the signal mixing and separating device is a combination of the multiple signal mixing and separation techniques described above. Based on processing one of m voice signals.

2 is a block diagram of an apparatus for mixing and separating transmitter signals in an embodiment according to the present invention. The transmitter signal mixing and separating apparatus includes m sets of signal modulators and signal separators, each carrying m voice signals; The signal mixing circuit adds a total of m modified signals to form one mixed modified signal. The transmitter signal mixing and separation device implements the above-described mixing and separation techniques of the multiple signals using an integrator, a differentiator, a multiplier, an add / drop calculator, an A / D converter, an operational amplifier, a buffer, and the like.

3 is a block diagram of a receiver signal mixing and separation apparatus according to an embodiment of the present invention. The receiving end signal mixing and separating apparatus includes m sets of signal modifying apparatuses and signal separating apparatuses, each of which m-processes the speech signals; The selector selects one of m sets of signal modulators and signal splitters, and receives the selected voice signal and transmits the selected voice signal to the telephone through a telephone circuit or a radio circuit; The signal mixing circuit allows the mixed modified signal to form one mixed modified signal. The receiver signal mixing and separating device implements the above-described mixing and separation techniques of the multiple signals using an integrator, a differentiator, a multiplier, a deceleration calculator, an A / D converter, a D / A converter, an operational amplifier, a buffer, and the like.

With the above-described configuration, the present invention provides a method and apparatus for transmitting multiple signals at the same time in a non-broadband situation by power line mediation, which can increase the signal transmission rate, eliminate blockage, and eliminate signal interference problems. In addition, the cost can be reduced by reducing the number of power lines required for multiple signal transmission.

After the embodiments of the present invention have been described in detail, those skilled in the art to which the present invention pertains will clearly understand this, and various applications and improvements can be made without departing from the scope and spirit of the following claims. The invention is not restricted to the implementation of the embodiments of the detailed description.

Claims (12)

A kind of power line is mediated and m power signals on the power line between the transmitting end and the receiving end

A non-wideband signal transmission method for transmitting, i = 1,2, ..., m, M power signals at the transmitter

Processing to obtain one mixed modified signal SM (t); Coupling the mixed modified signal SM (t) to one specific frequency and transmitting the combined signal on the power line; Coupling the mixed strain signal SM (t) from the power line; And The receiver extracts a sample from the mixed modified signal SM (t) and selectively selects each power signal.

Reducing a; Signal transmission between the transmitter and the receiver, At the transmitting end, [

M power signals between the sections

( t ∈ [

];

∈R; t is n samples of the time variable)

extracting ( i = 1,2, ... m; j = 1,2, ... n); Coefficient function set {

, i = 1,2, ... m; by selecting j = 1,2, ... n}

By [

To form mutually linear independence therebetween;

Transform function of

Erect all the transform functions

Are mixed with each other to add the mixed strain signal.

Obtaining; Transmitting the mixed modified signal SM (t) at a specific frequency on the power line; And At the receiving end, mxn samples from the mixed modified signal SM (t)

Extract each sample

Coefficient function

To correspond to; Counting function

Depending on the characteristics of linear independence,

Constructing mxn independent equations that become unknowns; And the system of equations from mxn independent equations

To solve each power signal

A non-wideband signal transmission method, characterized in that the power line is mediated comprising the step of reducing. The method of claim 1, The power signal

The non-wideband signal transmission method is a power line mediated, characterized in that the data, such as text, data, audio or video. The method of claim 1, And said specific frequency is preferably 4KHz. It is a non-wideband signal transmission device that is a kind of power line, A non-broadband signal transmission method in which m power signals are transported on a power line between a transmitting end and a receiving end, and the power line described in claim 1 is mediated. Broadband signal transmitter. It is a non-wideband signal transmission device that is a kind of power line, M power signals on the power line between the transmitter and receiver

, i = 1,2, ..., m, the device being M power signals at the transmitter

A transmission signal processor for processing the signal to form one mixed modified signal SM (t); A transmission interface circuit for coupling the mixed modified signal SM (t) to one specific frequency on the power line; The power line for transmitting the mixed modified signal SM (t) in a non-wideband; A transmission interface circuit coupled with the mixed modified signal SM (t) at the specific frequency from the power line; And Each power signal is selectively extracted by extracting a sample from the mixed modified signal SM (t) at the receiving end.

Receiving signal processor for reducing the, Signal transmission between the transmission signal processor and the reception signal processor, At the transmitting end, [

M power signals between the sections

( t ∈ [

];

∈R; t is n samples of the time variable)

extracting ( i = 1,2, ... m; j = 1,2, ... n); Coefficient function set {

, i = 1,2, ... m; by selecting j = 1,2, ... n}

By [

To form mutually linear independence therebetween; And

Transform function of

Erect all the transform functions

Are mixed with each other to add the mixed strain signal.

Obtaining; And At the receiving end, mxn samples from the mixed modified signal SM (t)

Extract each sample

Coefficient function

To correspond to; Counting function

Depending on the characteristics of linear independence,

Constructing mxn independent equations that become unknowns; And the system of equations from mxn independent equations

To solve each power signal

A non-wideband signal transmission device is a power line is characterized in that it comprises a step of reducing. The method of claim 5, The power signal

The non-wideband signal transmission device is a power line is characterized in that the data, such as text, data, audio or video data. The method of claim 5, The transmission processor comprises: m sets of signal modifying devices and signal separating devices each transmitting m audio signals; And a signal mixing circuit for mixing the m modified signals to generate one mixed modified signal. The method of claim 5, And the transmission signal processor and the transmission interface circuit are combined into one. The method of claim 5, The received signal processor comprises: m sets of signal modifying devices and signal separating devices for respectively reducing m audio signals; a selector used to select one of the m set of signal modulators and signal splitters; And a signal mixing circuit for converting the mixed modified signal into a single mixed modified signal. The method of claim 5, And the reception signal processor and the reception interface circuit are combined as one. The method of claim 5, And the power line is an AC power transport line. The method of claim 5, And said specific frequency is 4 KHz.

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