JP2006074480A - Method and device for transmitting non-broadband signal with power line as intermediary - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and device for transmitting non-broadband signal having power line as the intermediary. <P>SOLUTION: Various signals (sound, image, digital data and the like) are subjected to frequency division and then mixed by a mathematic method of linear algebra to be a mixed deformation signal. The mixed deformation signal is subsequently connected to a general power transmitting line (for example, AC power source line) or an optional transmission medium to be transmitted in non-broadband state. In the feature, a signal frequency is divided by a time section, and any signal frequency selected in this way is within the requested low frequency width range and is linearly independent. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a kind of signal transmission method and apparatus, and more particularly, to a non-broadband signal transmission method and apparatus through a power line based on a mixing and separation technique of various signals.

  Coupling a carrier wave signal on a power transmission line to perform signal transmission for communication between devices has been applied to an existing home appliance control system. However, the inherent high noise of the power transmission line and the problem that the signal is likely to attenuate will affect the communication quality, so how to exempt the interference problem between signals when transmitting many kinds of signals, and when transmitting a large amount of signals How to increase the amount of signal transmission and the transmission speed is a problem to be overcome in the technology of signal transmission through the power transmission line.

According to the prior art, Patent Document 1 discloses a power line carrier wave communication device (power line).
carrier communication device), which combines or fits a high speed modem with a base unit of a power line carrier device, and is used to mitigate the decrease in data transmission rate when the signal is attenuated. The power line carrier communication device operates in combination with a power line carrier extension unit, and when the power line carrier expansion unit performs data transmission with a user's electronic equipment, Information is received and transmitted through the power line and the AC power line. However, it is highly complex to transmit multiple types of signals simultaneously in power line carrier wave communication, and signal transmission through the power line unless there is sufficient basis for mixing and separating multiple types of signals. The method and apparatus cannot be implemented.

  According to a preferred embodiment of the present invention, a non-broadband signal transmission method and apparatus through a power line is based on the technology described in Patent Document 2 or Patent Document 3.

World Patent No. 99/48218 Taiwan Patent No. 117048 Specification US Pat. No. 6,442,224

  An object of the present invention is to provide a method capable of simultaneously transmitting many kinds of signals in a non-broadband situation through a power line.

  Another object of the present invention is to provide an apparatus capable of simultaneously transmitting various types of signals in a non-broadband situation through a power line.

  Another object of the present invention is to provide a method of simultaneously transmitting many kinds of signals through a power line that can increase the signal transmission speed and prevent congestion.

  Another object of the present invention is to provide an apparatus for simultaneously transmitting various types of signals through a power line that can increase the signal transmission speed and prevent congestion.

  Another object of the present invention is to provide a signal transmission method that can exempt the signal interference problem.

  Another object of the present invention is to provide a signal transmission apparatus that can exempt the signal interference problem.

  Another object of the present invention is to provide a signal transmission method capable of excluding wiring and saving costs.

  Another object of the present invention is to provide a signal transmission device that can eliminate wiring and save costs.

を構築し、更に全ての変形関数Ｓ_i ⁰ （ｔ）を総加して混合変形信号

を得て、
この混合変形信号ＳＭ（ｔ）を電源線上の特定周波数幅上で伝送し、
受信側にあって、混合変形信号ＳＭ（ｔ）よりｍｘｎ個のサンプルＳ_i （ｔ_j ）（ｉ＝１，２，．．．，ｍ；ｊ＝１，２，．．．，ｎ）を切り取り、且つ各サンプルＳ_i （ｔ_j ）を係数関数_i ａ_j （ｔ）に対応させ、係数関数_i ａ_j （ｔ）は〔Ｔ₀ ，Ｔ₁ 〕中で相互に線形独立の特性を有することから、Ｓ_i （ｔ_j ）を未知数とするｍｘｎ個の独立方程式を構築し、連立方程式を解く方法を利用しｍｘｎ個の独立方程式よりＳ_i （ｔ_j ）を解き、各ソース信号Ｓ_i （ｔ）に還元することを特徴とする、電源線を媒介とする非ブロードバンド信号伝送方法としている。
請求項２の発明は、請求項１記載の電源線を媒介とする非ブロードバンド信号伝送方法において、ソース信号Ｓ_i （ｔ）は文字、音声或いは画像データとされることを特徴とする、電源線を媒介とする非ブロードバンド信号伝送方法としている。
請求項３の発明は、請求項１記載の電源線を媒介とする非ブロードバンド信号伝送方法において、特定周波数幅が４ＫＨｚとされたことを特徴とする、電源線を媒介とする非ブロードバンド信号伝送方法としている。
請求項４の発明は、請求項１記載の電源線を媒介とする非ブロードバンド信号伝送方法を用いて発射側と受信側の間の電源線上でｍ個のソース信号を送受することを特徴とする、電源線を媒介とする非ブロードバンド信号伝送装置としている。
請求項５の発明は、発射側と受信側の間の電源線上でｍ個のソース信号Ｓ_i （ｔ），ｉ＝１，２，．．．，ｍを送受する電源線を媒介とする非ブロードバンド信号伝送装置であり、この装置は、
発射側にあってｍ個のソース信号Ｓ_i （ｔ）を処理して混合変形信号ＳＭ（ｔ）を発生する発射信号処理器と、
該混合変形信号ＳＭ（ｔ）を特定周波数幅で電源線に結合させる発射インタフェース回路と、
非ブロードバンド下で該混合変形信号ＳＭ（ｔ）を伝送する電源線と、
電源線より該特定周波数で該混合変形信号ＳＭ（ｔ）に結合する受信インタフェース回路と、
受信側にあって該混合変形信号ＳＭ（ｔ）をサンプリングして選択的に各ソース信号Ｓ_i （ｔ）に還元する受信信号処理器と、
を具え、そのうち発射信号処理器と受信信号処理器の間の信号伝送は、
電源線からの該混合変形信号ＳＭ（ｔ）に結合し、
該受信側が該混合変形信号ＳＭ（ｔ）をサンプリングして選択的に各ソース信号Ｓ_i （ｔ）に還元し、そのうち発射側と受信側間の信号伝送は、
発射側にあって、ｍ個の〔Ｔ₀ ，Ｔ₁ 〕中のソース信号Ｓ_i （ｔ）（ｔ∈〔Ｔ₀ ，Ｔ₁ 〕；Ｔ₀ ，Ｔ₁ ∈Ｒ；ｔは時間パラメータ）よりｎ個のサンプルＳ_i （ｔ_j ）（ｉ＝１，２，．．．，ｍ；ｊ＝１，２，．．．，ｎ）を切り取り、一つの係数関数集合｛_i ａ_j （ｔ），ｉ＝１，２，．．．，ｍ；ｊ＝１，２，．．．，ｎ｝を選択し、係数関数_i ａ_j （ｔ）を〔Ｔ₀ ，Ｔ₁ 〕中で相互に線形独立となし、Ｓ_i （ｔ）の変形関数

を構築し、更に全ての変形関数Ｓ_i ⁰ （ｔ）を総加して混合変形信号

を得て、
この混合変形信号ＳＭ（ｔ）を電源線上の特定周波数幅上で伝送し、
受信側にあって、混合変形信号ＳＭ（ｔ）よりｍｘｎ個のサンプルＳ_i （ｔ_j ）（ｉ＝１，２，．．．，ｍ；ｊ＝１，２，．．．，ｎ）を切り取り、且つ各サンプルＳ_i （ｔ_j ）を係数関数_i ａ_j （ｔ）に対応させ、係数関数_i ａ_j （ｔ）は〔Ｔ₀ ，Ｔ₁ 〕中で相互に線形独立の特性を有することから、Ｓ_i （ｔ_j ）を未知数とするｍｘｎ個の独立方程式を構築し、連立方程式を解く方法を利用しｍｘｎ個の独立方程式よりＳ_i （ｔ_j ）を解き、各ソース信号Ｓ_i （ｔ）に還元することを特徴とする、電源線を媒介とする非ブロードバンド信号伝送装置としている。
請求項６の発明は、請求項５記載の電源線を媒介とする非ブロードバンド信号伝送装置において、ソース信号Ｓ_i （ｔ）は文字、音声或いは画像データとされることを特徴とする、電源線を媒介とする非ブロードバンド信号伝送装置としている。
請求項７の発明は、請求項５記載の電源線を媒介とする非ブロードバンド信号伝送装置において、発射信号処理器がｍ組の信号変形装置と信号分離装置を具え、それぞれｍ個の音声信号を送受し、及び、該発射信号処理器は信号混合回路を具えてｍ個の変形信号を総加して混合変形信号となすことを特徴とする、電源線を媒介とする非ブロードバンド信号伝送装置としている。
請求項８の発明は、請求項５記載の電源線を媒介とする非ブロードバンド信号伝送装置において、発射信号処理器と発射インタフェース回路が一つに結合されたことを特徴とする、電源線を媒介とする非ブロードバンド信号伝送装置としている。
請求項９の発明は、請求項５記載の電源線を媒介とする非ブロードバンド信号伝送装置において、受信信号処理器がｍ組の信号変形装置と信号分離装置を具え、それぞれｍ個の音声信号を還元し、及び、該受信信号処理器は更にｍ組の信号変形装置と信号分離装置の一つを選択するセレクタと、変形信号を混合して混合変形信号となす信号混合回路を具えたことを特徴とする、電源線を媒介とする非ブロードバンド信号伝送装置としている。
請求項１０の発明は、請求項５記載の電源線を媒介とする非ブロードバンド信号伝送装置において、受信信号処理器と受信インタフェース回路が一つに結合されたことを特徴とする、電源線を媒介とする非ブロードバンド信号伝送装置としている。
請求項１１の発明は、請求項５記載の電源線を媒介とする非ブロードバンド信号伝送装置において、電源線が交流電源伝送線とされたことを特徴とする、電源線を媒介とする非ブロードバンド信号伝送装置としている。
請求項１２の発明は、請求項５記載の電源線を媒介とする非ブロードバンド信号伝送装置において、特定周波数幅が４ＫＨｚとされたことを特徴とする、電源線を媒介とする非ブロードバンド信号伝送装置としている。 According to the first aspect of the present invention, m source signals S _i (t), i = 1, 2,. . . , M is a non-broadband signal transmission method using a power line for transmitting and receiving,
On the launch side, m source signals S _i (t) are processed to generate a mixed deformation signal SM (t),
The mixed deformation signal SM (t) is transmitted by being coupled to the power line with a specific frequency width,
Coupled to the mixed deformation signal SM (t) from the power line;
The receiving side samples the mixed deformation signal SM (t) and selectively reduces it to each source signal S _i (t), of which signal transmission between the emitting side and the receiving side is:
In the firing side, m number of [T _0, T _1] source signal S _i in (t) from (t∈ [T _0, T _1]; t is a time parameter; T _0, T ₁ ∈R) N samples S _i (t _j ) (i = 1, 2,..., m; j = 1, 2,..., n) are cut out and one coefficient function set { _i a _j (t) , I = 1, 2,. . . , M; j = 1, 2,. . . , N}, the coefficient function _i a _j (t) is linearly independent in [T ₀ , T ₁ ], and the transformation function of S _i (t)

And all the deformation functions S _i ⁰ (t) are added together to produce a mixed deformation signal

Get
This mixed deformation signal SM (t) is transmitted over a specific frequency width on the power line,
On the receiving side, mxn samples S _i (t _j ) (i = 1, 2,..., M; j = 1, 2,..., N) are obtained from the mixed deformation signal SM (t). Cut and associate each sample S _i (t _j ) with the coefficient function _i a _j (t), and the coefficient function _i a _j (t) has linearly independent characteristics in [T ₀ , T ₁ ]. Therefore, mxn independent equations having S _i (t _j ) as unknowns are constructed, S _i (t _j ) is solved from mxn independent equations using a method of solving simultaneous equations, and each source signal S _i A non-broadband signal transmission method using a power line as a medium, which is reduced to (t).
According to a second aspect of the present invention, in the non-broadband signal transmission method using the power source line as a medium according to the first aspect, the source signal S _i (t) is a character, sound or image data. It is a non-broadband signal transmission method that mediates.
According to a third aspect of the present invention, there is provided a non-broadband signal transmission method using a power line as defined in claim 1, wherein the specific frequency width is 4 KHz. It is said.
The invention of claim 4 is characterized in that m source signals are transmitted and received on the power supply line between the emitting side and the receiving side using the non-broadband signal transmission method mediated by the power supply line of claim 1. , A non-broadband signal transmission device through a power line.
The invention of claim 5 is characterized in that m source signals S _i (t), i = 1, 2,. . . , M is a non-broadband signal transmission device via a power line that transmits and receives,
A firing signal processor on the firing side for processing the m source signals S _i (t) to generate a mixed deformation signal SM (t);
A launch interface circuit for coupling the mixed deformation signal SM (t) to a power line with a specific frequency width;
A power line for transmitting the mixed deformation signal SM (t) under non-broadband,
A reception interface circuit coupled to the mixed deformation signal SM (t) at a specific frequency from a power line;
A received signal processor on the receiving side for sampling the mixed deformation signal SM (t) and selectively reducing it to each source signal S _i (t);
Of which signal transmission between the launch signal processor and the receive signal processor is
Coupled to the mixed deformation signal SM (t) from the power line;
The receiving side samples the mixed deformation signal SM (t) and selectively reduces it to each source signal S _i (t), of which signal transmission between the emitting side and the receiving side is:
In the firing side, m number of [T _0, T _1] source signal S _i in (t) from (t∈ [T _0, T _1]; t is a time parameter; T _0, T ₁ ∈R) N samples S _i (t _j ) (i = 1, 2,..., m; j = 1, 2,..., n) are cut out and one coefficient function set { _i a _j (t) , I = 1, 2,. . . , M; j = 1, 2,. . . , N}, and the coefficient function _i a _j (t) is mutually linearly independent in [T ₀ , T ₁ ], and the deformation function of S _i (t)

And all the deformation functions S _i ⁰ (t) are added together to produce a mixed deformation signal

Get
This mixed deformation signal SM (t) is transmitted over a specific frequency width on the power line,
On the receiving side, mxn samples S _i (t _j ) (i = 1, 2,..., M; j = 1, 2,..., N) are obtained from the mixed deformation signal SM (t). Cut and associate each sample S _i (t _j ) with the coefficient function _i a _j (t), and the coefficient function _i a _j (t) has linearly independent characteristics in [T ₀ , T ₁ ]. Therefore, mxn independent equations having S _i (t _j ) as unknowns are constructed, S _i (t _j ) is solved from mxn independent equations using a method of solving simultaneous equations, and each source signal S _i A non-broadband signal transmission device using a power line as a medium, which is reduced to (t).
According to a sixth aspect of the present invention, in the non-broadband signal transmission device using the power source line according to the fifth aspect, the source signal S _i (t) is a character, sound or image data. It is a non-broadband signal transmission device that mediates.
A seventh aspect of the present invention is the non-broadband signal transmission device using the power line as described in the fifth aspect, wherein the launch signal processor includes m sets of signal transformation devices and signal separation devices, each of which has m audio signals. As a non-broadband signal transmission device mediated by a power line, the emission signal processor includes a signal mixing circuit and adds m number of deformation signals to form a mixed deformation signal. Yes.
The invention of claim 8 is the non-broadband signal transmission device using the power line as described in claim 5, wherein the launch signal processor and the launch interface circuit are combined into one. And a non-broadband signal transmission device.
A ninth aspect of the present invention is the non-broadband signal transmission apparatus using the power line as described in the fifth aspect, wherein the reception signal processor includes m sets of signal transformation devices and signal separation devices, each of which has m audio signals. In addition, the received signal processor further comprises a selector for selecting one of m sets of signal transformation devices and signal separation devices, and a signal mixing circuit for mixing the transformation signals into a mixed transformation signal. The feature is a non-broadband signal transmission device using a power line as a medium.
According to a tenth aspect of the present invention, in the non-broadband signal transmission apparatus using the power line as a medium according to the fifth aspect, the reception signal processor and the reception interface circuit are combined into one. And a non-broadband signal transmission device.
The invention of claim 11 is the non-broadband signal transmission device using the power line as claimed in claim 5, wherein the power line is an AC power transmission line. It is a transmission device.
The invention of claim 12 is the non-broadband signal transmission device using the power line according to claim 5, wherein the specific frequency width is 4 KHz. It is said.

  According to a preferred embodiment of the present invention, a non-broadband signal transmission method and apparatus using a power line is based on the technology described in the above-mentioned Patent Document 2 or Patent Document 3 and is based on many kinds (infinitely many kinds). Signal) (voice, image, data, etc.) is frequency-divided and mixed by a mathematical method of linear algebra to form a mixed deformation signal, and then the mixed deformation signal is transmitted to a general power source in a non-broadband situation. The data is transmitted by being coupled to a line (for example, an AC power line) or an arbitrary transmission medium. Its feature is to divide the signal frequency in the time section so that all selected signal frequencies are in the required low frequency width range and exhibit linear independence, thereby simultaneously reducing the total mixed signal of low frequency width. At the time of transmission, transmission is performed through a general channel, and the transmission rate is increased without increasing the amount of signal transmission so that the problem of network congestion can be exempted.

  In addition, since the frequency width is small, the problem of interference between signals can be exempted when a large amount of signals are transmitted through a single channel on a general power line. Although the power line originally has the problem of high noise and signal attenuation, the present invention uses a carrier system to carry a single low frequency width hybrid deformed signal, and finally the carrier with a filter. The problem is solved by extracting and separating and reducing these various signals. As a result, the method and apparatus of the present invention can transmit various signals through the power line, and has industrial applicability, novelty and inventive step.

  According to an embodiment of the present invention, a non-broadband signal transmission device using a power line as a medium is capable of transmitting and receiving a plurality of source signals on a power line between a emitting side and a receiving side based on a mixing and separating technique of various signals. These source signals can be audio signals, image signals, data signals such as character data, etc., and are mixed and processed into a low frequency width mixed deformation signal. They are coupled to a line (eg, AC power line) or any transmission medium and transmitted simultaneously.

  The firing side includes a firing signal processor and an interface circuit, and the firing signal processor is coupled to a power line through the interface circuit, so that the mixed deformation signal of the firing signal processor has a low frequency width. Combined with the line. The firing signal processor transmits and receives a plurality of source signals and processes each source signal for sending and receiving using a signal transformation device and a signal separation device, respectively. The total mixture is added by the coefficient function of, so that a mixed deformation signal with a low frequency width is obtained.

  Each reception side includes a reception signal processor and an interface circuit, and the reception signal processor is coupled to a power line through the reception side interface circuit, and the reception signal processor is mixed with a low frequency width from the power line. Coupled to the deformation signal. The received signal processor comprises a plurality of sets of signal transformation devices, signal separation devices and one selector. The received signal processor is coupled to the mixed deformed signal on the power line, and further selects one of the signal deforming device and the signal separating device by a selector to receive a corresponding one from a plurality of source signals, and selects the selected signal deforming device. And the signal separator constructs an independent equation with a coefficient function of linearly independent characteristics, solves simultaneous equations with many kinds of deformed signals as unknowns, thereby reducing them to the corresponding source signals, thereby both on the sending side and the receiving side Send and receive signals. As will be further described below, the mixing method and the separation method of the various kinds of source signals between the emission signal processor and the reception signal processor are based on the technique described in Patent Document 2 or Patent Document 3.

を構築し、更に全ての変形関数Ｓ_i ⁰ （ｔ）を総加して

を得る。こうして、ＳＭ（ｔ）を混合後の特定周波数幅の混合変形信号とすることができる。 The signal mixing method performed by the signal transformation device includes the following.
First m (m is a positive integer) number of [T _0, T _1] source signal S _i in (t) (t∈ [T _0, T _{1]; T 0, T 1 ∈R;} t is a time parameter ) Cut out n samples S _i (t _j ) (i = 1, 2,..., M; j = 1, 2,..., N).
Next, one coefficient function set { _i a _j (t), i = 1, 2,. . . , M; j = 1, 2,. . . , N} and the coefficient function _i a _j (t) is linearly independent in [T ₀ , T ₁ ].
Finally, the transformation function of S _i (t)

And add all the transformation functions S _i ⁰ (t) together

Get. Thus, SM (t) can be a mixed deformation signal having a specific frequency width after mixing.

The signal separation method performed by the signal separation device includes the following.
Cut out mxn samples S _i (t _j ) (i = 1, 2,..., M; j = 1, 2,..., N) from the modified mixed signal SM (t) Let S _i (t _j ) correspond to the coefficient function _i a _j (t).
Since the coefficient functions _i a _j (t) form linearly independent characteristics in [T ₀ , T ₁ ], mxn independent equations having S _i (t _j ) as unknowns are constructed.
Using a method of solving simultaneous equations, S _i (t _j ) is solved from mxn independent equations and reduced to each source signal S _i (t).

を構築し、更に全ての変形関数Ｓ_i ⁰ （ｔ）を総加して混合変形信号

を得る。
この混合変形信号ＳＭ（ｔ）は電源線上の特定周波数幅上で伝送される。
受信側では、混合変形信号ＳＭ（ｔ）よりｍｘｎ個のサンプルＳ_i （ｔ_j ）（ｉ＝１，２，．．．，ｍ；ｊ＝１，２，．．．，ｎ）を切り取り、且つ各サンプルＳ_i （ｔ_j ）を係数関数_i ａ_j （ｔ）に対応させ、係数関数_i ａ_j （ｔ）は〔Ｔ₀ ，Ｔ₁ 〕中で相互に線形独立の特性を有することから、Ｓ_i （ｔ_j ）を未知数とするｍｘｎ個の独立方程式を構築し、連立方程式を解く方法を利用しｍｘｎ個の独立方程式よりＳ_i （ｔ_j ）を解き、各ソース信号Ｓ_i （ｔ）に還元する。 The non-broadband signal transmission device using the power supply line of the present invention provides m source signals S _i (t) on the power supply line between the emitting side and the receiving side using the non-broadband signal transmission method using the power supply line. , I = 1, 2,. . . , M, and this method is
Process m source signals S _i (t) on the launch side to generate mixed deformation signal SM (t),
The mixed deformation signal SM (t) is transmitted by being coupled to the power line with a specific frequency width,
Coupled to the mixed deformation signal SM (t) from the power line;
The receiving side samples the mixed deformation signal SM (t) and selectively reduces it to each source signal S _i (t). Among them, the characteristics of signal transmission between the emitting side and the receiving side include the following.
In the firing side, m number of [T _0, T _1] source signal S _i in (t) from (t∈ [T _0, T _1]; t is a time parameter; T _0, T ₁ ∈R) N samples S _i (t _j ) (i = 1, 2,..., m; j = 1, 2,..., n) are cut out and one coefficient function set { _i a _j (t) , I = 1, 2,. . . , M; j = 1, 2,. . . , N}, the coefficient function _i a _j (t) is linearly independent in [T ₀ , T ₁ ], and the transformation function of S _i (t)

And all the deformation functions S _i ⁰ (t) are added together to produce a mixed deformation signal

Get.
This mixed deformation signal SM (t) is transmitted over a specific frequency width on the power supply line.
On the receiving side, mxn samples S _i (t _j ) (i = 1, 2,..., M; j = 1, 2,..., N) are cut out from the mixed deformation signal SM (t), and corresponding to each sample S _i (t _j) the coefficient function _i a _j (t), the coefficient function _i a _j (t) is because they have a linearly independent characteristics from each other in [T _0, T _1] , S _i (t _j ) are unknowns, mxn independent equations are constructed, and S _i (t _j ) is solved from mxn independent equations using a method of solving simultaneous equations, and each source signal S _i (t ).

  FIG. 1 is a structural diagram of audio signal transmission according to an embodiment of the present invention. In this embodiment, the non-broadband signal transmission apparatus using the power line of the present invention transmits and receives a plurality of audio signals on the power line between the emitting side and the plurality of receiving sides based on the above-described mixing and separating technique of various signals. In addition, the signal transmission between the emitting side and the receiving side is mixed to form a low frequency width mixed deformation signal, and the mixed deformation signal is transmitted from the interface circuit with a specific low frequency width to a general power transmission line (for example, AC Power line) or an arbitrary transmission medium for transmission, and the specific frequency width is preferably 4 KHz.

  In this embodiment, the emitting side has a signal mixing and separating device, and sends and receives m audio signals, and also has an interface circuit to send the mixed signal and the mixed deformation signal processed by the separating device with a specific low frequency width. The signal mixing / separation device processes m audio signals based on the above-described multi-signal mixing / separation technique. The receiving side is equipped with a signal mixing / separating device and selectively transmits / receives one of the m audio signals, and also transmits / receives one of the m audio signals selected by the signal mixing / separating device. And an interface circuit that couples the mixed and deformed signal processed by the signal mixing and separation device to a power line with a specific low frequency width, and the signal mixing and separation device is suitable for the above-mentioned various signal mixing and separation techniques. Based on this, one of the m selected audio signals is processed.

  FIG. 2 is a block diagram of a launch-side signal mixing and separating apparatus according to an embodiment of the present invention. The firing side signal mixing and separating device includes m signal transformation devices and signal separation devices to send and receive m audio signals, and the firing side signal mixing and separation device comprises a signal mixing circuit and m transformation signals. Are added together to make a mixed deformation signal. The launch side signal mixing and separating device uses the integrator, differentiator, multiplier, adder / subtractor, A / D converter, D / A converter, operational amplifier and buffer, etc. to implement the above-mentioned various signal mixing and separation techniques. To do.

  FIG. 3 is a block diagram of a receiving-side signal mixing and separating apparatus according to an embodiment of the present invention. The reception-side signal mixing and separation device includes m sets of signal transformation devices and signal separation devices, and performs a reduction process on m audio signals. The receiving side signal mixing and separating device further comprises a selector, which selects one of m sets of signal transformation devices and signal separating devices, and transmits the selected audio signal to the telephone slave unit through the telephone circuit and the radio circuit. To do. The receiving-side signal mixing and separating device further includes a signal mixing circuit, which mixes the modified signals into a mixed modified signal. The receiving side signal mixing and separating device uses the integrator, differentiator, multiplier, adder / subtractor, A / D converter, D / A converter, operational amplifier and buffer, etc. to implement the above-mentioned mixing and separation techniques for various signals. To do.

  The above embodiments do not limit the scope of the present invention, and any modification or alteration in detail that can be made based on the present invention shall fall within the scope of the claims of the present invention.

It is a structural diagram of the audio signal transmission of the embodiment of the present invention. FIG. 3 is a block diagram of a launch-side signal mixing and separating apparatus according to an embodiment of the present invention. It is a block diagram of the receiving side signal mixing and separating apparatus of the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Launching side signal mixing and separation device 12 Launching side interface circuit 13 Reception side signal mixing and separation device 14 Reception side interface circuit 15 Telephone cordless handset 16 Power line 17 Signal transformation device 18 Signal separation device 19 Signal mixing circuit 20 Selector 21 Telephone circuit 22 Radio circuit

Claims (12)

M source signals S _i (t), i = 1, 2,... On the power line between the emitting side and the receiving side. . . , M is a non-broadband signal transmission method using a power line for transmitting and receiving,
On the launch side, m source signals S _i (t) are processed to generate a mixed deformation signal SM (t),
The mixed deformation signal SM (t) is transmitted by being coupled to the power line with a specific frequency width,
Coupled to the mixed deformation signal SM (t) from the power line;
The receiving side samples the mixed deformation signal SM (t) and selectively reduces it to each source signal S _i (t), of which signal transmission between the emitting side and the receiving side is:
In the firing side, m number of [T _0, T _1] source signal S _i in (t) from (t∈ [T _0, T _1]; t is a time parameter; T _0, T ₁ ∈R) N samples S _i (t _j ) (i = 1, 2,..., m; j = 1, 2,..., n) are cut out and one coefficient function set { _i a _j (t) , I = 1, 2,. . . , M; j = 1, 2,. . . , N}, the coefficient function _i a _j (t) is linearly independent in [T ₀ , T ₁ ], and the transformation function of S _i (t)

And all the deformation functions S _i ⁰ (t) are added together to produce a mixed deformation signal

Get
This mixed deformation signal SM (t) is transmitted over a specific frequency width on the power line,
On the receiving side, mxn samples S _i (t _j ) (i = 1, 2,..., M; j = 1, 2,..., N) are obtained from the mixed deformation signal SM (t). Cut and associate each sample S _i (t _j ) with the coefficient function _i a _j (t), and the coefficient function _i a _j (t) has linearly independent characteristics in [T ₀ , T ₁ ]. Therefore, mxn independent equations having S _i (t _j ) as unknowns are constructed, S _i (t _j ) is solved from mxn independent equations using a method of solving simultaneous equations, and each source signal S _i A non-broadband signal transmission method using a power line as a medium, which is reduced to (t). The non-broadband signal transmission method using a power line as a medium according to claim 1, wherein the source signal S _i (t) is a character, sound or image data. Transmission method.   2. The non-broadband signal transmission method using a power line as a medium according to claim 1, wherein the specific frequency width is 4 KHz.   The m-source signal is transmitted / received on the power line between the emitting side and the receiving side using the non-broadband signal transmission method mediated by the power line according to claim 1. Non-broadband signal transmission device. M source signals S _i (t), i = 1, 2,... On the power line between the emitting side and the receiving side. . . , M is a non-broadband signal transmission device via a power line that transmits and receives,
A firing signal processor on the firing side for processing the m source signals S _i (t) to generate a mixed deformation signal SM (t);
A launch interface circuit for coupling the mixed deformation signal SM (t) to a power line with a specific frequency width;
A power line for transmitting the mixed deformation signal SM (t) under non-broadband,
A reception interface circuit coupled to the mixed deformation signal SM (t) at a specific frequency from a power line;
A received signal processor on the receiving side for sampling the mixed deformation signal SM (t) and selectively reducing it to each source signal S _i (t);
Of which signal transmission between the launch signal processor and the receive signal processor is
Coupled to the mixed deformation signal SM (t) from the power line;
The receiving side samples the mixed deformation signal SM (t) and selectively reduces it to each source signal S _i (t), of which signal transmission between the emitting side and the receiving side is:
In the firing side, m number of [T _0, T _1] source signal S _i in (t) from (t∈ [T _0, T _1]; t is a time parameter; T _0, T ₁ ∈R) N samples S _i (t _j ) (i = 1, 2,..., m; j = 1, 2,..., n) are cut out and one coefficient function set { _i a _j (t) , I = 1, 2,. . . , M; j = 1, 2,. . . , N}, and the coefficient function _i a _j (t) is mutually linearly independent in [T ₀ , T ₁ ], and the deformation function of S _i (t)

And all the deformation functions S _i ⁰ (t) are added together to produce a mixed deformation signal

Get
This mixed deformation signal SM (t) is transmitted over a specific frequency width on the power line,
On the receiving side, mxn samples S _i (t _j ) (i = 1, 2,..., M; j = 1, 2,..., N) are obtained from the mixed deformation signal SM (t). Cut and associate each sample S _i (t _j ) with the coefficient function _i a _j (t), and the coefficient function _i a _j (t) has linearly independent characteristics in [T ₀ , T ₁ ]. Therefore, mxn independent equations having S _i (t _j ) as unknowns are constructed, S _i (t _j ) is solved from mxn independent equations using a method of solving simultaneous equations, and each source signal S _i A non-broadband signal transmission apparatus using a power line as a medium, which is reduced to (t). 6. The non-broadband signal transmission device using a power line as a medium according to claim 5, wherein the source signal S _i (t) is a character, sound or image data. Transmission equipment.   6. The non-broadband signal transmission device using a power line as claimed in claim 5, wherein the launch signal processor comprises m sets of signal transformation devices and signal separation devices, each of which sends and receives m audio signals, and the launch A non-broadband signal transmission apparatus using a power line as a signal processor, wherein the signal processor includes a signal mixing circuit and adds m modified signals to form a mixed modified signal.   6. The non-broadband signal transmission apparatus using a power line as a medium according to claim 5, wherein the emission signal processor and the emission interface circuit are combined into one. .   6. The non-broadband signal transmission device using a power line as a medium according to claim 5, wherein the reception signal processor includes m sets of signal transformation devices and signal separation devices, respectively, which reduce m audio signals and receive the signals. The signal processor further comprises a selector for selecting one of the m sets of signal transformation devices and signal separation devices, and a signal mixing circuit for mixing the transformation signals into a mixed transformation signal. Non-broadband signal transmission device as a mediator.   6. The non-broadband signal transmission apparatus using a power line as claimed in claim 5, wherein the reception signal processor and the reception interface circuit are combined into one. .   6. The non-broadband signal transmission apparatus using a power line as a medium according to claim 5, wherein the power line is an AC power transmission line. 6. The non-broadband signal transmission apparatus using a power line as a medium according to claim 5, wherein the specific frequency width is 4 KHz.

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