經濟部智慧財產局員工消費合作社印製 484278 A7 __B7__ 五、發明說明（’） ' 本發明係關於一種經由加長絞線對電話線網路之資料 通訊。 先前已有系統被設計供建築物之內經由主動式電話線 的資料通訊，例如在國際專利申請US98/11197被說明的”經 由一般絞線對電話線之資料高語音分配的技術"。該專利說 明一種系統，其中裝置依據以太信號標準使用一種衝突檢 測/衝突迴避隨機存取方法經由主動式電話線而通訊。 另一種經由主動式電話線上之資料信號方法是，數位 用戶迴路（DSL)標準揭示經由主動式電話區域性迴路於電話 交換機和住宅之間的資料通訊方法。於DSL上，在兩組DSL 數據機之間的點對點通訊使用一些信號方法之一種，包含 正交振幅調變（QAM)，和無載波振幅/相位調變（CAP)。 於一論點中，一般而言，本發明是一種媒體轉換器。 該媒體轉換器具有一組第一界面，其用以接收第一資料信 號並且發射第二資料信號。一組編碼器，其被耦合至該第 一界面而用以從該第一資料信號產生於一資料頻帶中之一 組第一減低頻帶寬度信號。該被減低頻帶寬度信號的頻帶 寬度是較小於該第一資料信號的頻帶寬度。一組解碼器， 其被耦合至該界面而用以接收在該資料頻帶中之一組第二 減低頻帶寬度信號並且從該第二減低頻帶寬度信號產生該 第二資料信號。一組第二界面，其被耦合至該編碼器及該 解碼器，而用於以資料頻帶之內的頻率傳輸該第一減低頻 帶寬度信號至以及接收該第二減低頻帶宽度信號自一組絞 線對電話網路。該資料頻帶是比被使用在絞線對網路上聲 4 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） .----1---;---I — — — — — — — ^* — 1 —---I (請先閱讀背面之注意事項再填寫本頁) 484278Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 484278 A7 __B7__ V. Description of the Invention (') The present invention relates to a type of data communication through a telephone line network via an extended twisted pair. Previously systems have been designed for data communication within buildings via active telephone lines, such as the "High-voice distribution technology for data on telephone lines via general twisted wires" described in the international patent application US98 / 11197. The patent describes a system in which a device communicates via an active telephone line using a collision detection / collision avoidance random access method based on the Ethernet signal standard. Another method of data signalling via an active telephone line is the Digital Subscriber Loop (DSL) standard Reveal the data communication method between the telephone exchange and the house via the active telephone regional loop. On DSL, point-to-point communication between two sets of DSL modems uses one of several signal methods, including quadrature amplitude modulation (QAM ), And carrierless amplitude / phase modulation (CAP). In an argument, the present invention is generally a media converter. The media converter has a first interface for receiving a first data signal and A second data signal is transmitted. A set of encoders is coupled to the first interface for receiving data from the first data signal. The signal is generated from a group of first reduced bandwidth signals in a data band. The bandwidth of the reduced bandwidth signal is smaller than the bandwidth of the first data signal. A set of decoders is coupled to the interface And for receiving a set of second reduced-bandwidth signals in the data band and generating the second data signal from the second reduced-bandwidth signal. A set of second interfaces, which are coupled to the encoder and the decoding For transmitting the first reduced-bandwidth signal to and received the second reduced-bandwidth signal from a set of twisted-pair telephone networks at a frequency within the data band. For the voice on the Internet 4 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) .---- 1 ---; --- I — — — — — — — ^ * — 1 — --- I (Please read the notes on the back before filling this page) 484278
經濟部智慧財產局員工消費合作社印製 五、發明說明（{) — 音傳輸的聲音頻帶具有較高的頻率。一組衝突信號產生 器，其用以當媒體轉換器傳輸該第一減低頻帶寬度信號至 ' —----- 該絞線對網路時產生一組衝突信號。該衝突信號以較高於 聲音頻帶頻率之衝突頻帶內的頻率被傳輸至該絞線對網 路。該媒體轉換器也包含一組衝突信號檢測器，其用以檢 測指示被連接到該絞線對網路之一組裝置正在該資料頻帶 之內傳輸信號的該絞線對網路上該衝突頻帶內的信號。 該媒體轉換器可包含一個或者更多下面的特點： 一組信號產生器，其被耦合至該衝突信號檢測器以及 至該第一界面而用以產生指示一組其他裝置正在傳輸之信 號並且經由該第一界面傳輸該被產生的信號。 該第一資料信號以及該第二資料信號是一種以太信 號。 該第一資料信號和該第二資料之資料率是10Mb/s或者 較大，並且該資料頻帶之頻帶寬度是2.5MHz或者較小。 該第一資料信號和該第二資料信號之資料率是lOOMb/s 或較大並且資料頻帶之頻帶寬度是12MHz或較小^ 該編碼器包含用以調變該第一資料信號之一組正交振 幅調變器並且該解碼器包含用以解調變該第二減低頻帶寬 度信號之一組正交振幅解調變器。 該解碼器進一步地包含被耦合至該正交振幅解調變器 而在解調變之前在該第二減低頻帶寬度信號上進行頻譜等 化的一組信號前處理器· 於另一組論點中，一般而言，本發明是有關一種經由 5 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -------------^ i — — — — — — ^il —--I I (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 484278 A7 ___JB7_ 五、發明說明（3 ) — 主動式電話線網路上傳送資料的方法。該方法包含經由一 組第一界面接收一組第一資料信號並且發射一組第二資料 信號，從該第一資料信號產生在資料頻帶中之一組第一減 低頻帶寬度信號，接收在資料頻帶中之一組第二減低頻帶 寬度信號並且從該第二減低頻帶寬度信號產生該第二信 號，並且以資料頻帶內之頻率發射該第一減低頻帶寬度信 號至並且接收該第二減低頻帶寬度信號自一組絞線對網 路。該方法也包含當媒體轉換器傳輸該第一減低頻帶寬度 信號至該絞線對網路時產生一組衝突信號，該衝突信號以 較高於聲音頻帶頻率之衝突頻帶內的頻率被傳輸至該絞線 對網路，並且檢測指示被連接到該絞線對網路之一組裝置 正在該資料頻帶之內傳輸信號的該絞線對網路上該衝突頻 帶內的信號。 本發明具有一種允許在擴展範圍經由主動式電話網路 之高速率資料通訊的優點。利用壓縮資料信號之頻帶寬 度，例如10Mb/s或者lOOMb/s之以太信號，一組較低之頻率 範圍可以被使用爲該資料頻帶。這些較低的頻率比較高的 頻率遭受較少的衰減，因而增加在接收器上之信號雜訊 比。相同之頻率範圍以一種隨機存取方法被使用於所有的 通訊上，因而與不同的通訊方向使用不重叠頻率範圍之方 法比較，其使用一種減小的頻帶寬度。使用不同的頻率於 衝突信號上可改進其他媒體轉換器的傅輸檢測•使用高於 聲音頻帶但在相對地低頻率之衝突檢測頻帶•可進一步地 改進網路上之衝突檢測。 6 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐) • ; ^-------------------- (請先閱讀背面之注意事項再填寫本頁) A7Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the Invention ({) — The sound transmission sound band has a higher frequency. A set of conflict signal generators is used to generate a set of conflict signals when the media converter transmits the first reduced-bandwidth signal to the '------- the twisted pair network. The collision signal is transmitted to the twisted pair network at a frequency in a collision band higher than the frequency of the sound band. The media converter also includes a set of collision signal detectors for detecting that a group of devices connected to the twisted pair network is transmitting signals within the data band within the conflicted frequency band on the twisted pair network. signal of. The media converter may include one or more of the following features: a set of signal generators coupled to the collision signal detector and to the first interface to generate signals indicating that a set of other devices are transmitting and via The first interface transmits the generated signal. The first data signal and the second data signal are an Ethernet signal. The data rate of the first data signal and the second data is 10 Mb / s or more, and the bandwidth of the data frequency band is 2.5 MHz or less. The data rate of the first data signal and the second data signal is 10OMb / s or greater and the data band bandwidth is 12MHz or less ^ The encoder includes a set of positive and negative signals for modulating the first data signal The cross amplitude modulator and the decoder include a set of quadrature amplitude demodulator for demodulating the second reduced bandwidth signal. The decoder further includes a set of signal preprocessors coupled to the quadrature amplitude demodulator to perform spectrum equalization on the second reduced bandwidth signal before demodulation. In another set of arguments In general, the present invention is related to a paper size applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) via 5 paper sizes ------------- ^ i — — — — — — ^ Il —-- II (Please read the notes on the back before filling out this page) Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 484278 A7 ___JB7_ V. Description of Invention (3) — Active telephone line data transmission Methods. The method includes receiving a set of first data signals and transmitting a set of second data signals through a set of first interfaces, and generating a set of first reduced-bandwidth signals in the data band from the first data signal, and receiving in the data band One of the second set of reduced bandwidth signals and generates the second signal from the second reduced bandwidth signal, and transmits the first reduced bandwidth signal to and receives the second reduced bandwidth signal at a frequency within a data band From a set of twisted pair networks. The method also includes generating a set of collision signals when the media converter transmits the first reduced-bandwidth signal to the twisted-pair network, and the collision signals are transmitted to the frequency in a collision frequency band higher than a sound frequency band frequency. The twisted pair network detects signals in the conflicting frequency band on the twisted pair network indicating that a group of devices connected to the twisted pair network are transmitting signals within the data frequency band. The invention has the advantage of allowing high-speed data communication over an extended range via an active telephone network. Using the frequency bandwidth of the compressed data signal, such as 10Mb / s or 10OMb / s Ethernet signal, a lower frequency range can be used as the data band. These lower frequencies suffer less attenuation than higher frequencies, thereby increasing the signal-to-noise ratio at the receiver. The same frequency range is used for all communications with a random access method, so it uses a reduced bandwidth compared to a method that uses non-overlapping frequency ranges for different communication directions. Using different frequencies on conflict signals can improve the detection of other media converters. • Use conflict detection bands that are higher than the sound band but at relatively low frequencies. • It can further improve conflict detection on the network. 6 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) •; ^ -------------------- (Please read the note on the back first (Fill in this page again) A7
經濟部智慧財產局員工消費合作社印製Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs
五、發明說明（斗） 第1圖展示多組電腦經由媒體轉換器被耦合至絞線對電 話網路上之系統； 第2圖展示在比電話聲音頻帶較高頻率之衝突頻帶以及 資料頻帶的圖形； 第3圖是一種媒體轉換器的方塊圖； 第4圖是一種媒體轉換器之解碼器的方塊圖；以及 第5圖是一種媒體轉換器之編碼器的方塊圖。 參看至第1圖，一些電腦120經由主動式絞線對電話網 路150彼此通訊。如第1圖之展示，絞線對網路150攜帶在電 話140和電話交換機170之間的聲音信號。各電腦120經由媒 體轉換器110被耦合至絞線對網路丨50。絞線對網路丨50具有 兩組導體，聲音和資料信號被傳輸於其上。在這實施例 中，電腦120使用一種lOMb/s以太標準，10組基本-T，而與 他們所對應的媒體轉換器110通訊，其中之資料鏈路122包 含兩對導體，各對用於各方向通訊。在第二實施例中，電 腦和媒體轉換器使用一組100Mb/S以太標準，100組基本-T，而通訊。電話140經由低通濾波器130被耦合至絞線對網 路150。低通濾波器130通過在電話聲音頻帶中之信號並且 在較高頻率呈現一種高阻抗於絞線對網路上。終端器160被 耦合至絞線對網路150之端點以減低在高頻率之反射。 參看至第2圖，媒體轉換器ΙίΟ使用另一組與信號頻帶 寬度比較之下相對小的頻帶寬度而通訊，該信號在媒體轉 換器以及被耦合至媒髏轉換器的電腦120之間被傅送•媒β 轉換器no於資料頻帶230內彼此傳送資料。各媒體轉換器 7 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） — — — — — — — — — — — — — ·1111111 ·1111111· (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 484278 A7 B7__ 五、發明說明（5 ) " 傳輸相同頻率範圍之資料。當傳輸資料頻帶23 0中之資料 時，媒體轉換器Π0也傳輸在衝突頻帶22 0之內的一組衝突 信號音220。各媒體轉換器被指定一種不同的頻率用以傳輸 其衝突信號音。接收媒體轉換器11〇檢測在衝突頻帶220內 除了其自己頻率之外的衝突信號音以便檢測衝突。以此方 式，媒體轉換器不必同時地在資料頻帶230中傳輸以及檢測 在資料頻帶中其他媒體轉換器的傳輸。衝突頻帶220和資料 頻帶230是在不同的頻率範圍，其兩者皆在高於前述電話聲 音頻帶2.10之頻率，並不延伸而超越5kHz。 參看至第3圖，媒體轉換器110具有一發射部份以及一 接收部份，他們各經由接合處310而被耦合至絞線對網路 150上。在接收部份，來自一組向內的接線組對122b之以太 信號從電腦120傳送信號至媒體轉換器。這些信號傳送至一 組編碼器3 60，該編碼器3 60轉換以太信號成爲用以在資料 頻帶230中傳輸至其他媒體轉換器之一種較窄頻帶寬度的形 式（第2圖）。除了將以太信號編碼成爲資料頻帶之外，當其 在接線122b上接收一組以太信號時，媒體轉換器110也在信 號音產生器3 70中產生一組衝突信號音。所產生的衝突信號 音與被耦合至絞線對網路150在其他媒體轉換器110中信號 音產生器370產生之衝突信號音具有不同的頻率。利用信號 音產生器370產生的衝突信號音以及利用編碼器360被編碼 的資料信號兩者皆經由接合處310而被耦合至絞線對網路 150。 在接收部份，來自絞線對網路之信號從絞線對網路150 8 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) ▼裝·_丨·丨—丨丨訂----— I — * 484278 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（6 ) " 被傳送至一組高通濾波器3 20以及至一組低通濾波器322。 高通濾波器320通過資料頻帶230中之信號（第2圖），而低通 濾波器322通過衝突頻帶220中的信號（第2圖）。 當媒體轉換器Π0不傳輸信號至絞線對網路150上並且 ，其接收資料頻帶230中之資料信號時，該信號穿經過接合處 310以及高通濾波器320而至解碼器330。解碼器3 30轉換被 > 使用在媒體轉換器之間通訊的信號格式成爲一組標準以太 信號。以太信號經由耦合器3 50並且在資料鏈路122向外的 接線組對122a之上被傳送，其耦合媒體轉換器110和電腦 120 〇 當媒體轉換器110傳輸至絞線對網路150上並且接收一 組衝突信號音時，信號音產生器370在信號音檢測器340的 頻率之外的頻率上產生衝突信號音，信號音檢測器340傳送 一組信號至信號產生器342,其接著產生一組信號，該信號 在接線對122a之上經由耦合器3 50被傳送至電腦120。這被 產生之信號是一種電腦120傳譯作爲另一組電腦傅輸的以太 格式信號，並且電腦將因而檢測發生的衝突並停止傳輸。 應注意到，這系統中的衝突信號音和資料信號兩者皆 爲前述之聲音頻帶以上的頻率。來自關於資料的信號之聲 音信號的分離利用通過低通濾波器和通過高通濾波器而被 達成。此類分離以及用以耦合聲音頻帶的信號於絞線對接 線網路支線上之各種配置，在前面敘述之美國專利申請案 號98/11 197中被說明· 參看至第4和5圖，編碼器360和解碼器330在被使用以 9 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ---— — — — — — — —1· ·1111111 ^ ·1111111 (請先閲讀背面之注意事項再填寫本頁) A7 B7 五、發明說明（7 ) ' 在絞線對網路150之上傳輸的較窄頻帶信號和以太信號之間 轉換。於這實施例中，編碼器360和解碼器3 30分別地包含 一組調變器以及一組解調變器，其使用正交振幅調變（Q AM) 在絞線對網路150之上通訊。於這實施例中，10組基本-T以 太被使用，一組QAM-16之方法被使用，其中各被傳輸符號 從一組16點群集中被選擇，產生一種每組被傳輸符號爲4位 元的傳輸。結果，資料頻帶23 0大約爲2.5MHz或者較小以便 攜帶10組基本之以太10Mb/s的位元流。在第二實施例 中，其中100組基本-T之以太被使用，QAM-128被使用，並 且資料頻帶230是大約爲12Mhz寬或更小些。在另外的實施 例中，減低以太信號之頻帶寬度的其他編碼方法被使用。 參看至第4圖，解碼器330包含一串列的功能元件。一 組類比至數位轉換器（A/D)4 10轉換在資料頻帶中被接收的 信號成爲一組數位化取樣波形表示。這數位化表示在等化 器420中數位地被濾波。等化器420補償絞線對網路150上衰 減的頻率。在另外的實施例中，等化器420調適至被接收信 號之特性。等化信號被傳送至QAM解碼器430，其輸出在被 接收信號中被編碼之串列位元流。串列的位元流被以太編 碼器440轉換以傳輸至目的地電腦*在另外的實施例中，這 處理程序之其他的製作，例如在類比領域而不是在數位化 領域中進行一些功能，被使用。同時，另外的元件’例 如，提供錯誤更正或回音消除機構，也可以被包含於編碼 器和解碼器之中· 參看至第5圖，編碼器360實質上進行解碼器330之反向 10 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先Μ讀背面之注意事項典填寫本頁) 裝—-----訂 —---11 . 經濟部智慧財產局員工消費合作社印製 彳糾278 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（g ) 二 的操作。一組以太解碼器510從電腦接收以太信號並且轉換 成爲一組串列位元流。QAM編碼器520轉換位元流成爲位元 流QAM編碼之一組數位化取樣波形表示。這數位化波形在 信號前處理器530中被處理。在這實施例中，信號前處理器 預先加強被編碼信號的較高頻率成份以便緩和較髙頻率成 份之較大衰減。最後，在於絞線對網路上傳輸之前，被處 理的數位波形被傳送經由數位至類比轉換器540。 與其原始以太表示比較之下減低被編碼資料信號之頻 帶寬度並且因而允許以較低的頻率傳輸，資料信號比原始 以太表示在絞線對網路上承受較少的整體衰減。這具有增 加在接收媒體轉換器上之信號雜訊比（SNR)的效應，或另外 地，增加媒體轉換器之傳輸範圍。 爲了允許衝突檢測，如同前述使用衝突信號音222於衝 突頻帶220中的說明，傳輸通道長度受限制因而允許在傳送 媒體轉換器完成傳輸之前在傳送媒體轉換器的衝突檢測。 在這系統中，如同前述的以太標準，被傅輸封裝至少有5 12 位元的長度。在l〇Mb/s中，512位元對應至51.2#s。如果假 設傳輸速率是2x1 08m/s，則此種封裝將被"延伸"至l〇km以 上。在100Mb/S信號被使用之第二實施例中，則該封裝將被 延伸至lkm之上。在10Mb/S之信號情況中，如果在媒體轉換 器之間最大距離是封裝長度的一半，或大約地5km，則如果 第二媒體轉換器剛好在被傳输自第一媒體轉換器的封裝抵 達它之前開始傅輸•則第一媒《轉換器在它結束傅送封裝 之前將檢測第二媒體轉換器的衝突信號音，因而檢測出衝 11 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） — — — —1 — — — — — — — — ·1111111 ·11111111 (請先閱讀背面之注意事項再填寫本頁) A7 B7 iλ發明說明（？） ' 突。相似地，在100Mb/s信號之第二實施例中，在媒體轉換 器之間的最大分離大約是500m。 在另外的實施例中，頻譜中之其他的信號配置被使 用。爲了限制資料頻帶之上方頻率，相同頻帶·被使用以在 半雙工配置之絞線對網路的雙向傳輸。爲了支援強健的衝 突檢測，不同頻率的各媒體轉換器之衝突信號被使用。在 前述被說明的實施例中，衝突頻帶220與資料頻帶23 0的頻 率不同。在另外的實施例中，衝突信號可以在資料頻帶之 內被傳送。例如，如果一組多重音頻信號方法被使用以在 資料頻帶230之內傳輸而不是在QAM上傳輸，則衝突信號音 可利用發出信號音而被散佈。同時，不是信號音之另外的 衝突信號可另外地被使用。例如，對於各媒體轉換器是唯 一的正交窄頻帶信號或展頻信號，可代替衝突信號音以被 使用。 前述說明的發出信號之方法可以被應用在單一建築物 之內，在分設的建築物中，或在電話切換辦公室以及多重 住宅之間。一種中央中樞器可耦合電腦於不同分支的絞線 對網路上，並且受到在電腦之間最大總距離的限制，所有 的電腦可在單一衝突領域之內起作用。 應該了解前述的說明是作爲展示並且不是限制本發明 之範疇，其被所附加之申請專利範圍之範疇所定義*其他 的實施例皆在下面的申請專利範圍之範醻內· 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) · I------ 訂· — ·------線赢 經濟部智慧財產局員工消費合作社印製 -Ί · 484278 A7 B7 五、發明說明（μ ) 元件標號對照表 經濟部智慧財產局員工消費合作社印製 110··· …媒體轉換器 120… …電腦 122… …資料鏈路 122a·· •…接線 122b·· •…接線 130… …低通濾波器 140··· …電話機 150… …絞線對網路 170 …， …電話交換機 210 …. …電話聲音頻帶 220 …. …衝突頻帶 222 …. ••衝突信號音 230 …. ••資料頻帶 310···· ••接合處 320 …· ••高通濾波器 322 …· ••時低通濾波器 330···· ••解碼器 340···· ••信號音檢測器 342···· ••信號產生器 350 …· ••親合器 360···· ••編碼器 370 …· ••信號音產生器 I---! I — — — — — — ^^— — 1! (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 484278 A7 B7 五、發明說明（"） 410……類比至數位轉換器（A/D) 420……等化器 430……QAM解碼器 440……以太編碼器 510……以太解碼器 520……QAM編碼器 530……信號前處理器 540……數位至類比轉換器 .----;—；-------------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）V. Description of the Invention (Battle) Figure 1 shows a system in which multiple computers are coupled to a twisted pair telephone network via a media converter; Figure 2 shows graphs of conflicting frequency bands and data bands at higher frequencies than the telephone sound band Figure 3 is a block diagram of a media converter; Figure 4 is a block diagram of a decoder of a media converter; and Figure 5 is a block diagram of an encoder of a media converter. Referring to Figure 1, some computers 120 communicate with each other via an active twisted pair telephone network 150. As shown in FIG. 1, the twisted pair network 150 carries an acoustic signal between the telephone 140 and the telephone exchange 170. Each computer 120 is coupled to a twisted pair network 50 via a media converter 110. The twisted pair network 50 has two sets of conductors on which sound and data signals are transmitted. In this embodiment, the computer 120 uses an lOMb / s Ethernet standard, 10 groups of basic-T, and communicates with their corresponding media converters 110. The data link 122 includes two pairs of conductors, each pair used for each Direction communication. In the second embodiment, the computer and the media converter communicate using a set of 100Mb / S Ethernet standards and 100 sets of basic-T. The phone 140 is coupled to the twisted pair network 150 via a low-pass filter 130. The low-pass filter 130 passes signals in the telephone sound band and presents a high impedance on the twisted pair network at higher frequencies. Terminators 160 are coupled to the ends of the twisted pair network 150 to reduce reflections at high frequencies. Referring to FIG. 2, the media converter ΙΟ communicates using another set of bandwidths that are relatively small compared to the signal bandwidth. The signal is processed between the media converter and the computer 120 coupled to the media converter. The transmission medium β converter no transmits data to each other in the data band 230. Each media converter 7 This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) — — — — — — — — — — — 1111111 · 1111111 · (Please read the notes on the back first (Fill in this page again) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 484278 A7 B7__ 5. Description of the invention (5) " Transmission of data in the same frequency range. When transmitting data in the data band 23 0, the media converter Π0 also transmits a set of conflict signal tones 220 within the conflict band 22 0. Each media converter is assigned a different frequency to transmit its conflicting tone. The receiving media converter 110 detects a collision signal tone in the collision frequency band 220 other than its own frequency in order to detect a collision. In this manner, the media converter does not have to transmit in the data band 230 at the same time and detect transmissions by other media converters in the data band. The collision frequency band 220 and the data frequency band 230 are in different frequency ranges, and both of them are at a frequency higher than the aforementioned telephone audio frequency band 2.10, and do not extend beyond 5 kHz. Referring to Fig. 3, the media converter 110 has a transmitting section and a receiving section, and each of them is coupled to the twisted pair network 150 through a joint 310. In the receiving section, the Ethernet signal from a set of inward wiring pair 122b transmits the signal from the computer 120 to the media converter. These signals are transmitted to a set of encoders 3 60, which convert the Ethernet signals into a narrower bandwidth form (Figure 2) for transmission in the data band 230 to other media converters. In addition to encoding the Ethernet signal into a data band, when it receives a group of Ethernet signals on the wiring 122b, the media converter 110 also generates a set of conflicting signal tones in the signal tone generator 370. The generated conflict signal tone has a different frequency from the conflict signal tone generated by the tone generator 370 coupled to the twisted pair network 150 in other media converters 110. Both the conflicting tone generated by the tone generator 370 and the data signal encoded by the encoder 360 are coupled to the twisted pair network 150 via the joint 310. In the receiving part, the signal from the twisted-pair network is from the twisted-pair network 150 8 This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling (This page) ▼ Installation · _ 丨 · 丨 — 丨 丨 Order ----— I — * 484278 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of Invention (6) " was transmitted to a group of Qualcomm Filter 3 20 and a set of low-pass filters 322. The high-pass filter 320 passes the signal in the data band 230 (FIG. 2), and the low-pass filter 322 passes the signal in the collision band 220 (FIG. 2). When the media converter UI0 does not transmit signals to the twisted pair network 150 and receives data signals in the data band 230, the signals pass through the joint 310 and the high-pass filter 320 to the decoder 330. The decoder 3 30 converts the signal format used to communicate between media converters into a standard set of Ethernet signals. The Ethernet signal is transmitted through the coupler 3 50 and above the data link 122 outwards of the wiring group pair 122a, which couples the media converter 110 and the computer 120 when the media converter 110 transmits to the twisted pair network 150 and When receiving a set of conflicting tone, the tone generator 370 generates a conflicting tone at a frequency other than the frequency of the tone detector 340. The tone detector 340 transmits a set of signals to the signal generator 342, which then generates a A group signal is transmitted to the computer 120 via the coupler 3 50 over the wiring pair 122a. The resulting signal is an Ethernet format signal interpreted by computer 120 as another set of computer inputs, and the computer will therefore detect a conflict and stop transmitting. It should be noted that both the collision signal tone and the data signal in this system are frequencies above the aforementioned sound band. The separation of the sound signals from the signal about the data is achieved by passing through a low-pass filter and passing through a high-pass filter. Such separations and various configurations for coupling signals of the sound frequency band to the twisted-pair wiring network spurs are described in the aforementioned US Patent Application No. 98/11 197. See Figures 4 and 5, encoding The decoder 360 and the decoder 330 are used in 9 paper sizes to apply the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ----- — — — — — — — 1 · 1111111 ^ · 1111111 (Please (Please read the notes on the back before filling this page) A7 B7 V. Description of the invention (7) 'Convert between narrower frequency band signals and Ethernet signals transmitted over the twisted pair network 150. In this embodiment, the encoder 360 and the decoder 3 30 respectively include a set of modulators and a set of demodulators, which use quadrature amplitude modulation (Q AM) on the twisted pair network 150 communication. In this embodiment, 10 sets of basic-T ethers are used, and a set of QAM-16 methods are used, in which each transmitted symbol is selected from a group of 16-point clusters to generate a group of 4 transmitted symbols Meta transmission. As a result, the data band 230 is about 2.5 MHz or smaller in order to carry 10 sets of bitstreams of basically 10 Mb / s. In the second embodiment, of which 100 sets of basic-T ethers are used, QAM-128 is used, and the data band 230 is about 12Mhz wide or less. In other embodiments, other encoding methods that reduce the bandwidth of the Ethernet signal are used. Referring to FIG. 4, the decoder 330 includes a series of functional elements. An analog-to-digital converter (A / D) 4 10 converts the received signals in the data band into a set of digitally sampled waveform representations. This digitization means that it is digitally filtered in the equalizer 420. The equalizer 420 compensates the attenuated frequencies on the twisted pair network 150. In another embodiment, the equalizer 420 is adapted to the characteristics of the received signal. The equalized signal is passed to a QAM decoder 430, which outputs a serial bit stream that is encoded in the received signal. The serial bit stream is converted by the Ethernet encoder 440 for transmission to the destination computer. * In other embodiments, other processing of this processing program, such as performing some functions in the analog domain rather than the digitization domain, is performed. use. At the same time, additional components, such as providing error correction or echo cancellation mechanism, can also be included in the encoder and decoder. Referring to Figure 5, the encoder 360 essentially performs the reverse of the decoder 330. 10 sheets Standards are applicable to China National Standard (CNS) A4 specifications (210 X 297 mm) (please read the precautions on the back page and fill in this page). ———---- Order—-11. Intellectual Property Bureau, Ministry of Economic Affairs Printed by employee consumer cooperatives 278 Printed by employees of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 5. Operation of invention description (g) 2. A group of Ethernet decoders 510 receives the Ethernet signals from the computer and converts them into a series of serial bit streams. The QAM encoder 520 converts the bit stream into a set of digitized sampled waveform representations of the bit stream QAM code. This digitized waveform is processed in a signal pre-processor 530. In this embodiment, the signal pre-processor reinforces the higher frequency components of the encoded signal in advance in order to alleviate the larger attenuation of the higher frequency components. Finally, before the twisted pair is transmitted over the network, the processed digital waveform is transmitted via a digital-to-analog converter 540. Compared to the original Ethernet representation, which reduces the frequency bandwidth of the encoded data signal and thus allows lower frequency transmission, the data signal suffers less overall attenuation on the twisted pair network than the original Ethernet representation. This has the effect of increasing the signal-to-noise ratio (SNR) on the receiving media converter or, in addition, increasing the transmission range of the media converter. In order to allow collision detection, as previously described in the use of the conflict tone 222 in the conflict band 220, the transmission channel length is limited and thus allows collision detection at the transmission media converter before the transmission media converter completes the transmission. In this system, as with the aforementioned Ethernet standard, the Fused package has a length of at least 5 12 bits. In 10Mb / s, 512 bits correspond to 51.2 # s. If the transmission rate is assumed to be 2x1 08m / s, this package will be " extended " to more than 10km. In the second embodiment where a 100Mb / S signal is used, the package will be extended above lkm. In the case of a 10 Mb / S signal, if the maximum distance between the media converters is half the package length, or approximately 5 km, then if the second media converter arrives exactly in the package being transmitted from the first media converter It started Fu Fu • The first media "Converter will detect the conflicting signal tone of the second media converter before it finishes the Fushen package, so it detects that the paper is in compliance with the Chinese National Standard (CNS) A4 specification (11) 210 X 297 mm) — — — — 1 — — — — — — — · 1111111 · 11111111 (Please read the notes on the back before filling out this page) A7 B7 iλ Description of Invention (?) Similarly, in the second embodiment of the 100 Mb / s signal, the maximum separation between the media converters is about 500 m. In other embodiments, other signal configurations in the frequency spectrum are used. To limit the frequency above the data band, the same frequency band is used for two-way transmission of a twisted pair network in a half-duplex configuration. To support robust conflict detection, conflict signals from media converters of different frequencies are used. In the previously described embodiment, the frequency of the collision frequency band 220 and the data frequency band 230 are different. In another embodiment, the collision signal may be transmitted within a data band. For example, if a set of multiple audio signal methods are used to transmit within the data band 230 instead of transmitting over QAM, the conflicting signal tones can be spread using the emitted signal tones. At the same time, other collision signals that are not tones can be used additionally. For example, a quadrature narrowband signal or a spread spectrum signal that is unique to each media converter can be used instead of the conflicting tone. The signalling method described above can be applied in a single building, in a separate building, or between a telephone switching office and multiple dwellings. A central hub can couple computers to twisted-pair networks on different branches, and is limited by the maximum total distance between computers. All computers can function within a single conflict domain. It should be understood that the foregoing description is intended as a demonstration and does not limit the scope of the present invention, which is defined by the scope of the scope of patent application attached. * Other examples are within the scope of the scope of patent application below. This paper size applies to China. National Standard (CNS) A4 Specification (210 X 297 mm) (Please read the notes on the back before filling out this page) · I ------ Order · — · ------ Wisdom of the Ministry of Economy Printed by the Consumers 'Cooperative of the Property Bureau-Ί 484278 A7 B7 V. Description of the Invention (μ) Component Label Comparison Table Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 110 ···… Media Converter 120… Computer 122… Information Link 122a ······················································ ······················ … Collision band 222… •• collision signal tone 230… •• data band 310 ···· •• joint 320… · •• high-pass filter 322… · •• low-pass filter 330 ··· · • Decoder 340 ···· • Signal tone detector 342 ·· ••• Signal generator 350… ••• Analyzer 360 ··· •• Encoder 370… · •• Signal tone generator I ---! I — — — — — — ^^ — — 1! (Please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 484278 A7 B7 V. Description of the invention 410 ... Analog-to-digital converter (A / D) 420 ... Equalizer 430 ... QAM decoder 440 ... Ethernet encoder 510 ... Ethernet decoder 520 ... QAM encoder 530 ... signal pre-processor 540 ... digital-to-analog converter. ----;-; ------------- order --------- line (Please read the notes on the back before filling out this page) The paper size printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs applies to the Chinese National Standard (CNS) A4 (210 X 297 mm)