TW574825B

TW574825B - Transceiver of triple modulation threefold signal

Info

Publication number: TW574825B
Application number: TW91120946A
Authority: TW
Inventors: Tsu-Hung Chen; Cheng-Hung Lu
Original assignee: Airwave Technologies Inc
Priority date: 2002-09-13
Filing date: 2002-09-13
Publication date: 2004-02-01

Description

574825 五、發明說明（1) 發明領域】本發明為一種使用三次調變對三個獨立接收的裝置，特別是利用分次調變/解調設〜乍傳适/ 號:：影像、左聲頻及右聲頻等三個獨立訊號進V傳迗/接收的裝置。 A叮得 :發明背景】習知立體聲電視訊號的傳送方式如『第1圖的圖所示，其中將輸入之右（R)、左（L)聲頻訊號分別透鬼一輸入放大器10U、第二輸入放大器1〇12將右（R)、左吊聲頻訊號放大後，右（R)聲頻訊號再透過第一調變器1〇^^) 變後，將調變後的訊號經一第一帶通濾波器1°〇 3輸^至一胃第一合成器106中；左（L)聲頻訊號再透過第二調變器1〇4 調變後’將調變後的訊號經一第二帶通濾波器1 〇 5輸出至一第一合成器1 0 6中；該第一合成器1 〇 6再將合成後的訊號輸入一第二合成器1 〇 7中，一影像訊號（v )經第三輸入放^ 器1 0 1 3放大後，將放大後的訊號輸入第二合成器1 〇 7 ;該弟^一合成為再將合成後的訊5虎輸入一第三調變器i〇g 中，經調變後，透過一輸出帶通濾波器i 〇 9經發射天線i 將訊號發射出去。 Μ而，此方式之左（L)、右（{〇聲 102與第二調變器104調變後之第一 ^立^ 二交裔形成的合成訊號佔有較寬的頻0 第二聲日=j載f，所載波的差頻訊號容易干擾影而且第-和ί二聲音副送的左（L)、右（R)聲頻，因此相對地使用所傳 3興衫像訊號（V )的頻帶變窄且574825 V. Description of the invention (1) Field of the invention] The present invention is a device that uses three modulations to three independent receivers, especially using a split modulation / demodulation device ~ Zhuchuanshi / :: Video, Left Audio And right audio, three independent signals into the V transmission / reception device. A Dingde: Background of the Invention] The conventional method for transmitting stereo television signals is shown in the figure in Figure 1, where the input right (R) and left (L) audio signals are transmitted through the ghost one input amplifier 10U, the second The input amplifier 1012 amplifies the right (R) and left hanging audio signals, and then the right (R) audio signal is changed by the first modulator 1〇 ^^), and the modulated signal is passed through a first band. The pass filter 1 ° 03 is input to the first synthesizer 106; the left (L) audio signal is modulated by the second modulator 104, and the modulated signal is passed through a second band. The pass filter 1 05 is output to a first synthesizer 106; the first synthesizer 106 receives the synthesized signal and inputs it to a second synthesizer 107, and an image signal (v) passes through After the third input amplifier 1 0 1 3 is amplified, the amplified signal is input to the second synthesizer 1 107; the second synthesizer is to synthesize the synthesized signal 5 into a third modulator i. In g, after modulation, the signal is transmitted through a transmitting antenna i through an output band-pass filter i 〇9. In addition, the left (L) and right ({0 sound 102 and the second modulator 104 tune the first ^ standing ^ composite signal formed by the second intersect in this way occupies a wider frequency 0 second sound day = j load f, the difference signal of the carrier is easy to interfere with the video and the left (L) and right (R) audio signals of the second and second sounds are sub-transmitted, so the transmitted 3 Xingshan like signal (V) is used relatively Narrows the frequency band and

574825 五、發明說明（2) 所用第一和第二聲音副載波訊號強度較弱，經解調後的聲頻和影像訊號具有較差的品質。另一習知立體聲電視訊號的傳送方式如『第2圖』的方塊圖所不，其中將輸入之右（R)、左（L)聲頻訊號分別透過第一輸入放大器101卜第二輸入放大器101 2將右（R)、左（L)聲頻訊號放大後，經一多工器201分別輸出_ r + l、 R - L訊號，其中R + L訊號輸入至一第一合成器2〇2中；R-L 訊號亦輸入至第一合成器2 0 2中；此外，更利用一具有聲音副載波相位資料的導引訊號（Pilot Tone)輸入至第一合成器202中；該弟一合成器20 2再將合成後的訊號輸入一第二合成器203中’ 一影像訊號（V)經第三輸入放大1〇13 放大後，將放大後的訊號輸入第二合成器203;該第二合成器2 0 3再將合成後的訊號輸入一調變器2 〇 4中，經調變後’透過一輸出帶通渡波器2 0 5經發射天線u 〇將訊號發射出去。然而，此方式必須在接收端藉產生一高強度的導引訊號來恢復左（L)、右（L)聲頻訊號，而為了避免此導訊號干擾影像訊號及和影像之水平同步訊號產生刺耳的『差拍=聲頻訊號，因此一般設定導弓丨訊號之頻率和水平同步訊號相同，約1 5。7kHz，如此則限制了、右（R)聲頻訊號頻帶之高頻端不能大限制了聲音訊號的品質。 ^ :發明之概述及目的】本發明提出一種三次調變三重訊號的傳送/接收裝574825 V. Description of the invention (2) The strength of the first and second sound subcarrier signals used is weak, and the demodulated audio and video signals have poor quality. Another conventional stereo TV signal transmission method is as shown in the block diagram of "Figure 2", in which the input right (R) and left (L) audio signals are passed through the first input amplifier 101 and the second input amplifier 101, respectively. 2 After amplifying the right (R) and left (L) audio signals, a multiplexer 201 outputs _ r + l and R-L signals, respectively, where the R + L signal is input to a first synthesizer 202 ; The RL signal is also input to the first synthesizer 202; in addition, a pilot signal (Pilot Tone) with sound subcarrier phase data is also input to the first synthesizer 202; the brother-synthesizer 20 2 The synthesized signal is then input to a second synthesizer 203. An image signal (V) is amplified by the third input 1013, and the amplified signal is input to the second synthesizer 203; the second synthesizer 2 0 3 and then input the synthesized signal into a modulator 2 0 4. After modulation, the signal is transmitted through a transmitting antenna u 0 through a transmitting antenna u 0. However, this method must generate a high-intensity pilot signal at the receiving end to recover the left (L) and right (L) audio signals, and in order to avoid this pilot signal from interfering with the image signal and generating a jarring noise from the horizontal synchronization signal of the image "Differential beat = audio signal, so generally set the guide bow 丨 the frequency of the signal is the same as the horizontal sync signal, about 15.7kHz, so it limits the high-frequency end of the right (R) audio signal band, which cannot greatly limit the sound signal Quality. ^: Summary and purpose of the invention] The present invention proposes a transmission / reception device for triple modulation triple signal

筮r百 574825 五、發明說明（3) 置，至少包含一發射單元與一接收單元。其中，該發射單元至少包含：一第一調變器、一第一合成器、一第二調變器、一第二合成器、一第三調變器、一功率放大器。藉由第一調變器、第二調變器與第三調變器，分別將一第一聲頻訊號、一第二聲頻訊號與一影像訊號等三重訊號加以調變，在分次調變過程中分別依序透過一第一合成器與一第二合成器加以將訊號合成，最後將調變的訊號透過一功率放大器加以放大及一射頻濾波器進行濾波，並藉由一發設天線將訊號發射出去。該接收單元至少包含··一射頻放大及降頻器、一第一帶通濾波器、一第一解調器、一第一低通濾波器、一第二帶通濾波器、一第二解調器、一第二低通濾波器、一第三帶通濾波器、及一第三解調器。藉由一射頻放大及降頻器將接收自發射單元所發射出之訊號進行濾波、放大及降為中頻訊號，透過一第一帶通濾波器的濾波與一第一解調器的解調成為一第一解調訊號，再將第一解調訊號透過一第一低通濾波器還原成該影像訊號；再將第一解調訊號經一第二帶通濾波器的濾波與一第二解調器的解調成為一第二解調訊號，再將第二解調訊號透過一第二低通濾波器還原成第二聲頻訊號；再將第二解調訊號經一第三帶通濾波器的濾波與一第三解調器的解調並還原成第一聲頻訊號。上述的說明，雖然係針對包括影像訊號及其相關之功百百百 574574825 V. Description of the Invention (3) The device includes at least a transmitting unit and a receiving unit. The transmitting unit includes at least a first modulator, a first synthesizer, a second modulator, a second synthesizer, a third modulator, and a power amplifier. The first modulator, the second modulator, and the third modulator are used to modulate a triple signal such as a first audio signal, a second audio signal, and an image signal, respectively. The signals are sequentially synthesized by a first synthesizer and a second synthesizer, and finally the modulated signal is amplified by a power amplifier and filtered by an RF filter, and the signal is transmitted by an antenna. Launch out. The receiving unit includes at least a radio frequency amplifier and down-converter, a first band-pass filter, a first demodulator, a first low-pass filter, a second band-pass filter, and a second solution. A modulator, a second low-pass filter, a third band-pass filter, and a third demodulator. A radio frequency amplification and downconverter is used to filter, amplify, and reduce the signal transmitted from the transmitting unit to an intermediate frequency signal, and then to filter by a first band-pass filter and demodulate a first demodulator. It becomes a first demodulation signal, and then the first demodulation signal is restored to the image signal through a first low-pass filter; the first demodulation signal is filtered by a second band-pass filter and a second The demodulator's demodulation becomes a second demodulation signal, and then the second demodulation signal is restored to a second audio signal through a second low-pass filter; the second demodulation signal is subjected to a third band-pass filtering Filter and demodulation of a third demodulator and restore the first audio signal. The above descriptions are directed at including video signals and related functions.

574825 五、發明說明（4) 能組件之三次調變三重訊號的傳送/接收，但本發明亦可用於單獨發射及接收不含影像訊號之二重訊號的立體聲頻訊號而不失其原有優點。此時，只需將『第3圖』之發射單元中的影像訊號輸入端及第二合成器與『第4圖』之接收單元中的第一低通濾波器及影像輸出端省去即可。有關本發明之詳細内容及技術，茲就配合圖式說明如下。【發明之詳細說明】574825 V. Description of the invention (4) The transmission / reception of the triple modulation triple signal of the energy module, but the invention can also be used to separately transmit and receive the stereo frequency signal without the double signal of the image signal without losing its original advantages . At this time, it is only necessary to omit the image signal input terminal and the second synthesizer in the transmitting unit of "Figure 3" and the first low-pass filter and the image output terminal in the receiving unit of "Figure 4." . The detailed content and technology of the present invention are described below with reference to the drawings. [Detailed description of the invention]

『第3圖』為本發明三次調變三重訊號發射單元的電路方塊圖，其中將輸入之第一獨立訊號之第一聲頻訊號 (R)透過第一輸入放大器1011將第一聲頻訊號（r)放大後，經一第一調變器3 0 1調變後輸出一第一調變訊號，再將第一調變訊號輸入至一第一合成器3 0 2中；將輸入之第二獨立訊號之第二聲頻訊號（L )透過一第二輸入放大器1 0 1 2將第二聲頻訊號（L)放大後，將訊號輸入至一第一合成器3 0 2 中；上述訊號經第一合成器3 0 2相加後形成一第一合成訊號’再將該第一合成訊號輸入至一第二調變器3 0 3中調變後輸出一第二調變訊號，該第二調變訊號再輸入一第二合成器3 0 4中；一第三獨立訊號之影像訊號（V )經第三輸入放大器1 0 1 3放大後，將放大後的訊號輸入第二合成器3 0 4 ; 該第二合成器30 4再將合成後的第二合成訊號輸入一第三調變器3 0 5中調變後輪出一第三調變訊號，最後透過一功率放大器30 6及一射頻濾波器3〇 7後經發射天線110將訊號發射出去。[Figure 3] is a circuit block diagram of the three-modulation triple-signal transmitting unit of the present invention, in which a first audio signal (R) of an input first independent signal is transmitted to a first audio signal (r) through a first input amplifier 1011 After amplification, a first modulation signal is output after being modulated by a first modulator 301, and then the first modulation signal is input to a first synthesizer 302; a second independent signal is inputted The second audio signal (L) is amplified by a second input amplifier 1 0 1 2 and is then input to a first synthesizer 3 02; the above signal is passed through the first synthesizer 3 0 2 is added to form a first composite signal. Then the first composite signal is input to a second modulator 3 0 3 and a second modulation signal is output after the modulation. The second modulation signal is then Input to a second synthesizer 3 0 4; an image signal (V) of a third independent signal is amplified by the third input amplifier 1 0 1 3, and the amplified signal is input to the second synthesizer 3 0 4; the first The second synthesizer 30 4 inputs the synthesized second synthesized signal to a third modulator 3 0 5 to modulate the rear wheel. A third modulation signal is output, and finally the signal is transmitted through a transmitting antenna 110 through a power amplifier 30 6 and a radio frequency filter 3 07.

第7頁 574825 五、發明說明（5) 『第4圖』為本發明三次調變三重訊號接收單元的電路方塊圖，一接收天線4 0 1連接於一射頻放大及降頻器4 0 2 的輸入端，該射頻放大及降頻器40 2的輸出端連接於第一帶通濾波器4 0 3，該第一帶通濾波器4 0 3係將由射頻放大及降頻器4 0 2所濾波、放大並降為中頻的訊號加以濾波，並再經由一第一解調器4 0 4將濾波後的中頻訊號解調成一第一解調訊號，該第一解調訊號透過一第一低通濾波器4 0 5 的濾波還原成第三獨立訊號之影像訊號（V )，並將影像訊號（V )經由第一輪出放大器4 111放大而由影像訊號端輸出。上述之第一解調訊號更透過一第二帶通濾波器4 0 6加以濾波，並再經由一第二解調器4 0 7將濾波後的訊號解調成第二解調訊號，該第二解調訊號透過一第二低通濾波器 4 0 8的濾波還原成第二獨立訊號之第二聲頻訊號（L )，並將第二聲頻訊號（L )經由第二輸出放大器4 11 2放大而由左（L ) 聲頻訊號端輸出。上述之第二解調訊號更透過一第三帶通濾波器4 0 9加以濾波，並再經由一第三解調器4 1 0將濾波後的訊號解調還原成第一獨立訊號之第一聲頻訊號（R )，並將第一聲頻訊號（R )經由第三輸出放大器4 1 1 3放大而由第一聲頻訊號 (R)端輸出。綜上所述，第一聲頻訊號（R )及第二聲頻訊號（L )之傳送在本發明中是由第一調變器將第一聲頻訊號調變後與第二聲頻訊號經第一合成器3 0 2的訊號合成，再經第二調變Page 7 574825 V. Description of the invention (5) "Figure 4" is a circuit block diagram of the triple modulation triple signal receiving unit of the present invention. A receiving antenna 4 0 1 is connected to a radio frequency amplifier and downconverter 4 0 2 Input, the output of the RF amplifier and downconverter 40 2 is connected to the first bandpass filter 4 0 3, the first bandpass filter 4 0 3 will be filtered by the RF amplifier and downconverter 4 0 2 , Amplify and reduce the signal to intermediate frequency to filter, and then demodulate the filtered intermediate frequency signal into a first demodulated signal through a first demodulator 400, the first demodulated signal passes through a first The filtering of the low-pass filter 4 0 5 is restored to the image signal (V) of the third independent signal, and the image signal (V) is amplified by the first round-out amplifier 4 111 and output from the image signal terminal. The first demodulated signal is filtered by a second band-pass filter 406, and the filtered signal is demodulated into a second demodulated signal by a second demodulator 407. The second demodulated signal is restored by a second low-pass filter 408 to a second audio signal (L) of a second independent signal, and the second audio signal (L) is amplified by a second output amplifier 4 11 2 It is output from the left (L) audio signal terminal. The second demodulated signal is filtered by a third band-pass filter 409, and the filtered signal is demodulated and restored to the first of the first independent signal by a third demodulator 4 1 0. The audio signal (R) is amplified by the first audio signal (R) through the third output amplifier 4 1 1 3 and output from the first audio signal (R). In summary, in the present invention, the transmission of the first audio signal (R) and the second audio signal (L) is performed by the first modulator after the first audio signal is modulated with the second audio signal through the first synthesis. Synthesizer 3 0 2 signal, and then second modulation

574825574825

五、發明說明(6) ----------- 變於單一副載波訊號，其所佔示之雙聲頻副載波架構所需 f π較『第1圖』t 品質ν 1 ,敉好的影前述對本發明之說明雖然訊號之傳輸，但對於不含影訊二矾號之三次調變三訊號也同樣能單獨傳輪，而且 ^ —重訊號的立體聲訊號無最高頻率限制及因使用$ ^頻寬相對較窄，較低：f位雜訊等優點。針對此ί ΐ副載波訊號頻 3圖』的發射單元φ々旦^一 /对此類應用，只堂脸頻訊號（R)及第二聲頻訊號（j，窄，而且對第一，因此經解調後的聲頻訊號〜具之最高頻率沒有限地允許較寬的頻帶供影像訊^ ^佳的品質，此外更相質。〜迗，而可有較好的影像前述對木發明之詒BB W π . 第3圖』的發射單元中之此類應用，只需〇13及ΐ二合成器3〇4與『第LW第三輪入放大器省 L 2 $益405、第一輪出 θ』η收單元中之第_ :去即可。及影像輪出端等•且件限雖然本發明以前述用於立體聲電視訊^ ^乜實靶例揭露如上，熟習此技藝者，在，亦非用以限定本“其並非請專利範圍所界定者g ^本發明之保護範圍^ έ當可作為準。硯後附之申V. Description of the invention (6) ----------- It changes to a single sub-carrier signal, and its required dual-audio sub-carrier architecture requires f π to be higher than 『1』 t quality ν 1, The good description of the invention described above, although the signal is transmitted, it can also be transmitted independently for the three modulation three signals that do not include the video signal two aluminum signals, and the stereo signal of the heavy signal has no maximum frequency limitation and use. $ ^ The bandwidth is relatively narrow and low: f-bit noise and other advantages. Aiming at the transmission unit of this "Sub-carrier signal frequency 3", for one application, only the Facebook signal (R) and the second audio signal (j, narrow, and the first, so the The demodulated audio signal has no limitation on the maximum frequency and allows a wider frequency band to be used for video signals. ^ ^ Good quality, and more qualitative. 迗而, and can have better video 前述 BB "W π. Figure 3" for such applications in the transmitting unit, only 〇13 and second synthesizer 304 and "LW third round-in amplifier save L 2 $ benefit 405, first round out θ" The first _ in the receiving unit: you can go. And the video wheel output, etc. and the restrictions. Although the present invention is disclosed as above for stereo TV signals ^ ^ Real target example is disclosed above, those who are familiar with this art, either, or not It is used to limit this "which is not defined by the scope of the patent. G ^ The scope of protection of the present invention ^ shall prevail. 附 Attached application

574825 圖式簡單說明第1圖為習知電視立體聲發射單元的電路方塊圖；第2圖為另一習知電視立體聲發射單元的電路方塊圖；第3圖為本發明電視立體聲發射單元的電路方塊圖；及第4圖為本發明電視立體聲接收單元的電路方塊圖。【符號說明】 1011第一輸入放大器 1012第二輸入放大器 1013第三輸入放大器 102 第一調變器 103 第一帶通濾波器 104 第二調變器 105 第二帶通濾波器 106 第一合成器 107 第二合成器 108 第二調變器 109 輸出帶通濾波器 110 發射天線 201 多工器 202 第一合成器 203 第二合成器 204 調變器 205 輸出帶通濾波器 301 第一調變器574825 Brief description of the diagram. Figure 1 is a circuit block diagram of a conventional television stereo transmitting unit. Figure 2 is a circuit block diagram of another conventional television stereo transmitting unit. Figure 3 is a circuit block diagram of a television stereo transmitting unit according to the present invention. And FIG. 4 is a circuit block diagram of a television stereo receiving unit according to the present invention. [Symbol description] 1011 first input amplifier 1012 second input amplifier 1013 third input amplifier 102 first modulator 103 first bandpass filter 104 second modulator 105 second bandpass filter 106 first synthesizer 107 Second synthesizer 108 Second modulator 109 Output band-pass filter 110 Transmit antenna 201 Multiplexer 202 First synthesizer 203 Second synthesizer 204 Modulator 205 Output band-pass filter 301 First modulator

第10頁Page 10

574825 圖式簡單說明 3 0 2 第一合成器 3 0 3 第二調變器 3 0 4 第二合成器 3 0 5 第三調變器 3 0 6 功率放大器 3 0 7 射頻濾波器 401 接收天線 4 0 2 射頻放大及降頻器 4 0 3 第一帶通濾波器 4 0 4 第一解調器 40 5 第一低通濾波器 4 0 6 第二帶通濾波器 4 0 7 第二解調器 40 8 第二低通濾波器 40 9 第三帶通濾波器 410 第三解調器 4111第一輸出放大器 4112第二輸出放大器 4113第三輸出放大器574825 Brief description of the diagram 3 0 2 First synthesizer 3 0 3 Second modulator 3 0 4 Second synthesizer 3 0 5 Third modulator 3 0 6 Power amplifier 3 0 7 RF filter 401 Receive antenna 4 0 2 RF amplifier and downconverter 4 0 3 First band-pass filter 4 0 4 First demodulator 40 5 First low-pass filter 4 0 6 Second band-pass filter 4 0 7 Second demodulator 40 8 Second low-pass filter 40 9 Third band-pass filter 410 Third demodulator 4111 First output amplifier 4112 Second output amplifier 4113 Third output amplifier

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Claims

574825 六、申請專利範圍 1. 一種三次調變三重訊號的傳送/接收裝置，至少包含一發射單元與一接收單元，其中：該發射單元至少包含：一第一調變器，提供一第一獨立訊號經放大後輸入該第一調變器，並輸出一第一調變訊號；一第一合成器，用以耦合該第一調變訊號與經放大後的一第二獨立訊號，並輸出一第一合成訊號；一第二調變器，用以輸入該第一合成訊號，並輸出一第二調變訊號；一第二合成器，用以耦合該第二調變訊號與經放大後的一第三獨立訊號，並輸出一第二合成訊號；一第三調變器，用以輸入該第二合成訊號，並輸出一第三調變訊號；一功率放大器，用以輸入該第三調變訊號，並將該第三調變訊號放大；一射頻濾波器，用以輸入該經放大的第三調變訊號，並將不必要雜訊及衍生訊號加以濾除，再藉由一發射天線，將濾除後的該第三調變訊號發射出；該接收單元至少包含：一射頻放大及降頻器，藉由一接收天線用以接收該發射單元發射出之該第三調變訊號，並經濾波、放大及降頻後輸出一中頻訊號；一第一帶通濾波器，用以輸入該中頻訊號，並將該中頻訊號加以濾波；574825 6. Scope of patent application 1. A transmission / reception device with three modulation and triple signals, including at least a transmitting unit and a receiving unit, wherein: the transmitting unit includes at least: a first modulator, providing a first independent The amplified signal is input to the first modulator and outputs a first modulated signal; a first synthesizer is used to couple the first modulated signal with a amplified second independent signal and output a A first synthesizing signal; a second modulator for inputting the first synthesizing signal and outputting a second modulation signal; a second synthesizer for coupling the second modulating signal and the amplified signal A third independent signal and outputting a second composite signal; a third modulator for inputting the second composite signal and outputting a third modulation signal; a power amplifier for inputting the third modulation signal Changing the signal and amplifying the third modulation signal; a radio frequency filter for inputting the amplified third modulation signal, filtering out unnecessary noise and derivative signals, and then using a transmitting antenna Transmitting the filtered third modulation signal; the receiving unit includes at least: a radio frequency amplification and downconverter, and a receiving antenna for receiving the third modulation signal transmitted by the transmitting unit, and Output an intermediate frequency signal after filtering, amplifying and reducing the frequency; a first band-pass filter for inputting the intermediate frequency signal and filtering the intermediate frequency signal;

第12頁 574825 六、申請專利範圍一第一解調器，用以輸入該濾波後的該中頻訊號，並輸出一第一解調訊號；一第一低通濾波器，用以輸入該第一解調訊號，並還原成該第三獨立訊號，並將該第三獨立訊號經由一第一輸出放大器放大輸出該第二獨立訊號；一第二帶通濾波器，用以輸入該第一解調訊號，並將該第一解調訊號加以濾波；一第二解調器，用以輸入該濾波後的該第一解調訊號，並輸出一第二解調訊號；一第二低通濾波器，用以輸入該第二解調訊號，並還原成該第二獨立訊號，並將該第二聲頻訊號經由一第二輸出放大器放大輸出為該第二獨立訊號；一第三帶通濾波器，用以輸入該第二解調訊號，並將該第二解調訊號加以濾波；及一第三解調器，用以輸入該濾波後的該第二解調訊號，並還原成該第一獨立訊號，並將該第一獨立訊號經由一第三輸出放大器放大輸出該第一獨立訊號。 2. 如申請專利範圍第1項所述之三次調變三重訊號的傳送/ 接收裝置，其中該第一獨立訊號係為一聲頻訊號。 3. 如申請專利範圍第1項所述之三次調變三重訊號的傳送/ 接收裝置，其中該第二獨立訊號係為一聲頻訊號。 4. 如申請專利範圍第1項所述之三次調變三重訊號的傳送/ 接收裝置，其中該第三獨立訊號係為一影像訊號。Page 12 574825 VI. Patent application scope-a first demodulator for inputting the filtered IF signal and outputting a first demodulation signal; a first low-pass filter for inputting the first A demodulated signal is restored to the third independent signal, and the third independent signal is amplified by a first output amplifier to output the second independent signal. A second band-pass filter is used to input the first solution. Modulates the signal and filters the first demodulated signal; a second demodulator is used to input the filtered first demodulated signal and output a second demodulated signal; a second low-pass filter A device for inputting the second demodulated signal and reducing it to the second independent signal, and amplifying and outputting the second audio signal into the second independent signal through a second output amplifier; a third band-pass filter To input the second demodulated signal and filter the second demodulated signal; and a third demodulator to input the filtered second demodulated signal and restore it to the first Independent signal, and the first independent Resolution via a third output from the amplifier amplifies the output signal of the first individual. 2. The transmitting / receiving device of the three-modulation triple signal as described in item 1 of the scope of patent application, wherein the first independent signal is an audio signal. 3. The transmitting / receiving device of the three-modulation triple signal as described in item 1 of the scope of patent application, wherein the second independent signal is an audio signal. 4. The transmitting / receiving device of the three-modulation triple signal as described in item 1 of the scope of patent application, wherein the third independent signal is an image signal.

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