經濟部智慧財產局員工消費合作社印製 8^43 9370 Λ Α7 . __Β7_____五、發明說明（1 ) 【發明之所屬技術領域】 本發明係關於在特定、同一空間內，同時無線傳送接 收例如語言、內容、音質等不同之3種以上之音聲訊號’ •特別是適合於音聲會議系統之複數音聲同時通訊系統者。 【習知之技術】 例如，在進行國際會議之情形，將不同語言之音聲訊 號以不同之頻率同時無線傳送於會議場內，將與因應所希 望語言之頻率調諧之接收機借給各入場者，在所希望時， 可以聽取之前希望之特定之語言之翻譯音聲之故’在國際 會議之進行上很便利。 又，在進行商品展示之情形’將不同之介紹（內容） 以不同之頻率同時無線傳送於展示場內’將與因應所希望 介紹之頻率調諧之接收機借給各入場者，在所希望時’可 以聽取之前希望之特定之介紹之故’在各展示介紹上很便 利。 因此，在以往’即提案：可以將語言、內容 '音質等 不同之複數種之音聲訊號同時無線傳送接收之複數音聲同 時通訊系統。 習知之此種系統’以採用在每一音聲訊號分配不同之 頻率，加以調製，當成1個之傳送電波，送出於空間之頻 率多重方式爲牛流。 【發明欲解決之課題】 二 Μ JI1 — l—ilfllr·、.)裝 ί 1 ! I 訂 _ III ! 1 -線 (請先閱讀背面之注意事項再填寫本頁) 太紙張尺度適用中國國家標準（CNS)A4規格mo X 297公釐） -4- A7 ___B7__ 五、發明說明（2 ) 但是，在上述習知系統中，存在下述之問題。 (請先閱讀背面之注意事項再填寫本頁) 即，由於祕密地或收費進行上述會議或展示等之情事 ，會有只希望在空間被區隔之特定的1會場內進行音聲訊 ’號之傳送接收之情形。在此種情形，在上述習知系統中， 使用電波作爲無線傳送媒體之故，在該會場內被無線傳送 之音簪剖號也傳送於會場外，會有祕密或收費之資訊等， 一般無意公開之資訊洩漏於外部之問題點。 因此，使用紅外線作爲無線傳送媒體，一般無意公開 之資訊不會由空間被區隔之特定的1會場內洩漏於外部之 系統也被考慮著。 經濟部智慧財產局員工消費合作社印製 在習知之此種傳送系統中，爲了保持一定之傳送品質 ，以F Μ調製音聲訊號二次調製載波訊號，藉由此二次調 製訊號將紅外線訊號當成傳送媒體給予傳送之，在接收側 ，由光電轉換之紅外線訊號進行F Μ解調，獲得音聲訊號 。但是，可以以複數之不同頻率頻帶進行傳送接收之_F j 調製·萝調用之構件，特別是可以不同之所希望的頻率頻 帶進行FM調製之構件，在市場上不容易買到二撰肩4^-。例如，雖然也有CD (光碟）、使用當成音頻用以特定 頻率頻帶進行FM調製.解調之系統者，因係立體聲（2 頻道）傳送用之構件之故，即只能同時傳送2種之音聲訊 號。因此，無法將頻率頻帶區分同時傳送接收3頻道以上 ，無法利用上述系統以低成本構成系統。 本發明之目的在於提供：在特定、同一空間內，可以 ......· 同時無線傳送3種以上之音聲訊號，同時 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工湞費合作社印製 p，."i . ..... · ；'：ί d Ci : A7 _B7_ 五、發明說明（3 ) ，且可以以低成本實現之複數音聲同時通訊系 統。 【解決課題用之手段】 申請專利範圍第1項記載之複數音聲同時通訊系統係 一種：在將音聲轉換爲電氣訊號，放大之'依據該訊號， 調製爲特定頻率之載波後，以無線傳送媒體送出於空間之 發訊機，以及接收由此發訊機發出之訊號，調諧、解調、 放大後，轉換爲音聲之接收機之間進行音聲訊號之無線傳 送接收之音聲通訊系統，具備使載波頻率不同之3台以上 之發訊機，以及調諧頻率分別與這些發訊機之載波頻率一 致之3台以上之接收機，在特定、同一空間內，可以同時 無線傳送接收3镡以上之音聲訊號之複數音聲同時通訊系 統，其特徵爲：上述無線傳送媒體爲紅外線，調製.解調 爲AM調製·解調者。 由各發訊機對接收機傳送出將發訊機固有之頻率之載 波以音聲訊號做A Μ調製之紅外線訊號，接收機由將紅外 線訊號做光電轉換之訊號，以上述發訊機之固有之頻率調 諧之、進行AM解調，獲得特定發訊機之音聲訊號。各發 訊機以互相不同之固有頻率送出紅外線訊號之故*可以在 同一空間內傳送接收3種以上之音聲訊號。又*採用AM 調製·解調方式之故，可以利用便宜之構件。 【發明之實施形態】 (請先閱讀背面之注意事項再填寫本頁) 裝 ----線 三 ί: 本紙張尺度·適用中國國家標準（CNS)A4規格（210 >= 297公釐） -6 - 143937 0 Α7 Β7 五、發明說明（4 ) 以下，參考圖面說明本發明之實施形態。 (請先閲讀背面之注意事項再填寫本頁) 圖1係顯示依據本發明之複數音聲同時通訊系統之一 實施形態之方塊圖。Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 8 ^ 43 9370 Λ Α7. __Β7 _____ V. Description of the Invention (1) [Technical Field to which the Invention belongs] The present invention relates to the simultaneous wireless transmission and reception of languages in a specific, same space More than 3 types of audio signals with different content, content, sound quality, etc. '• Especially suitable for the simultaneous communication system of multiple audio systems for audio conference systems. [Knowledgeable technology] For example, in the case of international conferences, the voice signals of different languages are transmitted wirelessly in the conference hall at different frequencies at the same time, and the receiver tuned to the frequency of the desired language is lent to each participant It is very convenient for the international conference to listen to the translation sound of the specific language that I had hoped for before. In the case of product display, 'different introductions (contents) are transmitted wirelessly in the exhibition hall at different frequencies at the same time' and the receivers tuned to the frequency of the desired introduction are lent to each participant. 'You can hear the specific introduction you had hoped for before' is convenient for each presentation. Therefore, in the past, it was proposed that a plurality of different types of audio signals, such as language and content, and sound quality, can be wirelessly transmitted and received simultaneously with a plurality of simultaneous audio systems. Such a conventional system 'uses a different frequency for each audio signal and modulates it as one transmission radio wave, and the multiple frequency transmission mode is bullish. [Problems to be Solved by the Invention] Two M JI1 — l—ilfllr · ,.) installed 1! I ordered _ III! 1-line (Please read the precautions on the back before filling this page) Too large paper size applies Chinese national standards (CNS) A4 specification mo X 297 mm) -4- A7 ___B7__ 5. Description of the invention (2) However, in the above conventional system, there are the following problems. (Please read the notes on the back before filling in this page) That is, because the above meetings or exhibitions are conducted in secret or for a fee, there will be only the number of audio and video signals in a specific venue where the space is partitioned. Transmission and reception situation. In this case, in the above-mentioned conventional system, because radio waves are used as a wireless transmission medium, the audio and video numbers transmitted wirelessly in the venue are also transmitted outside the venue, and there will be secret or charge information, etc., generally unintentional Open information leaks to external issues. Therefore, a system that uses infrared as a wireless transmission medium and generally does not disclose information that is not intended to be leaked to the outside of a specific venue where space is partitioned is also considered. The consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs has printed this conventional transmission system. In order to maintain a certain transmission quality, the carrier signal is modulated by the FM modulation audio signal and the infrared signal is regarded as the second modulation signal. The transmission medium gives transmission. On the receiving side, the FM demodulation is performed by the photoelectrically converted infrared signal to obtain an audio signal. However, components that can be transmitted and received in plural different frequency bands, such as _F j modulation and call transfer, especially those that can perform FM modulation in different desired frequency bands, are not easily available in the market. ^-. For example, although there are also CDs (CDs), which are used as audio for FM modulation in a specific frequency band. Demodulator systems, because they are components for stereo (2-channel) transmission, can only transmit 2 types of sound at the same time Sound signal. Therefore, the frequency band cannot be divided into three channels for simultaneous transmission and reception, and the above system cannot be used to construct a system at low cost. The purpose of the present invention is to provide: In a specific and same space, it is possible to wirelessly transmit more than 3 kinds of audio signals at the same time. At the same time, this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297). (Mm) Printed by the staff of the Intellectual Property Bureau of the Ministry of Economic Affairs, "" i. ..... ·;": ί d Ci: A7 _B7_ V. Description of the invention (3), and it can be implemented at low cost Simultaneous communication system of multiple tones. [Means for solving the problem] The simultaneous communication system of multiple sounds described in item 1 of the scope of patent application is a method of converting sounds into electrical signals and amplifying them according to the signals, modulating them into a carrier of a specific frequency, and then wirelessly The transmission medium sends the transmitter out of the space, and receives the signal sent by the transmitter. After tuning, demodulation, and amplification, the receiver converts the voice signal to the wireless transmission of the audio signal. The system is provided with three or more transmitters with different carrier frequencies, and three or more receivers whose tuning frequencies are consistent with the carrier frequencies of these transmitters, respectively, and can wirelessly transmit and receive simultaneously in a specific and same space.同时 The above-mentioned multiple-voice simultaneous communication system of voice signals is characterized in that the above-mentioned wireless transmission medium is infrared, modulation, and demodulation are AM modulation and demodulation. Each transmitter transmits to the receiver an infrared signal whose carrier frequency of the transmitter's inherent frequency is modulated by audio signals, and the receiver uses an infrared signal to perform a photoelectric conversion signal. The frequency is tuned and AM demodulated to obtain the audio signal of a specific transmitter. Because each transmitter sends infrared signals at different natural frequencies *, it can send and receive more than 3 types of audio signals in the same space. Also * the use of AM modulation and demodulation methods can use inexpensive components. [Implementation Mode of the Invention] (Please read the precautions on the reverse side before filling out this page) Packing ---- line three: Paper size · Applicable to China National Standard (CNS) A4 (210 > = 297 mm) -6-143937 0 Α7 Β7 5. Description of the Invention (4) Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Please read the precautions on the back before filling out this page.) Figure 1 is a block diagram showing one embodiment of a simultaneous communication system of multiple sounds according to the present invention.
在此圖1中，1 i、1 2、·__ 1 η係俾用紅外線作 爲無線傳送媒體，調製方式使用A Μ調製所形成之第1〜 第η發訊機’2i、22' .. .2η係解調方式使甩AM 解調所形成之第1〜第η接收機。 各發訊機（1ι、12、... In)具備由麥克風等 形成之發話器1 a、音聲訊號放大部1 b、載波振盪部 1 c、A Μ調製部1 d以及發光部（紅外線發訊部）1 e 。載波振盪部1 c之振盪頻率（載波頻率）ί每一發訊機 1而不同，此處，發訊機1 1設定爲f 1，發訊機12爲 f2、 ···發訊機In爲fn。 經濟部智慧財產局員工消費合作社印製 上述發話器1 a係將音聲轉換爲電氣訊號（音聲訊號 )s 1 a ，音聲訊號放大部1 b係放大由發話器1 a來之 音聲訊號s 1 a，載波振盪部1 c係產生規定頻率之載波 s1c者。又，AM調製部1d係將載波s1c以由音聲 訊號放大部1 b來之放大音聲訊號s 1 b進行AM調製（ 振幅調製），發光部1 e將由A Μ調製部1 d來之輸出信 號（被調製波）s 1 d轉換爲紅外線訊號I r 1輸出（無 線發訊）者。又，Ir2〜Irη係由第2〜第η發訊機 12〜In (各發光部le)被輸出之紅外線訊號。 各接收機（2: 、22 、 .·，2η)係具備：受光 部（紅外線接收部）2 a、調諧部2 b、A Μ解調部2 c 本紙張尺度適用令國國家標準（CNS)A4規格（210 X 297公釐） 143 93 7 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（5 ) '音聲訊號放大部2 d以及由耳機或揚聲器等形成之受話 器2 e而成者’此處’形成爲無線耳機形式。調諧部2 b 之調諧頻率f在每一接收機2皆不同，此處，接收機2 1 •設定爲fl、接收機22爲f2、...接收機2n爲fn 0 上述受光部2 a接收由發訊機1被輸出之紅外線訊號 Jr (Irl、 Ir2、 ...Irn)，轉換爲電氣訊 號s 2 a，調諧部2 b係由受光部2 a來之電氣訊號 s2a中’只選擇、輸出頻率f 1之電氣訊號（被調製波 )s 2 b 者。 又，AM解調部2 c將由調諧部2 b來之電氣訊號 s2b進行AM解調，輸出AM訊號（音聲訊號）s 2c ’音聲訊號放大部2 d放大由AM解調部2 c來之音聲訊 號s 2 c，受話器2 e係將由音聲訊號放大部1 b來之放 大音聲訊號s 2 d轉換爲音聲以輸出者。 接著，併用圖2、圖3說明上述本發明系統之動作。 此處，說明上述本發明系統被適用於國際會議之音聲 會議系統，將發言者之音聲分別翻譯爲日語.、英語、法語 而分別被輸入第1發訊機li、第2發訊機12、第n發訊 機1 η，於空間被區隔之特定之1會場內可以選擇、收聽 3國之語言之翻譯音聲之情形。 目前，在第1發訊機1 1之發話器1 a —被輸入日語音 聲，該發話器1 a將被輸入之日語音聲轉換爲電氣訊號（ 音聲訊號）s 1 a,。此音聲訊號s 1 a在音聲訊號放大部 (請先閱讀背面之注意事項再填寫本頁) 訂‘-In this FIG. 1, 1 i, 1 2, · __ 1 η system uses infrared as a wireless transmission medium, and the modulation method uses the first to nth transmitters '2i, 22' formed by AM modulation ... The 2η-based demodulation method is the first to n-th receivers formed by demodulating AM. Each transmitter (1, 12, ... In) includes a microphone 1 a formed by a microphone or the like, a sound signal amplifying section 1 b, a carrier oscillation section 1 c, an AM modulation section 1 d, and a light emitting section (infrared Communication Department) 1 e. The oscillating frequency (carrier frequency) of the carrier oscillating part 1 c is different for each transmitter 1. Here, the transmitter 1 1 is set to f 1, the transmitter 12 is set to f 2, ... The transmitter In is set to fn. The above-mentioned microphone 1 a is printed by the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, which converts sound into electrical signals (sound signals) s 1 a, and the sound signal amplification unit 1 b is used to amplify the sound from the microphone 1 a The signal s 1 a and the carrier oscillating part 1 c are those that generate a carrier s 1 c of a predetermined frequency. In addition, the AM modulation section 1d performs AM modulation (amplitude modulation) on the carrier signal s1c with the amplified audio signal s1b from the audio signal amplification section 1b, and the light emitting section 1e outputs from the AM modulation section 1d. The signal (modulated wave) s 1 d is converted into an infrared signal I r 1 output (wireless transmission). In addition, Ir2 to Irη are infrared signals output from the second to nth transmitters 12 to In (each light emitting unit le). Each receiver (2 :, 22, .., 2η) is provided with: a light receiving section (infrared receiving section) 2 a, a tuning section 2 b, and an AM demodulating section 2 c This paper is in accordance with the national standard (CNS) A4 specifications (210 X 297 mm) 143 93 7 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (5) 'Sound signal amplifier 2 d and a receiver 2 made of headphones or speakers, etc. e The creator 'here' is formed in the form of a wireless headset. The tuning frequency f of the tuner 2 b is different for each receiver 2. Here, the receiver 2 1 is set to fl, the receiver 22 is f2, ... the receiver 2n is fn 0. The infrared signal Jr (Irl, Ir2, ... Irn) output from the transmitter 1 is converted into an electrical signal s 2 a, and the tuning section 2 b is an electrical signal s2a from the light receiving section 2 a. The electrical signal (modulated wave) s 2 b of the output frequency f 1. In addition, the AM demodulation unit 2 c performs AM demodulation on the electrical signal s2b from the tuner unit 2 b, and outputs an AM signal (audio signal) s 2c. The audio signal amplification unit 2 d amplifies the signal from the AM demodulation unit 2 c. The sound signal s 2 c and the receiver 2 e are those who convert the amplified sound signal s 2 d from the sound signal amplifier 1 b into a sound for output. Next, the operation of the system according to the present invention will be described with reference to FIGS. 2 and 3. Here, it is explained that the above-mentioned system of the present invention is applied to the voice conference system of an international conference, and the voices of the speakers are translated into Japanese, English, and French, and input to the first transmitter li and the second transmitter, respectively. 12. The n-th transmitter 1 η can select and listen to the translation sounds in the languages of the three countries in a specific venue where the space is divided. At present, the daily voice is input to the microphone 1 a of the first transmitter 11, and the microphone 1 a converts the input voice into the electrical signal (sound signal) s 1 a ,. This audio signal s 1 a is in the audio signal amplification section (please read the precautions on the back before filling this page) Order ‘-
ZM "Μ!Γ 本紙張尺度適用中國國家標準（CNS)A4規格<210 X 297公釐） -8- ί ή 广' 一.『-·· . :.: Α7 ___Β7__ 五、發明說明（6 ) 1 b被放大後，被給予AM調製部1 d。AM調製部1 d 將在載波振盪部1 c被產生之頻率f 1之載波s 1 c以由 上述音聲訊號放大部1b來之放大音聲訊號s1b進行 _ AM調製，給予發光部1 e。發光部1 e將由AM調製部 1 d來之輸出訊號s 1 d轉換爲紅外線訊號I r 1，輸出 於會場內（無線發訊）。 第1接收機2 t係可以收聽日語之可攜式接收機，第1 接收機2 i之受光部2 a接收由發訊機被輸出之紅外線訊號 Ir (Irl、 Ir2、 ·..ΙΓη)將其轉換爲電氣 訊號s 2 a。此電氣訊號s 2 a被給予調諧部2 b，電氣 訊號s 2 a之中’只有頻率f 1之電氣訊號s 2 b被選擇 後，被給予A Μ解調部2 c。A Μ解調部2 c將由調諧部 2 b來之電氣訊號s 2 b進行AM解調，輸出AM訊號（ 音聲訊號）。此音聲訊號s2c在音聲訊號放大部2d被 放大，受話器2 e將由音聲訊號放大部2 b來之放大音聲 訊號s 2 d轉換爲音聲（日語音聲）而輸出。 藉由如此，承借第1接收機2 it期望日語音聲之入場 者可以日語音聲收聽會議內容。 在第2發訊機1 2之發話器1 a —被輸入翻譯成英語之 音聲，第2發訊機1 2與第2發訊機1 i之情形同樣地動作 ，又，第2接收機22也與第1接收機2 :之倩形同樣地動 作，承借第2接收機22之期望英語音聲之入場者可以英語 音聲收聽會議內容。又，圖3中之s 1 a 、s lb、 s 1 c ( f 2 ) 、sld以及I r2係由第2發訊機Is之 本紙張尺度適时國國家標準（CNS)A4規格（21㈣97公髮） Zg~. ' ~ZM " Μ! Γ This paper size is applicable to Chinese National Standard (CNS) A4 specifications < 210 X 297 mm) -8- ί 广 '' I. "-··.:.: Α7 ___ Β7__ 5. Description of the invention ( 6) After 1 b is amplified, it is given to the AM modulation unit for 1 d. The AM modulation section 1 d modulates the carrier s 1 c of the frequency f 1 generated in the carrier oscillation section 1 c with the amplified audio signal s1b from the above-mentioned audio signal amplification section 1b, and gives it to the light emitting section 1e. The light emitting section 1 e converts the output signal s 1 d from the AM modulation section 1 d into an infrared signal I r 1 and outputs it to the conference venue (wireless transmission). The first receiver 2 t is a portable receiver that can listen to Japanese. The light receiving unit 2 a of the first receiver 2 i receives the infrared signals Ir (Irl, Ir2, .. ΙΓη) output by the transmitter. It is converted into an electrical signal s 2 a. This electrical signal s 2 a is given to the tuning section 2 b. Among the electrical signals s 2 a ', only the electrical signal s 2 b of the frequency f 1 is selected and given to the AM demodulation section 2 c. The AM demodulation section 2 c performs AM demodulation on the electrical signal s 2 b from the tuner section 2 b and outputs an AM signal (audio signal). This audio signal s2c is amplified in the audio signal amplification section 2d, and the receiver 2e converts the amplified audio signal s2d from the audio signal amplification section 2b into a sound (Japanese voice) and outputs it. In this way, the borrower 1 receiver 2 it is expected that the participants of the Japanese voice can listen to the conference content by the Japanese voice. In the second transmitter 12, the microphone 1a is input and translated into English, and the second transmitter 12 operates in the same manner as the second transmitter 1i, and the second receiver 22 also operates in the same manner as the first receiver 2: Zhiqian, and those who borrow the desired English sound from the second receiver 22 can listen to the conference content in English sound. In addition, s 1 a, s lb, s 1 c (f 2), sld, and I r2 in FIG. 3 are in accordance with the national standard (CNS) A4 specification (21㈣97 cm) of the paper size of the second transmitter Is. Hair) Zg ~. '~
UM (清先閲讚背面之注意事項再填寫本頁) 」ί !P ---Ί:ίο 裝--------訂 ΜΗ 經濟部智慧財產局員工消費合作社印製 暖4 3 93 7 0 A7 __ B7UM (Please read the notes on the back of the praise first and then fill out this page)》 ί! P --- Ί: ίο Install -------- Order Μ 印 Printing and heating by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 4 3 93 7 0 A7 __ B7
經濟部智慧財產局貝工消費合阼f£&K 五、發明說明（7 ) 發話器la來之電氣訊號（音聲訊號）、由音聲訊號放大 部1 b來之放大音聲訊號、由載波振盪部1 c來之載波、 由AM調製部1 d來之輸出訊號（被調製波）以及由發光 部1 e被輸出之紅外線訊號。 同樣地’在第3發訊機13之發話器1 a —被輸入翻譯 成法語之音聲，承借第3接收機23之期望法語音聲之入場 者可以法語音聲收聽會議內容。 在由各發訊機1 (li、1_2、· . . In)同時發出 紅外線訊號I r ( I r 1、I r 2、. - . I r η )之情 形’各接收機2 (各受光部2 a )成爲接收全部之紅外線 訊號I r。但是’在各接收機2設置分別與各發訊機1之 載波頻率i (f 1、ί2、. . fn)調諧之調諧部 2 b，由受光部2 a來之電氣訊號（全部之藉由紅外線訊 號I r之電氣訊號）s2a之中，只有特定之頻率f之電 氣訊號（被調製波）s 2 b被選擇，在AM解調部2 c被 解調之故，只藉由目的音聲訊號之音聲（爲混訊之音聲） 可以由受話器2 e收聽。 又，在上述實施形態中’雖就本發明系統適用於音聲 會議系統之情形說明之’但是本發明不用說並不限定於此 0 例如，在上述實施形態中，雖以由發訊機1往接收機 2之傳送單方向之音聲訊號之系統說明之，但是，也可以 在各發訊機1 (li、12、..· in)設置接收機2之 機能，或是在接收機2設置發訊機1之機能，以雙方向可 二一 (請先閱讀背面之注意事項再填寫本頁) 裝 MP 一---訂---------续 -Mf-r 本纸張尺度適用中國國家標準（CNS)A4规格（210 X 297公盏） -10- A7 i4 3 93 7 Ο _______B7 五、發明說明（8 ) 以做音聲傳送接收者。 又，各接收機2(2^22、 ·. _2n)雖分別作 (請先閱讀背面之注意事項再填寫本頁) 成個人可以攜帶之可攜式者，但是，也可以如圖1之虛線 所示般地，作爲發/受話器3之一部，將各接收機2之輸 出連接於發受話器3之輸入，由共通之發受話器3例如對 電話線4、場內之揚聲器等輸出各音聲訊號者。 進而，受光部（紅外線接收部）2 a雖以被具備於各 接收機2 ( 2 !、2 2、... 2 η )之例說明之，也可以 爲以複數之接收機2共用者。 【發明之效果】 如以上說明般地，依據本發明，利用紅外線作爲無線 傳送媒體之故，具有可以防it對特i空間外之音聲訊號之 洩漏之效果。 又，調製.解調方式係使甩AM調製.解調之故，具 有可以低成本實現在特定、同一空間內之3種以上之音聲 訊號之同時無線傳送接收之效果。 經濟部智慧財產局員工消費合作社印製 即，如上述般地，在調製.解調方式使用FM調製. 解調之情形，該構件便宜上市者只有立體聲（2頻道）廣 播用之構件之故，以低成本構成之系統只可以同時傳送接 收2種之音聲訊號。但是，如本發明之系統，在調製.解 調方式使用AM調製.解調之情形，該構件可以使用AM 收音機用之便宜之構件。 又，如在AM收音機廣播被進行般地，以中頻帶之低 -11 - 本紙張尺度適用尹國國家標準（CNS)A4規格（210x297公釐） a 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（9 ) 頻率（形成發光部、受光部之主構成之泛用的發光、受光 元件可以充分對應之頻率）在特定、同一空間可以無線傳 送接收3種以上之音聲訊號。因此，如上述般地，可以低 成本地實現在特定、同—空間內之3種以上之音聲訊號之 同時無線傳送接收。 又，依據AM調製解調方式，與依據FM調製·解 調方式之情形相比，音質雖然容易變差1但是在本發明之 系統中，係進行音聲之傳送接收者，可以滿足必要之音質 性能。 【圖面之簡單說明】 圖1係顯示本發明系統之一實施形態之方塊圖。 圖 2，（a) 、( b ) 、( c ) 、( d ) 、( e )、 (f) 、 （g) 、 （h) 、 （i)係圖1中之第1發訊機 、第1接收機之各部信號波形圖。 圖 3， （a) 、（b) 、（c) 、（d) 、（e)係 圖1中之第2發訊機之各部信號波形圖。 【標號之說明】 1 (li、12、. . · In) :發訊機（第1〜第η 發訊機），：La :發話器，lb :音聲訊號放大部，lc :載波振盪部，Id :AM調製部，le :發光部（紅外 線發訊部） 2 ( 2 1 ' 2 2 ' ..,2η):接收機（第1〜第η 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -12- :二 ：p: M-P -二!':Μ Η 二 -: 二-- 1 I 1 1 1, J Ί Ί I I I - I I I — i I f ----I I I f I I I-Γί — — mil---------- (請先閱讀背面之汍意事項再填寫本頁) 五、發明說明（10 ) A7 B7 諧： 訊 M e 線 :2 外 b , 紅 2 部 : ， 大 } } 放 η 部號 r 收訊 I 接聲. 線音 -外： . 紅 d 、 C 2 2 部， Γ 光部 I 受調 、 :解 1 a M r 2 A _„ J . . /IV } c , r 機 2 器 I 收’話 接部受 號 \ily ----------I! — —-訂·--------綠 (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） -13-Co-consumer's Consumption of the Intellectual Property Bureau of the Ministry of Economic Affairs f £ & K V. Description of the Invention (7) Electrical signal (audio signal) from the microphone la, amplified audio signal from the audio signal amplifier 1 b, The carrier wave from the carrier oscillation section 1 c, the output signal (modulated wave) from the AM modulation section 1 d, and the infrared signal output from the light emitting section 1 e. Similarly, the speaker 1a of the third transmitter 13 is inputted and translated into French, and the attendee who borrows the desired French voice from the third receiver 23 can listen to the conference content. When the transmitters 1 (li, 1_2,... In) simultaneously emit infrared signals I r (I r 1, I r 2,.-. I r η) 'each receiver 2 (each light receiving unit 2 a) Receive all infrared signals Ir. However, 'the receiver 2 is provided with a tuning section 2 b which is tuned to the carrier frequency i (f 1, ί2,... Fn) of each transmitter 1, and an electric signal from the light receiving section 2a (all by Among the electrical signals of the infrared signal I r) s2a, only the electrical signal (modulated wave) s 2 b of a specific frequency f is selected, and the demodulation section 2 c is demodulated, so only the target sound is used. The sound of the signal (the sound of a mix) can be heard by the receiver 2e. Also, in the above-mentioned embodiment, "it is explained about the case where the system of the present invention is applicable to an audio conference system", but the present invention is needless to say not limited to this. For example, in the above-mentioned embodiment, the transmitter 1 The system for transmitting a unidirectional audio signal to the receiver 2 is explained, but the function of the receiver 2 can also be set at each transmitter 1 (li, 12, .. · in), or at the receiver 2 Set the function of the transmitter 1, two directions can be two (Please read the precautions on the back before filling this page) Install MP one --- order --------- continued-Mf-r paper Zhang scale is applicable to China National Standard (CNS) A4 specification (210 X 297 male) -10- A7 i4 3 93 7 〇 _______B7 V. Description of the invention (8) To be the recipient of sound transmission. In addition, each receiver 2 (2 ^ 22, ·. _2n) is made separately (please read the precautions on the back before filling in this page) as a portable person who can carry it, but it can also be shown as a dotted line in Figure 1. As shown, as a part of the receiver / receiver 3, the output of each receiver 2 is connected to the input of the receiver 3, and the common receiver 3 outputs various sounds, for example, to a telephone line 4 and a speaker in the field Signaler. Furthermore, although the light receiving section (infrared receiving section) 2a is described as an example provided in each of the receivers 2 (2 !, 22, ... 2n), it may be shared by a plurality of receivers 2. [Effects of the Invention] As explained above, according to the present invention, the use of infrared rays as a wireless transmission medium has the effect of preventing leakage of it to sound signals outside the special i-space. In addition, the modulation and demodulation method enables AM modulation and demodulation to have the effect of wirelessly transmitting and receiving three or more types of audio signals in a specific and same space at low cost. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, that is, as described above, in the case of modulation and demodulation using FM modulation. Demodulation, this component is cheaper and only listed for stereo (2-channel) broadcasting, A low-cost system can transmit and receive only two types of audio signals at the same time. However, in the case of the system of the present invention, in the case of using AM modulation and demodulation in the modulation, demodulation mode, the component can use the cheap component of the AM radio. In addition, as in the AM radio broadcast, the low of the mid-band is -11-This paper size applies Yin National Standard (CNS) A4 specification (210x297 mm) a Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (9) Frequency (the frequency of the general-purpose light-emitting and light-receiving elements that form the main part of the light-emitting part and the light-receiving part can fully correspond to). It can wirelessly transmit and receive more than three kinds of audio signals in a specific and same space. Therefore, as described above, it is possible to realize low-cost simultaneous transmission and reception of three or more types of audio signals in a specific and same space. In addition, according to the AM modulation and demodulation method, the sound quality is easily deteriorated compared to the case of the FM modulation and demodulation method. However, in the system of the present invention, the transmission and reception of the sound can meet the necessary sound quality performance. [Brief description of the drawing] Fig. 1 is a block diagram showing an embodiment of the system of the present invention. Figure 2, (a), (b), (c), (d), (e), (f), (g), (h), (i) are the first transmitter, 1 Signal waveform diagram of each part of the receiver. Fig. 3, (a), (b), (c), (d), (e) are the waveform diagrams of the signals of each part of the second transmitter in Fig. 1. [Description of labels] 1 (li, 12,.. · In): transmitter (1st to η transmitters): La: speaker, lb: audio signal amplifier, lc: carrier oscillator , Id: AM modulation part, le: Light emitting part (infrared transmitting part) 2 (2 1 '2 2' .., 2η): Receiver (1st to η This paper standard applies Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) -12-: two: p: MP-two! ': Μ Η two-: two-1 I 1 1 1, J Ί Ί III-III — i I f ---- III f II I-Γί — — mil ---------- (Please read the notice on the back before filling in this page) V. Description of the invention (10) A7 B7 Harmony: Xun M e Line: 2 Outer b, red 2 parts:, big}} put η part number r receiving I answer. Line tone-outer:. Red d, C 2 2 parts, Γ light part I adjusted,: solution 1 a M r 2 A _ „J.. / IV} c, r machine 2 and device I receive 'receiving department receiving number \ ily ---------- I! — --- order · -------- Green (Please read the notes on the back before filling out this page) Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Employee Consumer Cooperatives This paper is sized to the Chinese National Standard (CNS) A4 (210 X 297 mm ) -13-