JPH03198529A - Radio transmitter-receiver - Google Patents
Radio transmitter-receiverInfo
- Publication number
- JPH03198529A JPH03198529A JP1339103A JP33910389A JPH03198529A JP H03198529 A JPH03198529 A JP H03198529A JP 1339103 A JP1339103 A JP 1339103A JP 33910389 A JP33910389 A JP 33910389A JP H03198529 A JPH03198529 A JP H03198529A
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- 230000006854 communication Effects 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000005236 sound signal Effects 0.000 claims description 66
- 230000002194 synthesizing effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 230000015572 biosynthetic process Effects 0.000 abstract description 8
- 238000003786 synthesis reaction Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000010356 wave oscillation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は無線送受信装置に関し、特に無線高周波部と変
復調部とが分かれて構成される無線送受信装置に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wireless transmitting/receiving device, and more particularly to a wireless transmitting/receiving device in which a wireless high frequency section and a modulation/demodulation section are separated.
従来、この種の無線送受信装置では、無線高周波部を屋
外に設置し、変復調部を屋内に設置して両者の間を信号
ケーブルで接続しているため、無線高周波部と変復調部
との間に打合せ線を設ける必要がある。この無線高周波
部と変復調部との間の打合せ線は、無線高周波部から変
復調部へ向かう打合せ線と、変復部から無線高周波部へ
向かう打合せ線とをそれぞれ異なる高周波の搬送波によ
る振幅変調によって通信を行っていた。Conventionally, in this type of wireless transmitter/receiver, the wireless high frequency section is installed outdoors, the modulation/demodulation section is installed indoors, and the two are connected by a signal cable. It is necessary to establish a meeting line. The communication line between the radio high frequency section and the modulation/demodulation section is one that goes from the radio high frequency section to the modulation/demodulation section, and the other one that goes from the modulation section to the radio high frequency section, through amplitude modulation using different high frequency carrier waves. was going on.
第２図は従来の無線送受信装置における打合せ線の通信
方法である。送信側変復調部１から送信側無線高周波部
５への打合せ線は、変復調部の打合せ線の音声信号をｆ
ｌなる周波数の搬送波で振幅変調して受信側無線高周波
部５へ送り、この受信側無線高周波部５では送信側変復
調部１から送られてきた振幅変調波成分のみを通す帯域
通過フィルタを通して復調される。FIG. 2 shows a meeting line communication method in a conventional wireless transmitting/receiving device. The meeting line from the transmitting side modem section 1 to the transmitting side radio high frequency section 5 transmits the audio signal on the meeting line of the modem section to f.
The signal is amplitude modulated with a carrier wave having a frequency of 1 and sent to the receiving radio high frequency section 5, where it is demodulated through a band pass filter that passes only the amplitude modulated wave component sent from the transmitting modem section 1. Ru.
また、逆に送信側無線高周波部５から送信側変復調部１
への打合せ線は、送信側無線高周波部５の打合せ線の音
声信号をｆｌと異なる周波数ｆ２の搬送波で振幅変調し
て送信側変復調部１へ送り、送信側変復調部１では送信
側無線高周波部５から送られてきた振幅変調波成分のみ
を通す帯域通過フィルタを通して復調する。In addition, conversely, from the transmitting side wireless high frequency section 5 to the transmitting side modulation/demodulation section 1
The meeting line to the transmission side radio high frequency unit 5 amplitude modulates the audio signal on the meeting line with a carrier wave of a frequency f2 different from fl and sends it to the transmission side modulation/demodulation unit 1. It is demodulated through a bandpass filter that passes only the amplitude modulated wave component sent from 5.
この方法は、受信側無線高周波部２２と受信側変復調部
２４との間の打合せ線の通信方法についても同じである
。This method is also the same for the communication method of the meeting line between the receiving side radio high frequency section 22 and the receiving side modulation/demodulation section 24.
なお、符号７．２１はそれぞれアンテナを示している。Note that numerals 7 and 21 each indicate an antenna.
上述した従来の打合せ線の通信方法では、主信号（ＴＶ
信号、主音声信号）の伝送路に打合せ線の伝送路が接続
されていないために、送信側、受信側では、それぞれの
無線高周波部と変復調部との間での打合せ線通信は可能
であるが、送信側と受信側との間での打合せ線通信がで
きないという問題がある。In the conventional meeting line communication method described above, the main signal (TV
Since the transmission line of the meeting line is not connected to the transmission line of the signal (main audio signal, main audio signal), meeting line communication is possible between the radio high frequency section and the modulation/demodulation section on the transmitting and receiving sides. However, there is a problem in that meeting line communication between the sending side and the receiving side is not possible.
本発明の目的は、送信側と受信側との間での打合せ通信
を可能にした無線送受信装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a wireless transmitting/receiving device that enables meeting communication between a transmitting side and a receiving side.
本発明の無線送受信装置は、送信側にはその変復調部か
ら無線高周波部へ送出する打合せ線音声信号、及び無線
高周波部から送出されて変復調部で受信された打合せ線
音声信号を合成する回路と、主音声信号と打合せ線音声
信号とを切り替えるスイッチを有している。また、受信
側にはその変復調部に主音声信号と送信側から送信され
た打合せ線音声信号とを切り替えるスイッチと、無線高
周波部と変復調部の間の打合せ線音声信号、及び送信側
から送信された打合せ線音声信号を合成する回路とを有
している。The wireless transmitting/receiving device of the present invention includes a circuit on the transmitting side for synthesizing a meeting line audio signal sent from the modulation/demodulation section to the radio high frequency section and a meeting line audio signal sent from the radio high frequency section and received by the modulation/demodulation section. , has a switch for switching between the main audio signal and the meeting line audio signal. In addition, on the receiving side, there is a switch in the modem section that switches between the main audio signal and the meeting line audio signal transmitted from the transmitting side, and a switch that switches between the main audio signal and the meeting line audio signal transmitted from the transmitting side, and the meeting line audio signal between the radio high frequency section and the modem section, and the meeting line audio signal transmitted from the transmitting side. and a circuit for synthesizing meeting line audio signals.
（作用〕
この構成では、打合せ線音声信号を、無線により送信側
から受信側に送信することができ、送信側と受信側との
間での打ち合わせを可能とする。(Function) With this configuration, the meeting line audio signal can be wirelessly transmitted from the transmitting side to the receiving side, making it possible to have a meeting between the transmitting side and the receiving side.
次に、本発明を図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例を示しており、無線高周波部
と変復調部は異なる２つの周波数ｆｌ。FIG. 1 shows an embodiment of the present invention, in which the radio high frequency section and the modulation/demodulation section have two different frequencies fl.
ｆ、を振幅変調して伝送し、かつこれを復調することで
双方向で打合せ線の通信ができるように構成されている
。By amplitude modulating and transmitting f, and demodulating this, bidirectional communication on the meeting line is possible.
第１図（ａ）は送信側を示すブロック図である。FIG. 1(a) is a block diagram showing the transmitting side.
送信側変復調部１は、入力されるＴＶ信号を、ＴＶ・音
声信号合成回路２において主音声信号と合成される。こ
の主音声信号は切替スイッチ１０及び周波数変調回路８
を通して前記ＴＶ信号に合成される。合成された主信号
は周波数変調回路３で周波数変調され、主信号帯高域通
過フィルタ４ａを通してケーブルＣ１に送出する。In the transmitting side modulation/demodulation section 1, the input TV signal is synthesized with a main audio signal in a TV/audio signal synthesis circuit 2. This main audio signal is transmitted to the selector switch 10 and the frequency modulation circuit 8.
and is combined into the TV signal. The synthesized main signal is frequency modulated by the frequency modulation circuit 3, and sent to the cable C1 through the main signal band high-pass filter 4a.
送信側無線高周波部５では、ケーブルＣ１で伝送された
主信号を主信号帯高域フィルタ４ｂを通し、無線周波数
帯への周波数変換回路６で無線周波数にした上で送信ア
ンテナ７から送信する。In the transmitting radio high frequency unit 5, the main signal transmitted through the cable C1 is passed through the main signal band high-pass filter 4b, converted to a radio frequency by a frequency conversion circuit 6 to a radio frequency band, and then transmitted from the transmitting antenna 7.
一方、打合せに関しては、前記送信側変復調部１では、
打合せ線音声信号は増幅回路１１ａで増幅した上で、周
波数ｆ、の搬送波用発振回路１３の搬送波によって振幅
変調回路１４において振幅変調され、打合せ信号帯帯域
通過フィルタ１６ａを通してケーブルＣ７に送出する。On the other hand, regarding the meeting, the transmitting side modulation/demodulation section 1:
The meeting line audio signal is amplified by the amplifier circuit 11a, then amplitude modulated by the carrier wave of the carrier wave oscillation circuit 13 having a frequency f in the amplitude modulation circuit 14, and sent to the cable C7 through the meeting signal band pass filter 16a.
送信側無線高周波部５では、ケーブルＣ７で伝送された
打合せ信号は打合せ信号帯帯域通過フィルタ１６ｂ及び
帯域通過フィルタ１７を通した後、振幅復調回路２０で
復調し、増幅回路１１ｃで増幅して打合せ線音声信号出
力を得る。In the transmitting side radio high frequency section 5, the meeting signal transmitted by the cable C7 passes through the meeting signal band band pass filter 16b and the band pass filter 17, is demodulated by the amplitude demodulation circuit 20, is amplified by the amplifier circuit 11c, and is sent to the meeting signal. Get line audio signal output.
他方、送信側無線高周波部５からの打合せ線音声信号は
、増幅回路ｌｉｄで増幅した上で、周波数ｆｔの搬送波
用発振回路１８の搬送波によって振幅変調回路１９にお
いて振幅変調され、打合・せ信号帯帯域通過フィルタ１
６ｂを通してケーブルＣアに送出する。On the other hand, the meeting line audio signal from the transmitting side radio high frequency unit 5 is amplified by the amplifier circuit lid, and then amplitude modulated by the carrier wave of the carrier wave oscillation circuit 18 of frequency ft in the amplitude modulation circuit 19, and the meeting line audio signal is converted into a meeting line audio signal. band pass filter 1
6b to cable CA.
送信側変復調部１では、ケーブルＣＴで伝送された打合
せ信号は打合せ信号帯帯域通過フィルタ１６ａ及び帯域
通過フィルタ１５を通した後、振幅復調回路１２で復調
し、増幅回路１１ｂで増幅して打合せ線音声信号出力を
得ている。In the transmitting side modulation/demodulation unit 1, the meeting signal transmitted by the cable CT passes through the meeting signal band band pass filter 16a and the band pass filter 15, is demodulated by the amplitude demodulation circuit 12, is amplified by the amplifier circuit 11b, and is sent to the meeting line. Obtaining audio signal output.
これにより、送信側変復調部１と送信側無線高周波部５
との間の打ち合わせが行われる。As a result, the transmitting side modulation/demodulation section 1 and the transmitting side radio high frequency section 5
A meeting will be held between.
更に、前記送信側変復調部１には打合せ線音声信号合成
回路９を設けており、これで無線高周波部５へ送る打合
せ線の音声信号と無線高周波部５から受ける打合せ線の
音声信号を合成することができる。この合成した音声信
号は、前記切替スイッチ１０によって主音声信号と切り
替えられる。Further, the transmitting side modulation/demodulation section 1 is provided with a meeting line audio signal synthesis circuit 9, which synthesizes the meeting line audio signal sent to the wireless high frequency section 5 and the meeting line audio signal received from the wireless high frequency section 5. be able to. This synthesized audio signal is switched to the main audio signal by the changeover switch 10.
したがアて、打合せ線音声の伝送に際しては、切替スイ
ッチｌＯを打合せ線側に切り替えることで、送信側無線
高周波部５へ送出する音声信号と、送信側無線高周波部
５から受ける音声信号とが合成された音声信号は主音声
信号と切替えられて主信号伝送路に送られ、周波数変調
回路８で周波数変調され、ＴＶ・音声信号合成回路２に
おいてＴＶ信号と合成される。合成された信号は上述し
た主信号の場合と同様にして送信側無線高周波部５へ送
られ、ここで無線高周波帯に周波数変換されて受信側に
向けて送信される。Therefore, when transmitting meeting line audio, by switching the changeover switch IO to the meeting line side, the audio signal sent to the transmitting side wireless high frequency section 5 and the audio signal received from the transmitting side wireless high frequency section 5 can be changed. The synthesized audio signal is switched with the main audio signal and sent to the main signal transmission path, frequency modulated by the frequency modulation circuit 8, and synthesized with the TV signal in the TV/audio signal synthesis circuit 2. The synthesized signal is sent to the transmitting side wireless high frequency section 5 in the same manner as the main signal described above, where it is frequency-converted to a wireless high frequency band and transmitted to the receiving side.
第１図（ｂ）は受信側を示すブロック図である。FIG. 1(b) is a block diagram showing the receiving side.
受信側無線高周波部２２では、受信アンテナ２１で受信
した信号を、周波数変換回路２３で中間周波数に周波数
変換し、主信号帯高域通過フィルタ４ｂを通した上で、
ケーブルＣ１Ｉを通して受信側変復調部２４に送出する
。In the receiving-side radio high-frequency section 22, the signal received by the receiving antenna 21 is frequency-converted to an intermediate frequency by the frequency conversion circuit 23, passed through the main signal band high-pass filter 4b, and then
The signal is sent to the receiving side modulation/demodulation section 24 through the cable C1I.
受信側変復調部２４では、周波数復調回路２５で復調し
、ＴＶ・音声信号分離回路２６でＴＶ信号と音声信号を
分離する。また、音声信号は周波数復調回路２７及び切
替スイッチ２９を通して出力させる。In the receiving side modulation/demodulation section 24, a frequency demodulation circuit 25 demodulates the signal, and a TV/audio signal separation circuit 26 separates the TV signal and audio signal. Further, the audio signal is outputted through the frequency demodulation circuit 27 and the changeover switch 29.
打合せ線音声信号に関しては、送信側と略同じ構成であ
り、均等な部分には同一符号を付して詳細な説明は省略
する。但し、受信側変復調部２４では、打合せ線音声信
号合成回路２８ａ、２８ｂを設け、切替スイッチ２９か
らの音声信号を打合せ線音声信号に合成するように構成
している。As for the meeting line audio signal, it has substantially the same configuration as the transmitting side, and identical parts are given the same reference numerals and detailed explanation will be omitted. However, the receiving side modulation/demodulation section 24 is provided with meeting line audio signal synthesis circuits 28a and 28b, and is configured to synthesize the audio signal from the changeover switch 29 into the meeting line audio signal.
この構成によれば、送信側から送信された打合せ音声信
号は、受信側無線高周波部２２において受信され、ここ
で中間周波数帯に周波数変換されて受信側変復調部２４
へ送られる。送られた中間周波数帯の信号は復調された
上でＴＶ信号と音声信号とに分離され、分離された音声
信号は復調され、切替スイッチ２９によって主信号の音
声信号出力と切替えられる。そして、この打合せ音声信
号は、受信側無線高周波部２２から受けた打合せ音声信
号と合成され、また受信側無線高周波部２２に送出する
打合せ音声信号と合成され、これにより受信側無線高周
波部２２と受信側変復調部２４との間の打ち合わせが行
われる。According to this configuration, the meeting audio signal transmitted from the transmitting side is received by the receiving side wireless high frequency section 22, where it is frequency-converted to an intermediate frequency band, and is frequency-converted to the receiving side modulation/demodulation section 24.
sent to. The sent intermediate frequency band signal is demodulated and separated into a TV signal and an audio signal, and the separated audio signal is demodulated and switched to the audio signal output of the main signal by a changeover switch 29. This meeting audio signal is synthesized with the meeting audio signal received from the receiving side wireless high frequency section 22, and is also synthesized with the meeting audio signal sent to the receiving side wireless high frequency section 22. A meeting is held with the receiving side modulation/demodulation section 24.
なお切替スイッチ１０．２９の切替えは、打合せ線の音
声信号を伝送する時と、主信号の音声信号を伝送する時
とで送信側と受信側で同時に切替えるものとする。It is assumed that the changeover switch 10.29 is switched at the same time on the transmitting side and the receiving side when transmitting the audio signal of the meeting line and when transmitting the audio signal of the main signal.
〔発明の効果］
以上説明したように本発明は、送信側及び受信側の各変
復調部に設けた切替スイッチにより主音声信号と打合せ
線音声信号とを切替え、この打合せ音声信号を無線によ
り送信できるように構成しているので、送信側と受信側
の離れた２地点間で無線信号を通して打合せ線の通信を
実現することができる効果がある。[Effects of the Invention] As explained above, the present invention can switch between a main audio signal and a meeting line audio signal using a changeover switch provided in each modulation/demodulation section on the transmitting side and receiving side, and can transmit this meeting audio signal wirelessly. With this configuration, there is an effect that communication on a meeting line can be realized between two distant points on the transmitting side and the receiving side through wireless signals.
第１図は本発明の無線送受信装置の一実施例を示し、同
図（ａ）は送信側のブロック図、同図（ｂ）は受信側の
ブロック図、第２図は従来の無線送受信装置の送信側及
び受信側の概略構成図である。
１・・・送信側変復調部、２・・・ＴＶ・音声信号合成
回路、３・・・周波数変調回路、４ａ、４ｂ・・・主信
号帯高域通過フィルタ、５・・・送信側無線高周波部、
６・・・周波数変換回路、７・・・送信アンテナ、訃・
・周波数変調回路、９・・・打合せ線音声信号合成回路
、１０・・・切替スイッチ、１ｌａ−１ｉｄ・・・増幅
回路、１２・・・振幅復調回路、１３・・・搬送波用発
振回路、１４・・・振幅変調回路、１５・・・帯域通過
フィルタ、１６ａ、１６ｂ・・・打合せ線信号帯帯域通
過フィルタ、１７・・・帯域通過フィルタ、１８・・・
搬送波用発振回路、１９・・・振幅変調回路、２０・・
・振幅復調回路、２１・・・受信アンテナ、２２・・・
受信側無線高周波部、２３・・・周波数変換回路、２４
・・・受信側変復調回路、２５・・・周波数復調回路、
２６・・・ＴＶ・音声信号分離回路、２７・・・周波数
復調回路、２８ａ、２８ｂ・・・打合せ線音声信号合成
回路、２９・・・切替スイッチ。FIG. 1 shows an embodiment of the wireless transmitting/receiving device of the present invention, FIG. 1(a) is a block diagram of the transmitting side, FIG. 1(b) is a block diagram of the receiving side, and FIG. 2 is a conventional wireless transmitting/receiving device. FIG. 2 is a schematic configuration diagram of a transmitting side and a receiving side. DESCRIPTION OF SYMBOLS 1... Transmission side modulation/demodulation section, 2... TV/audio signal synthesis circuit, 3... Frequency modulation circuit, 4a, 4b... Main signal band high-pass filter, 5... Transmission side wireless high frequency Department,
6... Frequency conversion circuit, 7... Transmission antenna,
- Frequency modulation circuit, 9... Meeting line audio signal synthesis circuit, 10... Changeover switch, 1la-1id... Amplification circuit, 12... Amplitude demodulation circuit, 13... Carrier wave oscillation circuit, 14 ... Amplitude modulation circuit, 15... Band pass filter, 16a, 16b... Meeting line signal band band pass filter, 17... Band pass filter, 18...
Carrier wave oscillation circuit, 19...amplitude modulation circuit, 20...
- Amplitude demodulation circuit, 21... receiving antenna, 22...
Receiving side radio high frequency section, 23... Frequency conversion circuit, 24
... Receiving side modulation/demodulation circuit, 25... Frequency demodulation circuit,
26... TV/audio signal separation circuit, 27... Frequency demodulation circuit, 28a, 28b... Meeting line audio signal synthesis circuit, 29... Changeover switch.
Claims (1)
調部と無線高周波部で構成され、これら変復調部と無線
高周波部との間で打合せ線通信を行うようにした無線送
受信装置において、送信側にはその変復調部から無線高
周波部へ送出する打合せ線音声信号、及び無線高周波部
から送出されて変復調部で受信された打合せ線音声信号
を合成する回路と、主音声信号と打合せ線音声信号とを
切り替えるスイッチを有し、受信側にはその変復調部に
主音声信号と送信側から送信された打合せ線音声信号と
を切り替えるスイッチと、無線高周波部と変復調部の間
の打合せ線音声信号、及び送信側から送信された打合せ
線音声信号を合成する回路とを有することを特徴とする
無線送受信装置。1. In a wireless transmitting/receiving device in which each of the transmitting side and the receiving side is composed of a modulation/demodulation section and a wireless high frequency section installed separately, and communication is carried out between the modulation/demodulation section and the wireless high frequency section, the transmitting side includes a circuit for synthesizing the meeting line audio signal sent from the modulation/demodulation section to the radio high frequency section and the meeting line audio signal sent from the radio high frequency section and received by the modulation/demodulation section, and a main audio signal and the meeting line audio signal. The receiving side has a switch for switching between the main audio signal and the meeting line audio signal transmitted from the transmitting side, and the meeting line audio signal between the radio high frequency section and the modulating/demodulating section, and 1. A wireless transmitting/receiving device comprising: a circuit for synthesizing meeting line audio signals transmitted from a transmitting side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1339103A JPH03198529A (en) | 1989-12-27 | 1989-12-27 | Radio transmitter-receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1339103A JPH03198529A (en) | 1989-12-27 | 1989-12-27 | Radio transmitter-receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03198529A true JPH03198529A (en) | 1991-08-29 |
Family
ID=18324291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1339103A Pending JPH03198529A (en) | 1989-12-27 | 1989-12-27 | Radio transmitter-receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03198529A (en) |
-
1989
- 1989-12-27 JP JP1339103A patent/JPH03198529A/en active Pending
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