JPH02101643U - - Google Patents
Info
- Publication number
- JPH02101643U JPH02101643U JP1989011163U JP1116389U JPH02101643U JP H02101643 U JPH02101643 U JP H02101643U JP 1989011163 U JP1989011163 U JP 1989011163U JP 1116389 U JP1116389 U JP 1116389U JP H02101643 U JPH02101643 U JP H02101643U
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- pair
- receiver
- frequencies
- local oscillation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Description
第１図は本考案の一実施例の電気回路図、第２
図は第１図の実施例における周波数を示す図であ
る。
１……送信機、２……受信機、３……左の音響
信号源、７……右の音響信号源、６，１０……変
調回路、１１……発振回路、１８，１９……フイ
ルタ、３４，３５……混合回路、３６，３７……
局部発振回路、４３，４４……中間周波増幅およ
び変調を行う回路。
Fig. 1 is an electrical circuit diagram of one embodiment of the present invention;
The figure is a diagram showing frequencies in the embodiment of FIG. 1. 1... Transmitter, 2... Receiver, 3... Left acoustic signal source, 7... Right acoustic signal source, 6, 10... Modulation circuit, 11... Oscillation circuit, 18, 19... Filter , 34, 35... mixed circuit, 36, 37...
Local oscillation circuit, 43, 44...A circuit that performs intermediate frequency amplification and modulation.
Claims (1)
および第２搬送波周波数信号と、もう１つの対を
成す第３および第４搬送波周波数信号とを、切換
えて変調して送信し、第１〜第４搬送波周波数は
相互に異なつている、そのような送信機と、 スーパヘテロダイン方式で受信する受信機であ
つて、一方の対を成す第１および第２搬送波周波
数よりも高い第１局部発振周波数と、低い第２局
部発振周波数とをそれぞれ定めて第１および第２
搬送波周波数信号をそれぞれ受信し、また他方の
対を成す第３および第４搬送波周波数よりも高い
第３局部発振周波数と、低い第４局部発振周波数
とをそれぞれ定めて第３および第４搬送波周波数
信号をそれぞれ受信し、左右の各音響信号のいず
れか一方に対応する第１または第３搬送波周波数
信号の中間周波数は等しく、また左右の各音響信
号のいずれか他方に対応する第２または第４搬送
波周波数信号の中間周波数は等しく定められる、
そのような受信機とを含むことを特徴とするワイ
ヤレス通信装置。 (2) 前記送信機と前記受信機とには、送受信中
の前記各対を表示する手段を設けることを特徴と
する実用新案登録請求の範囲第１項記載のワイヤ
レス通信装置。[Claims for Utility Model Registration] (1) By each of the left and right acoustic signals, the first
and the second carrier frequency signal and another pair of third and fourth carrier frequency signals are switched and modulated and transmitted, and the first to fourth carrier frequencies are different from each other. a transmitter; and a receiver that receives data in a superheterodyne manner, the receiver having a first local oscillation frequency that is higher than the first and second carrier frequencies of one pair, and a second local oscillation frequency that is lower than the first and second carrier frequencies of the pair. 1st and 2nd
receiving the carrier frequency signals, respectively, and determining a third local oscillation frequency higher than the third and fourth carrier frequencies of the other pair, and a fourth local oscillation frequency lower than the other pair, respectively, to generate the third and fourth carrier frequency signals. are received, the intermediate frequencies of the first or third carrier frequency signal corresponding to either one of the left and right acoustic signals are equal, and the second or fourth carrier wave corresponding to the other of the left and right acoustic signals. The intermediate frequencies of frequency signals are defined equally,
A wireless communication device comprising such a receiver. (2) The wireless communication device according to claim 1, wherein the transmitter and the receiver are provided with means for displaying each pair that is being transmitted and received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989011163U JPH02101643U (en) | 1989-01-31 | 1989-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989011163U JPH02101643U (en) | 1989-01-31 | 1989-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02101643U true JPH02101643U (en) | 1990-08-13 |
Family
ID=31219473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989011163U Pending JPH02101643U (en) | 1989-01-31 | 1989-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02101643U (en) |
-
1989
- 1989-01-31 JP JP1989011163U patent/JPH02101643U/ja active Pending
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