JPH0273845U - - Google Patents
Info
- Publication number
- JPH0273845U JPH0273845U JP1988153660U JP15366088U JPH0273845U JP H0273845 U JPH0273845 U JP H0273845U JP 1988153660 U JP1988153660 U JP 1988153660U JP 15366088 U JP15366088 U JP 15366088U JP H0273845 U JPH0273845 U JP H0273845U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pulse frequency
- modulating
- transmission power
- phase
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Optical Communication System (AREA)
Description
第１図はこの考案の一実施例に係るレーザ光通
信装置を説明するための構成図、第２図は上記実
施例装置において用いられる信号波形を示す図、
第３図は従来の通信装置において用いられる信号
波形を示す図である。
１１……パルス周波数（ＰＦＭ）変調回路、１
２……相反転回路、１３……光送信回路、１４…
…光受信回路、１５……復調回路、１６……捕捉
追尾制御回路。
FIG. 1 is a configuration diagram for explaining a laser beam communication device according to an embodiment of this invention, and FIG. 2 is a diagram showing signal waveforms used in the device of the above embodiment.
FIG. 3 is a diagram showing signal waveforms used in a conventional communication device. 11...Pulse frequency (PFM) modulation circuit, 1
2... Phase inversion circuit, 13... Optical transmission circuit, 14...
...Optical receiving circuit, 15... Demodulation circuit, 16... Acquisition tracking control circuit.
Claims (1)
、 このパルス周波数変調された信号の相を反転す
る手段と、 この相反転された信号に基づきレーザ光を変調
し、光送信する手段とを具備し、 信号の伝送電力の平均電力レベルが、上記伝送
電力のピーク電力に近い値に設定されるようにし
たことを特徴とするレーザ光通信装置。[Claims for Utility Model Registration] Means for pulse frequency modulating a signal to be transmitted; means for inverting the phase of this pulse frequency modulated signal; modulating a laser beam based on this phase inverted signal; What is claimed is: 1. A laser optical communication device comprising: means for transmitting a signal, wherein the average power level of the transmission power of the signal is set to a value close to the peak power of the transmission power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988153660U JPH0722913Y2 (en) | 1988-11-26 | 1988-11-26 | Laser light communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988153660U JPH0722913Y2 (en) | 1988-11-26 | 1988-11-26 | Laser light communication device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0273845U true JPH0273845U (en) | 1990-06-06 |
| JPH0722913Y2 JPH0722913Y2 (en) | 1995-05-24 |
Family
ID=31429702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988153660U Expired - Lifetime JPH0722913Y2 (en) | 1988-11-26 | 1988-11-26 | Laser light communication device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722913Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55154822A (en) * | 1979-05-23 | 1980-12-02 | Mitsubishi Electric Corp | Operation confirming circuit for voltage-frequency converter |
-
1988
- 1988-11-26 JP JP1988153660U patent/JPH0722913Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55154822A (en) * | 1979-05-23 | 1980-12-02 | Mitsubishi Electric Corp | Operation confirming circuit for voltage-frequency converter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0722913Y2 (en) | 1995-05-24 |
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