JPS6468037A - Infrared fm space transmission equipment - Google Patents
Infrared fm space transmission equipmentInfo
- Publication number
- JPS6468037A JPS6468037A JP62224841A JP22484187A JPS6468037A JP S6468037 A JPS6468037 A JP S6468037A JP 62224841 A JP62224841 A JP 62224841A JP 22484187 A JP22484187 A JP 22484187A JP S6468037 A JPS6468037 A JP S6468037A
- Authority
- JP
- Japan
- Prior art keywords
- band
- signal
- gain difference
- frequency characteristics
- light reception
- 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
Landscapes
- Optical Communication System (AREA)
Abstract
PURPOSE:To improve the distortion rate of a demodulated signal by providing a band stop filter having frequency characteristics, which cancel the gain difference in a band of the frequency characteristics which a tuning light reception part has, on the reception side. CONSTITUTION:A band stop filter 26 having the frequency characteristics which cancel the gain difference in the band of the frequency characteristic which a tuning light reception part 22 has is provided on the reception side. That is, when FM infrared rays subjected to space transmission are received on the reception side, the output signal of the tuning light reception part 22 is the FM signal including an AM component because the frequency characteristics of the tuning light reception part 22 has the gain difference in the band. This FM signal is inputted to the band stop filter 26, which has the characteristics which cancels the gain difference in the band, and has the AM component eliminated and is demodulated to a data signal by a demodulating part 23. Thus, the AM component of the reception FM signal is eliminated to improve the distortion rate of the demodulated signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224841A JPS6468037A (en) | 1987-09-08 | 1987-09-08 | Infrared fm space transmission equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224841A JPS6468037A (en) | 1987-09-08 | 1987-09-08 | Infrared fm space transmission equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6468037A true JPS6468037A (en) | 1989-03-14 |
Family
ID=16820014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62224841A Pending JPS6468037A (en) | 1987-09-08 | 1987-09-08 | Infrared fm space transmission equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6468037A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5602670A (en) * | 1994-10-26 | 1997-02-11 | Rheem Manufacturing Company | Optical data receiver employing a solar cell resonant circuit and method for remote optical data communication |
-
1987
- 1987-09-08 JP JP62224841A patent/JPS6468037A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5602670A (en) * | 1994-10-26 | 1997-02-11 | Rheem Manufacturing Company | Optical data receiver employing a solar cell resonant circuit and method for remote optical data communication |
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