JPS6416150A - Space propagation optical data transmission and reception system - Google Patents
Space propagation optical data transmission and reception systemInfo
- Publication number
- JPS6416150A JPS6416150A JP62171275A JP17127587A JPS6416150A JP S6416150 A JPS6416150 A JP S6416150A JP 62171275 A JP62171275 A JP 62171275A JP 17127587 A JP17127587 A JP 17127587A JP S6416150 A JPS6416150 A JP S6416150A
- Authority
- JP
- Japan
- Prior art keywords
- data
- signal
- optical
- output
- receiver
- 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
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Optical Communication System (AREA)
Abstract
PURPOSE:To discriminate and receive a transmission data signal with a high selectivity by transmitting an original signal of a clock for data signal and a carrier as the reference of data transmission to the data transmitter side from the data receiver side. CONSTITUTION:An output A (original signal) of an oscillator 1 is converted to an optical signal A' on the side of a data receiver 100, and this signal is inputted to an optical receiver 3 of a data transmitter 200 by space propagation to output a signal A'' having the same repeat frequency as the output A of the oscillator 1. The signal A'' has the frequency divided by a frequency divider 6 and is outputted as a carrier B', and the signal A'' has the frequency divided by a frequency divider 7 and is outputted as a clock C'. Data stored in a data memory 13 is read out as transmission data D by the clock C'. The carrier B' is modulated in a data modulator 12 by transmission data D, and a modulation output E is converted to an optical signal E' by an optical transmitter 11 and is sent to the data receiver 100. In the data receiver 100, the optical signal E' is converted to an electric signal E'' by an optical receiver 10, and the electric signal E'' is detected and demodulated in a synchronous detector 9 by a reference wave C which is generated by dividing the frequency of the output A of the oscillator 1 by a frequency divider 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62171275A JPS6416150A (en) | 1987-07-10 | 1987-07-10 | Space propagation optical data transmission and reception system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62171275A JPS6416150A (en) | 1987-07-10 | 1987-07-10 | Space propagation optical data transmission and reception system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6416150A true JPS6416150A (en) | 1989-01-19 |
Family
ID=15920305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62171275A Pending JPS6416150A (en) | 1987-07-10 | 1987-07-10 | Space propagation optical data transmission and reception system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6416150A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5422526A (en) * | 1993-01-07 | 1995-06-06 | Toyota Jidosha Kabushiki Kaisha | Motor coil structure |
-
1987
- 1987-07-10 JP JP62171275A patent/JPS6416150A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5422526A (en) * | 1993-01-07 | 1995-06-06 | Toyota Jidosha Kabushiki Kaisha | Motor coil structure |
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