JPS55112083A - Optical transmission device - Google Patents
Optical transmission deviceInfo
- Publication number
- JPS55112083A JPS55112083A JP1918979A JP1918979A JPS55112083A JP S55112083 A JPS55112083 A JP S55112083A JP 1918979 A JP1918979 A JP 1918979A JP 1918979 A JP1918979 A JP 1918979A JP S55112083 A JPS55112083 A JP S55112083A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- synchronous signal
- video signal
- light emitting
- emitting element
- 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 secure the optical transmission via the light emitting element featuring the narrow linear region and the simple structure by omitting the linear driving of the light emitting element covering up to the area of the synchronous signal.
CONSTITUTION: The video signal sent from input terminal 21 is amplified at video amplification part 22 and then applied to synchronous signal clamping circuit 24 to clamp the synchronous signal up to the pedestal level. And the clamped video signal is applied to one terminal of light emitting element driving part 25, and light emitting element 26 is driven by the output of part 25. At the same time, the video signal delivered from part 22 is applied to synchronous signal isolator circuit 23, and the synchronous signal isolated by circuit 23 is applied to the other terminal of part 25. And the output of element 26 is controlled down to the level near the cut-off only for the synchronous signal section, and the video signal output is delivered to optical transmission medium 27 at the video signal section. This optical signal transmitted is applied to level slicer 30 via light receiving circuit 29 and then converted into the binary signal by the light reception level. After this, the synchronous signal is regenerated at synchronous signal regeneration part 31 and then compounded with the video signal passed through amplification part 32 at signal compounding part 33. Thus the original signal is restored.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1918979A JPS55112083A (en) | 1979-02-20 | 1979-02-20 | Optical transmission device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1918979A JPS55112083A (en) | 1979-02-20 | 1979-02-20 | Optical transmission device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55112083A true JPS55112083A (en) | 1980-08-29 |
Family
ID=11992382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1918979A Pending JPS55112083A (en) | 1979-02-20 | 1979-02-20 | Optical transmission device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55112083A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5685697U (en) * | 1979-12-04 | 1981-07-09 |
-
1979
- 1979-02-20 JP JP1918979A patent/JPS55112083A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5685697U (en) * | 1979-12-04 | 1981-07-09 |
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