JPS55112083A - Optical transmission device - Google Patents

Optical transmission device

Info

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
Application number
JP1918979A
Other languages
Japanese (ja)
Inventor
Kenzo Ono
Tsutomu Asabe
Hirokazu Yoshino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1918979A priority Critical patent/JPS55112083A/en
Publication of JPS55112083A publication Critical patent/JPS55112083A/en
Pending legal-status Critical Current

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
JP1918979A 1979-02-20 1979-02-20 Optical transmission device Pending JPS55112083A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5685697U (en) * 1979-12-04 1981-07-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5685697U (en) * 1979-12-04 1981-07-09

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