JPS60150846U - Receiving device for optical transmission video signals - Google Patents
Receiving device for optical transmission video signalsInfo
- Publication number
- JPS60150846U JPS60150846U JP1984038731U JP3873184U JPS60150846U JP S60150846 U JPS60150846 U JP S60150846U JP 1984038731 U JP1984038731 U JP 1984038731U JP 3873184 U JP3873184 U JP 3873184U JP S60150846 U JPS60150846 U JP S60150846U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- video signal
- output
- receiving device
- gain control
- 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
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図及び第２図は従来の光伝送映像信号の受信装置の
構成例を示すブロック図及びその説明に供する波形図、
第３図は本考案による光伝送映像信号の受信装置の一実
施例を示すブロック図、第４図は本考案の説明に供する
波形図である。
１は光検出器、３は利得制御増幅器、５はレベル検出回
路、６は低域フィルタ、７は直流増幅器、１０は差動増
幅器である。1 and 2 are block diagrams showing a configuration example of a conventional optically transmitted video signal receiving device, and waveform diagrams for explaining the same,
FIG. 3 is a block diagram showing an embodiment of an optical transmission video signal receiving apparatus according to the present invention, and FIG. 4 is a waveform diagram for explaining the present invention. 1 is a photodetector, 3 is a gain control amplifier, 5 is a level detection circuit, 6 is a low-pass filter, 7 is a DC amplifier, and 10 is a differential amplifier.
Claims (1)
再生する光検出器と、該光検出器からの再生映像信号が
供給される利得制御増幅器と、該利得制御増幅器の出力
レベルを検出するレベル検出回路と、該レベル検出回路
の出力を平滑化する低域フ、イルタと、該低域フィルタ
の出力を増幅し、制御信号として上記利得制御増幅器に
供給する直流増幅器とを具備する光伝送映像信号の受信
装置において、上記直流増幅器と上記利得制御増幅器と
の間に差動増幅器を介在させ、該差動増幅器の第１及び
第２の入力端子に上記直流増幅器の出力をそれぞれ直流
結合及び交流結合によって供給するようにしたことを特
徴とする光伝送映像信号の受信装置。A photodetector that detects light intensity modulated with a video signal and reproduces the video signal; a gain control amplifier to which the reproduced video signal from the photodetector is supplied; and detecting the output level of the gain control amplifier. a level detection circuit that smoothes the output of the level detection circuit, a low-pass filter that smoothes the output of the level detection circuit, and a DC amplifier that amplifies the output of the low-pass filter and supplies it as a control signal to the gain control amplifier. In the transmission video signal receiving device, a differential amplifier is interposed between the DC amplifier and the gain control amplifier, and the output of the DC amplifier is DC-coupled to the first and second input terminals of the differential amplifier, respectively. and an optical transmission video signal receiving device, characterized in that the signal is supplied by AC coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984038731U JPS60150846U (en) | 1984-03-17 | 1984-03-17 | Receiving device for optical transmission video signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984038731U JPS60150846U (en) | 1984-03-17 | 1984-03-17 | Receiving device for optical transmission video signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60150846U true JPS60150846U (en) | 1985-10-07 |
Family
ID=30546010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984038731U Pending JPS60150846U (en) | 1984-03-17 | 1984-03-17 | Receiving device for optical transmission video signals |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60150846U (en) |
-
1984
- 1984-03-17 JP JP1984038731U patent/JPS60150846U/en active Pending
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