JPS6418311A - Optical reception circuit - Google Patents
Optical reception circuitInfo
- Publication number
- JPS6418311A JPS6418311A JP17569487A JP17569487A JPS6418311A JP S6418311 A JPS6418311 A JP S6418311A JP 17569487 A JP17569487 A JP 17569487A JP 17569487 A JP17569487 A JP 17569487A JP S6418311 A JPS6418311 A JP S6418311A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- comparator
- output
- level comparison
- comparison
- 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
- Electronic Switches (AREA)
Abstract
PURPOSE:To accurately demodulate a data to be sent by discriminating the logic level independently of the offset of a reception signal through the level comparison of a 1st comparator and correcting the difference from the duty automatically by a 2nd comparator. CONSTITUTION:A photodiode 10 converts an optical signal into an electric signal and gives a signal S1 amplified via an amplifier 11 to an integration circuit comprising a resistor R4 and a capacitor C2. A comparator 13 receives an integrated signal S2 to its inverting input and a positive feedback signal S3 of its own output to the signal S1 at its noninverting input to apply level comparison between the signals S2 and S3. A voltage division circuit 14 divides the power voltage Vcc by resistors R9, R10. The 2nd comparator 15 receives a comparison output S4 of the 1st comparator 13 at its inverting input and a voltage division voltage S5 at its noninverting input respectively to apply level comparison between the signals S4 and S5. A signal S6 being the output of the 2nd comparator 15 is fed to a data processing circuit, etc., at the post- stage (not shown in figure) as the discrimination demodulation output.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17569487A JPS6418311A (en) | 1987-07-14 | 1987-07-14 | Optical reception circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17569487A JPS6418311A (en) | 1987-07-14 | 1987-07-14 | Optical reception circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6418311A true JPS6418311A (en) | 1989-01-23 |
Family
ID=16000610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17569487A Pending JPS6418311A (en) | 1987-07-14 | 1987-07-14 | Optical reception circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6418311A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100701196B1 (en) * | 2005-12-21 | 2007-03-29 | 주식회사 포스코 | Non-oriented electricalsteel sheet with improved magnetic property and Method for manufacturing the same |
US8242810B2 (en) * | 2009-10-22 | 2012-08-14 | Lojack Operating Company, Lp | Fast settling, bit slicing comparator circuit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54118148A (en) * | 1978-03-07 | 1979-09-13 | Nec Corp | Comparator circuit |
JPS59148458A (en) * | 1983-02-14 | 1984-08-25 | Mitsubishi Electric Corp | Optical receiver |
JPS62136150A (en) * | 1985-12-10 | 1987-06-19 | Matsushita Electric Ind Co Ltd | Optical receiving circuit |
-
1987
- 1987-07-14 JP JP17569487A patent/JPS6418311A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54118148A (en) * | 1978-03-07 | 1979-09-13 | Nec Corp | Comparator circuit |
JPS59148458A (en) * | 1983-02-14 | 1984-08-25 | Mitsubishi Electric Corp | Optical receiver |
JPS62136150A (en) * | 1985-12-10 | 1987-06-19 | Matsushita Electric Ind Co Ltd | Optical receiving circuit |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100701196B1 (en) * | 2005-12-21 | 2007-03-29 | 주식회사 포스코 | Non-oriented electricalsteel sheet with improved magnetic property and Method for manufacturing the same |
US8242810B2 (en) * | 2009-10-22 | 2012-08-14 | Lojack Operating Company, Lp | Fast settling, bit slicing comparator circuit |
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