JPS55155254A - Pulse peak detecting circuit - Google Patents
Pulse peak detecting circuitInfo
- Publication number
- JPS55155254A JPS55155254A JP6226179A JP6226179A JPS55155254A JP S55155254 A JPS55155254 A JP S55155254A JP 6226179 A JP6226179 A JP 6226179A JP 6226179 A JP6226179 A JP 6226179A JP S55155254 A JPS55155254 A JP S55155254A
- Authority
- JP
- Japan
- Prior art keywords
- laser beam
- differential signal
- delay line
- peak value
- signal
- 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
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE: To improve the SN ratio with limitting the effect of noise caused of reflected light by holding the peak value of differential signal between an input pulse signal of the reflected laser beam with a fixed pulse width and a delayed signal thereof.
CONSTITUTION: As soon as the reflected laser beam is irradiated on a photodiode 1, current is generated according to the laser beam. Voltage corresponding to the laser beam generated across a resister 2 is directly applied to the positive input end of a subtractor 8 while to the negative input end thereof through a pulse delay line 7. The subtractor 8 forms the differential signal between the output of the photo diode 1 and the delayed output via the delay line 7. The differential signal is applied to the peak hold circuit 9 to hold the peak value of the differential signal whereby the peak value is detected. Thus, the utilization of the pulse delay line 7 allows the reflected laser beam to be separated from the noise reflected light thereby improving SN ratio.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6226179A JPS55155254A (en) | 1979-05-22 | 1979-05-22 | Pulse peak detecting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6226179A JPS55155254A (en) | 1979-05-22 | 1979-05-22 | Pulse peak detecting circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55155254A true JPS55155254A (en) | 1980-12-03 |
Family
ID=13195020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6226179A Pending JPS55155254A (en) | 1979-05-22 | 1979-05-22 | Pulse peak detecting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55155254A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59166174U (en) * | 1983-04-22 | 1984-11-07 | 東北電力株式会社 | Non-bias waveform detection device |
JP2006163235A (en) * | 2004-12-10 | 2006-06-22 | Fuji Xerox Co Ltd | Method for forming image |
KR100813462B1 (en) | 2006-09-11 | 2008-03-13 | (주)에프씨아이 | Peak detector |
-
1979
- 1979-05-22 JP JP6226179A patent/JPS55155254A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59166174U (en) * | 1983-04-22 | 1984-11-07 | 東北電力株式会社 | Non-bias waveform detection device |
JPH0311742Y2 (en) * | 1983-04-22 | 1991-03-20 | ||
JP2006163235A (en) * | 2004-12-10 | 2006-06-22 | Fuji Xerox Co Ltd | Method for forming image |
KR100813462B1 (en) | 2006-09-11 | 2008-03-13 | (주)에프씨아이 | Peak detector |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55155254A (en) | Pulse peak detecting circuit | |
JPS577631A (en) | Photoelectric switch | |
JPS52122038A (en) | Fixed noise elimination of solid image sensor | |
JPS5583280A (en) | Output stabilizing system for semiconductor laser | |
JPS51139789A (en) | Photo-electric conversion semiconductor device | |
JPS5475557A (en) | Voltage detector for thyristor converter | |
JPS5319807A (en) | Luminous flux focus controller | |
SU805077A1 (en) | Pulse photometer | |
JPS54106127A (en) | Detector for scanning start position | |
JPS56111678A (en) | Laser recording device | |
JPS54149501A (en) | Photoelectric converter circuit | |
JPS55140973A (en) | Binary coding circuit | |
JPS54145160A (en) | Reflection type photoelectric detector | |
JPS5742218A (en) | Delay automatic gain control circuit | |
JPS53122331A (en) | Synchronous control system for scanned light beam | |
JPS5610231A (en) | Manuscript density detector | |
JPS5475211A (en) | Read mechanism of facsimile unit | |
JPS578836A (en) | Light pen device | |
JPS5429591A (en) | Semiconductor laser device | |
JPS53100830A (en) | Out-of-focus detector | |
JPS5566062A (en) | Optical information detection unit | |
JPS57197925A (en) | Photocoupler | |
JPS536590A (en) | Photo sensor with plural light emitting parts | |
JPS5690378A (en) | Position signal generator | |
JPS5418215A (en) | Balanced output amplifier |