JPS54152849A - Binary coding device - Google Patents
Binary coding deviceInfo
- Publication number
- JPS54152849A JPS54152849A JP6099678A JP6099678A JPS54152849A JP S54152849 A JPS54152849 A JP S54152849A JP 6099678 A JP6099678 A JP 6099678A JP 6099678 A JP6099678 A JP 6099678A JP S54152849 A JPS54152849 A JP S54152849A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- peak value
- value detecting
- minimum value
- output
- 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
- Picture Signal Circuits (AREA)
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE: To secure the detection of the accurate peak value regardless of the voltage fluctuation caused by the temperature drift of the video signals by charging the peak value detecting capacitor with sufficiently higher voltage than the video input signal at the minimum value detecting circuit part.
CONSTITUTION: At the minimum value detecting circuit part comprising diode D5, analog switch AS8 and As9, peak value detecting capacitor C6, resistances R49∼ R51 and amplifier R each, voltage V2 formed with R50 and R51 via the voltage divider is charged to C6 by turning on AS9. And the discharging is given from C6 to Vp (output voltage of amplifier P) through D5 when AS8 is turned on, and this discharging is performed every time Vp lower than potential of C6 is supplied. Thus, the minimum value of Vp during the sampling period remains at C6, and output VR is obtained through R49 and R. In such circuit constitution, the operation to swing the video signal positive and negative which is hitherto required to detect the peak value can be omitted, and accordingly the accurate peak value can be detected even in case the voltage fluctuataion may be caused by the temperature drift to the video signals. As a result, the threshold level can always be secured to obtain the proper binary coding output V0.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6099678A JPS54152849A (en) | 1978-05-24 | 1978-05-24 | Binary coding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6099678A JPS54152849A (en) | 1978-05-24 | 1978-05-24 | Binary coding device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54152849A true JPS54152849A (en) | 1979-12-01 |
Family
ID=13158543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6099678A Pending JPS54152849A (en) | 1978-05-24 | 1978-05-24 | Binary coding device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54152849A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57150222A (en) * | 1981-03-12 | 1982-09-17 | Olympus Optical Co Ltd | Binary signal converting circuit |
-
1978
- 1978-05-24 JP JP6099678A patent/JPS54152849A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57150222A (en) * | 1981-03-12 | 1982-09-17 | Olympus Optical Co Ltd | Binary signal converting circuit |
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