JPS54153673A - Peak value detector - Google Patents
Peak value detectorInfo
- Publication number
- JPS54153673A JPS54153673A JP6098878A JP6098878A JPS54153673A JP S54153673 A JPS54153673 A JP S54153673A JP 6098878 A JP6098878 A JP 6098878A JP 6098878 A JP6098878 A JP 6098878A JP S54153673 A JPS54153673 A JP S54153673A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- amplifier
- scanning
- peak values
- detecting
- 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 detect accurate peak values and obtain binary coded signals even when voltage fluctuations occur owing to temperature drift in a TV camera by obtaining a mean value from the peak values of the video signal and comparing the same with the video signal of one scanning after.
CONSTITUTION: Video signal Vi is applied to analog switches AS 6, 8 via amplifiers L, M, N, P. The AS 6 goes ON while a detecting circuit including an amplifier Q is detecting maximum value and the AS 8 goes ON while the detecting circuit including an amplifier R is detecting minimum value. The ASs 7, 9 go ON at the start of scanning. This yields the maximum value output VQ and minimum value output VR and addition S of both outputs yields a mean value voltage VS, which is then supplied to an amplifier T as a capacitor C7 is charged by As 10. The mean value voltage VT obtained from the peak values of the video signal is compared U with the video signal VL of one scanning after, whereby a binary coded output VO is obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6098878A JPS54153673A (en) | 1978-05-24 | 1978-05-24 | Peak value detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6098878A JPS54153673A (en) | 1978-05-24 | 1978-05-24 | Peak value detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54153673A true JPS54153673A (en) | 1979-12-04 |
Family
ID=13158315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6098878A Pending JPS54153673A (en) | 1978-05-24 | 1978-05-24 | Peak value detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54153673A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57207867A (en) * | 1981-06-17 | 1982-12-20 | Hitachi Ltd | High resolution peak value measuring circuit by expansion of differential voltage |
-
1978
- 1978-05-24 JP JP6098878A patent/JPS54153673A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57207867A (en) * | 1981-06-17 | 1982-12-20 | Hitachi Ltd | High resolution peak value measuring circuit by expansion of differential voltage |
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