JPS5782956A - Picture signal correcting device - Google Patents
Picture signal correcting deviceInfo
- Publication number
- JPS5782956A JPS5782956A JP15819480A JP15819480A JPS5782956A JP S5782956 A JPS5782956 A JP S5782956A JP 15819480 A JP15819480 A JP 15819480A JP 15819480 A JP15819480 A JP 15819480A JP S5782956 A JPS5782956 A JP S5782956A
- Authority
- JP
- Japan
- Prior art keywords
- picture signal
- signal
- picture
- envelope
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
PURPOSE:To compensate the level fluctuation of a picture signal caused by various factors by detecting the envelope of the picture signal and dividing a picture input signal with the related output signal. CONSTITUTION:A corrected picture signal OUT is obtained from the output terminal of a dividing device 2 by taking out the envelope part of a picture signal IN by means of an envelope detector 1, and feeding this output signal into the dividing device 2 in order to divide the picture signal IN. On the other hand, the envelope detector 1 is formed with the low pass filter of an integral device AP, which connects the resistance Ra, Rb to the input side, the capacitor Ca between the device AP1 and an earth and a capacitor Cb between input and output. Therefore, since the picture signal IN is divided every moment by the envelope signal X and is corrected so as to keep the evelope at a constant value, it is possible to compensate the level fluctuation caused by the various factors of shading, etc. correctly in order to improve the precisin of picture processing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15819480A JPS5782956A (en) | 1980-11-12 | 1980-11-12 | Picture signal correcting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15819480A JPS5782956A (en) | 1980-11-12 | 1980-11-12 | Picture signal correcting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5782956A true JPS5782956A (en) | 1982-05-24 |
Family
ID=15666320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15819480A Pending JPS5782956A (en) | 1980-11-12 | 1980-11-12 | Picture signal correcting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5782956A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000067798A (en) * | 1998-08-21 | 2000-03-03 | Nikon Corp | Mapping type observation method and mapping type charged particle beam microscope |
US10987678B2 (en) | 2015-11-28 | 2021-04-27 | Eppendorf Himac Technologies Co., Ltd. | Centrifuge and centrifuge rotor for suppressing buoyancy |
-
1980
- 1980-11-12 JP JP15819480A patent/JPS5782956A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000067798A (en) * | 1998-08-21 | 2000-03-03 | Nikon Corp | Mapping type observation method and mapping type charged particle beam microscope |
US10987678B2 (en) | 2015-11-28 | 2021-04-27 | Eppendorf Himac Technologies Co., Ltd. | Centrifuge and centrifuge rotor for suppressing buoyancy |
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