JPS5782956A - Picture signal correcting device - Google Patents

Picture signal correcting device

Info

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
Application number
JP15819480A
Other languages
Japanese (ja)
Inventor
Kiyoo Hosoi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15819480A priority Critical patent/JPS5782956A/en
Publication of JPS5782956A publication Critical patent/JPS5782956A/en
Pending legal-status Critical Current

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.
JP15819480A 1980-11-12 1980-11-12 Picture signal correcting device Pending JPS5782956A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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