JPS5539493A - After-image correction device - Google Patents

After-image correction device

Info

Publication number
JPS5539493A
JPS5539493A JP10398679A JP10398679A JPS5539493A JP S5539493 A JPS5539493 A JP S5539493A JP 10398679 A JP10398679 A JP 10398679A JP 10398679 A JP10398679 A JP 10398679A JP S5539493 A JPS5539493 A JP S5539493A
Authority
JP
Japan
Prior art keywords
signal
output
coefficient
correction
frame
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
JP10398679A
Other languages
Japanese (ja)
Inventor
Yoshizumi Eto
Norihiko Fukinuki
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.)
Hitachi Denshi KK
Hitachi Ltd
Original Assignee
Hitachi Denshi KK
Hitachi 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 Hitachi Denshi KK, Hitachi Ltd filed Critical Hitachi Denshi KK
Priority to JP10398679A priority Critical patent/JPS5539493A/en
Publication of JPS5539493A publication Critical patent/JPS5539493A/en
Pending legal-status Critical Current

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Landscapes

  • Picture Signal Circuits (AREA)

Abstract

PURPOSE: To secure the correction for the after-image over a wide range by giving processing to the output signals of the pickup tube via the frame or the field memory and then adding the coefficient to the present signal of the pickup tube output as well as to the 1-frame preceding input or output signal.
CONSTITUTION: Signal SO to be applied to input terminal 1 is applied to frame memory 2 to be delayed, and 1-frame preceding signal S-1 is delivered to be applied to coefficient circuit 3 and then to deliver signal S-1K to the output. Signal S-1K is then supplied to subtractor 4 to deliver signal S'O which gave correction to the after-image given from output terminal 5. The input signal of such compositon is used as the 1st TV signal, and the coefficient to be added to this TV signal is set to 1. Otherwise coefficients K'+1 and K' are added to present signal SO and 1- frame preceding signal S-1 each at coefficient circuits 7 and 6. And the relation between coefficients K and K' is set as K'=1/(1-K), and the signal which gave correction to the after-image is delivered through terminal 5.
COPYRIGHT: (C)1980,JPO&Japio
JP10398679A 1979-08-17 1979-08-17 After-image correction device Pending JPS5539493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10398679A JPS5539493A (en) 1979-08-17 1979-08-17 After-image correction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10398679A JPS5539493A (en) 1979-08-17 1979-08-17 After-image correction device

Publications (1)

Publication Number Publication Date
JPS5539493A true JPS5539493A (en) 1980-03-19

Family

ID=14368623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10398679A Pending JPS5539493A (en) 1979-08-17 1979-08-17 After-image correction device

Country Status (1)

Country Link
JP (1) JPS5539493A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6072489A (en) * 1983-09-29 1985-04-24 Fuji Xerox Co Ltd Color picture reader
JPS62285582A (en) * 1986-06-03 1987-12-11 Nec Corp Digital image processor
JPS6412773A (en) * 1987-07-07 1989-01-17 Canon Kk Video signal processing circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6072489A (en) * 1983-09-29 1985-04-24 Fuji Xerox Co Ltd Color picture reader
JPS62285582A (en) * 1986-06-03 1987-12-11 Nec Corp Digital image processor
JPS6412773A (en) * 1987-07-07 1989-01-17 Canon Kk Video signal processing circuit

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