JPS5539493A - After-image correction device - Google Patents
After-image correction deviceInfo
- 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
Links
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
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)
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 |
-
1979
- 1979-08-17 JP JP10398679A patent/JPS5539493A/en active Pending
Cited By (3)
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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