JPS5460829A - Shading corrector device - Google Patents
Shading corrector deviceInfo
- Publication number
- JPS5460829A JPS5460829A JP12775777A JP12775777A JPS5460829A JP S5460829 A JPS5460829 A JP S5460829A JP 12775777 A JP12775777 A JP 12775777A JP 12775777 A JP12775777 A JP 12775777A JP S5460829 A JPS5460829 A JP S5460829A
- Authority
- JP
- Japan
- Prior art keywords
- value
- correction
- initial value
- shading
- converter
- 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
- Image Input (AREA)
- Picture Signal Circuits (AREA)
Abstract
PURPOSE: To enable the local correction of the shading and thus to reduce the effect of the gridge, by memorizing the shading correction and its value in the form of the initial value and the difference value in the high-speed direction with every block and reproducing the correction signal in the form of the continuous signal by means of the integrator and the clamping circuit.
CONSTITUTION: In the device which devides equally the full screen into plural blocks as the shading corrector circuit of a picture input unit using the equential scanning system, the following parts are installed: input terminal 10 to supply the analog signal given from the pickup device; memory 11 to memorize the correction value in the form of the initial value and the difference value in the high-speed scanning direction; and A-D converter 13 to convert the read-out contents of memory 11. Furthermore, the following units are added: integrator 14 to integrate in sequence the difference of the correction value which is given from converter 13; clamp setting circuit 15 to generate the potential to correspond to the initial value given from converter 13; and clamping circuit 16 which clamps the signal obtained by integrating the difference value to the potential corresponding to the initial value to reproduce the correction value
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12775777A JPS5460829A (en) | 1977-10-25 | 1977-10-25 | Shading corrector device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12775777A JPS5460829A (en) | 1977-10-25 | 1977-10-25 | Shading corrector device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5460829A true JPS5460829A (en) | 1979-05-16 |
Family
ID=14967925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12775777A Pending JPS5460829A (en) | 1977-10-25 | 1977-10-25 | Shading corrector device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5460829A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3014979A1 (en) | 1979-04-20 | 1980-11-06 | Canon Kk | RECORDING DEVICE |
JPS63294076A (en) * | 1987-05-26 | 1988-11-30 | Matsushita Electric Ind Co Ltd | Shading correcting device |
DE3051256C2 (en) * | 1979-04-20 | 1999-11-11 | Canon Kk | Recording system with acquisition device |
-
1977
- 1977-10-25 JP JP12775777A patent/JPS5460829A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3014979A1 (en) | 1979-04-20 | 1980-11-06 | Canon Kk | RECORDING DEVICE |
DE3051256C2 (en) * | 1979-04-20 | 1999-11-11 | Canon Kk | Recording system with acquisition device |
JPS63294076A (en) * | 1987-05-26 | 1988-11-30 | Matsushita Electric Ind Co Ltd | Shading correcting device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5242324A (en) | Chroma signal processing system | |
JPS52112228A (en) | Time axis correction unit | |
JPS5460829A (en) | Shading corrector device | |
JPS5571362A (en) | Picture synthesizing unit | |
JPS54137221A (en) | Generator of television signal for special effect | |
JPS6478581A (en) | Picture blurring corrector for video camera | |
JPS5423313A (en) | Video reproducing device | |
JPS54106116A (en) | Still picture filing device | |
JPS5597782A (en) | Solid-state pickup unit | |
JPS54153518A (en) | Corrector for time axis error | |
DE69119428D1 (en) | METHOD AND CIRCUIT ARRANGEMENT FOR CONSTANTLY HOLDING THE BLACK VALUE LEVEL AFTER ANALOG / DIGITAL CONVERTING A VIDEO SIGNAL | |
JPS5613886A (en) | Reproduced signal's time axis correcting device for recorded information reproducer | |
JPS55110425A (en) | Digital clamp system | |
JP3031961B2 (en) | Digital convergence correction device | |
JPS5689188A (en) | Time base correcting device | |
SU1580589A1 (en) | Television standard converter | |
JPS5466023A (en) | Television camera | |
JPS5335417A (en) | Correcting unit for recording signal | |
JPS5441016A (en) | Reproducing device of color video signal | |
JPS5280729A (en) | Signal processing unit for digitized color tv | |
JPS5664566A (en) | Shading compensating device for solid state image pickup element | |
JPS6462779A (en) | Shading correcting circuit for image sensor | |
JPS5521615A (en) | Memory unit for television picture | |
JPS5691585A (en) | Video signal processing method | |
JPS54515A (en) | Reproducing unit of video information |