JPS5460829A - Shading corrector device - Google Patents

Shading corrector device

Info

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
Application number
JP12775777A
Other languages
Japanese (ja)
Inventor
Akihide Kamiyama
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 JP12775777A priority Critical patent/JPS5460829A/en
Publication of JPS5460829A publication Critical patent/JPS5460829A/en
Pending legal-status Critical Current

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
JP12775777A 1977-10-25 1977-10-25 Shading corrector device Pending JPS5460829A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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