JPS6437174A - Image pickup device - Google Patents

Image pickup device

Info

Publication number
JPS6437174A
JPS6437174A JP62193180A JP19318087A JPS6437174A JP S6437174 A JPS6437174 A JP S6437174A JP 62193180 A JP62193180 A JP 62193180A JP 19318087 A JP19318087 A JP 19318087A JP S6437174 A JPS6437174 A JP S6437174A
Authority
JP
Japan
Prior art keywords
signal
level
image pickup
comparator
saturating
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.)
Granted
Application number
JP62193180A
Other languages
Japanese (ja)
Other versions
JPH0759051B2 (en
Inventor
Noboru Matsuda
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP62193180A priority Critical patent/JPH0759051B2/en
Publication of JPS6437174A publication Critical patent/JPS6437174A/en
Publication of JPH0759051B2 publication Critical patent/JPH0759051B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To properly adjust exposure at all time by fixing the signal level part between the back porch part and the front porch part of a video signal at a prescribed level at a time when an output signal is in a saturating level. CONSTITUTION:When the charges generated in respective picture elements of an image pickup element 24 come in saturating state due to the enhancement in the quantity of light, the state is detected by a lower limit peak holding circuit 33 and a comparator 32. By an output from the comparator 32, a switch circuit 31 is switched. Accordingly, a clamping circuit 26 fixes the signal part between the back porch part and the front porch part of a video signal at a prescribed level.
JP62193180A 1987-07-31 1987-07-31 Imaging device Expired - Fee Related JPH0759051B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62193180A JPH0759051B2 (en) 1987-07-31 1987-07-31 Imaging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62193180A JPH0759051B2 (en) 1987-07-31 1987-07-31 Imaging device

Publications (2)

Publication Number Publication Date
JPS6437174A true JPS6437174A (en) 1989-02-07
JPH0759051B2 JPH0759051B2 (en) 1995-06-21

Family

ID=16303634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62193180A Expired - Fee Related JPH0759051B2 (en) 1987-07-31 1987-07-31 Imaging device

Country Status (1)

Country Link
JP (1) JPH0759051B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04236581A (en) * 1991-01-18 1992-08-25 Fuji Photo Film Co Ltd Black level correcting circuit for video signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710583A (en) * 1980-06-23 1982-01-20 Nec Corp Automatic diaphragm control method of solidstate image pickup device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710583A (en) * 1980-06-23 1982-01-20 Nec Corp Automatic diaphragm control method of solidstate image pickup device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04236581A (en) * 1991-01-18 1992-08-25 Fuji Photo Film Co Ltd Black level correcting circuit for video signal

Also Published As

Publication number Publication date
JPH0759051B2 (en) 1995-06-21

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees