JPS62178077A - Solid-state image pickup device - Google Patents

Solid-state image pickup device

Info

Publication number
JPS62178077A
JPS62178077A JP61017973A JP1797386A JPS62178077A JP S62178077 A JPS62178077 A JP S62178077A JP 61017973 A JP61017973 A JP 61017973A JP 1797386 A JP1797386 A JP 1797386A JP S62178077 A JPS62178077 A JP S62178077A
Authority
JP
Japan
Prior art keywords
black
circuit
solid
image pickup
state image
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
JP61017973A
Other languages
Japanese (ja)
Inventor
Takuya Imaide
Masaru Noda
Tomoyuki Kurashige
Original Assignee
Hitachi Ltd
Hitachi Video Eng 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 Hitachi Ltd, Hitachi Video Eng Co Ltd filed Critical Hitachi Ltd
Priority to JP61017973A priority Critical patent/JPS62178077A/en
Publication of JPS62178077A publication Critical patent/JPS62178077A/en
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the ununiformity of black level by providing a means which averages samples of optical black.
CONSTITUTION: The part of optical black in the start of a horizontal scanning period is fluctuated in the vertical direction as shown by a waveform W1. This part of optical black is extracted by a reference black gate circuit 3 and is allowed to pass an averaging circuit 12 to suppress the fluctuation in the vertical direction of the optical black level, namely, the fluctuation in one field, and the ununiformity of the black level does not occur in DC reproducing in a clamping circuit 2. The circuit 12 is a LPF which suppresses sufficiently 60Hz.
COPYRIGHT: (C)1987,JPO&Japio
JP61017973A 1986-01-31 1986-01-31 Solid-state image pickup device Granted JPS62178077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61017973A JPS62178077A (en) 1986-01-31 1986-01-31 Solid-state image pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61017973A JPS62178077A (en) 1986-01-31 1986-01-31 Solid-state image pickup device

Publications (1)

Publication Number Publication Date
JPS62178077A true JPS62178077A (en) 1987-08-05

Family

ID=11958672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61017973A Granted JPS62178077A (en) 1986-01-31 1986-01-31 Solid-state image pickup device

Country Status (1)

Country Link
JP (1) JPS62178077A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63169882A (en) * 1987-01-07 1988-07-13 Canon Inc Solid-state image pickup device
JPH04167791A (en) * 1990-10-30 1992-06-15 Sanyo Electric Co Ltd Solid-state image pickup device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63169882A (en) * 1987-01-07 1988-07-13 Canon Inc Solid-state image pickup device
JPH04167791A (en) * 1990-10-30 1992-06-15 Sanyo Electric Co Ltd Solid-state image pickup device

Similar Documents

Publication Publication Date Title
JPS63215274A (en) Clamp circuit for solid-state image pickup device
JPS62178077A (en) Solid-state image pickup device
JPS60157372A (en) Frame detecting device of picture processing system
JPS54161821A (en) Picture tracking device
JPS6259473A (en) Solid-state image pickup device
JPS6320977A (en) Solid-state image pickup device for switching accumulation time
JPS6350172A (en) Video camera unit
DK52888A (en) Mac format with alternative equipment level and roof recovery signals
JPS5549079A (en) Recording and reproducing device for video format signal
JPH04109235A (en) Projecting machine
JPS5432017A (en) Receiving device for still/motion pictures
JPS55140373A (en) Automatic focus adjustment unit of video camera
ES8303868A1 (en) "improvements introduced in an arrangement to treat a representative video frequency signal of an image".
JPH0251981A (en) Image pickup device
JPS6251877A (en) Noise suppressing circuit
JPS63117571A (en) Waveform distortion detecting system for television signal
JPH043670A (en) Video blurring preventing device for image pickup device
JPS61148973A (en) Clamping circuit for image pickup device
JPH02190087A (en) Solid-state image pickup device
JPH04227175A (en) Method and device for driving solid-state image pickup element
JPS62154984A (en) Magnetic recording and reproducing device
JPS63153960A (en) Clamping circuit for ccd black reference level
JPH01286584A (en) Solid-state image pickup device
JPS63253773A (en) Automatic focussing device
JPS62257284A (en) Image pickup device