JPS5651160A - Image pickup device - Google Patents

Image pickup device

Info

Publication number
JPS5651160A
JPS5651160A JP12684979A JP12684979A JPS5651160A JP S5651160 A JPS5651160 A JP S5651160A JP 12684979 A JP12684979 A JP 12684979A JP 12684979 A JP12684979 A JP 12684979A JP S5651160 A JPS5651160 A JP S5651160A
Authority
JP
Japan
Prior art keywords
level
signal
image pickup
light quantity
signal level
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
JP12684979A
Other languages
Japanese (ja)
Inventor
Michio Masuda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 filed Critical Hitachi Ltd
Priority to JP12684979A priority Critical patent/JPS5651160A/en
Publication of JPS5651160A publication Critical patent/JPS5651160A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To obtain a bright screen, by detecting a maximum incident light quantity to control the incident light quantity so that blooming may be prevented and by amplifying electrically a small-signal part of a little incident light quantity after photoelectric conversion in the image pickup element. CONSTITUTION:When the object is photographed by the television camera, the light which passed through lens system 1 is reduced by stop 2 so that image pickup ele- ment 3 can be prevented from causing blooming even for the maximum light quantity. The output signal of image pickup element 3 is applied to vatiable gain amplifying circuit 6, and the output of variable gain amplifying circuit 6 becomes an output video signal through white level limit circuit 9 and is output from terminal 10. The signal level of the center of the object is detected by signal level detecting circuit 7; and if the level is small, the gain of amplifying circuit 6 is incerased to enlarge the whole of the signal level, and the signal level of the center part is enlarged according to enlargement above. In this case, the signal level of the background part is set to a proper level by circuit 9.
JP12684979A 1979-10-03 1979-10-03 Image pickup device Pending JPS5651160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12684979A JPS5651160A (en) 1979-10-03 1979-10-03 Image pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12684979A JPS5651160A (en) 1979-10-03 1979-10-03 Image pickup device

Publications (1)

Publication Number Publication Date
JPS5651160A true JPS5651160A (en) 1981-05-08

Family

ID=14945371

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12684979A Pending JPS5651160A (en) 1979-10-03 1979-10-03 Image pickup device

Country Status (1)

Country Link
JP (1) JPS5651160A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053886A2 (en) * 1980-12-08 1982-06-16 Sony Corporation Television cameras
JPS6229376A (en) * 1985-07-30 1987-02-07 Matsushita Electric Ind Co Ltd Image pickup device
US6270569B1 (en) * 1997-06-11 2001-08-07 Hitachi Cable Ltd. Method of fabricating nitride crystal, mixture, liquid phase growth method, nitride crystal, nitride crystal powders, and vapor phase growth method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5478617A (en) * 1977-12-05 1979-06-22 Nec Corp Automatic level adjusting system for video signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5478617A (en) * 1977-12-05 1979-06-22 Nec Corp Automatic level adjusting system for video signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053886A2 (en) * 1980-12-08 1982-06-16 Sony Corporation Television cameras
JPS6229376A (en) * 1985-07-30 1987-02-07 Matsushita Electric Ind Co Ltd Image pickup device
US6270569B1 (en) * 1997-06-11 2001-08-07 Hitachi Cable Ltd. Method of fabricating nitride crystal, mixture, liquid phase growth method, nitride crystal, nitride crystal powders, and vapor phase growth method

Similar Documents

Publication Publication Date Title
JPH0632441B2 (en) White balance automatic adjustment circuit
CA2177517A1 (en) Ambient Light Automatic Gain Control for Electronic Imaging Cameras and the Like
JPS5710583A (en) Automatic diaphragm control method of solidstate image pickup device
CA1262965C (en) Camera for recording television, photographic or cinematographic images
JPS6461175A (en) Sensitivity automatic adjusting device for electronic still camera
JPS5651160A (en) Image pickup device
KR910006478Y1 (en) White balance circuit of color television camera
JP2987454B2 (en) Imaging device
JPS6437178A (en) Digital video camera
JPS60105390A (en) Camera device
KR0141599B1 (en) Image pick up device
JPS5744385A (en) Signal processing circuit of color video camera
JP3330384B2 (en) Electronic imaging device
JPS6179378A (en) Image pickup device
JP2982479B2 (en) TV camera device
JPS55109081A (en) Television camera
JPS6051374A (en) Solid-state image pickup device
JP3041859B2 (en) Imaging device
JP3143112B2 (en) camera
JPS5799875A (en) Image pickup device
JPS6486784A (en) Color television camera
JPS5721181A (en) Television camera
JPH0578068U (en) TV camera
JPS63247625A (en) Automatic white adjusting device
JPS5619274A (en) Exposure control circuit of television camera