JPS5664567A - Automatic control unit for image pickup device - Google Patents

Automatic control unit for image pickup device

Info

Publication number
JPS5664567A
JPS5664567A JP14022279A JP14022279A JPS5664567A JP S5664567 A JPS5664567 A JP S5664567A JP 14022279 A JP14022279 A JP 14022279A JP 14022279 A JP14022279 A JP 14022279A JP S5664567 A JPS5664567 A JP S5664567A
Authority
JP
Japan
Prior art keywords
control system
light volume
gain control
gain
control unit
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
JP14022279A
Other languages
Japanese (ja)
Inventor
Takayoshi Hasegawa
Tadayuki Morishita
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14022279A priority Critical patent/JPS5664567A/en
Publication of JPS5664567A publication Critical patent/JPS5664567A/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)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE:To simplify the circuit constitution and at the same time reduce the vibration of the control system, by securing division between the light volume control system and the gain control system centering on the reference value of a certain light volume and then giving an automatic switching to both systems. CONSTITUTION:A certain gain is kept by the comparator 11 for the gain control part 5 during the state under which the light volume control system is working. In case the light volume lacks to open the lens stop-down part 2, the light volume control system stops. Then the gain control system comprising the gain control part 5, wave detector 6, differential amplifier 7 and comparator 11 each starts operation to compensate the lack of the light volume. Thus the video output voltage starts to be kept constant.
JP14022279A 1979-10-29 1979-10-29 Automatic control unit for image pickup device Pending JPS5664567A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14022279A JPS5664567A (en) 1979-10-29 1979-10-29 Automatic control unit for image pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14022279A JPS5664567A (en) 1979-10-29 1979-10-29 Automatic control unit for image pickup device

Publications (1)

Publication Number Publication Date
JPS5664567A true JPS5664567A (en) 1981-06-01

Family

ID=15263741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14022279A Pending JPS5664567A (en) 1979-10-29 1979-10-29 Automatic control unit for image pickup device

Country Status (1)

Country Link
JP (1) JPS5664567A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56153327A (en) * 1980-04-28 1981-11-27 Olympus Optical Co Ltd Iris servo device
JPS6168573U (en) * 1984-10-09 1986-05-10
JPH0564065A (en) * 1991-09-04 1993-03-12 Fuji Photo Film Co Ltd Exposure controller for video camera

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56153327A (en) * 1980-04-28 1981-11-27 Olympus Optical Co Ltd Iris servo device
JPH0258607B2 (en) * 1980-04-28 1990-12-10 Olympus Optical Co
JPS6168573U (en) * 1984-10-09 1986-05-10
JPH0564065A (en) * 1991-09-04 1993-03-12 Fuji Photo Film Co Ltd Exposure controller for video camera

Similar Documents

Publication Publication Date Title
SU1099853A3 (en) Apparatus for reproducing originals
AU569742B2 (en) Automatic focus control system for video camera
ES8406825A1 (en) Automatic kinescope bias control system with selectively disabled signal processor
GB2178264A (en) Automatic gain control circuit
JPS5664567A (en) Automatic control unit for image pickup device
CA2042950A1 (en) Automatic power control circuit for use with a radio telecommunication apparatus
KR840001984A (en) Compensation Clamping Circuit in Video Signal Peak System
EP0398368A3 (en) Focus apparatus and digital filters for use therewith
JPS5662231A (en) Control device for diaphragm of camera
JPS5694371A (en) Exposure control device
JPS5454632A (en) Photometric circuit of photographing apparatus
JPS55127528A (en) Program control camera
JPS5642482A (en) White balance regulator of color video camera
JPS5795762A (en) Picture signal processing device
JPS5658375A (en) Automatic focussing device for video camera
FR2485850B1 (en) AUTOMATIC GAIN ADJUSTMENT SYSTEM FOR A TELEVISION AND MIRROR POWER AMPLIFIER CIRCUIT FOR USE THEREOF
JPS5798139A (en) Optical recorder and reproducer
JPS54151029A (en) Automatic setting device of exposure time
SE8305540L (en) DEVICE FOR AUTOMATIC PICTURE PREDICTION CONTROL COMPENSATED FOR VARIATION POINT DANCE DIFFERENCE VARIATIONS
JPS5772114A (en) Signal processing circuit for focusing position detector
JPS56106478A (en) Automatic focusing device
JPS54100724A (en) Program shutter circuit for camera having interchangeable lenses
JPS6460067A (en) Device for inputting image
JPS53124027A (en) Frequency characteristics correcting device
JPS5587129A (en) Automatic aperture circuit of lens