JPS57194678A - Television camera - Google Patents

Television camera

Info

Publication number
JPS57194678A
JPS57194678A JP56079419A JP7941981A JPS57194678A JP S57194678 A JPS57194678 A JP S57194678A JP 56079419 A JP56079419 A JP 56079419A JP 7941981 A JP7941981 A JP 7941981A JP S57194678 A JPS57194678 A JP S57194678A
Authority
JP
Japan
Prior art keywords
image pickup
made incident
light volume
saturated
incident
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
JP56079419A
Other languages
Japanese (ja)
Inventor
Mitsuo Takano
Hideo Nakayama
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 JP56079419A priority Critical patent/JPS57194678A/en
Publication of JPS57194678A publication Critical patent/JPS57194678A/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
    • H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)

Abstract

PURPOSE:To suppress the blooming phenomenon which is caused to an image pickup matter for video signal, by providing an image pickup body for detection of a highlight and controlling the light transmission factor of a liquid crystal matrix based on the result of the highlight detection. CONSTITUTION:The greater part of the incident beam given through a lens 1 is made incident to the 1st image pickup body 3 through a half mirror 2 and via a liquid crystal matrix 5. The rest of the incident beam is made incident to the 2nd image pickup body 4 in the same way. The signal supplied from the body 4 is applied to a binary coding circuit 9 via a sample holding circuit 6, a low pass filter 7 and an amplifier 8 and then sliced at a level equivalent to the saturated charging degree of the body 3. This sliced signal is binary coded and stored in a shift register 10. A driving circuit 11 controls the matrix 5 so as to reduce the transmission factor of the area corresponding to the part to which the light volume larger than the saturated light volume of the body 3 is going to be made incident. Thus the light volume larger than the saturated light volume is not made incident to the body 3.
JP56079419A 1981-05-27 1981-05-27 Television camera Pending JPS57194678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56079419A JPS57194678A (en) 1981-05-27 1981-05-27 Television camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56079419A JPS57194678A (en) 1981-05-27 1981-05-27 Television camera

Publications (1)

Publication Number Publication Date
JPS57194678A true JPS57194678A (en) 1982-11-30

Family

ID=13689341

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56079419A Pending JPS57194678A (en) 1981-05-27 1981-05-27 Television camera

Country Status (1)

Country Link
JP (1) JPS57194678A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6076888A (en) * 1983-10-03 1985-05-01 Olympus Optical Co Ltd Automatic dimmer for image pickup
JPS62248382A (en) * 1986-04-22 1987-10-29 Hamamatsu Photonics Kk Night vision device
JPS6335081A (en) * 1986-07-30 1988-02-15 Rhythm Watch Co Ltd Light quantity correcting device for video camera
JPS6335082A (en) * 1986-07-30 1988-02-15 Rhythm Watch Co Ltd Light quantity correcting device for video camera
JPS63238785A (en) * 1987-03-26 1988-10-04 Nec Corp Solid-state image pickup device
FR2658685A1 (en) * 1990-02-16 1991-08-23 Scanera Sc Ste Civile Rech Camera with very wide dynamic range
FR2660822A1 (en) * 1990-04-05 1991-10-11 Scanera Ste Civile Rech Camera with double image acquisition producing images with very high dynamic range
JP2009130805A (en) * 2007-11-27 2009-06-11 Nippon Hoso Kyokai <Nhk> Imaging apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6076888A (en) * 1983-10-03 1985-05-01 Olympus Optical Co Ltd Automatic dimmer for image pickup
JPS62248382A (en) * 1986-04-22 1987-10-29 Hamamatsu Photonics Kk Night vision device
JPS6335081A (en) * 1986-07-30 1988-02-15 Rhythm Watch Co Ltd Light quantity correcting device for video camera
JPS6335082A (en) * 1986-07-30 1988-02-15 Rhythm Watch Co Ltd Light quantity correcting device for video camera
JPS63238785A (en) * 1987-03-26 1988-10-04 Nec Corp Solid-state image pickup device
FR2658685A1 (en) * 1990-02-16 1991-08-23 Scanera Sc Ste Civile Rech Camera with very wide dynamic range
FR2660822A1 (en) * 1990-04-05 1991-10-11 Scanera Ste Civile Rech Camera with double image acquisition producing images with very high dynamic range
JP2009130805A (en) * 2007-11-27 2009-06-11 Nippon Hoso Kyokai <Nhk> Imaging apparatus

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