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GB2329809B - Camera arrangements - Google Patents

Camera arrangements

Info

Publication number
GB2329809B
GB2329809B GB9720381A GB9720381A GB2329809B GB 2329809 B GB2329809 B GB 2329809B GB 9720381 A GB9720381 A GB 9720381A GB 9720381 A GB9720381 A GB 9720381A GB 2329809 B GB2329809 B GB 2329809B
Authority
GB
United Kingdom
Prior art keywords
camera arrangements
arrangements
camera
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.)
Expired - Fee Related
Application number
GB9720381A
Other versions
GB2329809A (en
GB9720381D0 (en
Inventor
Andrew De Mouilpied Fremont
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.)
BAE Systems Electronics Ltd
Original Assignee
GEC Marconi Ltd
Marconi Co Ltd
Marconi Electronic Systems Ltd
BAE Systems Electronics 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 GEC Marconi Ltd, Marconi Co Ltd, Marconi Electronic Systems Ltd, BAE Systems Electronics Ltd filed Critical GEC Marconi Ltd
Priority to GB9720381A priority Critical patent/GB2329809B/en
Publication of GB9720381D0 publication Critical patent/GB9720381D0/en
Publication of GB2329809A publication Critical patent/GB2329809A/en
Application granted granted Critical
Publication of GB2329809B publication Critical patent/GB2329809B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
    • 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
    • H04N23/745—Detection of flicker frequency or suppression of flicker wherein the flicker is caused by illumination, e.g. due to fluorescent tube illumination or pulsed LED illumination

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
GB9720381A 1997-09-26 1997-09-26 Camera arrangements Expired - Fee Related GB2329809B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9720381A GB2329809B (en) 1997-09-26 1997-09-26 Camera arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9720381A GB2329809B (en) 1997-09-26 1997-09-26 Camera arrangements

Publications (3)

Publication Number Publication Date
GB9720381D0 GB9720381D0 (en) 1997-11-26
GB2329809A GB2329809A (en) 1999-03-31
GB2329809B true GB2329809B (en) 2001-10-31

Family

ID=10819615

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9720381A Expired - Fee Related GB2329809B (en) 1997-09-26 1997-09-26 Camera arrangements

Country Status (1)

Country Link
GB (1) GB2329809B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2349534B (en) * 1999-04-27 2003-11-12 Jonathan David Hares Sinusoidal modulation of illumination and detection apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848085A (en) * 1973-08-07 1974-11-12 Us Army Low light level television camera
US4495415A (en) * 1981-11-24 1985-01-22 Canon Kabushiki Kaisha Radiation sensing system
EP0269356A2 (en) * 1986-11-21 1988-06-01 Sperry Marine Inc. Pulse modulated automatic light control utilising gated image intensifier
EP0506031A1 (en) * 1991-03-27 1992-09-30 Matsushita Electric Industrial Co., Ltd. Illumination flicker correction for video cameras
US5272539A (en) * 1990-12-22 1993-12-21 Sony Corporation Video camera with flicker cancellation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848085A (en) * 1973-08-07 1974-11-12 Us Army Low light level television camera
US4495415A (en) * 1981-11-24 1985-01-22 Canon Kabushiki Kaisha Radiation sensing system
EP0269356A2 (en) * 1986-11-21 1988-06-01 Sperry Marine Inc. Pulse modulated automatic light control utilising gated image intensifier
US5272539A (en) * 1990-12-22 1993-12-21 Sony Corporation Video camera with flicker cancellation
EP0506031A1 (en) * 1991-03-27 1992-09-30 Matsushita Electric Industrial Co., Ltd. Illumination flicker correction for video cameras

Also Published As

Publication number Publication date
GB2329809A (en) 1999-03-31
GB9720381D0 (en) 1997-11-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020926