FR2965442B1 - Procede d'ajustement en temps reel de la sensibilite d'un capteur d'image video dans une sonde videoendoscopique - Google Patents

Procede d'ajustement en temps reel de la sensibilite d'un capteur d'image video dans une sonde videoendoscopique

Info

Publication number
FR2965442B1
FR2965442B1 FR1003862A FR1003862A FR2965442B1 FR 2965442 B1 FR2965442 B1 FR 2965442B1 FR 1003862 A FR1003862 A FR 1003862A FR 1003862 A FR1003862 A FR 1003862A FR 2965442 B1 FR2965442 B1 FR 2965442B1
Authority
FR
France
Prior art keywords
gain
image sensor
maximum
sensitivity
real
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.)
Active
Application number
FR1003862A
Other languages
English (en)
Other versions
FR2965442A1 (fr
Inventor
Jean Rovegno
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.)
Tokendo
Original Assignee
Tokendo
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 Tokendo filed Critical Tokendo
Priority to FR1003862A priority Critical patent/FR2965442B1/fr
Publication of FR2965442A1 publication Critical patent/FR2965442A1/fr
Application granted granted Critical
Publication of FR2965442B1 publication Critical patent/FR2965442B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/091—Digital circuits
    • G03B7/093—Digital circuits for control of 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
    • H04N23/60—Control of cameras or camera modules
    • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
    • 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
    • H04N23/72—Combination of two or more compensation controls
    • 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
    • H04N23/76—Circuitry for compensating brightness variation in the scene by influencing the image signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Endoscopes (AREA)
FR1003862A 2010-09-29 2010-09-29 Procede d'ajustement en temps reel de la sensibilite d'un capteur d'image video dans une sonde videoendoscopique Active FR2965442B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1003862A FR2965442B1 (fr) 2010-09-29 2010-09-29 Procede d'ajustement en temps reel de la sensibilite d'un capteur d'image video dans une sonde videoendoscopique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1003862A FR2965442B1 (fr) 2010-09-29 2010-09-29 Procede d'ajustement en temps reel de la sensibilite d'un capteur d'image video dans une sonde videoendoscopique

Publications (2)

Publication Number Publication Date
FR2965442A1 FR2965442A1 (fr) 2012-03-30
FR2965442B1 true FR2965442B1 (fr) 2012-10-19

Family

ID=43529993

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1003862A Active FR2965442B1 (fr) 2010-09-29 2010-09-29 Procede d'ajustement en temps reel de la sensibilite d'un capteur d'image video dans une sonde videoendoscopique

Country Status (1)

Country Link
FR (1) FR2965442B1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2737650B1 (fr) * 1995-08-07 1997-11-28 Tokendo Sarl Videoendoscope
US6836288B1 (en) * 1999-02-09 2004-12-28 Linvatec Corporation Automatic exposure control system and method
JP2005131129A (ja) * 2003-10-30 2005-05-26 Olympus Corp 撮像装置及び内視鏡装置

Also Published As

Publication number Publication date
FR2965442A1 (fr) 2012-03-30

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