KR930000999A - Aperture control circuit using screen division - Google Patents

Aperture control circuit using screen division Download PDF

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Publication number
KR930000999A
KR930000999A KR1019910010323A KR910010323A KR930000999A KR 930000999 A KR930000999 A KR 930000999A KR 1019910010323 A KR1019910010323 A KR 1019910010323A KR 910010323 A KR910010323 A KR 910010323A KR 930000999 A KR930000999 A KR 930000999A
Authority
KR
South Korea
Prior art keywords
signal
screen
window pulse
aperture driving
digital
Prior art date
Application number
KR1019910010323A
Other languages
Korean (ko)
Other versions
KR930003305B1 (en
Inventor
이종필
Original Assignee
강진구
삼성전자 주식회사
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 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR9110323A priority Critical patent/KR930003305B1/en
Priority to GB9206650A priority patent/GB2256990A/en
Priority to JP4088481A priority patent/JPH05167917A/en
Priority to DE4212515A priority patent/DE4212515A1/en
Publication of KR930000999A publication Critical patent/KR930000999A/en
Application granted granted Critical
Publication of KR930003305B1 publication Critical patent/KR930003305B1/en

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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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • 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
    • H04N23/71—Circuitry for evaluating the brightness variation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
  • Exposure Control For Cameras (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)

Abstract

내용 없음.No content.

Description

화면 분할을 이용한 조리개 조정회로Aperture control circuit using screen division

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 1 도는 본 발명의 회로도.1 is a circuit diagram of the present invention.

제 2 도는 윈도우 펄스의 종류와 그에 따른 화면 분할 상태도.2 is a diagram illustrating a type of window pulse and a screen division state accordingly.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 고체 촬상 소자 10 : 조리개 구동신호 발생부DESCRIPTION OF SYMBOLS 1 Solid-state image sensor 10 Aperture drive signal generation part

12 : 게인 콘트롤부 13 : 신호 선택부12 gain control unit 13 signal selection unit

15 : 적분부 20 : 윈도우 펄스 발생부15: integral part 20: window pulse generator

22 : 아나로그 디지탈 변환기 23 : 화면분할부22: Analog Digital Converter 23: Screen Division

24 : 절환스위치 25 : 윈도우 펄스 신호 출력부24: changeover switch 25: window pulse signal output

30 : 조리개 조절부 CP : 비교기30: aperture control unit CP: comparator

M : 모터 R1,R2 : 저항M: Motor R1, R2: Resistance

Claims (2)

고체 촬상 소자(1)에서 촬상된 비데오 신호의 평균치를 구하여 조리개 구동신호를 발생시키는 조리개 구동신호 발생부(10)와, 상기 조리개 구동신호 발생부(10)의 조리개 구동신호를 기준레벨과 비교하여 조리개 구동용 모터(M)의 구동을 제어하는 조리개 조절부(30)가 구성된 자동 조리개 조절회로에 있어서, 상기 고체 촬상 소자(1)에서 촬상된 비데오 신호를 디지탈로 변화시켜 및 몇개의 특정화면으로 분할하고 분할된 특정화면을 선택하여 윈도우 펄스 신호를 발생시키는 윈도우 펄스 발생부(20)와, 상기 윈도우 펄스 발생부(20)의 윈도우 펄스 신호를 받아 입력 비데오 신호를 선택하는 신호 선택부(13)를 조리개 구동신호 발생부(10)에서 구성시킨 화면 분할을 이용한 조리개 조정회로.An aperture driving signal generator 10 for generating an aperture driving signal by calculating an average value of video signals captured by the solid-state imaging device 1 and an aperture driving signal of the aperture driving signal generator 10 are compared with a reference level. In the automatic diaphragm adjustment circuit configured with an aperture control unit 30 for controlling the drive of the aperture driving motor M, the video signal captured by the solid-state imaging device 1 is changed to digital and displayed on several specific screens. A window pulse generator 20 for generating a window pulse signal by splitting and selecting a specific screen, and a signal selector 13 for receiving an window pulse signal from the window pulse generator 20 and selecting an input video signal The aperture adjustment circuit using the screen division configured in the aperture driving signal generator 10. 제 1 항에 있어서, 윈도우 펄스 발생부(20)는 입력비데오 신호를 처리하여 휘도 신호를 발생시키는 이메지 프로세싱 회로(21)와, 상기 이메지 프로세싱 회로(21)의 휘도신호를 디지탈로 변환시키는 아나로그 디지탈 변환기(22)와, 상기 아나로그 디지탈 변환기(22)의 디지탈 신호를 받아 몇개 화면으로 분할시키는 화면 분할부(23)와, 상기 화면분할부(23)의 분할화면중 특정화면을 키입력으로 선택하는 절환스위치(24)와, 상기 절환스위치(25)에서 선택된 분할화면에 대한 수평, 수직의 윈도우 펄스 신호를 신호선택부(13)로 출력시키는 윈도우 펄스 신호 출력부(25)로 구성된 화면분할을 이용한 조정회로.The image processing circuit of claim 1, wherein the window pulse generator 20 processes an input video signal to generate a luminance signal, and an analog to convert the luminance signal of the image processing circuit 21 to digital. A digital screen 22, a screen divider 23 for receiving a digital signal of the analog digital converter 22 and dividing it into several screens, and a specific screen among the split screens of the screen splitter 23 as key inputs. Screen division consisting of a selector switch 24 for selecting and a window pulse signal output unit 25 for outputting horizontal and vertical window pulse signals for the split screen selected by the selector switch 25 to the signal selector 13 Adjustment circuit using. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR9110323A 1991-06-19 1991-06-19 Iris controlling circuit KR930003305B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR9110323A KR930003305B1 (en) 1991-06-19 1991-06-19 Iris controlling circuit
GB9206650A GB2256990A (en) 1991-06-19 1992-03-26 Television camera automatic iris adjustable apparatus
JP4088481A JPH05167917A (en) 1991-06-19 1992-04-09 Automatic diaphragm adjusting device
DE4212515A DE4212515A1 (en) 1991-06-19 1992-04-14 AUTOMATIC IRIS DISPLAY ADJUSTMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR9110323A KR930003305B1 (en) 1991-06-19 1991-06-19 Iris controlling circuit

Publications (2)

Publication Number Publication Date
KR930000999A true KR930000999A (en) 1993-01-16
KR930003305B1 KR930003305B1 (en) 1993-04-24

Family

ID=19316099

Family Applications (1)

Application Number Title Priority Date Filing Date
KR9110323A KR930003305B1 (en) 1991-06-19 1991-06-19 Iris controlling circuit

Country Status (4)

Country Link
JP (1) JPH05167917A (en)
KR (1) KR930003305B1 (en)
DE (1) DE4212515A1 (en)
GB (1) GB2256990A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0142290B1 (en) * 1993-11-24 1998-06-15 김광호 Image improving method and its circuits
NZ513710A (en) * 2001-08-22 2003-02-28 Cardax Internat Ltd Metering system
DE102004047476B4 (en) * 2004-09-30 2014-05-08 Robert Bosch Gmbh Device and method for adjusting a camera

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555181A (en) * 1968-06-05 1971-01-12 Bell Telephone Labor Inc Automatic video level control employing iris and amplifier gain adjustments
JPS56119820A (en) * 1980-02-27 1981-09-19 Canon Inc Photometric system
JPS5741079A (en) * 1980-08-26 1982-03-06 Asahi Optical Co Ltd Automatic television camera exposure device by division of picture
JPS5783971A (en) * 1980-11-13 1982-05-26 Asahi Optical Co Ltd Spot exposure control circuit
GB2219461B (en) * 1988-05-02 1992-11-18 Canon Kk Exposure control device
KR910008286Y1 (en) * 1988-07-12 1991-10-15 삼성전자 주식회사 Auto-exposure control circuit of video camera
JPH02274073A (en) * 1989-04-14 1990-11-08 Fuji Photo Film Co Ltd Exposure control method
US5049997A (en) * 1989-04-10 1991-09-17 Fuji Photo Film Co., Ltd. Video camera exposure control method and apparatus for preventing improper exposure due to changing object size or displacement and luminance difference between the object and background

Also Published As

Publication number Publication date
JPH05167917A (en) 1993-07-02
GB2256990A (en) 1992-12-23
KR930003305B1 (en) 1993-04-24
GB9206650D0 (en) 1992-05-06
DE4212515A1 (en) 1992-12-24

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