KR960028212A - Light auto on / off circuit of video camera - Google Patents
Light auto on / off circuit of video camera Download PDFInfo
- Publication number
- KR960028212A KR960028212A KR1019940038700A KR19940038700A KR960028212A KR 960028212 A KR960028212 A KR 960028212A KR 1019940038700 A KR1019940038700 A KR 1019940038700A KR 19940038700 A KR19940038700 A KR 19940038700A KR 960028212 A KR960028212 A KR 960028212A
- Authority
- KR
- South Korea
- Prior art keywords
- light
- output
- camera
- inverting
- resistor
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
- H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
본 발명은 어두운 곳에서 촬영시 빛의 양이 설정된 기준치보다 적어지면 자동적으로 라이트를 온시켜 최적의 조건에서 촬영 할 수 있도록 한 비디오 카메라의 라이트 자동 온/오프 회로에 관한 것으로 렌즈를 통해 입력된 영상 신호를 전기적 신호로 변환시키는 전하 결합 소자(1)와, 상기 전하 결합 소자(1)의 출력 파형을 정형 시키는 도우 패스 필터(2)와, 상기 로우 패스 필터(2)의 출력을 반전 증폭시키는 수단(3)과, 상기 반전 증폭 수단(3)의 출력에 따라 조리개 모터(5)를 동시키는 조리개 모터 구동부(4)와, 상기 로우 패스 필터(2)의 출력 전압과 기준전압을 비교하는 비교 수단(6)과, 비디오 카메라의 일측면에 부착되어 빛를 감지하는 빛 감지 수단(7)과, 상기 비교 수단(16)과 빛 감지 수단(7)의 출력 신호를 입력받아 일정한 진리표에 따른 출력을 내보내도록 제어하는 마이컴(8)과, 상기 마이컴(8)의 출력에 따라점/소등되는 카메라 라이트(9)와, 상기 카메라 라이드(9)에 전원을 공급해 주는 카메라 라이트 전원(10)을 포함하여 이루어진다.The present invention relates to a light automatic on / off circuit of a video camera that automatically turns on the light when the amount of light becomes less than the set reference value when shooting in a dark place, so that the light can be taken under the optimal conditions. A charge coupling element 1 for converting a signal into an electrical signal, a dough pass filter 2 for shaping an output waveform of the charge coupling element 1, and means for inverting and amplifying the output of the low pass filter 2; (3), a diaphragm motor driver 4 for driving the diaphragm motor 5 in accordance with the output of the inverting and amplifying means 3, and a comparison means for comparing the output voltage and the reference voltage of the low pass filter 2 with each other. (6), the light sensing means (7) attached to one side of the video camera to sense light, and the output signal of the comparing means (16) and the light sensing means (7) receives the output according to a certain truth table A microcomputer 8 for locking control, a camera light 9 that is turned on / off according to the output of the microcomputer 8, and a camera light power source 10 for supplying power to the camera ride 9. .
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 종래의 비디오 카메라의 라이트 제어 회로도, 제2도는 본 발명에 따른 비디오 카메라 라이트 자동 온/오프 회로도, 제3도는 본 발명에 따른 진리표를 나타낸 도면.1 is a light control circuit diagram of a conventional video camera, FIG. 2 is a video camera light automatic on / off circuit diagram according to the present invention, and FIG. 3 is a truth table according to the present invention.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940038700A KR960028212A (en) | 1994-12-29 | 1994-12-29 | Light auto on / off circuit of video camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940038700A KR960028212A (en) | 1994-12-29 | 1994-12-29 | Light auto on / off circuit of video camera |
Publications (1)
Publication Number | Publication Date |
---|---|
KR960028212A true KR960028212A (en) | 1996-07-22 |
Family
ID=66769420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940038700A KR960028212A (en) | 1994-12-29 | 1994-12-29 | Light auto on / off circuit of video camera |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR960028212A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100573594B1 (en) * | 1998-12-30 | 2006-08-03 | 삼성테크윈 주식회사 | Digital CD camera capable of identifying low luminance image and its control method |
-
1994
- 1994-12-29 KR KR1019940038700A patent/KR960028212A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100573594B1 (en) * | 1998-12-30 | 2006-08-03 | 삼성테크윈 주식회사 | Digital CD camera capable of identifying low luminance image and its control method |
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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |