KR970056979A - Method and device for adjusting brightness of video camera - Google Patents

Method and device for adjusting brightness of video camera Download PDF

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Publication number
KR970056979A
KR970056979A KR1019950062091A KR19950062091A KR970056979A KR 970056979 A KR970056979 A KR 970056979A KR 1019950062091 A KR1019950062091 A KR 1019950062091A KR 19950062091 A KR19950062091 A KR 19950062091A KR 970056979 A KR970056979 A KR 970056979A
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KR
South Korea
Prior art keywords
light
voltage
brightness
video camera
unit
Prior art date
Application number
KR1019950062091A
Other languages
Korean (ko)
Inventor
한재옥
Original Assignee
구자홍
Lg 전자주식회사
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 구자홍, Lg 전자주식회사 filed Critical 구자홍
Priority to KR1019950062091A priority Critical patent/KR970056979A/en
Publication of KR970056979A publication Critical patent/KR970056979A/en

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10Details of semiconductor or other solid state devices to be connected
    • H01L2924/11Device type
    • H01L2924/12Passive devices, e.g. 2 terminal devices
    • H01L2924/1203Rectifying Diode
    • H01L2924/12035Zener diode

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  • Studio Devices (AREA)

Abstract

본 발명은 비디오 카메라에 관한 것으로, 종래에는 렌즈(LENS)를 통하여 입사되는 관량이 충분할 경우에 라이트(DC-LIGHT)를 온시키게 되면 불필요한 전력의 낭비를 일으켜 비디오 카메라 내부에 장착된 배터리의 사용시간의 단축을 초래하며, 광량이 부족할때 라이트(DC-LIGHT)가 오프상태에 있게되면 노이즈 성분이 밝기 정보와 같이 증폭되는 문제점이 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video camera. In the related art, when the light incident on the lens (LENS) is sufficient, turning on the light (DC-LIGHT) causes unnecessary waste of power, and thus the use time of the battery mounted in the video camera. If the light (DC-LIGHT) is turned off when the amount of light is insufficient, there is a problem that the noise component is amplified together with the brightness information.

따라서, 본 발명은 렌즈를 통하여 입사되는 광량에 따라 라이트 구동부를 자동으로 온/오프시키고, 또한 라이트의 밝기를 조절함으로써, 라이트에서 소비되는 불필요한 전력의 낭비를 방지하여 비디오 카메라 내부에 장착된 배터리를 효율적으로 사용하며, 저조도에서도 노이즈 성분이 밝기 정보와 같이 증폭되는 것을 방지하였다.Therefore, the present invention automatically turns on / off the light driver according to the amount of light incident through the lens, and also adjusts the brightness of the light, thereby preventing unnecessary waste of power consumed by the light, thereby reducing the battery installed in the video camera. It is used efficiently and prevents noise components from being amplified with brightness information even in low light.

Description

비디오 카메라의 밝기 조절방법 및 장치Method and device for adjusting brightness of video camera

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

제2도는 본 발명 비디오 카메라의 밝기 조절장치의 구성도2 is a block diagram of a brightness control device of a video camera of the present invention

제3도는 본 발명 비디오 카메라의 밝기 조절방법에 대한 동작 흐름도3 is a flowchart illustrating a method of adjusting brightness of a video camera according to the present invention.

Claims (5)

조리개의 위치를 고정한 후 입사되는 광량에 따른 밝기의 데이타값과 설정값을 비교하는 과정과,상기 과정의 비교결과 상기 데이타값이 설정값보다 크면 라이트의 밝기를 증가하고 설정값보다 작으면 라이트의 밝기를 감소하는 과정으로 이루어짐을 특징으로 하는 비디오 카메라의 밝기 조절방법.Comparing the data value and the setting value of the brightness according to the amount of incident light after fixing the position of the iris; and comparing the process results in increasing the brightness of the light if the data value is greater than the setting value and How to adjust the brightness of the video camera, characterized in that the process of reducing the brightness. 렌즈(LENS)로부터 입사되는 광량에 의한 밝기 정보를 전기적 신호로 변환하는 촬상소자와, 이 변환된 전기적 아날로그 신호를 디지탈 신호로 변환하는 아날로그/디지탈 변환기와,조리개의 위치를 일정한 값으로 설정하고, 상기 디지탈 신호를 전압으로 변환하여 출력하는 제어부와, 라이트(DC-LIGHT)를 구동하는 라이트 구동부와, 입력전압(DC)을 공급받아 기준전압을 설정하고 이 기준전압과 상기 제어부의 출력전압을 비교판단하는 비교부와, 상기 비교부의 결과에 따라 상기 라이트 구동부로 공급할 입력전압(DC)크기를 조절하는 스위칭부로 구성하여 된 것을 특징으로 하는 비디오 카메라의 밝기 조절장치.An image pickup device for converting brightness information by the amount of light incident from the lens LENS into an electrical signal, an analog / digital converter for converting the converted electrical analog signal into a digital signal, and a position of the iris to a constant value, A control unit for converting and outputting the digital signal into a voltage, a light driving unit for driving a light (DC-LIGHT), an input voltage (DC) supplied thereto, and setting a reference voltage and comparing the reference voltage with the output voltage of the control unit. And a switching unit configured to determine a comparison unit and a switching unit that adjusts an input voltage (DC) size to be supplied to the light driver based on a result of the comparison unit. 제2항에 있어서, 비교부는 입력전압(DC)과 연결된 전압제한용 저항과, 상기 저항과 직렬 연결되어 기준 전압을 설정하는 제너다이오드와, 상기 제너다이오드의 전압과 상기 제어부의 출력전압을 비교하는 비교수단으로 구성하여 된 것을 특징으로 하는 비디오 카메라의 밝기 조절장치.3. The method of claim 2, wherein the comparing unit compares a voltage limiting resistor connected to an input voltage DC, a zener diode connected in series with the resistor to set a reference voltage, and a voltage of the zener diode and an output voltage of the controller. The brightness control device of a video camera, characterized in that configured as a comparison means. 제3항에 있어서, 상기 비교수단은 상기 제너다이오드의 전압을 비반전단자로 입력받고 상기 제어부의 출력전압을 반전단자로 입력받아 이를 비교하는 비교기(COM)인 것을 특징으로 하는 비디오 카메라의 밝기 조절 장치.The brightness control of a video camera according to claim 3, wherein the comparing means is a comparator (COM) which receives the voltage of the zener diode as a non-inverting terminal and receives the output voltage of the control unit as an inverting terminal and compares them. Device. 제2항에 있어서, 스위칭부는 상기 비교부의 출력단자에 연결된 전류제한 저할과, 상기 비교부의 출력에 의해 스위칭 동작을 하는 제1스위칭 트랜지스터와, 이 제1스위칭 즈랜지스터의 동작에 따라 입력전압의 크기를 조절하는 제2스위칭 트랜지스터로 구성하여 된 것을 특징으로 하는 비디오 카메라의 밝기 조절장치.3. The switching unit of claim 2, wherein the switching unit reduces the current limit connected to the output terminal of the comparator, a first switching transistor configured to perform a switching operation by an output of the comparator, and an input voltage according to the operation of the first switching z transistor. The brightness control device of a video camera, characterized in that consisting of a second switching transistor for adjusting the size. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950062091A 1995-12-28 1995-12-28 Method and device for adjusting brightness of video camera KR970056979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950062091A KR970056979A (en) 1995-12-28 1995-12-28 Method and device for adjusting brightness of video camera

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Application Number Priority Date Filing Date Title
KR1019950062091A KR970056979A (en) 1995-12-28 1995-12-28 Method and device for adjusting brightness of video camera

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KR970056979A true KR970056979A (en) 1997-07-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100727893B1 (en) * 2005-01-21 2007-06-14 주식회사 에스원 Image monitoring system and method for monitoring image
US12088921B2 (en) 2021-06-16 2024-09-10 Samsung Electronics Co., Ltd. Electronic device for reducing low-light noise and method for operating the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100727893B1 (en) * 2005-01-21 2007-06-14 주식회사 에스원 Image monitoring system and method for monitoring image
US12088921B2 (en) 2021-06-16 2024-09-10 Samsung Electronics Co., Ltd. Electronic device for reducing low-light noise and method for operating the same

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