KR920013011A - Auto Focusing Near Field Control from Camera - Google Patents

Auto Focusing Near Field Control from Camera Download PDF

Info

Publication number
KR920013011A
KR920013011A KR1019900022770A KR900022770A KR920013011A KR 920013011 A KR920013011 A KR 920013011A KR 1019900022770 A KR1019900022770 A KR 1019900022770A KR 900022770 A KR900022770 A KR 900022770A KR 920013011 A KR920013011 A KR 920013011A
Authority
KR
South Korea
Prior art keywords
signal
decoder
comparator
converter
motor
Prior art date
Application number
KR1019900022770A
Other languages
Korean (ko)
Other versions
KR920011062B1 (en
Inventor
이원규
Original Assignee
이헌조
주식회사 금성사
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 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019900022770A priority Critical patent/KR920011062B1/en
Publication of KR920013011A publication Critical patent/KR920013011A/en
Application granted granted Critical
Publication of KR920011062B1 publication Critical patent/KR920011062B1/en

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B13/00Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32Means for focusing
    • G03B13/34Power focusing
    • G03B13/36Autofocus systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

내용 없음No content

Description

카메라에서의 자동초점 근거리 제어장치Auto Focusing Near Field Control from Camera

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

제1도는 본 발명 장치의 자동초점 근거리 제어 회로도, 제2도는 본 발명 장치를 설명하기 위한 타임챠트.1 is an autofocus near field control circuit diagram of the apparatus of the present invention, and FIG. 2 is a time chart for explaining the apparatus of the present invention.

Claims (2)

피사체와의 거리를 측정하기 위해 소정의 빛을 방사시키는 발광기(IRED)와, 상기 발광기(IRED)에서 방사된 피사체의 반사광을 수광하는 수광기(PSD)와, 상기 수광기(PSD)에서 검출된 신호를 인가맘아디코더(5)가 인식할 수 있도록 디지탈화 시키는 인터페이스(1)와, 발진기(3)에서 발진된 소정의 주파수를 인터페이스(1)와 디코더(5)및 A/D변환기(7)가 구동하는 신호로 분주시키는 클록변환기(2)와, 검출부(8)의 펄스를 입력받아 디지탈 신호로 변환시키는 A/D변환기(7)와, 상기 A/D변환기(7)의 디지탈 신호와 인터페이스(1)에서 츨력되는 신호 상태를 판독하여 구형파 펄스로 디코딩시키는 디코더(5)와, 상기 디코더(5)의 출력신호중에서 하이 펄스에서만 동작하여 비교기(9)의 비반전입력단의 기준전압을 제어시키는 전자 스위치(MS)와 상기 디코더(5)를 통한 A/D변환 신호와 수광기(PSD)에서 검출된 출력신호를 비교시키는 비교기(9)와, 상기 비교기(9)의 출력제어 신호에 따라 온/오프되는 트랜지스터(Q1)로 구성된 자동초점 경통 구동 제어회로에 있어서, 무한대 촬영 또는 근거리 촬영을 선택하는 스위치(SW1)와, 상기 스위치(SW1)의 입력상태를 감지하여 무한대 촬영 또는 근거리 촬영 모드에 대응하는 측거리를 행하거나 또는 무한대시에 근거리로 인식시키는 홀드제어부(4)와, 상기 A/D변환기(7)를 통한 검출부(8)의 검출신호와 디코더(5)에서 비교하기 위한 기본적인 8개의 펄스데이타를 저장시키는 메모리부(6)와, 상기 비교기(9)의 비반전입력단에 인가되는 디코더(5)의 출력신호를 비교기(9)가 인식할 수 있도록 시간을 체배시키는 전자스위치군(MS)과, 상기 트랜지스터(Q1)의 온/오프 동작에 따라 촬영 렌즈를 이동시키도록 동력을 발생시키는 모터(10)와, 상기 모터(10)가 회전될때 그와 연동되는 슬라이드 기어(g5)의 슬리트 (SL)를 감시하여 발생된 펄스와 메모리부(6)에 저장된 데이타와 일치될 때 트랜지스터(Q1)및 모터(10)를 오스피키는 검출부(8)를 포함하여 구성됨을 특징으로 하는 카메라에서의 자동초점 근거리 제어장치.The light emitter IRD emits a predetermined light to measure the distance to the subject, the light receiver PSD receives the reflected light of the subject emitted from the light emitter IRD, and the light receiver PSD is detected by the light receiver PSD. The interface 1 and the decoder 5 and the A / D converter 7 digitize a predetermined frequency oscillated by the oscillator 3 and the interface 1 for digitizing the signal to be recognized by the application mom decoder 5. A clock converter 2 for dividing the signal into a driving signal, an A / D converter 7 for receiving a pulse from the detector 8 and converting the signal into a digital signal, and a digital signal and interface of the A / D converter 7 ( A decoder 5 which reads the signal state output from 1) and decodes it into square wave pulses, and an electron which operates only at a high pulse among the output signals of the decoder 5 to control the reference voltage of the non-inverting input terminal of the comparator 9; A / D conversion signal through the switch MS and the decoder 5 Be in the light receiver (PSD) of the output signal the comparator (9) for comparing the auto focus lens barrel drive control circuit is configured to on / off the transistor (Q 1) that is in accordance with the output control signal of the comparator (9) is detected in, A switch SW 1 for selecting infinity shooting or near-field photography, and a sensing distance detected by an input state of the switch SW 1 to perform a side distance corresponding to an infinity-shooting or near-shooting mode, or to recognize a short range at infinity. A memory unit 6 for storing eight basic pulse data for comparison by the control unit 4, the detection signal of the detection unit 8 through the A / D converter 7, and the decoder 5, and the comparator ( The electronic switch group MS multiplies the time so that the comparator 9 can recognize the output signal of the decoder 5 applied to the non-inverting input terminal of 9) and the on / off operation of the transistor Q 1 . To move the shooting lens A pulse generated by monitoring the slit SL of the motor 10 generating power and the slide gear g 5 interlocked with the motor 10 when the motor 10 rotates, and the data stored in the memory unit 6; An apparatus for autofocusing near field control in a camera, characterized in that it comprises a detection unit (8) which oppis the transistor (Q 1 ) and the motor (10) when matched. 제1항에 있어서, 상기 검출부(8)는 포토 커플러(트다이오드 및 포토 트랜지스터)로 구성됨을 특징으로 하는 카메라에서의 자동초점 근거리 제어장치.The apparatus of claim 1, wherein the detection unit (8) comprises photo couplers (t diodes and photo transistors). ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019900022770A 1990-12-31 1990-12-31 Auto-focus control apparatus for a camera KR920011062B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900022770A KR920011062B1 (en) 1990-12-31 1990-12-31 Auto-focus control apparatus for a camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900022770A KR920011062B1 (en) 1990-12-31 1990-12-31 Auto-focus control apparatus for a camera

Publications (2)

Publication Number Publication Date
KR920013011A true KR920013011A (en) 1992-07-28
KR920011062B1 KR920011062B1 (en) 1992-12-26

Family

ID=19309190

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900022770A KR920011062B1 (en) 1990-12-31 1990-12-31 Auto-focus control apparatus for a camera

Country Status (1)

Country Link
KR (1) KR920011062B1 (en)

Also Published As

Publication number Publication date
KR920011062B1 (en) 1992-12-26

Similar Documents

Publication Publication Date Title
US4855585A (en) Distance measuring apparatus
US4383274A (en) Automatic focus controlling device
US4482235A (en) Automatic focusing device for camera
US4720723A (en) Distance measuring device
KR920008531A (en) Electronic still camera
US4465352A (en) Automatic focusing device
US4538892A (en) Automatic focus control system
KR920003093A (en) Auto focus matching device
US4573783A (en) Focusing controlling device
KR920013011A (en) Auto Focusing Near Field Control from Camera
US4286850A (en) Automatic focus indicating device for camera
US4521093A (en) Automatic focusing device used in combination with auxiliary light source
US4284336A (en) Automatic focusing camera
US4816858A (en) Automatic focusing cameras
JPH0470614B2 (en)
JP2970902B2 (en) Automatic focusing device
JPS61144615A (en) Automatic focus detector
US4613225A (en) Automatic focusing device
JPH08226969A (en) Phase difference measuring apparatus and shielding plate controller for light wave rangefinder
JPS58161579A (en) Automatic focusing device
JP2713880B2 (en) Distance measuring device
JPS58172607A (en) Automatic focusing camera
JPH07104156B2 (en) Distance measuring device
JPS6113565B2 (en)
JPS60259907A (en) Distance detector with deviation detecting function

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19971229

Year of fee payment: 7

LAPS Lapse due to unpaid annual fee