KR900008842A - Automatic focusing device for CCD imaging devices - Google Patents

Automatic focusing device for CCD imaging devices Download PDF

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Publication number
KR900008842A
KR900008842A KR1019880015967A KR880015967A KR900008842A KR 900008842 A KR900008842 A KR 900008842A KR 1019880015967 A KR1019880015967 A KR 1019880015967A KR 880015967 A KR880015967 A KR 880015967A KR 900008842 A KR900008842 A KR 900008842A
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KR
South Korea
Prior art keywords
circuit
sensor
lens
signal processing
black level
Prior art date
Application number
KR1019880015967A
Other languages
Korean (ko)
Other versions
KR930001678B1 (en
Inventor
김은진
강복원
Original Assignee
안시환
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.)
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Application filed by 안시환, 삼성전자 주식회사 filed Critical 안시환
Priority to KR1019880015967A priority Critical patent/KR930001678B1/en
Publication of KR900008842A publication Critical patent/KR900008842A/en
Application granted granted Critical
Publication of KR930001678B1 publication Critical patent/KR930001678B1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024Details of scanning heads ; Means for illuminating the original
    • H04N1/02409Focusing, i.e. adjusting the focus of the scanning head
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024Details of scanning heads ; Means for illuminating the original
    • H04N1/028Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/03Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02452Arrangements for mounting or supporting elements within a scanning head
    • H04N2201/02454Element mounted or supported
    • H04N2201/02456Scanning element, e.g. CCD array, photodetector

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Focusing (AREA)

Abstract

내용 없음.No content.

Description

CCD촬상소자의 초점 자동조정장치Automatic focusing device for CCD imaging devices

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제6도는 본 발명의 전체 구성도.6 is an overall configuration diagram of the present invention.

제7도는 센서구동회로의 내부구성도.7 is an internal configuration diagram of a sensor driving circuit.

Claims (5)

점광렌즈와 두개의 미러를 이용한 광학장치의 초점조정장치에 있어서, 상기 두 미러사이에 OCD촬상소자센서를 접속하고, 상기 센서는 OCD흑레벨 기준값을 설정해주는 암출력보상회로와 증폭기를 통하여, 차동증폭회로로 구성된 가변지연회로와 비교기를 거쳐, 클램프회로 및 자동이득조정 증폭회로로 구성된 신호처리회로에 접속함과 아울러. CCD촬상소자의 출력레벨 쉬프트회로를 통하며, 상기 신호처리회로에 접속하고, 상기 신호처리회로는 렌즈구동회로에 접속하며, 상기 센서에 센서구동회로를 접속하고 상기 회로를 총괄 제어하는 제어회로로 구성하여 상의 샤프함을 비교하여 결상점(합초점)을 검출하고 이에따라 렌즈를 자동조절할 수 있도록 한 것을 특징으로 하는 CCD촬상소자의 초점 자동조정장치.In the focusing device of an optical device using a point light lens and two mirrors, an OCD imaging device sensor is connected between the two mirrors, and the sensor is differentially connected through an amplifier and a dark output compensation circuit which sets an OCD black level reference value. Through a variable delay circuit composed of an amplifier circuit and a comparator, it is connected to a signal processing circuit composed of a clamp circuit and an automatic gain adjustment amplifier circuit. Through a output level shift circuit of a CCD image pickup device, connected to the signal processing circuit, the signal processing circuit is connected to a lens driving circuit, and a control circuit for connecting a sensor driving circuit to the sensor and controlling the circuit as a whole. And an image focal point (confocal focus) is detected by comparing the sharpness of the image, and the lens is automatically adjusted accordingly. 제1항에 있어서, 센서구동회로는 신호발진회로와 논리회로들고 구성하여 센서구동신회(0SH, 0RS, 01, 02)를 발생시켜 CCD촬상소자센서와 제어회로에 공급하도록 구성된 것을 특징으로 하는 CCD촬상소자의 초점 자동 조정장치.The sensor driving circuit comprises a signal oscillating circuit and a logic circuit, and generates a sensor driving circuit (0SH, 0RS, 0 1 , 0 2 ) to supply the CCD image sensor and the control circuit. Automatic focusing device for CCD imaging devices. 제1항에 있어서, 암출력 보상회로는 스위치를 이용하여 흑레벨의 샘플을 취하고, 신호중에서 이 샘플의 양만큼 제거시켜 주어 리세트노이즈를 제거하도록 구성한 것을 특징으로 하는 CCD촬상소자의 초점 자동 조정장치.2. The automatic focus adjustment of a CCD image pickup device according to claim 1, wherein the dark output compensating circuit is configured to take a black level sample by using a switch and remove the sample noise in the signal to remove reset noise. Device. 제1항에 있어서, 쉬프트회로는 흑레벨을 클램프시키고, 흑레벨의 기준값을 OV로 천이시키도록 구성한것을특징으로 하는 CCD촬상소자의 초점 자동 조정장치.2. The apparatus according to claim 1, wherein the shift circuit is configured to clamp the black level and to shift the reference value of the black level to OV. 제1항에 있어서, 신호처리회로는 각 신호의 샤프함을 계산하여 X1지점이 합초점에 있는지 여부를 판정하여 렌즈를 전방 또는 후방으로 이동시키도록 제어회로를 통해 렌즈구동회로를 제어하는 것을 특징으로 하는 CCD촬상소자의 초점 자동조정장치.The method of claim 1, wherein the signal processing circuit calculates the sharpness of each signal to determine whether the X 1 point is at the confocal point and controls the lens driving circuit through the control circuit to move the lens forward or backward. Automatic focusing device for CCD imaging elements. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880015967A 1988-11-30 1988-11-30 Autofocus apparatus of ccd-image sensor KR930001678B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880015967A KR930001678B1 (en) 1988-11-30 1988-11-30 Autofocus apparatus of ccd-image sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880015967A KR930001678B1 (en) 1988-11-30 1988-11-30 Autofocus apparatus of ccd-image sensor

Publications (2)

Publication Number Publication Date
KR900008842A true KR900008842A (en) 1990-06-04
KR930001678B1 KR930001678B1 (en) 1993-03-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880015967A KR930001678B1 (en) 1988-11-30 1988-11-30 Autofocus apparatus of ccd-image sensor

Country Status (1)

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KR (1) KR930001678B1 (en)

Also Published As

Publication number Publication date
KR930001678B1 (en) 1993-03-08

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