KR930022817A - Image reading device and control method - Google Patents

Image reading device and control method

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Publication number
KR930022817A
KR930022817A KR1019920007461A KR920007461A KR930022817A KR 930022817 A KR930022817 A KR 930022817A KR 1019920007461 A KR1019920007461 A KR 1019920007461A KR 920007461 A KR920007461 A KR 920007461A KR 930022817 A KR930022817 A KR 930022817A
Authority
KR
South Korea
Prior art keywords
error
image reading
detected error
charge accumulation
time difference
Prior art date
Application number
KR1019920007461A
Other languages
Korean (ko)
Other versions
KR100213473B1 (en
Inventor
이성덕
Original Assignee
정용문
삼성전자 주식회사
Filing date
Publication date
Application filed by 정용문, 삼성전자 주식회사 filed Critical 정용문
Priority to KR1019920007461A priority Critical patent/KR100213473B1/en
Priority claimed from KR1019920007461A external-priority patent/KR100213473B1/en
Publication of KR930022817A publication Critical patent/KR930022817A/en
Application granted granted Critical
Publication of KR100213473B1 publication Critical patent/KR100213473B1/en

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Abstract

본 발명은 원고로 부터 화상을 독취하는 화상독취장치 및 그 제어방법에 관한 것으로, 광원의 광량이 정상수준인가를 검출하는 수단과, 장치의 초기화완료 및 주사준비완료를 알리는 표시수단과, 광원의 광량이 정상수준이 아닌경우 메모리를 사용하여 백기준데이타의 최대치를 검출하고 기준차와의 오차를 구하여 노광시간을 제어하는 수단을 포함하여 구성됨으로써 광량보상을 노광시간제어를 통하여 자동으로 보상하고 최적의 화질을 얻을 수 있는 것이 특징이다.The present invention relates to an image reading apparatus for reading an image from an original and a control method thereof, comprising: means for detecting whether a light quantity of a light source is at a normal level, display means for informing that the device is initialized and ready for scanning, and If the amount of light is not normal, it includes a means for detecting the maximum value of the white reference data using a memory and obtaining an error from the reference difference to control the exposure time. It is characterized by the image quality.

Description

화상독취장치 및 제어방법Image reading device and control method

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

제1도는 본 발명이 적용되는 시스템의 개략적인 구성을 나타낸 블럭도, 제2도는 본 발명의 구성을 나타낸 블럭도, 제3도는 주위온도에 따른 형광등의 광량과 시간의 관계를 나타낸 도면.FIG. 1 is a block diagram showing a schematic configuration of a system to which the present invention is applied, FIG. 2 is a block diagram showing the configuration of the present invention, and FIG. 3 is a view showing a relationship between light quantity and time of a fluorescent lamp according to ambient temperature.

Claims (4)

광원과, 광전변환하는 CCD센서수단과, 이 센서수단의 출력을 증폭하는 증폭수단과, 이 증폭수단의 출력을 디지탈데이타신호로 변환하는 A/D변환수단 및, 상기 센서수단에 전하축적시간을 나타내는 전하축적신호를 제공하는 클럭발생수단을 포함하는 화상독취장치에 있어서, 상기 A/D변환수단으로부터 제공되는 데이타신호를 받아들여 저장하는 메모리수단과, 상기 메모리수단에 저장된 데이타중 최대값을 갖는 데이타를 검출하고, 상기 최대값을 기준값과 비교하고 오차를 검출하여 전하축적시간차를 구하고, 이 전하축적시간차에 의해 상기 클럭발생수단으로부터 출력되는 상기 전하 축적시간을 제어하는 제어수단 및, 상기 기준값과 상기 전하욱적시간차로 변환시키는 룩업테이블수단을 포함하는 것을 특징으로 하는 화상독취장치.A light source, a CCD sensor means for photoelectric conversion, an amplification means for amplifying the output of the sensor means, an A / D conversion means for converting the output of the amplification means into a digital data signal, and a charge accumulation time for the sensor means. An image reading apparatus comprising clock generation means for providing a charge accumulation signal, the memory reading means comprising: memory means for receiving and storing a data signal provided from the A / D conversion means, and having a maximum value among data stored in the memory means; Control means for detecting data, comparing the maximum value with a reference value, detecting an error to obtain a charge accumulation time difference, and controlling the charge accumulation time output from the clock generating means by the charge accumulation time difference; And look-up table means for converting the charge tracking time difference. 제1항에 있어서, 상기 제어수단에 의해 제어되어 초기화의 완료와 상기 광원의 광량이 정상임을 알리는 표시 수단을 푸가로 포함하는 것을 특징으로 하는 화상독취장치.The image reading apparatus according to claim 1, further comprising display means controlled by the control means to indicate that the initialization is completed and that the light amount of the light source is normal. 디지탈화상처리시스템에서 화상독취를 제어하는 방법에 있어서, 전원이 인가됨과 동시에 장치를 초기화하고 초기화가 완료되었음을 표지하는 단계와, 광원을 점등시키는 단계와, 백기준데이타의 최대값을 구하여 기준값과 비교하여 오차를 검출하는 단계와, 검출된 오차가 소정의 허용오차의 범위내에 속하는지 여부를 판별하는 단계와, 상기 검출된 오차가 상기 허용오차의 멈위내에 속하면 주사 준비완료를 표시하고 원고주사명령이 있는지 여부를 판별하는 단계와, 상기 검출된 오차가 상기 호용오차의 범위내에 속하지 않으면 상기 원고주사명령이 있는지 여부를 판별하는 단게와, 상기 검출된 오차가 상기 허용오차의 범위내에 속하면서 상기 원고주사명령이 있으면 원고주사를 수행하고, 상기 검출된 오차가 상기 허용오차의 범위내에 속하지 않으면서 상기 원고주사명령이 있으면 광량보정을 수행한 후 상기 원고주사를 수행하는 단계를 포함하는 것을 특징으로 하는 화상독취제어방법.A method of controlling image reading in a digital image processing system, the method comprising: initializing a device at the same time as power is applied and indicating that the initialization is completed; turning on a light source; and obtaining a maximum value of white reference data and comparing the reference value with a reference value. Detecting an error; determining whether the detected error is within a predetermined tolerance range; and if the detected error is within the tolerance, the scan preparation is completed and a document scanning instruction is issued. Determining whether there is a document scanning command if the detected error does not fall within the range of the error, and if the detected error falls within the range of the tolerance. If there is, the document scanning is performed, and the detected error does not fall within the tolerance range. It flew after performing the light amount correction, if the original scan command, the image reading control method comprising the step of performing said scanning originals. 제3항에 있어서, 상기 광량보정단계는, 상기 검출된 오차에 해당하는 전압편차를 구하는 단계와, 상기 전압편차로부터 노광시간차를 구하여 노광시간을 수정하는 단계와, 상기 수정된 노광시간을 전하축적시간으로서 전송하는 단계를 포함하는 것을 특징으로 하는 화상독취제어방법.The method of claim 3, wherein the light amount correcting step comprises: obtaining a voltage deviation corresponding to the detected error, correcting an exposure time by obtaining an exposure time difference from the voltage deviation, and accumulating the corrected exposure time. And transmitting as time. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920007461A 1992-04-30 1992-04-30 Image scanning apparatus and controlling method KR100213473B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920007461A KR100213473B1 (en) 1992-04-30 1992-04-30 Image scanning apparatus and controlling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920007461A KR100213473B1 (en) 1992-04-30 1992-04-30 Image scanning apparatus and controlling method

Publications (2)

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KR930022817A true KR930022817A (en) 1993-11-24
KR100213473B1 KR100213473B1 (en) 1999-08-02

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KR1019920007461A KR100213473B1 (en) 1992-04-30 1992-04-30 Image scanning apparatus and controlling method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030047221A (en) * 2001-12-08 2003-06-18 삼성전자주식회사 Image reading device and image reading method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030047221A (en) * 2001-12-08 2003-06-18 삼성전자주식회사 Image reading device and image reading method thereof

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