KR940001713A - Image quality compensation circuit - Google Patents

Image quality compensation circuit Download PDF

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Publication number
KR940001713A
KR940001713A KR1019920010066A KR920010066A KR940001713A KR 940001713 A KR940001713 A KR 940001713A KR 1019920010066 A KR1019920010066 A KR 1019920010066A KR 920010066 A KR920010066 A KR 920010066A KR 940001713 A KR940001713 A KR 940001713A
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KR
South Korea
Prior art keywords
image quality
compensation circuit
signal
quality compensation
value
Prior art date
Application number
KR1019920010066A
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Korean (ko)
Other versions
KR0138142B1 (en
Inventor
백세현
Original Assignee
강진구
삼성전자 주식회사
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Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019920010066A priority Critical patent/KR0138142B1/en
Publication of KR940001713A publication Critical patent/KR940001713A/en
Application granted granted Critical
Publication of KR0138142B1 publication Critical patent/KR0138142B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Systems (AREA)

Abstract

화질보상회로는 고해상도 기록재생장치에서 영상신호의 전달매체로 사용되는 TCI시스템에 있어서 TCI디코드시 라인간의 색신호의 차값이 크므로 인하여 수직에지부분에서 색상이 흐려지는 것을 보상하기 위한 것이다. 이를 위하여 인가되는 채널신호에 분리된 색신호의 전후라인을 감산한 값과 소정의 기준값을 비교하기 위한 비교수단;전후라인의 평균값을 연산하여 출력하기 위한 평균값 연산수단;과 평균값 연산수단과 색신호의 전라인의 신호를 비교기의 출력신호에 의하여 제어되어 TCI디코드된 값으로 선택적으로 출력하기 위한 선택수단을 포함하도록 구성된다. 따라서 복원된 영상신호의 수직에지부분을 선명하게 재생시킬 수 있다.The image quality compensation circuit is used to compensate for color fading in the vertical edge part in the TCI system used as a transmission medium of a video signal in a high resolution recording and reproducing apparatus due to a large difference in color signals between lines during TCI decoding. To this end, comparison means for comparing a predetermined reference value with a value obtained by subtracting the front and rear lines of the separated color signal to the applied channel signal; an average value calculating means for calculating and outputting an average value of the front and rear lines; and an average value calculating means and the color signal And selecting means for selectively outputting the signal of phosphorus to the TCI decoded value controlled by the output signal of the comparator. Therefore, the vertical edge portion of the restored video signal can be reproduced clearly.

Description

화질보상회로Image quality compensation circuit

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

제1도는 일반적인 TCI(Time Compressed Intergration)시스템의 블럭도이다.FIG. 1 is a block diagram of a typical TCI (Time Compressed Intergration) system.

제6도는 본 발명에 따른 화질보상회로이다.6 is a picture quality compensation circuit according to the present invention.

제7도는 제6도의 회로를 적용한 TCI디코더의 출력신호의 형태이다.7 is a form of an output signal of the TCI decoder to which the circuit of FIG. 6 is applied.

Claims (4)

고해상도 기록재생시스템의 TCI디코드시 화질보상을 하기 위한 화질보상회로에 있어서;An image quality compensation circuit for performing image quality compensation upon TCI decoding of a high resolution recording and reproducing system; 인가되는 채널신호에서 분리된 색신호의 전후라인을 감산한 값과 색신호 변화정도를 판단할 수 있는 소정의 기준값을 비교하기 위한 비교 수단(53);Comparison means (53) for comparing a value obtained by subtracting the front and rear lines of the separated color signal from the applied channel signal and a predetermined reference value capable of determining the degree of change in the color signal; 상기 전후라인의 평균값을 연산하여 출력하기 위한 평균값 연산수단(52);과An average value calculating means 52 for calculating and outputting an average value of the front and rear lines; and 상기 비교수단(53)의 출력신호에 의하여 제어되어 상기 평균값 연산수단(52)과 상기 색신호의 전라인의 신호를 상기 TCI디코드된 값으로 선택적으로 출력하기 위한 선택수단(55)을 포함함을 특징으로 하는 화질 보상회로.Control means controlled by an output signal of the comparing means 53, and selecting means 55 for selectively outputting the average value calculating means 52 and the signals of all lines of the color signal to the TCI decoded value. Image quality compensation circuit. 제1항에 있어서, 상기 화질보상회로는 상기 색신호의 후라인신호를 검출하기 위하여 상기 색신호를 2수평주사라인기간동안 지연하기위한 지연수단(51)을 더 구비함을 특징으로 하는 화질보상회로.2. The image quality compensation circuit according to claim 1, wherein said image quality compensation circuit further comprises delay means (51) for delaying said color signal for two horizontal scanning line periods in order to detect a later line signal of said color signal. 제1항에 있어서, 상기 비교수단(53)의 기준값은 가변수단에 의하여 제공됨을 특징으로 하는 화질보상회로.The image quality compensation circuit according to claim 1, wherein the reference value of said comparing means (53) is provided by variable means. 제1항에 있어서, 상기 비교수단(53)은 상기 감산한 값에 대한 절대치와 상기 기준값을 비교함을 특징으로 하는 화질보상회로.2. The image quality compensation circuit according to claim 1, wherein the comparing means (53) compares the absolute value of the subtracted value with the reference value. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920010066A 1992-06-10 1992-06-10 Image quality compensation circuit KR0138142B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920010066A KR0138142B1 (en) 1992-06-10 1992-06-10 Image quality compensation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920010066A KR0138142B1 (en) 1992-06-10 1992-06-10 Image quality compensation circuit

Publications (2)

Publication Number Publication Date
KR940001713A true KR940001713A (en) 1994-01-11
KR0138142B1 KR0138142B1 (en) 1998-05-15

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ID=19334482

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920010066A KR0138142B1 (en) 1992-06-10 1992-06-10 Image quality compensation circuit

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KR (1) KR0138142B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100874627B1 (en) * 2003-02-28 2008-12-17 아사히 가라스 가부시키가이샤 Fluorine-containing copolymers for paints, paint compositions and paints

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100874627B1 (en) * 2003-02-28 2008-12-17 아사히 가라스 가부시키가이샤 Fluorine-containing copolymers for paints, paint compositions and paints

Also Published As

Publication number Publication date
KR0138142B1 (en) 1998-05-15

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