KR920007431A - Method and device for improving vertical resolution of NTSC video signal - Google Patents

Method and device for improving vertical resolution of NTSC video signal Download PDF

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Publication number
KR920007431A
KR920007431A KR1019900015424A KR900015424A KR920007431A KR 920007431 A KR920007431 A KR 920007431A KR 1019900015424 A KR1019900015424 A KR 1019900015424A KR 900015424 A KR900015424 A KR 900015424A KR 920007431 A KR920007431 A KR 920007431A
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KR
South Korea
Prior art keywords
signal
video signal
field
converter
vertical resolution
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KR1019900015424A
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Korean (ko)
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KR0138100B1 (en
Inventor
윤종경
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강진구
삼성전자 주식회사
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Priority to KR1019900015424A priority Critical patent/KR0138100B1/en
Publication of KR920007431A publication Critical patent/KR920007431A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/14Picture signal circuitry for video frequency region

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

Abstract

내용 없음No content

Description

NTSC 영상신호의 수직 해상도 개선 방법 및 장치Method and device for improving vertical resolution of NTSC video signal

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

제3도는 본 발명의 구성도3 is a block diagram of the present invention

제4도는 각 필드간의 동기 신호 위치도.4 is a position diagram of synchronization signals between fields.

Claims (3)

NTSC 영상 신호의 수직 해상도 개선장치에 있어서, 아날로그의 영상 휘도신호(Y)를 디지탈 신호로 변환하는 A/D변환부(1)와, 상기 A/D 변환부(1)의 출력을 프레임 단위로 저장하는 프레임 메모리(2)와, 상기 A/D 변환부(1) 및 프레임 메모리(2)의 출력을 입력하여 차신호를 발생하는 감산기(3)와, 상기 감산기(3)의 출력을 입력하여 절대치로 환산하여 양수로 변환하는 절대치 변환부(4)와, 상기 절대치 변환부(4)의 출력을 일정기준 레벨과 비교하여 동화면 유무를 나타내는 제1 및 제2 제어신호를 발생하는 동화 판별부(5)와, 상기 동화판별부(5)의 출력이 제1제어신호일시 프레임 구분 신호에 의해 제1 및 제2선택신호를 수차적으로 발생하는 게이트(6)와, 상기 A/D변환부(1)의 제1 및 제2필드 신호의 주기를 소정 지연하는 수평 지연기(7)와, 상기 게이트(6)의 제1 및 제2 선택신호에 의해 지연기(7) 및 A/D변환부 (1)의 출력을 순차적으로 선택하여 제1-제4필드의 1화면 신호를 출력하는 멀티플렉서(8)로 구성됨을 특징으로 하는 NTSC영상 신호의 수직 해상도 개선장치.An apparatus for improving the vertical resolution of an NTSC video signal, comprising: an A / D converter (1) for converting an analog video luminance signal (Y) into a digital signal, and the output of the A / D converter (1) in units of frames Inputs the frame memory 2 to be stored, the subtractor 3 for generating the difference signal by inputting the outputs of the A / D converter 1 and the frame memory 2, and the output of the subtractor 3 An absolute value converting unit 4 for converting an absolute value into a positive number and a moving picture discriminating unit for generating first and second control signals indicating the presence or absence of a moving picture by comparing the output of the absolute value converting unit 4 with a predetermined reference level. (5), the gate 6 for outputting the moving picture discrimination section 5 aberrationally generating the first and second selection signals by the first control signal temporal frame division signal, and the A / D conversion section. A horizontal delay unit 7 for delaying a predetermined period of the first and second field signals of (1) and the first and second lines of the gate 6; NTSC image, characterized in that it consists of a multiplexer (8) which sequentially selects the outputs of the delay unit (7) and the A / D converter (1) according to the tack signal and outputs one screen signal of the first to fourth fields. Improved vertical resolution of the signal. 제1항에 있어서, 수평 지연기(7)와 ¼수평등기 주기로 영상신호를 지연시키도록 동작함을 특징으로 하는 NTSC 영상 신호의 수직 해상도 개선장치.An apparatus for improving the vertical resolution of an NTSC video signal according to claim 1, characterized in that it operates to delay the video signal at a horizontal delay (7) and quarter horizontal equalizer period. 현 입력 프레임의 제1 및 제2필드 신호를 디지탈 변환하는 A/D 변환부와, 상기 A/D변환부의 출력을 프레임 단위로 저장하는 프레임 메모리를 구비한 NTSC 영상신호의 수직 해상도 개선방법에 있어서, 현 프레임 영상신호와 상기 프레임 메모리의 전 프레임 영상신호의 차신호를 발생하는 과정과, 상기 차신호의 레벨에 의해 동화면 유무를 판별하여 동화면일시 제어신호를 발생하는 과정과, 상기 과정에서 동화면 제어신호일시에만 프레임 구분 신호에 의해 제1 및 제2선택신호를 순차적으로 출력하는 과정과, 상기 현프레임의 제 1 및 제2필드 신호를 제3및 제4필드 신호로 변환하기 위하제 ¼수평주기로 지연시키는 과정과, 상기 제1-제4필드 신호를 상기 제1 및 제2선택신호에 의해 제1필드, 제3필드, 제2필드, 제4필드 신호의 순서로 선택 출력하는 과정으로 이루어짐을 특징으로 하는 NTSC 영상신호의 수직 해상도 개선방법.A method for improving the vertical resolution of an NTSC video signal having an A / D converter for digitally converting first and second field signals of a current input frame and a frame memory for storing the output of the A / D converter in units of frames. Generating a difference signal between a current frame video signal and a previous frame video signal of the frame memory; determining whether there is a moving picture based on the level of the difference signal, and generating a moving picture temporary control signal; A process of sequentially outputting the first and second selection signals based on the frame division signal only at the time of the moving picture control signal, and for converting the first and second field signals of the current frame into third and fourth field signals. Delaying in a ¼ horizontal period and selectively outputting the first to fourth field signals in order of a first field, a third field, a second field, and a fourth field signal by the first and second selection signals; By this A method of improving the vertical resolution of an NTSC video signal characterized by a lagging. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900015424A 1990-09-28 1990-09-28 Vertical resolution improving apparatus of television image signal KR0138100B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900015424A KR0138100B1 (en) 1990-09-28 1990-09-28 Vertical resolution improving apparatus of television image signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900015424A KR0138100B1 (en) 1990-09-28 1990-09-28 Vertical resolution improving apparatus of television image signal

Publications (2)

Publication Number Publication Date
KR920007431A true KR920007431A (en) 1992-04-28
KR0138100B1 KR0138100B1 (en) 1998-05-15

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KR1019900015424A KR0138100B1 (en) 1990-09-28 1990-09-28 Vertical resolution improving apparatus of television image signal

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KR0138100B1 (en) 1998-05-15

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