KR930009444A - CIF Video Signal Converter - Google Patents

CIF Video Signal Converter Download PDF

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Publication number
KR930009444A
KR930009444A KR1019910017539A KR910017539A KR930009444A KR 930009444 A KR930009444 A KR 930009444A KR 1019910017539 A KR1019910017539 A KR 1019910017539A KR 910017539 A KR910017539 A KR 910017539A KR 930009444 A KR930009444 A KR 930009444A
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KR
South Korea
Prior art keywords
video signal
cif
signal converter
video
address
Prior art date
Application number
KR1019910017539A
Other languages
Korean (ko)
Inventor
홍민철
류정춘
Original Assignee
정장호
금성정보통신 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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Publication date
Application filed by 정장호, 금성정보통신 주식회사 filed Critical 정장호
Priority to KR1019910017539A priority Critical patent/KR930009444A/en
Publication of KR930009444A publication Critical patent/KR930009444A/en

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Abstract

본 발명은 CIF영상신호 변환기에 관한 것으로, 특히 표준 NTSC 영상신호를 국제전신전화 자문위원회(CCITT)에서 규정한 CIF(Common Intermediate Format)영상신호로 변환할 수 있는 CIF 영상신호 변환기에 관한 것이다.The present invention relates to a CIF video signal converter, and more particularly, to a CIF video signal converter capable of converting a standard NTSC video signal into a CIF (Common Intermediate Format) video signal defined by the International Telephony Advisory Committee (CCITT).

본 발명에 의한 CIF 영상신호 변환기는 입력된 NTSC 영상 데이터를 비데오 RAM에 순차적으로 어드레싱하여 저장한 후, 비데오 RAM에 저장된 NTSC 영상데이타를 5 : 3 의 비로 어드레싱하여 읽어 냄으로써 NTSC 영상신호를 CIF 영상신호로 변환할 수 있다.The CIF video signal converter according to the present invention sequentially stores the input NTSC video data in the video RAM and stores the NTSC video signal by reading the NTSC video data stored in the video RAM at a ratio of 5: 3 to read the CIF video signal. Can be converted to

Description

CIF 영상신호 변환기CIF Video Signal Converter

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

제5도는 본 발명에 의한 CIF 영상신호 변환기의 구성도.5 is a block diagram of a CIF video signal converter according to the present invention.

제6도는 본 발명에 의한 어드레스 발생순서를 나타낸 도.6 is a diagram showing an address generation sequence according to the present invention.

제7도는 본 발명에 의한 어드레스 제어부의 구성도.7 is a configuration diagram of an address control unit according to the present invention.

Claims (2)

CIF 영상신호 변환기에 있어서, 비데오 RAM에서 NTSC 영상데이타를 저장할 때 어드레싱하기 위한 어드레스 제어부(54)와, 짝수 어드레스 신호를 발생하는 짝수 어드레스 발생기(51)와, 홀수 어드레스 신호를 발생하는 홀수 어드레스 발생기(52)와, 상기 비데오 RAM에 저장된 NTSC영상데이타를 읽어낼 때 어드레싱하기 위해 상기 짝수 어드레스 발생기(51) 및 홀수어드레스 발생기(52)로부터의 어드레스 신호를 소정의 비율로 멀티플렉싱하여 출력하는 멀티플렉서(53)를 포함하는 것을 특징으로 하는 CIF 영상신호 변환기.In the CIF video signal converter, an address controller 54 for addressing NTSC video data in the video RAM, an even address generator 51 for generating an even address signal, and an odd address generator for generating an odd address signal ( 52) and a multiplexer 53 for multiplexing and outputting address signals from the even address generator 51 and the odd address generator 52 at a predetermined ratio for addressing when reading NTSC image data stored in the video RAM. CIF image signal converter comprising a. 제1항 있어서, 상기 어드레스 제어부(54)는 복수의 D플립플롭, 복수의 AND게이트, 복수의 NAND게이트, 복수의 인버터 및 멀티플렉서로 연결 구성된 것을 특징으로 하는 CIF 영상신호 변환기.The CIF video signal converter of claim 1, wherein the address controller (54) is connected to a plurality of D flip-flops, a plurality of AND gates, a plurality of NAND gates, a plurality of inverters, and a multiplexer. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910017539A 1991-10-07 1991-10-07 CIF Video Signal Converter KR930009444A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910017539A KR930009444A (en) 1991-10-07 1991-10-07 CIF Video Signal Converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910017539A KR930009444A (en) 1991-10-07 1991-10-07 CIF Video Signal Converter

Publications (1)

Publication Number Publication Date
KR930009444A true KR930009444A (en) 1993-05-22

Family

ID=67433778

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910017539A KR930009444A (en) 1991-10-07 1991-10-07 CIF Video Signal Converter

Country Status (1)

Country Link
KR (1) KR930009444A (en)

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