KR970058051A - Converter for converting H.261 video codec having common intermediate format into ITU-R 601 format - Google Patents

Converter for converting H.261 video codec having common intermediate format into ITU-R 601 format Download PDF

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Publication number
KR970058051A
KR970058051A KR1019950053194A KR19950053194A KR970058051A KR 970058051 A KR970058051 A KR 970058051A KR 1019950053194 A KR1019950053194 A KR 1019950053194A KR 19950053194 A KR19950053194 A KR 19950053194A KR 970058051 A KR970058051 A KR 970058051A
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KR
South Korea
Prior art keywords
write
signal
reset
read
format
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KR1019950053194A
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Korean (ko)
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KR0175459B1 (en
Inventor
황대환
최진상
김선자
박종훈
이의택
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양승택
한국전자통신연구원
이준
한국전기통신공사
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Priority to KR1019950053194A priority Critical patent/KR0175459B1/en
Publication of KR970058051A publication Critical patent/KR970058051A/en
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Publication of KR0175459B1 publication Critical patent/KR0175459B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/20—Conversion of the manner in which the individual colour picture signal components are combined, e.g. conversion of colour television standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation

Abstract

본 발명은 공통 중간 포맷(Common Intermediate Format: 이하, 'CIF'라 함)의 형태를 갖는 H.261 영상 코덱을 ITU-R 601 형태로 변환하는 변환 장치에 관한 것으로서, 쓰기 리셋 신호에 의해 쓰기 과정이 리셋되고, H.261 코덱으로부터 휘도 성분의 데이터를 쓰기 신호에 의해 쓰기 클럭에 동기시켜 입력받아 저장하여 읽기 리셋 신호에 의해 읽기 과정이 리셋 되고, 읽기 신호에 의해 읽기 클럭에 동기시켜 출력하는 제1, 제2프레임 메모리 수단(12, 13); 상기 H.261 코덱으로부터 색도 성분의 데이터를 입력받아 외부의 선택 신호에 의해 인에이블시켜 다중화하여 출력하는 제1, 제2다중화 수단 (10, 11); 및 상기 제1, 제2다중화 수단(10, 11)의 출력을 쓰기 리셋 신호에 의해 쓰기 과정이 리셋되고, 쓰기 신호에 의해 쓰기 클럭에 동기시켜 입력받아 저장하여 읽기 리셋 신호에 의해 읽기 과정이 리셋되고, 읽기 신호에 의해 읽기 클럭에 동기시켜 출력하는 제3, 제4프레임 메모리 수단(14, 15)을 구비하여 비격행 주사방식의 CIF 영상포맷을 갖는 장치의 신호를 TV 화면에 출력하기 위해서는 그 중간 단계인 ITU-R 601 디지틀 공통 포맷으로의 변환하여 H.261 영상코덱을 사용한 영상회의 단말의 영상 출력 변환 장치로 사용될 수 있는 효과가 있다.The present invention relates to a conversion apparatus for converting an H.261 video codec having a form of a common intermediate format (hereinafter, referred to as 'CIF') into an ITU-R 601 form. Is reset, the data of the luminance component is inputted from the H.261 codec in synchronization with the write clock by the write signal, stored therein, and the read process is reset by the read reset signal. First, second frame memory means (12, 13); First and second multiplexing means (10, 11) for receiving data of chromaticity components from the H.261 codec and enabling and multiplexing and outputting the data by means of an external selection signal; And a write process of the output of the first and second multiplexing means 10 and 11 is reset by a write reset signal. The write process of the first and second multiplexing means 10 and 11 is input and stored in synchronization with the write clock. And third and fourth frame memory means 14 and 15 for outputting in synchronism with the read clock by the read signal, and to output a signal of a device having a non-parallel scanning CIF image format to a TV screen. There is an effect that can be used as a video output conversion apparatus of a videoconferencing terminal using an H.261 video codec by converting to an intermediate ITU-R 601 digital common format.

Description

공통 중간 포맷의 형태를 갖는 H.261 영상 코덱을 ITU-R 601 형태로 변환하는 변환 장치Converter for converting H.261 video codec having common intermediate format into ITU-R 601 format

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

제1도는 본 발명의 일실시예에 따른 변환 장치의 구성도.1 is a block diagram of a converter according to an embodiment of the present invention.

제2도는 본 발명의 일실시예에 따른 타이밍도.2 is a timing diagram according to an embodiment of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 제1다중화기 11 : 제2다중화기10: first multiplexer 11: second multiplexer

12 : 제1프레임 메모리 13 : 제2프레임 메모리12: first frame memory 13: second frame memory

14 : 제3프레임 메모리 15 : 제4프레임 메모리14: third frame memory 15: fourth frame memory

Claims (1)

쓰기 리셋 신호에 의해 쓰기 과정이 리셋되고, H.261 코덱으로 부터 휘도 성분의 데이타를 쓰기 신호에 의해 쓰기 클럭에 동기시켜 입력받아 저장하여 읽기 리셋 신호에 의해 읽기 과정이 리셋 되고, 읽기 신호에 의해 읽기 클럭에 동기시켜 출력하는 제1, 제2프레임 메모리 수단(12, 13); 상기 H.261 코덱으로부터 색도 성분의 데이터를 입력받아 외부의 선택 신호에 의해 인에이블시켜 다중화하여 출력하는 제1, 제2 다중화 수단(10, 11); 및 상기 제1, 제2 다중화 수단(10, 11)의 출력을 쓰기 리셋 신호에 의해 쓰기 과정이 리셋되고, 쓰기 신호에 의해 쓰기 클럭에 동기시켜 입력받아 저장하여 읽기 리셋 신호에 의해 읽기 과정이 리셋 되고, 읽기 신호에 의해 읽기 클럭에 동기시켜 출력하는 제3, 제4프레임 메모리 수단(14, 15)을 구비한 것을 특징으로 하는 공통 중간 포맷의 형태를 갖는 H.261 영상 코덱을 ITU-R 601 형태로 변환하는 변환 장치.The write process is reset by the write reset signal, the data of the luminance component is inputted and stored in synchronization with the write clock by the write signal from the H.261 codec, and the read process is reset by the read reset signal. First and second frame memory means (12, 13) for outputting in synchronization with a read clock; First and second multiplexing means (10, 11) for receiving data of chromaticity components from the H.261 codec and enabling and multiplexing and outputting the data by means of an external selection signal; And a write process of the output of the first and second multiplexing means 10 and 11 is reset by a write reset signal. The write process of the first and second multiplexing means 10 and 11 is input and stored in synchronization with the write clock. And a third and fourth frame memory means (14, 15) for outputting in synchronization with a read clock by a read signal. ITU-R601 is a H.261 video codec having a form of a common intermediate format. Conversion device to convert to form. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950053194A 1995-12-21 1995-12-21 Codec conversion device from h.261 to itu-r601 KR0175459B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950053194A KR0175459B1 (en) 1995-12-21 1995-12-21 Codec conversion device from h.261 to itu-r601

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950053194A KR0175459B1 (en) 1995-12-21 1995-12-21 Codec conversion device from h.261 to itu-r601

Publications (2)

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KR970058051A true KR970058051A (en) 1997-07-31
KR0175459B1 KR0175459B1 (en) 1999-03-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100380823B1 (en) * 2001-01-18 2003-04-18 (주)씨앤에스 테크놀로지 Method for converting to CIF Image to NTSC Image

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100380823B1 (en) * 2001-01-18 2003-04-18 (주)씨앤에스 테크놀로지 Method for converting to CIF Image to NTSC Image

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