KR970068580A

KR970068580A - Digital image format converter

Info

Publication number: KR970068580A
Application number: KR1019960009278A
Authority: KR
Inventors: 김경섭
Original assignee: 구자홍; 엘지전자 주식회사
Priority date: 1996-03-29
Filing date: 1996-03-29
Publication date: 1997-10-13

Abstract

본 발명은 디지탈 포맷의 NTSC 영상을 HDTV 또는 SDTV 모니터에 디스플레이 하기 위해 포맷을 변환시키는 디지탈 영상 포맷 변환 장치에 관한 것으로, 디지탈 포맷의 NTSC 영상을 액티브 영역이 720라인인 순차 주사식 영상 포맷으로 변환하거나, 액티브 영역이 540 라인인 비월 주사식 영상 포맷으로 변환하여 HDTV/SDTV 수상기로 시청할 수 없는 NTSC 방송을 HDTV/SDTV 수상기로 수신할 수 있도록 한다.The present invention relates to a digital image format conversion apparatus for converting a format for displaying an NTSC image in a digital format on an HDTV or SDTV monitor and converts the digital format NTSC image into a progressive scan image format having an active area of 720 lines , And the active area is converted into an interlaced video format of 540 lines, so that the NTSC broadcast which can not be viewed by the HDTV / SDTV receiver can be received by the HDTV / SDTV receiver.

Description

Digital image format converter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명에 의한 디지탈 영상 포맷 변환장치를 나타낸 전체 블록도, 제2도는 제1도의 인터레이서를 나타낸 상세 블록도, 제3도는 제2도의 수직필터의 특성도.FIG. 1 is an overall block diagram of an apparatus for converting a digital image format according to the present invention, FIG. 2 is a detailed block diagram showing an interlacer of FIG. 1, and FIG. 3 is a characteristic diagram of a vertical filter of FIG.

Claims

A progressive scan type NTSC image having an active area of 720 lines x 1280 pixels and 60 Hz as a source and having an active area of 720 lines x 1280 pixels and a frequency of 30 Hz and 24 Hz is interpolated and decimated to form a first Video formatting means; The second region in which the NTSC image having the active area of 540 lines x 1920 pixels and the frame rate of 60 Hz is used as the source and the active area is 1080 lines x 1920 pixels and the 30 Hz and 24 Hz progressive scan type NTSC images are interpolated and decimated, Video formatting means; A progressive scan type NTSC image having an active area of 480 lines x 704 pixels and a frequency of 60 Hz is used as a source and an interlaced scanning type NTSC image having an active area of 240 lines x 704 pixels and 60 Hz and 480 lines x 704 pixels of 30 Hz and 24 Hz A third image formatting means for formatting the NTSC image of the progressive scan type by interpolation and decimation; A progressive scan type NTSC image having an active area of 480 lines x 640 pixels and a frequency of 60 Hz and having an active area of 240 lines x 640 pixels and 60 Hz and an interlaced scan type NTSC image of 480 lines x 640 pixels, And fourth image formatting means for formatting the NTSC image of the progressive scan type by interpolation and decimation.

The digital image format conversion apparatus according to claim 1, wherein the digital image format conversion apparatus further comprises a plurality of switching means for switching and outputting desired digital data out of digital images formatted through the first to fourth image format means. Format conversion device.

The digital image format conversion apparatus of claim 2, further comprising: a D / A converter for converting output data of the switching means into display data; and a filter for discarding only high frequency components of output data of the D / A converter And converting the digital image data into digital image data.

A progressive scan type NTSC image having an active area of 720 lines x 1280 pixels and 60 Hz as a source and interpolating and decimating a progressive scan type NTSC image having an active area of 720 lines x 1280 pixels and 30 Hz and 24 Hz, First image format means for formatting in a scanning manner; Interlace and decimation of a progressive scan type NTSC image having an active area of 1080 lines x 1920 pixels and an active area of 3040 Hz and 24 Hz with an active area of 540 lines x 1920 pixels and an interlace scanning type NTSC image of 60 Hz Second image format means for formatting in a scanning manner; An NTSC image of 480 lines.times.704 pixels and 60 Hz and a progressive scan type NTSC image as a source is used as an interlace scanning type NTSC image having an active area of 240 lines.times.704 pixels and 60 Hz, And 24 Hz by interpolating and decimating an NTSC image of a progressive scan type to form an interlaced image; An NTSC image of 480 lines x 640 pixels and an active area of 6080 Hz, and an NTSC image of 480 lines x 640 pixels having an active area of 240 lines x 640 pixels and 60 Hz with an active area of 60 Hz, And a fourth image format unit for interpolating and decimating the progressive scan type NTSC image of 24 Hz to form an interlaced scan format.

The digital image format conversion apparatus according to claim 4, wherein the digital image format conversion apparatus further comprises a plurality of switching means for switching and outputting desired digital data out of digital images formatted through the first to fourth image format means. Format conversion device.

The digital image format conversion apparatus according to claim 4, wherein the digital image format conversion apparatus further comprises a D / A converter for converting the switching output data into display data and a filter for discarding only high frequency components of output data of the D / A converter A digital image format conversion device.

The apparatus of claim 4, wherein the first to fourth image format units include an interlacer for interlacing.

※ Note: It is disclosed by the contents of the first application.