KR950002480A

KR950002480A - Video signal processing method of high definition television encoder

Info

Publication number: KR950002480A
Application number: KR1019930012099A
Authority: KR
Inventors: 심영석; 남우춘; 노기홍
Original assignee: 김영욱; 생산기술연구원
Priority date: 1993-06-30
Filing date: 1993-06-30
Publication date: 1995-01-04

Abstract

본 발명은 고선명 텔레비젼(HDTV)의 엔코더의 영상신호 처리방법에 관한 것으로써, 저역 여파기(30 내지 32), 서브 샘플링기(33 내 35), 움직임 추정기(37), 모드 결정기(38), DATV 엔코더(40) 및 MUX(36)를 포함한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal processing method of an encoder of high definition television (HDTV). An encoder 40 and a MUX 36.

전술한 바와같은 블럭들로 구성된 본 발명의 영상신호 처리방법은, 상기 저역 여파기(50)를 통과하지 않은 원래의 54MHz 휘도신호(10)와 상기 저역 여파기(32)를 통과한 신호를 비교하여 전체 4필드중 먼저 1,2,필드의 모드를 결정하고, 그다음 3,4필드의 모드를 결정하며, 마지막으로 전체 4필드의 모드를 결정하는 방식으로 가장적으로 오차값을 갖는 모드를 결정하여 영상신호에 부가하여 MAC 채널로 전송함으로써 보다 고화질을 구현한 것이다.The video signal processing method of the present invention composed of the blocks as described above compares the signal passing through the low pass filter 32 with the original 54 MHz luminance signal 10 that does not pass through the low pass filter 50. First of all, the mode of 1,2 and field is determined, then the mode of 3 and 4 fields is determined, and finally, the mode having the most error value is determined by determining the mode of all 4 fields. In addition to the signal is transmitted to the MAC channel to implement a higher quality.

Description

Video signal processing method of high definition television encoder

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

제2도(가)는 본 발명의 각 블럭에 대해 가질 수있는 모드를 도시한 테이블이며 (나)는 본 발명의 고선명 텔레비젼 엔코더의 영상신호 처리 방법을 예시하는 테이블.Fig. 2A is a table showing the modes that can be present for each block of the present invention, and (B) is a table illustrating a video signal processing method of the high definition television encoder of the present invention.

Claims

Low-pass filters 30 to 32 for inputting luminance signals among video signals, low-pass filters, sub-samplers 33 to 35 for subsampling signals output from the filters 30 to 32, and the low-pass filter ( 32, a motion estimator 37 for estimating motion for each block by inputting a low pass signal, and an original projection 10 and images 41 to 43 filtered for each mode to obtain the best mode. In comparison, the mode determiner 38 determines the best mode for each block for a predetermined time period, and transmits the information on the mode decision and the transmission bit of the motion vector to the channel, and transmits the subsamplers 33 to 33. The DATV encoder 40 which provides a control signal to select one of 35) and the signal output from the sub-samplers 3 to 35 by the control signal provided from the encoder 40 are each field. A video signal processing method of a high definition television encoder comprising: a MUX (36) for switching every block and line-shuffing to match the format of a channel. A first step of comparing the signals passing through the low pass filter 32 to determine the mode of the first and second fields first among the four fields; A second step of determining modes of third and fourth fields among the four fields after the first step; And a third step of determining modes of the entire first, second, third, and fourth fields after the first and second steps.

※ Note: The disclosure is based on the initial application.