KR950010511A

KR950010511A - TV's Ghost Removal

Info

Publication number: KR950010511A
Application number: KR1019930017501A
Authority: KR
Inventors: 박형모
Original assignee: 이헌조; 주식회사 금성사
Priority date: 1993-09-02
Filing date: 1993-09-02
Publication date: 1995-04-28
Also published as: KR100274378B1

Abstract

본 발명은 티브이에서 고스트를 제거하는 기술에 관한 것으로, 종래의 고스트제거 방법에 있어서, 첫번째 필드를 판별하고, 그 첫번째 필드로 부터 여덟번째 필드를 필드메모리에 저장시킨 수에만 평균화 알고리즘을 수행하고 8의 배수 필드만을 사용하여 평균화 알고리즘을 수행시키는 분제점을 해결하기 위하여 첫번째 입력되는 필드의 극성에 무관하게 평균화 알고리즘을 수행하고, 4의 배수 필드만으로 평균화 알고리즘을 수행시켜 고스트 제거 속도를 향상시킬 수 있게 한것이다.The present invention relates to a technique for eliminating ghosts in a TV. In the conventional ghost elimination method, a first field is determined, and an averaging algorithm is performed only for the number of eighth fields stored in the field memory from the first field. In order to solve the problem of performing the averaging algorithm using only the multiple fields of, the averaging algorithm is performed irrespective of the polarity of the first input field. It is.

Description

TV's Ghost Removal

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

제1도는 일반적인 티브이의 고스트제거 블록도,1 is a block diagram of the ghost removal of a typical TV,

제2도는 필드순서와 색 위상 및 GCR극성표,2 shows the field order, color phase, GCR polarity table,

제3도는 본 발명의 고스트제거 블록도,3 is a ghost removal block diagram of the present invention,

제4도는 본 발명의 시작 GCR라인에 따른 평균화 연산 결과표.4 is an averaging calculation result table according to the starting GCR line of the present invention.

Claims

The first process of storing the GCR data of one field stored in the first-in, first-out machine 105 in the averaging memory 108A regardless of the start field or the odd field or the first field, and the GCR signal of the second field. The second process of storing the data in the first-in-first-out unit 105 in the first-in first-out unit 105, and storing it in the averaging memory 108A, and when the GCR signal of the third field is stored in the first-in first-out unit 105, A third process of subtracting the data of the first-in-first-out 105 from the data stored in the averaging memory 108A and storing the result in the averaging memory 108A, and storing the GCR signal of the fourth field in the first-in-first-out 105 When the data of the first-in-first-out 105 is added to the data of the averaging memory 108A, the resultant is stored in the averaging memory 108A, averaged, and correlated with the ghost elimination reference signal stored in the program memory 107. Can algorithm In the fourth process of checking the input GCR polarity and the negative GCR as the result of the check in the fourth process, the polarity is switched and stored in the averaging memory 108A as the bipolar GCR, and the channel characteristics of the transmission channel are transmitted to the GCR. Obtaining a ghost removing filter 109 by inputting the filter coefficients to remove the TV ghost, TV ghost removal method comprising the.

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