KR950007533A

KR950007533A - Adaptive High Definition TV Channel Equalization Circuit

Info

Publication number: KR950007533A
Application number: KR1019930017204A
Authority: KR
Inventors: 최영배
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1993-08-31
Filing date: 1993-08-31
Publication date: 1995-03-21
Also published as: KR960013225B1

Abstract

본 발명의 적응형 고화질 티브이의 채널등화회로는 블라인드 등화기와 직접결정 등화기를 이용하여 2레벨의 등화작업을 하는 채널 등화회로에서 채널등화작동을 보다 빠른 시간내에 수행하도록 하기 위하여 티브이 본체나 원격제어기(리모트콘트롤, 일명 리모콘)로부터 출력되는 채널전환신호를 이용하여 채널등화작업을 제어하기 위한 것이다. 이를 위하여 본 발명은 블라인드등화기에 의해 등화된 결과값에 의하여 수신된 신호와 원신호의 평균값간의 오차의 크기가 개안도를 열만큼 되는지를 판단한 값 또는 외부에서 인가되는 채널전환신호에 의하여 블라인드 등화기와 직접결정 등화기에서 출력되는 신호를 선택하는 제어신호를 출력하기 위한 선택제어수단과, 이 선택제어수단에서 출력되는 신호에 의하여 블라인드 등화기 및 직접결정 등화기에서 출력되는 신호를 등화필터로 선택적으로 출력하기 위한 선택수단을 포함하여 구성된다. 따라서 상술한 오차값의 계산과정을 거치지 않고 채널전환 신호에 의하여 바로 블라인드 등화작업을 수행하여 채널등화를 빠르게 수행할 수 있다.The adaptive high-definition TV channel equalization circuit of the present invention uses a TV main body or a remote controller to perform channel equalization operation in a faster time in a channel equalization circuit that performs two-level equalization by using a blind equalizer and a direct decision equalizer. Remote control, so-called remote control) to control the channel equalization using the channel switching signal output. To this end, the present invention is to determine whether the magnitude of the error between the received signal and the average value of the original signal by the equalization result by the blind equalizer is equal to ten eye openings or blind equalization by the channel switching signal applied from the outside. A selective control means for outputting a control signal for selecting a signal output from the direct and direct decision equalizers, and a signal output from the blind equalizer and the direct crystal equalizer by the signal output from the selection control means as an equalization filter. It comprises a selection means for outputting to. Accordingly, channel equalization can be performed quickly by performing blind equalization by the channel switching signal without going through the above-described calculation of the error value.

Description

Adaptive High Definition TV Channel Equalization Circuit

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

제1도는 종래의 적응형 고화질 티브이의 채널등화회로.1 is a channel adaptive circuit of a conventional adaptive high definition TV.

제2도는 본 발명에 따른 적응형 고화질 티브이의 채널등화회로.2 is a channel equalization circuit of an adaptive high definition TV according to the present invention.

Claims

1. An adaptive high quality TV channel equalization circuit for performing two levels of equalization on a received channel signal, comprising: an equalization filter (10) for equalization filtering on the received signal; A blind equalizer 20 which equalizes the magnitude of the error between the received signal and the average value of the received original signal until the open eye is opened; A direct crystal equalizer 30 which performs equalization following the blind equalizer 20 when the opening degree is opened; According to the result value equalized by the blind equalizer 20, it is determined directly by the blind equalizer 20 based on a value that determines whether the magnitude of the error is equal to the opening degree of the eye or by a channel switching signal applied from the outside. Selection control means (61) for outputting a control signal for selecting a signal output from the equalizer (30); Selection for selectively outputting the signals output from the blind equalizer 20 and the direct crystal equalizer 30 as equalization coefficient values of the equalization filter 10 by the signals output from the selection control means 61. Adaptive high definition TV channel equalization circuit, characterized in that consisting of means (70).

The equalization selection logic (60) according to claim 1, wherein the selection control means (61) outputs a value for determining whether the magnitude of the error is equal to ten opening eyes by a signal output from the equalization filter (10). And a logic element G1 for logical combination using the signal output from the equalization selection logic 60 and the channel switching signal as an input signal and outputting it as a selection control signal of the selection means 70. An adaptive high definition TV channel equalization circuit.

The adaptive high-definition TV of claim 2, wherein the logic element G1 is operated by prioritizing the channel switching signal among the channel switching signal and the signal output from the equalization selection logic 60. Equalization circuit.

3. The adaptive high-definition TV channel equalization circuit as claimed in claim 2, wherein the logic element (G1) comprises an element for performing a logical sum of the channel switching signal and the signal output from the equalization selection logic (60).

The method of claim 4, wherein the selection means (70) is a signal output from the blind equalizer (20) and the signal output from the direct crystal equalizer (30) by the output signal of the selection control means (61) An adaptive high-definition TV channel equalization circuit, characterized in that consisting of a multiplexer for selectively outputting.

3. The adaptive high-definition TV channel equalization circuit as claimed in claim 2, wherein the logic element (G1) comprises an element which logically multiplies the channel switching signal by the signal output from the equalization selection logic (60).

The method of claim 1, wherein the selection means (70) is a signal output from the blind equalizer (20) and the signal output from the direct crystal equalizer (30) by the output signal of the selection control means (61) Adaptive high-definition TV channel equalization circuit, characterized in that consisting of a multiplexer for selectively outputting.

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