KR950026257A - High Definition TV Channel Equalization Circuit with PIP Function - Google Patents

High Definition TV Channel Equalization Circuit with PIP Function Download PDF

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Publication number
KR950026257A
KR950026257A KR1019940003715A KR19940003715A KR950026257A KR 950026257 A KR950026257 A KR 950026257A KR 1019940003715 A KR1019940003715 A KR 1019940003715A KR 19940003715 A KR19940003715 A KR 19940003715A KR 950026257 A KR950026257 A KR 950026257A
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KR
South Korea
Prior art keywords
channel
equalization
candidate
signal
pip
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Application number
KR1019940003715A
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Korean (ko)
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KR970003144B1 (en
Inventor
최영배
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배순훈
대우전자 주식회사
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Priority to KR1019940003715A priority Critical patent/KR970003144B1/en
Publication of KR950026257A publication Critical patent/KR950026257A/en
Application granted granted Critical
Publication of KR970003144B1 publication Critical patent/KR970003144B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

본 발명은 채널특성에 의해 왜곡된 신호를 등호필터링 함으로써 복원신호를 얻어내는 등화부를 적어도 두 개이상 구비하여, 한 수상기로 두가지 이상의 화면을 보여주는 피아이피(PIP:Pictur-In- Picture)기능을 갖는 고화질 티브이에 있어서 채널변경시보다 빠르고 효율적인 채널등화를 수행하기 위한 채널등화회로에 관한 것이다. 이를 위하여 본 발명은 피아이피 기능을 이용하지 않고 한 채널만을 시청하고있을 때 시청채널의 등화를 수행하는 등화회로를 제외한 다른 등화회로에서 얻어진 채널변경시 선택가능한 후보채널의 등화필터계수를 저장하기 위한 저장부와 ; 사용자에 의해 선택가능하며, 채널변경신호를 발생하는 신호발생수단과 ; 후보채널의 채널등화를 제어하며, 상기 채널변경신호에 응답하여 상기 정부에 저장된 변경채널에 대응하는 후보채널의 필터례수가 상기 등화부로 전송되도록 제어하기 위한 후보채널 선택로직 제어부를 포함한다. 따라서, 피아이피 기능이 작동되고 있는 경우를 제외하고는 동작하고 있지 않는 등화회로를 이용하여 변경가능한 채널, 즉 후보채널을 미리 등화하여 그 필터계수를 별도로 지정된 저장부에 저장해두어, 채널이 전환되거나 피아이피 기능이 개시되어 다른 채널을 보여 주어야 할 경우 보다 더 빠른 등화를 이루어 성능의 향상을 이룰 수 있게 된다.The present invention includes at least two equalizers for obtaining a reconstruction signal by equality-filtering a signal distorted by a channel characteristic, and has a PiP (Pictur-In-Picture) function for showing two or more screens with one receiver. The present invention relates to a channel equalization circuit for performing channel equalization faster and more efficiently when changing channels in a high-definition television. To this end, the present invention provides a method for storing an equalization filter coefficient of a selectable candidate channel when changing a channel obtained from another equalization circuit except for an equalizing circuit which performs equalization of a viewing channel when the user is watching only one channel without using the PIP function. A storage unit; Signal generating means selectable by a user and generating a channel change signal; And a candidate channel selection logic controller for controlling channel equalization of a candidate channel and controlling the filter number of candidate channels corresponding to the change channel stored in the government to be transmitted to the equalizer in response to the channel change signal. Therefore, a channel that can be changed using an equalizing circuit that is not operating except when the PIP function is activated, that is, a candidate channel is equalized in advance, and the filter coefficient is stored in a separate storage unit, and the channel is switched or When the PIP function is started and other channels need to be shown, the equalization can be performed faster than that of the performance improvement.

Description

피아이피 기능을 갖는 고화질 티브이의 채널등화회로High Definition TV Channel Equalization Circuit with PIP Function

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

도면은 본 발명에 따른 피아이피 기능을 갖는 고화질 티브이의 채널등화회로.Figure is a channel equalization circuit of a high-definition TV having a PI function according to the present invention.

Claims (2)

채널특성에 의해 왜곡된 신호를 등화필터링함으로써 복원신호를 얻어내는 등화부를 적어도 두 개 이상 구비하여 한 수상기로 두가지 이상의 화면을 보여주는 피아이피(PIP:Pictur-In- Picture)기능을 갖는 고화질 티브이의 채널등화회로 있어서 피아이피 기능을 이용하지 않고 한 채널만을 시청하고 있을 때 시청 채널의 등화를 수행하는 등화회로를 제외한 다른 등화회로에서 얻어진 채널변경시 선택가능한 후보채널의 등화필터 계수를 저장하기 위한 저장부(300)와 ; 사용자에 의해 선택가능하며, 채널변경신호를 발생하는 신호발생수단과 ; 후보채널의 채널등화를 제어하며, 상기 채널변경신호에 응답하여 상기 저장부(300)에 저장된 변경채널에 대응하는 후보채널의 필터계수가 상기 등화부로 전송되도록 제어하기 위한 후보채널 선택로직 제어부(400)를 포함하는 것을 특징으로 하는 고화질 티브의 채널등화회로.High-quality TV channel with PIP (Pictur-In-Picture) function, which has at least two equalizers to obtain reconstruction signals by equalizing and filtering the signal distorted by the channel characteristics. Storage unit for storing equalization filter coefficients of candidate channels that can be selected when changing channels obtained from other equalization circuits except equalization circuits that perform equalization of the viewing channel when the equalization circuit is watching only one channel without using the PIP function. 300 and; Signal generating means selectable by a user and generating a channel change signal; A candidate channel selection logic controller 400 for controlling channel equalization of a candidate channel and controlling a filter coefficient of a candidate channel corresponding to the changed channel stored in the storage unit 300 to be transmitted to the equalizer in response to the channel change signal; High-definition TV channel lighting circuit comprising a). 제1항에 있어서, 후보채널은 사용자에 의해서 등록이 가능하거나, 후보채널 선택로직제어부(400)내에서 최소최근사용(LRU ; Least Recently Used) 알고리즘 등에 의하여 자동적으로 결정되어 보다 선택 가능성이 높은 채널들이 선정되는 고화질 티브이의 채널등화회로.The channel of claim 1, wherein the candidate channel is registered by a user or is automatically determined by a least recently used (LRU) algorithm in the candidate channel selection logic controller 400. High Definition TV Channel Equalization Circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940003715A 1994-02-28 1994-02-28 Channel equalization apparatus in hdtv having pip function KR970003144B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940003715A KR970003144B1 (en) 1994-02-28 1994-02-28 Channel equalization apparatus in hdtv having pip function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940003715A KR970003144B1 (en) 1994-02-28 1994-02-28 Channel equalization apparatus in hdtv having pip function

Publications (2)

Publication Number Publication Date
KR950026257A true KR950026257A (en) 1995-09-18
KR970003144B1 KR970003144B1 (en) 1997-03-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940003715A KR970003144B1 (en) 1994-02-28 1994-02-28 Channel equalization apparatus in hdtv having pip function

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KR970003144B1 (en) 1997-03-14

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