KR950013176A - Abnormal screen display prevention device when changing channel of digital TV - Google Patents

Abnormal screen display prevention device when changing channel of digital TV Download PDF

Info

Publication number
KR950013176A
KR950013176A KR1019930022618A KR930022618A KR950013176A KR 950013176 A KR950013176 A KR 950013176A KR 1019930022618 A KR1019930022618 A KR 1019930022618A KR 930022618 A KR930022618 A KR 930022618A KR 950013176 A KR950013176 A KR 950013176A
Authority
KR
South Korea
Prior art keywords
signal
frame
variable length
length decoding
screen display
Prior art date
Application number
KR1019930022618A
Other languages
Korean (ko)
Other versions
KR960013228B1 (en
Inventor
윤상호
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019930022618A priority Critical patent/KR960013228B1/en
Publication of KR950013176A publication Critical patent/KR950013176A/en
Application granted granted Critical
Publication of KR960013228B1 publication Critical patent/KR960013228B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명은 디지탈 텔레비젼에 있어서, 채널변경시에 비정상직인 화면이 디스플레이되는 것을 방지하기 위한 채널변경시 비정상 화면 디스플레이 방지장치에 관한 것으로, 인터페이스부(1), 버퍼(2), 가변길이 복호기(3), 제어부(4), 역양자화기(5), IDCT부(6), 프레임메모리 및 움직임보상부(7)로 구성되며, 제어부(4)로부터 출력되는 리셋트 신호와 액티브/인액티브(act/inact) 신호로 각 블럭을 제어하므로써 채널변경시에 비정상적인 화면이 디스플레이되는 것을 방지한다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for preventing abnormal screen display at the time of channel change in order to prevent the display of an abnormal screen at the time of channel change in a digital television. ), A control unit 4, an inverse quantizer 5, an IDCT unit 6, a frame memory and a motion compensation unit 7, and a reset signal and an active / inactive (act) output from the control unit 4 / inact) to control each block to prevent abnormal screen display when changing the channel.

Description

디지탈 텔레비전의 채널변경시 비정상 화면 디스플레이 방지장치Device to prevent abnormal screen display when changing channel of digital television

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

제1도는 본 발명에 의한 채널변경시 비정상 화면 디스플레이 방지장치의 구성도,1 is a block diagram of an apparatus for preventing abnormal screen display when changing a channel according to the present invention;

제2도는 제1도의 프레임 메모리 및 움직임보상부의 세부 구성도,2 is a detailed configuration diagram of the frame memory and the motion compensation unit of FIG.

제3도는 제1도의 각 부분의 신호파형도.3 is a signal waveform diagram of each part of FIG.

Claims (5)

데이타 정합 기능을 수행하는 인틴페이스수단(1)과; 상기 인터페이스수단(1)으로부터 출력되는 신호를 버퍼링하는 버퍼수단(2)과; 상기 버퍼수단(2)으로부터 출력되는 신호를 가변길이 복호화하는 가변길이 복호수단(3)과 ; 상기 가변길이 복호수단 (3)으로부터 출력되는 신호를 역양자화하는 역양자화수단 (5)과; 상기 역양자화수단(5)과으로부터 출력되는 신호를 역이산코사인변환(Inverse Discrete Cosine Transform ;IDCT)하는 IDCT수단(6)과 ; 상기 IDCT수단(6)으로부터 출력되는 신호를 움직임보상하는 프레임메모리 및 움직임보상수단(7)과; 상기 가변길이 복호수단(3)으로부터 출력되는 신호와 채널변경 신호를 입력하여 상기 인터페이스수단 (1), 버퍼수단(2), 가변길이복호수단(3), 역양자화수단(5), IDCT수단(6) 및 프레임메모리 및 움직임보상수단(7)을 제어하는 제어수단(4)을 포함하는 디지탈 TV의 채널변경시 비정상 화면 디스플레이 방지장치.Interfacing means (1) for performing a data matching function; Buffer means (2) for buffering signals output from said interface means (1); Variable length decoding means (3) for variable length decoding the signal output from the buffer means (2); Inverse quantization means (5) for inversely quantizing the signal output from said variable length decoding means (3); IDCT means (6) for inverse Discrete Cosine Transform (IDCT) of the signal output from the inverse quantization means (5); A frame memory and motion compensating means (7) for motion compensating the signal output from said IDCT means (6); The interface means (1), the buffer means (2), the variable length decoding means (3), the inverse quantization means (5), and the IDCT means by inputting the signal and the channel change signal outputted from the variable length decoding means (3). And 6) and control means (4) for controlling the frame memory and the motion compensating means (7). 제1항에 있어서, 상기 제어수단(4)은 가변길이 복호수단(3)으로부터 출력되는 프레임내(intra) 신호와 프레임 동기신호 및 채널변경신호를 입력하여 상기 인터페이스수단(1), 버퍼수단(2), 가변길이복호수단(3), 역양자화수단 (5) , IDCT수단 (6) 및 프레임메모리 및 움직임보상수단 (7)을 리셋트시키는 리셋트신호와 상기 프레임메모리 및 움직 임보상수단 (7)을 제어하는 액티브/인액티브 (act/inact) 신호를 출력하는 것을 특징으로 하는 디지탈 TV의 채널변경시 비정상 화면 디스플레이 방지장치.2. The control means (4) according to claim 1, wherein the control means (4) inputs an intra frame signal, a frame synchronizing signal, and a channel change signal output from the variable length decoding means (3), so that the interface means (1) and buffer means ( 2) a reset signal for resetting the variable length decoding means 3, the inverse quantization means 5, the IDCT means 6 and the frame memory and the motion compensation means 7, and the frame memory and the motion compensation means ( 7) Preventing abnormal screen display when changing the channel of the digital TV, characterized in that for outputting an active / inactive (act / inact) signal for controlling. 제1항에 있어서, 상기 프레임메모리 및 움직임보상수단(7)은 차분펄스부호 변조(Difference Pulse Code Modulation ; DPCM)하는 DPCM수단(61)과; 상기 DPCM수단(61)으로부터 출력되는 전송할 현재 처리된 입력 데이타를 저장하는 제1프레임저장수단(62)과; 상기 제어수단(4)의 제어에 따라 상기 제1프레임저장수단(62)으로부터 출력되는 이전프레임의 데이타를 저장하고 상기 DPCM수단 (61)으로 전송하는 제2프레임저장수단 (63)을 포함하는 디지탈 TV의 채널 변경시 비정상화면 디스플레이 방지장치.2. The apparatus according to claim 1, wherein said frame memory and motion compensation means (7) comprise: DPCM means (61) for differential pulse code modulation (DPCM); First frame storing means (62) for storing the currently processed input data to be transmitted output from said DPCM means (61); A digital frame comprising second frame storage means (63) for storing data of the previous frame output from the first frame storage means (62) and transmitting the data to the DPCM means (61) under the control of the control means (4). Device to prevent abnormal screen display when changing channel of TV. 제2항에 있어서, 상기 리셋트 신호는 상기 채널변경신호가 입력된 후 그 다음의 프레임 동기신호에 동기되어 프레임 동기신호의 한 사이클동안 발생되는 것을 특징으로 하는 디지탈 TV의 채널 변경시 비정상화면 디스플레이 방지장치.3. The abnormal screen display of changing a channel of a digital TV according to claim 2, wherein the reset signal is generated during one cycle of a frame synchronization signal in synchronization with a next frame synchronization signal after the channel change signal is input. Prevention device. 제2항에 있어서, 상기 액티브/인액티브 신호는 상기 채널변경신호가 입력된 후 그 다음의 프레임 동기신호에 동기되어 인액티브상태가 되고 프레임내 신호가 입력된 후. 그 다음의 프레임 동기신호에 동기하여 액티브 상태가 되는 것을 특징으로 하는 디지탈 TV의 채널변경시 비정상 화면 디스플레이 방지장치.3. The method of claim 2, wherein the active / inactive signal is in an inactive state in synchronization with a next frame synchronization signal after the channel change signal is input and after the in-frame signal is input. An abnormal screen display preventing device when changing a channel of a digital TV, characterized in that an active state is synchronized with a next frame synchronizing signal. ※ 참고사항 ; 최초출원 내용에 의하여 공개하는 것임.※ Note ; Disclosure based on original application.
KR1019930022618A 1993-10-28 1993-10-28 Abnormal display preventing apparatus at channel selection of digital television KR960013228B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930022618A KR960013228B1 (en) 1993-10-28 1993-10-28 Abnormal display preventing apparatus at channel selection of digital television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930022618A KR960013228B1 (en) 1993-10-28 1993-10-28 Abnormal display preventing apparatus at channel selection of digital television

Publications (2)

Publication Number Publication Date
KR950013176A true KR950013176A (en) 1995-05-17
KR960013228B1 KR960013228B1 (en) 1996-10-02

Family

ID=19366824

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930022618A KR960013228B1 (en) 1993-10-28 1993-10-28 Abnormal display preventing apparatus at channel selection of digital television

Country Status (1)

Country Link
KR (1) KR960013228B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100368738B1 (en) * 1996-12-12 2003-04-21 에스케이 주식회사 Bio-/photo-degradable agricultural mulch film composition, preparation thereof and formed product obtained from the same composition
KR100484721B1 (en) * 2002-02-27 2005-04-20 주식회사 엘지화학 Biodegradable masterbatch resin composition and method for preparing the same, and biodisintergrable film comprising the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100368738B1 (en) * 1996-12-12 2003-04-21 에스케이 주식회사 Bio-/photo-degradable agricultural mulch film composition, preparation thereof and formed product obtained from the same composition
KR100484721B1 (en) * 2002-02-27 2005-04-20 주식회사 엘지화학 Biodegradable masterbatch resin composition and method for preparing the same, and biodisintergrable film comprising the same

Also Published As

Publication number Publication date
KR960013228B1 (en) 1996-10-02

Similar Documents

Publication Publication Date Title
KR910019427A (en) Picture-in-Picture System for Television Receivers
KR920017486A (en) Communication method of compressed digital video signal using multiple processors and apparatus therefor
KR950700668A (en) LOWER RESOLUTION HDTV RECEIVERS
KR930022889A (en) Image coding / decoding device
KR20000057295A (en) Image element processor for a memory management system using recompression
KR20000028928A (en) Programmable filter for removing selected user data from an MPEG-2 bit-stream
KR970707686A (en) Method and device for decoding coded video signals
KR960028509A (en) Magnetic Screen Processing Circuit and Method of Video Phone
KR930003574A (en) Digital video signal decoding device
KR930019025A (en) Video signal transmission method
US6188727B1 (en) Simplicity HDTV video decoder and its decoding method
US5510846A (en) Process for synchronizing the scanning circuit of an image display device
KR960020542A (en) Method and system for decoding video signal
KR100251549B1 (en) Digital image decoder
KR950013176A (en) Abnormal screen display prevention device when changing channel of digital TV
KR960010199B1 (en) Digital signal processor chip control apparatus
KR950010615A (en) Screen generator for wide TV receiver
JPH04207780A (en) Periodic refresh circuit of moving image encoding device
KR960028543A (en) Video Coding Device Using Wavelet Transform
KR100242832B1 (en) Apparatus for generating quantization step value
KR100205214B1 (en) Decoding apparatus and method for compressed video data
KR970057990A (en) Quantization Step Control Device Using Motion Estimation
KR940023171A (en) Video signal transmission processing device capable of bidirectional transmission control
JPH03136587A (en) Periodic refresh system for moving picture coder
KR0144136B1 (en) Digital tv signal converting circuit video codec

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19990930

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee