KR960006584A - Method and Circuit for Automatically Correcting the Vertical Size of TV Receiver - Google Patents

Method and Circuit for Automatically Correcting the Vertical Size of TV Receiver Download PDF

Info

Publication number
KR960006584A
KR960006584A KR1019940016164A KR19940016164A KR960006584A KR 960006584 A KR960006584 A KR 960006584A KR 1019940016164 A KR1019940016164 A KR 1019940016164A KR 19940016164 A KR19940016164 A KR 19940016164A KR 960006584 A KR960006584 A KR 960006584A
Authority
KR
South Korea
Prior art keywords
signal
screen
vertical
main
video
Prior art date
Application number
KR1019940016164A
Other languages
Korean (ko)
Other versions
KR0133458B1 (en
Inventor
김정훈
Original Assignee
이헌조
엘지전자 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 이헌조, 엘지전자 주식회사 filed Critical 이헌조
Priority to KR1019940016164A priority Critical patent/KR0133458B1/en
Publication of KR960006584A publication Critical patent/KR960006584A/en
Application granted granted Critical
Publication of KR0133458B1 publication Critical patent/KR0133458B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/223—Controlling dimensions
    • 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
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/67—Circuits for processing colour signals for matrixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H04N9/78—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

본 발명은 텔레비젼수상기에서 화면의 수직크기릍 조정하는 기술에 관한 것으로, 일반적인 텔레비젼수상기에 있어서는 화면의 상,하부분의 일부가 블록으로 저리된 와이드소오스의 입력에 대응하기 위하여 한개나 두개의 수직신장모드밖에 마련되어 있지 않아 그 블록부분을 정확하게 제거할 수 없는 결함이 있었는 바, 본 발명관 이를 해결하기 위하여 상,하측 블랙라인수릍 근거로 상,하측 블랙화면의 비율을 계산하여 소정 필드까지 이상이 없으면 그 상,하측 블럭화면의 비율을 근거로하여 수평, 수직방항으로의 편향을 조정하는 방법으로 화면의 크기를 보정하도록 하였다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for adjusting the vertical size of a screen in a television receiver. In a typical television receiver, one or two vertical extensions are used to cope with a wide source input in which part of the upper and lower portions of the screen is stored in blocks. There was a defect that the block part could not be removed correctly because only the mode was provided. To solve this problem, the ratio of the upper and lower black screens was calculated based on the upper and lower black line numbers, Based on the ratio of the upper and lower block screens, the screen size is corrected by adjusting the deflection in the horizontal and vertical directions.

Description

텔레비젼수상기의 화면수직크기 자동보정 방법 및 회로Method and Circuit for Automatically Correcting the Vertical Size of TV Receiver

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 소오스의 종류에 따른 화면 그 화면의 비율표.2 is a ratio table of screens according to the type of source.

제3도는 본 발명 텔레비젼수상기의 화면수직크기 자동보정 블록도.3 is a block diagram of automatic screen size adjustment of a television receiver according to the present invention.

제4도는 제3도에 블랭킹조정부의 상세 블록도.4 is a detailed block diagram of the blanking adjustment unit in FIG.

Claims (2)

주화면용 영상신호에서 분리된 동기신호릍 근거로 입력신호의 유,무를 확인한 후 수직동기신호가 입력되는 시점을 한 화면의 시작시점으로 인지하여 각종 카운터를 초기화시키는 제1과정과, 입력되는 수평동기신호를 근거로하여 화면 상측부의 블랙라인수를 검출하는 제2과정과, 입력되는 수평동기신호를 근거로하여 하면 하측부의 블랙라인수를 검출하는 제3과정과, 상기 제2,3과정에서 검출된 상,하측 블랙라인수를 근거로 상,하측 블력화면의 비율을 계산하여 소정 필드까지 이상이 없으면 그 상,하측 블랙화면의 비율을 근거로하여 수평, 수직항향으로의 편향을 조정하는 제4과정으로 이루어지는 것을 특징으로 하는 텔레비젼수상기의 화면수직크기 자동보정 방법.A first process of initializing various counters by recognizing the timing of inputting a vertical synchronization signal as a starting point of a screen after checking the presence or absence of an input signal on the basis of the synchronization signal separated from the main image video signal; A second step of detecting the number of black lines in the upper part of the screen based on the synchronization signal; a third step of detecting the number of black lines in the lower part based on the horizontal synchronization signal input; and in the second and third processes The ratio of the upper and lower black screens is calculated based on the detected number of upper and lower black lines, and if there is no abnormality up to a predetermined field, the deflection to the horizontal and vertical directions is adjusted based on the ratio of the upper and lower black screens. Automatic screen vertical size correction method for a television receiver comprising a fourth step. 주화면용 영상처리부(12M2) 및 부화면용 영상처리부(12S)의 출력신호를 공급받아 주화면용 휘도신호와 색신호, 부화면용 휘도신호와 색신호를 절환하는 영상/음성절환부(13)와, 상기 영상/음성절환부(13)의 출력신호를 공급받아 주,부화면용 휘도신호와 주,부화면용 색신호로 분리출력하는 피아이피부(14)와, 상기 피아이피부(14)의 출력신호를 공급받아 원래의 색신호(R,G,B)를 복원해내는 색복조 매트릭스(15A)와, 주화면의 입력신호를 감지하여 동기신호를 분리해내는 동기분리부(16)와, 주화면용 영상처리부(12M2)의 출력신호를 저역필터링하는 저역필터(17) 및 그 저역필터링된 신호를 기준신호와 비교하여 그에따른 영상신호의 유무 판정신호를 출력하는 비교기(18)와, 상기 동기분리부(16)와 비교기(18)를 통해 동기신호와 영상신호를 검출하여 영상신호가 없는 부분의 라인수를 카운트한 후 그에 적당한 수평/수직보정데이타를 산출하는 마이크로컴퓨터(19)와, 수직화면 확장시 씨피티(CPT)를 보호하기 위하여 상기 마이크로컴퓨터(19)에서 출력되는 수평/수직보정데이타를 근거로 오버스캔되는 부분을 제로빔으로 만드는 블랭킹조정부(20)로 구성한 것을 특징으로 하는 텔레비젼수상기의 화면수직크기 자동보정회로.The video / audio switching unit 13 which receives the output signals of the main screen image processing unit 12M 2 and the sub screen image processing unit 12S to switch the luminance signal and color signal for the main screen, and the luminance signal and color signal for the sub-screen. And an eye skin 14 which receives the output signal of the video / audio switching unit 13 and outputs the luminance signal for the main and sub picture and the color signal for the main and sub picture separately, and the output of the eye skin 14. A color demodulation matrix 15A for receiving the signal and restoring the original color signals R, G, and B, a synchronization separator 16 for detecting an input signal of the main screen, and separating the synchronization signal, and a main screen The low pass filter 17 for low-pass filtering the output signal of the image processing unit 12M 2 and the comparator 18 for comparing the low-pass filtered signal with a reference signal and outputting a determination signal for the presence or absence of a video signal according thereto; The separation unit 16 and the comparator 18 detect the synchronization signal and the video signal so that the video signal is Is a microcomputer 19 that counts the number of lines of a portion and then calculates appropriate horizontal / vertical correction data, and horizontal / outputs output from the microcomputer 19 to protect the CPT during vertical screen expansion. A screen vertical size automatic correction circuit for a television receiver, characterized in that it comprises a blanking adjustment unit (20) which makes a part of the overscan based on the vertical correction data into a zero beam. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940016164A 1994-07-06 1994-07-06 Method & circuit for automatic revision verticality size KR0133458B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940016164A KR0133458B1 (en) 1994-07-06 1994-07-06 Method & circuit for automatic revision verticality size

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940016164A KR0133458B1 (en) 1994-07-06 1994-07-06 Method & circuit for automatic revision verticality size

Publications (2)

Publication Number Publication Date
KR960006584A true KR960006584A (en) 1996-02-23
KR0133458B1 KR0133458B1 (en) 1998-04-22

Family

ID=19387378

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940016164A KR0133458B1 (en) 1994-07-06 1994-07-06 Method & circuit for automatic revision verticality size

Country Status (1)

Country Link
KR (1) KR0133458B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100781264B1 (en) * 2005-08-05 2007-12-03 엘지전자 주식회사 Display device and method for displaying video thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101994352B1 (en) 2017-08-23 2019-09-25 한국생산기술연구원 Control method of power take-off connected to agricultural vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100781264B1 (en) * 2005-08-05 2007-12-03 엘지전자 주식회사 Display device and method for displaying video thereof

Also Published As

Publication number Publication date
KR0133458B1 (en) 1998-04-22

Similar Documents

Publication Publication Date Title
US6208385B1 (en) Letterbox image detection apparatus
JP3664251B2 (en) Video output device
CN101193213A (en) Caption detection device, caption detection method, and pull-down signal detection apparatus
JPH1198422A (en) Video signal discrimination circuit
KR960006584A (en) Method and Circuit for Automatically Correcting the Vertical Size of TV Receiver
JP2910883B2 (en) Video signal processing device
JP3299838B2 (en) Wide aspect television display
JP3144257B2 (en) Screen size adjustment device
JPH0758973A (en) Aspect ratio discrimination device and video display device
JP3144226B2 (en) Screen size adjustment device and aspect detection method
JP3241539B2 (en) Video signal processing circuit
KR100395698B1 (en) Television receiver
JPH0918802A (en) Video signal processor
JPH07303242A (en) Television receiver
JP2002077768A (en) Image signal processor
JP3925381B2 (en) Video signal processing circuit
KR20010108964A (en) Movement detection method for portion image
KR200155134Y1 (en) Automatic control apparatus using wide screen signal
KR0178901B1 (en) Auto-control circuit of vertical size of wide tv receiver
JPH0965173A (en) Television receiver
JPH07288750A (en) Superimposed character processing circuit
JPH066710A (en) Television image receiver
KR0162305B1 (en) Noise bar removing circuit
JPH06197244A (en) Image noise correcting method
KR970031823A (en) Contour Correction Device of Image Signal

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20100929

Year of fee payment: 14

LAPS Lapse due to unpaid annual fee