ES2113397T3 - Dispositivo de limitacion de la corriente del haz para un sistema de television con previsiones de imagen dentro de imagen. - Google Patents

Dispositivo de limitacion de la corriente del haz para un sistema de television con previsiones de imagen dentro de imagen.

Info

Publication number
ES2113397T3
ES2113397T3 ES92120521T ES92120521T ES2113397T3 ES 2113397 T3 ES2113397 T3 ES 2113397T3 ES 92120521 T ES92120521 T ES 92120521T ES 92120521 T ES92120521 T ES 92120521T ES 2113397 T3 ES2113397 T3 ES 2113397T3
Authority
ES
Spain
Prior art keywords
bcl
contrast
section
control signal
image
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES92120521T
Other languages
English (en)
Inventor
William Adamson Lagoni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technicolor USA Inc
Original Assignee
Thomson Consumer Electronics Inc
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 Thomson Consumer Electronics Inc filed Critical Thomson Consumer Electronics Inc
Application granted granted Critical
Publication of ES2113397T3 publication Critical patent/ES2113397T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04N5/57—Control of contrast or brightness
    • H04N5/59—Control of contrast or brightness in dependence upon beam current of cathode ray tube
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
    • H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/485—End-user interface for client configuration
    • H04N21/4854—End-user interface for client configuration for modifying image parameters, e.g. image brightness, contrast
    • 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
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/52—Automatic gain control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Human Computer Interaction (AREA)
  • Television Receiver Circuits (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

EN UN SISTEMA DE TELEVISION EN COLOR CON POSIBILIDAD DE IMAGEN EN LA IMAGEN (PIP), HAY UN APARATO PARA MODIFICAR AUTOMATICAMENTE EL FUNCIONAMIENTO DE UNA SECCION LIMITADORA DE LA INTENSIDAD DEL HAZ (BCL) (41) MIENTRAS SE VISUALIZA LA IMAGEN PEQUEÑA PARA EVITAR QUE LA VISIBILIDAD DE LA IMAGEN PEQUEÑA SE VEA AFECTADA DE MANERA ADVERSA. EN UN ASPECTO DE LA INVENCION, SE DESACOPLA (55) UNA SEÑAL DE CONTROL BCL DE CONTRASTE (43) DE LA SECCION DE CONTRASTE Y UNA SEÑAL DE CONTROL SUSTITUTIVA (61), QUE AL MENOS SE APROXIMA A LA SEÑAL DE CONTROL DE CONTRASTE QUE RESPONDE AL USUARIO (7,31), SE SUSTITUYE (53) POR ESTA EN RESPUESTA A UNA SEÑAL DE CONMUTACION (FS) QUE HACE QUE LA IMAGEN PEQUEÑA QUEDE INTRODUCIDA DENTRO DE LA IMAGEN GRANDE. NO OBSTANTE, LA SECCION BCL SIGUE RESPONDIENDO A LA INTENSIDAD DEL HAZ DURANTE EL INTERVALO DE TIEMPO EN QUE LA IMAGEN PEQUEÑA SE VISUALIZA DE MODO QUE LA SEÑAL DE CONTROL DE CONTRASTE BCL PUEDE REPRESENTAR DE MANERA PRECISA EL CONTENIDO DE TODA LA IMAGEN. ADEMAS, ELFUNCIONAMIENTO DE UNA SECCION DE REDUCCION DEL CONTRASTE AUTOMATICA (47-50) QUE RESPONDE A UNA SEÑAL DE VIDEO REPRESENTATIVA DE LA CRESTA DEL BLANCO SE DESACTIVA TAMBIEN DURANTE EL INTERVALO DE TIEMPO EN QUE SE VISUALIZA LA IMAGEN PEQUEÑA. EN UN ASPECTO ALTERNATIVO DE LA INVENCION, SOLO SE DESACTIVA EL FUNCIONAMIENTO DE LA SECCION BCL DE CONTRASTE , PERO SE MANTIENE EL FUNCIONAMIENTO DEL CONTROL DE CONTRASTE AUTOMATICO. SI SE DESEA SE PUEDE DESACOPLAR TAMBIEN UNA SEÑAL DE CONTROL BCL DE BRILLO DE LA SECCION DE BRILLO.
ES92120521T 1991-12-11 1992-12-02 Dispositivo de limitacion de la corriente del haz para un sistema de television con previsiones de imagen dentro de imagen. Expired - Lifetime ES2113397T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/805,486 US5204748A (en) 1991-12-11 1991-12-11 Beam current limiting arrangement for a television system with picture-in-picture provisions

Publications (1)

Publication Number Publication Date
ES2113397T3 true ES2113397T3 (es) 1998-05-01

Family

ID=25191690

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92120521T Expired - Lifetime ES2113397T3 (es) 1991-12-11 1992-12-02 Dispositivo de limitacion de la corriente del haz para un sistema de television con previsiones de imagen dentro de imagen.

Country Status (11)

Country Link
US (1) US5204748A (es)
EP (1) EP0546431B1 (es)
JP (1) JP3312256B2 (es)
KR (1) KR960013304B1 (es)
CN (1) CN1036234C (es)
CA (1) CA2083312C (es)
DE (1) DE69224598T2 (es)
ES (1) ES2113397T3 (es)
HK (1) HK1005785A1 (es)
MY (1) MY108323A (es)
TW (1) TW199954B (es)

Families Citing this family (26)

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Publication number Priority date Publication date Assignee Title
US5349390A (en) * 1992-09-22 1994-09-20 U.S. Philips Corporation Picture signal processor for performing both large area and small area contrast reduction, and picture display apparatus incorporating such a picture signal processor
KR0124387B1 (ko) * 1993-12-07 1997-12-01 김광호 픽쳐인픽쳐기능을 구비한 영상디스플레이기기의 화면상태안정화 방법 및 그 장치
JPH07264503A (ja) * 1994-03-23 1995-10-13 Toshiba Corp テレビジョン受像機
US5548341A (en) * 1994-08-05 1996-08-20 Thomson Consumer Electronics, Inc. Television receiver with non-linear processing selectively disabled during display of multi-image video signal
JP3286088B2 (ja) * 1994-08-29 2002-05-27 株式会社東芝 テレビジョン受像機
KR970005942B1 (ko) * 1994-09-16 1997-04-22 엘지전자 주식회사 모니터의 휘도 자동보정장치
TW301101B (es) * 1994-11-17 1997-03-21 Matsushita Electric Industrial Co Ltd
CN1135140A (zh) * 1995-02-27 1996-11-06 松下电器产业株式会社 用于多重图像显示的补偿电压发生装置及其视频显示装置
US6002447A (en) * 1996-03-07 1999-12-14 Thomson Consumer Electronics, Inc. Video signal processing apparatus
TR199600195A1 (tr) * 1996-03-11 1997-09-21 Massimo Calearo Motorlu tasitlar icin anten.
JPH09271037A (ja) * 1996-03-29 1997-10-14 Toshiba Microelectron Corp カラー受像機及びカラー受像機の白バランス自己調整装置
JPH09312852A (ja) * 1996-05-22 1997-12-02 Matsushita Electric Ind Co Ltd 自動ビーム電流制限装置
US6389177B1 (en) 1996-07-02 2002-05-14 Apple Computer, Inc. System and method using edge processing to remove blocking artifacts from decompressed images
KR100214634B1 (ko) * 1996-12-21 1999-08-02 구자홍 프로젝션 티브이의 b색 감마보정 회로
DE19709681A1 (de) 1997-03-11 1998-09-17 Thomson Brandt Gmbh Schaltung zur Überwachung des Strahlstroms in einer Farbildröhre
US6809776B1 (en) 1997-04-23 2004-10-26 Thomson Licensing S.A. Control of video level by region and content of information displayed
DE69731120T2 (de) * 1997-04-23 2005-02-24 Thomson Consumer Electronics, Inc., Indianapolis Bereichs- und informationsanzeigeabhängige videopegelsteuerung
WO1999005666A1 (en) 1997-07-25 1999-02-04 Apple Computer, Inc. System and method for generating high-luminance windows on a computer display device
US6313823B1 (en) 1998-01-20 2001-11-06 Apple Computer, Inc. System and method for measuring the color output of a computer monitor
US7412654B1 (en) * 1998-09-24 2008-08-12 Apple, Inc. Apparatus and method for handling special windows in a display
US6556253B1 (en) * 1999-10-26 2003-04-29 Thomson Licensing S.A. Multi-window picture adjustment arrangement for a video display
TWI289291B (en) * 2003-04-29 2007-11-01 Sunplus Technology Co Ltd Sub-screen image decoder
US7496277B2 (en) * 2003-06-02 2009-02-24 Disney Enterprises, Inc. System and method of programmatic window control for consumer video players
JP2005268875A (ja) * 2004-03-16 2005-09-29 Orion Denki Kk スミア現象の発生を防止するリミッタ回路を有するテレビジョン受像機
US20070101370A1 (en) * 2005-10-28 2007-05-03 Stexar Corp. Television program selection
US11636668B2 (en) 2017-11-10 2023-04-25 Nvidia Corp. Bilateral convolution layer network for processing point clouds

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231065A (en) * 1979-01-11 1980-10-28 Honeywell Inc. Local area contrast enhancement device
US4220972A (en) * 1979-05-22 1980-09-02 Honeywell Inc. Low contrast object extraction device
US4451840A (en) * 1981-11-25 1984-05-29 Rca Corporation Picture control for television receiver on-screen display
JPS5986974A (ja) * 1982-11-11 1984-05-19 Sharp Corp 自動輝度制限回路
US4549218A (en) * 1983-09-30 1985-10-22 Rca Corporation On-screen display
US4549217A (en) * 1983-09-30 1985-10-22 Rca Corporation Automatic contrast reduction circuit for a teletext or monitor operation
JPS60172891A (ja) * 1984-02-17 1985-09-06 Matsushita Electric Ind Co Ltd 多画面テレビジヨン受像機
JPS63121366A (ja) * 1986-11-10 1988-05-25 Sony Corp テレビジヨン受像機
US4947253A (en) * 1989-04-18 1990-08-07 Rca Licensing Corporation Brightness modulator for closed loop compensation of black level

Also Published As

Publication number Publication date
EP0546431A1 (en) 1993-06-16
CA2083312A1 (en) 1993-06-12
EP0546431B1 (en) 1998-03-04
DE69224598D1 (de) 1998-04-09
CN1074321A (zh) 1993-07-14
MY108323A (en) 1996-09-30
CN1036234C (zh) 1997-10-22
US5204748A (en) 1993-04-20
KR960013304B1 (ko) 1996-10-02
TW199954B (es) 1993-02-11
CA2083312C (en) 1999-10-12
KR930015796A (ko) 1993-07-24
HK1005785A1 (en) 1999-01-22
JP3312256B2 (ja) 2002-08-05
JPH05308595A (ja) 1993-11-19
DE69224598T2 (de) 1998-06-25

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