ES2084079T3 - Aparato para el procesamiento de señales de video divididas en lineas con una fase de separacion sincrona digital. - Google Patents

Aparato para el procesamiento de señales de video divididas en lineas con una fase de separacion sincrona digital.

Info

Publication number
ES2084079T3
ES2084079T3 ES91116607T ES91116607T ES2084079T3 ES 2084079 T3 ES2084079 T3 ES 2084079T3 ES 91116607 T ES91116607 T ES 91116607T ES 91116607 T ES91116607 T ES 91116607T ES 2084079 T3 ES2084079 T3 ES 2084079T3
Authority
ES
Spain
Prior art keywords
line
measuring
video signals
processing video
black level
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
ES91116607T
Other languages
English (en)
Inventor
Ronalf Dipl-Ing Kramer
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of ES2084079T3 publication Critical patent/ES2084079T3/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
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H04N5/185—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

EL APARATO PRESENTA UN DISPOSITIVO PARA LA FORMACION DE UN UMBRAL DE SEPARACION DE SINCRONIZACION. EL DISPOSITIVO CONTIENE DISPOSICIONES DE MEDIDA (23, 24, 25, 26), CON LAS CUALES SE PUEDEN DETERMINAR VALORES DE MEDIDA PARA EL NIVEL DEL NEGRO Y EL VALOR SINCRONO DE UNA SEÑAL DE VIDEO SEGUN UNA MEDICION ESTIMADA Y SEGUN UN METODO DE MEDICION EXACTO RESPECTIVAMENTE. DEPENDIENDO DEL ESTADO DE ENCASTRE DE UN CIRCUITO DE REGULACION DE FASES (11) CONECTADO A CONTINUACION, SE SELECCIONAN O BIEN LOS VALORES DE MEDIDA OBTENIDOS SEGUN EL SISTEMA DE ESTIMACION, O BIEN SEGUN EL METODO EXACTO. EL VALOR DE MEDIDA PARA EL NIVEL DEL NEGRO ES CONDUCIDO A UN PRIMER DISPOSITIVO DE REGULACION (27), Y ES UTILIZADO PARA LA FIJACION DE LA SEÑAL DE VIDEO. DE LOS VALORES DE MEDIDA PARA EL NIVEL DEL NEGRO Y EL VALOR SINCRONO, SE FORMA UN VALOR MEDIO (50), QUE ES CONDUCIDO A UN SEGUNDO DISPOSITIVO DE REGULACION (21). LA SEÑAL DE SALIDA DEL SEGUNDO DISPOSITIVO ES EL UMBRAL DE SEPARACION DE SINCRONIZACION (41).
ES91116607T 1991-09-27 1991-09-27 Aparato para el procesamiento de señales de video divididas en lineas con una fase de separacion sincrona digital. Expired - Lifetime ES2084079T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19910116607 EP0533997B1 (de) 1991-09-27 1991-09-27 Gerät zum Verarbeiten von in Zeilen aufgeteilten Videosignalen mit einer digitalen Synchronabtrennstufe

Publications (1)

Publication Number Publication Date
ES2084079T3 true ES2084079T3 (es) 1996-05-01

Family

ID=8207222

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91116607T Expired - Lifetime ES2084079T3 (es) 1991-09-27 1991-09-27 Aparato para el procesamiento de señales de video divididas en lineas con una fase de separacion sincrona digital.

Country Status (4)

Country Link
EP (1) EP0533997B1 (es)
JP (1) JPH05219402A (es)
DE (1) DE59107587D1 (es)
ES (1) ES2084079T3 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960028179A (ko) * 1994-12-06 1996-07-22 조셉 제이 락스 적응 동기 신호 분리기
JP2006203473A (ja) * 2005-01-19 2006-08-03 Nec Electronics Corp 同期検出回路
JP4731204B2 (ja) * 2005-05-20 2011-07-20 三菱電機株式会社 同期分離装置およびスライスレベルの決定方法
JP5237606B2 (ja) * 2007-10-10 2013-07-17 セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー 同期分離回路

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697211A (en) * 1986-04-30 1987-09-29 Rca Corporation Sync separator with periodic updating
BG47786A1 (en) * 1988-02-24 1990-09-14 Komitet Za Televizija I Radio Method and device for precise separation of synchroimpulses
DE3931860A1 (de) * 1989-09-23 1991-04-04 Philips Patentverwaltung Synchronsignal-detektor
DE3931861A1 (de) * 1989-09-23 1991-04-04 Philips Patentverwaltung Digitale schaltungsanordnung zur detektion von synchronisations-impulsen

Also Published As

Publication number Publication date
DE59107587D1 (de) 1996-04-25
JPH05219402A (ja) 1993-08-27
EP0533997B1 (de) 1996-03-20
EP0533997A1 (de) 1993-03-31

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