ES2090057T3 - Detector de señal de sincronizacion vertical. - Google Patents
Detector de señal de sincronizacion vertical.Info
- Publication number
- ES2090057T3 ES2090057T3 ES90107175T ES90107175T ES2090057T3 ES 2090057 T3 ES2090057 T3 ES 2090057T3 ES 90107175 T ES90107175 T ES 90107175T ES 90107175 T ES90107175 T ES 90107175T ES 2090057 T3 ES2090057 T3 ES 2090057T3
- Authority
- ES
- Spain
- Prior art keywords
- counter
- numerical
- comparator
- output
- vertical sync
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
-
- 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
- H04N5/10—Separation of line synchronising signal from frame synchronising signal or vice versa
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Synchronizing For Television (AREA)
- Burglar Alarm Systems (AREA)
- Details Of Television Scanning (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Electrophonic Musical Instruments (AREA)
- Selective Calling Equipment (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Television Signal Processing For Recording (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
UN DETECTOR (10) PARA IMPULSOS DE SINCRONIZACION VERTICAL COMPRENDE UN CONTADOR ASCENDENTE Y DESCENDENTE SIN ENVOLTURA (14) Y UN COMPARADOR (18). EL CONTADOR (14) MUESTREA EL NIVEL DE UNA SEÑAL DE SINCRONIZACION COMPUESTA A UNA CADENCIA DE MUESTREO. EL CONTADOR (14) TIENE UNA SALIDA NUMERICA QUE INCREMENTA LA RESPUESTA A LA DETECCION DE DICHO NIVEL DURANTE UN INTERVALO DE MUESTREO Y DISMINUYA LA RESPUESTA A LA NO DETECCION DE DICHO NIVEL DURANTE UN INTERVALO DE MUESTREO. EL COMPARADOR (18) GENERA UN IMPULSO DE DETECCION VERTICAL CUANDO LA SALIDA NUMERICA DEL CONTADOR (14) ES MAYOR QUE UN VALOR DE REFERENCIA. AL OBJETO DE FACILITAR LA HISTERESIS, EL VALOR NUMERICO ES ALTERNATIVAMENTE UNA DE LAS PRIMERAS Y SEGUNDAS CUENTAS DE REFERENCIA NUMERICA, SIENDO LA PRIMERA CUENTA DE REFERENCIA MAYOR QUE LA SEGUNDA CUENTA DE REFERENCIA. EL COMPARADOR (18) INICIA EL IMPULSO DE DETECCION DE SINCRONIZACION VERTICAL CUANDO LA SALIDA NUMERICA DEL CONTADOR (14) SE ELEVA SOBRE LA PRIMERA CUENTA DE REFERENCIAY TERMINA EL IMPULSO DE DETECCION DE SINCRONIZACION VERTICAL CUANDO LA SALIDA NUMERICA DEL CONTADOR (14) CAE POR DEBAJO DE LA SEGUNDA CUENTA DE REFERENCIA. LA REFERENCIA NUMERICA FACILITADA AL COMPARADOR (18) SE CAMBIA EN LOS TIEMPOS CORRESPONDIENTES A LA INICIACION Y TERMINACION DE CADA IMPULSO DE DETECCION DE SINCRONIZACION VERTICAL. UN CIRCUITO DE CONFORMACION DE IMPULSO PUEDE COMPRENDER UN RELE (22) PARA MUESTREO DE LA SALIDA DEL COMPARADOR (18) Y GENERACION DE SEÑAL DE SINCRONIZACION VERTICAL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/340,651 US5031041A (en) | 1989-04-20 | 1989-04-20 | Digital detector/filter for synchronizing signals |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2090057T3 true ES2090057T3 (es) | 1996-10-16 |
ES2090057T5 ES2090057T5 (es) | 2000-03-01 |
Family
ID=23334363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90107175T Expired - Lifetime ES2090057T5 (es) | 1989-04-20 | 1990-04-14 | Detector de señal de sincronizacion vertical. |
Country Status (12)
Country | Link |
---|---|
US (1) | US5031041A (es) |
EP (1) | EP0393558B2 (es) |
JP (1) | JPH02301375A (es) |
KR (1) | KR100236887B1 (es) |
CN (1) | CN1038091C (es) |
AT (1) | ATE142070T1 (es) |
CA (1) | CA2013348C (es) |
DE (1) | DE69028235T3 (es) |
ES (1) | ES2090057T5 (es) |
FI (1) | FI98110C (es) |
SG (1) | SG64304A1 (es) |
TR (1) | TR26225A (es) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5229854A (en) * | 1991-05-17 | 1993-07-20 | Thomson Consumer Electronics, Inc. | Vertical sync separator |
US5404172A (en) * | 1992-03-02 | 1995-04-04 | Eeg Enterprises, Inc. | Video signal data and composite synchronization extraction circuit for on-screen display |
US5367337A (en) * | 1992-04-30 | 1994-11-22 | Image Data Corporation | Method and apparatus for capturing video images |
FR2716765B1 (fr) * | 1994-02-28 | 1996-05-31 | Sgs Thomson Microelectronics | Procédé de reconnaisance de standard vidéo, et circuit mettant en Óoeuvre ce procédé. |
CA2178847C (en) * | 1995-06-13 | 2006-05-23 | Stephen W. Marshall | Tracking filter |
JPH0969965A (ja) * | 1995-08-30 | 1997-03-11 | Sony Corp | 垂直同期信号安定化回路、集積回路及びテレビジヨン信号処理装置 |
KR0149304B1 (ko) * | 1995-10-10 | 1998-10-15 | 김광호 | 비디오 신호의 수직동기신호 생성장치 |
US6606410B2 (en) | 1997-01-17 | 2003-08-12 | Samsung Electronics Co., Ltd. | Method and apparatus for detecting a synchronous signal |
KR100234312B1 (ko) * | 1997-01-17 | 1999-12-15 | 윤종용 | 고정도 동기 신호 검출방법 및 장치 |
JP3515775B1 (ja) * | 2002-08-20 | 2004-04-05 | 沖電気工業株式会社 | 垂直同期検出回路 |
KR100510148B1 (ko) * | 2003-09-20 | 2005-08-25 | 삼성전자주식회사 | 아날로그 영상신호 수신 시스템에서 디스플레이 동기 신호생성 장치 및 방법 |
KR100490635B1 (ko) * | 2003-10-01 | 2005-05-18 | 삼성에스디아이 주식회사 | 플라즈마 디스플레이 패널 및 그 구동 방법 |
JP2007165955A (ja) * | 2005-12-09 | 2007-06-28 | Oki Electric Ind Co Ltd | 垂直同期信号生成装置 |
US8203651B2 (en) * | 2008-11-07 | 2012-06-19 | Stmicroelectronics Maroc | Video signal synchronization |
EP2765392B1 (de) * | 2013-02-06 | 2015-09-02 | Siemens Aktiengesellschaft | Verfahren und Auswerteeinrichtung für eine Plausibilitätsprüfung eines Inkrementalzählers |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4025952A (en) * | 1976-06-09 | 1977-05-24 | Gte Sylvania Incorporated | Vertical synchronizing circuit |
JPS5350613A (en) * | 1976-10-19 | 1978-05-09 | Matsushita Electric Ind Co Ltd | Synchronous signal processing circuit |
JPS5399718A (en) * | 1977-02-10 | 1978-08-31 | Nec Corp | Signal state detector circuit |
JPS5556767A (en) * | 1978-10-23 | 1980-04-25 | Toshiba Corp | Vertical synchronism detector circuit |
JPS5556766A (en) * | 1978-10-23 | 1980-04-25 | Toshiba Corp | Vertical synchronism detector circuit |
JPS56165469A (en) * | 1980-05-23 | 1981-12-19 | Sony Corp | Detecting method of vertical synchronous signal |
JPS58191584A (ja) * | 1982-05-01 | 1983-11-08 | Pioneer Video Kk | 映像情報の記録方式及び記録装置 |
JPS6074781A (ja) * | 1983-09-30 | 1985-04-27 | Hitachi Ltd | 垂直同期信号分離装置 |
DE3343455A1 (de) * | 1983-12-01 | 1985-06-13 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zum erkennen der vertikalaustastluecke in einem bildsignal |
GB8414314D0 (en) * | 1984-06-05 | 1984-07-11 | Motorola Inc | Vertical synchronisation pulse separator |
US4600944A (en) * | 1984-08-06 | 1986-07-15 | Zenith Electronics Corporation | Low cost synchronizing signal separator |
US4697211A (en) * | 1986-04-30 | 1987-09-29 | Rca Corporation | Sync separator with periodic updating |
JPS63153963A (ja) * | 1986-12-18 | 1988-06-27 | Matsushita Electric Ind Co Ltd | 同期分離装置 |
-
1989
- 1989-04-20 US US07/340,651 patent/US5031041A/en not_active Expired - Lifetime
-
1990
- 1990-03-29 CA CA002013348A patent/CA2013348C/en not_active Expired - Fee Related
- 1990-04-09 TR TR90/0434A patent/TR26225A/xx unknown
- 1990-04-12 FI FI901859A patent/FI98110C/fi not_active IP Right Cessation
- 1990-04-14 ES ES90107175T patent/ES2090057T5/es not_active Expired - Lifetime
- 1990-04-14 EP EP90107175A patent/EP0393558B2/en not_active Expired - Lifetime
- 1990-04-14 SG SG1996002021A patent/SG64304A1/en unknown
- 1990-04-14 DE DE69028235T patent/DE69028235T3/de not_active Expired - Lifetime
- 1990-04-14 AT AT90107175T patent/ATE142070T1/de not_active IP Right Cessation
- 1990-04-17 KR KR1019900005320A patent/KR100236887B1/ko not_active IP Right Cessation
- 1990-04-19 JP JP2101890A patent/JPH02301375A/ja active Pending
- 1990-04-19 CN CN90102315A patent/CN1038091C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0393558B1 (en) | 1996-08-28 |
JPH02301375A (ja) | 1990-12-13 |
KR900017410A (ko) | 1990-11-16 |
FI98110C (fi) | 1997-04-10 |
SG64304A1 (en) | 1999-04-27 |
EP0393558B2 (en) | 1999-11-17 |
US5031041A (en) | 1991-07-09 |
DE69028235T2 (de) | 1997-01-23 |
CN1046648A (zh) | 1990-10-31 |
ATE142070T1 (de) | 1996-09-15 |
FI98110B (fi) | 1996-12-31 |
EP0393558A2 (en) | 1990-10-24 |
FI901859A0 (fi) | 1990-04-12 |
CN1038091C (zh) | 1998-04-15 |
DE69028235T3 (de) | 2000-04-06 |
ES2090057T5 (es) | 2000-03-01 |
DE69028235D1 (de) | 1996-10-02 |
EP0393558A3 (en) | 1992-10-14 |
CA2013348C (en) | 1999-06-01 |
CA2013348A1 (en) | 1990-10-20 |
KR100236887B1 (ko) | 2000-01-15 |
TR26225A (tr) | 1995-02-15 |
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Legal Events
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