ES2054245T3 - Circuiteria de fijacion de señales digitales. - Google Patents
Circuiteria de fijacion de señales digitales.Info
- Publication number
- ES2054245T3 ES2054245T3 ES90303507T ES90303507T ES2054245T3 ES 2054245 T3 ES2054245 T3 ES 2054245T3 ES 90303507 T ES90303507 T ES 90303507T ES 90303507 T ES90303507 T ES 90303507T ES 2054245 T3 ES2054245 T3 ES 2054245T3
- Authority
- ES
- Spain
- Prior art keywords
- additioner
- digital signal
- counter
- return
- fixing circuit
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Analogue/Digital Conversion (AREA)
- Processing Of Color Television Signals (AREA)
- Hall/Mr Elements (AREA)
- Measuring Volume Flow (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
UN CIRCUITO DE FIJACION DE SEÑAL DIGITAL SE REALIZA UTILIZANDO UN ADICIONADOR (28) Y UN CONTADOR DE IDA Y VUELTA. LA SEÑAL DIGITAL SE ACOPLA A UNA ENTRADA DEL ADICIONADOR (28) Y LA SALIDA DEL CONTADOR SE ACOPLA A UNA SEGUNDA ENTRADA DEL ADICIONADOR. EL CONTADOR DE IDA Y VUELTA (18) ES CAPAZ DE CONTAR SOLO DURANTE LOS INTERVALOS DE SEÑAL, EXHIBIENDO EL NIVEL DE FIJACION DESEADO. EL CONTADOR SE CONTROLA PARA QUE CUENTE A LA IDA O A LA VUELTA, DEPENDIENDO DE LA POLARIDAD DE LA SEÑAL OFRECIDA POR EL ADICIONADOR. EL VALOR DE COMPUTO EN EL CONTADOR SE APLICA CONTINUAMENTE AL ADICIONADOR PARA QUE TENGA LUGAR LA FIJACION. UTILIZANDO UN VALOR DE COMPUTO TRUNCADO DEL CONTADOR SE INCREMENTA EL FUNCIONAMIENTO DE LA FIJACION.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/333,051 US5003564A (en) | 1989-04-04 | 1989-04-04 | Digital signal clamp circuitry |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2054245T3 true ES2054245T3 (es) | 1994-08-01 |
Family
ID=23301048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90303507T Expired - Lifetime ES2054245T3 (es) | 1989-04-04 | 1990-04-02 | Circuiteria de fijacion de señales digitales. |
Country Status (10)
Country | Link |
---|---|
US (1) | US5003564A (es) |
EP (1) | EP0391643B1 (es) |
JP (1) | JP2756851B2 (es) |
KR (2) | KR930009363B1 (es) |
CN (1) | CN1023370C (es) |
CA (1) | CA2012809C (es) |
DE (1) | DE69009572T2 (es) |
ES (1) | ES2054245T3 (es) |
FI (1) | FI96560C (es) |
MY (1) | MY106698A (es) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3143117B2 (ja) * | 1990-09-25 | 2001-03-07 | キヤノン株式会社 | 信号処理装置 |
JPH04167891A (ja) * | 1990-10-31 | 1992-06-15 | Sony Corp | ビデオテープレコーダ |
US5084700A (en) * | 1991-02-04 | 1992-01-28 | Thomson Consumer Electronics, Inc. | Signal clamp circuitry for analog-to-digital converters |
JPH04316276A (ja) * | 1991-04-16 | 1992-11-06 | Ricoh Co Ltd | 画像形成装置 |
DE4215668C2 (de) * | 1992-05-13 | 2003-06-12 | Thomson Brandt Gmbh | Klemmschaltung für ein digitales Videosignal |
US5448308A (en) * | 1993-02-05 | 1995-09-05 | Thomson Consumer Electronics, Inc. | Apparatus for clamping a video signal level |
KR960028179A (ko) * | 1994-12-06 | 1996-07-22 | 조셉 제이 락스 | 적응 동기 신호 분리기 |
US5798802A (en) * | 1996-01-31 | 1998-08-25 | Deutsche Itt Industries Gmbh | Video signal clamping circuit |
US6271889B1 (en) | 1999-03-04 | 2001-08-07 | Analog Devices, Inc. | Synchronization pulse detection circuit |
US7319852B2 (en) * | 2002-08-29 | 2008-01-15 | Qualcomm, Incorporated | Apparatus and method for DC offset compensation in a direct conversion receiver |
JP2005086784A (ja) * | 2003-09-11 | 2005-03-31 | Sanyo Electric Co Ltd | デジタルクランプ回路 |
CN101201376B (zh) * | 2007-12-19 | 2010-11-24 | 四川长虹电器股份有限公司 | 一种数字信号极性自动识别的方法 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891833A (en) * | 1974-04-05 | 1975-06-24 | Westinghouse Electric Corp | Vehicle coast control system |
JPS5754983B2 (es) * | 1974-04-19 | 1982-11-20 | ||
US3924106A (en) * | 1974-10-31 | 1975-12-02 | Us Energy | Background compensation for a radiation level monitor |
US3984663A (en) * | 1974-12-18 | 1976-10-05 | General Motors Corporation | Signal maximum or minimum seeking circuit |
DE2628662C3 (de) * | 1976-06-25 | 1980-03-06 | Robert Bosch Gmbh, 7000 Stuttgart | System zur Korrektur der digitalen Wertigkeit von Signalen |
DE2735303C3 (de) * | 1977-08-05 | 1982-03-25 | Robert Bosch Gmbh, 7000 Stuttgart | Schaltungsanordnung zur digitalen Klemmung pulscodemodulierter Videosignale |
DE2737431C3 (de) * | 1977-08-19 | 1980-11-06 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren zur digitalen Klemmung pulscodemodulierter Videosignale |
US4215371A (en) * | 1978-12-21 | 1980-07-29 | Rockwell International Corporation | Front porch clamping circuit |
NL7901722A (nl) * | 1979-03-05 | 1980-09-09 | Philips Nv | Klemschakeling voor een videosignaal. |
JPS5767380A (en) * | 1980-10-15 | 1982-04-23 | Alps Electric Co Ltd | Video clamping circuit |
DE3214756C2 (de) * | 1981-05-02 | 1991-10-17 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zum Ermitteln des Wertes eines Referenzpegels |
JPS58178670A (ja) * | 1982-04-12 | 1983-10-19 | Alps Electric Co Ltd | ビデオ・クランプ回路 |
US4504741A (en) * | 1982-08-30 | 1985-03-12 | Rockwell International Corporation | Digital circuit for generating ascending or descending ramp-like waveforms |
US4742392A (en) * | 1983-08-04 | 1988-05-03 | Canon Kabushiki Kaisha | Clamp circuit with feed back |
US4718119A (en) * | 1984-08-27 | 1988-01-05 | Motorola Inc. | AGC circuit including a precision voltage clamp and method |
KR900002645B1 (ko) * | 1985-03-27 | 1990-04-21 | 가부시기가이샤 히다찌세이사꾸쇼 | 크람푸 회로 |
DE3673255D1 (de) * | 1985-05-21 | 1990-09-13 | Citizen Watch Co Ltd | Automatische austastpegel-klemmschaltung. |
JPH0797830B2 (ja) * | 1986-04-08 | 1995-10-18 | ソニー株式会社 | ビデオカメラの黒レベル補正回路 |
US4707741A (en) * | 1986-04-11 | 1987-11-17 | Harris Corporation | Video signal clamping with clamp pulse width variation with noise |
JPS63176069A (ja) * | 1987-01-16 | 1988-07-20 | Toshiba Corp | デジタルクランプ回路 |
JP2517961B2 (ja) * | 1987-05-11 | 1996-07-24 | ソニー株式会社 | ビデオ信号のクランプ回路 |
-
1989
- 1989-04-04 US US07/333,051 patent/US5003564A/en not_active Expired - Lifetime
-
1990
- 1990-03-22 CA CA002012809A patent/CA2012809C/en not_active Expired - Fee Related
- 1990-03-28 FI FI901552A patent/FI96560C/fi not_active IP Right Cessation
- 1990-03-29 MY MYPI90000492A patent/MY106698A/en unknown
- 1990-04-02 DE DE69009572T patent/DE69009572T2/de not_active Expired - Fee Related
- 1990-04-02 ES ES90303507T patent/ES2054245T3/es not_active Expired - Lifetime
- 1990-04-02 EP EP90303507A patent/EP0391643B1/en not_active Expired - Lifetime
- 1990-04-02 KR KR1019900004472A patent/KR930009363B1/ko not_active IP Right Cessation
- 1990-04-03 JP JP2090081A patent/JP2756851B2/ja not_active Expired - Fee Related
- 1990-04-03 CN CN90101943A patent/CN1023370C/zh not_active Expired - Lifetime
-
1991
- 1991-04-04 KR KR1019910005499A patent/KR940009999B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI96560C (fi) | 1996-07-10 |
CN1023370C (zh) | 1993-12-29 |
JPH02294167A (ja) | 1990-12-05 |
EP0391643A1 (en) | 1990-10-10 |
MY106698A (en) | 1995-07-31 |
DE69009572D1 (de) | 1994-07-14 |
EP0391643B1 (en) | 1994-06-08 |
US5003564A (en) | 1991-03-26 |
DE69009572T2 (de) | 1995-01-19 |
JP2756851B2 (ja) | 1998-05-25 |
CA2012809A1 (en) | 1990-10-04 |
KR940009999B1 (ko) | 1994-10-19 |
FI901552A0 (fi) | 1990-03-28 |
KR900017374A (ko) | 1990-11-16 |
FI96560B (fi) | 1996-03-29 |
KR930009363B1 (ko) | 1993-09-28 |
CA2012809C (en) | 1999-11-16 |
CN1046253A (zh) | 1990-10-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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