WO1991020124A3 - Synthesiseur fm numerique pour circuits d'enregistrement - Google Patents

Synthesiseur fm numerique pour circuits d'enregistrement Download PDF

Info

Publication number
WO1991020124A3
WO1991020124A3 PCT/US1991/003811 US9103811W WO9120124A3 WO 1991020124 A3 WO1991020124 A3 WO 1991020124A3 US 9103811 W US9103811 W US 9103811W WO 9120124 A3 WO9120124 A3 WO 9120124A3
Authority
WO
WIPO (PCT)
Prior art keywords
digital
sequence
video signal
synthesizer
samples
Prior art date
Application number
PCT/US1991/003811
Other languages
English (en)
Other versions
WO1991020124A2 (fr
Inventor
Eugene Murphy O'donnell
Original Assignee
Thomson Consumer Electronics
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 filed Critical Thomson Consumer Electronics
Priority to HU9203614A priority Critical patent/HU224384B1/hu
Priority to US07/927,512 priority patent/US5390213A/en
Priority to EP91914952A priority patent/EP0532702B1/fr
Priority to DE69105132T priority patent/DE69105132T2/de
Publication of WO1991020124A2 publication Critical patent/WO1991020124A2/fr
Publication of WO1991020124A3 publication Critical patent/WO1991020124A3/fr
Priority to US08/387,671 priority patent/US5566207A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

Un synthétiseur numérique pour circuits d'enregistrement, par exemple d'un magnétoscope, est alimenté en échantillons de signaux numériques représentant un signal vidéo. Un étage calculateur (16), réagissant aux échantillons de signaux numériques, calcule une séquence de période d'impulsions définissant un signal modulé par impulsions de durée variable, qui représente la modulation FM d'une sous-porteuse par le signal vidéo. Un étage (18) produisant des échantillons de signaux de sortie intervient sur la séquence de période d'impulsions pour produire une séquence d'échantillons de signaux de sortie numérique (19) qui est convertie dans un convertisseur numérique/analogique en signal vidéo modulé FM pour enregistrement ultérieur sur bande.
PCT/US1991/003811 1990-06-01 1991-05-30 Synthesiseur fm numerique pour circuits d'enregistrement WO1991020124A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
HU9203614A HU224384B1 (hu) 1990-06-01 1991-05-30 Digitális FM szintetizátor rögzítő áramkörökhöz
US07/927,512 US5390213A (en) 1990-06-01 1991-05-30 Digital FM synthesizer for record circuitry
EP91914952A EP0532702B1 (fr) 1990-06-01 1991-05-30 Synthesiseur fm numerique pour circuits d'enregistrement
DE69105132T DE69105132T2 (de) 1990-06-01 1991-05-30 Digitaler fm-synthesizer für aufnahmeschaltungen.
US08/387,671 US5566207A (en) 1990-06-01 1995-02-13 Digital FM synthesizer for record circuitry

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9012327.4 1990-06-01
GB909012327A GB9012327D0 (en) 1990-06-01 1990-06-01 Digital fm synthesizer for record circuitry

Publications (2)

Publication Number Publication Date
WO1991020124A2 WO1991020124A2 (fr) 1991-12-26
WO1991020124A3 true WO1991020124A3 (fr) 1992-02-06

Family

ID=10676971

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/003811 WO1991020124A2 (fr) 1990-06-01 1991-05-30 Synthesiseur fm numerique pour circuits d'enregistrement

Country Status (12)

Country Link
US (2) US5390213A (fr)
EP (1) EP0532702B1 (fr)
JP (1) JP3156791B2 (fr)
KR (1) KR100196815B1 (fr)
CN (1) CN1030954C (fr)
AU (1) AU8446691A (fr)
DE (1) DE69105132T2 (fr)
ES (1) ES2067243T3 (fr)
GB (1) GB9012327D0 (fr)
HU (2) HUT64650A (fr)
MY (1) MY106822A (fr)
WO (1) WO1991020124A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406584A (en) * 1992-09-01 1995-04-11 X-Com, Inc. Time shift keying digital communications system
JP3205167B2 (ja) * 1993-04-05 2001-09-04 キヤノン株式会社 電子源の製造方法及び画像形成装置の製造方法
DE19545022A1 (de) * 1995-12-02 1997-06-05 Daimler Benz Aerospace Ag Digitales Verfahren zur Detektion zeitlich kurzer Pulse und Anordnung zur Durchführung des Verfahrens
US5796842A (en) * 1996-06-07 1998-08-18 That Corporation BTSC encoder
US8908872B2 (en) * 1996-06-07 2014-12-09 That Corporation BTSC encoder
US6130919A (en) * 1998-12-21 2000-10-10 Lin; Ming-I Method and device for digital frequency modulation
JP3621345B2 (ja) * 2000-12-12 2005-02-16 Ｎｅｃエレクトロニクス株式会社 複数のテレビジョン信号方式に対応可能な映像信号処理回路
CN102324935A (zh) * 2011-07-15 2012-01-18 苏州博联科技有限公司 一种基于过零检测的数模转换器静态测试方法及系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068535A2 (fr) * 1981-06-20 1983-01-05 Philips Patentverwaltung GmbH Dispositif pour la génération d'une séquence de signaux de sorties numériques correspondant à un signal à modulation de fréquence
EP0078588A1 (fr) * 1981-11-02 1983-05-11 Hewlett-Packard Company Procédé et appareil pour la synthèse des signaux
DE3740130C1 (de) * 1987-11-26 1989-06-08 Rohde & Schwarz Sinusgenerator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051539A (en) * 1976-04-30 1977-09-27 Purdue Research Foundation Differential duration demultiplexing method and system
US4181817A (en) * 1977-01-28 1980-01-01 Ampex Corporation High bit rate digital data signal transmission system
JPH0691558B2 (ja) * 1986-12-17 1994-11-14 株式会社日立製作所 デイジタル信号伝送方式
GB2212017B (en) * 1987-12-17 1992-05-20 Mitsubishi Electric Corp Frequency demodulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068535A2 (fr) * 1981-06-20 1983-01-05 Philips Patentverwaltung GmbH Dispositif pour la génération d'une séquence de signaux de sorties numériques correspondant à un signal à modulation de fréquence
EP0078588A1 (fr) * 1981-11-02 1983-05-11 Hewlett-Packard Company Procédé et appareil pour la synthèse des signaux
DE3740130C1 (de) * 1987-11-26 1989-06-08 Rohde & Schwarz Sinusgenerator

Also Published As

Publication number Publication date
EP0532702A1 (fr) 1993-03-24
KR100196815B1 (ko) 1999-06-15
JPH05507599A (ja) 1993-10-28
HU224384B1 (hu) 2005-08-29
MY106822A (en) 1995-07-31
US5390213A (en) 1995-02-14
ES2067243T3 (es) 1995-03-16
JP3156791B2 (ja) 2001-04-16
DE69105132T2 (de) 1995-05-18
HU9203614D0 (en) 1993-04-28
HUT64650A (en) 1994-01-28
GB9012327D0 (en) 1990-07-18
AU8446691A (en) 1992-01-07
WO1991020124A2 (fr) 1991-12-26
CN1030954C (zh) 1996-02-07
US5566207A (en) 1996-10-15
DE69105132D1 (de) 1994-12-15
CN1059249A (zh) 1992-03-04
EP0532702B1 (fr) 1994-11-09

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